Maxim Integrated
C library/driver for the Maxim Sensor Hub. Reusable sensor hub code for MAX32664, MAXREFDES101, MAXREFDES220.
Dependents: Host_Software_MAX32664GWEB_HR_wrist Host_Software_MAX32664GWEC_SpO2_HR
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Maxim_Sensor_Hub_Communications
by 
mehmet gok
Revision 0:23dade9a66bf, committed 2018-12-17
- Comitter:
- gmehmet
- Date:
- Mon Dec 17 07:56:04 2018 +0000
- Commit message:
- as Library
Changed in this revision
| SHComm.cpp | Show annotated file Show diff for this revision Revisions of this file |
| SHComm.h | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SHComm.cpp Mon Dec 17 07:56:04 2018 +0000
@@ -0,0 +1,913 @@
+/*******************************************************************************
+ * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+/*
+#ifdef __cplusplus
+extern "C" {
+#endif
+*/
+
+#include <events/mbed_events.h>
+#include <mbed.h>
+#include "mbed.h"
+
+#include "SHComm.h"
+
+
+#define SS_I2C_8BIT_SLAVE_ADDR 0xAA
+#define SENSORHUB_I2C_ADRESS SS_I2C_8BIT_SLAVE_ADDR
+
+#define ENABLED ((int)(1))
+#define DISABLED ((int)(0))
+
+#define SS_DUMP_REG_SLEEP_MS (100)
+#define SS_ENABLE_SENSOR_SLEEP_MS (20)
+#define SS_DEFAULT_CMD_SLEEP_MS (2)
+#define SS_WAIT_BETWEEN_TRIES_MS (2)
+#define SS_CMD_WAIT_PULLTRANS_MS (5)
+#define SS_FEEDFIFO_CMD_SLEEP_MS (30)
+
+
+#define SS_DEFAULT_RETRIES ((int) (4))
+#define SS_ZERO_DELAY 0
+#define SS_ZERO_BYTES 0
+
+
+/*define sample size of algorithm and raw sensor data in bytes*/
+#define SH_ALGO_WHRM_SAMPLE_DATABYTES 4
+#define SH_ALGO_SP02_SAMPLE_DATABYTES 4
+
+
+/*define command sequences given in Maxim ME32664 user manual*/
+#define SH_GET_HUB_STATUS_CMDSEQ {0x00,0x00}
+#define SH_SET_OPERATING_MODE_CMDSEQ(opMode) {0x01,0x00,opMode}
+ #define SH_SET_OPERATING_MODE_BOOTLOADER_CMDSEQ {0x02,0x00,0x08}
+ #define SH_SET_OPERATING_MODE_APPLICATION_CMDSEQ {0x02,0x00,0x00}
+ #define SH_SET_OPERATING_MODE_RESET_CMDSEQ {0x02,0x00,0x02}
+#define SH_GET_OPERATING_MODE_CMDSEQ {0x02,0x00}
+
+#define SH_SET_OUTPUT_MODE_CMDSEQ( outMode) {0x10,0x00, outMode}
+ #define SH_SET_OUTMODE_NODATA_CMDSEQ {0x10,0x00,0x00}
+ #define SH_SET_OUTMODE_SENSORDATA_CMDSEQ {0x10,0x00,0x01}
+ #define SH_SET_OUTMODE_ALGODATA_CMDSEQ {0x10,0x00,0x02}
+ #define SH_SET_OUTMODE_PAUSE_CMDSEQ {0x10,0x00,0x04}
+ #define SH_SET_OUTMODE_SENSAMPLECNT_CMDSEQ {0x10,0x00,0x05}
+ #define SH_SET_OUTMODE_ALGOSAMPLECNT_CMDSEQ {0x10,0x00,0x06}
+ #define SH_SET_OUTMODE_ALGOSENSAMPLECNT_CMDSEQ {0x10,0x00,0x07}
+
+#define SH_GET_OUTPUT_MODE_CMDSEQ {0x11,0x00}
+
+#define SH_DFIFO_SET_INT_THRESHOLD_CMDSEQ( ucThreshold ) {0x10,0x01,ucThreshold}
+#define SH_DFIFO_GET_INT_THRESHOLD_CMDSEQ {0x11,0x01}
+
+#define SH_DFIFO_GET_NSAMPLES_CMDSEQ {0x12,0x00}
+#define SH_DFIFO_PULL_SAMPLE_CMDSEQ {0x12,0x01}
+#define SH_GET_EXTINPUT_FIFOSZ_CMDSEQ {0x13,0x01}
+#define SH_GET_SAMPLEBYTECNT_INPUTFIFO_CMDSEQ {0x13,0x04}
+#define SH_FEED_TO_INPUTFIFO_CMDSEQ {0x14,0x00}
+
+#define SH_WRITE_SENSORREG_CMDSEQ( sensorIdx , regAddr ) { 0x40, sensorIdx , regAddr}
+#define SH_READ_SENSORREG_CMDSEQ( sensorIdx , regAddr ) { 0x41, sensorIdx , regAddr}
+#define SH_READ_AFE_ATTRIBUTES_CMDSEQ(sensorIdx) { 0x42, sensorIdx}
+#define SH_READ_ALLREGISTERS_CMDSEQ(sensorIdx) { 0x43, sensorIdx}
+
+#define SH_ENABLE_SENSOR_CMDSEQ(sensorIdx , extMode) {0x44, sensorIdx, 0x01 , extMode }
+#define SH_DISABLE_SENSOR_CMDSEQ(sensorIdx) {0x44, sensorIdx, 0x00}
+
+
+#define SH_AGC_SET_ADCRANGE_CMDSEQ( uiPercentage) {0x50, 0x00, 0x00 , uiPercentage}
+#define SH_AGC_SET_STEPSZ_CMDSEQ( uiPercentage) {0x50, 0x00, 0x01 , uiPercentage}
+#define SH_AGC_SET_SENSITIVITY_CMDSEQ( uiPercentage) {0x50, 0x00, 0x02 , uiPercentage}
+#define SH_AGC_SET_NSAMPLESAVRAGING_CMDSEQ( ucNsamples) {0x50, 0x00, 0x03 , uiNsamples}
+#define SH_WHRM_SET_SAMPRATE_CMDSEQ( ucNsamples) {0x50, 0x02, 0x03 , uiNsamples}
+
+
+#define SH_ENABLE_ALGO_CMDSEQ( algoIdx) { 0x52, algoIdx , 0x01}
+#define SH_DISABLE_ALGO_CMDSEQ( algoIdx) { 0x52, algoIdx , 0x00}
+
+#define SH_SET_ALGO_CONFIGURATION_CMDSEQ( algoIdx, cgfIdx) { 0x50 , algoIdx, cgfIdx }
+#define SH_GET_ALGO_CONFIGURATION_CMDSEQ( algoIdx, cgfIdx) { 0x51 , algoIdx, cgfIdx }
+
+#define SH_COMM_CHECK_CMDSEQ {0xFF, 0x00}
+
+ /*
+ * define the "platform specific" hardware interface which SSinterface requires:
+ * 1. master i2c port
+ * 2. interrupt attachable I/O pin (mfio)
+ * 3. I/O pin for reset
+ * Note: Definitions below are for MAX32630FTR Pagasus board . Modify for your platform.
+ **/
+I2C *m_i2cBus; /*i2c bus sensor hub is connected to*/
+
+PinName ss_mfio(P5_4); /* platform specific mfio event pin */
+PinName ss_reset(P5_6); /* platform specific sensor hub reset pin */
+DigitalInOut mfio_pin(ss_mfio); /* mfio pin mode be I/O */
+DigitalInOut reset_pin(ss_reset); /* reset pin mode be I/O */
+InterruptIn irq_pin(ss_mfio); /* define mfio pin interrupt attachable*/
+
+
+/*
+ * SSI API funcions
+ * NOTE: Generic functions for any platform.
+ * exceptions: below needs needs modification according to platform and HAL drivers
+ * 1. Hard reset function
+ * 2. Enable/disable mfio event interrput
+ * 3. mfio pin interrupt routine
+ *
+ * **/
+
+/*global buffer for sensor i2c commands+data*/
+uint8_t sh_write_buf[512];
+static volatile bool m_irq_received_ = false;
+static volatile bool mfio_int_happened = false;
+
+/* sensor hub states */
+static bool sc_en = false;
+static int data_type = 0;
+static int is_sensor_enabled[SS_MAX_SUPPORTED_SENSOR_NUM] = {0};
+static int is_algo_enabled[SS_MAX_SUPPORTED_ALGO_NUM] = {0};
+static int sensor_sample_sz[SS_MAX_SUPPORTED_SENSOR_NUM] = {0};
+static int algo_sample_sz[SS_MAX_SUPPORTED_ALGO_NUM] = {0};
+
+
+
+/* desc :
+ * Func to init master i2c hardware comm interface with sennor hub
+ * init mfio interrupt pin and attach irq to pin
+ * init reset pin
+ * params:
+ * N/A
+ */
+
+
+void sh_irq_handler();
+void sh_init_hwcomm_interface(){
+ static I2C ssI2C(P3_4, P3_5); /*set up sensor hub i2c communication at 400 kHz*/
+ ssI2C.frequency(400000);
+ m_i2cBus = &ssI2C;
+
+ reset_pin.input();
+ reset_pin.mode(PullUp);
+ mfio_pin.input(); /*set mfio as input for getting mfio event reporting when sesnor hub is on application mode */
+ mfio_pin.mode(PullUp);
+
+ irq_pin.fall(sh_irq_handler); /*attach falling edge interrupt to mfio pin for mfio event reporting */
+
+ return;
+}
+
+/* mfio pin event reporting related interrupt functions*/
+/*
+ * data ready event reporting isr from sensor hub
+ *
+ * params:
+ * N/A
+ * */
+void sh_irq_handler()
+{
+ m_irq_received_ = true;
+}
+void sh_clear_mfio_event_flag(void){
+ m_irq_received_ = false;
+}
+
+bool sh_has_mfio_event(void){
+ return m_irq_received_;
+}
+
+/* desc:
+ * func to enable event reporting from sensor hub
+ *
+ * params:
+ * N/A
+ * */
+void sh_enable_irq_mfioevent(void)
+{
+ irq_pin.enable_irq();
+}
+
+/* desc:
+ * func to disable event reporting from sensor hub
+ *
+ * params:
+ * N/A
+ * */
+void sh_disable_irq_mfioevent(void)
+{
+ irq_pin.disable_irq();
+}
+
+/* desc:
+ * reset event reporting process from sensor hub
+ *
+ * params:
+ * N/A
+ **/
+bool sh_reset_mfio_irq(){
+ bool ret = mfio_int_happened;
+ mfio_int_happened = false;
+ sh_disable_irq_mfioevent();
+ irq_pin.fall(sh_irq_handler);
+ sh_enable_irq_mfioevent();
+ return ret;
+}
+
+
+/*
+ * desc:
+ * function to reset sensor hub and put to application mode after reset interface and get data format.
+ *
+ * params:
+ *
+ * __I wakeupMode : 0x00 : application mode
+ * 0x08 : bootloader mode
+ * */
+int sh_hard_reset(int wakeupMode){
+
+ int status;
+ sh_disable_irq_mfioevent();
+ reset_pin.output();
+ mfio_pin.output();
+
+ reset_pin.write(0);
+ wait_ms(SS_RESET_TIME);
+
+ if( (wakeupMode & 0xFF) == 0 ) {
+
+ mfio_pin.write(1);
+ reset_pin.write(1);
+ wait_ms(SS_STARTUP_TO_MAIN_APP_TIME);
+
+ }else {
+
+ mfio_pin.write(0);
+ reset_pin.write(1);
+ wait_ms(SS_STARTUP_TO_BTLDR_TIME);
+ }
+ mfio_pin.input();
+ mfio_pin.mode(PullUp);
+ reset_pin.input();
+ sh_enable_irq_mfioevent();
+}
+
+
+/*
+ * desc:
+ * function to init sensor comm interface and get data format.
+ *
+ * */
+void sh_init_hubinterface(void){
+
+ sh_init_hwcomm_interface();
+ //sh_get_data_type(&data_type, &sc_en);
+ return;
+}
+
+
+
+
+
+/*
+ *
+ * SENSOR HUB COMMUNICATION INTERFACE ( Defined in MAX32664 User Guide ) API FUNCTIONS
+ *
+ *
+ * */
+
+int sh_write_cmd( uint8_t *tx_buf,
+ int tx_len,
+ int sleep_ms)
+{
+ int retries = SS_DEFAULT_RETRIES;
+ int ret = m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)tx_buf, tx_len);
+ while (ret != 0 && retries-- > 0) {
+
+ wait_ms(1);
+ ret = m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)tx_buf, tx_len);
+ }
+ if (ret != 0)
+ return SS_ERR_UNAVAILABLE;
+
+
+ wait_ms(sleep_ms);
+
+ char status_byte;
+ ret = m_i2cBus->read(SS_I2C_8BIT_SLAVE_ADDR, &status_byte, 1);
+ bool try_again = (status_byte == SS_ERR_TRY_AGAIN);
+ while ((ret != 0 || try_again)
+ && retries-- > 0) {
+ wait_ms(sleep_ms);
+ ret = m_i2cBus->read(SS_I2C_8BIT_SLAVE_ADDR, &status_byte, 1);
+ try_again = (status_byte == SS_ERR_TRY_AGAIN);
+ }
+
+ if (ret != 0 || try_again)
+ return SS_ERR_UNAVAILABLE;
+
+ return (int) (SS_STATUS)status_byte;
+}
+
+
+int sh_write_cmd_with_data(uint8_t *cmd_bytes,
+ int cmd_bytes_len,
+ uint8_t *data,
+ int data_len,
+ int cmd_delay_ms)
+{
+ memcpy(sh_write_buf, cmd_bytes, cmd_bytes_len);
+ memcpy(sh_write_buf + cmd_bytes_len, data, data_len);
+ int status = sh_write_cmd(sh_write_buf,cmd_bytes_len + data_len, cmd_delay_ms);
+ return status;
+}
+
+
+int sh_read_cmd( uint8_t *cmd_bytes,
+ int cmd_bytes_len,
+ uint8_t *data,
+ int data_len,
+ uint8_t *rxbuf,
+ int rxbuf_sz,
+ int sleep_ms )
+{
+
+ int retries = SS_DEFAULT_RETRIES;
+
+ int ret = m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)cmd_bytes, cmd_bytes_len, (data_len != 0));
+ if (data_len != 0)
+ ret |= m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)data, data_len, false);
+
+
+ while (ret != 0 && retries-- > 0) {
+ wait_ms(1);
+ ret = m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)cmd_bytes, cmd_bytes_len, (data_len != 0));
+ if (data_len != 0)
+ ret |= m_i2cBus->write(SS_I2C_8BIT_SLAVE_ADDR, (char*)data, data_len, false);
+
+ }
+ if (ret != 0)
+ return SS_ERR_UNAVAILABLE;
+
+
+ wait_ms(sleep_ms);
+
+ ret = m_i2cBus->read(SS_I2C_8BIT_SLAVE_ADDR, (char*)rxbuf, rxbuf_sz);
+ bool try_again = (rxbuf[0] == SS_ERR_TRY_AGAIN);
+ while ((ret != 0 || try_again) && retries-- > 0) {
+ wait_ms(sleep_ms);
+ ret = m_i2cBus->read(SS_I2C_8BIT_SLAVE_ADDR, (char*)rxbuf, rxbuf_sz);
+ try_again = (rxbuf[0] == SS_ERR_TRY_AGAIN);
+ }
+ if (ret != 0 || try_again)
+ return SS_ERR_UNAVAILABLE;
+
+ return (int) ((SS_STATUS)rxbuf[0]);
+}
+
+
+
+int sh_get_sensorhub_status(uint8_t *hubStatus){
+
+ uint8_t ByteSeq[] = SH_GET_HUB_STATUS_CMDSEQ;
+ uint8_t rxbuf[2] = { 0 };
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ *hubStatus = rxbuf[1];
+ return status;
+}
+
+
+int sh_get_sensorhub_operating_mode(uint8_t *hubMode){
+
+ uint8_t ByteSeq[] = SH_GET_OPERATING_MODE_CMDSEQ;
+ uint8_t rxbuf[2] = { 0 };
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ *hubMode = rxbuf[1];
+ return status;
+}
+
+
+int sh_set_sensorhub_operating_mode(uint8_t hubMode){
+
+ uint8_t ByteSeq[] = SH_SET_OPERATING_MODE_CMDSEQ(hubMode);
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), SS_DEFAULT_CMD_SLEEP_MS);
+ return status;
+
+}
+
+
+//int sh_set_data_type( uint8_t outMode)
+int sh_set_data_type(int data_type_, bool sc_en_)
+{
+
+#if 0
+ uint8_t dataTypeSc = (uint8_t)((sc_en ? SS_MASK_OUTPUTMODE_SC_EN : 0) | ((data_type << SS_SHIFT_OUTPUTMODE_DATATYPE) & SS_MASK_OUTPUTMODE_DATATYPE));
+ uint8_t ByteSeq[] = SH_SET_OUTPUT_MODE_CMDSEQ( dataTypeSc);
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), SS_DEFAULT_CMD_SLEEP_MS);
+ if( status == 0x00){
+ data_type = data_type_;
+ sc_en = sc_en_;
+ }
+#endif
+
+ uint8_t cmd_bytes[] = { SS_FAM_W_COMMCHAN, SS_CMDIDX_OUTPUTMODE };
+ uint8_t data_bytes[] = { (uint8_t)((sc_en_ ? SS_MASK_OUTPUTMODE_SC_EN : 0) |
+ ((data_type_ << SS_SHIFT_OUTPUTMODE_DATATYPE) & SS_MASK_OUTPUTMODE_DATATYPE)) };
+
+ int status = sh_write_cmd_with_data(&cmd_bytes[0], sizeof(cmd_bytes),
+ &data_bytes[0], sizeof(data_bytes),
+ SS_DEFAULT_CMD_SLEEP_MS);
+ data_type = data_type_;
+ sc_en = sc_en_;
+
+ return status;
+}
+
+
+int sh_get_data_type(int *data_type_, bool *sc_en_){
+
+ uint8_t ByteSeq[] = SH_GET_OUTPUT_MODE_CMDSEQ;
+ uint8_t rxbuf[2] = {0};
+ int status = sh_read_cmd( &ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS);
+ if (status == 0x00 /*SS_SUCCESS*/) {
+ *data_type_ =
+ (rxbuf[1] & SS_MASK_OUTPUTMODE_DATATYPE) >> SS_SHIFT_OUTPUTMODE_DATATYPE;
+ *sc_en_ =
+ (bool)((rxbuf[1] & SS_MASK_OUTPUTMODE_SC_EN) >> SS_SHIFT_OUTPUTMODE_SC_EN);
+
+ }
+
+ return status;
+
+}
+
+
+int sh_set_fifo_thresh( int threshold ){
+
+#if 0
+ uint8_t ucThresh = (uint8_t) (threshold & 0xFF);
+ uint8_t ByteSeq[] = SH_DFIFO_SET_INT_THRESHOLD_CMDSEQ(ucThresh );
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), SS_DEFAULT_CMD_SLEEP_MS);
+ return status;
+#endif
+
+ uint8_t cmd_bytes[] = { SS_FAM_W_COMMCHAN, SS_CMDIDX_FIFOAFULL };
+ uint8_t data_bytes[] = { (uint8_t)threshold };
+
+ int status = sh_write_cmd_with_data(&cmd_bytes[0], sizeof(cmd_bytes),
+ &data_bytes[0], sizeof(data_bytes),
+ SS_DEFAULT_CMD_SLEEP_MS
+ );
+ return status;
+
+}
+
+
+int sh_get_fifo_thresh(int *thresh){
+
+ uint8_t ByteSeq[] = SH_DFIFO_GET_INT_THRESHOLD_CMDSEQ;
+ uint8_t rxbuf[2] = {0};
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ *thresh = (int) rxbuf[1];
+
+ return status;
+
+}
+
+
+int sh_ss_comm_check(void){
+
+
+ uint8_t ByteSeq[] = SH_COMM_CHECK_CMDSEQ;
+ uint8_t rxbuf[2];
+
+ int status = sh_read_cmd( &ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS );
+
+ int tries = 4;
+ while (status == SS_ERR_TRY_AGAIN && tries--) {
+ wait_ms(1000);
+ status = sh_read_cmd( &ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS );
+
+ }
+
+ return status;
+}
+
+
+int sh_num_avail_samples(int *numSamples) {
+
+ uint8_t ByteSeq[] = SH_DFIFO_GET_NSAMPLES_CMDSEQ;
+ uint8_t rxbuf[2] = {0};
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ 1);
+
+ *numSamples = (int) rxbuf[1];
+
+ return status;
+}
+
+
+int sh_read_fifo_data( int numSamples,
+ int sampleSize,
+ uint8_t* databuf,
+ int databufSz) {
+
+ int bytes_to_read = numSamples * sampleSize + 1; //+1 for status byte
+
+ uint8_t ByteSeq[] = SH_DFIFO_PULL_SAMPLE_CMDSEQ;
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ databuf, bytes_to_read,
+ 10);
+
+ return status;
+}
+
+
+/*
+ * desc:
+ * func to read sample size for SmartSensor input FIFO for extrenal accel data
+ *
+ * params:
+ * __O sampSize: size of data sample struct in bytes
+ * returns:
+ * 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ *
+ **/
+int sh_read_input_fifo_samplesz( int *sampSize){
+
+ /* NOT IMPLEMENTED IN SS INTERFACE */
+
+}
+
+/*
+ * desc:
+ * func to write data samples to SmartSensor input FIFO for extrenal accel data
+ *
+ * params:
+ ...
+ * returns:
+ * 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_write_input_fifo( void *arg){
+
+ /* NOT IMPLEMENTED IN SS INTERFACE */
+
+}
+
+
+int sh_set_reg(int idx, uint8_t addr, uint32_t val, int regSz){
+
+ uint8_t ByteSeq[] = SH_WRITE_SENSORREG_CMDSEQ( ((uint8_t)idx) , addr );
+ uint8_t data_bytes[4];
+ for (int i = 0; i < regSz; i++) {
+ data_bytes[i] = (val >> (8 * (regSz - 1)) & 0xFF);
+ }
+ int status = sh_write_cmd_with_data( &ByteSeq[0], sizeof(ByteSeq),
+ &data_bytes[0], (uint8_t) regSz,
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ return status;
+}
+
+
+int sh_get_reg(int idx, uint8_t addr, uint32_t *val){
+
+
+ uint32_t i32tmp;
+ uint8_t ByteSeq[] = SH_READ_AFE_ATTRIBUTES_CMDSEQ(((uint8_t) idx));
+ uint8_t rxbuf[3] = {0};
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ &rxbuf[0], sizeof(rxbuf),
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+
+ if(status == 0x00 /* SS_SUCCESS */) {
+
+ int reg_width = rxbuf[1];
+ uint8_t ByteSeq2[] = SH_READ_SENSORREG_CMDSEQ( ((uint8_t)idx) , addr );
+ uint8_t rxbuf2[5] = {0};
+ status = sh_read_cmd(&ByteSeq2[0], sizeof(ByteSeq2),
+ 0, 0,
+ &rxbuf2[0], reg_width + 1,
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ if (status == 0x00 /* SS_SUCCESS */) {
+ i32tmp = 0;
+ for (int i = 0; i < reg_width; i++) {
+ i32tmp = (i32tmp << 8) | rxbuf2[i + 1];
+ }
+ *val = i32tmp;
+ }
+ }
+
+ return status;
+
+}
+
+
+int sh_sensor_enable( int idx , int sensorSampleSz , uint8_t ext_mode ){
+
+ uint8_t ByteSeq[] = SH_ENABLE_SENSOR_CMDSEQ( ((uint8_t) idx) , ((uint8_t) ext_mode));
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), 5 * SS_ENABLE_SENSOR_SLEEP_MS);
+ if(status == 0x00){
+
+ is_sensor_enabled[idx] = ENABLED;
+ sensor_sample_sz[idx] = sensorSampleSz;
+ }
+ return status;
+
+}
+
+
+int sh_sensor_disable( int idx ){
+
+ uint8_t ByteSeq[] = SH_DISABLE_SENSOR_CMDSEQ( ((uint8_t) idx));
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), SS_ENABLE_SENSOR_SLEEP_MS);
+ if(status == 0x00){
+
+ is_sensor_enabled[idx] = DISABLED;
+ }
+ return status;
+
+}
+
+
+int sh_get_input_fifo_size(int *fifo_size)
+{
+
+ uint8_t ByteSeq[] = SH_GET_EXTINPUT_FIFOSZ_CMDSEQ;
+ uint8_t rxbuf[3]; /* status + fifo size */
+
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ rxbuf, sizeof(rxbuf), 2*SS_DEFAULT_CMD_SLEEP_MS);
+
+ *fifo_size = rxbuf[1] << 8 | rxbuf[2];
+ return status;
+}
+
+
+int sh_feed_to_input_fifo(uint8_t *tx_buf, int tx_buf_sz, int *nb_written)
+{
+ int status;
+
+ uint8_t ByteSeq[] = SH_FEED_TO_INPUTFIFO_CMDSEQ;
+ uint8_t rxbuf[3];
+
+ tx_buf[0] = 0x14;
+ tx_buf[1] = 0x00;
+
+ status= sh_read_cmd(tx_buf, tx_buf_sz,
+ 0, 0,
+ rxbuf, sizeof(rxbuf), SS_FEEDFIFO_CMD_SLEEP_MS);
+
+ *nb_written = rxbuf[1] * 256 + rxbuf[2];
+ return status;
+}
+
+
+int sh_get_num_bytes_in_input_fifo(int *fifo_size)
+{
+
+ uint8_t ByteSeq[] = SH_GET_SAMPLEBYTECNT_INPUTFIFO_CMDSEQ;
+ uint8_t rxbuf[3]; /* status + fifo size */
+
+
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ rxbuf, sizeof(rxbuf),
+ 2*SS_DEFAULT_CMD_SLEEP_MS);
+
+ *fifo_size = rxbuf[1] << 8 | rxbuf[2];
+ return status;
+}
+
+
+/*
+ * ALGARITIM RELATED FUNCTIONS :)
+ *
+ *
+ *
+ *
+ *
+ * */
+
+
+int sh_enable_algo(int idx , int algoSampleSz){
+
+ uint8_t ByteSeq[] = SH_ENABLE_ALGO_CMDSEQ( ((uint8_t) idx) );
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), 25 * SS_ENABLE_SENSOR_SLEEP_MS);
+ if(status == 0x00){
+
+ is_algo_enabled[idx] = ENABLED;
+ algo_sample_sz[idx] = algoSampleSz;
+ }
+ return status;
+
+}
+
+
+int sh_disable_algo(int idx){
+
+ uint8_t ByteSeq[] = SH_DISABLE_ALGO_CMDSEQ( ((uint8_t) idx) );
+ int status = sh_write_cmd( &ByteSeq[0],sizeof(ByteSeq), SS_ENABLE_SENSOR_SLEEP_MS );
+ if(status == 0x00){
+
+ is_algo_enabled[idx] = DISABLED;
+ }
+ return status;
+
+}
+
+
+int sh_set_algo_cfg(int algo_idx, int cfg_idx, uint8_t *cfg, int cfg_sz){
+
+ uint8_t ByteSeq[] = SH_SET_ALGO_CONFIGURATION_CMDSEQ( ((uint8_t) algo_idx) , ((uint8_t) cfg_idx) );
+ int status = sh_write_cmd_with_data( &ByteSeq[0], sizeof(ByteSeq),
+ cfg, cfg_sz,
+ SS_DEFAULT_CMD_SLEEP_MS);
+
+ return status;
+
+}
+
+
+int sh_get_algo_cfg(int algo_idx, int cfg_idx, uint8_t *cfg, int cfg_sz){
+
+ uint8_t ByteSeq[] = SH_GET_ALGO_CONFIGURATION_CMDSEQ( ((uint8_t) algo_idx) , ((uint8_t) cfg_idx) );
+ int status = sh_read_cmd(&ByteSeq[0], sizeof(ByteSeq),
+ 0, 0,
+ cfg, cfg_sz,
+ SS_DEFAULT_CMD_SLEEP_MS);
+ return status;
+
+}
+
+
+/*
+ * desc:
+ * func to get active cumulative sample size of sensor hub in order to
+ * calculate number of bytes to be read from sensor hub report data buffer
+ *
+ * params:
+ * __I data_type : active data type of sensor hub -> no data :0 (SS_DATATYPE_PAUSE)
+ * raw sensor data only :1 (SS_DATATYPE_RAW)
+ * algo data only :2 (SS_DATATYPE_ALGO)
+ * algo+raw data :3 (SS_DATATYPE_BOTH)
+ * __O sample_size : calculated active cumulative sample size
+
+ * returns:
+ * N/A
+ *
+ **/
+static void fifo_sample_size(int data_type_, int *sample_size)
+{
+
+ int tmpSz = 0;
+ //*sample_size = 0;
+
+ if (data_type_ == SS_DATATYPE_RAW || data_type_ == SS_DATATYPE_BOTH) {
+ for (int i = 0; i < SS_MAX_SUPPORTED_SENSOR_NUM; i++) {
+ if (is_sensor_enabled[i]) {
+ tmpSz += sensor_sample_sz[i];
+ //*sample_size += sensor_data_reqs[i]->data_size;
+ }
+ }
+ }
+
+ if (data_type_ == SS_DATATYPE_ALGO || data_type_ == SS_DATATYPE_BOTH) {
+ for (int i = 0; i < SS_MAX_SUPPORTED_ALGO_NUM; i++) {
+ if (is_algo_enabled[i]) {
+ tmpSz += algo_sample_sz[i];
+ //*sample_size += algo_data_reqs[i]->data_size;
+ }
+ }
+ }
+
+ *sample_size = tmpSz;
+}
+
+
+void sh_ss_execute_once( uint8_t *databuf , int databufLen , int *nSamplesRead){
+
+ if(m_irq_received_ == false) {
+ *nSamplesRead = 0;
+ return;
+ }
+
+ uint8_t sample_count;
+
+ sh_disable_irq_mfioevent();
+ sh_clear_mfio_event_flag();
+
+ uint8_t hubStatus = 0;
+ int status = sh_get_sensorhub_status(&hubStatus);
+ if(status != 0x00 /*SS_SUCCESS*/){
+ sh_enable_irq_mfioevent();
+ return;
+ }
+
+ if (hubStatus & SS_MASK_STATUS_DATA_RDY) {
+
+ int num_samples = 1;
+ status = sh_num_avail_samples(&num_samples);
+ if (status != 0x00 /*SS_SUCCESS*/){
+ sh_enable_irq_mfioevent();
+ return;
+ }
+
+
+ int sample_size;
+ fifo_sample_size(data_type, &sample_size);
+ /*DEBUG *///
+ //printf("____DATA READY %d %d \n", (int)num_samples, sample_size);
+
+ int bytes_to_read = num_samples * sample_size + 1; //+1 for status byte
+ if ((uint32_t)bytes_to_read > databufLen) {
+ //Reduce number of samples to read to fit in buffer
+ num_samples = (databufLen - 1) / sample_size;
+ }
+ wait_ms(5);
+ status = sh_read_fifo_data(num_samples, sample_size, &databuf[0], databufLen);
+ if(status != 0x00 /*SS_SUCCESS*/){
+ *nSamplesRead = 0;
+ sh_enable_irq_mfioevent();
+ return;
+ }
+ *nSamplesRead = num_samples;
+
+ }
+
+ sh_enable_irq_mfioevent();
+ return;
+}
+
+
+
+
+
+
+/*
+#ifdef __cplusplus
+}
+#endif
+*/
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SHComm.h Mon Dec 17 07:56:04 2018 +0000
@@ -0,0 +1,625 @@
+/*******************************************************************************
+ * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef SOURCE_SHCOMM_H_
+#define SOURCE_SHCOMM_H_
+
+/*
+#ifdef __cplusplus
+extern "C" {
+#endif
+*/
+
+// Sensor/Algo indicies
+#define SH_SENSORIDX_MAX8614X 0x00
+#define SH_SENSORIDX_MAX30205 0x01
+#define SH_SENSORIDX_MAX30001 0x02
+#define SH_SENSORIDX_MAX30101 0x03
+#define SH_SENSORIDX_ACCEL 0x04
+#define SH_NUM_CURRENT_SENSORS 5
+
+#define SH_ALGOIDX_AGC 0x00
+#define SH_ALGOIDX_AEC 0x01
+#define SH_ALGOIDX_WHRM 0x02
+#define SH_ALGOIDX_ECG 0x03
+#define SH_ALGOIDX_BPT 0x04
+#define SH_ALGOIDX_WSPO2 0x05
+#define SH_NUM_CURRENT_ALGOS 6
+
+#define PADDING_BYTE (0xEE)
+#define DATA_BYTE (0xED)
+
+
+#define SS_I2C_8BIT_SLAVE_ADDR 0xAA
+#define SS_DEFAULT_CMD_SLEEP_MS 2
+#define SS_DUMP_REG_SLEEP_MS 100
+#define SS_ENABLE_SENSOR_SLEEP_MS 20
+
+#define SH_INPUT_DATA_DIRECT_SENSOR 0x00
+#define SH_INPUT_DATA_FROM_HOST 0x01
+
+#define SS_FAM_R_STATUS 0x00
+ #define SS_CMDIDX_STATUS 0x00
+ #define SS_SHIFT_STATUS_ERR 0
+ #define SS_MASK_STATUS_ERR (0x07 << SS_SHIFT_STATUS_ERR)
+ #define SS_SHIFT_STATUS_DATA_RDY 3
+ #define SS_MASK_STATUS_DATA_RDY (1 << SS_SHIFT_STATUS_DATA_RDY)
+ #define SS_SHIFT_STATUS_FIFO_OUT_OVR 4
+ #define SS_MASK_STATUS_FIFO_OUT_OVR (1 << SS_SHIFT_STATUS_FIFO_OUT_OVR)
+ #define SS_SHIFT_STATUS_FIFO_IN_OVR 5
+ #define SS_MASK_STATUS_FIFO_IN_OVR (1 << SS_SHIFT_STATUS_FIFO_IN_OVR)
+
+ #define SS_SHIFT_STATUS_LOG_OVR 6
+ #define SS_MASK_STATUS_LOG_OVR (1 << SS_SHIFT_STATUS_LOG_OVR)
+
+ #define SS_SHIFT_STATUS_LOG_RDY 7
+ #define SS_MASK_STATUS_LOG_RDY (1 << SS_SHIFT_STATUS_LOG_RDY)
+
+
+
+#define SS_FAM_W_MODE 0x01
+#define SS_FAM_R_MODE 0x02
+ #define SS_CMDIDX_MODE 0x00
+ #define SS_SHIFT_MODE_SHDN 0
+ #define SS_MASK_MODE_SHDN (1 << SS_SHIFT_MODE_SHDN)
+ #define SS_SHIFT_MODE_RESET 1
+ #define SS_MASK_MODE_RESET (1 << SS_SHIFT_MODE_RESET)
+ #define SS_SHIFT_MODE_FIFORESET 2
+ #define SS_MASK_MODE_FIFORESET (1 << SS_SHIFT_MODE_FIFORESET)
+ #define SS_SHIFT_MODE_BOOTLDR 3
+ #define SS_MASK_MODE_BOOTLDR (1 << SS_SHIFT_MODE_BOOTLDR)
+
+/*MYG*/
+#define SH_MODE_REQUEST_RET_BYTES (2)
+#define SH_MODE_REQUEST_DELAY (2)
+#define SH_STATUS_REQUEST_RET_BYTES (2)
+#define SH_STATUS_REQUEST_DELAY (2)
+
+
+
+#define SS_I2C_READ 0x03
+
+#define SS_FAM_W_COMMCHAN 0x10
+#define SS_FAM_R_COMMCHAN 0x11
+ #define SS_CMDIDX_OUTPUTMODE 0x00
+ #define SS_SHIFT_OUTPUTMODE_DATATYPE 0
+ #define SS_MASK_OUTPUTMODE_DATATYPE (0x03 << SS_SHIFT_OUTPUTMODE_DATATYPE)
+ #define SS_DATATYPE_PAUSE 0
+ #define SS_DATATYPE_RAW 1
+ #define SS_DATATYPE_ALGO 2
+ #define SS_DATATYPE_BOTH 3
+ #define SS_SHIFT_OUTPUTMODE_SC_EN 2
+ #define SS_MASK_OUTPUTMODE_SC_EN (1 << SS_SHIFT_OUTPUTMODE_SC_EN)
+ #define SS_CMDIDX_FIFOAFULL 0x01
+
+#define SS_FAM_R_OUTPUTFIFO 0x12
+ #define SS_CMDIDX_OUT_NUMSAMPLES 0x00
+ #define SS_CMDIDX_READFIFO 0x01
+
+#define SS_FAM_R_INPUTFIFO 0x13
+ #define SS_CMDIDX_SAMPLE_SIZE 0x00
+ #define SS_CMDIDX_INPUT_FIFO_SIZE 0x01
+ #define SS_CMDIDX_SENSOR_FIFO_SIZE 0x02
+ #define SS_CMDIDX_NUM_SAMPLES_SENSOR_FIFO 0x03
+ #define SS_CMDIDX_NUM_SAMPLES_INPUT_FIFO 0x04
+
+#define SS_FAM_W_INPUTFIFO 0x14
+ #define SS_CMDIDN_WRITEFIFO 0x00
+ #define SS_CMDIDX_WRITE_FIFO 0x00
+
+#define SS_FAM_W_WRITEREG 0x40
+#define SS_FAM_R_READREG 0x41
+#define SS_FAM_R_REGATTRIBS 0x42
+#define SS_FAM_R_DUMPREG 0x43
+
+#define SS_FAM_W_SENSORMODE 0x44
+#define SS_FAM_R_SENSORMODE 0x45
+
+//TODO: Fill in known configuration parameters
+#define SS_FAM_W_ALGOCONFIG 0x50
+#define SS_FAM_R_ALGOCONFIG 0x51
+ #define SS_CFGIDX_AGC_TARGET 0x00
+ #define SS_CFGIDX_AGC_CORR_COEFF 0x01
+ #define SS_CFGIDX_AGC_SENSITIVITY 0x02
+ #define SS_CFGIDX_AGC_SMP_AVG 0x03
+
+ #define SS_CFGIDX_WHRM_SR 0x00
+ #define SS_CFGIDX_WHRM_MAX_HEIGHT 0x01
+ #define SS_CFGIDX_WHRM_MAX_WEIGHT 0x02
+ #define SS_CFGIDX_WHRM_MAX_AGE 0x03
+ #define SS_CFGIDX_WHRM_MIN_HEIGHT 0x04
+ #define SS_CFGIDX_WHRM_MIN_WEIGHT 0x05
+ #define SS_CFGIDX_WHRM_MIN_AGE 0x06
+ #define SS_CFGIDX_WHRM_DEF_HEIGHT 0x07
+ #define SS_CFGIDX_WHRM_DEF_WEIGHT 0x08
+ #define SS_CFGIDX_WHRM_DEF_AGE 0x09
+ #define SS_CFGIDX_WHRM_INIT_HR 0x0A
+
+ #define SS_CFGIDX_BP_USE_MED 0x00
+ #define SS_CFGIDX_BP_SYS_BP_CAL 0x01
+ #define SS_CFGIDX_BP_DIA_BP_CAL 0x02
+ #define SS_CFGIDX_BP_CAL_DATA 0x03
+ #define SS_CFGIDX_BP_EST_DATE 0x04
+ #define SS_CFGIDX_BP_EST_NONREST 0x05
+
+#define SS_FAM_W_ALGOMODE 0x52
+#define SS_FAM_R_ALGOMODE 0x53
+
+#define SS_FAM_W_EXTERNSENSORMODE 0x60
+#define SS_FAM_R_EXTERNSENSORMODE 0x61
+
+#define SS_FAM_R_SELFTEST 0x70
+
+#define SS_FAM_W_BOOTLOADER 0x80
+ #define SS_CMDIDX_SETIV 0x00
+ #define SS_CMDIDX_SETAUTH 0x01
+ #define SS_CMDIDX_SETNUMPAGES 0x02
+ #define SS_CMDIDX_ERASE 0x03
+ #define SS_CMDIDX_SENDPAGE 0x04
+ #define SS_CMDIDX_ERASE_PAGE 0x05
+#define SS_FAM_R_BOOTLOADER 0x81
+ #define SS_CMDIDX_BOOTFWVERSION 0x00
+ #define SS_CMDIDX_PAGESIZE 0x01
+
+#define SS_FAM_W_BOOTLOADER_CFG 0x82
+#define SS_FAM_R_BOOTLOADER_CFG 0x83
+ #define SS_CMDIDX_BL_SAVE 0x00
+ #define SS_CMDIDX_BL_ENTRY 0x01
+ #define SS_BL_CFG_ENTER_BL_MODE 0x00
+ #define SS_BL_CFG_EBL_PIN 0x01
+ #define SS_BL_CFG_EBL_POL 0x02
+ #define SS_CMDIDX_BL_EXIT 0x02
+ #define SS_BL_CFG_EXIT_BL_MODE 0x00
+ #define SS_BL_CFG_TIMEOUT 0x01
+
+/* Enable logging/debugging */
+#define SS_FAM_R_LOG 0x90
+ #define SS_CMDIDX_R_LOG_DATA 0x00
+ #define SS_CMDIDX_R_LOG_LEN 0x01
+
+ #define SS_CMDIDX_R_LOG_LEVEL 0x02
+ #define SS_LOG_DISABLE 0x00
+ #define SS_LOG_CRITICAL 0x01
+ #define SS_LOG_ERROR 0x02
+ #define SS_LOG_INFO 0x04
+ #define SS_LOG_DEBUG 0x08
+
+#define SS_FAM_W_LOG_CFG 0x91
+ #define SS_CMDIDX_LOG_GET_LEVEL 0x00
+ #define SS_CMDIDX_LOG_SET_LEVEL 0x01
+
+#define SS_FAM_R_IDENTITY 0xFF
+ #define SS_CMDIDX_PLATTYPE 0x00
+ #define SS_CMDIDX_PARTID 0x01
+ #define SS_CMDIDX_REVID 0x02
+ #define SS_CMDIDX_FWVERSION 0x03
+ #define SS_CMDIDX_AVAILSENSORS 0x04
+ #define SS_CMDIDX_DRIVERVER 0x05
+ #define SS_CMDIDX_AVAILALGOS 0x06
+ #define SS_CMDIDX_ALGOVER 0x07
+
+
+/* Newly added ones; checko for collosion or repeats with the ones above */
+#define SS_RESET_TIME 10
+#define SS_STARTUP_TO_BTLDR_TIME 20
+#define SS_STARTUP_TO_MAIN_APP_TIME 1000
+
+#define SS_MAX_SUPPORTED_SENSOR_NUM 0xFE
+#define SS_MAX_SUPPORTED_ALGO_NUM 0xFE
+
+#define SS_APPPLICATION_MODE 0x00
+#define SS_BOOTLOADER_MODE 0x08
+
+typedef enum {
+ SS_SUCCESS =0x00,
+ SS_ERR_COMMAND =0x01,
+ SS_ERR_UNAVAILABLE =0x02,
+ SS_ERR_DATA_FORMAT =0x03,
+ SS_ERR_INPUT_VALUE =0x04,
+ SS_ERR_BTLDR_GENERAL =0x80,
+ SS_ERR_BTLDR_CHECKSUM =0x81,
+ SS_ERR_TRY_AGAIN =0xFE,
+ SS_ERR_UNKNOWN =0xFF,
+
+} SS_STATUS;
+
+
+
+/* ***************************************************************************************** *
+ * *
+ * SENSOR HUB COMMUNICATION INTERFACE ( Defined in MAX32664 User Guide ) API FUNCTIONS *
+ * *
+ * *
+ * ***************************************************************************************** */
+
+
+/**
+* @brief Func to write to sensor hub via sending generic command byte sequences
+*
+* @param[in] tx_buf - command byte sequence
+* @param[in] tx_len - command byte sequence length in bytes
+* @param[in] sleep_ms - time to wait for sensor hub to report statuss
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_write_cmd( uint8_t *tx_buf,
+ int tx_len,
+ int sleep_ms );
+
+
+/**
+* @brief Func to write to sensor hub via sending generic command byte sequences and data bytes
+*
+* @param[in] cmd_bytes - command byte sequence
+* @param[in] cmd_bytes_len - command byte sequence length in bytes
+* @param[in] data - data byte array to be sent following cmd bytes
+* @param[in] data_len - data array size in bytes
+* @param[in] cmd_delay_ms - time to wait for sensor hub to report status
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_write_cmd_with_data(uint8_t *cmd_bytes,
+ int cmd_bytes_len,
+ uint8_t *data,
+ int data_len,
+ int cmd_delay_ms);
+
+
+/**
+* @brief Func to read from sensor hub via sending generic command byte sequences
+*
+* @param[in] cmd_bytes - command byte sequence
+* @param[in] cmd_bytes_len - command byte sequence length in bytes
+* @param[in] data - data byte array to be sent following cmd bytes
+* @param[in] data_len - data array size in bytes
+* @param[out] rxbuf - byte buffer to store incoming data (including status byte)
+* @param[in] rxbuf_sz - incoming data buffer size in bytes ( to prevent overflow)
+* @param[in] cmd_delay_ms - time to wait for sensor hub to report status
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_read_cmd( uint8_t *cmd_bytes,
+ int cmd_bytes_len,
+ uint8_t *data,
+ int data_len,
+ uint8_t *rxbuf,
+ int rxbuf_sz,
+ int sleep_ms );
+
+
+/**
+* @brief func to read sensor hub status
+* @param[out] hubStatus - pointer to output byte sesnor hub status will be written
+* @details ensor hub status byte: [2:0] -> 0 : no Err , 1: comm failure with sensor
+ * [3] -> 0 : FIFO below threshold; 1: FIFO filled to threshold or above.
+ * [4] -> 0 : No FIFO overflow; 1: Sensor Hub Output FIFO overflowed, data lost.
+ * [5] -> 0 : No FIFO overflow; 1: Sensor Hub Input FIFO overflowed, data lost.
+ * [6] -> 0 : Sensor Hub ready; 1: Sensor Hub is busy processing.
+ * [6] -> reserved.
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_get_sensorhub_status(uint8_t *hubStatus);
+
+
+/**
+* @brief func to read sensor operating mode
+*
+* @param[in] hubMode - pointer to output byte mode will be written
+* @details 0x00: application operating mode
+* 0x08: bootloader operating mode
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_get_sensorhub_operating_mode(uint8_t *hubMode);
+
+
+/**
+* @brief func to set sensor hub operating mode
+*
+* @param[out] hubMode - pointer to output byte mode will be written
+* @details 0x00: application operating mode
+* 0x02: soft reset
+* 0x08: bootloader operating mode
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_set_sensorhub_operating_mode(uint8_t hubMode);
+
+
+/**
+* @brief func to set sensorhub data output mode
+*
+* @param[in] data_type : 1 byte output format
+* @details outpur format 0x00 : no data
+ * 0x01 : sensor data SS_DATATYPE_RAW
+ * 0x02 : algo data SS_DATATYPE_ALGO
+ * 0x03 : algo+sensor SS_DATATYPE_BOTH
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_set_data_type(int data_type, bool sc_en);
+
+
+/**
+* @brief func to get sensorhub data output mode
+*
+* @param[out] data_type - pointer to byte, output format will be written to.
+*
+* @param[out] sc_en - pointer to boolean, sample count enable/disable status format will be written to.
+* If true, SmartSensor is prepending data with 1 byte sample count.
+*
+* @details output format 0x00 : only algorithm data
+ * 0x01 : only raw sensor data
+ * 0x02 : algo + raw sensor data
+ * 0x03 : no data
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_get_data_type(int *data_type, bool *sc_en);
+
+
+/**
+ * @brief func to set the number of samples for the SmartSensor to collect
+ * before issuing an mfio event reporting interrupt
+ *
+ * @param[in] thresh - Number of samples (1-255) to collect before interrupt
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_set_fifo_thresh( int threshold );
+
+
+/**
+ * @brief func to get the number of samples the SmartSensor will collect
+ * before issuing an mfio event reporting interrupt
+ *
+ * @param[out] thresh - Number of samples (1-255) collected before interrupt
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_get_fifo_thresh(int *thresh);
+
+
+/**
+ * @brief func to check that the SmartSensor is connected
+ *
+ * @return 1 byte connection status 0x00: on connection
+ */
+int sh_ss_comm_check(void);
+
+
+/**
+* @brief func to get the number of available samples in SmartSensor output FIFO
+*
+* @param[out] numSamples - number of data struct samples (1-255)
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_num_avail_samples(int *numSamples);
+
+
+/**
+* @brief func to pull samples from SmartSensor output FIFO
+*
+* @param[in] numSamples - number of data struct samples to be pulled
+* @param[in] sampleSize - size of cumulative data sample struct (based on enabled sesnors+algorithms) in bytes
+* @param[out] databuf - buffer samples be written
+* @param[in] databufSize - size of provided buffer size samples to be written
+*
+* @return 1 byte status: 0x00 (SS_SUCCESS) on success
+*/
+int sh_read_fifo_data( int numSamples, int sampleSize, uint8_t* databuf, int databufSz);
+
+
+/**
+ * @brief func to set register of a device onboard SmartSensor
+ *
+ * @param[in] idx - Index of device to read
+ * @param[in] addr - Register address
+ * @param[in] val - Register value
+ * @param[in] regSz - Size of sensor device register in bytes
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_set_reg(int idx, uint8_t addr, uint32_t val, int regSz);
+
+
+/**
+ * @brief func to read register from a device onboard SmartSensor
+ *
+ * @param[in] idx - Index of device to read
+ * @param[in] addr - Register address
+ * @param[out] val - Register value
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_get_reg(int idx, uint8_t addr, uint32_t *val);
+
+
+// depricated: int sh_sensor_enable( int idx , int sensorSampleSz);
+/**
+ * @brief func to enable a sensor device onboard SmartSensor
+ *
+ * @param[in] idx - index of sensor device( i.e max8614x) to enable
+ * @param[in] sensorSampleSz - sample size of sensor device( i.e max8614x) to enable
+ * @param[in] ext_mode - enable extermal data input to Sensot Hub, ie accelerometer data for WHRM+WSPo2
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_sensor_enable( int idx , int sensorSampleSz , uint8_t ext_mode );
+
+
+/**
+ * @brief func to disable a device on the SmartSensor
+ *
+ * @param[in] idx - Index of device
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_sensor_disable( int idx );
+
+
+/**
+ * @brief func to get the total number of samples the input FIFO can hold
+ *
+ * @param[in] fifo_size - intger input FIFO capacity will be written to.
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_get_input_fifo_size(int *fifo_size);
+
+
+/**
+ * @brief func to send ass external sensor data (accelerometer) to sensor hub's input FIFO
+ *
+ * @param[in] tx_buf - host sample data to be send to sensor hub input FIFO
+ * @param[in] tx_buf_sz - number of bytes of tx_buf
+ * @param[out] nb_written - number of samples succesfully written to sensor hub's input FIFO
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_feed_to_input_fifo(uint8_t *tx_buf, int tx_buf_sz, int *nb_written);
+
+
+/**
+ * @brief func to get the total number of bytes in the sensor hub's input FIFO
+ *
+ * @param[in] fifo_size - total number of sample bytes available in input FIFO
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_get_num_bytes_in_input_fifo(int *fifo_size);
+
+
+/**
+ * @brief func to enable an algorithm on SmartSensor
+ *
+ * @param[in] idx - index of algorithm to enable
+ * @param[in] sensorSampleSz - sample size of algorithm to enable
+ *
+ * @details idx - 0x00 : AGC
+ * 0x01 : AEC
+ * 0x02 : WHRM/Maximfast
+ * 0x03 : ECG
+ * 0x04 : BPT
+ * 0x05 : SPo2
+ * 0x06 : HRM/Maximfast finger
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_enable_algo(int idx , int algoSampleSz);
+
+
+/**
+ * @brief func to disable an algorithm on the SmartSensor
+ *
+ * @param[in] idx - index of algorithm to disable
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_disable_algo(int idx);
+
+
+/**
+ * @brief func to set the value of an algorithm configuration parameter
+ *
+ * @param[in] algo_idx - index of algorithm
+ * @param[in] cfg_idx - index of configuration parameter
+ * @param[in] cfg Array - byte array of configuration
+ * @param[in] cfg_sz - size of cfg array
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_set_algo_cfg(int algo_idx, int cfg_idx, uint8_t *cfg, int cfg_sz);
+
+
+/**
+ * @brief func to get the value of an algorithm configuration parameter
+ *
+ * @param[in] algo_idx - index of algorithm
+ * @param[in] cfg_idx - index of configuration parameter
+ * @param[out] cfg - array of configuration bytes to be filled in
+ * @param[in] cfg_sz - number of configuration parameter bytes to be read
+ *
+ * @return 1 byte status (SS_STATUS) : 0x00 (SS_SUCCESS) on success
+ */
+int sh_get_algo_cfg(int algo_idx, int cfg_idx, uint8_t *cfg, int cfg_sz);
+
+/**
+ * @brief func to pull sensor, algo data sample bytes from sensor hub. outpur buffer, Content of the buffer depends on
+ * enabled sensors, algorithms and their sample sizes.
+ *
+ * @param[out] databuf - byte buffer to hold pulled samples
+ * @param[in] databufLen - size of provided databuf in bytes
+ * @param[out] nSamplesRea - number of pulled samples in databuf
+ *
+ * @return N/A
+ */
+void sh_ss_execute_once( uint8_t *databuf , int databufLen , int *nSamplesRead);
+
+
+
+
+
+
+
+/* *************************************************************************************** *
+ * DEMO SPECIFIC DECLERATIONS, NOT RELATED TO SENSOR HUB INTERFACE API. *
+ * *
+ * * *
+ ******************************************************************************************/
+
+void sh_init_hwcomm_interface();
+bool sh_has_mfio_event(void);
+void sh_enable_irq_mfioevent(void);
+void sh_disable_irq_mfioevent(void);
+void sh_clear_mfio_event_flag(void);
+int sh_hard_reset(int wakeupMode);
+
+extern uint8_t sh_write_buf[];
+
+/*
+#ifdef __cplusplus
+}
+#endif
+*/
+
+
+
+#endif /* _SENSOR_HUB_H */
+
+
+
+
+