Embedded MotionDriver 6.1 Sourced from InvenSense

Files at this revision

API Documentation at this revision

Comitter:
oprospero
Date:
Sun Aug 24 00:52:07 2014 +0000
Commit message:
Initial commit, copied from Motion Driver 6.1 no edits

Changed in this revision

dmpKey.h Show annotated file Show diff for this revision Revisions of this file
dmpmap.h Show annotated file Show diff for this revision Revisions of this file
inv_mpu.c Show annotated file Show diff for this revision Revisions of this file
inv_mpu.h Show annotated file Show diff for this revision Revisions of this file
inv_mpu_dmp_motion_driver.c Show annotated file Show diff for this revision Revisions of this file
inv_mpu_dmp_motion_driver.h Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 5fa30cf392c3 dmpKey.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmpKey.h	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,495 @@
+/*
+ $License:
+    Copyright (C) 2011 InvenSense Corporation, All Rights Reserved.
+ $
+ */
+#ifndef DMPKEY_H__
+#define DMPKEY_H__
+
+#define KEY_CFG_25                  (0)
+#define KEY_CFG_24                  (KEY_CFG_25 + 1)
+#define KEY_CFG_26                  (KEY_CFG_24 + 1)
+#define KEY_CFG_27                  (KEY_CFG_26 + 1)
+#define KEY_CFG_21                  (KEY_CFG_27 + 1)
+#define KEY_CFG_20                  (KEY_CFG_21 + 1)
+#define KEY_CFG_TAP4                (KEY_CFG_20 + 1)
+#define KEY_CFG_TAP5                (KEY_CFG_TAP4 + 1)
+#define KEY_CFG_TAP6                (KEY_CFG_TAP5 + 1)
+#define KEY_CFG_TAP7                (KEY_CFG_TAP6 + 1)
+#define KEY_CFG_TAP0                (KEY_CFG_TAP7 + 1)
+#define KEY_CFG_TAP1                (KEY_CFG_TAP0 + 1)
+#define KEY_CFG_TAP2                (KEY_CFG_TAP1 + 1)
+#define KEY_CFG_TAP3                (KEY_CFG_TAP2 + 1)
+#define KEY_CFG_TAP_QUANTIZE        (KEY_CFG_TAP3 + 1)
+#define KEY_CFG_TAP_JERK            (KEY_CFG_TAP_QUANTIZE + 1)
+#define KEY_CFG_DR_INT              (KEY_CFG_TAP_JERK + 1)
+#define KEY_CFG_AUTH                (KEY_CFG_DR_INT + 1)
+#define KEY_CFG_TAP_SAVE_ACCB       (KEY_CFG_AUTH + 1)
+#define KEY_CFG_TAP_CLEAR_STICKY    (KEY_CFG_TAP_SAVE_ACCB + 1)
+#define KEY_CFG_FIFO_ON_EVENT       (KEY_CFG_TAP_CLEAR_STICKY + 1)
+#define KEY_FCFG_ACCEL_INPUT        (KEY_CFG_FIFO_ON_EVENT + 1)
+#define KEY_FCFG_ACCEL_INIT         (KEY_FCFG_ACCEL_INPUT + 1)
+#define KEY_CFG_23                  (KEY_FCFG_ACCEL_INIT + 1)
+#define KEY_FCFG_1                  (KEY_CFG_23 + 1)
+#define KEY_FCFG_3                  (KEY_FCFG_1 + 1)
+#define KEY_FCFG_2                  (KEY_FCFG_3 + 1)
+#define KEY_CFG_3D                  (KEY_FCFG_2 + 1)
+#define KEY_CFG_3B                  (KEY_CFG_3D + 1)
+#define KEY_CFG_3C                  (KEY_CFG_3B + 1)
+#define KEY_FCFG_5                  (KEY_CFG_3C + 1)
+#define KEY_FCFG_4                  (KEY_FCFG_5 + 1)
+#define KEY_FCFG_7                  (KEY_FCFG_4 + 1)
+#define KEY_FCFG_FSCALE             (KEY_FCFG_7 + 1)
+#define KEY_FCFG_AZ                 (KEY_FCFG_FSCALE + 1)
+#define KEY_FCFG_6                  (KEY_FCFG_AZ + 1)
+#define KEY_FCFG_LSB4               (KEY_FCFG_6 + 1)
+#define KEY_CFG_12                  (KEY_FCFG_LSB4 + 1)
+#define KEY_CFG_14                  (KEY_CFG_12 + 1)
+#define KEY_CFG_15                  (KEY_CFG_14 + 1)
+#define KEY_CFG_16                  (KEY_CFG_15 + 1)
+#define KEY_CFG_18                  (KEY_CFG_16 + 1)
+#define KEY_CFG_6                   (KEY_CFG_18 + 1)
+#define KEY_CFG_7                   (KEY_CFG_6 + 1)
+#define KEY_CFG_4                   (KEY_CFG_7 + 1)
+#define KEY_CFG_5                   (KEY_CFG_4 + 1)
+#define KEY_CFG_2                   (KEY_CFG_5 + 1)
+#define KEY_CFG_3                   (KEY_CFG_2 + 1)
+#define KEY_CFG_1                   (KEY_CFG_3 + 1)
+#define KEY_CFG_EXTERNAL            (KEY_CFG_1 + 1)
+#define KEY_CFG_8                   (KEY_CFG_EXTERNAL + 1)
+#define KEY_CFG_9                   (KEY_CFG_8 + 1)
+#define KEY_CFG_ORIENT_3            (KEY_CFG_9 + 1)
+#define KEY_CFG_ORIENT_2            (KEY_CFG_ORIENT_3 + 1)
+#define KEY_CFG_ORIENT_1            (KEY_CFG_ORIENT_2 + 1)
+#define KEY_CFG_GYRO_SOURCE         (KEY_CFG_ORIENT_1 + 1)
+#define KEY_CFG_ORIENT_IRQ_1        (KEY_CFG_GYRO_SOURCE + 1)
+#define KEY_CFG_ORIENT_IRQ_2        (KEY_CFG_ORIENT_IRQ_1 + 1)
+#define KEY_CFG_ORIENT_IRQ_3        (KEY_CFG_ORIENT_IRQ_2 + 1)
+#define KEY_FCFG_MAG_VAL            (KEY_CFG_ORIENT_IRQ_3 + 1)
+#define KEY_FCFG_MAG_MOV            (KEY_FCFG_MAG_VAL + 1)
+#define KEY_CFG_LP_QUAT             (KEY_FCFG_MAG_MOV + 1)
+
+/* MPU6050 keys */
+#define KEY_CFG_ACCEL_FILTER        (KEY_CFG_LP_QUAT + 1)
+#define KEY_CFG_MOTION_BIAS         (KEY_CFG_ACCEL_FILTER + 1)
+#define KEY_TEMPLABEL               (KEY_CFG_MOTION_BIAS + 1)
+
+#define KEY_D_0_22                  (KEY_TEMPLABEL + 1)
+#define KEY_D_0_24                  (KEY_D_0_22 + 1)
+#define KEY_D_0_36                  (KEY_D_0_24 + 1)
+#define KEY_D_0_52                  (KEY_D_0_36 + 1)
+#define KEY_D_0_96                  (KEY_D_0_52 + 1)
+#define KEY_D_0_104                 (KEY_D_0_96 + 1)
+#define KEY_D_0_108                 (KEY_D_0_104 + 1)
+#define KEY_D_0_163                 (KEY_D_0_108 + 1)
+#define KEY_D_0_188                 (KEY_D_0_163 + 1)
+#define KEY_D_0_192                 (KEY_D_0_188 + 1)
+#define KEY_D_0_224                 (KEY_D_0_192 + 1)
+#define KEY_D_0_228                 (KEY_D_0_224 + 1)
+#define KEY_D_0_232                 (KEY_D_0_228 + 1)
+#define KEY_D_0_236                 (KEY_D_0_232 + 1)
+
+#define KEY_DMP_PREVPTAT            (KEY_D_0_236 + 1)
+#define KEY_D_1_2                   (KEY_DMP_PREVPTAT + 1)
+#define KEY_D_1_4                   (KEY_D_1_2 + 1)
+#define KEY_D_1_8                   (KEY_D_1_4 + 1)
+#define KEY_D_1_10                  (KEY_D_1_8 + 1)
+#define KEY_D_1_24                  (KEY_D_1_10 + 1)
+#define KEY_D_1_28                  (KEY_D_1_24 + 1)
+#define KEY_D_1_36                  (KEY_D_1_28 + 1)
+#define KEY_D_1_40                  (KEY_D_1_36 + 1)
+#define KEY_D_1_44                  (KEY_D_1_40 + 1)
+#define KEY_D_1_72                  (KEY_D_1_44 + 1)
+#define KEY_D_1_74                  (KEY_D_1_72 + 1)
+#define KEY_D_1_79                  (KEY_D_1_74 + 1)
+#define KEY_D_1_88                  (KEY_D_1_79 + 1)
+#define KEY_D_1_90                  (KEY_D_1_88 + 1)
+#define KEY_D_1_92                  (KEY_D_1_90 + 1)
+#define KEY_D_1_96                  (KEY_D_1_92 + 1)
+#define KEY_D_1_98                  (KEY_D_1_96 + 1)
+#define KEY_D_1_100                 (KEY_D_1_98 + 1)
+#define KEY_D_1_106                 (KEY_D_1_100 + 1)
+#define KEY_D_1_108                 (KEY_D_1_106 + 1)
+#define KEY_D_1_112                 (KEY_D_1_108 + 1)
+#define KEY_D_1_128                 (KEY_D_1_112 + 1)
+#define KEY_D_1_152                 (KEY_D_1_128 + 1)
+#define KEY_D_1_160                 (KEY_D_1_152 + 1)
+#define KEY_D_1_168                 (KEY_D_1_160 + 1)
+#define KEY_D_1_175                 (KEY_D_1_168 + 1)
+#define KEY_D_1_176                 (KEY_D_1_175 + 1)
+#define KEY_D_1_178                 (KEY_D_1_176 + 1)
+#define KEY_D_1_179                 (KEY_D_1_178 + 1)
+#define KEY_D_1_218                 (KEY_D_1_179 + 1)
+#define KEY_D_1_232                 (KEY_D_1_218 + 1)
+#define KEY_D_1_236                 (KEY_D_1_232 + 1)
+#define KEY_D_1_240                 (KEY_D_1_236 + 1)
+#define KEY_D_1_244                 (KEY_D_1_240 + 1)
+#define KEY_D_1_250                 (KEY_D_1_244 + 1)
+#define KEY_D_1_252                 (KEY_D_1_250 + 1)
+#define KEY_D_2_12                  (KEY_D_1_252 + 1)
+#define KEY_D_2_96                  (KEY_D_2_12 + 1)
+#define KEY_D_2_108                 (KEY_D_2_96 + 1)
+#define KEY_D_2_208                 (KEY_D_2_108 + 1)
+#define KEY_FLICK_MSG               (KEY_D_2_208 + 1)
+#define KEY_FLICK_COUNTER           (KEY_FLICK_MSG + 1)
+#define KEY_FLICK_LOWER             (KEY_FLICK_COUNTER + 1)
+#define KEY_CFG_FLICK_IN            (KEY_FLICK_LOWER + 1)
+#define KEY_FLICK_UPPER             (KEY_CFG_FLICK_IN + 1)
+#define KEY_CGNOTICE_INTR           (KEY_FLICK_UPPER + 1)
+#define KEY_D_2_224                 (KEY_CGNOTICE_INTR + 1)
+#define KEY_D_2_244                 (KEY_D_2_224 + 1)
+#define KEY_D_2_248                 (KEY_D_2_244 + 1)
+#define KEY_D_2_252                 (KEY_D_2_248 + 1)
+
+#define KEY_D_GYRO_BIAS_X               (KEY_D_2_252 + 1)
+#define KEY_D_GYRO_BIAS_Y               (KEY_D_GYRO_BIAS_X + 1)
+#define KEY_D_GYRO_BIAS_Z               (KEY_D_GYRO_BIAS_Y + 1)
+#define KEY_D_ACC_BIAS_X                (KEY_D_GYRO_BIAS_Z + 1)
+#define KEY_D_ACC_BIAS_Y                (KEY_D_ACC_BIAS_X + 1)
+#define KEY_D_ACC_BIAS_Z                (KEY_D_ACC_BIAS_Y + 1)
+#define KEY_D_GYRO_ENABLE               (KEY_D_ACC_BIAS_Z + 1)
+#define KEY_D_ACCEL_ENABLE              (KEY_D_GYRO_ENABLE + 1)
+#define KEY_D_QUAT_ENABLE               (KEY_D_ACCEL_ENABLE +1)
+#define KEY_D_OUTPUT_ENABLE             (KEY_D_QUAT_ENABLE + 1)
+#define KEY_D_CR_TIME_G                 (KEY_D_OUTPUT_ENABLE + 1)
+#define KEY_D_CR_TIME_A                 (KEY_D_CR_TIME_G + 1)
+#define KEY_D_CR_TIME_Q                 (KEY_D_CR_TIME_A + 1)
+#define KEY_D_CS_TAX                    (KEY_D_CR_TIME_Q + 1)
+#define KEY_D_CS_TAY                    (KEY_D_CS_TAX + 1)
+#define KEY_D_CS_TAZ                    (KEY_D_CS_TAY + 1)
+#define KEY_D_CS_TGX                    (KEY_D_CS_TAZ + 1)
+#define KEY_D_CS_TGY                    (KEY_D_CS_TGX + 1)
+#define KEY_D_CS_TGZ                    (KEY_D_CS_TGY + 1)
+#define KEY_D_CS_TQ0                    (KEY_D_CS_TGZ + 1)
+#define KEY_D_CS_TQ1                    (KEY_D_CS_TQ0 + 1)
+#define KEY_D_CS_TQ2                    (KEY_D_CS_TQ1 + 1)
+#define KEY_D_CS_TQ3                    (KEY_D_CS_TQ2 + 1)
+
+/* Compass keys */
+#define KEY_CPASS_BIAS_X            (KEY_D_CS_TQ3 + 1)
+#define KEY_CPASS_BIAS_Y            (KEY_CPASS_BIAS_X + 1)
+#define KEY_CPASS_BIAS_Z            (KEY_CPASS_BIAS_Y + 1)
+#define KEY_CPASS_MTX_00            (KEY_CPASS_BIAS_Z + 1)
+#define KEY_CPASS_MTX_01            (KEY_CPASS_MTX_00 + 1)
+#define KEY_CPASS_MTX_02            (KEY_CPASS_MTX_01 + 1)
+#define KEY_CPASS_MTX_10            (KEY_CPASS_MTX_02 + 1)
+#define KEY_CPASS_MTX_11            (KEY_CPASS_MTX_10 + 1)
+#define KEY_CPASS_MTX_12            (KEY_CPASS_MTX_11 + 1)
+#define KEY_CPASS_MTX_20            (KEY_CPASS_MTX_12 + 1)
+#define KEY_CPASS_MTX_21            (KEY_CPASS_MTX_20 + 1)
+#define KEY_CPASS_MTX_22            (KEY_CPASS_MTX_21 + 1)
+
+/* Gesture Keys */
+#define KEY_DMP_TAPW_MIN            (KEY_CPASS_MTX_22 + 1)
+#define KEY_DMP_TAP_THR_X           (KEY_DMP_TAPW_MIN + 1)
+#define KEY_DMP_TAP_THR_Y           (KEY_DMP_TAP_THR_X + 1)
+#define KEY_DMP_TAP_THR_Z           (KEY_DMP_TAP_THR_Y + 1)
+#define KEY_DMP_SH_TH_Y             (KEY_DMP_TAP_THR_Z + 1)
+#define KEY_DMP_SH_TH_X             (KEY_DMP_SH_TH_Y + 1)
+#define KEY_DMP_SH_TH_Z             (KEY_DMP_SH_TH_X + 1)
+#define KEY_DMP_ORIENT              (KEY_DMP_SH_TH_Z + 1)
+#define KEY_D_ACT0                  (KEY_DMP_ORIENT + 1)
+#define KEY_D_ACSX                  (KEY_D_ACT0 + 1)
+#define KEY_D_ACSY                  (KEY_D_ACSX + 1)
+#define KEY_D_ACSZ                  (KEY_D_ACSY + 1)
+
+#define KEY_X_GRT_Y_TMP             (KEY_D_ACSZ + 1)
+#define KEY_SKIP_X_GRT_Y_TMP        (KEY_X_GRT_Y_TMP + 1)
+#define KEY_SKIP_END_COMPARE        (KEY_SKIP_X_GRT_Y_TMP + 1)
+#define KEY_END_COMPARE_Y_X_TMP2    (KEY_SKIP_END_COMPARE + 1)       
+#define KEY_CFG_ANDROID_ORIENT_INT  (KEY_END_COMPARE_Y_X_TMP2 + 1)
+#define KEY_NO_ORIENT_INTERRUPT     (KEY_CFG_ANDROID_ORIENT_INT + 1)
+#define KEY_END_COMPARE_Y_X_TMP     (KEY_NO_ORIENT_INTERRUPT + 1)
+#define KEY_END_ORIENT_1            (KEY_END_COMPARE_Y_X_TMP + 1)
+#define KEY_END_COMPARE_Y_X         (KEY_END_ORIENT_1 + 1) 
+#define KEY_END_ORIENT              (KEY_END_COMPARE_Y_X + 1)
+#define KEY_X_GRT_Y                 (KEY_END_ORIENT + 1)
+#define KEY_NOT_TIME_MINUS_1        (KEY_X_GRT_Y + 1)       
+#define KEY_END_COMPARE_Y_X_TMP3    (KEY_NOT_TIME_MINUS_1 + 1) 
+#define KEY_X_GRT_Y_TMP2            (KEY_END_COMPARE_Y_X_TMP3 + 1)
+
+/* Authenticate Keys */
+#define KEY_D_AUTH_OUT              (KEY_X_GRT_Y_TMP2 + 1)
+#define KEY_D_AUTH_IN               (KEY_D_AUTH_OUT + 1)
+#define KEY_D_AUTH_A                (KEY_D_AUTH_IN + 1)
+#define KEY_D_AUTH_B                (KEY_D_AUTH_A + 1)
+
+/* Pedometer standalone only keys */
+#define KEY_D_PEDSTD_BP_B           (KEY_D_AUTH_B + 1)
+#define KEY_D_PEDSTD_HP_A           (KEY_D_PEDSTD_BP_B + 1)
+#define KEY_D_PEDSTD_HP_B           (KEY_D_PEDSTD_HP_A + 1)
+#define KEY_D_PEDSTD_BP_A4          (KEY_D_PEDSTD_HP_B + 1)
+#define KEY_D_PEDSTD_BP_A3          (KEY_D_PEDSTD_BP_A4 + 1)
+#define KEY_D_PEDSTD_BP_A2          (KEY_D_PEDSTD_BP_A3 + 1)
+#define KEY_D_PEDSTD_BP_A1          (KEY_D_PEDSTD_BP_A2 + 1)
+#define KEY_D_PEDSTD_INT_THRSH      (KEY_D_PEDSTD_BP_A1 + 1)
+#define KEY_D_PEDSTD_CLIP           (KEY_D_PEDSTD_INT_THRSH + 1)
+#define KEY_D_PEDSTD_SB             (KEY_D_PEDSTD_CLIP + 1)
+#define KEY_D_PEDSTD_SB_TIME        (KEY_D_PEDSTD_SB + 1)
+#define KEY_D_PEDSTD_PEAKTHRSH      (KEY_D_PEDSTD_SB_TIME + 1)
+#define KEY_D_PEDSTD_TIML           (KEY_D_PEDSTD_PEAKTHRSH + 1)
+#define KEY_D_PEDSTD_TIMH           (KEY_D_PEDSTD_TIML + 1)
+#define KEY_D_PEDSTD_PEAK           (KEY_D_PEDSTD_TIMH + 1)
+#define KEY_D_PEDSTD_TIMECTR        (KEY_D_PEDSTD_PEAK + 1)
+#define KEY_D_PEDSTD_STEPCTR        (KEY_D_PEDSTD_TIMECTR + 1)
+#define KEY_D_PEDSTD_WALKTIME       (KEY_D_PEDSTD_STEPCTR + 1)
+#define KEY_D_PEDSTD_DECI           (KEY_D_PEDSTD_WALKTIME + 1)
+
+/*Host Based No Motion*/
+#define KEY_D_HOST_NO_MOT           (KEY_D_PEDSTD_DECI + 1)
+
+/* EIS keys */
+#define KEY_P_EIS_FIFO_FOOTER       (KEY_D_HOST_NO_MOT + 1)
+#define KEY_P_EIS_FIFO_YSHIFT       (KEY_P_EIS_FIFO_FOOTER + 1)
+#define KEY_P_EIS_DATA_RATE         (KEY_P_EIS_FIFO_YSHIFT + 1)
+#define KEY_P_EIS_FIFO_XSHIFT       (KEY_P_EIS_DATA_RATE + 1)
+#define KEY_P_EIS_FIFO_SYNC         (KEY_P_EIS_FIFO_XSHIFT + 1)
+#define KEY_P_EIS_FIFO_ZSHIFT       (KEY_P_EIS_FIFO_SYNC + 1)
+#define KEY_P_EIS_FIFO_READY        (KEY_P_EIS_FIFO_ZSHIFT + 1)
+#define KEY_DMP_FOOTER              (KEY_P_EIS_FIFO_READY + 1)
+#define KEY_DMP_INTX_HC             (KEY_DMP_FOOTER + 1)
+#define KEY_DMP_INTX_PH             (KEY_DMP_INTX_HC + 1)
+#define KEY_DMP_INTX_SH             (KEY_DMP_INTX_PH + 1)
+#define KEY_DMP_AINV_SH             (KEY_DMP_INTX_SH + 1)
+#define KEY_DMP_A_INV_XH            (KEY_DMP_AINV_SH + 1)
+#define KEY_DMP_AINV_PH             (KEY_DMP_A_INV_XH + 1)
+#define KEY_DMP_CTHX_H              (KEY_DMP_AINV_PH + 1)
+#define KEY_DMP_CTHY_H              (KEY_DMP_CTHX_H + 1)
+#define KEY_DMP_CTHZ_H              (KEY_DMP_CTHY_H + 1)
+#define KEY_DMP_NCTHX_H             (KEY_DMP_CTHZ_H + 1)
+#define KEY_DMP_NCTHY_H             (KEY_DMP_NCTHX_H + 1)
+#define KEY_DMP_NCTHZ_H             (KEY_DMP_NCTHY_H + 1)
+#define KEY_DMP_CTSQ_XH             (KEY_DMP_NCTHZ_H + 1)
+#define KEY_DMP_CTSQ_YH             (KEY_DMP_CTSQ_XH + 1)
+#define KEY_DMP_CTSQ_ZH             (KEY_DMP_CTSQ_YH + 1)
+#define KEY_DMP_INTX_H              (KEY_DMP_CTSQ_ZH + 1)
+#define KEY_DMP_INTY_H              (KEY_DMP_INTX_H + 1)
+#define KEY_DMP_INTZ_H              (KEY_DMP_INTY_H + 1)
+//#define KEY_DMP_HPX_H               (KEY_DMP_INTZ_H + 1)
+//#define KEY_DMP_HPY_H               (KEY_DMP_HPX_H + 1)
+//#define KEY_DMP_HPZ_H               (KEY_DMP_HPY_H + 1)
+
+/* Stream keys */
+#define KEY_STREAM_P_GYRO_Z         (KEY_DMP_INTZ_H + 1)
+#define KEY_STREAM_P_GYRO_Y         (KEY_STREAM_P_GYRO_Z + 1)
+#define KEY_STREAM_P_GYRO_X         (KEY_STREAM_P_GYRO_Y + 1)
+#define KEY_STREAM_P_TEMP           (KEY_STREAM_P_GYRO_X + 1)
+#define KEY_STREAM_P_AUX_Y          (KEY_STREAM_P_TEMP + 1)
+#define KEY_STREAM_P_AUX_X          (KEY_STREAM_P_AUX_Y + 1)
+#define KEY_STREAM_P_AUX_Z          (KEY_STREAM_P_AUX_X + 1)
+#define KEY_STREAM_P_ACCEL_Y        (KEY_STREAM_P_AUX_Z + 1)
+#define KEY_STREAM_P_ACCEL_X        (KEY_STREAM_P_ACCEL_Y + 1)
+#define KEY_STREAM_P_FOOTER         (KEY_STREAM_P_ACCEL_X + 1)
+#define KEY_STREAM_P_ACCEL_Z        (KEY_STREAM_P_FOOTER + 1)
+
+#define NUM_KEYS                    (KEY_STREAM_P_ACCEL_Z + 1)
+
+typedef struct {
+    unsigned short key;
+    unsigned short addr;
+} tKeyLabel;
+
+#define DINA0A 0x0a
+#define DINA22 0x22
+#define DINA42 0x42
+#define DINA5A 0x5a
+
+#define DINA06 0x06
+#define DINA0E 0x0e
+#define DINA16 0x16
+#define DINA1E 0x1e
+#define DINA26 0x26
+#define DINA2E 0x2e
+#define DINA36 0x36
+#define DINA3E 0x3e
+#define DINA46 0x46
+#define DINA4E 0x4e
+#define DINA56 0x56
+#define DINA5E 0x5e
+#define DINA66 0x66
+#define DINA6E 0x6e
+#define DINA76 0x76
+#define DINA7E 0x7e
+
+#define DINA00 0x00
+#define DINA08 0x08
+#define DINA10 0x10
+#define DINA18 0x18
+#define DINA20 0x20
+#define DINA28 0x28
+#define DINA30 0x30
+#define DINA38 0x38
+#define DINA40 0x40
+#define DINA48 0x48
+#define DINA50 0x50
+#define DINA58 0x58
+#define DINA60 0x60
+#define DINA68 0x68
+#define DINA70 0x70
+#define DINA78 0x78
+
+#define DINA04 0x04
+#define DINA0C 0x0c
+#define DINA14 0x14
+#define DINA1C 0x1C
+#define DINA24 0x24
+#define DINA2C 0x2c
+#define DINA34 0x34
+#define DINA3C 0x3c
+#define DINA44 0x44
+#define DINA4C 0x4c
+#define DINA54 0x54
+#define DINA5C 0x5c
+#define DINA64 0x64
+#define DINA6C 0x6c
+#define DINA74 0x74
+#define DINA7C 0x7c
+
+#define DINA01 0x01
+#define DINA09 0x09
+#define DINA11 0x11
+#define DINA19 0x19
+#define DINA21 0x21
+#define DINA29 0x29
+#define DINA31 0x31
+#define DINA39 0x39
+#define DINA41 0x41
+#define DINA49 0x49
+#define DINA51 0x51
+#define DINA59 0x59
+#define DINA61 0x61
+#define DINA69 0x69
+#define DINA71 0x71
+#define DINA79 0x79
+
+#define DINA25 0x25
+#define DINA2D 0x2d
+#define DINA35 0x35
+#define DINA3D 0x3d
+#define DINA4D 0x4d
+#define DINA55 0x55
+#define DINA5D 0x5D
+#define DINA6D 0x6d
+#define DINA75 0x75
+#define DINA7D 0x7d
+
+#define DINADC 0xdc
+#define DINAF2 0xf2
+#define DINAAB 0xab
+#define DINAAA 0xaa
+#define DINAF1 0xf1
+#define DINADF 0xdf
+#define DINADA 0xda
+#define DINAB1 0xb1
+#define DINAB9 0xb9
+#define DINAF3 0xf3
+#define DINA8B 0x8b
+#define DINAA3 0xa3
+#define DINA91 0x91
+#define DINAB6 0xb6
+#define DINAB4 0xb4
+
+
+#define DINC00 0x00
+#define DINC01 0x01
+#define DINC02 0x02
+#define DINC03 0x03
+#define DINC08 0x08
+#define DINC09 0x09
+#define DINC0A 0x0a
+#define DINC0B 0x0b
+#define DINC10 0x10
+#define DINC11 0x11
+#define DINC12 0x12
+#define DINC13 0x13
+#define DINC18 0x18
+#define DINC19 0x19
+#define DINC1A 0x1a
+#define DINC1B 0x1b
+
+#define DINC20 0x20
+#define DINC21 0x21
+#define DINC22 0x22
+#define DINC23 0x23
+#define DINC28 0x28
+#define DINC29 0x29
+#define DINC2A 0x2a
+#define DINC2B 0x2b
+#define DINC30 0x30
+#define DINC31 0x31
+#define DINC32 0x32
+#define DINC33 0x33
+#define DINC38 0x38
+#define DINC39 0x39
+#define DINC3A 0x3a
+#define DINC3B 0x3b
+
+#define DINC40 0x40
+#define DINC41 0x41
+#define DINC42 0x42
+#define DINC43 0x43
+#define DINC48 0x48
+#define DINC49 0x49
+#define DINC4A 0x4a
+#define DINC4B 0x4b
+#define DINC50 0x50
+#define DINC51 0x51
+#define DINC52 0x52
+#define DINC53 0x53
+#define DINC58 0x58
+#define DINC59 0x59
+#define DINC5A 0x5a
+#define DINC5B 0x5b
+
+#define DINC60 0x60
+#define DINC61 0x61
+#define DINC62 0x62
+#define DINC63 0x63
+#define DINC68 0x68
+#define DINC69 0x69
+#define DINC6A 0x6a
+#define DINC6B 0x6b
+#define DINC70 0x70
+#define DINC71 0x71
+#define DINC72 0x72
+#define DINC73 0x73
+#define DINC78 0x78
+#define DINC79 0x79
+#define DINC7A 0x7a
+#define DINC7B 0x7b
+
+#define DIND40 0x40
+
+
+#define DINA80 0x80
+#define DINA90 0x90
+#define DINAA0 0xa0
+#define DINAC9 0xc9
+#define DINACB 0xcb
+#define DINACD 0xcd
+#define DINACF 0xcf
+#define DINAC8 0xc8
+#define DINACA 0xca
+#define DINACC 0xcc
+#define DINACE 0xce
+#define DINAD8 0xd8
+#define DINADD 0xdd
+#define DINAF8 0xf0
+#define DINAFE 0xfe
+
+#define DINBF8 0xf8
+#define DINAC0 0xb0
+#define DINAC1 0xb1
+#define DINAC2 0xb4
+#define DINAC3 0xb5
+#define DINAC4 0xb8
+#define DINAC5 0xb9
+#define DINBC0 0xc0
+#define DINBC2 0xc2
+#define DINBC4 0xc4
+#define DINBC6 0xc6
+
+
+
+#endif // DMPKEY_H__
+
diff -r 000000000000 -r 5fa30cf392c3 dmpmap.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmpmap.h	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,265 @@
+/*
+ $License:
+    Copyright (C) 2011 InvenSense Corporation, All Rights Reserved.
+ $
+ */
+#ifndef DMPMAP_H
+#define DMPMAP_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define DMP_PTAT    0
+#define DMP_XGYR    2
+#define DMP_YGYR    4
+#define DMP_ZGYR    6
+#define DMP_XACC    8
+#define DMP_YACC    10
+#define DMP_ZACC    12
+#define DMP_ADC1    14
+#define DMP_ADC2    16
+#define DMP_ADC3    18
+#define DMP_BIASUNC    20
+#define DMP_FIFORT    22
+#define DMP_INVGSFH    24
+#define DMP_INVGSFL    26
+#define DMP_1H    28
+#define DMP_1L    30
+#define DMP_BLPFSTCH    32
+#define DMP_BLPFSTCL    34
+#define DMP_BLPFSXH    36
+#define DMP_BLPFSXL    38
+#define DMP_BLPFSYH    40
+#define DMP_BLPFSYL    42
+#define DMP_BLPFSZH    44
+#define DMP_BLPFSZL    46
+#define DMP_BLPFMTC    48
+#define DMP_SMC    50
+#define DMP_BLPFMXH    52
+#define DMP_BLPFMXL    54
+#define DMP_BLPFMYH    56
+#define DMP_BLPFMYL    58
+#define DMP_BLPFMZH    60
+#define DMP_BLPFMZL    62
+#define DMP_BLPFC    64
+#define DMP_SMCTH    66
+#define DMP_0H2    68
+#define DMP_0L2    70
+#define DMP_BERR2H    72
+#define DMP_BERR2L    74
+#define DMP_BERR2NH    76
+#define DMP_SMCINC    78
+#define DMP_ANGVBXH    80
+#define DMP_ANGVBXL    82
+#define DMP_ANGVBYH    84
+#define DMP_ANGVBYL    86
+#define DMP_ANGVBZH    88
+#define DMP_ANGVBZL    90
+#define DMP_BERR1H    92
+#define DMP_BERR1L    94
+#define DMP_ATCH    96
+#define DMP_BIASUNCSF    98
+#define DMP_ACT2H    100
+#define DMP_ACT2L    102
+#define DMP_GSFH    104
+#define DMP_GSFL    106
+#define DMP_GH    108
+#define DMP_GL    110
+#define DMP_0_5H    112
+#define DMP_0_5L    114
+#define DMP_0_0H    116
+#define DMP_0_0L    118
+#define DMP_1_0H    120
+#define DMP_1_0L    122
+#define DMP_1_5H    124
+#define DMP_1_5L    126
+#define DMP_TMP1AH    128
+#define DMP_TMP1AL    130
+#define DMP_TMP2AH    132
+#define DMP_TMP2AL    134
+#define DMP_TMP3AH    136
+#define DMP_TMP3AL    138
+#define DMP_TMP4AH    140
+#define DMP_TMP4AL    142
+#define DMP_XACCW    144
+#define DMP_TMP5    146
+#define DMP_XACCB    148
+#define DMP_TMP8    150
+#define DMP_YACCB    152
+#define DMP_TMP9    154
+#define DMP_ZACCB    156
+#define DMP_TMP10    158
+#define DMP_DZH    160
+#define DMP_DZL    162
+#define DMP_XGCH    164
+#define DMP_XGCL    166
+#define DMP_YGCH    168
+#define DMP_YGCL    170
+#define DMP_ZGCH    172
+#define DMP_ZGCL    174
+#define DMP_YACCW    176
+#define DMP_TMP7    178
+#define DMP_AFB1H    180
+#define DMP_AFB1L    182
+#define DMP_AFB2H    184
+#define DMP_AFB2L    186
+#define DMP_MAGFBH    188
+#define DMP_MAGFBL    190
+#define DMP_QT1H    192
+#define DMP_QT1L    194
+#define DMP_QT2H    196
+#define DMP_QT2L    198
+#define DMP_QT3H    200
+#define DMP_QT3L    202
+#define DMP_QT4H    204
+#define DMP_QT4L    206
+#define DMP_CTRL1H    208
+#define DMP_CTRL1L    210
+#define DMP_CTRL2H    212
+#define DMP_CTRL2L    214
+#define DMP_CTRL3H    216
+#define DMP_CTRL3L    218
+#define DMP_CTRL4H    220
+#define DMP_CTRL4L    222
+#define DMP_CTRLS1    224
+#define DMP_CTRLSF1    226
+#define DMP_CTRLS2    228
+#define DMP_CTRLSF2    230
+#define DMP_CTRLS3    232
+#define DMP_CTRLSFNLL    234
+#define DMP_CTRLS4    236
+#define DMP_CTRLSFNL2    238
+#define DMP_CTRLSFNL    240
+#define DMP_TMP30    242
+#define DMP_CTRLSFJT    244
+#define DMP_TMP31    246
+#define DMP_TMP11    248
+#define DMP_CTRLSF2_2    250
+#define DMP_TMP12    252
+#define DMP_CTRLSF1_2    254
+#define DMP_PREVPTAT    256
+#define DMP_ACCZB    258
+#define DMP_ACCXB    264
+#define DMP_ACCYB    266
+#define DMP_1HB    272
+#define DMP_1LB    274
+#define DMP_0H    276
+#define DMP_0L    278
+#define DMP_ASR22H    280
+#define DMP_ASR22L    282
+#define DMP_ASR6H    284
+#define DMP_ASR6L    286
+#define DMP_TMP13    288
+#define DMP_TMP14    290
+#define DMP_FINTXH    292
+#define DMP_FINTXL    294
+#define DMP_FINTYH    296
+#define DMP_FINTYL    298
+#define DMP_FINTZH    300
+#define DMP_FINTZL    302
+#define DMP_TMP1BH    304
+#define DMP_TMP1BL    306
+#define DMP_TMP2BH    308
+#define DMP_TMP2BL    310
+#define DMP_TMP3BH    312
+#define DMP_TMP3BL    314
+#define DMP_TMP4BH    316
+#define DMP_TMP4BL    318
+#define DMP_STXG    320
+#define DMP_ZCTXG    322
+#define DMP_STYG    324
+#define DMP_ZCTYG    326
+#define DMP_STZG    328
+#define DMP_ZCTZG    330
+#define DMP_CTRLSFJT2    332
+#define DMP_CTRLSFJTCNT    334
+#define DMP_PVXG    336
+#define DMP_TMP15    338
+#define DMP_PVYG    340
+#define DMP_TMP16    342
+#define DMP_PVZG    344
+#define DMP_TMP17    346
+#define DMP_MNMFLAGH    352
+#define DMP_MNMFLAGL    354
+#define DMP_MNMTMH    356
+#define DMP_MNMTML    358
+#define DMP_MNMTMTHRH    360
+#define DMP_MNMTMTHRL    362
+#define DMP_MNMTHRH    364
+#define DMP_MNMTHRL    366
+#define DMP_ACCQD4H    368
+#define DMP_ACCQD4L    370
+#define DMP_ACCQD5H    372
+#define DMP_ACCQD5L    374
+#define DMP_ACCQD6H    376
+#define DMP_ACCQD6L    378
+#define DMP_ACCQD7H    380
+#define DMP_ACCQD7L    382
+#define DMP_ACCQD0H    384
+#define DMP_ACCQD0L    386
+#define DMP_ACCQD1H    388
+#define DMP_ACCQD1L    390
+#define DMP_ACCQD2H    392
+#define DMP_ACCQD2L    394
+#define DMP_ACCQD3H    396
+#define DMP_ACCQD3L    398
+#define DMP_XN2H    400
+#define DMP_XN2L    402
+#define DMP_XN1H    404
+#define DMP_XN1L    406
+#define DMP_YN2H    408
+#define DMP_YN2L    410
+#define DMP_YN1H    412
+#define DMP_YN1L    414
+#define DMP_YH    416
+#define DMP_YL    418
+#define DMP_B0H    420
+#define DMP_B0L    422
+#define DMP_A1H    424
+#define DMP_A1L    426
+#define DMP_A2H    428
+#define DMP_A2L    430
+#define DMP_SEM1    432
+#define DMP_FIFOCNT    434
+#define DMP_SH_TH_X    436
+#define DMP_PACKET    438
+#define DMP_SH_TH_Y    440
+#define DMP_FOOTER    442
+#define DMP_SH_TH_Z    444
+#define DMP_TEMP29    448
+#define DMP_TEMP30    450
+#define DMP_XACCB_PRE    452
+#define DMP_XACCB_PREL    454
+#define DMP_YACCB_PRE    456
+#define DMP_YACCB_PREL    458
+#define DMP_ZACCB_PRE    460
+#define DMP_ZACCB_PREL    462
+#define DMP_TMP22    464
+#define DMP_TAP_TIMER    466
+#define DMP_TAP_THX    468
+#define DMP_TAP_THY    472
+#define DMP_TAP_THZ    476
+#define DMP_TAPW_MIN    478
+#define DMP_TMP25    480
+#define DMP_TMP26    482
+#define DMP_TMP27    484
+#define DMP_TMP28    486
+#define DMP_ORIENT    488
+#define DMP_THRSH    490
+#define DMP_ENDIANH    492
+#define DMP_ENDIANL    494
+#define DMP_BLPFNMTCH    496
+#define DMP_BLPFNMTCL    498
+#define DMP_BLPFNMXH    500
+#define DMP_BLPFNMXL    502
+#define DMP_BLPFNMYH    504
+#define DMP_BLPFNMYL    506
+#define DMP_BLPFNMZH    508
+#define DMP_BLPFNMZL    510
+#ifdef __cplusplus
+}
+#endif
+#endif // DMPMAP_H
+
diff -r 000000000000 -r 5fa30cf392c3 inv_mpu.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inv_mpu.c	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,3291 @@
+/*
+ $License:
+    Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved.
+    See included License.txt for License information.
+ $
+ */
+/**
+ *  @addtogroup  DRIVERS Sensor Driver Layer
+ *  @brief       Hardware drivers to communicate with sensors via I2C.
+ *
+ *  @{
+ *      @file       inv_mpu.c
+ *      @brief      An I2C-based driver for Invensense gyroscopes.
+ *      @details    This driver currently works for the following devices:
+ *                  MPU6050
+ *                  MPU6500
+ *                  MPU9150 (or MPU6050 w/ AK8975 on the auxiliary bus)
+ *                  MPU9250 (or MPU6500 w/ AK8963 on the auxiliary bus)
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "inv_mpu.h"
+
+/* The following functions must be defined for this platform:
+ * i2c_write(unsigned char slave_addr, unsigned char reg_addr,
+ *      unsigned char length, unsigned char const *data)
+ * i2c_read(unsigned char slave_addr, unsigned char reg_addr,
+ *      unsigned char length, unsigned char *data)
+ * delay_ms(unsigned long num_ms)
+ * get_ms(unsigned long *count)
+ * reg_int_cb(void (*cb)(void), unsigned char port, unsigned char pin)
+ * labs(long x)
+ * fabsf(float x)
+ * min(int a, int b)
+ */
+#if defined EMPL_TARGET_STM32F4
+#include "i2c.h"   
+#include "main.h"
+#include "log.h"
+#include "board-st_discovery.h"
+   
+#define i2c_write   Sensors_I2C_WriteRegister
+#define i2c_read    Sensors_I2C_ReadRegister 
+#define delay_ms    mdelay
+#define get_ms      get_tick_count
+#define log_i       MPL_LOGI
+#define log_e       MPL_LOGE
+#define min(a,b) ((a<b)?a:b)
+   
+#elif defined MOTION_DRIVER_TARGET_MSP430
+#include "msp430.h"
+#include "msp430_i2c.h"
+#include "msp430_clock.h"
+#include "msp430_interrupt.h"
+#define i2c_write   msp430_i2c_write
+#define i2c_read    msp430_i2c_read
+#define delay_ms    msp430_delay_ms
+#define get_ms      msp430_get_clock_ms
+static inline int reg_int_cb(struct int_param_s *int_param)
+{
+    return msp430_reg_int_cb(int_param->cb, int_param->pin, int_param->lp_exit,
+        int_param->active_low);
+}
+#define log_i(...)     do {} while (0)
+#define log_e(...)     do {} while (0)
+/* labs is already defined by TI's toolchain. */
+/* fabs is for doubles. fabsf is for floats. */
+#define fabs        fabsf
+#define min(a,b) ((a<b)?a:b)
+#elif defined EMPL_TARGET_MSP430
+#include "msp430.h"
+#include "msp430_i2c.h"
+#include "msp430_clock.h"
+#include "msp430_interrupt.h"
+#include "log.h"
+#define i2c_write   msp430_i2c_write
+#define i2c_read    msp430_i2c_read
+#define delay_ms    msp430_delay_ms
+#define get_ms      msp430_get_clock_ms
+static inline int reg_int_cb(struct int_param_s *int_param)
+{
+    return msp430_reg_int_cb(int_param->cb, int_param->pin, int_param->lp_exit,
+        int_param->active_low);
+}
+#define log_i       MPL_LOGI
+#define log_e       MPL_LOGE
+/* labs is already defined by TI's toolchain. */
+/* fabs is for doubles. fabsf is for floats. */
+#define fabs        fabsf
+#define min(a,b) ((a<b)?a:b)
+#elif defined EMPL_TARGET_UC3L0
+/* Instead of using the standard TWI driver from the ASF library, we're using
+ * a TWI driver that follows the slave address + register address convention.
+ */
+#include "twi.h"
+#include "delay.h"
+#include "sysclk.h"
+#include "log.h"
+#include "sensors_xplained.h"
+#include "uc3l0_clock.h"
+#define i2c_write(a, b, c, d)   twi_write(a, b, d, c)
+#define i2c_read(a, b, c, d)    twi_read(a, b, d, c)
+/* delay_ms is a function already defined in ASF. */
+#define get_ms  uc3l0_get_clock_ms
+static inline int reg_int_cb(struct int_param_s *int_param)
+{
+    sensor_board_irq_connect(int_param->pin, int_param->cb, int_param->arg);
+    return 0;
+}
+#define log_i       MPL_LOGI
+#define log_e       MPL_LOGE
+/* UC3 is a 32-bit processor, so abs and labs are equivalent. */
+#define labs        abs
+#define fabs(x)     (((x)>0)?(x):-(x))
+#else
+#error  Gyro driver is missing the system layer implementations.
+#endif
+
+#if !defined MPU6050 && !defined MPU9150 && !defined MPU6500 && !defined MPU9250
+#error  Which gyro are you using? Define MPUxxxx in your compiler options.
+#endif
+
+/* Time for some messy macro work. =]
+ * #define MPU9150
+ * is equivalent to..
+ * #define MPU6050
+ * #define AK8975_SECONDARY
+ *
+ * #define MPU9250
+ * is equivalent to..
+ * #define MPU6500
+ * #define AK8963_SECONDARY
+ */
+#if defined MPU9150
+#ifndef MPU6050
+#define MPU6050
+#endif                          /* #ifndef MPU6050 */
+#if defined AK8963_SECONDARY
+#error "MPU9150 and AK8963_SECONDARY cannot both be defined."
+#elif !defined AK8975_SECONDARY /* #if defined AK8963_SECONDARY */
+#define AK8975_SECONDARY
+#endif                          /* #if defined AK8963_SECONDARY */
+#elif defined MPU9250           /* #if defined MPU9150 */
+#ifndef MPU6500
+#define MPU6500
+#endif                          /* #ifndef MPU6500 */
+#if defined AK8975_SECONDARY
+#error "MPU9250 and AK8975_SECONDARY cannot both be defined."
+#elif !defined AK8963_SECONDARY /* #if defined AK8975_SECONDARY */
+#define AK8963_SECONDARY
+#endif                          /* #if defined AK8975_SECONDARY */
+#endif                          /* #if defined MPU9150 */
+
+#if defined AK8975_SECONDARY || defined AK8963_SECONDARY
+#define AK89xx_SECONDARY
+#else
+/* #warning "No compass = less profit for Invensense. Lame." */
+#endif
+
+static int set_int_enable(unsigned char enable);
+
+/* Hardware registers needed by driver. */
+struct gyro_reg_s {
+    unsigned char who_am_i;
+    unsigned char rate_div;
+    unsigned char lpf;
+    unsigned char prod_id;
+    unsigned char user_ctrl;
+    unsigned char fifo_en;
+    unsigned char gyro_cfg;
+    unsigned char accel_cfg;
+    unsigned char accel_cfg2;
+    unsigned char lp_accel_odr;
+    unsigned char motion_thr;
+    unsigned char motion_dur;
+    unsigned char fifo_count_h;
+    unsigned char fifo_r_w;
+    unsigned char raw_gyro;
+    unsigned char raw_accel;
+    unsigned char temp;
+    unsigned char int_enable;
+    unsigned char dmp_int_status;
+    unsigned char int_status;
+    unsigned char accel_intel;
+    unsigned char pwr_mgmt_1;
+    unsigned char pwr_mgmt_2;
+    unsigned char int_pin_cfg;
+    unsigned char mem_r_w;
+    unsigned char accel_offs;
+    unsigned char i2c_mst;
+    unsigned char bank_sel;
+    unsigned char mem_start_addr;
+    unsigned char prgm_start_h;
+#if defined AK89xx_SECONDARY
+    unsigned char s0_addr;
+    unsigned char s0_reg;
+    unsigned char s0_ctrl;
+    unsigned char s1_addr;
+    unsigned char s1_reg;
+    unsigned char s1_ctrl;
+    unsigned char s4_ctrl;
+    unsigned char s0_do;
+    unsigned char s1_do;
+    unsigned char i2c_delay_ctrl;
+    unsigned char raw_compass;
+    /* The I2C_MST_VDDIO bit is in this register. */
+    unsigned char yg_offs_tc;
+#endif
+};
+
+/* Information specific to a particular device. */
+struct hw_s {
+    unsigned char addr;
+    unsigned short max_fifo;
+    unsigned char num_reg;
+    unsigned short temp_sens;
+    short temp_offset;
+    unsigned short bank_size;
+#if defined AK89xx_SECONDARY
+    unsigned short compass_fsr;
+#endif
+};
+
+/* When entering motion interrupt mode, the driver keeps track of the
+ * previous state so that it can be restored at a later time.
+ * TODO: This is tacky. Fix it.
+ */
+struct motion_int_cache_s {
+    unsigned short gyro_fsr;
+    unsigned char accel_fsr;
+    unsigned short lpf;
+    unsigned short sample_rate;
+    unsigned char sensors_on;
+    unsigned char fifo_sensors;
+    unsigned char dmp_on;
+};
+
+/* Cached chip configuration data.
+ * TODO: A lot of these can be handled with a bitmask.
+ */
+struct chip_cfg_s {
+    /* Matches gyro_cfg >> 3 & 0x03 */
+    unsigned char gyro_fsr;
+    /* Matches accel_cfg >> 3 & 0x03 */
+    unsigned char accel_fsr;
+    /* Enabled sensors. Uses same masks as fifo_en, NOT pwr_mgmt_2. */
+    unsigned char sensors;
+    /* Matches config register. */
+    unsigned char lpf;
+    unsigned char clk_src;
+    /* Sample rate, NOT rate divider. */
+    unsigned short sample_rate;
+    /* Matches fifo_en register. */
+    unsigned char fifo_enable;
+    /* Matches int enable register. */
+    unsigned char int_enable;
+    /* 1 if devices on auxiliary I2C bus appear on the primary. */
+    unsigned char bypass_mode;
+    /* 1 if half-sensitivity.
+     * NOTE: This doesn't belong here, but everything else in hw_s is const,
+     * and this allows us to save some precious RAM.
+     */
+    unsigned char accel_half;
+    /* 1 if device in low-power accel-only mode. */
+    unsigned char lp_accel_mode;
+    /* 1 if interrupts are only triggered on motion events. */
+    unsigned char int_motion_only;
+    struct motion_int_cache_s cache;
+    /* 1 for active low interrupts. */
+    unsigned char active_low_int;
+    /* 1 for latched interrupts. */
+    unsigned char latched_int;
+    /* 1 if DMP is enabled. */
+    unsigned char dmp_on;
+    /* Ensures that DMP will only be loaded once. */
+    unsigned char dmp_loaded;
+    /* Sampling rate used when DMP is enabled. */
+    unsigned short dmp_sample_rate;
+#ifdef AK89xx_SECONDARY
+    /* Compass sample rate. */
+    unsigned short compass_sample_rate;
+    unsigned char compass_addr;
+    short mag_sens_adj[3];
+#endif
+};
+
+/* Information for self-test. */
+struct test_s {
+    unsigned long gyro_sens;
+    unsigned long accel_sens;
+    unsigned char reg_rate_div;
+    unsigned char reg_lpf;
+    unsigned char reg_gyro_fsr;
+    unsigned char reg_accel_fsr;
+    unsigned short wait_ms;
+    unsigned char packet_thresh;
+    float min_dps;
+    float max_dps;
+    float max_gyro_var;
+    float min_g;
+    float max_g;
+    float max_accel_var;
+#ifdef MPU6500
+    float max_g_offset;
+    unsigned short sample_wait_ms;
+#endif
+};
+
+/* Gyro driver state variables. */
+struct gyro_state_s {
+    const struct gyro_reg_s *reg;
+    const struct hw_s *hw;
+    struct chip_cfg_s chip_cfg;
+    const struct test_s *test;
+};
+
+/* Filter configurations. */
+enum lpf_e {
+    INV_FILTER_256HZ_NOLPF2 = 0,
+    INV_FILTER_188HZ,
+    INV_FILTER_98HZ,
+    INV_FILTER_42HZ,
+    INV_FILTER_20HZ,
+    INV_FILTER_10HZ,
+    INV_FILTER_5HZ,
+    INV_FILTER_2100HZ_NOLPF,
+    NUM_FILTER
+};
+
+/* Full scale ranges. */
+enum gyro_fsr_e {
+    INV_FSR_250DPS = 0,
+    INV_FSR_500DPS,
+    INV_FSR_1000DPS,
+    INV_FSR_2000DPS,
+    NUM_GYRO_FSR
+};
+
+/* Full scale ranges. */
+enum accel_fsr_e {
+    INV_FSR_2G = 0,
+    INV_FSR_4G,
+    INV_FSR_8G,
+    INV_FSR_16G,
+    NUM_ACCEL_FSR
+};
+
+/* Clock sources. */
+enum clock_sel_e {
+    INV_CLK_INTERNAL = 0,
+    INV_CLK_PLL,
+    NUM_CLK
+};
+
+/* Low-power accel wakeup rates. */
+enum lp_accel_rate_e {
+#if defined MPU6050
+    INV_LPA_1_25HZ,
+    INV_LPA_5HZ,
+    INV_LPA_20HZ,
+    INV_LPA_40HZ
+#elif defined MPU6500
+    INV_LPA_0_3125HZ,
+    INV_LPA_0_625HZ,
+    INV_LPA_1_25HZ,
+    INV_LPA_2_5HZ,
+    INV_LPA_5HZ,
+    INV_LPA_10HZ,
+    INV_LPA_20HZ,
+    INV_LPA_40HZ,
+    INV_LPA_80HZ,
+    INV_LPA_160HZ,
+    INV_LPA_320HZ,
+    INV_LPA_640HZ
+#endif
+};
+
+#define BIT_I2C_MST_VDDIO   (0x80)
+#define BIT_FIFO_EN         (0x40)
+#define BIT_DMP_EN          (0x80)
+#define BIT_FIFO_RST        (0x04)
+#define BIT_DMP_RST         (0x08)
+#define BIT_FIFO_OVERFLOW   (0x10)
+#define BIT_DATA_RDY_EN     (0x01)
+#define BIT_DMP_INT_EN      (0x02)
+#define BIT_MOT_INT_EN      (0x40)
+#define BITS_FSR            (0x18)
+#define BITS_LPF            (0x07)
+#define BITS_HPF            (0x07)
+#define BITS_CLK            (0x07)
+#define BIT_FIFO_SIZE_1024  (0x40)
+#define BIT_FIFO_SIZE_2048  (0x80)
+#define BIT_FIFO_SIZE_4096  (0xC0)
+#define BIT_RESET           (0x80)
+#define BIT_SLEEP           (0x40)
+#define BIT_S0_DELAY_EN     (0x01)
+#define BIT_S2_DELAY_EN     (0x04)
+#define BITS_SLAVE_LENGTH   (0x0F)
+#define BIT_SLAVE_BYTE_SW   (0x40)
+#define BIT_SLAVE_GROUP     (0x10)
+#define BIT_SLAVE_EN        (0x80)
+#define BIT_I2C_READ        (0x80)
+#define BITS_I2C_MASTER_DLY (0x1F)
+#define BIT_AUX_IF_EN       (0x20)
+#define BIT_ACTL            (0x80)
+#define BIT_LATCH_EN        (0x20)
+#define BIT_ANY_RD_CLR      (0x10)
+#define BIT_BYPASS_EN       (0x02)
+#define BITS_WOM_EN         (0xC0)
+#define BIT_LPA_CYCLE       (0x20)
+#define BIT_STBY_XA         (0x20)
+#define BIT_STBY_YA         (0x10)
+#define BIT_STBY_ZA         (0x08)
+#define BIT_STBY_XG         (0x04)
+#define BIT_STBY_YG         (0x02)
+#define BIT_STBY_ZG         (0x01)
+#define BIT_STBY_XYZA       (BIT_STBY_XA | BIT_STBY_YA | BIT_STBY_ZA)
+#define BIT_STBY_XYZG       (BIT_STBY_XG | BIT_STBY_YG | BIT_STBY_ZG)
+
+#if defined AK8975_SECONDARY
+#define SUPPORTS_AK89xx_HIGH_SENS   (0x00)
+#define AK89xx_FSR                  (9830)
+#elif defined AK8963_SECONDARY
+#define SUPPORTS_AK89xx_HIGH_SENS   (0x10)
+#define AK89xx_FSR                  (4915)
+#endif
+
+#ifdef AK89xx_SECONDARY
+#define AKM_REG_WHOAMI      (0x00)
+
+#define AKM_REG_ST1         (0x02)
+#define AKM_REG_HXL         (0x03)
+#define AKM_REG_ST2         (0x09)
+
+#define AKM_REG_CNTL        (0x0A)
+#define AKM_REG_ASTC        (0x0C)
+#define AKM_REG_ASAX        (0x10)
+#define AKM_REG_ASAY        (0x11)
+#define AKM_REG_ASAZ        (0x12)
+
+#define AKM_DATA_READY      (0x01)
+#define AKM_DATA_OVERRUN    (0x02)
+#define AKM_OVERFLOW        (0x80)
+#define AKM_DATA_ERROR      (0x40)
+
+#define AKM_BIT_SELF_TEST   (0x40)
+
+#define AKM_POWER_DOWN          (0x00 | SUPPORTS_AK89xx_HIGH_SENS)
+#define AKM_SINGLE_MEASUREMENT  (0x01 | SUPPORTS_AK89xx_HIGH_SENS)
+#define AKM_FUSE_ROM_ACCESS     (0x0F | SUPPORTS_AK89xx_HIGH_SENS)
+#define AKM_MODE_SELF_TEST      (0x08 | SUPPORTS_AK89xx_HIGH_SENS)
+
+#define AKM_WHOAMI      (0x48)
+#endif
+
+#if defined MPU6050
+const struct gyro_reg_s reg = {
+    .who_am_i       = 0x75,
+    .rate_div       = 0x19,
+    .lpf            = 0x1A,
+    .prod_id        = 0x0C,
+    .user_ctrl      = 0x6A,
+    .fifo_en        = 0x23,
+    .gyro_cfg       = 0x1B,
+    .accel_cfg      = 0x1C,
+    .motion_thr     = 0x1F,
+    .motion_dur     = 0x20,
+    .fifo_count_h   = 0x72,
+    .fifo_r_w       = 0x74,
+    .raw_gyro       = 0x43,
+    .raw_accel      = 0x3B,
+    .temp           = 0x41,
+    .int_enable     = 0x38,
+    .dmp_int_status = 0x39,
+    .int_status     = 0x3A,
+    .pwr_mgmt_1     = 0x6B,
+    .pwr_mgmt_2     = 0x6C,
+    .int_pin_cfg    = 0x37,
+    .mem_r_w        = 0x6F,
+    .accel_offs     = 0x06,
+    .i2c_mst        = 0x24,
+    .bank_sel       = 0x6D,
+    .mem_start_addr = 0x6E,
+    .prgm_start_h   = 0x70
+#ifdef AK89xx_SECONDARY
+    ,.raw_compass   = 0x49,
+    .yg_offs_tc     = 0x01,
+    .s0_addr        = 0x25,
+    .s0_reg         = 0x26,
+    .s0_ctrl        = 0x27,
+    .s1_addr        = 0x28,
+    .s1_reg         = 0x29,
+    .s1_ctrl        = 0x2A,
+    .s4_ctrl        = 0x34,
+    .s0_do          = 0x63,
+    .s1_do          = 0x64,
+    .i2c_delay_ctrl = 0x67
+#endif
+};
+const struct hw_s hw = {
+    .addr           = 0x68,
+    .max_fifo       = 1024,
+    .num_reg        = 118,
+    .temp_sens      = 340,
+    .temp_offset    = -521,
+    .bank_size      = 256
+#if defined AK89xx_SECONDARY
+    ,.compass_fsr    = AK89xx_FSR
+#endif
+};
+
+const struct test_s test = {
+    .gyro_sens      = 32768/250,
+    .accel_sens     = 32768/16,
+    .reg_rate_div   = 0,    /* 1kHz. */
+    .reg_lpf        = 1,    /* 188Hz. */
+    .reg_gyro_fsr   = 0,    /* 250dps. */
+    .reg_accel_fsr  = 0x18, /* 16g. */
+    .wait_ms        = 50,
+    .packet_thresh  = 5,    /* 5% */
+    .min_dps        = 10.f,
+    .max_dps        = 105.f,
+    .max_gyro_var   = 0.14f,
+    .min_g          = 0.3f,
+    .max_g          = 0.95f,
+    .max_accel_var  = 0.14f
+};
+
+static struct gyro_state_s st = {
+    .reg = &reg,
+    .hw = &hw,
+    .test = &test
+};
+#elif defined MPU6500
+const struct gyro_reg_s reg = {
+    .who_am_i       = 0x75,
+    .rate_div       = 0x19,
+    .lpf            = 0x1A,
+    .prod_id        = 0x0C,
+    .user_ctrl      = 0x6A,
+    .fifo_en        = 0x23,
+    .gyro_cfg       = 0x1B,
+    .accel_cfg      = 0x1C,
+    .accel_cfg2     = 0x1D,
+    .lp_accel_odr   = 0x1E,
+    .motion_thr     = 0x1F,
+    .motion_dur     = 0x20,
+    .fifo_count_h   = 0x72,
+    .fifo_r_w       = 0x74,
+    .raw_gyro       = 0x43,
+    .raw_accel      = 0x3B,
+    .temp           = 0x41,
+    .int_enable     = 0x38,
+    .dmp_int_status = 0x39,
+    .int_status     = 0x3A,
+    .accel_intel    = 0x69,
+    .pwr_mgmt_1     = 0x6B,
+    .pwr_mgmt_2     = 0x6C,
+    .int_pin_cfg    = 0x37,
+    .mem_r_w        = 0x6F,
+    .accel_offs     = 0x77,
+    .i2c_mst        = 0x24,
+    .bank_sel       = 0x6D,
+    .mem_start_addr = 0x6E,
+    .prgm_start_h   = 0x70
+#ifdef AK89xx_SECONDARY
+    ,.raw_compass   = 0x49,
+    .s0_addr        = 0x25,
+    .s0_reg         = 0x26,
+    .s0_ctrl        = 0x27,
+    .s1_addr        = 0x28,
+    .s1_reg         = 0x29,
+    .s1_ctrl        = 0x2A,
+    .s4_ctrl        = 0x34,
+    .s0_do          = 0x63,
+    .s1_do          = 0x64,
+    .i2c_delay_ctrl = 0x67
+#endif
+};
+const struct hw_s hw = {
+    .addr           = 0x68,
+    .max_fifo       = 1024,
+    .num_reg        = 128,
+    .temp_sens      = 321,
+    .temp_offset    = 0,
+    .bank_size      = 256
+#if defined AK89xx_SECONDARY
+    ,.compass_fsr    = AK89xx_FSR
+#endif
+};
+
+const struct test_s test = {
+    .gyro_sens      = 32768/250,
+    .accel_sens     = 32768/2,  //FSR = +-2G = 16384 LSB/G
+    .reg_rate_div   = 0,    /* 1kHz. */
+    .reg_lpf        = 2,    /* 92Hz low pass filter*/
+    .reg_gyro_fsr   = 0,    /* 250dps. */
+    .reg_accel_fsr  = 0x0,  /* Accel FSR setting = 2g. */
+    .wait_ms        = 200,   //200ms stabilization time
+    .packet_thresh  = 200,    /* 200 samples */
+    .min_dps        = 20.f,  //20 dps for Gyro Criteria C
+    .max_dps        = 60.f, //Must exceed 60 dps threshold for Gyro Criteria B
+    .max_gyro_var   = .5f, //Must exceed +50% variation for Gyro Criteria A
+    .min_g          = .225f, //Accel must exceed Min 225 mg for Criteria B
+    .max_g          = .675f, //Accel cannot exceed Max 675 mg for Criteria B
+    .max_accel_var  = .5f,  //Accel must be within 50% variation for Criteria A
+    .max_g_offset   = .5f,   //500 mg for Accel Criteria C
+    .sample_wait_ms = 10    //10ms sample time wait
+};
+
+static struct gyro_state_s st = {
+    .reg = &reg,
+    .hw = &hw,
+    .test = &test
+};
+#endif
+
+#define MAX_PACKET_LENGTH (12)
+#ifdef MPU6500
+#define HWST_MAX_PACKET_LENGTH (512)
+#endif
+
+#ifdef AK89xx_SECONDARY
+static int setup_compass(void);
+#define MAX_COMPASS_SAMPLE_RATE (100)
+#endif
+
+/**
+ *  @brief      Enable/disable data ready interrupt.
+ *  If the DMP is on, the DMP interrupt is enabled. Otherwise, the data ready
+ *  interrupt is used.
+ *  @param[in]  enable      1 to enable interrupt.
+ *  @return     0 if successful.
+ */
+static int set_int_enable(unsigned char enable)
+{
+    unsigned char tmp;
+
+    if (st.chip_cfg.dmp_on) {
+        if (enable)
+            tmp = BIT_DMP_INT_EN;
+        else
+            tmp = 0x00;
+        if (i2c_write(st.hw->addr, st.reg->int_enable, 1, &tmp))
+            return -1;
+        st.chip_cfg.int_enable = tmp;
+    } else {
+        if (!st.chip_cfg.sensors)
+            return -1;
+        if (enable && st.chip_cfg.int_enable)
+            return 0;
+        if (enable)
+            tmp = BIT_DATA_RDY_EN;
+        else
+            tmp = 0x00;
+        if (i2c_write(st.hw->addr, st.reg->int_enable, 1, &tmp))
+            return -1;
+        st.chip_cfg.int_enable = tmp;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Register dump for testing.
+ *  @return     0 if successful.
+ */
+int mpu_reg_dump(void)
+{
+    unsigned char ii;
+    unsigned char data;
+
+    for (ii = 0; ii < st.hw->num_reg; ii++) {
+        if (ii == st.reg->fifo_r_w || ii == st.reg->mem_r_w)
+            continue;
+        if (i2c_read(st.hw->addr, ii, 1, &data))
+            return -1;
+        log_i("%#5x: %#5x\r\n", ii, data);
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Read from a single register.
+ *  NOTE: The memory and FIFO read/write registers cannot be accessed.
+ *  @param[in]  reg     Register address.
+ *  @param[out] data    Register data.
+ *  @return     0 if successful.
+ */
+int mpu_read_reg(unsigned char reg, unsigned char *data)
+{
+    if (reg == st.reg->fifo_r_w || reg == st.reg->mem_r_w)
+        return -1;
+    if (reg >= st.hw->num_reg)
+        return -1;
+    return i2c_read(st.hw->addr, reg, 1, data);
+}
+
+/**
+ *  @brief      Initialize hardware.
+ *  Initial configuration:\n
+ *  Gyro FSR: +/- 2000DPS\n
+ *  Accel FSR +/- 2G\n
+ *  DLPF: 42Hz\n
+ *  FIFO rate: 50Hz\n
+ *  Clock source: Gyro PLL\n
+ *  FIFO: Disabled.\n
+ *  Data ready interrupt: Disabled, active low, unlatched.
+ *  @param[in]  int_param   Platform-specific parameters to interrupt API.
+ *  @return     0 if successful.
+ */
+int mpu_init(struct int_param_s *int_param)
+{
+    unsigned char data[6];
+
+    /* Reset device. */
+    data[0] = BIT_RESET;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, data))
+        return -1;
+    delay_ms(100);
+
+    /* Wake up chip. */
+    data[0] = 0x00;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, data))
+        return -1;
+
+   st.chip_cfg.accel_half = 0;
+
+#ifdef MPU6500
+    /* MPU6500 shares 4kB of memory between the DMP and the FIFO. Since the
+     * first 3kB are needed by the DMP, we'll use the last 1kB for the FIFO.
+     */
+    data[0] = BIT_FIFO_SIZE_1024 | 0x8;
+    if (i2c_write(st.hw->addr, st.reg->accel_cfg2, 1, data))
+        return -1;
+#endif
+
+    /* Set to invalid values to ensure no I2C writes are skipped. */
+    st.chip_cfg.sensors = 0xFF;
+    st.chip_cfg.gyro_fsr = 0xFF;
+    st.chip_cfg.accel_fsr = 0xFF;
+    st.chip_cfg.lpf = 0xFF;
+    st.chip_cfg.sample_rate = 0xFFFF;
+    st.chip_cfg.fifo_enable = 0xFF;
+    st.chip_cfg.bypass_mode = 0xFF;
+#ifdef AK89xx_SECONDARY
+    st.chip_cfg.compass_sample_rate = 0xFFFF;
+#endif
+    /* mpu_set_sensors always preserves this setting. */
+    st.chip_cfg.clk_src = INV_CLK_PLL;
+    /* Handled in next call to mpu_set_bypass. */
+    st.chip_cfg.active_low_int = 1;
+    st.chip_cfg.latched_int = 0;
+    st.chip_cfg.int_motion_only = 0;
+    st.chip_cfg.lp_accel_mode = 0;
+    memset(&st.chip_cfg.cache, 0, sizeof(st.chip_cfg.cache));
+    st.chip_cfg.dmp_on = 0;
+    st.chip_cfg.dmp_loaded = 0;
+    st.chip_cfg.dmp_sample_rate = 0;
+
+    if (mpu_set_gyro_fsr(2000))
+        return -1;
+    if (mpu_set_accel_fsr(2))
+        return -1;
+    if (mpu_set_lpf(42))
+        return -1;
+    if (mpu_set_sample_rate(50))
+        return -1;
+    if (mpu_configure_fifo(0))
+        return -1;
+
+#ifndef EMPL_TARGET_STM32F4    
+    if (int_param)
+        reg_int_cb(int_param);
+#endif
+
+#ifdef AK89xx_SECONDARY
+    setup_compass();
+    if (mpu_set_compass_sample_rate(10))
+        return -1;
+#else
+    /* Already disabled by setup_compass. */
+    if (mpu_set_bypass(0))
+        return -1;
+#endif
+
+    mpu_set_sensors(0);
+    return 0;
+}
+
+/**
+ *  @brief      Enter low-power accel-only mode.
+ *  In low-power accel mode, the chip goes to sleep and only wakes up to sample
+ *  the accelerometer at one of the following frequencies:
+ *  \n MPU6050: 1.25Hz, 5Hz, 20Hz, 40Hz
+ *  \n MPU6500: 1.25Hz, 2.5Hz, 5Hz, 10Hz, 20Hz, 40Hz, 80Hz, 160Hz, 320Hz, 640Hz
+ *  \n If the requested rate is not one listed above, the device will be set to
+ *  the next highest rate. Requesting a rate above the maximum supported
+ *  frequency will result in an error.
+ *  \n To select a fractional wake-up frequency, round down the value passed to
+ *  @e rate.
+ *  @param[in]  rate        Minimum sampling rate, or zero to disable LP
+ *                          accel mode.
+ *  @return     0 if successful.
+ */
+int mpu_lp_accel_mode(unsigned short rate)
+{
+    unsigned char tmp[2];
+
+    if (rate > 40)
+        return -1;
+
+    if (!rate) {
+        mpu_set_int_latched(0);
+        tmp[0] = 0;
+        tmp[1] = BIT_STBY_XYZG;
+        if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 2, tmp))
+            return -1;
+        st.chip_cfg.lp_accel_mode = 0;
+        return 0;
+    }
+    /* For LP accel, we automatically configure the hardware to produce latched
+     * interrupts. In LP accel mode, the hardware cycles into sleep mode before
+     * it gets a chance to deassert the interrupt pin; therefore, we shift this
+     * responsibility over to the MCU.
+     *
+     * Any register read will clear the interrupt.
+     */
+    mpu_set_int_latched(1);
+#if defined MPU6050
+    tmp[0] = BIT_LPA_CYCLE;
+    if (rate == 1) {
+        tmp[1] = INV_LPA_1_25HZ;
+        mpu_set_lpf(5);
+    } else if (rate <= 5) {
+        tmp[1] = INV_LPA_5HZ;
+        mpu_set_lpf(5);
+    } else if (rate <= 20) {
+        tmp[1] = INV_LPA_20HZ;
+        mpu_set_lpf(10);
+    } else {
+        tmp[1] = INV_LPA_40HZ;
+        mpu_set_lpf(20);
+    }
+    tmp[1] = (tmp[1] << 6) | BIT_STBY_XYZG;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 2, tmp))
+        return -1;
+#elif defined MPU6500
+    /* Set wake frequency. */
+    if (rate == 1)
+        tmp[0] = INV_LPA_1_25HZ;
+    else if (rate == 2)
+        tmp[0] = INV_LPA_2_5HZ;
+    else if (rate <= 5)
+        tmp[0] = INV_LPA_5HZ;
+    else if (rate <= 10)
+        tmp[0] = INV_LPA_10HZ;
+    else if (rate <= 20)
+        tmp[0] = INV_LPA_20HZ;
+    else if (rate <= 40)
+        tmp[0] = INV_LPA_40HZ;
+    else if (rate <= 80)
+        tmp[0] = INV_LPA_80HZ;
+    else if (rate <= 160)
+        tmp[0] = INV_LPA_160HZ;
+    else if (rate <= 320)
+        tmp[0] = INV_LPA_320HZ;
+    else
+        tmp[0] = INV_LPA_640HZ;
+    if (i2c_write(st.hw->addr, st.reg->lp_accel_odr, 1, tmp))
+        return -1;
+    tmp[0] = BIT_LPA_CYCLE;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, tmp))
+        return -1;
+#endif
+    st.chip_cfg.sensors = INV_XYZ_ACCEL;
+    st.chip_cfg.clk_src = 0;
+    st.chip_cfg.lp_accel_mode = 1;
+    mpu_configure_fifo(0);
+
+    return 0;
+}
+
+/**
+ *  @brief      Read raw gyro data directly from the registers.
+ *  @param[out] data        Raw data in hardware units.
+ *  @param[out] timestamp   Timestamp in milliseconds. Null if not needed.
+ *  @return     0 if successful.
+ */
+int mpu_get_gyro_reg(short *data, unsigned long *timestamp)
+{
+    unsigned char tmp[6];
+
+    if (!(st.chip_cfg.sensors & INV_XYZ_GYRO))
+        return -1;
+
+    if (i2c_read(st.hw->addr, st.reg->raw_gyro, 6, tmp))
+        return -1;
+    data[0] = (tmp[0] << 8) | tmp[1];
+    data[1] = (tmp[2] << 8) | tmp[3];
+    data[2] = (tmp[4] << 8) | tmp[5];
+    if (timestamp)
+        get_ms(timestamp);
+    return 0;
+}
+
+/**
+ *  @brief      Read raw accel data directly from the registers.
+ *  @param[out] data        Raw data in hardware units.
+ *  @param[out] timestamp   Timestamp in milliseconds. Null if not needed.
+ *  @return     0 if successful.
+ */
+int mpu_get_accel_reg(short *data, unsigned long *timestamp)
+{
+    unsigned char tmp[6];
+
+    if (!(st.chip_cfg.sensors & INV_XYZ_ACCEL))
+        return -1;
+
+    if (i2c_read(st.hw->addr, st.reg->raw_accel, 6, tmp))
+        return -1;
+    data[0] = (tmp[0] << 8) | tmp[1];
+    data[1] = (tmp[2] << 8) | tmp[3];
+    data[2] = (tmp[4] << 8) | tmp[5];
+    if (timestamp)
+        get_ms(timestamp);
+    return 0;
+}
+
+/**
+ *  @brief      Read temperature data directly from the registers.
+ *  @param[out] data        Data in q16 format.
+ *  @param[out] timestamp   Timestamp in milliseconds. Null if not needed.
+ *  @return     0 if successful.
+ */
+int mpu_get_temperature(long *data, unsigned long *timestamp)
+{
+    unsigned char tmp[2];
+    short raw;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    if (i2c_read(st.hw->addr, st.reg->temp, 2, tmp))
+        return -1;
+    raw = (tmp[0] << 8) | tmp[1];
+    if (timestamp)
+        get_ms(timestamp);
+
+    data[0] = (long)((35 + ((raw - (float)st.hw->temp_offset) / st.hw->temp_sens)) * 65536L);
+    return 0;
+}
+
+/**
+ *  @brief      Read biases to the accel bias 6500 registers.
+ *  This function reads from the MPU6500 accel offset cancellations registers.
+ *  The format are G in +-8G format. The register is initialized with OTP 
+ *  factory trim values.
+ *  @param[in]  accel_bias  returned structure with the accel bias
+ *  @return     0 if successful.
+ */
+int mpu_read_6500_accel_bias(long *accel_bias) {
+	unsigned char data[6];
+	if (i2c_read(st.hw->addr, 0x77, 2, &data[0]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x7A, 2, &data[2]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x7D, 2, &data[4]))
+		return -1;
+	accel_bias[0] = ((long)data[0]<<8) | data[1];
+	accel_bias[1] = ((long)data[2]<<8) | data[3];
+	accel_bias[2] = ((long)data[4]<<8) | data[5];
+	return 0;
+}
+
+/**
+ *  @brief      Read biases to the accel bias 6050 registers.
+ *  This function reads from the MPU6050 accel offset cancellations registers.
+ *  The format are G in +-8G format. The register is initialized with OTP 
+ *  factory trim values.
+ *  @param[in]  accel_bias  returned structure with the accel bias
+ *  @return     0 if successful.
+ */
+int mpu_read_6050_accel_bias(long *accel_bias) {
+	unsigned char data[6];
+	if (i2c_read(st.hw->addr, 0x06, 2, &data[0]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x08, 2, &data[2]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x0A, 2, &data[4]))
+		return -1;
+	accel_bias[0] = ((long)data[0]<<8) | data[1];
+	accel_bias[1] = ((long)data[2]<<8) | data[3];
+	accel_bias[2] = ((long)data[4]<<8) | data[5];
+	return 0;
+}
+
+int mpu_read_6500_gyro_bias(long *gyro_bias) {
+	unsigned char data[6];
+	if (i2c_read(st.hw->addr, 0x13, 2, &data[0]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x15, 2, &data[2]))
+		return -1;
+	if (i2c_read(st.hw->addr, 0x17, 2, &data[4]))
+		return -1;
+	gyro_bias[0] = ((long)data[0]<<8) | data[1];
+	gyro_bias[1] = ((long)data[2]<<8) | data[3];
+	gyro_bias[2] = ((long)data[4]<<8) | data[5];
+	return 0;
+}
+
+/**
+ *  @brief      Push biases to the gyro bias 6500/6050 registers.
+ *  This function expects biases relative to the current sensor output, and
+ *  these biases will be added to the factory-supplied values. Bias inputs are LSB
+ *  in +-1000dps format.
+ *  @param[in]  gyro_bias  New biases.
+ *  @return     0 if successful.
+ */
+int mpu_set_gyro_bias_reg(long *gyro_bias)
+{
+    unsigned char data[6] = {0, 0, 0, 0, 0, 0};
+    int i=0;
+    for(i=0;i<3;i++) {
+    	gyro_bias[i]= (-gyro_bias[i]);
+    }
+    data[0] = (gyro_bias[0] >> 8) & 0xff;
+    data[1] = (gyro_bias[0]) & 0xff;
+    data[2] = (gyro_bias[1] >> 8) & 0xff;
+    data[3] = (gyro_bias[1]) & 0xff;
+    data[4] = (gyro_bias[2] >> 8) & 0xff;
+    data[5] = (gyro_bias[2]) & 0xff;
+    if (i2c_write(st.hw->addr, 0x13, 2, &data[0]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x15, 2, &data[2]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x17, 2, &data[4]))
+        return -1;
+    return 0;
+}
+
+/**
+ *  @brief      Push biases to the accel bias 6050 registers.
+ *  This function expects biases relative to the current sensor output, and
+ *  these biases will be added to the factory-supplied values. Bias inputs are LSB
+ *  in +-8G format.
+ *  @param[in]  accel_bias  New biases.
+ *  @return     0 if successful.
+ */
+int mpu_set_accel_bias_6050_reg(const long *accel_bias) {
+    unsigned char data[6] = {0, 0, 0, 0, 0, 0};
+    long accel_reg_bias[3] = {0, 0, 0};
+
+    if(mpu_read_6050_accel_bias(accel_reg_bias))
+        return -1;
+
+    accel_reg_bias[0] -= (accel_bias[0] & ~1);
+    accel_reg_bias[1] -= (accel_bias[1] & ~1);
+    accel_reg_bias[2] -= (accel_bias[2] & ~1);
+
+    data[0] = (accel_reg_bias[0] >> 8) & 0xff;
+    data[1] = (accel_reg_bias[0]) & 0xff;
+    data[2] = (accel_reg_bias[1] >> 8) & 0xff;
+    data[3] = (accel_reg_bias[1]) & 0xff;
+    data[4] = (accel_reg_bias[2] >> 8) & 0xff;
+    data[5] = (accel_reg_bias[2]) & 0xff;
+
+    if (i2c_write(st.hw->addr, 0x06, 2, &data[0]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x08, 2, &data[2]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x0A, 2, &data[4]))
+        return -1;
+
+    return 0;
+}
+
+
+
+/**
+ *  @brief      Push biases to the accel bias 6500 registers.
+ *  This function expects biases relative to the current sensor output, and
+ *  these biases will be added to the factory-supplied values. Bias inputs are LSB
+ *  in +-8G format.
+ *  @param[in]  accel_bias  New biases.
+ *  @return     0 if successful.
+ */
+int mpu_set_accel_bias_6500_reg(const long *accel_bias) {
+    unsigned char data[6] = {0, 0, 0, 0, 0, 0};
+    long accel_reg_bias[3] = {0, 0, 0};
+
+    if(mpu_read_6500_accel_bias(accel_reg_bias))
+        return -1;
+
+    // Preserve bit 0 of factory value (for temperature compensation)
+    accel_reg_bias[0] -= (accel_bias[0] & ~1);
+    accel_reg_bias[1] -= (accel_bias[1] & ~1);
+    accel_reg_bias[2] -= (accel_bias[2] & ~1);
+
+    data[0] = (accel_reg_bias[0] >> 8) & 0xff;
+    data[1] = (accel_reg_bias[0]) & 0xff;
+    data[2] = (accel_reg_bias[1] >> 8) & 0xff;
+    data[3] = (accel_reg_bias[1]) & 0xff;
+    data[4] = (accel_reg_bias[2] >> 8) & 0xff;
+    data[5] = (accel_reg_bias[2]) & 0xff;
+
+    if (i2c_write(st.hw->addr, 0x77, 2, &data[0]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x7A, 2, &data[2]))
+        return -1;
+    if (i2c_write(st.hw->addr, 0x7D, 2, &data[4]))
+        return -1;
+
+    return 0;
+}
+
+
+/**
+ *  @brief  Reset FIFO read/write pointers.
+ *  @return 0 if successful.
+ */
+int mpu_reset_fifo(void)
+{
+    unsigned char data;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    data = 0;
+    if (i2c_write(st.hw->addr, st.reg->int_enable, 1, &data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, &data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &data))
+        return -1;
+
+    if (st.chip_cfg.dmp_on) {
+        data = BIT_FIFO_RST | BIT_DMP_RST;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &data))
+            return -1;
+        delay_ms(50);
+        data = BIT_DMP_EN | BIT_FIFO_EN;
+        if (st.chip_cfg.sensors & INV_XYZ_COMPASS)
+            data |= BIT_AUX_IF_EN;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &data))
+            return -1;
+        if (st.chip_cfg.int_enable)
+            data = BIT_DMP_INT_EN;
+        else
+            data = 0;
+        if (i2c_write(st.hw->addr, st.reg->int_enable, 1, &data))
+            return -1;
+        data = 0;
+        if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, &data))
+            return -1;
+    } else {
+        data = BIT_FIFO_RST;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &data))
+            return -1;
+        if (st.chip_cfg.bypass_mode || !(st.chip_cfg.sensors & INV_XYZ_COMPASS))
+            data = BIT_FIFO_EN;
+        else
+            data = BIT_FIFO_EN | BIT_AUX_IF_EN;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &data))
+            return -1;
+        delay_ms(50);
+        if (st.chip_cfg.int_enable)
+            data = BIT_DATA_RDY_EN;
+        else
+            data = 0;
+        if (i2c_write(st.hw->addr, st.reg->int_enable, 1, &data))
+            return -1;
+        if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, &st.chip_cfg.fifo_enable))
+            return -1;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Get the gyro full-scale range.
+ *  @param[out] fsr Current full-scale range.
+ *  @return     0 if successful.
+ */
+int mpu_get_gyro_fsr(unsigned short *fsr)
+{
+    switch (st.chip_cfg.gyro_fsr) {
+    case INV_FSR_250DPS:
+        fsr[0] = 250;
+        break;
+    case INV_FSR_500DPS:
+        fsr[0] = 500;
+        break;
+    case INV_FSR_1000DPS:
+        fsr[0] = 1000;
+        break;
+    case INV_FSR_2000DPS:
+        fsr[0] = 2000;
+        break;
+    default:
+        fsr[0] = 0;
+        break;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Set the gyro full-scale range.
+ *  @param[in]  fsr Desired full-scale range.
+ *  @return     0 if successful.
+ */
+int mpu_set_gyro_fsr(unsigned short fsr)
+{
+    unsigned char data;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    switch (fsr) {
+    case 250:
+        data = INV_FSR_250DPS << 3;
+        break;
+    case 500:
+        data = INV_FSR_500DPS << 3;
+        break;
+    case 1000:
+        data = INV_FSR_1000DPS << 3;
+        break;
+    case 2000:
+        data = INV_FSR_2000DPS << 3;
+        break;
+    default:
+        return -1;
+    }
+
+    if (st.chip_cfg.gyro_fsr == (data >> 3))
+        return 0;
+    if (i2c_write(st.hw->addr, st.reg->gyro_cfg, 1, &data))
+        return -1;
+    st.chip_cfg.gyro_fsr = data >> 3;
+    return 0;
+}
+
+/**
+ *  @brief      Get the accel full-scale range.
+ *  @param[out] fsr Current full-scale range.
+ *  @return     0 if successful.
+ */
+int mpu_get_accel_fsr(unsigned char *fsr)
+{
+    switch (st.chip_cfg.accel_fsr) {
+    case INV_FSR_2G:
+        fsr[0] = 2;
+        break;
+    case INV_FSR_4G:
+        fsr[0] = 4;
+        break;
+    case INV_FSR_8G:
+        fsr[0] = 8;
+        break;
+    case INV_FSR_16G:
+        fsr[0] = 16;
+        break;
+    default:
+        return -1;
+    }
+    if (st.chip_cfg.accel_half)
+        fsr[0] <<= 1;
+    return 0;
+}
+
+/**
+ *  @brief      Set the accel full-scale range.
+ *  @param[in]  fsr Desired full-scale range.
+ *  @return     0 if successful.
+ */
+int mpu_set_accel_fsr(unsigned char fsr)
+{
+    unsigned char data;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    switch (fsr) {
+    case 2:
+        data = INV_FSR_2G << 3;
+        break;
+    case 4:
+        data = INV_FSR_4G << 3;
+        break;
+    case 8:
+        data = INV_FSR_8G << 3;
+        break;
+    case 16:
+        data = INV_FSR_16G << 3;
+        break;
+    default:
+        return -1;
+    }
+
+    if (st.chip_cfg.accel_fsr == (data >> 3))
+        return 0;
+    if (i2c_write(st.hw->addr, st.reg->accel_cfg, 1, &data))
+        return -1;
+    st.chip_cfg.accel_fsr = data >> 3;
+    return 0;
+}
+
+/**
+ *  @brief      Get the current DLPF setting.
+ *  @param[out] lpf Current LPF setting.
+ *  0 if successful.
+ */
+int mpu_get_lpf(unsigned short *lpf)
+{
+    switch (st.chip_cfg.lpf) {
+    case INV_FILTER_188HZ:
+        lpf[0] = 188;
+        break;
+    case INV_FILTER_98HZ:
+        lpf[0] = 98;
+        break;
+    case INV_FILTER_42HZ:
+        lpf[0] = 42;
+        break;
+    case INV_FILTER_20HZ:
+        lpf[0] = 20;
+        break;
+    case INV_FILTER_10HZ:
+        lpf[0] = 10;
+        break;
+    case INV_FILTER_5HZ:
+        lpf[0] = 5;
+        break;
+    case INV_FILTER_256HZ_NOLPF2:
+    case INV_FILTER_2100HZ_NOLPF:
+    default:
+        lpf[0] = 0;
+        break;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Set digital low pass filter.
+ *  The following LPF settings are supported: 188, 98, 42, 20, 10, 5.
+ *  @param[in]  lpf Desired LPF setting.
+ *  @return     0 if successful.
+ */
+int mpu_set_lpf(unsigned short lpf)
+{
+    unsigned char data;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    if (lpf >= 188)
+        data = INV_FILTER_188HZ;
+    else if (lpf >= 98)
+        data = INV_FILTER_98HZ;
+    else if (lpf >= 42)
+        data = INV_FILTER_42HZ;
+    else if (lpf >= 20)
+        data = INV_FILTER_20HZ;
+    else if (lpf >= 10)
+        data = INV_FILTER_10HZ;
+    else
+        data = INV_FILTER_5HZ;
+
+    if (st.chip_cfg.lpf == data)
+        return 0;
+    if (i2c_write(st.hw->addr, st.reg->lpf, 1, &data))
+        return -1;
+    st.chip_cfg.lpf = data;
+    return 0;
+}
+
+/**
+ *  @brief      Get sampling rate.
+ *  @param[out] rate    Current sampling rate (Hz).
+ *  @return     0 if successful.
+ */
+int mpu_get_sample_rate(unsigned short *rate)
+{
+    if (st.chip_cfg.dmp_on)
+        return -1;
+    else
+        rate[0] = st.chip_cfg.sample_rate;
+    return 0;
+}
+
+/**
+ *  @brief      Set sampling rate.
+ *  Sampling rate must be between 4Hz and 1kHz.
+ *  @param[in]  rate    Desired sampling rate (Hz).
+ *  @return     0 if successful.
+ */
+int mpu_set_sample_rate(unsigned short rate)
+{
+    unsigned char data;
+
+    if (!(st.chip_cfg.sensors))
+        return -1;
+
+    if (st.chip_cfg.dmp_on)
+        return -1;
+    else {
+        if (st.chip_cfg.lp_accel_mode) {
+            if (rate && (rate <= 40)) {
+                /* Just stay in low-power accel mode. */
+                mpu_lp_accel_mode(rate);
+                return 0;
+            }
+            /* Requested rate exceeds the allowed frequencies in LP accel mode,
+             * switch back to full-power mode.
+             */
+            mpu_lp_accel_mode(0);
+        }
+        if (rate < 4)
+            rate = 4;
+        else if (rate > 1000)
+            rate = 1000;
+
+        data = 1000 / rate - 1;
+        if (i2c_write(st.hw->addr, st.reg->rate_div, 1, &data))
+            return -1;
+
+        st.chip_cfg.sample_rate = 1000 / (1 + data);
+
+#ifdef AK89xx_SECONDARY
+        mpu_set_compass_sample_rate(min(st.chip_cfg.compass_sample_rate, MAX_COMPASS_SAMPLE_RATE));
+#endif
+
+        /* Automatically set LPF to 1/2 sampling rate. */
+        mpu_set_lpf(st.chip_cfg.sample_rate >> 1);
+        return 0;
+    }
+}
+
+/**
+ *  @brief      Get compass sampling rate.
+ *  @param[out] rate    Current compass sampling rate (Hz).
+ *  @return     0 if successful.
+ */
+int mpu_get_compass_sample_rate(unsigned short *rate)
+{
+#ifdef AK89xx_SECONDARY
+    rate[0] = st.chip_cfg.compass_sample_rate;
+    return 0;
+#else
+    rate[0] = 0;
+    return -1;
+#endif
+}
+
+/**
+ *  @brief      Set compass sampling rate.
+ *  The compass on the auxiliary I2C bus is read by the MPU hardware at a
+ *  maximum of 100Hz. The actual rate can be set to a fraction of the gyro
+ *  sampling rate.
+ *
+ *  \n WARNING: The new rate may be different than what was requested. Call
+ *  mpu_get_compass_sample_rate to check the actual setting.
+ *  @param[in]  rate    Desired compass sampling rate (Hz).
+ *  @return     0 if successful.
+ */
+int mpu_set_compass_sample_rate(unsigned short rate)
+{
+#ifdef AK89xx_SECONDARY
+    unsigned char div;
+    if (!rate || rate > st.chip_cfg.sample_rate || rate > MAX_COMPASS_SAMPLE_RATE)
+        return -1;
+
+    div = st.chip_cfg.sample_rate / rate - 1;
+    if (i2c_write(st.hw->addr, st.reg->s4_ctrl, 1, &div))
+        return -1;
+    st.chip_cfg.compass_sample_rate = st.chip_cfg.sample_rate / (div + 1);
+    return 0;
+#else
+    return -1;
+#endif
+}
+
+/**
+ *  @brief      Get gyro sensitivity scale factor.
+ *  @param[out] sens    Conversion from hardware units to dps.
+ *  @return     0 if successful.
+ */
+int mpu_get_gyro_sens(float *sens)
+{
+    switch (st.chip_cfg.gyro_fsr) {
+    case INV_FSR_250DPS:
+        sens[0] = 131.f;
+        break;
+    case INV_FSR_500DPS:
+        sens[0] = 65.5f;
+        break;
+    case INV_FSR_1000DPS:
+        sens[0] = 32.8f;
+        break;
+    case INV_FSR_2000DPS:
+        sens[0] = 16.4f;
+        break;
+    default:
+        return -1;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Get accel sensitivity scale factor.
+ *  @param[out] sens    Conversion from hardware units to g's.
+ *  @return     0 if successful.
+ */
+int mpu_get_accel_sens(unsigned short *sens)
+{
+    switch (st.chip_cfg.accel_fsr) {
+    case INV_FSR_2G:
+        sens[0] = 16384;
+        break;
+    case INV_FSR_4G:
+        sens[0] = 8192;
+        break;
+    case INV_FSR_8G:
+        sens[0] = 4096;
+        break;
+    case INV_FSR_16G:
+        sens[0] = 2048;
+        break;
+    default:
+        return -1;
+    }
+    if (st.chip_cfg.accel_half)
+        sens[0] >>= 1;
+    return 0;
+}
+
+/**
+ *  @brief      Get current FIFO configuration.
+ *  @e sensors can contain a combination of the following flags:
+ *  \n INV_X_GYRO, INV_Y_GYRO, INV_Z_GYRO
+ *  \n INV_XYZ_GYRO
+ *  \n INV_XYZ_ACCEL
+ *  @param[out] sensors Mask of sensors in FIFO.
+ *  @return     0 if successful.
+ */
+int mpu_get_fifo_config(unsigned char *sensors)
+{
+    sensors[0] = st.chip_cfg.fifo_enable;
+    return 0;
+}
+
+/**
+ *  @brief      Select which sensors are pushed to FIFO.
+ *  @e sensors can contain a combination of the following flags:
+ *  \n INV_X_GYRO, INV_Y_GYRO, INV_Z_GYRO
+ *  \n INV_XYZ_GYRO
+ *  \n INV_XYZ_ACCEL
+ *  @param[in]  sensors Mask of sensors to push to FIFO.
+ *  @return     0 if successful.
+ */
+int mpu_configure_fifo(unsigned char sensors)
+{
+    unsigned char prev;
+    int result = 0;
+
+    /* Compass data isn't going into the FIFO. Stop trying. */
+    sensors &= ~INV_XYZ_COMPASS;
+
+    if (st.chip_cfg.dmp_on)
+        return 0;
+    else {
+        if (!(st.chip_cfg.sensors))
+            return -1;
+        prev = st.chip_cfg.fifo_enable;
+        st.chip_cfg.fifo_enable = sensors & st.chip_cfg.sensors;
+        if (st.chip_cfg.fifo_enable != sensors)
+            /* You're not getting what you asked for. Some sensors are
+             * asleep.
+             */
+            result = -1;
+        else
+            result = 0;
+        if (sensors || st.chip_cfg.lp_accel_mode)
+            set_int_enable(1);
+        else
+            set_int_enable(0);
+        if (sensors) {
+            if (mpu_reset_fifo()) {
+                st.chip_cfg.fifo_enable = prev;
+                return -1;
+            }
+        }
+    }
+
+    return result;
+}
+
+/**
+ *  @brief      Get current power state.
+ *  @param[in]  power_on    1 if turned on, 0 if suspended.
+ *  @return     0 if successful.
+ */
+int mpu_get_power_state(unsigned char *power_on)
+{
+    if (st.chip_cfg.sensors)
+        power_on[0] = 1;
+    else
+        power_on[0] = 0;
+    return 0;
+}
+
+/**
+ *  @brief      Turn specific sensors on/off.
+ *  @e sensors can contain a combination of the following flags:
+ *  \n INV_X_GYRO, INV_Y_GYRO, INV_Z_GYRO
+ *  \n INV_XYZ_GYRO
+ *  \n INV_XYZ_ACCEL
+ *  \n INV_XYZ_COMPASS
+ *  @param[in]  sensors    Mask of sensors to wake.
+ *  @return     0 if successful.
+ */
+int mpu_set_sensors(unsigned char sensors)
+{
+    unsigned char data;
+#ifdef AK89xx_SECONDARY
+    unsigned char user_ctrl;
+#endif
+
+    if (sensors & INV_XYZ_GYRO)
+        data = INV_CLK_PLL;
+    else if (sensors)
+        data = 0;
+    else
+        data = BIT_SLEEP;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, &data)) {
+        st.chip_cfg.sensors = 0;
+        return -1;
+    }
+    st.chip_cfg.clk_src = data & ~BIT_SLEEP;
+
+    data = 0;
+    if (!(sensors & INV_X_GYRO))
+        data |= BIT_STBY_XG;
+    if (!(sensors & INV_Y_GYRO))
+        data |= BIT_STBY_YG;
+    if (!(sensors & INV_Z_GYRO))
+        data |= BIT_STBY_ZG;
+    if (!(sensors & INV_XYZ_ACCEL))
+        data |= BIT_STBY_XYZA;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_2, 1, &data)) {
+        st.chip_cfg.sensors = 0;
+        return -1;
+    }
+
+    if (sensors && (sensors != INV_XYZ_ACCEL))
+        /* Latched interrupts only used in LP accel mode. */
+        mpu_set_int_latched(0);
+
+#ifdef AK89xx_SECONDARY
+#ifdef AK89xx_BYPASS
+    if (sensors & INV_XYZ_COMPASS)
+        mpu_set_bypass(1);
+    else
+        mpu_set_bypass(0);
+#else
+    if (i2c_read(st.hw->addr, st.reg->user_ctrl, 1, &user_ctrl))
+        return -1;
+    /* Handle AKM power management. */
+    if (sensors & INV_XYZ_COMPASS) {
+        data = AKM_SINGLE_MEASUREMENT;
+        user_ctrl |= BIT_AUX_IF_EN;
+    } else {
+        data = AKM_POWER_DOWN;
+        user_ctrl &= ~BIT_AUX_IF_EN;
+    }
+    if (st.chip_cfg.dmp_on)
+        user_ctrl |= BIT_DMP_EN;
+    else
+        user_ctrl &= ~BIT_DMP_EN;
+    if (i2c_write(st.hw->addr, st.reg->s1_do, 1, &data))
+        return -1;
+    /* Enable/disable I2C master mode. */
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &user_ctrl))
+        return -1;
+#endif
+#endif
+
+    st.chip_cfg.sensors = sensors;
+    st.chip_cfg.lp_accel_mode = 0;
+    delay_ms(50);
+    return 0;
+}
+
+/**
+ *  @brief      Read the MPU interrupt status registers.
+ *  @param[out] status  Mask of interrupt bits.
+ *  @return     0 if successful.
+ */
+int mpu_get_int_status(short *status)
+{
+    unsigned char tmp[2];
+    if (!st.chip_cfg.sensors)
+        return -1;
+    if (i2c_read(st.hw->addr, st.reg->dmp_int_status, 2, tmp))
+        return -1;
+    status[0] = (tmp[0] << 8) | tmp[1];
+    return 0;
+}
+
+/**
+ *  @brief      Get one packet from the FIFO.
+ *  If @e sensors does not contain a particular sensor, disregard the data
+ *  returned to that pointer.
+ *  \n @e sensors can contain a combination of the following flags:
+ *  \n INV_X_GYRO, INV_Y_GYRO, INV_Z_GYRO
+ *  \n INV_XYZ_GYRO
+ *  \n INV_XYZ_ACCEL
+ *  \n If the FIFO has no new data, @e sensors will be zero.
+ *  \n If the FIFO is disabled, @e sensors will be zero and this function will
+ *  return a non-zero error code.
+ *  @param[out] gyro        Gyro data in hardware units.
+ *  @param[out] accel       Accel data in hardware units.
+ *  @param[out] timestamp   Timestamp in milliseconds.
+ *  @param[out] sensors     Mask of sensors read from FIFO.
+ *  @param[out] more        Number of remaining packets.
+ *  @return     0 if successful.
+ */
+int mpu_read_fifo(short *gyro, short *accel, unsigned long *timestamp,
+        unsigned char *sensors, unsigned char *more)
+{
+    /* Assumes maximum packet size is gyro (6) + accel (6). */
+    unsigned char data[MAX_PACKET_LENGTH];
+    unsigned char packet_size = 0;
+    unsigned short fifo_count, index = 0;
+
+    if (st.chip_cfg.dmp_on)
+        return -1;
+
+    sensors[0] = 0;
+    if (!st.chip_cfg.sensors)
+        return -1;
+    if (!st.chip_cfg.fifo_enable)
+        return -1;
+
+    if (st.chip_cfg.fifo_enable & INV_X_GYRO)
+        packet_size += 2;
+    if (st.chip_cfg.fifo_enable & INV_Y_GYRO)
+        packet_size += 2;
+    if (st.chip_cfg.fifo_enable & INV_Z_GYRO)
+        packet_size += 2;
+    if (st.chip_cfg.fifo_enable & INV_XYZ_ACCEL)
+        packet_size += 6;
+
+    if (i2c_read(st.hw->addr, st.reg->fifo_count_h, 2, data))
+        return -1;
+    fifo_count = (data[0] << 8) | data[1];
+    if (fifo_count < packet_size)
+        return 0;
+//    log_i("FIFO count: %hd\n", fifo_count);
+    if (fifo_count > (st.hw->max_fifo >> 1)) {
+        /* FIFO is 50% full, better check overflow bit. */
+        if (i2c_read(st.hw->addr, st.reg->int_status, 1, data))
+            return -1;
+        if (data[0] & BIT_FIFO_OVERFLOW) {
+            mpu_reset_fifo();
+            return -2;
+        }
+    }
+    get_ms((unsigned long*)timestamp);
+
+    if (i2c_read(st.hw->addr, st.reg->fifo_r_w, packet_size, data))
+        return -1;
+    more[0] = fifo_count / packet_size - 1;
+    sensors[0] = 0;
+
+    if ((index != packet_size) && st.chip_cfg.fifo_enable & INV_XYZ_ACCEL) {
+        accel[0] = (data[index+0] << 8) | data[index+1];
+        accel[1] = (data[index+2] << 8) | data[index+3];
+        accel[2] = (data[index+4] << 8) | data[index+5];
+        sensors[0] |= INV_XYZ_ACCEL;
+        index += 6;
+    }
+    if ((index != packet_size) && st.chip_cfg.fifo_enable & INV_X_GYRO) {
+        gyro[0] = (data[index+0] << 8) | data[index+1];
+        sensors[0] |= INV_X_GYRO;
+        index += 2;
+    }
+    if ((index != packet_size) && st.chip_cfg.fifo_enable & INV_Y_GYRO) {
+        gyro[1] = (data[index+0] << 8) | data[index+1];
+        sensors[0] |= INV_Y_GYRO;
+        index += 2;
+    }
+    if ((index != packet_size) && st.chip_cfg.fifo_enable & INV_Z_GYRO) {
+        gyro[2] = (data[index+0] << 8) | data[index+1];
+        sensors[0] |= INV_Z_GYRO;
+        index += 2;
+    }
+
+    return 0;
+}
+
+/**
+ *  @brief      Get one unparsed packet from the FIFO.
+ *  This function should be used if the packet is to be parsed elsewhere.
+ *  @param[in]  length  Length of one FIFO packet.
+ *  @param[in]  data    FIFO packet.
+ *  @param[in]  more    Number of remaining packets.
+ */
+int mpu_read_fifo_stream(unsigned short length, unsigned char *data,
+    unsigned char *more)
+{
+    unsigned char tmp[2];
+    unsigned short fifo_count;
+    if (!st.chip_cfg.dmp_on)
+        return -1;
+    if (!st.chip_cfg.sensors)
+        return -1;
+
+    if (i2c_read(st.hw->addr, st.reg->fifo_count_h, 2, tmp))
+        return -1;
+    fifo_count = (tmp[0] << 8) | tmp[1];
+    if (fifo_count < length) {
+        more[0] = 0;
+        return -1;
+    }
+    if (fifo_count > (st.hw->max_fifo >> 1)) {
+        /* FIFO is 50% full, better check overflow bit. */
+        if (i2c_read(st.hw->addr, st.reg->int_status, 1, tmp))
+            return -1;
+        if (tmp[0] & BIT_FIFO_OVERFLOW) {
+            mpu_reset_fifo();
+            return -2;
+        }
+    }
+
+    if (i2c_read(st.hw->addr, st.reg->fifo_r_w, length, data))
+        return -1;
+    more[0] = fifo_count / length - 1;
+    return 0;
+}
+
+/**
+ *  @brief      Set device to bypass mode.
+ *  @param[in]  bypass_on   1 to enable bypass mode.
+ *  @return     0 if successful.
+ */
+int mpu_set_bypass(unsigned char bypass_on)
+{
+    unsigned char tmp;
+
+    if (st.chip_cfg.bypass_mode == bypass_on)
+        return 0;
+
+    if (bypass_on) {
+        if (i2c_read(st.hw->addr, st.reg->user_ctrl, 1, &tmp))
+            return -1;
+        tmp &= ~BIT_AUX_IF_EN;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &tmp))
+            return -1;
+        delay_ms(3);
+        tmp = BIT_BYPASS_EN;
+        if (st.chip_cfg.active_low_int)
+            tmp |= BIT_ACTL;
+        if (st.chip_cfg.latched_int)
+            tmp |= BIT_LATCH_EN | BIT_ANY_RD_CLR;
+        if (i2c_write(st.hw->addr, st.reg->int_pin_cfg, 1, &tmp))
+            return -1;
+    } else {
+        /* Enable I2C master mode if compass is being used. */
+        if (i2c_read(st.hw->addr, st.reg->user_ctrl, 1, &tmp))
+            return -1;
+        if (st.chip_cfg.sensors & INV_XYZ_COMPASS)
+            tmp |= BIT_AUX_IF_EN;
+        else
+            tmp &= ~BIT_AUX_IF_EN;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, &tmp))
+            return -1;
+        delay_ms(3);
+        if (st.chip_cfg.active_low_int)
+            tmp = BIT_ACTL;
+        else
+            tmp = 0;
+        if (st.chip_cfg.latched_int)
+            tmp |= BIT_LATCH_EN | BIT_ANY_RD_CLR;
+        if (i2c_write(st.hw->addr, st.reg->int_pin_cfg, 1, &tmp))
+            return -1;
+    }
+    st.chip_cfg.bypass_mode = bypass_on;
+    return 0;
+}
+
+/**
+ *  @brief      Set interrupt level.
+ *  @param[in]  active_low  1 for active low, 0 for active high.
+ *  @return     0 if successful.
+ */
+int mpu_set_int_level(unsigned char active_low)
+{
+    st.chip_cfg.active_low_int = active_low;
+    return 0;
+}
+
+/**
+ *  @brief      Enable latched interrupts.
+ *  Any MPU register will clear the interrupt.
+ *  @param[in]  enable  1 to enable, 0 to disable.
+ *  @return     0 if successful.
+ */
+int mpu_set_int_latched(unsigned char enable)
+{
+    unsigned char tmp;
+    if (st.chip_cfg.latched_int == enable)
+        return 0;
+
+    if (enable)
+        tmp = BIT_LATCH_EN | BIT_ANY_RD_CLR;
+    else
+        tmp = 0;
+    if (st.chip_cfg.bypass_mode)
+        tmp |= BIT_BYPASS_EN;
+    if (st.chip_cfg.active_low_int)
+        tmp |= BIT_ACTL;
+    if (i2c_write(st.hw->addr, st.reg->int_pin_cfg, 1, &tmp))
+        return -1;
+    st.chip_cfg.latched_int = enable;
+    return 0;
+}
+
+#ifdef MPU6050
+static int get_accel_prod_shift(float *st_shift)
+{
+    unsigned char tmp[4], shift_code[3], ii;
+
+    if (i2c_read(st.hw->addr, 0x0D, 4, tmp))
+        return 0x07;
+
+    shift_code[0] = ((tmp[0] & 0xE0) >> 3) | ((tmp[3] & 0x30) >> 4);
+    shift_code[1] = ((tmp[1] & 0xE0) >> 3) | ((tmp[3] & 0x0C) >> 2);
+    shift_code[2] = ((tmp[2] & 0xE0) >> 3) | (tmp[3] & 0x03);
+    for (ii = 0; ii < 3; ii++) {
+        if (!shift_code[ii]) {
+            st_shift[ii] = 0.f;
+            continue;
+        }
+        /* Equivalent to..
+         * st_shift[ii] = 0.34f * powf(0.92f/0.34f, (shift_code[ii]-1) / 30.f)
+         */
+        st_shift[ii] = 0.34f;
+        while (--shift_code[ii])
+            st_shift[ii] *= 1.034f;
+    }
+    return 0;
+}
+
+static int accel_self_test(long *bias_regular, long *bias_st)
+{
+    int jj, result = 0;
+    float st_shift[3], st_shift_cust, st_shift_var;
+
+    get_accel_prod_shift(st_shift);
+    for(jj = 0; jj < 3; jj++) {
+        st_shift_cust = labs(bias_regular[jj] - bias_st[jj]) / 65536.f;
+        if (st_shift[jj]) {
+            st_shift_var = st_shift_cust / st_shift[jj] - 1.f;
+            if (fabs(st_shift_var) > test.max_accel_var)
+                result |= 1 << jj;
+        } else if ((st_shift_cust < test.min_g) ||
+            (st_shift_cust > test.max_g))
+            result |= 1 << jj;
+    }
+
+    return result;
+}
+
+static int gyro_self_test(long *bias_regular, long *bias_st)
+{
+    int jj, result = 0;
+    unsigned char tmp[3];
+    float st_shift, st_shift_cust, st_shift_var;
+
+    if (i2c_read(st.hw->addr, 0x0D, 3, tmp))
+        return 0x07;
+
+    tmp[0] &= 0x1F;
+    tmp[1] &= 0x1F;
+    tmp[2] &= 0x1F;
+
+    for (jj = 0; jj < 3; jj++) {
+        st_shift_cust = labs(bias_regular[jj] - bias_st[jj]) / 65536.f;
+        if (tmp[jj]) {
+            st_shift = 3275.f / test.gyro_sens;
+            while (--tmp[jj])
+                st_shift *= 1.046f;
+            st_shift_var = st_shift_cust / st_shift - 1.f;
+            if (fabs(st_shift_var) > test.max_gyro_var)
+                result |= 1 << jj;
+        } else if ((st_shift_cust < test.min_dps) ||
+            (st_shift_cust > test.max_dps))
+            result |= 1 << jj;
+    }
+    return result;
+}
+
+#endif 
+#ifdef AK89xx_SECONDARY
+static int compass_self_test(void)
+{
+    unsigned char tmp[6];
+    unsigned char tries = 10;
+    int result = 0x07;
+    short data;
+
+    mpu_set_bypass(1);
+
+    tmp[0] = AKM_POWER_DOWN;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, tmp))
+        return 0x07;
+    tmp[0] = AKM_BIT_SELF_TEST;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_ASTC, 1, tmp))
+        goto AKM_restore;
+    tmp[0] = AKM_MODE_SELF_TEST;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, tmp))
+        goto AKM_restore;
+
+    do {
+        delay_ms(10);
+        if (i2c_read(st.chip_cfg.compass_addr, AKM_REG_ST1, 1, tmp))
+            goto AKM_restore;
+        if (tmp[0] & AKM_DATA_READY)
+            break;
+    } while (tries--);
+    if (!(tmp[0] & AKM_DATA_READY))
+        goto AKM_restore;
+
+    if (i2c_read(st.chip_cfg.compass_addr, AKM_REG_HXL, 6, tmp))
+        goto AKM_restore;
+
+    result = 0;
+#if defined MPU9150
+    data = (short)(tmp[1] << 8) | tmp[0];
+    if ((data > 100) || (data < -100))
+        result |= 0x01;
+    data = (short)(tmp[3] << 8) | tmp[2];
+    if ((data > 100) || (data < -100))
+        result |= 0x02;
+    data = (short)(tmp[5] << 8) | tmp[4];
+    if ((data > -300) || (data < -1000))
+        result |= 0x04;
+#elif defined MPU9250
+    data = (short)(tmp[1] << 8) | tmp[0];
+    if ((data > 200) || (data < -200))  
+        result |= 0x01;
+    data = (short)(tmp[3] << 8) | tmp[2];
+    if ((data > 200) || (data < -200))  
+        result |= 0x02;
+    data = (short)(tmp[5] << 8) | tmp[4];
+    if ((data > -800) || (data < -3200))  
+        result |= 0x04;
+#endif
+AKM_restore:
+    tmp[0] = 0 | SUPPORTS_AK89xx_HIGH_SENS;
+    i2c_write(st.chip_cfg.compass_addr, AKM_REG_ASTC, 1, tmp);
+    tmp[0] = SUPPORTS_AK89xx_HIGH_SENS;
+    i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, tmp);
+    mpu_set_bypass(0);
+    return result;
+}
+#endif
+
+static int get_st_biases(long *gyro, long *accel, unsigned char hw_test)
+{
+    unsigned char data[MAX_PACKET_LENGTH];
+    unsigned char packet_count, ii;
+    unsigned short fifo_count;
+
+    data[0] = 0x01;
+    data[1] = 0;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 2, data))
+        return -1;
+    delay_ms(200);
+    data[0] = 0;
+    if (i2c_write(st.hw->addr, st.reg->int_enable, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->i2c_mst, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+    data[0] = BIT_FIFO_RST | BIT_DMP_RST;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+    delay_ms(15);
+    data[0] = st.test->reg_lpf;
+    if (i2c_write(st.hw->addr, st.reg->lpf, 1, data))
+        return -1;
+    data[0] = st.test->reg_rate_div;
+    if (i2c_write(st.hw->addr, st.reg->rate_div, 1, data))
+        return -1;
+    if (hw_test)
+        data[0] = st.test->reg_gyro_fsr | 0xE0;
+    else
+        data[0] = st.test->reg_gyro_fsr;
+    if (i2c_write(st.hw->addr, st.reg->gyro_cfg, 1, data))
+        return -1;
+
+    if (hw_test)
+        data[0] = st.test->reg_accel_fsr | 0xE0;
+    else
+        data[0] = test.reg_accel_fsr;
+    if (i2c_write(st.hw->addr, st.reg->accel_cfg, 1, data))
+        return -1;
+    if (hw_test)
+        delay_ms(200);
+
+    /* Fill FIFO for test.wait_ms milliseconds. */
+    data[0] = BIT_FIFO_EN;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+
+    data[0] = INV_XYZ_GYRO | INV_XYZ_ACCEL;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+    delay_ms(test.wait_ms);
+    data[0] = 0;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+
+    if (i2c_read(st.hw->addr, st.reg->fifo_count_h, 2, data))
+        return -1;
+
+    fifo_count = (data[0] << 8) | data[1];
+    packet_count = fifo_count / MAX_PACKET_LENGTH;
+    gyro[0] = gyro[1] = gyro[2] = 0;
+    accel[0] = accel[1] = accel[2] = 0;
+
+    for (ii = 0; ii < packet_count; ii++) {
+        short accel_cur[3], gyro_cur[3];
+        if (i2c_read(st.hw->addr, st.reg->fifo_r_w, MAX_PACKET_LENGTH, data))
+            return -1;
+        accel_cur[0] = ((short)data[0] << 8) | data[1];
+        accel_cur[1] = ((short)data[2] << 8) | data[3];
+        accel_cur[2] = ((short)data[4] << 8) | data[5];
+        accel[0] += (long)accel_cur[0];
+        accel[1] += (long)accel_cur[1];
+        accel[2] += (long)accel_cur[2];
+        gyro_cur[0] = (((short)data[6] << 8) | data[7]);
+        gyro_cur[1] = (((short)data[8] << 8) | data[9]);
+        gyro_cur[2] = (((short)data[10] << 8) | data[11]);
+        gyro[0] += (long)gyro_cur[0];
+        gyro[1] += (long)gyro_cur[1];
+        gyro[2] += (long)gyro_cur[2];
+    }
+#ifdef EMPL_NO_64BIT
+    gyro[0] = (long)(((float)gyro[0]*65536.f) / test.gyro_sens / packet_count);
+    gyro[1] = (long)(((float)gyro[1]*65536.f) / test.gyro_sens / packet_count);
+    gyro[2] = (long)(((float)gyro[2]*65536.f) / test.gyro_sens / packet_count);
+    if (has_accel) {
+        accel[0] = (long)(((float)accel[0]*65536.f) / test.accel_sens /
+            packet_count);
+        accel[1] = (long)(((float)accel[1]*65536.f) / test.accel_sens /
+            packet_count);
+        accel[2] = (long)(((float)accel[2]*65536.f) / test.accel_sens /
+            packet_count);
+        /* Don't remove gravity! */
+        accel[2] -= 65536L;
+    }
+#else
+    gyro[0] = (long)(((long long)gyro[0]<<16) / test.gyro_sens / packet_count);
+    gyro[1] = (long)(((long long)gyro[1]<<16) / test.gyro_sens / packet_count);
+    gyro[2] = (long)(((long long)gyro[2]<<16) / test.gyro_sens / packet_count);
+    accel[0] = (long)(((long long)accel[0]<<16) / test.accel_sens /
+        packet_count);
+    accel[1] = (long)(((long long)accel[1]<<16) / test.accel_sens /
+        packet_count);
+    accel[2] = (long)(((long long)accel[2]<<16) / test.accel_sens /
+        packet_count);
+    /* Don't remove gravity! */
+    if (accel[2] > 0L)
+        accel[2] -= 65536L;
+    else
+        accel[2] += 65536L;
+#endif
+
+    return 0;
+}
+
+#ifdef MPU6500
+#define REG_6500_XG_ST_DATA     0x0
+#define REG_6500_XA_ST_DATA     0xD
+static const unsigned short mpu_6500_st_tb[256] = {
+	2620,2646,2672,2699,2726,2753,2781,2808, //7
+	2837,2865,2894,2923,2952,2981,3011,3041, //15
+	3072,3102,3133,3165,3196,3228,3261,3293, //23
+	3326,3359,3393,3427,3461,3496,3531,3566, //31
+	3602,3638,3674,3711,3748,3786,3823,3862, //39
+	3900,3939,3979,4019,4059,4099,4140,4182, //47
+	4224,4266,4308,4352,4395,4439,4483,4528, //55
+	4574,4619,4665,4712,4759,4807,4855,4903, //63
+	4953,5002,5052,5103,5154,5205,5257,5310, //71
+	5363,5417,5471,5525,5581,5636,5693,5750, //79
+	5807,5865,5924,5983,6043,6104,6165,6226, //87
+	6289,6351,6415,6479,6544,6609,6675,6742, //95
+	6810,6878,6946,7016,7086,7157,7229,7301, //103
+	7374,7448,7522,7597,7673,7750,7828,7906, //111
+	7985,8065,8145,8227,8309,8392,8476,8561, //119
+	8647,8733,8820,8909,8998,9088,9178,9270,
+	9363,9457,9551,9647,9743,9841,9939,10038,
+	10139,10240,10343,10446,10550,10656,10763,10870,
+	10979,11089,11200,11312,11425,11539,11654,11771,
+	11889,12008,12128,12249,12371,12495,12620,12746,
+	12874,13002,13132,13264,13396,13530,13666,13802,
+	13940,14080,14221,14363,14506,14652,14798,14946,
+	15096,15247,15399,15553,15709,15866,16024,16184,
+	16346,16510,16675,16842,17010,17180,17352,17526,
+	17701,17878,18057,18237,18420,18604,18790,18978,
+	19167,19359,19553,19748,19946,20145,20347,20550,
+	20756,20963,21173,21385,21598,21814,22033,22253,
+	22475,22700,22927,23156,23388,23622,23858,24097,
+	24338,24581,24827,25075,25326,25579,25835,26093,
+	26354,26618,26884,27153,27424,27699,27976,28255,
+	28538,28823,29112,29403,29697,29994,30294,30597,
+	30903,31212,31524,31839,32157,32479,32804,33132
+};
+static int accel_6500_self_test(long *bias_regular, long *bias_st, int debug)
+{
+    int i, result = 0, otp_value_zero = 0;
+    float accel_st_al_min, accel_st_al_max;
+    float st_shift_cust[3], st_shift_ratio[3], ct_shift_prod[3], accel_offset_max;
+    unsigned char regs[3];
+    if (i2c_read(st.hw->addr, REG_6500_XA_ST_DATA, 3, regs)) {
+    	if(debug)
+    		log_i("Reading OTP Register Error.\n");
+    	return 0x07;
+    }
+    if(debug)
+    	log_i("Accel OTP:%d, %d, %d\n", regs[0], regs[1], regs[2]);
+	for (i = 0; i < 3; i++) {
+		if (regs[i] != 0) {
+			ct_shift_prod[i] = mpu_6500_st_tb[regs[i] - 1];
+			ct_shift_prod[i] *= 65536.f;
+			ct_shift_prod[i] /= test.accel_sens;
+		}
+		else {
+			ct_shift_prod[i] = 0;
+			otp_value_zero = 1;
+		}
+	}
+	if(otp_value_zero == 0) {
+		if(debug)
+			log_i("ACCEL:CRITERIA A\n");
+		for (i = 0; i < 3; i++) {
+			st_shift_cust[i] = bias_st[i] - bias_regular[i];
+			if(debug) {
+				log_i("Bias_Shift=%7.4f, Bias_Reg=%7.4f, Bias_HWST=%7.4f\r\n",
+						st_shift_cust[i]/1.f, bias_regular[i]/1.f,
+						bias_st[i]/1.f);
+				log_i("OTP value: %7.4f\r\n", ct_shift_prod[i]/1.f);
+			}
+
+			st_shift_ratio[i] = st_shift_cust[i] / ct_shift_prod[i] - 1.f;
+
+			if(debug)
+				log_i("ratio=%7.4f, threshold=%7.4f\r\n", st_shift_ratio[i]/1.f,
+							test.max_accel_var/1.f);
+
+			if (fabs(st_shift_ratio[i]) > test.max_accel_var) {
+				if(debug)
+					log_i("ACCEL Fail Axis = %d\n", i);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+	else {
+		/* Self Test Pass/Fail Criteria B */
+		accel_st_al_min = test.min_g * 65536.f;
+		accel_st_al_max = test.max_g * 65536.f;
+
+		if(debug) {
+			log_i("ACCEL:CRITERIA B\r\n");
+			log_i("Min MG: %7.4f\r\n", accel_st_al_min/1.f);
+			log_i("Max MG: %7.4f\r\n", accel_st_al_max/1.f);
+		}
+
+		for (i = 0; i < 3; i++) {
+			st_shift_cust[i] = bias_st[i] - bias_regular[i];
+
+			if(debug)
+				log_i("Bias_shift=%7.4f, st=%7.4f, reg=%7.4f\n", st_shift_cust[i]/1.f, bias_st[i]/1.f, bias_regular[i]/1.f);
+			if(st_shift_cust[i] < accel_st_al_min || st_shift_cust[i] > accel_st_al_max) {
+				if(debug)
+					log_i("Accel FAIL axis:%d <= 225mg or >= 675mg\n", i);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+
+	if(result == 0) {
+	/* Self Test Pass/Fail Criteria C */
+		accel_offset_max = test.max_g_offset * 65536.f;
+		if(debug)
+			log_i("Accel:CRITERIA C: bias less than %7.4f\n", accel_offset_max/1.f);
+		for (i = 0; i < 3; i++) {
+			if(fabs(bias_regular[i]) > accel_offset_max) {
+				if(debug)
+					log_i("FAILED: Accel axis:%d = %ld > 500mg\n", i, bias_regular[i]);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+
+    return result;
+}
+
+static int gyro_6500_self_test(long *bias_regular, long *bias_st, int debug)
+{
+    int i, result = 0, otp_value_zero = 0;
+    float gyro_st_al_max;
+    float st_shift_cust[3], st_shift_ratio[3], ct_shift_prod[3], gyro_offset_max;
+    unsigned char regs[3];
+
+    if (i2c_read(st.hw->addr, REG_6500_XG_ST_DATA, 3, regs)) {
+    	if(debug)
+    		log_i("Reading OTP Register Error.\n");
+        return 0x07;
+    }
+
+    if(debug)
+    	log_i("Gyro OTP:%d, %d, %d\r\n", regs[0], regs[1], regs[2]);
+
+	for (i = 0; i < 3; i++) {
+		if (regs[i] != 0) {
+			ct_shift_prod[i] = mpu_6500_st_tb[regs[i] - 1];
+			ct_shift_prod[i] *= 65536.f;
+			ct_shift_prod[i] /= test.gyro_sens;
+		}
+		else {
+			ct_shift_prod[i] = 0;
+			otp_value_zero = 1;
+		}
+	}
+
+	if(otp_value_zero == 0) {
+		if(debug)
+			log_i("GYRO:CRITERIA A\n");
+		/* Self Test Pass/Fail Criteria A */
+		for (i = 0; i < 3; i++) {
+			st_shift_cust[i] = bias_st[i] - bias_regular[i];
+
+			if(debug) {
+				log_i("Bias_Shift=%7.4f, Bias_Reg=%7.4f, Bias_HWST=%7.4f\r\n",
+						st_shift_cust[i]/1.f, bias_regular[i]/1.f,
+						bias_st[i]/1.f);
+				log_i("OTP value: %7.4f\r\n", ct_shift_prod[i]/1.f);
+			}
+
+			st_shift_ratio[i] = st_shift_cust[i] / ct_shift_prod[i];
+
+			if(debug)
+				log_i("ratio=%7.4f, threshold=%7.4f\r\n", st_shift_ratio[i]/1.f,
+							test.max_gyro_var/1.f);
+
+			if (fabs(st_shift_ratio[i]) < test.max_gyro_var) {
+				if(debug)
+					log_i("Gyro Fail Axis = %d\n", i);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+	else {
+		/* Self Test Pass/Fail Criteria B */
+		gyro_st_al_max = test.max_dps * 65536.f;
+
+		if(debug) {
+			log_i("GYRO:CRITERIA B\r\n");
+			log_i("Max DPS: %7.4f\r\n", gyro_st_al_max/1.f);
+		}
+
+		for (i = 0; i < 3; i++) {
+			st_shift_cust[i] = bias_st[i] - bias_regular[i];
+
+			if(debug)
+				log_i("Bias_shift=%7.4f, st=%7.4f, reg=%7.4f\n", st_shift_cust[i]/1.f, bias_st[i]/1.f, bias_regular[i]/1.f);
+			if(st_shift_cust[i] < gyro_st_al_max) {
+				if(debug)
+					log_i("GYRO FAIL axis:%d greater than 60dps\n", i);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+
+	if(result == 0) {
+	/* Self Test Pass/Fail Criteria C */
+		gyro_offset_max = test.min_dps * 65536.f;
+		if(debug)
+			log_i("Gyro:CRITERIA C: bias less than %7.4f\n", gyro_offset_max/1.f);
+		for (i = 0; i < 3; i++) {
+			if(fabs(bias_regular[i]) > gyro_offset_max) {
+				if(debug)
+					log_i("FAILED: Gyro axis:%d = %ld > 20dps\n", i, bias_regular[i]);
+				result |= 1 << i;	//Error condition
+			}
+		}
+	}
+    return result;
+}
+
+static int get_st_6500_biases(long *gyro, long *accel, unsigned char hw_test, int debug)
+{
+    unsigned char data[HWST_MAX_PACKET_LENGTH];
+    unsigned char packet_count, ii;
+    unsigned short fifo_count;
+    int s = 0, read_size = 0, ind;
+
+    data[0] = 0x01;
+    data[1] = 0;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 2, data))
+        return -1;
+    delay_ms(200);
+    data[0] = 0;
+    if (i2c_write(st.hw->addr, st.reg->int_enable, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->i2c_mst, 1, data))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+    data[0] = BIT_FIFO_RST | BIT_DMP_RST;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+    delay_ms(15);
+    data[0] = st.test->reg_lpf;
+    if (i2c_write(st.hw->addr, st.reg->lpf, 1, data))
+        return -1;
+    data[0] = st.test->reg_rate_div;
+    if (i2c_write(st.hw->addr, st.reg->rate_div, 1, data))
+        return -1;
+    if (hw_test)
+        data[0] = st.test->reg_gyro_fsr | 0xE0;
+    else
+        data[0] = st.test->reg_gyro_fsr;
+    if (i2c_write(st.hw->addr, st.reg->gyro_cfg, 1, data))
+        return -1;
+
+    if (hw_test)
+        data[0] = st.test->reg_accel_fsr | 0xE0;
+    else
+        data[0] = test.reg_accel_fsr;
+    if (i2c_write(st.hw->addr, st.reg->accel_cfg, 1, data))
+        return -1;
+
+    delay_ms(test.wait_ms);  //wait 200ms for sensors to stabilize
+
+    /* Enable FIFO */
+    data[0] = BIT_FIFO_EN;
+    if (i2c_write(st.hw->addr, st.reg->user_ctrl, 1, data))
+        return -1;
+    data[0] = INV_XYZ_GYRO | INV_XYZ_ACCEL;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+
+    //initialize the bias return values
+    gyro[0] = gyro[1] = gyro[2] = 0;
+    accel[0] = accel[1] = accel[2] = 0;
+
+    if(debug)
+    	log_i("Starting Bias Loop Reads\n");
+
+    //start reading samples
+    while (s < test.packet_thresh) {
+    	delay_ms(test.sample_wait_ms); //wait 10ms to fill FIFO
+		if (i2c_read(st.hw->addr, st.reg->fifo_count_h, 2, data))
+			return -1;
+		fifo_count = (data[0] << 8) | data[1];
+		packet_count = fifo_count / MAX_PACKET_LENGTH;
+		if ((test.packet_thresh - s) < packet_count)
+		            packet_count = test.packet_thresh - s;
+		read_size = packet_count * MAX_PACKET_LENGTH;
+
+		//burst read from FIFO
+		if (i2c_read(st.hw->addr, st.reg->fifo_r_w, read_size, data))
+						return -1;
+		ind = 0;
+		for (ii = 0; ii < packet_count; ii++) {
+			short accel_cur[3], gyro_cur[3];
+			accel_cur[0] = ((short)data[ind + 0] << 8) | data[ind + 1];
+			accel_cur[1] = ((short)data[ind + 2] << 8) | data[ind + 3];
+			accel_cur[2] = ((short)data[ind + 4] << 8) | data[ind + 5];
+			accel[0] += (long)accel_cur[0];
+			accel[1] += (long)accel_cur[1];
+			accel[2] += (long)accel_cur[2];
+			gyro_cur[0] = (((short)data[ind + 6] << 8) | data[ind + 7]);
+			gyro_cur[1] = (((short)data[ind + 8] << 8) | data[ind + 9]);
+			gyro_cur[2] = (((short)data[ind + 10] << 8) | data[ind + 11]);
+			gyro[0] += (long)gyro_cur[0];
+			gyro[1] += (long)gyro_cur[1];
+			gyro[2] += (long)gyro_cur[2];
+			ind += MAX_PACKET_LENGTH;
+		}
+		s += packet_count;
+    }
+
+    if(debug)
+    	log_i("Samples: %d\n", s);
+
+    //stop FIFO
+    data[0] = 0;
+    if (i2c_write(st.hw->addr, st.reg->fifo_en, 1, data))
+        return -1;
+
+    gyro[0] = (long)(((long long)gyro[0]<<16) / test.gyro_sens / s);
+    gyro[1] = (long)(((long long)gyro[1]<<16) / test.gyro_sens / s);
+    gyro[2] = (long)(((long long)gyro[2]<<16) / test.gyro_sens / s);
+    accel[0] = (long)(((long long)accel[0]<<16) / test.accel_sens / s);
+    accel[1] = (long)(((long long)accel[1]<<16) / test.accel_sens / s);
+    accel[2] = (long)(((long long)accel[2]<<16) / test.accel_sens / s);
+    /* remove gravity from bias calculation */
+    if (accel[2] > 0L)
+        accel[2] -= 65536L;
+    else
+        accel[2] += 65536L;
+
+
+    if(debug) {
+    	log_i("Accel offset data HWST bit=%d: %7.4f %7.4f %7.4f\r\n", hw_test, accel[0]/65536.f, accel[1]/65536.f, accel[2]/65536.f);
+    	log_i("Gyro offset data HWST bit=%d: %7.4f %7.4f %7.4f\r\n", hw_test, gyro[0]/65536.f, gyro[1]/65536.f, gyro[2]/65536.f);
+    }
+
+    return 0;
+}
+/**
+ *  @brief      Trigger gyro/accel/compass self-test for MPU6500/MPU9250
+ *  On success/error, the self-test returns a mask representing the sensor(s)
+ *  that failed. For each bit, a one (1) represents a "pass" case; conversely,
+ *  a zero (0) indicates a failure.
+ *
+ *  \n The mask is defined as follows:
+ *  \n Bit 0:   Gyro.
+ *  \n Bit 1:   Accel.
+ *  \n Bit 2:   Compass.
+ *
+ *  @param[out] gyro        Gyro biases in q16 format.
+ *  @param[out] accel       Accel biases (if applicable) in q16 format.
+ *  @param[in]  debug       Debug flag used to print out more detailed logs. Must first set up logging in Motion Driver.
+ *  @return     Result mask (see above).
+ */
+int mpu_run_6500_self_test(long *gyro, long *accel, unsigned char debug)
+{
+    const unsigned char tries = 2;
+    long gyro_st[3], accel_st[3];
+    unsigned char accel_result, gyro_result;
+#ifdef AK89xx_SECONDARY
+    unsigned char compass_result;
+#endif
+    int ii;
+
+    int result;
+    unsigned char accel_fsr, fifo_sensors, sensors_on;
+    unsigned short gyro_fsr, sample_rate, lpf;
+    unsigned char dmp_was_on;
+
+
+
+    if(debug)
+    	log_i("Starting MPU6500 HWST!\r\n");
+
+    if (st.chip_cfg.dmp_on) {
+        mpu_set_dmp_state(0);
+        dmp_was_on = 1;
+    } else
+        dmp_was_on = 0;
+
+    /* Get initial settings. */
+    mpu_get_gyro_fsr(&gyro_fsr);
+    mpu_get_accel_fsr(&accel_fsr);
+    mpu_get_lpf(&lpf);
+    mpu_get_sample_rate(&sample_rate);
+    sensors_on = st.chip_cfg.sensors;
+    mpu_get_fifo_config(&fifo_sensors);
+
+    if(debug)
+    	log_i("Retrieving Biases\r\n");
+
+    for (ii = 0; ii < tries; ii++)
+        if (!get_st_6500_biases(gyro, accel, 0, debug))
+            break;
+    if (ii == tries) {
+        /* If we reach this point, we most likely encountered an I2C error.
+         * We'll just report an error for all three sensors.
+         */
+        if(debug)
+        	log_i("Retrieving Biases Error - possible I2C error\n");
+
+        result = 0;
+        goto restore;
+    }
+
+    if(debug)
+    	log_i("Retrieving ST Biases\n");
+
+    for (ii = 0; ii < tries; ii++)
+        if (!get_st_6500_biases(gyro_st, accel_st, 1, debug))
+            break;
+    if (ii == tries) {
+
+        if(debug)
+        	log_i("Retrieving ST Biases Error - possible I2C error\n");
+
+        /* Again, probably an I2C error. */
+        result = 0;
+        goto restore;
+    }
+
+    accel_result = accel_6500_self_test(accel, accel_st, debug);
+    if(debug)
+    	log_i("Accel Self Test Results: %d\n", accel_result);
+
+    gyro_result = gyro_6500_self_test(gyro, gyro_st, debug);
+    if(debug)
+    	log_i("Gyro Self Test Results: %d\n", gyro_result);
+
+    result = 0;
+    if (!gyro_result)
+        result |= 0x01;
+    if (!accel_result)
+        result |= 0x02;
+
+#ifdef AK89xx_SECONDARY
+    compass_result = compass_self_test();
+    if(debug)
+    	log_i("Compass Self Test Results: %d\n", compass_result);
+    if (!compass_result)
+        result |= 0x04;
+#else
+    result |= 0x04;
+#endif
+restore:
+	if(debug)
+		log_i("Exiting HWST\n");
+	/* Set to invalid values to ensure no I2C writes are skipped. */
+	st.chip_cfg.gyro_fsr = 0xFF;
+	st.chip_cfg.accel_fsr = 0xFF;
+	st.chip_cfg.lpf = 0xFF;
+	st.chip_cfg.sample_rate = 0xFFFF;
+	st.chip_cfg.sensors = 0xFF;
+	st.chip_cfg.fifo_enable = 0xFF;
+	st.chip_cfg.clk_src = INV_CLK_PLL;
+	mpu_set_gyro_fsr(gyro_fsr);
+	mpu_set_accel_fsr(accel_fsr);
+	mpu_set_lpf(lpf);
+	mpu_set_sample_rate(sample_rate);
+	mpu_set_sensors(sensors_on);
+	mpu_configure_fifo(fifo_sensors);
+
+	if (dmp_was_on)
+		mpu_set_dmp_state(1);
+
+	return result;
+}
+#endif
+ /*
+ *  \n This function must be called with the device either face-up or face-down
+ *  (z-axis is parallel to gravity).
+ *  @param[out] gyro        Gyro biases in q16 format.
+ *  @param[out] accel       Accel biases (if applicable) in q16 format.
+ *  @return     Result mask (see above).
+ */
+int mpu_run_self_test(long *gyro, long *accel)
+{
+#ifdef MPU6050
+    const unsigned char tries = 2;
+    long gyro_st[3], accel_st[3];
+    unsigned char accel_result, gyro_result;
+#ifdef AK89xx_SECONDARY
+    unsigned char compass_result;
+#endif
+    int ii;
+#endif
+    int result;
+    unsigned char accel_fsr, fifo_sensors, sensors_on;
+    unsigned short gyro_fsr, sample_rate, lpf;
+    unsigned char dmp_was_on;
+
+    if (st.chip_cfg.dmp_on) {
+        mpu_set_dmp_state(0);
+        dmp_was_on = 1;
+    } else
+        dmp_was_on = 0;
+
+    /* Get initial settings. */
+    mpu_get_gyro_fsr(&gyro_fsr);
+    mpu_get_accel_fsr(&accel_fsr);
+    mpu_get_lpf(&lpf);
+    mpu_get_sample_rate(&sample_rate);
+    sensors_on = st.chip_cfg.sensors;
+    mpu_get_fifo_config(&fifo_sensors);
+
+    /* For older chips, the self-test will be different. */
+#if defined MPU6050
+    for (ii = 0; ii < tries; ii++)
+        if (!get_st_biases(gyro, accel, 0))
+            break;
+    if (ii == tries) {
+        /* If we reach this point, we most likely encountered an I2C error.
+         * We'll just report an error for all three sensors.
+         */
+        result = 0;
+        goto restore;
+    }
+    for (ii = 0; ii < tries; ii++)
+        if (!get_st_biases(gyro_st, accel_st, 1))
+            break;
+    if (ii == tries) {
+        /* Again, probably an I2C error. */
+        result = 0;
+        goto restore;
+    }
+    accel_result = accel_self_test(accel, accel_st);
+    gyro_result = gyro_self_test(gyro, gyro_st);
+
+    result = 0;
+    if (!gyro_result)
+        result |= 0x01;
+    if (!accel_result)
+        result |= 0x02;
+
+#ifdef AK89xx_SECONDARY
+    compass_result = compass_self_test();
+    if (!compass_result)
+        result |= 0x04;
+#else
+        result |= 0x04;
+#endif
+restore:
+#elif defined MPU6500
+    /* For now, this function will return a "pass" result for all three sensors
+     * for compatibility with current test applications.
+     */
+    get_st_biases(gyro, accel, 0);
+    result = 0x7;
+#endif
+    /* Set to invalid values to ensure no I2C writes are skipped. */
+    st.chip_cfg.gyro_fsr = 0xFF;
+    st.chip_cfg.accel_fsr = 0xFF;
+    st.chip_cfg.lpf = 0xFF;
+    st.chip_cfg.sample_rate = 0xFFFF;
+    st.chip_cfg.sensors = 0xFF;
+    st.chip_cfg.fifo_enable = 0xFF;
+    st.chip_cfg.clk_src = INV_CLK_PLL;
+    mpu_set_gyro_fsr(gyro_fsr);
+    mpu_set_accel_fsr(accel_fsr);
+    mpu_set_lpf(lpf);
+    mpu_set_sample_rate(sample_rate);
+    mpu_set_sensors(sensors_on);
+    mpu_configure_fifo(fifo_sensors);
+
+    if (dmp_was_on)
+        mpu_set_dmp_state(1);
+
+    return result;
+}
+
+/**
+ *  @brief      Write to the DMP memory.
+ *  This function prevents I2C writes past the bank boundaries. The DMP memory
+ *  is only accessible when the chip is awake.
+ *  @param[in]  mem_addr    Memory location (bank << 8 | start address)
+ *  @param[in]  length      Number of bytes to write.
+ *  @param[in]  data        Bytes to write to memory.
+ *  @return     0 if successful.
+ */
+int mpu_write_mem(unsigned short mem_addr, unsigned short length,
+        unsigned char *data)
+{
+    unsigned char tmp[2];
+
+    if (!data)
+        return -1;
+    if (!st.chip_cfg.sensors)
+        return -1;
+
+    tmp[0] = (unsigned char)(mem_addr >> 8);
+    tmp[1] = (unsigned char)(mem_addr & 0xFF);
+
+    /* Check bank boundaries. */
+    if (tmp[1] + length > st.hw->bank_size)
+        return -1;
+
+    if (i2c_write(st.hw->addr, st.reg->bank_sel, 2, tmp))
+        return -1;
+    if (i2c_write(st.hw->addr, st.reg->mem_r_w, length, data))
+        return -1;
+    return 0;
+}
+
+/**
+ *  @brief      Read from the DMP memory.
+ *  This function prevents I2C reads past the bank boundaries. The DMP memory
+ *  is only accessible when the chip is awake.
+ *  @param[in]  mem_addr    Memory location (bank << 8 | start address)
+ *  @param[in]  length      Number of bytes to read.
+ *  @param[out] data        Bytes read from memory.
+ *  @return     0 if successful.
+ */
+int mpu_read_mem(unsigned short mem_addr, unsigned short length,
+        unsigned char *data)
+{
+    unsigned char tmp[2];
+
+    if (!data)
+        return -1;
+    if (!st.chip_cfg.sensors)
+        return -1;
+
+    tmp[0] = (unsigned char)(mem_addr >> 8);
+    tmp[1] = (unsigned char)(mem_addr & 0xFF);
+
+    /* Check bank boundaries. */
+    if (tmp[1] + length > st.hw->bank_size)
+        return -1;
+
+    if (i2c_write(st.hw->addr, st.reg->bank_sel, 2, tmp))
+        return -1;
+    if (i2c_read(st.hw->addr, st.reg->mem_r_w, length, data))
+        return -1;
+    return 0;
+}
+
+/**
+ *  @brief      Load and verify DMP image.
+ *  @param[in]  length      Length of DMP image.
+ *  @param[in]  firmware    DMP code.
+ *  @param[in]  start_addr  Starting address of DMP code memory.
+ *  @param[in]  sample_rate Fixed sampling rate used when DMP is enabled.
+ *  @return     0 if successful.
+ */
+int mpu_load_firmware(unsigned short length, const unsigned char *firmware,
+    unsigned short start_addr, unsigned short sample_rate)
+{
+    unsigned short ii;
+    unsigned short this_write;
+    /* Must divide evenly into st.hw->bank_size to avoid bank crossings. */
+#define LOAD_CHUNK  (16)
+    unsigned char cur[LOAD_CHUNK], tmp[2];
+
+    if (st.chip_cfg.dmp_loaded)
+        /* DMP should only be loaded once. */
+        return -1;
+
+    if (!firmware)
+        return -1;
+    for (ii = 0; ii < length; ii += this_write) {
+        this_write = min(LOAD_CHUNK, length - ii);
+        if (mpu_write_mem(ii, this_write, (unsigned char*)&firmware[ii]))
+            return -1;
+        if (mpu_read_mem(ii, this_write, cur))
+            return -1;
+        if (memcmp(firmware+ii, cur, this_write))
+            return -2;
+    }
+
+    /* Set program start address. */
+    tmp[0] = start_addr >> 8;
+    tmp[1] = start_addr & 0xFF;
+    if (i2c_write(st.hw->addr, st.reg->prgm_start_h, 2, tmp))
+        return -1;
+
+    st.chip_cfg.dmp_loaded = 1;
+    st.chip_cfg.dmp_sample_rate = sample_rate;
+    return 0;
+}
+
+/**
+ *  @brief      Enable/disable DMP support.
+ *  @param[in]  enable  1 to turn on the DMP.
+ *  @return     0 if successful.
+ */
+int mpu_set_dmp_state(unsigned char enable)
+{
+    unsigned char tmp;
+    if (st.chip_cfg.dmp_on == enable)
+        return 0;
+
+    if (enable) {
+        if (!st.chip_cfg.dmp_loaded)
+            return -1;
+        /* Disable data ready interrupt. */
+        set_int_enable(0);
+        /* Disable bypass mode. */
+        mpu_set_bypass(0);
+        /* Keep constant sample rate, FIFO rate controlled by DMP. */
+        mpu_set_sample_rate(st.chip_cfg.dmp_sample_rate);
+        /* Remove FIFO elements. */
+        tmp = 0;
+        i2c_write(st.hw->addr, 0x23, 1, &tmp);
+        st.chip_cfg.dmp_on = 1;
+        /* Enable DMP interrupt. */
+        set_int_enable(1);
+        mpu_reset_fifo();
+    } else {
+        /* Disable DMP interrupt. */
+        set_int_enable(0);
+        /* Restore FIFO settings. */
+        tmp = st.chip_cfg.fifo_enable;
+        i2c_write(st.hw->addr, 0x23, 1, &tmp);
+        st.chip_cfg.dmp_on = 0;
+        mpu_reset_fifo();
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Get DMP state.
+ *  @param[out] enabled 1 if enabled.
+ *  @return     0 if successful.
+ */
+int mpu_get_dmp_state(unsigned char *enabled)
+{
+    enabled[0] = st.chip_cfg.dmp_on;
+    return 0;
+}
+
+#ifdef AK89xx_SECONDARY
+/* This initialization is similar to the one in ak8975.c. */
+static int setup_compass(void)
+{
+    unsigned char data[4], akm_addr;
+
+    mpu_set_bypass(1);
+
+    /* Find compass. Possible addresses range from 0x0C to 0x0F. */
+    for (akm_addr = 0x0C; akm_addr <= 0x0F; akm_addr++) {
+        int result;
+        result = i2c_read(akm_addr, AKM_REG_WHOAMI, 1, data);
+        if (!result && (data[0] == AKM_WHOAMI))
+            break;
+    }
+
+    if (akm_addr > 0x0F) {
+        /* TODO: Handle this case in all compass-related functions. */
+        log_e("Compass not found.\n");
+        return -1;
+    }
+
+    st.chip_cfg.compass_addr = akm_addr;
+
+    data[0] = AKM_POWER_DOWN;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, data))
+        return -1;
+    delay_ms(1);
+
+    data[0] = AKM_FUSE_ROM_ACCESS;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, data))
+        return -1;
+    delay_ms(1);
+
+    /* Get sensitivity adjustment data from fuse ROM. */
+    if (i2c_read(st.chip_cfg.compass_addr, AKM_REG_ASAX, 3, data))
+        return -1;
+    st.chip_cfg.mag_sens_adj[0] = (long)data[0] + 128;
+    st.chip_cfg.mag_sens_adj[1] = (long)data[1] + 128;
+    st.chip_cfg.mag_sens_adj[2] = (long)data[2] + 128;
+
+    data[0] = AKM_POWER_DOWN;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, data))
+        return -1;
+    delay_ms(1);
+
+    mpu_set_bypass(0);
+
+    /* Set up master mode, master clock, and ES bit. */
+    data[0] = 0x40;
+    if (i2c_write(st.hw->addr, st.reg->i2c_mst, 1, data))
+        return -1;
+
+    /* Slave 0 reads from AKM data registers. */
+    data[0] = BIT_I2C_READ | st.chip_cfg.compass_addr;
+    if (i2c_write(st.hw->addr, st.reg->s0_addr, 1, data))
+        return -1;
+
+    /* Compass reads start at this register. */
+    data[0] = AKM_REG_ST1;
+    if (i2c_write(st.hw->addr, st.reg->s0_reg, 1, data))
+        return -1;
+
+    /* Enable slave 0, 8-byte reads. */
+    data[0] = BIT_SLAVE_EN | 8;
+    if (i2c_write(st.hw->addr, st.reg->s0_ctrl, 1, data))
+        return -1;
+
+    /* Slave 1 changes AKM measurement mode. */
+    data[0] = st.chip_cfg.compass_addr;
+    if (i2c_write(st.hw->addr, st.reg->s1_addr, 1, data))
+        return -1;
+
+    /* AKM measurement mode register. */
+    data[0] = AKM_REG_CNTL;
+    if (i2c_write(st.hw->addr, st.reg->s1_reg, 1, data))
+        return -1;
+
+    /* Enable slave 1, 1-byte writes. */
+    data[0] = BIT_SLAVE_EN | 1;
+    if (i2c_write(st.hw->addr, st.reg->s1_ctrl, 1, data))
+        return -1;
+
+    /* Set slave 1 data. */
+    data[0] = AKM_SINGLE_MEASUREMENT;
+    if (i2c_write(st.hw->addr, st.reg->s1_do, 1, data))
+        return -1;
+
+    /* Trigger slave 0 and slave 1 actions at each sample. */
+    data[0] = 0x03;
+    if (i2c_write(st.hw->addr, st.reg->i2c_delay_ctrl, 1, data))
+        return -1;
+
+#ifdef MPU9150
+    /* For the MPU9150, the auxiliary I2C bus needs to be set to VDD. */
+    data[0] = BIT_I2C_MST_VDDIO;
+    if (i2c_write(st.hw->addr, st.reg->yg_offs_tc, 1, data))
+        return -1;
+#endif
+
+    return 0;
+}
+#endif
+
+/**
+ *  @brief      Read raw compass data.
+ *  @param[out] data        Raw data in hardware units.
+ *  @param[out] timestamp   Timestamp in milliseconds. Null if not needed.
+ *  @return     0 if successful.
+ */
+int mpu_get_compass_reg(short *data, unsigned long *timestamp)
+{
+#ifdef AK89xx_SECONDARY
+    unsigned char tmp[9];
+
+    if (!(st.chip_cfg.sensors & INV_XYZ_COMPASS))
+        return -1;
+
+#ifdef AK89xx_BYPASS
+    if (i2c_read(st.chip_cfg.compass_addr, AKM_REG_ST1, 8, tmp))
+        return -1;
+    tmp[8] = AKM_SINGLE_MEASUREMENT;
+    if (i2c_write(st.chip_cfg.compass_addr, AKM_REG_CNTL, 1, tmp+8))
+        return -1;
+#else
+    if (i2c_read(st.hw->addr, st.reg->raw_compass, 8, tmp))
+        return -1;
+#endif
+
+#if defined AK8975_SECONDARY
+    /* AK8975 doesn't have the overrun error bit. */
+    if (!(tmp[0] & AKM_DATA_READY))
+        return -2;
+    if ((tmp[7] & AKM_OVERFLOW) || (tmp[7] & AKM_DATA_ERROR))
+        return -3;
+#elif defined AK8963_SECONDARY
+    /* AK8963 doesn't have the data read error bit. */
+    if (!(tmp[0] & AKM_DATA_READY) || (tmp[0] & AKM_DATA_OVERRUN))
+        return -2;
+    if (tmp[7] & AKM_OVERFLOW)
+        return -3;
+#endif
+    data[0] = (tmp[2] << 8) | tmp[1];
+    data[1] = (tmp[4] << 8) | tmp[3];
+    data[2] = (tmp[6] << 8) | tmp[5];
+
+    data[0] = ((long)data[0] * st.chip_cfg.mag_sens_adj[0]) >> 8;
+    data[1] = ((long)data[1] * st.chip_cfg.mag_sens_adj[1]) >> 8;
+    data[2] = ((long)data[2] * st.chip_cfg.mag_sens_adj[2]) >> 8;
+
+    if (timestamp)
+        get_ms(timestamp);
+    return 0;
+#else
+    return -1;
+#endif
+}
+
+/**
+ *  @brief      Get the compass full-scale range.
+ *  @param[out] fsr Current full-scale range.
+ *  @return     0 if successful.
+ */
+int mpu_get_compass_fsr(unsigned short *fsr)
+{
+#ifdef AK89xx_SECONDARY
+    fsr[0] = st.hw->compass_fsr;
+    return 0;
+#else
+    return -1;
+#endif
+}
+
+/**
+ *  @brief      Enters LP accel motion interrupt mode.
+ *  The behaviour of this feature is very different between the MPU6050 and the
+ *  MPU6500. Each chip's version of this feature is explained below.
+ *
+ *  \n The hardware motion threshold can be between 32mg and 8160mg in 32mg
+ *  increments.
+ *
+ *  \n Low-power accel mode supports the following frequencies:
+ *  \n 1.25Hz, 5Hz, 20Hz, 40Hz
+ *
+ *  \n MPU6500:
+ *  \n Unlike the MPU6050 version, the hardware does not "lock in" a reference
+ *  sample. The hardware monitors the accel data and detects any large change
+ *  over a short period of time.
+ *
+ *  \n The hardware motion threshold can be between 4mg and 1020mg in 4mg
+ *  increments.
+ *
+ *  \n MPU6500 Low-power accel mode supports the following frequencies:
+ *  \n 1.25Hz, 2.5Hz, 5Hz, 10Hz, 20Hz, 40Hz, 80Hz, 160Hz, 320Hz, 640Hz
+ *
+ *  \n\n NOTES:
+ *  \n The driver will round down @e thresh to the nearest supported value if
+ *  an unsupported threshold is selected.
+ *  \n To select a fractional wake-up frequency, round down the value passed to
+ *  @e lpa_freq.
+ *  \n The MPU6500 does not support a delay parameter. If this function is used
+ *  for the MPU6500, the value passed to @e time will be ignored.
+ *  \n To disable this mode, set @e lpa_freq to zero. The driver will restore
+ *  the previous configuration.
+ *
+ *  @param[in]  thresh      Motion threshold in mg.
+ *  @param[in]  time        Duration in milliseconds that the accel data must
+ *                          exceed @e thresh before motion is reported.
+ *  @param[in]  lpa_freq    Minimum sampling rate, or zero to disable.
+ *  @return     0 if successful.
+ */
+int mpu_lp_motion_interrupt(unsigned short thresh, unsigned char time,
+    unsigned short lpa_freq)
+{
+
+#if defined MPU6500
+    unsigned char data[3];
+#endif
+    if (lpa_freq) {
+#if defined MPU6500
+    	unsigned char thresh_hw;
+
+        /* 1LSb = 4mg. */
+        if (thresh > 1020)
+            thresh_hw = 255;
+        else if (thresh < 4)
+            thresh_hw = 1;
+        else
+            thresh_hw = thresh >> 2;
+#endif
+
+        if (!time)
+            /* Minimum duration must be 1ms. */
+            time = 1;
+
+#if defined MPU6500
+        if (lpa_freq > 640)
+            /* At this point, the chip has not been re-configured, so the
+             * function can safely exit.
+             */
+            return -1;
+#endif
+
+        if (!st.chip_cfg.int_motion_only) {
+            /* Store current settings for later. */
+            if (st.chip_cfg.dmp_on) {
+                mpu_set_dmp_state(0);
+                st.chip_cfg.cache.dmp_on = 1;
+            } else
+                st.chip_cfg.cache.dmp_on = 0;
+            mpu_get_gyro_fsr(&st.chip_cfg.cache.gyro_fsr);
+            mpu_get_accel_fsr(&st.chip_cfg.cache.accel_fsr);
+            mpu_get_lpf(&st.chip_cfg.cache.lpf);
+            mpu_get_sample_rate(&st.chip_cfg.cache.sample_rate);
+            st.chip_cfg.cache.sensors_on = st.chip_cfg.sensors;
+            mpu_get_fifo_config(&st.chip_cfg.cache.fifo_sensors);
+        }
+
+#if defined MPU6500
+        /* Disable hardware interrupts. */
+        set_int_enable(0);
+
+        /* Enter full-power accel-only mode, no FIFO/DMP. */
+        data[0] = 0;
+        data[1] = 0;
+        data[2] = BIT_STBY_XYZG;
+        if (i2c_write(st.hw->addr, st.reg->user_ctrl, 3, data))
+            goto lp_int_restore;
+
+        /* Set motion threshold. */
+        data[0] = thresh_hw;
+        if (i2c_write(st.hw->addr, st.reg->motion_thr, 1, data))
+            goto lp_int_restore;
+
+        /* Set wake frequency. */
+        if (lpa_freq == 1)
+            data[0] = INV_LPA_1_25HZ;
+        else if (lpa_freq == 2)
+            data[0] = INV_LPA_2_5HZ;
+        else if (lpa_freq <= 5)
+            data[0] = INV_LPA_5HZ;
+        else if (lpa_freq <= 10)
+            data[0] = INV_LPA_10HZ;
+        else if (lpa_freq <= 20)
+            data[0] = INV_LPA_20HZ;
+        else if (lpa_freq <= 40)
+            data[0] = INV_LPA_40HZ;
+        else if (lpa_freq <= 80)
+            data[0] = INV_LPA_80HZ;
+        else if (lpa_freq <= 160)
+            data[0] = INV_LPA_160HZ;
+        else if (lpa_freq <= 320)
+            data[0] = INV_LPA_320HZ;
+        else
+            data[0] = INV_LPA_640HZ;
+        if (i2c_write(st.hw->addr, st.reg->lp_accel_odr, 1, data))
+            goto lp_int_restore;
+
+        /* Enable motion interrupt (MPU6500 version). */
+        data[0] = BITS_WOM_EN;
+        if (i2c_write(st.hw->addr, st.reg->accel_intel, 1, data))
+            goto lp_int_restore;
+
+        /* Enable cycle mode. */
+        data[0] = BIT_LPA_CYCLE;
+        if (i2c_write(st.hw->addr, st.reg->pwr_mgmt_1, 1, data))
+            goto lp_int_restore;
+
+        /* Enable interrupt. */
+        data[0] = BIT_MOT_INT_EN;
+        if (i2c_write(st.hw->addr, st.reg->int_enable, 1, data))
+            goto lp_int_restore;
+
+        st.chip_cfg.int_motion_only = 1;
+        return 0;
+#endif
+    } else {
+        /* Don't "restore" the previous state if no state has been saved. */
+        unsigned int ii;
+        char *cache_ptr = (char*)&st.chip_cfg.cache;
+        for (ii = 0; ii < sizeof(st.chip_cfg.cache); ii++) {
+            if (cache_ptr[ii] != 0)
+                goto lp_int_restore;
+        }
+        /* If we reach this point, motion interrupt mode hasn't been used yet. */
+        return -1;
+    }
+lp_int_restore:
+    /* Set to invalid values to ensure no I2C writes are skipped. */
+    st.chip_cfg.gyro_fsr = 0xFF;
+    st.chip_cfg.accel_fsr = 0xFF;
+    st.chip_cfg.lpf = 0xFF;
+    st.chip_cfg.sample_rate = 0xFFFF;
+    st.chip_cfg.sensors = 0xFF;
+    st.chip_cfg.fifo_enable = 0xFF;
+    st.chip_cfg.clk_src = INV_CLK_PLL;
+    mpu_set_sensors(st.chip_cfg.cache.sensors_on);
+    mpu_set_gyro_fsr(st.chip_cfg.cache.gyro_fsr);
+    mpu_set_accel_fsr(st.chip_cfg.cache.accel_fsr);
+    mpu_set_lpf(st.chip_cfg.cache.lpf);
+    mpu_set_sample_rate(st.chip_cfg.cache.sample_rate);
+    mpu_configure_fifo(st.chip_cfg.cache.fifo_sensors);
+
+    if (st.chip_cfg.cache.dmp_on)
+        mpu_set_dmp_state(1);
+
+#ifdef MPU6500
+    /* Disable motion interrupt (MPU6500 version). */
+    data[0] = 0;
+    if (i2c_write(st.hw->addr, st.reg->accel_intel, 1, data))
+        goto lp_int_restore;
+#endif
+
+    st.chip_cfg.int_motion_only = 0;
+    return 0;
+}
+
+/**
+ *  @}
+ */
+
+
diff -r 000000000000 -r 5fa30cf392c3 inv_mpu.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inv_mpu.h	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,135 @@
+/*
+ $License:
+    Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved.
+    See included License.txt for License information.
+ $
+ */
+/**
+ *  @addtogroup  DRIVERS Sensor Driver Layer
+ *  @brief       Hardware drivers to communicate with sensors via I2C.
+ *
+ *  @{
+ *      @file       inv_mpu.h
+ *      @brief      An I2C-based driver for Invensense gyroscopes.
+ *      @details    This driver currently works for the following devices:
+ *                  MPU6050
+ *                  MPU6500
+ *                  MPU9150 (or MPU6050 w/ AK8975 on the auxiliary bus)
+ *                  MPU9250 (or MPU6500 w/ AK8963 on the auxiliary bus)
+ */
+
+#ifndef _INV_MPU_H_
+#define _INV_MPU_H_
+
+#define INV_X_GYRO      (0x40)
+#define INV_Y_GYRO      (0x20)
+#define INV_Z_GYRO      (0x10)
+#define INV_XYZ_GYRO    (INV_X_GYRO | INV_Y_GYRO | INV_Z_GYRO)
+#define INV_XYZ_ACCEL   (0x08)
+#define INV_XYZ_COMPASS (0x01)
+
+struct int_param_s {
+#if defined EMPL_TARGET_MSP430 || defined MOTION_DRIVER_TARGET_MSP430
+    void (*cb)(void);
+    unsigned short pin;
+    unsigned char lp_exit;
+    unsigned char active_low;
+#elif defined EMPL_TARGET_UC3L0
+    unsigned long pin;
+    void (*cb)(volatile void*);
+    void *arg;
+#elif defined EMPL_TARGET_STM32F4
+    void (*cb)(void);
+#endif
+};
+
+#define MPU_INT_STATUS_DATA_READY       (0x0001)
+#define MPU_INT_STATUS_DMP              (0x0002)
+#define MPU_INT_STATUS_PLL_READY        (0x0004)
+#define MPU_INT_STATUS_I2C_MST          (0x0008)
+#define MPU_INT_STATUS_FIFO_OVERFLOW    (0x0010)
+#define MPU_INT_STATUS_ZMOT             (0x0020)
+#define MPU_INT_STATUS_MOT              (0x0040)
+#define MPU_INT_STATUS_FREE_FALL        (0x0080)
+#define MPU_INT_STATUS_DMP_0            (0x0100)
+#define MPU_INT_STATUS_DMP_1            (0x0200)
+#define MPU_INT_STATUS_DMP_2            (0x0400)
+#define MPU_INT_STATUS_DMP_3            (0x0800)
+#define MPU_INT_STATUS_DMP_4            (0x1000)
+#define MPU_INT_STATUS_DMP_5            (0x2000)
+
+/* Set up APIs */
+int mpu_init(struct int_param_s *int_param);
+int mpu_init_slave(void);
+int mpu_set_bypass(unsigned char bypass_on);
+
+/* Configuration APIs */
+int mpu_lp_accel_mode(unsigned short rate);
+int mpu_lp_motion_interrupt(unsigned short thresh, unsigned char time,
+    unsigned short lpa_freq);
+int mpu_set_int_level(unsigned char active_low);
+int mpu_set_int_latched(unsigned char enable);
+
+int mpu_set_dmp_state(unsigned char enable);
+int mpu_get_dmp_state(unsigned char *enabled);
+
+int mpu_get_lpf(unsigned short *lpf);
+int mpu_set_lpf(unsigned short lpf);
+
+int mpu_get_gyro_fsr(unsigned short *fsr);
+int mpu_set_gyro_fsr(unsigned short fsr);
+
+int mpu_get_accel_fsr(unsigned char *fsr);
+int mpu_set_accel_fsr(unsigned char fsr);
+
+int mpu_get_compass_fsr(unsigned short *fsr);
+
+int mpu_get_gyro_sens(float *sens);
+int mpu_get_accel_sens(unsigned short *sens);
+
+int mpu_get_sample_rate(unsigned short *rate);
+int mpu_set_sample_rate(unsigned short rate);
+int mpu_get_compass_sample_rate(unsigned short *rate);
+int mpu_set_compass_sample_rate(unsigned short rate);
+
+int mpu_get_fifo_config(unsigned char *sensors);
+int mpu_configure_fifo(unsigned char sensors);
+
+int mpu_get_power_state(unsigned char *power_on);
+int mpu_set_sensors(unsigned char sensors);
+
+int mpu_read_6500_accel_bias(long *accel_bias);
+int mpu_set_gyro_bias_reg(long * gyro_bias);
+int mpu_set_accel_bias_6500_reg(const long *accel_bias);
+int mpu_read_6050_accel_bias(long *accel_bias);
+int mpu_set_accel_bias_6050_reg(const long *accel_bias);
+
+/* Data getter/setter APIs */
+int mpu_get_gyro_reg(short *data, unsigned long *timestamp);
+int mpu_get_accel_reg(short *data, unsigned long *timestamp);
+int mpu_get_compass_reg(short *data, unsigned long *timestamp);
+int mpu_get_temperature(long *data, unsigned long *timestamp);
+
+int mpu_get_int_status(short *status);
+int mpu_read_fifo(short *gyro, short *accel, unsigned long *timestamp,
+    unsigned char *sensors, unsigned char *more);
+int mpu_read_fifo_stream(unsigned short length, unsigned char *data,
+    unsigned char *more);
+int mpu_reset_fifo(void);
+
+int mpu_write_mem(unsigned short mem_addr, unsigned short length,
+    unsigned char *data);
+int mpu_read_mem(unsigned short mem_addr, unsigned short length,
+    unsigned char *data);
+int mpu_load_firmware(unsigned short length, const unsigned char *firmware,
+    unsigned short start_addr, unsigned short sample_rate);
+
+int mpu_reg_dump(void);
+int mpu_read_reg(unsigned char reg, unsigned char *data);
+int mpu_run_self_test(long *gyro, long *accel);
+int mpu_run_6500_self_test(long *gyro, long *accel, unsigned char debug);
+int mpu_register_tap_cb(void (*func)(unsigned char, unsigned char));
+
+#endif  /* #ifndef _INV_MPU_H_ */
+
+
diff -r 000000000000 -r 5fa30cf392c3 inv_mpu_dmp_motion_driver.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inv_mpu_dmp_motion_driver.c	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,1379 @@
+/*
+ $License:
+    Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved.
+    See included License.txt for License information.
+ $
+ */
+/**
+ *  @addtogroup  DRIVERS Sensor Driver Layer
+ *  @brief       Hardware drivers to communicate with sensors via I2C.
+ *
+ *  @{
+ *      @file       inv_mpu_dmp_motion_driver.c
+ *      @brief      DMP image and interface functions.
+ *      @details    All functions are preceded by the dmp_ prefix to
+ *                  differentiate among MPL and general driver function calls.
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "inv_mpu.h"
+#include "inv_mpu_dmp_motion_driver.h"
+#include "dmpKey.h"
+#include "dmpmap.h"
+
+/* The following functions must be defined for this platform:
+ * i2c_write(unsigned char slave_addr, unsigned char reg_addr,
+ *      unsigned char length, unsigned char const *data)
+ * i2c_read(unsigned char slave_addr, unsigned char reg_addr,
+ *      unsigned char length, unsigned char *data)
+ * delay_ms(unsigned long num_ms)
+ * get_ms(unsigned long *count)
+ */
+#if defined EMPL_TARGET_STM32F4
+#include "i2c.h"   
+#include "main.h"
+#include "board-st_discovery.h"
+   
+#define i2c_write   Sensors_I2C_WriteRegister
+#define i2c_read    Sensors_I2C_ReadRegister
+#define get_ms      get_tick_count
+
+#elif defined MOTION_DRIVER_TARGET_MSP430
+#include "msp430.h"
+#include "msp430_clock.h"
+#define delay_ms    msp430_delay_ms
+#define get_ms      msp430_get_clock_ms
+#define log_i(...)     do {} while (0)
+#define log_e(...)     do {} while (0)
+
+#elif defined EMPL_TARGET_MSP430
+#include "msp430.h"
+#include "msp430_clock.h"
+#include "log.h"
+#define delay_ms    msp430_delay_ms
+#define get_ms      msp430_get_clock_ms
+#define log_i       MPL_LOGI
+#define log_e       MPL_LOGE
+
+#elif defined EMPL_TARGET_UC3L0
+/* Instead of using the standard TWI driver from the ASF library, we're using
+ * a TWI driver that follows the slave address + register address convention.
+ */
+#include "delay.h"
+#include "sysclk.h"
+#include "log.h"
+#include "uc3l0_clock.h"
+/* delay_ms is a function already defined in ASF. */
+#define get_ms  uc3l0_get_clock_ms
+#define log_i       MPL_LOGI
+#define log_e       MPL_LOGE
+
+#else
+#error  Gyro driver is missing the system layer implementations.
+#endif
+
+/* These defines are copied from dmpDefaultMPU6050.c in the general MPL
+ * releases. These defines may change for each DMP image, so be sure to modify
+ * these values when switching to a new image.
+ */
+#define CFG_LP_QUAT             (2712)
+#define END_ORIENT_TEMP         (1866)
+#define CFG_27                  (2742)
+#define CFG_20                  (2224)
+#define CFG_23                  (2745)
+#define CFG_FIFO_ON_EVENT       (2690)
+#define END_PREDICTION_UPDATE   (1761)
+#define CGNOTICE_INTR           (2620)
+#define X_GRT_Y_TMP             (1358)
+#define CFG_DR_INT              (1029)
+#define CFG_AUTH                (1035)
+#define UPDATE_PROP_ROT         (1835)
+#define END_COMPARE_Y_X_TMP2    (1455)
+#define SKIP_X_GRT_Y_TMP        (1359)
+#define SKIP_END_COMPARE        (1435)
+#define FCFG_3                  (1088)
+#define FCFG_2                  (1066)
+#define FCFG_1                  (1062)
+#define END_COMPARE_Y_X_TMP3    (1434)
+#define FCFG_7                  (1073)
+#define FCFG_6                  (1106)
+#define FLAT_STATE_END          (1713)
+#define SWING_END_4             (1616)
+#define SWING_END_2             (1565)
+#define SWING_END_3             (1587)
+#define SWING_END_1             (1550)
+#define CFG_8                   (2718)
+#define CFG_15                  (2727)
+#define CFG_16                  (2746)
+#define CFG_EXT_GYRO_BIAS       (1189)
+#define END_COMPARE_Y_X_TMP     (1407)
+#define DO_NOT_UPDATE_PROP_ROT  (1839)
+#define CFG_7                   (1205)
+#define FLAT_STATE_END_TEMP     (1683)
+#define END_COMPARE_Y_X         (1484)
+#define SKIP_SWING_END_1        (1551)
+#define SKIP_SWING_END_3        (1588)
+#define SKIP_SWING_END_2        (1566)
+#define TILTG75_START           (1672)
+#define CFG_6                   (2753)
+#define TILTL75_END             (1669)
+#define END_ORIENT              (1884)
+#define CFG_FLICK_IN            (2573)
+#define TILTL75_START           (1643)
+#define CFG_MOTION_BIAS         (1208)
+#define X_GRT_Y                 (1408)
+#define TEMPLABEL               (2324)
+#define CFG_ANDROID_ORIENT_INT  (1853)
+#define CFG_GYRO_RAW_DATA       (2722)
+#define X_GRT_Y_TMP2            (1379)
+
+#define D_0_22                  (22+512)
+#define D_0_24                  (24+512)
+
+#define D_0_36                  (36)
+#define D_0_52                  (52)
+#define D_0_96                  (96)
+#define D_0_104                 (104)
+#define D_0_108                 (108)
+#define D_0_163                 (163)
+#define D_0_188                 (188)
+#define D_0_192                 (192)
+#define D_0_224                 (224)
+#define D_0_228                 (228)
+#define D_0_232                 (232)
+#define D_0_236                 (236)
+
+#define D_1_2                   (256 + 2)
+#define D_1_4                   (256 + 4)
+#define D_1_8                   (256 + 8)
+#define D_1_10                  (256 + 10)
+#define D_1_24                  (256 + 24)
+#define D_1_28                  (256 + 28)
+#define D_1_36                  (256 + 36)
+#define D_1_40                  (256 + 40)
+#define D_1_44                  (256 + 44)
+#define D_1_72                  (256 + 72)
+#define D_1_74                  (256 + 74)
+#define D_1_79                  (256 + 79)
+#define D_1_88                  (256 + 88)
+#define D_1_90                  (256 + 90)
+#define D_1_92                  (256 + 92)
+#define D_1_96                  (256 + 96)
+#define D_1_98                  (256 + 98)
+#define D_1_106                 (256 + 106)
+#define D_1_108                 (256 + 108)
+#define D_1_112                 (256 + 112)
+#define D_1_128                 (256 + 144)
+#define D_1_152                 (256 + 12)
+#define D_1_160                 (256 + 160)
+#define D_1_176                 (256 + 176)
+#define D_1_178                 (256 + 178)
+#define D_1_218                 (256 + 218)
+#define D_1_232                 (256 + 232)
+#define D_1_236                 (256 + 236)
+#define D_1_240                 (256 + 240)
+#define D_1_244                 (256 + 244)
+#define D_1_250                 (256 + 250)
+#define D_1_252                 (256 + 252)
+#define D_2_12                  (512 + 12)
+#define D_2_96                  (512 + 96)
+#define D_2_108                 (512 + 108)
+#define D_2_208                 (512 + 208)
+#define D_2_224                 (512 + 224)
+#define D_2_236                 (512 + 236)
+#define D_2_244                 (512 + 244)
+#define D_2_248                 (512 + 248)
+#define D_2_252                 (512 + 252)
+
+#define CPASS_BIAS_X            (35 * 16 + 4)
+#define CPASS_BIAS_Y            (35 * 16 + 8)
+#define CPASS_BIAS_Z            (35 * 16 + 12)
+#define CPASS_MTX_00            (36 * 16)
+#define CPASS_MTX_01            (36 * 16 + 4)
+#define CPASS_MTX_02            (36 * 16 + 8)
+#define CPASS_MTX_10            (36 * 16 + 12)
+#define CPASS_MTX_11            (37 * 16)
+#define CPASS_MTX_12            (37 * 16 + 4)
+#define CPASS_MTX_20            (37 * 16 + 8)
+#define CPASS_MTX_21            (37 * 16 + 12)
+#define CPASS_MTX_22            (43 * 16 + 12)
+#define D_EXT_GYRO_BIAS_X       (61 * 16)
+#define D_EXT_GYRO_BIAS_Y       (61 * 16) + 4
+#define D_EXT_GYRO_BIAS_Z       (61 * 16) + 8
+#define D_ACT0                  (40 * 16)
+#define D_ACSX                  (40 * 16 + 4)
+#define D_ACSY                  (40 * 16 + 8)
+#define D_ACSZ                  (40 * 16 + 12)
+
+#define FLICK_MSG               (45 * 16 + 4)
+#define FLICK_COUNTER           (45 * 16 + 8)
+#define FLICK_LOWER             (45 * 16 + 12)
+#define FLICK_UPPER             (46 * 16 + 12)
+
+#define D_AUTH_OUT              (992)
+#define D_AUTH_IN               (996)
+#define D_AUTH_A                (1000)
+#define D_AUTH_B                (1004)
+
+#define D_PEDSTD_BP_B           (768 + 0x1C)
+#define D_PEDSTD_HP_A           (768 + 0x78)
+#define D_PEDSTD_HP_B           (768 + 0x7C)
+#define D_PEDSTD_BP_A4          (768 + 0x40)
+#define D_PEDSTD_BP_A3          (768 + 0x44)
+#define D_PEDSTD_BP_A2          (768 + 0x48)
+#define D_PEDSTD_BP_A1          (768 + 0x4C)
+#define D_PEDSTD_INT_THRSH      (768 + 0x68)
+#define D_PEDSTD_CLIP           (768 + 0x6C)
+#define D_PEDSTD_SB             (768 + 0x28)
+#define D_PEDSTD_SB_TIME        (768 + 0x2C)
+#define D_PEDSTD_PEAKTHRSH      (768 + 0x98)
+#define D_PEDSTD_TIML           (768 + 0x2A)
+#define D_PEDSTD_TIMH           (768 + 0x2E)
+#define D_PEDSTD_PEAK           (768 + 0X94)
+#define D_PEDSTD_STEPCTR        (768 + 0x60)
+#define D_PEDSTD_TIMECTR        (964)
+#define D_PEDSTD_DECI           (768 + 0xA0)
+
+#define D_HOST_NO_MOT           (976)
+#define D_ACCEL_BIAS            (660)
+
+#define D_ORIENT_GAP            (76)
+
+#define D_TILT0_H               (48)
+#define D_TILT0_L               (50)
+#define D_TILT1_H               (52)
+#define D_TILT1_L               (54)
+#define D_TILT2_H               (56)
+#define D_TILT2_L               (58)
+#define D_TILT3_H               (60)
+#define D_TILT3_L               (62)
+
+#define DMP_CODE_SIZE           (3062)
+
+static const unsigned char dmp_memory[DMP_CODE_SIZE] = {
+    /* bank # 0 */
+    0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x24, 0x00, 0x00, 0x00, 0x02, 0x00, 0x03, 0x00, 0x00,
+    0x00, 0x65, 0x00, 0x54, 0xff, 0xef, 0x00, 0x00, 0xfa, 0x80, 0x00, 0x0b, 0x12, 0x82, 0x00, 0x01,
+    0x03, 0x0c, 0x30, 0xc3, 0x0e, 0x8c, 0x8c, 0xe9, 0x14, 0xd5, 0x40, 0x02, 0x13, 0x71, 0x0f, 0x8e,
+    0x38, 0x83, 0xf8, 0x83, 0x30, 0x00, 0xf8, 0x83, 0x25, 0x8e, 0xf8, 0x83, 0x30, 0x00, 0xf8, 0x83,
+    0xff, 0xff, 0xff, 0xff, 0x0f, 0xfe, 0xa9, 0xd6, 0x24, 0x00, 0x04, 0x00, 0x1a, 0x82, 0x79, 0xa1,
+    0x00, 0x00, 0x00, 0x3c, 0xff, 0xff, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x38, 0x83, 0x6f, 0xa2,
+    0x00, 0x3e, 0x03, 0x30, 0x40, 0x00, 0x00, 0x00, 0x02, 0xca, 0xe3, 0x09, 0x3e, 0x80, 0x00, 0x00,
+    0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00,
+    0x00, 0x0c, 0x00, 0x00, 0x00, 0x0c, 0x18, 0x6e, 0x00, 0x00, 0x06, 0x92, 0x0a, 0x16, 0xc0, 0xdf,
+    0xff, 0xff, 0x02, 0x56, 0xfd, 0x8c, 0xd3, 0x77, 0xff, 0xe1, 0xc4, 0x96, 0xe0, 0xc5, 0xbe, 0xaa,
+    0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x0b, 0x2b, 0x00, 0x00, 0x16, 0x57, 0x00, 0x00, 0x03, 0x59,
+    0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1d, 0xfa, 0x00, 0x02, 0x6c, 0x1d, 0x00, 0x00, 0x00, 0x00,
+    0x3f, 0xff, 0xdf, 0xeb, 0x00, 0x3e, 0xb3, 0xb6, 0x00, 0x0d, 0x22, 0x78, 0x00, 0x00, 0x2f, 0x3c,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x42, 0xb5, 0x00, 0x00, 0x39, 0xa2, 0x00, 0x00, 0xb3, 0x65,
+    0xd9, 0x0e, 0x9f, 0xc9, 0x1d, 0xcf, 0x4c, 0x34, 0x30, 0x00, 0x00, 0x00, 0x50, 0x00, 0x00, 0x00,
+    0x3b, 0xb6, 0x7a, 0xe8, 0x00, 0x64, 0x00, 0x00, 0x00, 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    /* bank # 1 */
+    0x10, 0x00, 0x00, 0x00, 0x10, 0x00, 0xfa, 0x92, 0x10, 0x00, 0x22, 0x5e, 0x00, 0x0d, 0x22, 0x9f,
+    0x00, 0x01, 0x00, 0x00, 0x00, 0x32, 0x00, 0x00, 0xff, 0x46, 0x00, 0x00, 0x63, 0xd4, 0x00, 0x00,
+    0x10, 0x00, 0x00, 0x00, 0x04, 0xd6, 0x00, 0x00, 0x04, 0xcc, 0x00, 0x00, 0x04, 0xcc, 0x00, 0x00,
+    0x00, 0x00, 0x10, 0x72, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x06, 0x00, 0x02, 0x00, 0x05, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x05, 0x00, 0x64, 0x00, 0x20, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x03, 0x00,
+    0x00, 0x00, 0x00, 0x32, 0xf8, 0x98, 0x00, 0x00, 0xff, 0x65, 0x00, 0x00, 0x83, 0x0f, 0x00, 0x00,
+    0xff, 0x9b, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
+    0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0xb2, 0x6a, 0x00, 0x02, 0x00, 0x00,
+    0x00, 0x01, 0xfb, 0x83, 0x00, 0x68, 0x00, 0x00, 0x00, 0xd9, 0xfc, 0x00, 0x7c, 0xf1, 0xff, 0x83,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x65, 0x00, 0x00, 0x00, 0x64, 0x03, 0xe8, 0x00, 0x64, 0x00, 0x28,
+    0x00, 0x00, 0x00, 0x25, 0x00, 0x00, 0x00, 0x00, 0x16, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
+    0x00, 0x00, 0x10, 0x00, 0x00, 0x2f, 0x00, 0x00, 0x00, 0x00, 0x01, 0xf4, 0x00, 0x00, 0x10, 0x00,
+    /* bank # 2 */
+    0x00, 0x28, 0x00, 0x00, 0xff, 0xff, 0x45, 0x81, 0xff, 0xff, 0xfa, 0x72, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x00, 0x05, 0x00, 0x05, 0xba, 0xc6, 0x00, 0x47, 0x78, 0xa2,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x14,
+    0x00, 0x00, 0x25, 0x4d, 0x00, 0x2f, 0x70, 0x6d, 0x00, 0x00, 0x05, 0xae, 0x00, 0x0c, 0x02, 0xd0,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x64, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x0e,
+    0x00, 0x00, 0x0a, 0xc7, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0xff, 0xff, 0xff, 0x9c,
+    0x00, 0x00, 0x0b, 0x2b, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x64,
+    0xff, 0xe5, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    /* bank # 3 */
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x24, 0x26, 0xd3,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x10, 0x00, 0x96, 0x00, 0x3c,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x0c, 0x0a, 0x4e, 0x68, 0xcd, 0xcf, 0x77, 0x09, 0x50, 0x16, 0x67, 0x59, 0xc6, 0x19, 0xce, 0x82,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x17, 0xd7, 0x84, 0x00, 0x03, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc7, 0x93, 0x8f, 0x9d, 0x1e, 0x1b, 0x1c, 0x19,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x03, 0x18, 0x85, 0x00, 0x00, 0x40, 0x00,
+    0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x67, 0x7d, 0xdf, 0x7e, 0x72, 0x90, 0x2e, 0x55, 0x4c, 0xf6, 0xe6, 0x88,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+
+    /* bank # 4 */
+    0xd8, 0xdc, 0xb4, 0xb8, 0xb0, 0xd8, 0xb9, 0xab, 0xf3, 0xf8, 0xfa, 0xb3, 0xb7, 0xbb, 0x8e, 0x9e,
+    0xae, 0xf1, 0x32, 0xf5, 0x1b, 0xf1, 0xb4, 0xb8, 0xb0, 0x80, 0x97, 0xf1, 0xa9, 0xdf, 0xdf, 0xdf,
+    0xaa, 0xdf, 0xdf, 0xdf, 0xf2, 0xaa, 0xc5, 0xcd, 0xc7, 0xa9, 0x0c, 0xc9, 0x2c, 0x97, 0xf1, 0xa9,
+    0x89, 0x26, 0x46, 0x66, 0xb2, 0x89, 0x99, 0xa9, 0x2d, 0x55, 0x7d, 0xb0, 0xb0, 0x8a, 0xa8, 0x96,
+    0x36, 0x56, 0x76, 0xf1, 0xba, 0xa3, 0xb4, 0xb2, 0x80, 0xc0, 0xb8, 0xa8, 0x97, 0x11, 0xb2, 0x83,
+    0x98, 0xba, 0xa3, 0xf0, 0x24, 0x08, 0x44, 0x10, 0x64, 0x18, 0xb2, 0xb9, 0xb4, 0x98, 0x83, 0xf1,
+    0xa3, 0x29, 0x55, 0x7d, 0xba, 0xb5, 0xb1, 0xa3, 0x83, 0x93, 0xf0, 0x00, 0x28, 0x50, 0xf5, 0xb2,
+    0xb6, 0xaa, 0x83, 0x93, 0x28, 0x54, 0x7c, 0xf1, 0xb9, 0xa3, 0x82, 0x93, 0x61, 0xba, 0xa2, 0xda,
+    0xde, 0xdf, 0xdb, 0x81, 0x9a, 0xb9, 0xae, 0xf5, 0x60, 0x68, 0x70, 0xf1, 0xda, 0xba, 0xa2, 0xdf,
+    0xd9, 0xba, 0xa2, 0xfa, 0xb9, 0xa3, 0x82, 0x92, 0xdb, 0x31, 0xba, 0xa2, 0xd9, 0xba, 0xa2, 0xf8,
+    0xdf, 0x85, 0xa4, 0xd0, 0xc1, 0xbb, 0xad, 0x83, 0xc2, 0xc5, 0xc7, 0xb8, 0xa2, 0xdf, 0xdf, 0xdf,
+    0xba, 0xa0, 0xdf, 0xdf, 0xdf, 0xd8, 0xd8, 0xf1, 0xb8, 0xaa, 0xb3, 0x8d, 0xb4, 0x98, 0x0d, 0x35,
+    0x5d, 0xb2, 0xb6, 0xba, 0xaf, 0x8c, 0x96, 0x19, 0x8f, 0x9f, 0xa7, 0x0e, 0x16, 0x1e, 0xb4, 0x9a,
+    0xb8, 0xaa, 0x87, 0x2c, 0x54, 0x7c, 0xba, 0xa4, 0xb0, 0x8a, 0xb6, 0x91, 0x32, 0x56, 0x76, 0xb2,
+    0x84, 0x94, 0xa4, 0xc8, 0x08, 0xcd, 0xd8, 0xb8, 0xb4, 0xb0, 0xf1, 0x99, 0x82, 0xa8, 0x2d, 0x55,
+    0x7d, 0x98, 0xa8, 0x0e, 0x16, 0x1e, 0xa2, 0x2c, 0x54, 0x7c, 0x92, 0xa4, 0xf0, 0x2c, 0x50, 0x78,
+    /* bank # 5 */
+    0xf1, 0x84, 0xa8, 0x98, 0xc4, 0xcd, 0xfc, 0xd8, 0x0d, 0xdb, 0xa8, 0xfc, 0x2d, 0xf3, 0xd9, 0xba,
+    0xa6, 0xf8, 0xda, 0xba, 0xa6, 0xde, 0xd8, 0xba, 0xb2, 0xb6, 0x86, 0x96, 0xa6, 0xd0, 0xf3, 0xc8,
+    0x41, 0xda, 0xa6, 0xc8, 0xf8, 0xd8, 0xb0, 0xb4, 0xb8, 0x82, 0xa8, 0x92, 0xf5, 0x2c, 0x54, 0x88,
+    0x98, 0xf1, 0x35, 0xd9, 0xf4, 0x18, 0xd8, 0xf1, 0xa2, 0xd0, 0xf8, 0xf9, 0xa8, 0x84, 0xd9, 0xc7,
+    0xdf, 0xf8, 0xf8, 0x83, 0xc5, 0xda, 0xdf, 0x69, 0xdf, 0x83, 0xc1, 0xd8, 0xf4, 0x01, 0x14, 0xf1,
+    0xa8, 0x82, 0x4e, 0xa8, 0x84, 0xf3, 0x11, 0xd1, 0x82, 0xf5, 0xd9, 0x92, 0x28, 0x97, 0x88, 0xf1,
+    0x09, 0xf4, 0x1c, 0x1c, 0xd8, 0x84, 0xa8, 0xf3, 0xc0, 0xf9, 0xd1, 0xd9, 0x97, 0x82, 0xf1, 0x29,
+    0xf4, 0x0d, 0xd8, 0xf3, 0xf9, 0xf9, 0xd1, 0xd9, 0x82, 0xf4, 0xc2, 0x03, 0xd8, 0xde, 0xdf, 0x1a,
+    0xd8, 0xf1, 0xa2, 0xfa, 0xf9, 0xa8, 0x84, 0x98, 0xd9, 0xc7, 0xdf, 0xf8, 0xf8, 0xf8, 0x83, 0xc7,
+    0xda, 0xdf, 0x69, 0xdf, 0xf8, 0x83, 0xc3, 0xd8, 0xf4, 0x01, 0x14, 0xf1, 0x98, 0xa8, 0x82, 0x2e,
+    0xa8, 0x84, 0xf3, 0x11, 0xd1, 0x82, 0xf5, 0xd9, 0x92, 0x50, 0x97, 0x88, 0xf1, 0x09, 0xf4, 0x1c,
+    0xd8, 0x84, 0xa8, 0xf3, 0xc0, 0xf8, 0xf9, 0xd1, 0xd9, 0x97, 0x82, 0xf1, 0x49, 0xf4, 0x0d, 0xd8,
+    0xf3, 0xf9, 0xf9, 0xd1, 0xd9, 0x82, 0xf4, 0xc4, 0x03, 0xd8, 0xde, 0xdf, 0xd8, 0xf1, 0xad, 0x88,
+    0x98, 0xcc, 0xa8, 0x09, 0xf9, 0xd9, 0x82, 0x92, 0xa8, 0xf5, 0x7c, 0xf1, 0x88, 0x3a, 0xcf, 0x94,
+    0x4a, 0x6e, 0x98, 0xdb, 0x69, 0x31, 0xda, 0xad, 0xf2, 0xde, 0xf9, 0xd8, 0x87, 0x95, 0xa8, 0xf2,
+    0x21, 0xd1, 0xda, 0xa5, 0xf9, 0xf4, 0x17, 0xd9, 0xf1, 0xae, 0x8e, 0xd0, 0xc0, 0xc3, 0xae, 0x82,
+    /* bank # 6 */
+    0xc6, 0x84, 0xc3, 0xa8, 0x85, 0x95, 0xc8, 0xa5, 0x88, 0xf2, 0xc0, 0xf1, 0xf4, 0x01, 0x0e, 0xf1,
+    0x8e, 0x9e, 0xa8, 0xc6, 0x3e, 0x56, 0xf5, 0x54, 0xf1, 0x88, 0x72, 0xf4, 0x01, 0x15, 0xf1, 0x98,
+    0x45, 0x85, 0x6e, 0xf5, 0x8e, 0x9e, 0x04, 0x88, 0xf1, 0x42, 0x98, 0x5a, 0x8e, 0x9e, 0x06, 0x88,
+    0x69, 0xf4, 0x01, 0x1c, 0xf1, 0x98, 0x1e, 0x11, 0x08, 0xd0, 0xf5, 0x04, 0xf1, 0x1e, 0x97, 0x02,
+    0x02, 0x98, 0x36, 0x25, 0xdb, 0xf9, 0xd9, 0x85, 0xa5, 0xf3, 0xc1, 0xda, 0x85, 0xa5, 0xf3, 0xdf,
+    0xd8, 0x85, 0x95, 0xa8, 0xf3, 0x09, 0xda, 0xa5, 0xfa, 0xd8, 0x82, 0x92, 0xa8, 0xf5, 0x78, 0xf1,
+    0x88, 0x1a, 0x84, 0x9f, 0x26, 0x88, 0x98, 0x21, 0xda, 0xf4, 0x1d, 0xf3, 0xd8, 0x87, 0x9f, 0x39,
+    0xd1, 0xaf, 0xd9, 0xdf, 0xdf, 0xfb, 0xf9, 0xf4, 0x0c, 0xf3, 0xd8, 0xfa, 0xd0, 0xf8, 0xda, 0xf9,
+    0xf9, 0xd0, 0xdf, 0xd9, 0xf9, 0xd8, 0xf4, 0x0b, 0xd8, 0xf3, 0x87, 0x9f, 0x39, 0xd1, 0xaf, 0xd9,
+    0xdf, 0xdf, 0xf4, 0x1d, 0xf3, 0xd8, 0xfa, 0xfc, 0xa8, 0x69, 0xf9, 0xf9, 0xaf, 0xd0, 0xda, 0xde,
+    0xfa, 0xd9, 0xf8, 0x8f, 0x9f, 0xa8, 0xf1, 0xcc, 0xf3, 0x98, 0xdb, 0x45, 0xd9, 0xaf, 0xdf, 0xd0,
+    0xf8, 0xd8, 0xf1, 0x8f, 0x9f, 0xa8, 0xca, 0xf3, 0x88, 0x09, 0xda, 0xaf, 0x8f, 0xcb, 0xf8, 0xd8,
+    0xf2, 0xad, 0x97, 0x8d, 0x0c, 0xd9, 0xa5, 0xdf, 0xf9, 0xba, 0xa6, 0xf3, 0xfa, 0xf4, 0x12, 0xf2,
+    0xd8, 0x95, 0x0d, 0xd1, 0xd9, 0xba, 0xa6, 0xf3, 0xfa, 0xda, 0xa5, 0xf2, 0xc1, 0xba, 0xa6, 0xf3,
+    0xdf, 0xd8, 0xf1, 0xba, 0xb2, 0xb6, 0x86, 0x96, 0xa6, 0xd0, 0xca, 0xf3, 0x49, 0xda, 0xa6, 0xcb,
+    0xf8, 0xd8, 0xb0, 0xb4, 0xb8, 0xd8, 0xad, 0x84, 0xf2, 0xc0, 0xdf, 0xf1, 0x8f, 0xcb, 0xc3, 0xa8,
+    /* bank # 7 */
+    0xb2, 0xb6, 0x86, 0x96, 0xc8, 0xc1, 0xcb, 0xc3, 0xf3, 0xb0, 0xb4, 0x88, 0x98, 0xa8, 0x21, 0xdb,
+    0x71, 0x8d, 0x9d, 0x71, 0x85, 0x95, 0x21, 0xd9, 0xad, 0xf2, 0xfa, 0xd8, 0x85, 0x97, 0xa8, 0x28,
+    0xd9, 0xf4, 0x08, 0xd8, 0xf2, 0x8d, 0x29, 0xda, 0xf4, 0x05, 0xd9, 0xf2, 0x85, 0xa4, 0xc2, 0xf2,
+    0xd8, 0xa8, 0x8d, 0x94, 0x01, 0xd1, 0xd9, 0xf4, 0x11, 0xf2, 0xd8, 0x87, 0x21, 0xd8, 0xf4, 0x0a,
+    0xd8, 0xf2, 0x84, 0x98, 0xa8, 0xc8, 0x01, 0xd1, 0xd9, 0xf4, 0x11, 0xd8, 0xf3, 0xa4, 0xc8, 0xbb,
+    0xaf, 0xd0, 0xf2, 0xde, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xd8, 0xf1, 0xb8, 0xf6,
+    0xb5, 0xb9, 0xb0, 0x8a, 0x95, 0xa3, 0xde, 0x3c, 0xa3, 0xd9, 0xf8, 0xd8, 0x5c, 0xa3, 0xd9, 0xf8,
+    0xd8, 0x7c, 0xa3, 0xd9, 0xf8, 0xd8, 0xf8, 0xf9, 0xd1, 0xa5, 0xd9, 0xdf, 0xda, 0xfa, 0xd8, 0xb1,
+    0x85, 0x30, 0xf7, 0xd9, 0xde, 0xd8, 0xf8, 0x30, 0xad, 0xda, 0xde, 0xd8, 0xf2, 0xb4, 0x8c, 0x99,
+    0xa3, 0x2d, 0x55, 0x7d, 0xa0, 0x83, 0xdf, 0xdf, 0xdf, 0xb5, 0x91, 0xa0, 0xf6, 0x29, 0xd9, 0xfb,
+    0xd8, 0xa0, 0xfc, 0x29, 0xd9, 0xfa, 0xd8, 0xa0, 0xd0, 0x51, 0xd9, 0xf8, 0xd8, 0xfc, 0x51, 0xd9,
+    0xf9, 0xd8, 0x79, 0xd9, 0xfb, 0xd8, 0xa0, 0xd0, 0xfc, 0x79, 0xd9, 0xfa, 0xd8, 0xa1, 0xf9, 0xf9,
+    0xf9, 0xf9, 0xf9, 0xa0, 0xda, 0xdf, 0xdf, 0xdf, 0xd8, 0xa1, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xac,
+    0xde, 0xf8, 0xad, 0xde, 0x83, 0x93, 0xac, 0x2c, 0x54, 0x7c, 0xf1, 0xa8, 0xdf, 0xdf, 0xdf, 0xf6,
+    0x9d, 0x2c, 0xda, 0xa0, 0xdf, 0xd9, 0xfa, 0xdb, 0x2d, 0xf8, 0xd8, 0xa8, 0x50, 0xda, 0xa0, 0xd0,
+    0xde, 0xd9, 0xd0, 0xf8, 0xf8, 0xf8, 0xdb, 0x55, 0xf8, 0xd8, 0xa8, 0x78, 0xda, 0xa0, 0xd0, 0xdf,
+    /* bank # 8 */
+    0xd9, 0xd0, 0xfa, 0xf8, 0xf8, 0xf8, 0xf8, 0xdb, 0x7d, 0xf8, 0xd8, 0x9c, 0xa8, 0x8c, 0xf5, 0x30,
+    0xdb, 0x38, 0xd9, 0xd0, 0xde, 0xdf, 0xa0, 0xd0, 0xde, 0xdf, 0xd8, 0xa8, 0x48, 0xdb, 0x58, 0xd9,
+    0xdf, 0xd0, 0xde, 0xa0, 0xdf, 0xd0, 0xde, 0xd8, 0xa8, 0x68, 0xdb, 0x70, 0xd9, 0xdf, 0xdf, 0xa0,
+    0xdf, 0xdf, 0xd8, 0xf1, 0xa8, 0x88, 0x90, 0x2c, 0x54, 0x7c, 0x98, 0xa8, 0xd0, 0x5c, 0x38, 0xd1,
+    0xda, 0xf2, 0xae, 0x8c, 0xdf, 0xf9, 0xd8, 0xb0, 0x87, 0xa8, 0xc1, 0xc1, 0xb1, 0x88, 0xa8, 0xc6,
+    0xf9, 0xf9, 0xda, 0x36, 0xd8, 0xa8, 0xf9, 0xda, 0x36, 0xd8, 0xa8, 0xf9, 0xda, 0x36, 0xd8, 0xa8,
+    0xf9, 0xda, 0x36, 0xd8, 0xa8, 0xf9, 0xda, 0x36, 0xd8, 0xf7, 0x8d, 0x9d, 0xad, 0xf8, 0x18, 0xda,
+    0xf2, 0xae, 0xdf, 0xd8, 0xf7, 0xad, 0xfa, 0x30, 0xd9, 0xa4, 0xde, 0xf9, 0xd8, 0xf2, 0xae, 0xde,
+    0xfa, 0xf9, 0x83, 0xa7, 0xd9, 0xc3, 0xc5, 0xc7, 0xf1, 0x88, 0x9b, 0xa7, 0x7a, 0xad, 0xf7, 0xde,
+    0xdf, 0xa4, 0xf8, 0x84, 0x94, 0x08, 0xa7, 0x97, 0xf3, 0x00, 0xae, 0xf2, 0x98, 0x19, 0xa4, 0x88,
+    0xc6, 0xa3, 0x94, 0x88, 0xf6, 0x32, 0xdf, 0xf2, 0x83, 0x93, 0xdb, 0x09, 0xd9, 0xf2, 0xaa, 0xdf,
+    0xd8, 0xd8, 0xae, 0xf8, 0xf9, 0xd1, 0xda, 0xf3, 0xa4, 0xde, 0xa7, 0xf1, 0x88, 0x9b, 0x7a, 0xd8,
+    0xf3, 0x84, 0x94, 0xae, 0x19, 0xf9, 0xda, 0xaa, 0xf1, 0xdf, 0xd8, 0xa8, 0x81, 0xc0, 0xc3, 0xc5,
+    0xc7, 0xa3, 0x92, 0x83, 0xf6, 0x28, 0xad, 0xde, 0xd9, 0xf8, 0xd8, 0xa3, 0x50, 0xad, 0xd9, 0xf8,
+    0xd8, 0xa3, 0x78, 0xad, 0xd9, 0xf8, 0xd8, 0xf8, 0xf9, 0xd1, 0xa1, 0xda, 0xde, 0xc3, 0xc5, 0xc7,
+    0xd8, 0xa1, 0x81, 0x94, 0xf8, 0x18, 0xf2, 0xb0, 0x89, 0xac, 0xc3, 0xc5, 0xc7, 0xf1, 0xd8, 0xb8,
+    /* bank # 9 */
+    0xb4, 0xb0, 0x97, 0x86, 0xa8, 0x31, 0x9b, 0x06, 0x99, 0x07, 0xab, 0x97, 0x28, 0x88, 0x9b, 0xf0,
+    0x0c, 0x20, 0x14, 0x40, 0xb0, 0xb4, 0xb8, 0xf0, 0xa8, 0x8a, 0x9a, 0x28, 0x50, 0x78, 0xb7, 0x9b,
+    0xa8, 0x29, 0x51, 0x79, 0x24, 0x70, 0x59, 0x44, 0x69, 0x38, 0x64, 0x48, 0x31, 0xf1, 0xbb, 0xab,
+    0x88, 0x00, 0x2c, 0x54, 0x7c, 0xf0, 0xb3, 0x8b, 0xb8, 0xa8, 0x04, 0x28, 0x50, 0x78, 0xf1, 0xb0,
+    0x88, 0xb4, 0x97, 0x26, 0xa8, 0x59, 0x98, 0xbb, 0xab, 0xb3, 0x8b, 0x02, 0x26, 0x46, 0x66, 0xb0,
+    0xb8, 0xf0, 0x8a, 0x9c, 0xa8, 0x29, 0x51, 0x79, 0x8b, 0x29, 0x51, 0x79, 0x8a, 0x24, 0x70, 0x59,
+    0x8b, 0x20, 0x58, 0x71, 0x8a, 0x44, 0x69, 0x38, 0x8b, 0x39, 0x40, 0x68, 0x8a, 0x64, 0x48, 0x31,
+    0x8b, 0x30, 0x49, 0x60, 0x88, 0xf1, 0xac, 0x00, 0x2c, 0x54, 0x7c, 0xf0, 0x8c, 0xa8, 0x04, 0x28,
+    0x50, 0x78, 0xf1, 0x88, 0x97, 0x26, 0xa8, 0x59, 0x98, 0xac, 0x8c, 0x02, 0x26, 0x46, 0x66, 0xf0,
+    0x89, 0x9c, 0xa8, 0x29, 0x51, 0x79, 0x24, 0x70, 0x59, 0x44, 0x69, 0x38, 0x64, 0x48, 0x31, 0xa9,
+    0x88, 0x09, 0x20, 0x59, 0x70, 0xab, 0x11, 0x38, 0x40, 0x69, 0xa8, 0x19, 0x31, 0x48, 0x60, 0x8c,
+    0xa8, 0x3c, 0x41, 0x5c, 0x20, 0x7c, 0x00, 0xf1, 0x87, 0x98, 0x19, 0x86, 0xa8, 0x6e, 0x76, 0x7e,
+    0xa9, 0x99, 0x88, 0x2d, 0x55, 0x7d, 0xd8, 0xb1, 0xb5, 0xb9, 0xa3, 0xdf, 0xdf, 0xdf, 0xae, 0xd0,
+    0xdf, 0xaa, 0xd0, 0xde, 0xf2, 0xab, 0xf8, 0xf9, 0xd9, 0xb0, 0x87, 0xc4, 0xaa, 0xf1, 0xdf, 0xdf,
+    0xbb, 0xaf, 0xdf, 0xdf, 0xb9, 0xd8, 0xb1, 0xf1, 0xa3, 0x97, 0x8e, 0x60, 0xdf, 0xb0, 0x84, 0xf2,
+    0xc8, 0xf8, 0xf9, 0xd9, 0xde, 0xd8, 0x93, 0x85, 0xf1, 0x4a, 0xb1, 0x83, 0xa3, 0x08, 0xb5, 0x83,
+    /* bank # 10 */
+    0x9a, 0x08, 0x10, 0xb7, 0x9f, 0x10, 0xd8, 0xf1, 0xb0, 0xba, 0xae, 0xb0, 0x8a, 0xc2, 0xb2, 0xb6,
+    0x8e, 0x9e, 0xf1, 0xfb, 0xd9, 0xf4, 0x1d, 0xd8, 0xf9, 0xd9, 0x0c, 0xf1, 0xd8, 0xf8, 0xf8, 0xad,
+    0x61, 0xd9, 0xae, 0xfb, 0xd8, 0xf4, 0x0c, 0xf1, 0xd8, 0xf8, 0xf8, 0xad, 0x19, 0xd9, 0xae, 0xfb,
+    0xdf, 0xd8, 0xf4, 0x16, 0xf1, 0xd8, 0xf8, 0xad, 0x8d, 0x61, 0xd9, 0xf4, 0xf4, 0xac, 0xf5, 0x9c,
+    0x9c, 0x8d, 0xdf, 0x2b, 0xba, 0xb6, 0xae, 0xfa, 0xf8, 0xf4, 0x0b, 0xd8, 0xf1, 0xae, 0xd0, 0xf8,
+    0xad, 0x51, 0xda, 0xae, 0xfa, 0xf8, 0xf1, 0xd8, 0xb9, 0xb1, 0xb6, 0xa3, 0x83, 0x9c, 0x08, 0xb9,
+    0xb1, 0x83, 0x9a, 0xb5, 0xaa, 0xc0, 0xfd, 0x30, 0x83, 0xb7, 0x9f, 0x10, 0xb5, 0x8b, 0x93, 0xf2,
+    0x02, 0x02, 0xd1, 0xab, 0xda, 0xde, 0xd8, 0xf1, 0xb0, 0x80, 0xba, 0xab, 0xc0, 0xc3, 0xb2, 0x84,
+    0xc1, 0xc3, 0xd8, 0xb1, 0xb9, 0xf3, 0x8b, 0xa3, 0x91, 0xb6, 0x09, 0xb4, 0xd9, 0xab, 0xde, 0xb0,
+    0x87, 0x9c, 0xb9, 0xa3, 0xdd, 0xf1, 0xb3, 0x8b, 0x8b, 0x8b, 0x8b, 0x8b, 0xb0, 0x87, 0xa3, 0xa3,
+    0xa3, 0xa3, 0xb2, 0x8b, 0xb6, 0x9b, 0xf2, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
+    0xa3, 0xf1, 0xb0, 0x87, 0xb5, 0x9a, 0xa3, 0xf3, 0x9b, 0xa3, 0xa3, 0xdc, 0xba, 0xac, 0xdf, 0xb9,
+    0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3, 0xa3,
+    0xd8, 0xd8, 0xd8, 0xbb, 0xb3, 0xb7, 0xf1, 0xaa, 0xf9, 0xda, 0xff, 0xd9, 0x80, 0x9a, 0xaa, 0x28,
+    0xb4, 0x80, 0x98, 0xa7, 0x20, 0xb7, 0x97, 0x87, 0xa8, 0x66, 0x88, 0xf0, 0x79, 0x51, 0xf1, 0x90,
+    0x2c, 0x87, 0x0c, 0xa7, 0x81, 0x97, 0x62, 0x93, 0xf0, 0x71, 0x71, 0x60, 0x85, 0x94, 0x01, 0x29,
+    /* bank # 11 */
+    0x51, 0x79, 0x90, 0xa5, 0xf1, 0x28, 0x4c, 0x6c, 0x87, 0x0c, 0x95, 0x18, 0x85, 0x78, 0xa3, 0x83,
+    0x90, 0x28, 0x4c, 0x6c, 0x88, 0x6c, 0xd8, 0xf3, 0xa2, 0x82, 0x00, 0xf2, 0x10, 0xa8, 0x92, 0x19,
+    0x80, 0xa2, 0xf2, 0xd9, 0x26, 0xd8, 0xf1, 0x88, 0xa8, 0x4d, 0xd9, 0x48, 0xd8, 0x96, 0xa8, 0x39,
+    0x80, 0xd9, 0x3c, 0xd8, 0x95, 0x80, 0xa8, 0x39, 0xa6, 0x86, 0x98, 0xd9, 0x2c, 0xda, 0x87, 0xa7,
+    0x2c, 0xd8, 0xa8, 0x89, 0x95, 0x19, 0xa9, 0x80, 0xd9, 0x38, 0xd8, 0xa8, 0x89, 0x39, 0xa9, 0x80,
+    0xda, 0x3c, 0xd8, 0xa8, 0x2e, 0xa8, 0x39, 0x90, 0xd9, 0x0c, 0xd8, 0xa8, 0x95, 0x31, 0x98, 0xd9,
+    0x0c, 0xd8, 0xa8, 0x09, 0xd9, 0xff, 0xd8, 0x01, 0xda, 0xff, 0xd8, 0x95, 0x39, 0xa9, 0xda, 0x26,
+    0xff, 0xd8, 0x90, 0xa8, 0x0d, 0x89, 0x99, 0xa8, 0x10, 0x80, 0x98, 0x21, 0xda, 0x2e, 0xd8, 0x89,
+    0x99, 0xa8, 0x31, 0x80, 0xda, 0x2e, 0xd8, 0xa8, 0x86, 0x96, 0x31, 0x80, 0xda, 0x2e, 0xd8, 0xa8,
+    0x87, 0x31, 0x80, 0xda, 0x2e, 0xd8, 0xa8, 0x82, 0x92, 0xf3, 0x41, 0x80, 0xf1, 0xd9, 0x2e, 0xd8,
+    0xa8, 0x82, 0xf3, 0x19, 0x80, 0xf1, 0xd9, 0x2e, 0xd8, 0x82, 0xac, 0xf3, 0xc0, 0xa2, 0x80, 0x22,
+    0xf1, 0xa6, 0x2e, 0xa7, 0x2e, 0xa9, 0x22, 0x98, 0xa8, 0x29, 0xda, 0xac, 0xde, 0xff, 0xd8, 0xa2,
+    0xf2, 0x2a, 0xf1, 0xa9, 0x2e, 0x82, 0x92, 0xa8, 0xf2, 0x31, 0x80, 0xa6, 0x96, 0xf1, 0xd9, 0x00,
+    0xac, 0x8c, 0x9c, 0x0c, 0x30, 0xac, 0xde, 0xd0, 0xde, 0xff, 0xd8, 0x8c, 0x9c, 0xac, 0xd0, 0x10,
+    0xac, 0xde, 0x80, 0x92, 0xa2, 0xf2, 0x4c, 0x82, 0xa8, 0xf1, 0xca, 0xf2, 0x35, 0xf1, 0x96, 0x88,
+    0xa6, 0xd9, 0x00, 0xd8, 0xf1, 0xff
+};
+
+static const unsigned short sStartAddress = 0x0400;
+
+/* END OF SECTION COPIED FROM dmpDefaultMPU6050.c */
+
+#define INT_SRC_TAP             (0x01)
+#define INT_SRC_ANDROID_ORIENT  (0x08)
+
+#define DMP_FEATURE_SEND_ANY_GYRO   (DMP_FEATURE_SEND_RAW_GYRO | \
+                                     DMP_FEATURE_SEND_CAL_GYRO)
+
+#define MAX_PACKET_LENGTH   (32)
+
+#define DMP_SAMPLE_RATE     (200)
+#define GYRO_SF             (46850825LL * 200 / DMP_SAMPLE_RATE)
+
+#define FIFO_CORRUPTION_CHECK
+#ifdef FIFO_CORRUPTION_CHECK
+#define QUAT_ERROR_THRESH       (1L<<24)
+#define QUAT_MAG_SQ_NORMALIZED  (1L<<28)
+#define QUAT_MAG_SQ_MIN         (QUAT_MAG_SQ_NORMALIZED - QUAT_ERROR_THRESH)
+#define QUAT_MAG_SQ_MAX         (QUAT_MAG_SQ_NORMALIZED + QUAT_ERROR_THRESH)
+#endif
+
+struct dmp_s {
+    void (*tap_cb)(unsigned char count, unsigned char direction);
+    void (*android_orient_cb)(unsigned char orientation);
+    unsigned short orient;
+    unsigned short feature_mask;
+    unsigned short fifo_rate;
+    unsigned char packet_length;
+};
+
+static struct dmp_s dmp = {
+    .tap_cb = NULL,
+    .android_orient_cb = NULL,
+    .orient = 0,
+    .feature_mask = 0,
+    .fifo_rate = 0,
+    .packet_length = 0
+};
+
+/**
+ *  @brief  Load the DMP with this image.
+ *  @return 0 if successful.
+ */
+int dmp_load_motion_driver_firmware(void)
+{
+    return mpu_load_firmware(DMP_CODE_SIZE, dmp_memory, sStartAddress,
+        DMP_SAMPLE_RATE);
+}
+
+/**
+ *  @brief      Push gyro and accel orientation to the DMP.
+ *  The orientation is represented here as the output of
+ *  @e inv_orientation_matrix_to_scalar.
+ *  @param[in]  orient  Gyro and accel orientation in body frame.
+ *  @return     0 if successful.
+ */
+int dmp_set_orientation(unsigned short orient)
+{
+    unsigned char gyro_regs[3], accel_regs[3];
+    const unsigned char gyro_axes[3] = {DINA4C, DINACD, DINA6C};
+    const unsigned char accel_axes[3] = {DINA0C, DINAC9, DINA2C};
+    const unsigned char gyro_sign[3] = {DINA36, DINA56, DINA76};
+    const unsigned char accel_sign[3] = {DINA26, DINA46, DINA66};
+
+    gyro_regs[0] = gyro_axes[orient & 3];
+    gyro_regs[1] = gyro_axes[(orient >> 3) & 3];
+    gyro_regs[2] = gyro_axes[(orient >> 6) & 3];
+    accel_regs[0] = accel_axes[orient & 3];
+    accel_regs[1] = accel_axes[(orient >> 3) & 3];
+    accel_regs[2] = accel_axes[(orient >> 6) & 3];
+
+    /* Chip-to-body, axes only. */
+    if (mpu_write_mem(FCFG_1, 3, gyro_regs))
+        return -1;
+    if (mpu_write_mem(FCFG_2, 3, accel_regs))
+        return -1;
+
+    memcpy(gyro_regs, gyro_sign, 3);
+    memcpy(accel_regs, accel_sign, 3);
+    if (orient & 4) {
+        gyro_regs[0] |= 1;
+        accel_regs[0] |= 1;
+    }
+    if (orient & 0x20) {
+        gyro_regs[1] |= 1;
+        accel_regs[1] |= 1;
+    }
+    if (orient & 0x100) {
+        gyro_regs[2] |= 1;
+        accel_regs[2] |= 1;
+    }
+
+    /* Chip-to-body, sign only. */
+    if (mpu_write_mem(FCFG_3, 3, gyro_regs))
+        return -1;
+    if (mpu_write_mem(FCFG_7, 3, accel_regs))
+        return -1;
+    dmp.orient = orient;
+    return 0;
+}
+
+/**
+ *  @brief      Push gyro biases to the DMP.
+ *  Because the gyro integration is handled in the DMP, any gyro biases
+ *  calculated by the MPL should be pushed down to DMP memory to remove
+ *  3-axis quaternion drift.
+ *  \n NOTE: If the DMP-based gyro calibration is enabled, the DMP will
+ *  overwrite the biases written to this location once a new one is computed.
+ *  @param[in]  bias    Gyro biases in q16.
+ *  @return     0 if successful.
+ */
+int dmp_set_gyro_bias(long *bias)
+{
+    long gyro_bias_body[3];
+    unsigned char regs[4];
+
+    gyro_bias_body[0] = bias[dmp.orient & 3];
+    if (dmp.orient & 4)
+        gyro_bias_body[0] *= -1;
+    gyro_bias_body[1] = bias[(dmp.orient >> 3) & 3];
+    if (dmp.orient & 0x20)
+        gyro_bias_body[1] *= -1;
+    gyro_bias_body[2] = bias[(dmp.orient >> 6) & 3];
+    if (dmp.orient & 0x100)
+        gyro_bias_body[2] *= -1;
+
+#ifdef EMPL_NO_64BIT
+    gyro_bias_body[0] = (long)(((float)gyro_bias_body[0] * GYRO_SF) / 1073741824.f);
+    gyro_bias_body[1] = (long)(((float)gyro_bias_body[1] * GYRO_SF) / 1073741824.f);
+    gyro_bias_body[2] = (long)(((float)gyro_bias_body[2] * GYRO_SF) / 1073741824.f);
+#else
+    gyro_bias_body[0] = (long)(((long long)gyro_bias_body[0] * GYRO_SF) >> 30);
+    gyro_bias_body[1] = (long)(((long long)gyro_bias_body[1] * GYRO_SF) >> 30);
+    gyro_bias_body[2] = (long)(((long long)gyro_bias_body[2] * GYRO_SF) >> 30);
+#endif
+
+    regs[0] = (unsigned char)((gyro_bias_body[0] >> 24) & 0xFF);
+    regs[1] = (unsigned char)((gyro_bias_body[0] >> 16) & 0xFF);
+    regs[2] = (unsigned char)((gyro_bias_body[0] >> 8) & 0xFF);
+    regs[3] = (unsigned char)(gyro_bias_body[0] & 0xFF);
+    if (mpu_write_mem(D_EXT_GYRO_BIAS_X, 4, regs))
+        return -1;
+
+    regs[0] = (unsigned char)((gyro_bias_body[1] >> 24) & 0xFF);
+    regs[1] = (unsigned char)((gyro_bias_body[1] >> 16) & 0xFF);
+    regs[2] = (unsigned char)((gyro_bias_body[1] >> 8) & 0xFF);
+    regs[3] = (unsigned char)(gyro_bias_body[1] & 0xFF);
+    if (mpu_write_mem(D_EXT_GYRO_BIAS_Y, 4, regs))
+        return -1;
+
+    regs[0] = (unsigned char)((gyro_bias_body[2] >> 24) & 0xFF);
+    regs[1] = (unsigned char)((gyro_bias_body[2] >> 16) & 0xFF);
+    regs[2] = (unsigned char)((gyro_bias_body[2] >> 8) & 0xFF);
+    regs[3] = (unsigned char)(gyro_bias_body[2] & 0xFF);
+    return mpu_write_mem(D_EXT_GYRO_BIAS_Z, 4, regs);
+}
+
+/**
+ *  @brief      Push accel biases to the DMP.
+ *  These biases will be removed from the DMP 6-axis quaternion.
+ *  @param[in]  bias    Accel biases in q16.
+ *  @return     0 if successful.
+ */
+int dmp_set_accel_bias(long *bias)
+{
+    long accel_bias_body[3];
+    unsigned char regs[12];
+    long long accel_sf;
+    unsigned short accel_sens;
+
+    mpu_get_accel_sens(&accel_sens);
+    accel_sf = (long long)accel_sens << 15;
+    __no_operation();
+
+    accel_bias_body[0] = bias[dmp.orient & 3];
+    if (dmp.orient & 4)
+        accel_bias_body[0] *= -1;
+    accel_bias_body[1] = bias[(dmp.orient >> 3) & 3];
+    if (dmp.orient & 0x20)
+        accel_bias_body[1] *= -1;
+    accel_bias_body[2] = bias[(dmp.orient >> 6) & 3];
+    if (dmp.orient & 0x100)
+        accel_bias_body[2] *= -1;
+
+#ifdef EMPL_NO_64BIT
+    accel_bias_body[0] = (long)(((float)accel_bias_body[0] * accel_sf) / 1073741824.f);
+    accel_bias_body[1] = (long)(((float)accel_bias_body[1] * accel_sf) / 1073741824.f);
+    accel_bias_body[2] = (long)(((float)accel_bias_body[2] * accel_sf) / 1073741824.f);
+#else
+    accel_bias_body[0] = (long)(((long long)accel_bias_body[0] * accel_sf) >> 30);
+    accel_bias_body[1] = (long)(((long long)accel_bias_body[1] * accel_sf) >> 30);
+    accel_bias_body[2] = (long)(((long long)accel_bias_body[2] * accel_sf) >> 30);
+#endif
+
+    regs[0] = (unsigned char)((accel_bias_body[0] >> 24) & 0xFF);
+    regs[1] = (unsigned char)((accel_bias_body[0] >> 16) & 0xFF);
+    regs[2] = (unsigned char)((accel_bias_body[0] >> 8) & 0xFF);
+    regs[3] = (unsigned char)(accel_bias_body[0] & 0xFF);
+    regs[4] = (unsigned char)((accel_bias_body[1] >> 24) & 0xFF);
+    regs[5] = (unsigned char)((accel_bias_body[1] >> 16) & 0xFF);
+    regs[6] = (unsigned char)((accel_bias_body[1] >> 8) & 0xFF);
+    regs[7] = (unsigned char)(accel_bias_body[1] & 0xFF);
+    regs[8] = (unsigned char)((accel_bias_body[2] >> 24) & 0xFF);
+    regs[9] = (unsigned char)((accel_bias_body[2] >> 16) & 0xFF);
+    regs[10] = (unsigned char)((accel_bias_body[2] >> 8) & 0xFF);
+    regs[11] = (unsigned char)(accel_bias_body[2] & 0xFF);
+    return mpu_write_mem(D_ACCEL_BIAS, 12, regs);
+}
+
+/**
+ *  @brief      Set DMP output rate.
+ *  Only used when DMP is on.
+ *  @param[in]  rate    Desired fifo rate (Hz).
+ *  @return     0 if successful.
+ */
+int dmp_set_fifo_rate(unsigned short rate)
+{
+    const unsigned char regs_end[12] = {DINAFE, DINAF2, DINAAB,
+        0xc4, DINAAA, DINAF1, DINADF, DINADF, 0xBB, 0xAF, DINADF, DINADF};
+    unsigned short div;
+    unsigned char tmp[8];
+
+    if (rate > DMP_SAMPLE_RATE)
+        return -1;
+    div = DMP_SAMPLE_RATE / rate - 1;
+    tmp[0] = (unsigned char)((div >> 8) & 0xFF);
+    tmp[1] = (unsigned char)(div & 0xFF);
+    if (mpu_write_mem(D_0_22, 2, tmp))
+        return -1;
+    if (mpu_write_mem(CFG_6, 12, (unsigned char*)regs_end))
+        return -1;
+
+    dmp.fifo_rate = rate;
+    return 0;
+}
+
+/**
+ *  @brief      Get DMP output rate.
+ *  @param[out] rate    Current fifo rate (Hz).
+ *  @return     0 if successful.
+ */
+int dmp_get_fifo_rate(unsigned short *rate)
+{
+    rate[0] = dmp.fifo_rate;
+    return 0;
+}
+
+/**
+ *  @brief      Set tap threshold for a specific axis.
+ *  @param[in]  axis    1, 2, and 4 for XYZ accel, respectively.
+ *  @param[in]  thresh  Tap threshold, in mg/ms.
+ *  @return     0 if successful.
+ */
+int dmp_set_tap_thresh(unsigned char axis, unsigned short thresh)
+{
+    unsigned char tmp[4], accel_fsr;
+    float scaled_thresh;
+    unsigned short dmp_thresh, dmp_thresh_2;
+    if (!(axis & TAP_XYZ) || thresh > 1600)
+        return -1;
+
+    scaled_thresh = (float)thresh / DMP_SAMPLE_RATE;
+
+    mpu_get_accel_fsr(&accel_fsr);
+    switch (accel_fsr) {
+    case 2:
+        dmp_thresh = (unsigned short)(scaled_thresh * 16384);
+        /* dmp_thresh * 0.75 */
+        dmp_thresh_2 = (unsigned short)(scaled_thresh * 12288);
+        break;
+    case 4:
+        dmp_thresh = (unsigned short)(scaled_thresh * 8192);
+        /* dmp_thresh * 0.75 */
+        dmp_thresh_2 = (unsigned short)(scaled_thresh * 6144);
+        break;
+    case 8:
+        dmp_thresh = (unsigned short)(scaled_thresh * 4096);
+        /* dmp_thresh * 0.75 */
+        dmp_thresh_2 = (unsigned short)(scaled_thresh * 3072);
+        break;
+    case 16:
+        dmp_thresh = (unsigned short)(scaled_thresh * 2048);
+        /* dmp_thresh * 0.75 */
+        dmp_thresh_2 = (unsigned short)(scaled_thresh * 1536);
+        break;
+    default:
+        return -1;
+    }
+    tmp[0] = (unsigned char)(dmp_thresh >> 8);
+    tmp[1] = (unsigned char)(dmp_thresh & 0xFF);
+    tmp[2] = (unsigned char)(dmp_thresh_2 >> 8);
+    tmp[3] = (unsigned char)(dmp_thresh_2 & 0xFF);
+
+    if (axis & TAP_X) {
+        if (mpu_write_mem(DMP_TAP_THX, 2, tmp))
+            return -1;
+        if (mpu_write_mem(D_1_36, 2, tmp+2))
+            return -1;
+    }
+    if (axis & TAP_Y) {
+        if (mpu_write_mem(DMP_TAP_THY, 2, tmp))
+            return -1;
+        if (mpu_write_mem(D_1_40, 2, tmp+2))
+            return -1;
+    }
+    if (axis & TAP_Z) {
+        if (mpu_write_mem(DMP_TAP_THZ, 2, tmp))
+            return -1;
+        if (mpu_write_mem(D_1_44, 2, tmp+2))
+            return -1;
+    }
+    return 0;
+}
+
+/**
+ *  @brief      Set which axes will register a tap.
+ *  @param[in]  axis    1, 2, and 4 for XYZ, respectively.
+ *  @return     0 if successful.
+ */
+int dmp_set_tap_axes(unsigned char axis)
+{
+    unsigned char tmp = 0;
+
+    if (axis & TAP_X)
+        tmp |= 0x30;
+    if (axis & TAP_Y)
+        tmp |= 0x0C;
+    if (axis & TAP_Z)
+        tmp |= 0x03;
+    return mpu_write_mem(D_1_72, 1, &tmp);
+}
+
+/**
+ *  @brief      Set minimum number of taps needed for an interrupt.
+ *  @param[in]  min_taps    Minimum consecutive taps (1-4).
+ *  @return     0 if successful.
+ */
+int dmp_set_tap_count(unsigned char min_taps)
+{
+    unsigned char tmp;
+
+    if (min_taps < 1)
+        min_taps = 1;
+    else if (min_taps > 4)
+        min_taps = 4;
+
+    tmp = min_taps - 1;
+    return mpu_write_mem(D_1_79, 1, &tmp);
+}
+
+/**
+ *  @brief      Set length between valid taps.
+ *  @param[in]  time    Milliseconds between taps.
+ *  @return     0 if successful.
+ */
+int dmp_set_tap_time(unsigned short time)
+{
+    unsigned short dmp_time;
+    unsigned char tmp[2];
+
+    dmp_time = time / (1000 / DMP_SAMPLE_RATE);
+    tmp[0] = (unsigned char)(dmp_time >> 8);
+    tmp[1] = (unsigned char)(dmp_time & 0xFF);
+    return mpu_write_mem(DMP_TAPW_MIN, 2, tmp);
+}
+
+/**
+ *  @brief      Set max time between taps to register as a multi-tap.
+ *  @param[in]  time    Max milliseconds between taps.
+ *  @return     0 if successful.
+ */
+int dmp_set_tap_time_multi(unsigned short time)
+{
+    unsigned short dmp_time;
+    unsigned char tmp[2];
+
+    dmp_time = time / (1000 / DMP_SAMPLE_RATE);
+    tmp[0] = (unsigned char)(dmp_time >> 8);
+    tmp[1] = (unsigned char)(dmp_time & 0xFF);
+    return mpu_write_mem(D_1_218, 2, tmp);
+}
+
+/**
+ *  @brief      Set shake rejection threshold.
+ *  If the DMP detects a gyro sample larger than @e thresh, taps are rejected.
+ *  @param[in]  sf      Gyro scale factor.
+ *  @param[in]  thresh  Gyro threshold in dps.
+ *  @return     0 if successful.
+ */
+int dmp_set_shake_reject_thresh(long sf, unsigned short thresh)
+{
+    unsigned char tmp[4];
+    long thresh_scaled = sf / 1000 * thresh;
+    tmp[0] = (unsigned char)(((long)thresh_scaled >> 24) & 0xFF);
+    tmp[1] = (unsigned char)(((long)thresh_scaled >> 16) & 0xFF);
+    tmp[2] = (unsigned char)(((long)thresh_scaled >> 8) & 0xFF);
+    tmp[3] = (unsigned char)((long)thresh_scaled & 0xFF);
+    return mpu_write_mem(D_1_92, 4, tmp);
+}
+
+/**
+ *  @brief      Set shake rejection time.
+ *  Sets the length of time that the gyro must be outside of the threshold set
+ *  by @e gyro_set_shake_reject_thresh before taps are rejected. A mandatory
+ *  60 ms is added to this parameter.
+ *  @param[in]  time    Time in milliseconds.
+ *  @return     0 if successful.
+ */
+int dmp_set_shake_reject_time(unsigned short time)
+{
+    unsigned char tmp[2];
+
+    time /= (1000 / DMP_SAMPLE_RATE);
+    tmp[0] = time >> 8;
+    tmp[1] = time & 0xFF;
+    return mpu_write_mem(D_1_90,2,tmp);
+}
+
+/**
+ *  @brief      Set shake rejection timeout.
+ *  Sets the length of time after a shake rejection that the gyro must stay
+ *  inside of the threshold before taps can be detected again. A mandatory
+ *  60 ms is added to this parameter.
+ *  @param[in]  time    Time in milliseconds.
+ *  @return     0 if successful.
+ */
+int dmp_set_shake_reject_timeout(unsigned short time)
+{
+    unsigned char tmp[2];
+
+    time /= (1000 / DMP_SAMPLE_RATE);
+    tmp[0] = time >> 8;
+    tmp[1] = time & 0xFF;
+    return mpu_write_mem(D_1_88,2,tmp);
+}
+
+/**
+ *  @brief      Get current step count.
+ *  @param[out] count   Number of steps detected.
+ *  @return     0 if successful.
+ */
+int dmp_get_pedometer_step_count(unsigned long *count)
+{
+    unsigned char tmp[4];
+    if (!count)
+        return -1;
+
+    if (mpu_read_mem(D_PEDSTD_STEPCTR, 4, tmp))
+        return -1;
+
+    count[0] = ((unsigned long)tmp[0] << 24) | ((unsigned long)tmp[1] << 16) |
+        ((unsigned long)tmp[2] << 8) | tmp[3];
+    return 0;
+}
+
+/**
+ *  @brief      Overwrite current step count.
+ *  WARNING: This function writes to DMP memory and could potentially encounter
+ *  a race condition if called while the pedometer is enabled.
+ *  @param[in]  count   New step count.
+ *  @return     0 if successful.
+ */
+int dmp_set_pedometer_step_count(unsigned long count)
+{
+    unsigned char tmp[4];
+
+    tmp[0] = (unsigned char)((count >> 24) & 0xFF);
+    tmp[1] = (unsigned char)((count >> 16) & 0xFF);
+    tmp[2] = (unsigned char)((count >> 8) & 0xFF);
+    tmp[3] = (unsigned char)(count & 0xFF);
+    return mpu_write_mem(D_PEDSTD_STEPCTR, 4, tmp);
+}
+
+/**
+ *  @brief      Get duration of walking time.
+ *  @param[in]  time    Walk time in milliseconds.
+ *  @return     0 if successful.
+ */
+int dmp_get_pedometer_walk_time(unsigned long *time)
+{
+    unsigned char tmp[4];
+    if (!time)
+        return -1;
+
+    if (mpu_read_mem(D_PEDSTD_TIMECTR, 4, tmp))
+        return -1;
+
+    time[0] = (((unsigned long)tmp[0] << 24) | ((unsigned long)tmp[1] << 16) |
+        ((unsigned long)tmp[2] << 8) | tmp[3]) * 20;
+    return 0;
+}
+
+/**
+ *  @brief      Overwrite current walk time.
+ *  WARNING: This function writes to DMP memory and could potentially encounter
+ *  a race condition if called while the pedometer is enabled.
+ *  @param[in]  time    New walk time in milliseconds.
+ */
+int dmp_set_pedometer_walk_time(unsigned long time)
+{
+    unsigned char tmp[4];
+
+    time /= 20;
+
+    tmp[0] = (unsigned char)((time >> 24) & 0xFF);
+    tmp[1] = (unsigned char)((time >> 16) & 0xFF);
+    tmp[2] = (unsigned char)((time >> 8) & 0xFF);
+    tmp[3] = (unsigned char)(time & 0xFF);
+    return mpu_write_mem(D_PEDSTD_TIMECTR, 4, tmp);
+}
+
+/**
+ *  @brief      Enable DMP features.
+ *  The following \#define's are used in the input mask:
+ *  \n DMP_FEATURE_TAP
+ *  \n DMP_FEATURE_ANDROID_ORIENT
+ *  \n DMP_FEATURE_LP_QUAT
+ *  \n DMP_FEATURE_6X_LP_QUAT
+ *  \n DMP_FEATURE_GYRO_CAL
+ *  \n DMP_FEATURE_SEND_RAW_ACCEL
+ *  \n DMP_FEATURE_SEND_RAW_GYRO
+ *  \n NOTE: DMP_FEATURE_LP_QUAT and DMP_FEATURE_6X_LP_QUAT are mutually
+ *  exclusive.
+ *  \n NOTE: DMP_FEATURE_SEND_RAW_GYRO and DMP_FEATURE_SEND_CAL_GYRO are also
+ *  mutually exclusive.
+ *  @param[in]  mask    Mask of features to enable.
+ *  @return     0 if successful.
+ */
+int dmp_enable_feature(unsigned short mask)
+{
+    unsigned char tmp[10];
+
+    /* TODO: All of these settings can probably be integrated into the default
+     * DMP image.
+     */
+    /* Set integration scale factor. */
+    tmp[0] = (unsigned char)((GYRO_SF >> 24) & 0xFF);
+    tmp[1] = (unsigned char)((GYRO_SF >> 16) & 0xFF);
+    tmp[2] = (unsigned char)((GYRO_SF >> 8) & 0xFF);
+    tmp[3] = (unsigned char)(GYRO_SF & 0xFF);
+    mpu_write_mem(D_0_104, 4, tmp);
+
+    /* Send sensor data to the FIFO. */
+    tmp[0] = 0xA3;
+    if (mask & DMP_FEATURE_SEND_RAW_ACCEL) {
+        tmp[1] = 0xC0;
+        tmp[2] = 0xC8;
+        tmp[3] = 0xC2;
+    } else {
+        tmp[1] = 0xA3;
+        tmp[2] = 0xA3;
+        tmp[3] = 0xA3;
+    }
+    if (mask & DMP_FEATURE_SEND_ANY_GYRO) {
+        tmp[4] = 0xC4;
+        tmp[5] = 0xCC;
+        tmp[6] = 0xC6;
+    } else {
+        tmp[4] = 0xA3;
+        tmp[5] = 0xA3;
+        tmp[6] = 0xA3;
+    }
+    tmp[7] = 0xA3;
+    tmp[8] = 0xA3;
+    tmp[9] = 0xA3;
+    mpu_write_mem(CFG_15,10,tmp);
+
+    /* Send gesture data to the FIFO. */
+    if (mask & (DMP_FEATURE_TAP | DMP_FEATURE_ANDROID_ORIENT))
+        tmp[0] = DINA20;
+    else
+        tmp[0] = 0xD8;
+    mpu_write_mem(CFG_27,1,tmp);
+
+    if (mask & DMP_FEATURE_GYRO_CAL)
+        dmp_enable_gyro_cal(1);
+    else
+        dmp_enable_gyro_cal(0);
+
+    if (mask & DMP_FEATURE_SEND_ANY_GYRO) {
+        if (mask & DMP_FEATURE_SEND_CAL_GYRO) {
+            tmp[0] = 0xB2;
+            tmp[1] = 0x8B;
+            tmp[2] = 0xB6;
+            tmp[3] = 0x9B;
+        } else {
+            tmp[0] = DINAC0;
+            tmp[1] = DINA80;
+            tmp[2] = DINAC2;
+            tmp[3] = DINA90;
+        }
+        mpu_write_mem(CFG_GYRO_RAW_DATA, 4, tmp);
+    }
+
+    if (mask & DMP_FEATURE_TAP) {
+        /* Enable tap. */
+        tmp[0] = 0xF8;
+        mpu_write_mem(CFG_20, 1, tmp);
+        dmp_set_tap_thresh(TAP_XYZ, 250);
+        dmp_set_tap_axes(TAP_XYZ);
+        dmp_set_tap_count(1);
+        dmp_set_tap_time(100);
+        dmp_set_tap_time_multi(500);
+
+        dmp_set_shake_reject_thresh(GYRO_SF, 200);
+        dmp_set_shake_reject_time(40);
+        dmp_set_shake_reject_timeout(10);
+    } else {
+        tmp[0] = 0xD8;
+        mpu_write_mem(CFG_20, 1, tmp);
+    }
+
+    if (mask & DMP_FEATURE_ANDROID_ORIENT) {
+        tmp[0] = 0xD9;
+    } else
+        tmp[0] = 0xD8;
+    mpu_write_mem(CFG_ANDROID_ORIENT_INT, 1, tmp);
+
+    if (mask & DMP_FEATURE_LP_QUAT)
+        dmp_enable_lp_quat(1);
+    else
+        dmp_enable_lp_quat(0);
+
+    if (mask & DMP_FEATURE_6X_LP_QUAT)
+        dmp_enable_6x_lp_quat(1);
+    else
+        dmp_enable_6x_lp_quat(0);
+
+    /* Pedometer is always enabled. */
+    dmp.feature_mask = mask | DMP_FEATURE_PEDOMETER;
+    mpu_reset_fifo();
+
+    dmp.packet_length = 0;
+    if (mask & DMP_FEATURE_SEND_RAW_ACCEL)
+        dmp.packet_length += 6;
+    if (mask & DMP_FEATURE_SEND_ANY_GYRO)
+        dmp.packet_length += 6;
+    if (mask & (DMP_FEATURE_LP_QUAT | DMP_FEATURE_6X_LP_QUAT))
+        dmp.packet_length += 16;
+    if (mask & (DMP_FEATURE_TAP | DMP_FEATURE_ANDROID_ORIENT))
+        dmp.packet_length += 4;
+
+    return 0;
+}
+
+/**
+ *  @brief      Get list of currently enabled DMP features.
+ *  @param[out] Mask of enabled features.
+ *  @return     0 if successful.
+ */
+int dmp_get_enabled_features(unsigned short *mask)
+{
+    mask[0] = dmp.feature_mask;
+    return 0;
+}
+
+/**
+ *  @brief      Calibrate the gyro data in the DMP.
+ *  After eight seconds of no motion, the DMP will compute gyro biases and
+ *  subtract them from the quaternion output. If @e dmp_enable_feature is
+ *  called with @e DMP_FEATURE_SEND_CAL_GYRO, the biases will also be
+ *  subtracted from the gyro output.
+ *  @param[in]  enable  1 to enable gyro calibration.
+ *  @return     0 if successful.
+ */
+int dmp_enable_gyro_cal(unsigned char enable)
+{
+    if (enable) {
+        unsigned char regs[9] = {0xb8, 0xaa, 0xb3, 0x8d, 0xb4, 0x98, 0x0d, 0x35, 0x5d};
+        return mpu_write_mem(CFG_MOTION_BIAS, 9, regs);
+    } else {
+        unsigned char regs[9] = {0xb8, 0xaa, 0xaa, 0xaa, 0xb0, 0x88, 0xc3, 0xc5, 0xc7};
+        return mpu_write_mem(CFG_MOTION_BIAS, 9, regs);
+    }
+}
+
+/**
+ *  @brief      Generate 3-axis quaternions from the DMP.
+ *  In this driver, the 3-axis and 6-axis DMP quaternion features are mutually
+ *  exclusive.
+ *  @param[in]  enable  1 to enable 3-axis quaternion.
+ *  @return     0 if successful.
+ */
+int dmp_enable_lp_quat(unsigned char enable)
+{
+    unsigned char regs[4];
+    if (enable) {
+        regs[0] = DINBC0;
+        regs[1] = DINBC2;
+        regs[2] = DINBC4;
+        regs[3] = DINBC6;
+    }
+    else
+        memset(regs, 0x8B, 4);
+
+    mpu_write_mem(CFG_LP_QUAT, 4, regs);
+
+    return mpu_reset_fifo();
+}
+
+/**
+ *  @brief       Generate 6-axis quaternions from the DMP.
+ *  In this driver, the 3-axis and 6-axis DMP quaternion features are mutually
+ *  exclusive.
+ *  @param[in]   enable  1 to enable 6-axis quaternion.
+ *  @return      0 if successful.
+ */
+int dmp_enable_6x_lp_quat(unsigned char enable)
+{
+    unsigned char regs[4];
+    if (enable) {
+        regs[0] = DINA20;
+        regs[1] = DINA28;
+        regs[2] = DINA30;
+        regs[3] = DINA38;
+    } else
+        memset(regs, 0xA3, 4);
+
+    mpu_write_mem(CFG_8, 4, regs);
+
+    return mpu_reset_fifo();
+}
+
+/**
+ *  @brief      Decode the four-byte gesture data and execute any callbacks.
+ *  @param[in]  gesture Gesture data from DMP packet.
+ *  @return     0 if successful.
+ */
+static int decode_gesture(unsigned char *gesture)
+{
+    unsigned char tap, android_orient;
+
+    android_orient = gesture[3] & 0xC0;
+    tap = 0x3F & gesture[3];
+
+    if (gesture[1] & INT_SRC_TAP) {
+        unsigned char direction, count;
+        direction = tap >> 3;
+        count = (tap % 8) + 1;
+        if (dmp.tap_cb)
+            dmp.tap_cb(direction, count);
+    }
+
+    if (gesture[1] & INT_SRC_ANDROID_ORIENT) {
+        if (dmp.android_orient_cb)
+            dmp.android_orient_cb(android_orient >> 6);
+    }
+
+    return 0;
+}
+
+/**
+ *  @brief      Specify when a DMP interrupt should occur.
+ *  A DMP interrupt can be configured to trigger on either of the two
+ *  conditions below:
+ *  \n a. One FIFO period has elapsed (set by @e mpu_set_sample_rate).
+ *  \n b. A tap event has been detected.
+ *  @param[in]  mode    DMP_INT_GESTURE or DMP_INT_CONTINUOUS.
+ *  @return     0 if successful.
+ */
+int dmp_set_interrupt_mode(unsigned char mode)
+{
+    const unsigned char regs_continuous[11] =
+        {0xd8, 0xb1, 0xb9, 0xf3, 0x8b, 0xa3, 0x91, 0xb6, 0x09, 0xb4, 0xd9};
+    const unsigned char regs_gesture[11] =
+        {0xda, 0xb1, 0xb9, 0xf3, 0x8b, 0xa3, 0x91, 0xb6, 0xda, 0xb4, 0xda};
+
+    switch (mode) {
+    case DMP_INT_CONTINUOUS:
+        return mpu_write_mem(CFG_FIFO_ON_EVENT, 11,
+            (unsigned char*)regs_continuous);
+    case DMP_INT_GESTURE:
+        return mpu_write_mem(CFG_FIFO_ON_EVENT, 11,
+            (unsigned char*)regs_gesture);
+    default:
+        return -1;
+    }
+}
+
+/**
+ *  @brief      Get one packet from the FIFO.
+ *  If @e sensors does not contain a particular sensor, disregard the data
+ *  returned to that pointer.
+ *  \n @e sensors can contain a combination of the following flags:
+ *  \n INV_X_GYRO, INV_Y_GYRO, INV_Z_GYRO
+ *  \n INV_XYZ_GYRO
+ *  \n INV_XYZ_ACCEL
+ *  \n INV_WXYZ_QUAT
+ *  \n If the FIFO has no new data, @e sensors will be zero.
+ *  \n If the FIFO is disabled, @e sensors will be zero and this function will
+ *  return a non-zero error code.
+ *  @param[out] gyro        Gyro data in hardware units.
+ *  @param[out] accel       Accel data in hardware units.
+ *  @param[out] quat        3-axis quaternion data in hardware units.
+ *  @param[out] timestamp   Timestamp in milliseconds.
+ *  @param[out] sensors     Mask of sensors read from FIFO.
+ *  @param[out] more        Number of remaining packets.
+ *  @return     0 if successful.
+ */
+int dmp_read_fifo(short *gyro, short *accel, long *quat,
+    unsigned long *timestamp, short *sensors, unsigned char *more)
+{
+    unsigned char fifo_data[MAX_PACKET_LENGTH];
+    unsigned char ii = 0;
+
+    /* TODO: sensors[0] only changes when dmp_enable_feature is called. We can
+     * cache this value and save some cycles.
+     */
+    sensors[0] = 0;
+
+    /* Get a packet. */
+    if (mpu_read_fifo_stream(dmp.packet_length, fifo_data, more))
+        return -1;
+
+    /* Parse DMP packet. */
+    if (dmp.feature_mask & (DMP_FEATURE_LP_QUAT | DMP_FEATURE_6X_LP_QUAT)) {
+#ifdef FIFO_CORRUPTION_CHECK
+        long quat_q14[4], quat_mag_sq;
+#endif
+        quat[0] = ((long)fifo_data[0] << 24) | ((long)fifo_data[1] << 16) |
+            ((long)fifo_data[2] << 8) | fifo_data[3];
+        quat[1] = ((long)fifo_data[4] << 24) | ((long)fifo_data[5] << 16) |
+            ((long)fifo_data[6] << 8) | fifo_data[7];
+        quat[2] = ((long)fifo_data[8] << 24) | ((long)fifo_data[9] << 16) |
+            ((long)fifo_data[10] << 8) | fifo_data[11];
+        quat[3] = ((long)fifo_data[12] << 24) | ((long)fifo_data[13] << 16) |
+            ((long)fifo_data[14] << 8) | fifo_data[15];
+        ii += 16;
+#ifdef FIFO_CORRUPTION_CHECK
+        /* We can detect a corrupted FIFO by monitoring the quaternion data and
+         * ensuring that the magnitude is always normalized to one. This
+         * shouldn't happen in normal operation, but if an I2C error occurs,
+         * the FIFO reads might become misaligned.
+         *
+         * Let's start by scaling down the quaternion data to avoid long long
+         * math.
+         */
+        quat_q14[0] = quat[0] >> 16;
+        quat_q14[1] = quat[1] >> 16;
+        quat_q14[2] = quat[2] >> 16;
+        quat_q14[3] = quat[3] >> 16;
+        quat_mag_sq = quat_q14[0] * quat_q14[0] + quat_q14[1] * quat_q14[1] +
+            quat_q14[2] * quat_q14[2] + quat_q14[3] * quat_q14[3];
+        if ((quat_mag_sq < QUAT_MAG_SQ_MIN) ||
+            (quat_mag_sq > QUAT_MAG_SQ_MAX)) {
+            /* Quaternion is outside of the acceptable threshold. */
+            mpu_reset_fifo();
+            sensors[0] = 0;
+            return -1;
+        }
+        sensors[0] |= INV_WXYZ_QUAT;
+#endif
+    }
+
+    if (dmp.feature_mask & DMP_FEATURE_SEND_RAW_ACCEL) {
+        accel[0] = ((short)fifo_data[ii+0] << 8) | fifo_data[ii+1];
+        accel[1] = ((short)fifo_data[ii+2] << 8) | fifo_data[ii+3];
+        accel[2] = ((short)fifo_data[ii+4] << 8) | fifo_data[ii+5];
+        ii += 6;
+        sensors[0] |= INV_XYZ_ACCEL;
+    }
+
+    if (dmp.feature_mask & DMP_FEATURE_SEND_ANY_GYRO) {
+        gyro[0] = ((short)fifo_data[ii+0] << 8) | fifo_data[ii+1];
+        gyro[1] = ((short)fifo_data[ii+2] << 8) | fifo_data[ii+3];
+        gyro[2] = ((short)fifo_data[ii+4] << 8) | fifo_data[ii+5];
+        ii += 6;
+        sensors[0] |= INV_XYZ_GYRO;
+    }
+
+    /* Gesture data is at the end of the DMP packet. Parse it and call
+     * the gesture callbacks (if registered).
+     */
+    if (dmp.feature_mask & (DMP_FEATURE_TAP | DMP_FEATURE_ANDROID_ORIENT))
+        decode_gesture(fifo_data + ii);
+
+    get_ms(timestamp);
+    return 0;
+}
+
+/**
+ *  @brief      Register a function to be executed on a tap event.
+ *  The tap direction is represented by one of the following:
+ *  \n TAP_X_UP
+ *  \n TAP_X_DOWN
+ *  \n TAP_Y_UP
+ *  \n TAP_Y_DOWN
+ *  \n TAP_Z_UP
+ *  \n TAP_Z_DOWN
+ *  @param[in]  func    Callback function.
+ *  @return     0 if successful.
+ */
+int dmp_register_tap_cb(void (*func)(unsigned char, unsigned char))
+{
+    dmp.tap_cb = func;
+    return 0;
+}
+
+/**
+ *  @brief      Register a function to be executed on a android orientation event.
+ *  @param[in]  func    Callback function.
+ *  @return     0 if successful.
+ */
+int dmp_register_android_orient_cb(void (*func)(unsigned char))
+{
+    dmp.android_orient_cb = func;
+    return 0;
+}
+
+/**
+ *  @}
+ */
+
+
diff -r 000000000000 -r 5fa30cf392c3 inv_mpu_dmp_motion_driver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inv_mpu_dmp_motion_driver.h	Sun Aug 24 00:52:07 2014 +0000
@@ -0,0 +1,98 @@
+/*
+ $License:
+    Copyright (C) 2011-2012 InvenSense Corporation, All Rights Reserved.
+    See included License.txt for License information.
+ $
+ */
+/**
+ *  @addtogroup  DRIVERS Sensor Driver Layer
+ *  @brief       Hardware drivers to communicate with sensors via I2C.
+ *
+ *  @{
+ *      @file       inv_mpu_dmp_motion_driver.h
+ *      @brief      DMP image and interface functions.
+ *      @details    All functions are preceded by the dmp_ prefix to
+ *                  differentiate among MPL and general driver function calls.
+ */
+#ifndef _INV_MPU_DMP_MOTION_DRIVER_H_
+#define _INV_MPU_DMP_MOTION_DRIVER_H_
+
+#define TAP_X               (0x01)
+#define TAP_Y               (0x02)
+#define TAP_Z               (0x04)
+#define TAP_XYZ             (0x07)
+
+#define TAP_X_UP            (0x01)
+#define TAP_X_DOWN          (0x02)
+#define TAP_Y_UP            (0x03)
+#define TAP_Y_DOWN          (0x04)
+#define TAP_Z_UP            (0x05)
+#define TAP_Z_DOWN          (0x06)
+
+#define ANDROID_ORIENT_PORTRAIT             (0x00)
+#define ANDROID_ORIENT_LANDSCAPE            (0x01)
+#define ANDROID_ORIENT_REVERSE_PORTRAIT     (0x02)
+#define ANDROID_ORIENT_REVERSE_LANDSCAPE    (0x03)
+
+#define DMP_INT_GESTURE     (0x01)
+#define DMP_INT_CONTINUOUS  (0x02)
+
+#define DMP_FEATURE_TAP             (0x001)
+#define DMP_FEATURE_ANDROID_ORIENT  (0x002)
+#define DMP_FEATURE_LP_QUAT         (0x004)
+#define DMP_FEATURE_PEDOMETER       (0x008)
+#define DMP_FEATURE_6X_LP_QUAT      (0x010)
+#define DMP_FEATURE_GYRO_CAL        (0x020)
+#define DMP_FEATURE_SEND_RAW_ACCEL  (0x040)
+#define DMP_FEATURE_SEND_RAW_GYRO   (0x080)
+#define DMP_FEATURE_SEND_CAL_GYRO   (0x100)
+
+#define INV_WXYZ_QUAT       (0x100)
+
+/* Set up functions. */
+int dmp_load_motion_driver_firmware(void);
+int dmp_set_fifo_rate(unsigned short rate);
+int dmp_get_fifo_rate(unsigned short *rate);
+int dmp_enable_feature(unsigned short mask);
+int dmp_get_enabled_features(unsigned short *mask);
+int dmp_set_interrupt_mode(unsigned char mode);
+int dmp_set_orientation(unsigned short orient);
+int dmp_set_gyro_bias(long *bias);
+int dmp_set_accel_bias(long *bias);
+
+/* Tap functions. */
+int dmp_register_tap_cb(void (*func)(unsigned char, unsigned char));
+int dmp_set_tap_thresh(unsigned char axis, unsigned short thresh);
+int dmp_set_tap_axes(unsigned char axis);
+int dmp_set_tap_count(unsigned char min_taps);
+int dmp_set_tap_time(unsigned short time);
+int dmp_set_tap_time_multi(unsigned short time);
+int dmp_set_shake_reject_thresh(long sf, unsigned short thresh);
+int dmp_set_shake_reject_time(unsigned short time);
+int dmp_set_shake_reject_timeout(unsigned short time);
+
+/* Android orientation functions. */
+int dmp_register_android_orient_cb(void (*func)(unsigned char));
+
+/* LP quaternion functions. */
+int dmp_enable_lp_quat(unsigned char enable);
+int dmp_enable_6x_lp_quat(unsigned char enable);
+
+/* Pedometer functions. */
+int dmp_get_pedometer_step_count(unsigned long *count);
+int dmp_set_pedometer_step_count(unsigned long count);
+int dmp_get_pedometer_walk_time(unsigned long *time);
+int dmp_set_pedometer_walk_time(unsigned long time);
+
+/* DMP gyro calibration functions. */
+int dmp_enable_gyro_cal(unsigned char enable);
+
+/* Read function. This function should be called whenever the MPU interrupt is
+ * detected.
+ */
+int dmp_read_fifo(short *gyro, short *accel, long *quat,
+    unsigned long *timestamp, short *sensors, unsigned char *more);
+
+#endif  /* #ifndef _INV_MPU_DMP_MOTION_DRIVER_H_ */
+
+