Yasuhiro ISHII / MPU9150_DMP

Modified MPU9150 Library for Nucleo F303K8

Fork of MPU9150_DMP by Chris Pepper

MPU9150.cpp@3:ed487dfe5570, 2016-05-14 (annotated)

Committer:
yishii
Date:
Sat May 14 07:11:27 2016 +0000
Revision:
3:ed487dfe5570
Parent:
2:e523a92390b6 
Supported to  use sensor with Nucleo F3030K8

Who changed what in which revision?

UserRevisionLine numberNew contents of line
p3p 0:74f0ae286b03 1 #include "MPU9150.h"
p3p 0:74f0ae286b03 2
p3p 2:e523a92390b6 3 // Copyright (c) 2014 Chris Pepper
p3p 2:e523a92390b6 4
p3p 2:e523a92390b6 5 //The Firmware upload code was borrowed/modified from the sparkfun repository, which included this copyright
p3p 2:e523a92390b6 6 /* ============================================
p3p 2:e523a92390b6 7 I2Cdev device library code is placed under the MIT license
p3p 2:e523a92390b6 8 Copyright (c) 2012 Jeff Rowberg
p3p 2:e523a92390b6 9
p3p 2:e523a92390b6 10 Permission is hereby granted, free of charge, to any person obtaining a copy
p3p 2:e523a92390b6 11 of this software and associated documentation files (the "Software"), to deal
p3p 2:e523a92390b6 12 in the Software without restriction, including without limitation the rights
p3p 2:e523a92390b6 13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
p3p 2:e523a92390b6 14 copies of the Software, and to permit persons to whom the Software is
p3p 2:e523a92390b6 15 furnished to do so, subject to the following conditions:
p3p 2:e523a92390b6 16
p3p 2:e523a92390b6 17 The above copyright notice and this permission notice shall be included in
p3p 2:e523a92390b6 18 all copies or substantial portions of the Software.
p3p 2:e523a92390b6 19
p3p 2:e523a92390b6 20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
p3p 2:e523a92390b6 21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
p3p 2:e523a92390b6 22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
p3p 2:e523a92390b6 23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
p3p 2:e523a92390b6 24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
p3p 2:e523a92390b6 25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
p3p 2:e523a92390b6 26 THE SOFTWARE.
p3p 2:e523a92390b6 27 ===============================================
p3p 2:e523a92390b6 28 */
p3p 2:e523a92390b6 29
yishii 3:ed487dfe5570 30 extern Serial pc;
p3p 2:e523a92390b6 31
p3p 0:74f0ae286b03 32 uint8_t MPU9150::getDeviceID(){
p3p 0:74f0ae286b03 33 uint8_t ret = 0;
p3p 0:74f0ae286b03 34 readBits(MPU6050_RA_WHO_AM_I, MPU6050_WHO_AM_I_BIT, MPU6050_WHO_AM_I_LENGTH, &ret);
p3p 0:74f0ae286b03 35 return ret;
p3p 0:74f0ae286b03 36 }
p3p 0:74f0ae286b03 37
p3p 0:74f0ae286b03 38 bool MPU9150::isReady(){
yishii 3:ed487dfe5570 39 //pc.printf("GetDeviceID = %02Xh, expected = %02Xh\r\n",getDeviceID(),(device_address >> 1));
yishii 3:ed487dfe5570 40 //return (getDeviceID() == (device_address >> 1));
yishii 3:ed487dfe5570 41 //pc.printf("GetDeviceID = %02Xh, expected = %02Xh\r\n",getDeviceID(),0x71>>1);
yishii 3:ed487dfe5570 42 return (getDeviceID() == 0x71>>1);
p3p 0:74f0ae286b03 43 }
p3p 0:74f0ae286b03 44
p3p 0:74f0ae286b03 45 void MPU9150::initialise(){
p3p 0:74f0ae286b03 46 reset();
p3p 0:74f0ae286b03 47 wait_ms(20);//wait for reset
p3p 0:74f0ae286b03 48
p3p 0:74f0ae286b03 49 sleep(false);
p3p 0:74f0ae286b03 50 clockSelect(MPU6050_CLOCK_PLL_XGYRO); //use the gyro clock as its more reliable
p3p 0:74f0ae286b03 51 setGyroFullScaleRange(MPU6050_GYRO_FS_250);
p3p 0:74f0ae286b03 52 setAccelFullScaleRange(MPU6050_ACCEL_FS_2);
p3p 0:74f0ae286b03 53 setStandbyAccX(true);
p3p 0:74f0ae286b03 54 setI2CMasterClock(MPU6050_CLOCK_DIV_400);
p3p 0:74f0ae286b03 55 setDigitalLowPassFilter(MPU6050_DLPF_BW_42);
p3p 0:74f0ae286b03 56 setSampleRateDivider(4);
p3p 0:74f0ae286b03 57
p3p 0:74f0ae286b03 58 initialiseMagnetometer();
p3p 0:74f0ae286b03 59
p3p 0:74f0ae286b03 60 setFifoReset(true);
p3p 0:74f0ae286b03 61
p3p 0:74f0ae286b03 62 setTemperatureFifo(true);
p3p 0:74f0ae286b03 63 setAccelFifo(true);
p3p 0:74f0ae286b03 64 setGyroFifo(true);
p3p 0:74f0ae286b03 65 setSlave0Fifo(true);
p3p 0:74f0ae286b03 66
p3p 0:74f0ae286b03 67 setInterruptDataReadyEnable(true);
p3p 0:74f0ae286b03 68 setEnableFifo(true);
p3p 0:74f0ae286b03 69 }
p3p 0:74f0ae286b03 70
p3p 0:74f0ae286b03 71 void MPU9150::initialiseMagnetometer(){
p3p 0:74f0ae286b03 72 //set up slave 0 to read the magnetometor data
p3p 0:74f0ae286b03 73 setWaitForExternalSensor(true);
p3p 0:74f0ae286b03 74 //read data
p3p 0:74f0ae286b03 75 setI2cSlaveRW(0, true);
p3p 0:74f0ae286b03 76 setI2cSlaveAddress(0, 0x0C);
p3p 0:74f0ae286b03 77 setI2cSlaveRegister(0, 3);
p3p 0:74f0ae286b03 78 setI2cSlaveEnable(0, true);
p3p 0:74f0ae286b03 79 setI2cSlaveTransactionLength(0, 6);
p3p 0:74f0ae286b03 80
p3p 0:74f0ae286b03 81
p3p 0:74f0ae286b03 82 //set up slave 1 to request a new magnetometor reading by writing 0x01 to 0xA
p3p 0:74f0ae286b03 83 setI2cSlaveAddress(1, 0x0C);
p3p 0:74f0ae286b03 84 setI2cSlaveRegister(1, 0x0A);
p3p 0:74f0ae286b03 85 setI2cSlaveTransactionLength(1, 1);
p3p 0:74f0ae286b03 86 setI2cSlaveEnable(1, true);
p3p 0:74f0ae286b03 87 setI2cSlaveDataOut(1, 1);
p3p 0:74f0ae286b03 88
p3p 0:74f0ae286b03 89 //configure update rates
p3p 0:74f0ae286b03 90 setI2cMasterDelay(4);
p3p 0:74f0ae286b03 91 setI2cSlaveDelay(0, true);
p3p 0:74f0ae286b03 92 setI2cSlaveDelay(1, true);
p3p 0:74f0ae286b03 93
p3p 0:74f0ae286b03 94 //Enable the aux i2c bus with MPU9150 as master
p3p 0:74f0ae286b03 95 setI2cMasterEnable(true);
p3p 0:74f0ae286b03 96 }
p3p 0:74f0ae286b03 97
p3p 0:74f0ae286b03 98 void MPU9150::initialiseDMP(){
p3p 0:74f0ae286b03 99 reset();
p3p 0:74f0ae286b03 100 wait_ms(20);
p3p 0:74f0ae286b03 101 sleep(false);
p3p 0:74f0ae286b03 102
p3p 0:74f0ae286b03 103 setMemoryBank(0x10, true, true);
p3p 0:74f0ae286b03 104 setMemoryStartAddress(0x06);
p3p 1:8ff0beb54dd4 105 // debug.printf("Hardware Version: %d\r\n", readMemoryByte());
p3p 0:74f0ae286b03 106
p3p 0:74f0ae286b03 107 setMemoryBank(0);
p3p 0:74f0ae286b03 108 // check OTP bank valid
p3p 0:74f0ae286b03 109 uint8_t otpValid = getOTPBankValid();
p3p 1:8ff0beb54dd4 110 // debug.printf("optValid: %d\r\n", otpValid);
p3p 0:74f0ae286b03 111
p3p 0:74f0ae286b03 112 //Enabling interrupt latch, clear on any read, AUX bypass enabled
p3p 0:74f0ae286b03 113 write(MPU6050_RA_INT_PIN_CFG, 0x32);
p3p 0:74f0ae286b03 114
p3p 0:74f0ae286b03 115 if (writeMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE, 0 ,0, true)) {
p3p 1:8ff0beb54dd4 116 // debug.printf("Success! DMP code written and verified.\r\n");
p3p 0:74f0ae286b03 117 if (writeDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE)) {
p3p 1:8ff0beb54dd4 118 // debug.printf("Success! DMP configuration written and verified.\r\n");
p3p 0:74f0ae286b03 119 setIntDMPEnabled(true);
p3p 0:74f0ae286b03 120 setInterruptFifoOverflowEnable(true);
p3p 0:74f0ae286b03 121 setSampleRateDivider(4);
p3p 0:74f0ae286b03 122 clockSelect(MPU6050_CLOCK_PLL_XGYRO);
p3p 0:74f0ae286b03 123 setDigitalLowPassFilter(MPU6050_DLPF_BW_42);
p3p 0:74f0ae286b03 124 setGyroFullScaleRange(MPU6050_GYRO_FS_2000);
p3p 0:74f0ae286b03 125
p3p 0:74f0ae286b03 126 setExternalFrameSync(MPU6050_EXT_SYNC_TEMP_OUT_L);
p3p 0:74f0ae286b03 127 setDMPConfig1(0x03);
p3p 0:74f0ae286b03 128 setDMPConfig2(0x00);
p3p 0:74f0ae286b03 129
p3p 0:74f0ae286b03 130 unsigned char *update_ptr = (unsigned char*)dmpUpdates;
p3p 0:74f0ae286b03 131 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 132 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 133 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 134
p3p 0:74f0ae286b03 135 setFifoReset(true);
p3p 0:74f0ae286b03 136
p3p 0:74f0ae286b03 137 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 138 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 139 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 140 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 141
p3p 0:74f0ae286b03 142 write(MPU6050_RA_PWR_MGMT_2, 0x00);
p3p 0:74f0ae286b03 143 setInterruptAnyReadClear(true);
p3p 0:74f0ae286b03 144 setInterruptLatch(true);
p3p 0:74f0ae286b03 145
p3p 0:74f0ae286b03 146 setI2cSlaveRW(0, true);
p3p 0:74f0ae286b03 147 setI2cSlaveAddress(0, 0x0C);
p3p 0:74f0ae286b03 148 setI2cSlaveRegister(0, 1);
p3p 0:74f0ae286b03 149 setI2cSlaveEnable(0, true);
p3p 0:74f0ae286b03 150 setI2cSlaveTransactionLength(0, 10);
p3p 0:74f0ae286b03 151
p3p 0:74f0ae286b03 152 //set up slave 1 to request a new magnetometor reading by writing 0x01 to 0xA
p3p 0:74f0ae286b03 153 setI2cSlaveAddress(2, 0x0C);
p3p 0:74f0ae286b03 154 setI2cSlaveRegister(2, 0x0A);
p3p 0:74f0ae286b03 155 setI2cSlaveTransactionLength(2, 1);
p3p 0:74f0ae286b03 156 setI2cSlaveEnable(2, true);
p3p 0:74f0ae286b03 157 setI2cSlaveDataOut(2, 1);
p3p 0:74f0ae286b03 158
p3p 0:74f0ae286b03 159 //configure update rates
p3p 0:74f0ae286b03 160 setI2cMasterDelay(4);
p3p 0:74f0ae286b03 161 setI2cSlaveDelay(0, true);
p3p 0:74f0ae286b03 162 setI2cSlaveDelay(2, true);
p3p 0:74f0ae286b03 163
p3p 0:74f0ae286b03 164 //Enable the aux i2c bus with MPU9150 as master
p3p 0:74f0ae286b03 165 setI2cMasterEnable(true);
p3p 0:74f0ae286b03 166
p3p 0:74f0ae286b03 167 write(MPU6050_RA_INT_PIN_CFG, 0x00);
p3p 0:74f0ae286b03 168
p3p 0:74f0ae286b03 169 // enable I2C master mode and reset DMP/FIFO
p3p 0:74f0ae286b03 170 //DEBUG_PRINTLN(F("Enabling I2C master mode..."));
p3p 0:74f0ae286b03 171 write( MPU6050_RA_USER_CTRL, 0x20);
p3p 0:74f0ae286b03 172 //DEBUG_PRINTLN(F("Resetting FIFO..."));
p3p 0:74f0ae286b03 173 write(MPU6050_RA_USER_CTRL, 0x24);
p3p 0:74f0ae286b03 174 //DEBUG_PRINTLN(F("Rewriting I2C master mode enabled because...I don't know"));
p3p 0:74f0ae286b03 175 write(MPU6050_RA_USER_CTRL, 0x20);
p3p 0:74f0ae286b03 176 //DEBUG_PRINTLN(F("Enabling and resetting DMP/FIFO..."));
p3p 0:74f0ae286b03 177 write(MPU6050_RA_USER_CTRL, 0xE8);
p3p 0:74f0ae286b03 178
p3p 0:74f0ae286b03 179 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 180 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 181 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 182 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 183 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 184 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 185 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 186 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 187 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 188 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 189 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 190 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 191 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 192 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 193
p3p 0:74f0ae286b03 194 //read?
p3p 0:74f0ae286b03 195 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 196 //stalls?
p3p 0:74f0ae286b03 197 //readMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1]);
p3p 0:74f0ae286b03 198
p3p 0:74f0ae286b03 199
p3p 0:74f0ae286b03 200 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 201 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 202 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 203 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 204 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 205 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 206 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 207 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 208 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 209 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 210
p3p 0:74f0ae286b03 211 int fifoCount = 0;
p3p 0:74f0ae286b03 212 while ((fifoCount = getFifoCount()) < 46);
p3p 0:74f0ae286b03 213 uint8_t buffer[128];
p3p 0:74f0ae286b03 214 getFifoBuffer((char *)buffer, fifoCount);
p3p 0:74f0ae286b03 215 getInterruptStatus();
p3p 0:74f0ae286b03 216
p3p 0:74f0ae286b03 217 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 218 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 219
p3p 0:74f0ae286b03 220 fifoCount = 0;
p3p 0:74f0ae286b03 221 while ((fifoCount = getFifoCount()) < 48);
p3p 0:74f0ae286b03 222 getFifoBuffer((char *)buffer, fifoCount);
p3p 0:74f0ae286b03 223 getInterruptStatus();
p3p 0:74f0ae286b03 224 fifoCount = 0;
p3p 0:74f0ae286b03 225 while ((fifoCount = getFifoCount()) < 48);
p3p 0:74f0ae286b03 226 getFifoBuffer((char *)buffer, fifoCount);
p3p 0:74f0ae286b03 227 getInterruptStatus();
p3p 0:74f0ae286b03 228
p3p 0:74f0ae286b03 229 update_ptr += update_ptr[2] + 3;
p3p 0:74f0ae286b03 230 writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true);
p3p 0:74f0ae286b03 231
p3p 0:74f0ae286b03 232 setDMPEnabled(false);
p3p 0:74f0ae286b03 233
p3p 1:8ff0beb54dd4 234 // debug.printf("finished\r\n");
p3p 0:74f0ae286b03 235
p3p 0:74f0ae286b03 236 }
p3p 0:74f0ae286b03 237 }
p3p 0:74f0ae286b03 238
p3p 0:74f0ae286b03 239
p3p 0:74f0ae286b03 240 }
p3p 0:74f0ae286b03 241
p3p 0:74f0ae286b03 242 //PWR_MGMT_1 Control Register
p3p 0:74f0ae286b03 243 //*****************************/
p3p 0:74f0ae286b03 244 void MPU9150::reset(){
p3p 0:74f0ae286b03 245 writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_DEVICE_RESET_BIT, true);
p3p 0:74f0ae286b03 246 }
p3p 0:74f0ae286b03 247
p3p 0:74f0ae286b03 248 void MPU9150::sleep(bool state){
p3p 0:74f0ae286b03 249 writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_SLEEP_BIT, state);
p3p 0:74f0ae286b03 250 }
p3p 0:74f0ae286b03 251
p3p 0:74f0ae286b03 252 /*
p3p 0:74f0ae286b03 253 cycle between sleep mode and waking up to take a single sample of data from
p3p 0:74f0ae286b03 254 active sensors at a rate determined by LP_WAKE_CTRL (register 108).
p3p 0:74f0ae286b03 255 */
p3p 0:74f0ae286b03 256 void MPU9150::cycleMode(bool state){
p3p 0:74f0ae286b03 257 writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CYCLE_BIT, state);
p3p 0:74f0ae286b03 258 }
p3p 0:74f0ae286b03 259 void MPU9150::disableTemperatureSensor(bool state){
p3p 0:74f0ae286b03 260 writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_TEMP_DIS_BIT, state);
p3p 0:74f0ae286b03 261 }
p3p 0:74f0ae286b03 262 void MPU9150::clockSelect(uint8_t clk){
p3p 0:74f0ae286b03 263 writeBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CLKSEL_BIT, MPU6050_PWR1_CLKSEL_LENGTH, clk);
p3p 0:74f0ae286b03 264 }
p3p 0:74f0ae286b03 265
p3p 0:74f0ae286b03 266 //PWR_MGMT_2 Control Register
p3p 0:74f0ae286b03 267 //*****************************/
p3p 0:74f0ae286b03 268 void MPU9150::setCycleWakeFrequency(uint8_t freq){
p3p 0:74f0ae286b03 269 writeBits(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_LP_WAKE_CTRL_BIT, MPU6050_PWR2_LP_WAKE_CTRL_LENGTH, freq);
p3p 0:74f0ae286b03 270 }
p3p 0:74f0ae286b03 271 void MPU9150::setStandbyAccX(bool value){
p3p 0:74f0ae286b03 272 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_XA_BIT, value);
p3p 0:74f0ae286b03 273 }
p3p 0:74f0ae286b03 274 void MPU9150::setStandbyAccY(bool value){
p3p 0:74f0ae286b03 275 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_YA_BIT, value);
p3p 0:74f0ae286b03 276 }
p3p 0:74f0ae286b03 277 void MPU9150::setStandbyAccZ(bool value){
p3p 0:74f0ae286b03 278 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_ZA_BIT, value);
p3p 0:74f0ae286b03 279 }
p3p 0:74f0ae286b03 280 void MPU9150::setStandbyGyroX( bool value){
p3p 0:74f0ae286b03 281 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_XG_BIT, value);
p3p 0:74f0ae286b03 282 }
p3p 0:74f0ae286b03 283 void MPU9150::setStandbyGyroY( bool value){
p3p 0:74f0ae286b03 284 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_YG_BIT, value);
p3p 0:74f0ae286b03 285 }
p3p 0:74f0ae286b03 286 void MPU9150::setStandbyGyroZ( bool value){
p3p 0:74f0ae286b03 287 writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_ZG_BIT, value);
p3p 0:74f0ae286b03 288 }
p3p 0:74f0ae286b03 289
p3p 0:74f0ae286b03 290 //SMPRT_DIV Sample Rate Divider
p3p 0:74f0ae286b03 291 //*****************************/
p3p 0:74f0ae286b03 292 void MPU9150::setSampleRateDivider(uint8_t value){
p3p 0:74f0ae286b03 293 write(MPU6050_RA_SMPLRT_DIV, value);
p3p 0:74f0ae286b03 294 }
p3p 0:74f0ae286b03 295
p3p 0:74f0ae286b03 296 //CONFIG
p3p 0:74f0ae286b03 297 void MPU9150::setExternalFrameSync(uint8_t value){
p3p 0:74f0ae286b03 298 writeBits(MPU6050_RA_CONFIG, MPU6050_CFG_EXT_SYNC_SET_BIT, MPU6050_CFG_EXT_SYNC_SET_LENGTH, value);
p3p 0:74f0ae286b03 299 }
p3p 0:74f0ae286b03 300 void MPU9150::setDigitalLowPassFilter(uint8_t value){
p3p 0:74f0ae286b03 301 writeBits(MPU6050_RA_CONFIG, MPU6050_CFG_DLPF_CFG_BIT, MPU6050_CFG_DLPF_CFG_LENGTH, value);
p3p 0:74f0ae286b03 302 }
p3p 0:74f0ae286b03 303
p3p 0:74f0ae286b03 304 //GYRO_CONFIG
p3p 0:74f0ae286b03 305 void MPU9150::setGyroSelfTest(bool value){
p3p 0:74f0ae286b03 306 writeBit(MPU6050_RA_GYRO_CONFIG, 7, value); //X
p3p 0:74f0ae286b03 307 writeBit(MPU6050_RA_GYRO_CONFIG, 6, value); //Y
p3p 0:74f0ae286b03 308 writeBit(MPU6050_RA_GYRO_CONFIG, 5, value); //Z
p3p 0:74f0ae286b03 309 }
p3p 0:74f0ae286b03 310
p3p 0:74f0ae286b03 311 void MPU9150::setGyroFullScaleRange(uint8_t value){
p3p 0:74f0ae286b03 312 writeBits(MPU6050_RA_GYRO_CONFIG, MPU6050_GCONFIG_FS_SEL_BIT, MPU6050_GCONFIG_FS_SEL_LENGTH, value);
p3p 0:74f0ae286b03 313 }
p3p 0:74f0ae286b03 314
p3p 0:74f0ae286b03 315 //ACCEL_CONFIG
p3p 0:74f0ae286b03 316 void MPU9150::setAccelSelfTest(bool value){
p3p 0:74f0ae286b03 317 writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_XA_ST_BIT, value);
p3p 0:74f0ae286b03 318 writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_YA_ST_BIT, value);
p3p 0:74f0ae286b03 319 writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_ZA_ST_BIT, value);
p3p 0:74f0ae286b03 320 }
p3p 0:74f0ae286b03 321 void MPU9150::setAccelFullScaleRange(uint8_t value){
p3p 0:74f0ae286b03 322 writeBits(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_AFS_SEL_BIT , MPU6050_ACONFIG_AFS_SEL_LENGTH, value);
p3p 0:74f0ae286b03 323 }
p3p 0:74f0ae286b03 324
p3p 0:74f0ae286b03 325 //FIFO_EN
p3p 0:74f0ae286b03 326 void MPU9150::setTemperatureFifo(bool value){
p3p 0:74f0ae286b03 327 writeBit(MPU6050_RA_FIFO_EN, MPU6050_TEMP_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 328 }
p3p 0:74f0ae286b03 329 void MPU9150::setGyroFifo(bool value){
p3p 0:74f0ae286b03 330 writeBit(MPU6050_RA_FIFO_EN, MPU6050_XG_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 331 writeBit(MPU6050_RA_FIFO_EN, MPU6050_YG_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 332 writeBit(MPU6050_RA_FIFO_EN, MPU6050_ZG_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 333 }
p3p 0:74f0ae286b03 334 void MPU9150::setAccelFifo(bool value){
p3p 0:74f0ae286b03 335 writeBit(MPU6050_RA_FIFO_EN, MPU6050_ACCEL_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 336 }
p3p 0:74f0ae286b03 337 void MPU9150::setSlave2Fifo(bool value){
p3p 0:74f0ae286b03 338 writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV2_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 339 }
p3p 0:74f0ae286b03 340 void MPU9150::setSlave1Fifo(bool value){
p3p 0:74f0ae286b03 341 writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV1_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 342 }
p3p 0:74f0ae286b03 343 void MPU9150::setSlave0Fifo(bool value){
p3p 0:74f0ae286b03 344 writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV0_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 345 }
p3p 0:74f0ae286b03 346
p3p 0:74f0ae286b03 347 //I2C_MST_CTRL
p3p 0:74f0ae286b03 348 void MPU9150::setMultiMaster(bool value){
p3p 0:74f0ae286b03 349 writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_MULT_MST_EN_BIT, value);
p3p 0:74f0ae286b03 350 }
p3p 0:74f0ae286b03 351 void MPU9150::setWaitForExternalSensor(bool value){
p3p 0:74f0ae286b03 352 writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_WAIT_FOR_ES_BIT, value);
p3p 0:74f0ae286b03 353 }
p3p 0:74f0ae286b03 354 void MPU9150::setSlave3Fifo(bool value){
p3p 0:74f0ae286b03 355 writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_SLV_3_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 356 }
p3p 0:74f0ae286b03 357 void MPU9150::setMasterStartStop(bool value){
p3p 0:74f0ae286b03 358 writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_I2C_MST_P_NSR_BIT, value);
p3p 0:74f0ae286b03 359 }
p3p 0:74f0ae286b03 360 void MPU9150::setI2CMasterClock(uint8_t value){
p3p 0:74f0ae286b03 361 writeBits(MPU6050_RA_I2C_MST_CTRL, MPU6050_I2C_MST_CLK_BIT, MPU6050_I2C_MST_CLK_LENGTH, value);
p3p 0:74f0ae286b03 362 }
p3p 0:74f0ae286b03 363
p3p 0:74f0ae286b03 364 //I2C slaves 0 to 3
p3p 0:74f0ae286b03 365 //I2C_SLV0_ADDR
p3p 0:74f0ae286b03 366 void MPU9150::setI2cSlaveRW(uint8_t slave_id, bool value){
p3p 0:74f0ae286b03 367 if(slave_id > 3)return;
p3p 0:74f0ae286b03 368 writeBit(MPU6050_RA_I2C_SLV0_ADDR + (slave_id * 3), MPU6050_I2C_SLV_RW_BIT, value);
p3p 0:74f0ae286b03 369 }
p3p 0:74f0ae286b03 370 void MPU9150::setI2cSlaveAddress(uint8_t slave_id, uint8_t value){
p3p 0:74f0ae286b03 371 if(slave_id > 3)return;
p3p 0:74f0ae286b03 372 writeBits(MPU6050_RA_I2C_SLV0_ADDR + (slave_id * 3), MPU6050_I2C_SLV_ADDR_BIT, MPU6050_I2C_SLV_ADDR_LENGTH, value);
p3p 0:74f0ae286b03 373 }
p3p 0:74f0ae286b03 374 //I2C_SLV0_REG,
p3p 0:74f0ae286b03 375 void MPU9150::setI2cSlaveRegister(uint8_t slave_id, uint8_t value){
p3p 0:74f0ae286b03 376 if(slave_id > 3)return;
p3p 0:74f0ae286b03 377 write(MPU6050_RA_I2C_SLV0_REG + (slave_id * 3), value);
p3p 0:74f0ae286b03 378 }
p3p 0:74f0ae286b03 379 //I2C_SLV0_CTRL
p3p 0:74f0ae286b03 380 void MPU9150::setI2cSlaveEnable(uint8_t slave_id, bool value){
p3p 0:74f0ae286b03 381 if(slave_id > 3)return;
p3p 0:74f0ae286b03 382 writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_EN_BIT, value);
p3p 0:74f0ae286b03 383 }
p3p 0:74f0ae286b03 384 void MPU9150::setI2cSlaveByteSwap(uint8_t slave_id, bool value){
p3p 0:74f0ae286b03 385 if(slave_id > 3)return;
p3p 0:74f0ae286b03 386 writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_BYTE_SW_BIT, value);
p3p 0:74f0ae286b03 387 }
p3p 0:74f0ae286b03 388 void MPU9150::setI2cSlaveRegDisable(uint8_t slave_id, bool value){
p3p 0:74f0ae286b03 389 if(slave_id > 3)return;
p3p 0:74f0ae286b03 390 writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_REG_DIS_BIT, value);
p3p 0:74f0ae286b03 391 }
p3p 0:74f0ae286b03 392 void MPU9150::setI2cSlaveByteGrouping(uint8_t slave_id, bool value){
p3p 0:74f0ae286b03 393 if(slave_id > 3)return;
p3p 0:74f0ae286b03 394 writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_GRP_BIT, value);
p3p 0:74f0ae286b03 395 }
p3p 0:74f0ae286b03 396 void MPU9150::setI2cSlaveTransactionLength(uint8_t slave_id, uint8_t value){
p3p 0:74f0ae286b03 397 if(slave_id > 3)return;
p3p 0:74f0ae286b03 398 writeBits(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_LEN_BIT, MPU6050_I2C_SLV_LEN_LENGTH, value);
p3p 0:74f0ae286b03 399 }
p3p 0:74f0ae286b03 400 //I2C_SLV0_DO
p3p 0:74f0ae286b03 401 void MPU9150::setI2cSlaveDataOut(uint8_t slave_id, uint8_t value){
p3p 0:74f0ae286b03 402 if(slave_id > 3)return;
p3p 0:74f0ae286b03 403 write(MPU6050_RA_I2C_SLV0_DO + slave_id, value);
p3p 0:74f0ae286b03 404 }
p3p 0:74f0ae286b03 405 //I2C_MST_DELAY_CTRL
p3p 0:74f0ae286b03 406 void MPU9150::setI2cSlaveDelay(uint8_t slave_id, uint8_t value){
p3p 0:74f0ae286b03 407 writeBit(MPU6050_RA_I2C_MST_DELAY_CTRL, slave_id, value);
p3p 0:74f0ae286b03 408 }
p3p 0:74f0ae286b03 409 void MPU9150::setI2cSlaveShadowDelay(uint8_t value){
p3p 0:74f0ae286b03 410 writeBit(MPU6050_RA_I2C_MST_DELAY_CTRL, 7, value);
p3p 0:74f0ae286b03 411 }
p3p 0:74f0ae286b03 412
p3p 0:74f0ae286b03 413 //I2C slave4
p3p 0:74f0ae286b03 414 //I2C_SLV4_ADDR
p3p 0:74f0ae286b03 415 void MPU9150::setI2cSlave4RW( bool value){
p3p 0:74f0ae286b03 416 writeBit(MPU6050_RA_I2C_SLV4_ADDR, MPU6050_I2C_SLV4_RW_BIT, value);
p3p 0:74f0ae286b03 417 }
p3p 0:74f0ae286b03 418 void MPU9150::setI2cSlave4Address( uint8_t value){
p3p 0:74f0ae286b03 419 writeBits(MPU6050_RA_I2C_SLV4_ADDR, MPU6050_I2C_SLV4_ADDR_BIT, MPU6050_I2C_SLV4_ADDR_LENGTH, value);
p3p 0:74f0ae286b03 420 }
p3p 0:74f0ae286b03 421 //I2C_SLV4_REG,
p3p 0:74f0ae286b03 422 void MPU9150::setI2cSlave4Register(uint8_t value){
p3p 0:74f0ae286b03 423 write(MPU6050_RA_I2C_SLV4_REG, value);
p3p 0:74f0ae286b03 424 }
p3p 0:74f0ae286b03 425 //I2C_SLV4_DO
p3p 0:74f0ae286b03 426 void MPU9150::setI2cSlave4DataOut(uint8_t value){
p3p 0:74f0ae286b03 427 write(MPU6050_RA_I2C_SLV4_DO, value);
p3p 0:74f0ae286b03 428 }
p3p 0:74f0ae286b03 429
p3p 0:74f0ae286b03 430 //I2C_SLV4_CTRL
p3p 0:74f0ae286b03 431 void MPU9150::setI2cSlave4Enable(bool value){
p3p 0:74f0ae286b03 432 writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_EN_BIT, value);
p3p 0:74f0ae286b03 433 }
p3p 0:74f0ae286b03 434
p3p 0:74f0ae286b03 435 void MPU9150::setI2cSlave4IntEnable(bool value){
p3p 0:74f0ae286b03 436 writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_INT_EN_BIT, value);
p3p 0:74f0ae286b03 437 }
p3p 0:74f0ae286b03 438
p3p 0:74f0ae286b03 439 void MPU9150::setI2cSlave4RegDisable(bool value){
p3p 0:74f0ae286b03 440 writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_REG_DIS_BIT, value);
p3p 0:74f0ae286b03 441 }
p3p 0:74f0ae286b03 442
p3p 0:74f0ae286b03 443 void MPU9150::setI2cMasterDelay(uint8_t value){
p3p 0:74f0ae286b03 444 writeBits(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_MST_DLY_BIT, MPU6050_I2C_SLV4_MST_DLY_LENGTH, value);
p3p 0:74f0ae286b03 445 }
p3p 0:74f0ae286b03 446
p3p 0:74f0ae286b03 447 uint8_t MPU9150::getI2cSlave4Di(){
p3p 0:74f0ae286b03 448 return get8(MPU6050_RA_I2C_SLV4_DI);
p3p 0:74f0ae286b03 449 }
p3p 0:74f0ae286b03 450
p3p 0:74f0ae286b03 451 //I2C_MST_STATUS
p3p 0:74f0ae286b03 452 bool MPU9150::setI2cPassthrough(){
p3p 0:74f0ae286b03 453 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_PASS_THROUGH_BIT);
p3p 0:74f0ae286b03 454 }
p3p 0:74f0ae286b03 455 bool MPU9150::setI2cSlave4Done(){
p3p 0:74f0ae286b03 456 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV4_DONE_BIT);
p3p 0:74f0ae286b03 457 }
p3p 0:74f0ae286b03 458 bool MPU9150::setI2cLostArbitration(){
p3p 0:74f0ae286b03 459 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_LOST_ARB_BIT);
p3p 0:74f0ae286b03 460 }
p3p 0:74f0ae286b03 461 bool MPU9150::setI2cSlave0Nack(){
p3p 0:74f0ae286b03 462 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV0_NACK_BIT);
p3p 0:74f0ae286b03 463 }
p3p 0:74f0ae286b03 464 bool MPU9150::setI2cSlave1Nack(){
p3p 0:74f0ae286b03 465 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV1_NACK_BIT);
p3p 0:74f0ae286b03 466 }
p3p 0:74f0ae286b03 467 bool MPU9150::setI2cSlave2Nack(){
p3p 0:74f0ae286b03 468 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV2_NACK_BIT);
p3p 0:74f0ae286b03 469 }
p3p 0:74f0ae286b03 470 bool MPU9150::setI2cSlave3Nack(){
p3p 0:74f0ae286b03 471 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV3_NACK_BIT);
p3p 0:74f0ae286b03 472 }
p3p 0:74f0ae286b03 473 bool MPU9150::setI2cSlave4Nack(){
p3p 0:74f0ae286b03 474 return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV4_NACK_BIT);
p3p 0:74f0ae286b03 475 }
p3p 0:74f0ae286b03 476
p3p 0:74f0ae286b03 477 //INT_PIN_CFG
p3p 0:74f0ae286b03 478 void MPU9150::setInterruptActiveLow(bool value){
p3p 0:74f0ae286b03 479 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_LEVEL_BIT, value);
p3p 0:74f0ae286b03 480 }
p3p 0:74f0ae286b03 481 void MPU9150::setInterruptOpenDrain(bool value){
p3p 0:74f0ae286b03 482 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_OPEN_BIT, value);
p3p 0:74f0ae286b03 483 }
p3p 0:74f0ae286b03 484 void MPU9150::setInterruptLatch(bool value){
p3p 0:74f0ae286b03 485 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_LATCH_INT_EN_BIT, value);
p3p 0:74f0ae286b03 486 }
p3p 0:74f0ae286b03 487 void MPU9150::setInterruptAnyReadClear(bool value){
p3p 0:74f0ae286b03 488 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_RD_CLEAR_BIT, value);
p3p 0:74f0ae286b03 489 }
p3p 0:74f0ae286b03 490 void MPU9150::setFsyncInterruptActiveLow(bool value){
p3p 0:74f0ae286b03 491 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_FSYNC_INT_LEVEL_BIT, value);
p3p 0:74f0ae286b03 492 }
p3p 0:74f0ae286b03 493 void MPU9150::setFsyncInterruptEnable(bool value){
p3p 0:74f0ae286b03 494 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_FSYNC_INT_EN_BIT, value);
p3p 0:74f0ae286b03 495 }
p3p 0:74f0ae286b03 496 void MPU9150::setI2cAuxBypassEnable(bool value){
p3p 0:74f0ae286b03 497 writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_I2C_BYPASS_EN_BIT, value);
p3p 0:74f0ae286b03 498 }
p3p 0:74f0ae286b03 499
p3p 0:74f0ae286b03 500 //INT_ENABLE
p3p 0:74f0ae286b03 501 void MPU9150::setInterruptFifoOverflowEnable(bool value){
p3p 0:74f0ae286b03 502 writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_FIFO_OFLOW_BIT, value);
p3p 0:74f0ae286b03 503 }
p3p 0:74f0ae286b03 504 void MPU9150::setInterruptMasterEnable(bool value){
p3p 0:74f0ae286b03 505 writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_I2C_MST_INT_BIT, value);
p3p 0:74f0ae286b03 506 }
p3p 0:74f0ae286b03 507 void MPU9150::setInterruptDataReadyEnable(bool value){
p3p 0:74f0ae286b03 508 writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_DATA_RDY_BIT, value);
p3p 0:74f0ae286b03 509 }
p3p 0:74f0ae286b03 510
p3p 0:74f0ae286b03 511 //INT_STATUS
p3p 0:74f0ae286b03 512 bool MPU9150::getInterruptFifoOverflow(){
p3p 0:74f0ae286b03 513 return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_FIFO_OFLOW_BIT);
p3p 0:74f0ae286b03 514 }
p3p 0:74f0ae286b03 515 bool MPU9150::getInterruptMaster(){
p3p 0:74f0ae286b03 516 return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_I2C_MST_INT_BIT);
p3p 0:74f0ae286b03 517 }
p3p 0:74f0ae286b03 518 bool MPU9150::getInterruptDataReady(){
p3p 0:74f0ae286b03 519 return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_DATA_RDY_BIT);
p3p 0:74f0ae286b03 520 }
p3p 0:74f0ae286b03 521
p3p 0:74f0ae286b03 522 uint8_t MPU9150::getInterruptStatus(){
p3p 0:74f0ae286b03 523 return get8(MPU6050_RA_INT_STATUS);
p3p 0:74f0ae286b03 524 }
p3p 0:74f0ae286b03 525
p3p 0:74f0ae286b03 526 //SIGNAL_PATH_RESET
p3p 0:74f0ae286b03 527 void MPU9150::resetGyroSignalPath(){
p3p 0:74f0ae286b03 528 writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_GYRO_RESET_BIT, true);
p3p 0:74f0ae286b03 529 }
p3p 0:74f0ae286b03 530 void MPU9150::resetAccelSignalPath(){
p3p 0:74f0ae286b03 531 writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_ACCEL_RESET_BIT, true);
p3p 0:74f0ae286b03 532 }
p3p 0:74f0ae286b03 533 void MPU9150::resetTempSignalPath(){
p3p 0:74f0ae286b03 534 writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_TEMP_RESET_BIT, true);
p3p 0:74f0ae286b03 535 }
p3p 0:74f0ae286b03 536
p3p 0:74f0ae286b03 537 //USER_CTRL
p3p 0:74f0ae286b03 538 void MPU9150::setEnableFifo(bool value){
p3p 0:74f0ae286b03 539 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_FIFO_EN_BIT, value);
p3p 0:74f0ae286b03 540 }
p3p 0:74f0ae286b03 541 void MPU9150::setI2cMasterEnable(bool value){
p3p 0:74f0ae286b03 542 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_EN_BIT, value);
p3p 0:74f0ae286b03 543 }
p3p 0:74f0ae286b03 544 void MPU9150::setFifoReset(bool value){
p3p 0:74f0ae286b03 545 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_FIFO_RESET_BIT, value);
p3p 0:74f0ae286b03 546 }
p3p 0:74f0ae286b03 547 void MPU9150::setI2cMasterReset(bool value){
p3p 0:74f0ae286b03 548 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_RESET_BIT, value);
p3p 0:74f0ae286b03 549 }
p3p 0:74f0ae286b03 550 void MPU9150::setFullSensorReset(bool value){
p3p 0:74f0ae286b03 551 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_SIG_COND_RESET_BIT, value);
p3p 0:74f0ae286b03 552 }
p3p 0:74f0ae286b03 553
p3p 0:74f0ae286b03 554 //FIFO_COUNT_H and FIFO_COUNT_L
p3p 0:74f0ae286b03 555 int16_t MPU9150::getFifoCount(){
p3p 0:74f0ae286b03 556 return get16(MPU6050_RA_FIFO_COUNTH);
p3p 0:74f0ae286b03 557 }
p3p 0:74f0ae286b03 558
p3p 0:74f0ae286b03 559 //FIFO_R_W
p3p 0:74f0ae286b03 560 bool MPU9150::getFifoBuffer(char* buffer, int16_t length){
p3p 0:74f0ae286b03 561 return read(MPU6050_RA_FIFO_R_W, buffer, length);
p3p 0:74f0ae286b03 562 }
p3p 0:74f0ae286b03 563
p3p 0:74f0ae286b03 564 //UNDOCUMENTED (again reimplemention from sparkfun github) can't find any origional documentation
p3p 0:74f0ae286b03 565 // XG_OFFS_TC
p3p 0:74f0ae286b03 566 uint8_t MPU9150::getOTPBankValid() {
p3p 0:74f0ae286b03 567 return getBit(MPU6050_RA_XG_OFFS_TC, MPU6050_TC_OTP_BNK_VLD_BIT);
p3p 0:74f0ae286b03 568 }
p3p 0:74f0ae286b03 569
p3p 0:74f0ae286b03 570 //INT_ENABLE
p3p 0:74f0ae286b03 571 void MPU9150::setIntPLLReadyEnabled(bool value) {
p3p 0:74f0ae286b03 572 writeBit( MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_PLL_RDY_INT_BIT, value);
p3p 0:74f0ae286b03 573 }
p3p 0:74f0ae286b03 574 void MPU9150::setIntDMPEnabled(bool value) {
p3p 0:74f0ae286b03 575 writeBit( MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_DMP_INT_BIT, value);
p3p 0:74f0ae286b03 576 }
p3p 0:74f0ae286b03 577
p3p 0:74f0ae286b03 578 // INT_STATUS
p3p 0:74f0ae286b03 579 bool MPU9150::getIntPLLReadyStatus() {
p3p 0:74f0ae286b03 580 return getBit( MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_PLL_RDY_INT_BIT);
p3p 0:74f0ae286b03 581 }
p3p 0:74f0ae286b03 582 bool MPU9150::getIntDMPStatus() {
p3p 0:74f0ae286b03 583 return getBit( MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_DMP_INT_BIT);
p3p 0:74f0ae286b03 584 }
p3p 0:74f0ae286b03 585
p3p 0:74f0ae286b03 586 // USER_CTRL
p3p 0:74f0ae286b03 587 bool MPU9150::getDMPEnabled() {
p3p 0:74f0ae286b03 588 return getBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_EN_BIT);
p3p 0:74f0ae286b03 589 }
p3p 0:74f0ae286b03 590 void MPU9150::setDMPEnabled(bool value) {
p3p 0:74f0ae286b03 591 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_EN_BIT, value);
p3p 0:74f0ae286b03 592 }
p3p 0:74f0ae286b03 593 void MPU9150::resetDMP() {
p3p 0:74f0ae286b03 594 writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_RESET_BIT, true);
p3p 0:74f0ae286b03 595 }
p3p 0:74f0ae286b03 596
p3p 0:74f0ae286b03 597 // BANK_SEL
p3p 0:74f0ae286b03 598 void MPU9150::setMemoryBank(uint8_t bank, bool prefetchEnabled, bool userBank) {
p3p 0:74f0ae286b03 599 bank &= 0x1F;
p3p 0:74f0ae286b03 600 if (userBank){
p3p 0:74f0ae286b03 601 bank |= 0x20;
p3p 0:74f0ae286b03 602 }
p3p 0:74f0ae286b03 603 if (prefetchEnabled){
p3p 0:74f0ae286b03 604 bank |= 0x40;
p3p 0:74f0ae286b03 605 }
p3p 0:74f0ae286b03 606 write( MPU6050_RA_BANK_SEL, bank);
p3p 0:74f0ae286b03 607 }
p3p 0:74f0ae286b03 608
p3p 0:74f0ae286b03 609 // MEM_START_ADDR
p3p 0:74f0ae286b03 610 void MPU9150::setMemoryStartAddress(uint8_t address) {
p3p 0:74f0ae286b03 611 write(MPU6050_RA_MEM_START_ADDR, address);
p3p 0:74f0ae286b03 612 }
p3p 0:74f0ae286b03 613
p3p 0:74f0ae286b03 614 // MEM_R_W
p3p 0:74f0ae286b03 615 uint8_t MPU9150::readMemoryByte() {
p3p 0:74f0ae286b03 616 return get8(MPU6050_RA_MEM_R_W);
p3p 0:74f0ae286b03 617 }
p3p 0:74f0ae286b03 618 void MPU9150::writeMemoryByte(uint8_t value) {
p3p 0:74f0ae286b03 619 write(MPU6050_RA_MEM_R_W, value);
p3p 0:74f0ae286b03 620 }
p3p 0:74f0ae286b03 621 void MPU9150::readMemoryBlock(uint8_t *data, uint16_t dataSize, uint8_t bank, uint8_t address) {
p3p 0:74f0ae286b03 622 setMemoryBank(bank);
p3p 0:74f0ae286b03 623 setMemoryStartAddress(address);
p3p 0:74f0ae286b03 624
p3p 0:74f0ae286b03 625 uint8_t chunkSize;
p3p 0:74f0ae286b03 626 for (uint16_t i = 0; i < dataSize;) {
p3p 0:74f0ae286b03 627 // determine correct chunk size according to bank position and data size
p3p 0:74f0ae286b03 628 chunkSize = MPU6050_DMP_MEMORY_CHUNK_SIZE;
p3p 0:74f0ae286b03 629
p3p 0:74f0ae286b03 630 // make sure we don't go past the data size
p3p 0:74f0ae286b03 631 if (i + chunkSize > dataSize) chunkSize = dataSize - i;
p3p 0:74f0ae286b03 632
p3p 0:74f0ae286b03 633 // make sure this chunk doesn't go past the bank boundary (256 bytes)
p3p 0:74f0ae286b03 634 if (chunkSize > 256 - address) chunkSize = 256 - address;
p3p 1:8ff0beb54dd4 635 //debug.printf("reading %d", chunkSize);
p3p 0:74f0ae286b03 636 // read the chunk of data as specified
p3p 0:74f0ae286b03 637 read(MPU6050_RA_MEM_R_W, (char*)(data+i), chunkSize);
p3p 1:8ff0beb54dd4 638 //debug.printf("read");
p3p 0:74f0ae286b03 639 // increase byte index by [chunkSize]
p3p 0:74f0ae286b03 640 i += chunkSize;
p3p 0:74f0ae286b03 641
p3p 0:74f0ae286b03 642 // uint8_t automatically wraps to 0 at 256
p3p 0:74f0ae286b03 643 address += chunkSize;
p3p 0:74f0ae286b03 644
p3p 0:74f0ae286b03 645 // if we aren't done, update bank (if necessary) and address
p3p 0:74f0ae286b03 646 if (i < dataSize) {
p3p 0:74f0ae286b03 647 if (address == 0) bank++;
p3p 0:74f0ae286b03 648 setMemoryBank(bank);
p3p 0:74f0ae286b03 649 setMemoryStartAddress(address);
p3p 0:74f0ae286b03 650 }
p3p 0:74f0ae286b03 651 }
p3p 0:74f0ae286b03 652 }
p3p 0:74f0ae286b03 653 bool MPU9150::writeMemoryBlock(const uint8_t *data, uint16_t dataSize, uint8_t bank, uint8_t address, bool verify) {
p3p 0:74f0ae286b03 654 setMemoryBank(bank);
p3p 0:74f0ae286b03 655 setMemoryStartAddress(address);
p3p 0:74f0ae286b03 656 uint8_t chunkSize;
p3p 0:74f0ae286b03 657 uint8_t *verifyBuffer = 0;
p3p 0:74f0ae286b03 658 uint8_t *progBuffer = 0;
p3p 0:74f0ae286b03 659 uint16_t i;
p3p 0:74f0ae286b03 660
p3p 0:74f0ae286b03 661 if (verify) verifyBuffer = (uint8_t *)malloc(MPU6050_DMP_MEMORY_CHUNK_SIZE);
p3p 0:74f0ae286b03 662 for (i = 0; i < dataSize;) {
p3p 0:74f0ae286b03 663 // determine correct chunk size according to bank position and data size
p3p 0:74f0ae286b03 664 chunkSize = MPU6050_DMP_MEMORY_CHUNK_SIZE;
p3p 0:74f0ae286b03 665
p3p 0:74f0ae286b03 666 // make sure we don't go past the data size
p3p 0:74f0ae286b03 667 if (i + chunkSize > dataSize) chunkSize = dataSize - i;
p3p 0:74f0ae286b03 668
p3p 0:74f0ae286b03 669 // make sure this chunk doesn't go past the bank boundary (256 bytes)
p3p 0:74f0ae286b03 670 if (chunkSize > 256 - address) chunkSize = 256 - address;
p3p 0:74f0ae286b03 671
p3p 0:74f0ae286b03 672 progBuffer = (uint8_t *)data + i;
p3p 0:74f0ae286b03 673
p3p 0:74f0ae286b03 674 write(MPU6050_RA_MEM_R_W, (char*)progBuffer, chunkSize);
p3p 0:74f0ae286b03 675
p3p 0:74f0ae286b03 676
p3p 0:74f0ae286b03 677 // verify data if needed
p3p 0:74f0ae286b03 678 if (verify && verifyBuffer) {
p3p 0:74f0ae286b03 679 setMemoryBank(bank);
p3p 0:74f0ae286b03 680 setMemoryStartAddress(address);
p3p 0:74f0ae286b03 681 read(MPU6050_RA_MEM_R_W, (char*)verifyBuffer, chunkSize);
p3p 0:74f0ae286b03 682 if (memcmp(progBuffer, verifyBuffer, chunkSize) != 0) {
p3p 0:74f0ae286b03 683 free(verifyBuffer);
p3p 1:8ff0beb54dd4 684 //debug.printf("invalid(%d, %d)\r\n", bank, read_errors, write_errors);
p3p 0:74f0ae286b03 685 return false; // uh oh.
p3p 0:74f0ae286b03 686 }
p3p 0:74f0ae286b03 687 }
p3p 0:74f0ae286b03 688
p3p 0:74f0ae286b03 689 // increase byte index by [chunkSize]
p3p 0:74f0ae286b03 690 i += chunkSize;
p3p 0:74f0ae286b03 691
p3p 0:74f0ae286b03 692 // uint8_t automatically wraps to 0 at 256
p3p 0:74f0ae286b03 693 address += chunkSize;
p3p 0:74f0ae286b03 694
p3p 0:74f0ae286b03 695 // if we aren't done, update bank (if necessary) and address
p3p 0:74f0ae286b03 696 if (i < dataSize) {
p3p 0:74f0ae286b03 697 if (address == 0) bank++;
p3p 0:74f0ae286b03 698 setMemoryBank(bank);
p3p 0:74f0ae286b03 699 setMemoryStartAddress(address);
p3p 0:74f0ae286b03 700 }
p3p 0:74f0ae286b03 701 }
p3p 0:74f0ae286b03 702 if (verify) free(verifyBuffer);
p3p 0:74f0ae286b03 703 return true;
p3p 0:74f0ae286b03 704 }
p3p 0:74f0ae286b03 705 bool MPU9150::writeDMPConfigurationSet(const uint8_t *data, uint16_t dataSize) {
p3p 0:74f0ae286b03 706 uint8_t *progBuffer;
p3p 0:74f0ae286b03 707 uint8_t success, special;
p3p 0:74f0ae286b03 708 uint16_t i;
p3p 0:74f0ae286b03 709
p3p 0:74f0ae286b03 710 // config set data is a long string of blocks with the following structure:
p3p 0:74f0ae286b03 711 // [bank] [offset] [length] [byte[0], byte[1], ..., byte[length]]
p3p 0:74f0ae286b03 712 uint8_t bank, offset, length;
p3p 0:74f0ae286b03 713 for (i = 0; i < dataSize;) {
p3p 0:74f0ae286b03 714 bank = data[i++];
p3p 0:74f0ae286b03 715 offset = data[i++];
p3p 0:74f0ae286b03 716 length = data[i++];
p3p 0:74f0ae286b03 717
p3p 0:74f0ae286b03 718 // write data or perform special action
p3p 0:74f0ae286b03 719 if (length > 0) {
p3p 0:74f0ae286b03 720 progBuffer = (uint8_t *)data + i;
p3p 0:74f0ae286b03 721 success = writeMemoryBlock(progBuffer, length, bank, offset, true);
p3p 0:74f0ae286b03 722 i += length;
p3p 0:74f0ae286b03 723 } else {
p3p 0:74f0ae286b03 724 // special instruction
p3p 0:74f0ae286b03 725 // NOTE: this kind of behavior (what and when to do certain things)
p3p 0:74f0ae286b03 726 // is totally undocumented. This code is in here based on observed
p3p 0:74f0ae286b03 727 // behavior only, and exactly why (or even whether) it has to be here
p3p 0:74f0ae286b03 728 // is anybody's guess for now.
p3p 0:74f0ae286b03 729 special = data[i++];
p3p 0:74f0ae286b03 730
p3p 0:74f0ae286b03 731 if (special == 0x01) {
p3p 0:74f0ae286b03 732 // enable DMP-related interrupts
p3p 0:74f0ae286b03 733 //setIntZeroMotionEnabled(true);
p3p 0:74f0ae286b03 734 //setIntFIFOBufferOverflowEnabled(true);
p3p 0:74f0ae286b03 735 //setIntDMPEnabled(true);
p3p 0:74f0ae286b03 736 write(MPU6050_RA_INT_ENABLE, 0x32); // single operation
p3p 0:74f0ae286b03 737 success = true;
p3p 0:74f0ae286b03 738 } else {
p3p 0:74f0ae286b03 739 // unknown special command
p3p 0:74f0ae286b03 740 success = false;
p3p 0:74f0ae286b03 741 }
p3p 0:74f0ae286b03 742 }
p3p 0:74f0ae286b03 743
p3p 0:74f0ae286b03 744 if (!success) {
p3p 0:74f0ae286b03 745 return false;
p3p 0:74f0ae286b03 746 }
p3p 0:74f0ae286b03 747 }
p3p 0:74f0ae286b03 748 return true;
p3p 0:74f0ae286b03 749 }
p3p 0:74f0ae286b03 750 // DMP_CFG_1
p3p 0:74f0ae286b03 751 uint8_t MPU9150::getDMPConfig1() {
p3p 0:74f0ae286b03 752 return get8(MPU6050_RA_DMP_CFG_1);
p3p 0:74f0ae286b03 753
p3p 0:74f0ae286b03 754 }
p3p 0:74f0ae286b03 755 void MPU9150::setDMPConfig1(uint8_t config) {
p3p 0:74f0ae286b03 756 write(MPU6050_RA_DMP_CFG_1, config);
p3p 0:74f0ae286b03 757 }
p3p 0:74f0ae286b03 758
p3p 0:74f0ae286b03 759 // DMP_CFG_2
p3p 0:74f0ae286b03 760 uint8_t MPU9150::getDMPConfig2() {
p3p 0:74f0ae286b03 761 return get8(MPU6050_RA_DMP_CFG_2);
p3p 0:74f0ae286b03 762
p3p 0:74f0ae286b03 763 }
p3p 0:74f0ae286b03 764 void MPU9150::setDMPConfig2(uint8_t config) {
p3p 0:74f0ae286b03 765 write(MPU6050_RA_DMP_CFG_2, config);
p3p 0:74f0ae286b03 766 }
p3p 0:74f0ae286b03 767
p3p 0:74f0ae286b03 768 //Utility Functions
p3p 0:74f0ae286b03 769 bool MPU9150::getBit(char reg_addr, uint8_t bit){
p3p 0:74f0ae286b03 770 uint8_t data = 0;
p3p 0:74f0ae286b03 771 readBit(reg_addr, bit, &data);
p3p 0:74f0ae286b03 772 return (bool)data;
p3p 0:74f0ae286b03 773 }
p3p 0:74f0ae286b03 774
p3p 0:74f0ae286b03 775 int8_t MPU9150::get8(char reg_addr){
p3p 0:74f0ae286b03 776 char data;
p3p 0:74f0ae286b03 777 read(reg_addr, &data);
p3p 0:74f0ae286b03 778 return data;
p3p 0:74f0ae286b03 779 }
p3p 0:74f0ae286b03 780
p3p 0:74f0ae286b03 781 int16_t MPU9150::get16(char reg_addr){
p3p 0:74f0ae286b03 782 char data[2];
p3p 1:8ff0beb54dd4 783 read(reg_addr, data, 2);
p3p 0:74f0ae286b03 784 return (data[0]<<8) + data[1];
p3p 0:74f0ae286b03 785 }
p3p 0:74f0ae286b03 786
p3p 0:74f0ae286b03 787 int16_t MPU9150::get16L(char reg_addr){
p3p 0:74f0ae286b03 788 char data[2];
p3p 0:74f0ae286b03 789 read(reg_addr, data, 2);
p3p 0:74f0ae286b03 790 return (data[1]<<8) + data[0];
p3p 0:74f0ae286b03 791 }
p3p 0:74f0ae286b03 792
p3p 0:74f0ae286b03 793 bool MPU9150::write(char reg_addr, char data){
p3p 0:74f0ae286b03 794 return write(reg_addr, &data, 1);
p3p 0:74f0ae286b03 795 }
p3p 0:74f0ae286b03 796
yishii 3:ed487dfe5570 797 uint8_t write_buff[32];
yishii 3:ed487dfe5570 798
p3p 0:74f0ae286b03 799 bool MPU9150::write(char reg_addr, char* data, int length){
yishii 3:ed487dfe5570 800 #if 0
p3p 0:74f0ae286b03 801 i2c.start();
p3p 0:74f0ae286b03 802 i2c.write(device_address << 1);
p3p 0:74f0ae286b03 803 i2c.write(reg_addr);
p3p 0:74f0ae286b03 804 for(int i = 0; i < length; i++) {
p3p 0:74f0ae286b03 805 if(!i2c.write(data[i])){
p3p 0:74f0ae286b03 806 write_errors++;
yishii 3:ed487dfe5570 807 pc.printf("Write Error %02X\r\n", reg_addr);
p3p 0:74f0ae286b03 808 return false;
p3p 0:74f0ae286b03 809 }
p3p 0:74f0ae286b03 810 }
p3p 0:74f0ae286b03 811 i2c.stop();
p3p 0:74f0ae286b03 812 return true;
yishii 3:ed487dfe5570 813 #else
yishii 3:ed487dfe5570 814 if(length > 31){
yishii 3:ed487dfe5570 815 printf("err! in MPU9150::write\r\n");
yishii 3:ed487dfe5570 816 }
yishii 3:ed487dfe5570 817 write_buff[0] = reg_addr;
yishii 3:ed487dfe5570 818 memcpy(&(write_buff[1]),data,length);
yishii 3:ed487dfe5570 819 i2c.write(char(device_address << 1), (char*) write_buff, length + 1);
yishii 3:ed487dfe5570 820
yishii 3:ed487dfe5570 821 return true;
yishii 3:ed487dfe5570 822 #endif
p3p 0:74f0ae286b03 823 }
p3p 0:74f0ae286b03 824
p3p 0:74f0ae286b03 825 bool MPU9150::writeBit(char reg_addr, uint8_t bit, bool value){
p3p 0:74f0ae286b03 826 return writeBits(reg_addr, bit, 1, (uint8_t)value);
p3p 0:74f0ae286b03 827 }
p3p 0:74f0ae286b03 828
p3p 0:74f0ae286b03 829 bool MPU9150::writeBits(char reg_addr, uint8_t bit_start, uint8_t length, uint8_t data){
p3p 0:74f0ae286b03 830 char ret;
p3p 0:74f0ae286b03 831
p3p 0:74f0ae286b03 832 if(!read(reg_addr, &ret)){
p3p 0:74f0ae286b03 833 return false;
p3p 0:74f0ae286b03 834 }
p3p 0:74f0ae286b03 835
p3p 0:74f0ae286b03 836 uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1);
p3p 0:74f0ae286b03 837 data <<= (bit_start - length + 1);
p3p 0:74f0ae286b03 838
p3p 0:74f0ae286b03 839 data &= mask;
p3p 0:74f0ae286b03 840 ret &= ~(mask);
p3p 0:74f0ae286b03 841 ret |= data;
p3p 0:74f0ae286b03 842
p3p 0:74f0ae286b03 843 return write(reg_addr, ret);
p3p 0:74f0ae286b03 844 }
p3p 0:74f0ae286b03 845
p3p 0:74f0ae286b03 846 bool MPU9150::read(char reg_addr, char* data){
yishii 3:ed487dfe5570 847 bool result = read(reg_addr, data, 1);
yishii 3:ed487dfe5570 848 return result;
p3p 0:74f0ae286b03 849 }
p3p 0:74f0ae286b03 850
p3p 0:74f0ae286b03 851 bool MPU9150::read(char reg_addr, char* data, int length){
yishii 3:ed487dfe5570 852 //pc.printf("device address = %02Xh\r\n", device_address << 1 );
p3p 0:74f0ae286b03 853 if(i2c.write(device_address << 1, &reg_addr, 1, true)){
p3p 0:74f0ae286b03 854 read_errors ++;
yishii 3:ed487dfe5570 855 //pc.printf("Read: Address Write Error %d\r\n", reg_addr);
p3p 0:74f0ae286b03 856 return false;
p3p 0:74f0ae286b03 857 }
p3p 0:74f0ae286b03 858 if(i2c.read(device_address << 1, data, length)){
p3p 0:74f0ae286b03 859 read_errors ++;
yishii 3:ed487dfe5570 860 //pc.printf("Read: Error %d\r\n", reg_addr);
p3p 0:74f0ae286b03 861 return false;
p3p 0:74f0ae286b03 862 }
p3p 0:74f0ae286b03 863 return true;
p3p 0:74f0ae286b03 864 }
p3p 0:74f0ae286b03 865
p3p 0:74f0ae286b03 866
p3p 0:74f0ae286b03 867 bool MPU9150::readBit(char reg_addr, uint8_t bit_start, uint8_t *data){
p3p 0:74f0ae286b03 868 return readBits(reg_addr, bit_start, 1, data);
p3p 0:74f0ae286b03 869 }
p3p 0:74f0ae286b03 870
p3p 0:74f0ae286b03 871 bool MPU9150::readBits(char reg_addr, uint8_t bit_start, uint8_t length, uint8_t *data){
p3p 0:74f0ae286b03 872 char ret;
p3p 0:74f0ae286b03 873
p3p 0:74f0ae286b03 874 if(!read(reg_addr, &ret)){
p3p 0:74f0ae286b03 875 return false;
p3p 0:74f0ae286b03 876 }
p3p 0:74f0ae286b03 877
p3p 0:74f0ae286b03 878 uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1);
p3p 0:74f0ae286b03 879 ret &= mask;
p3p 0:74f0ae286b03 880 ret >>= (bit_start - length + 1);
p3p 0:74f0ae286b03 881 *data = ret;
p3p 0:74f0ae286b03 882
p3p 0:74f0ae286b03 883 return true;
p3p 0:74f0ae286b03 884 }