Modified MPU9150 Library for Nucleo F303K8
Fork of MPU9150_DMP by
MPU9150.cpp
- Committer:
- p3p
- Date:
- 2014-08-31
- Revision:
- 0:74f0ae286b03
- Child:
- 1:8ff0beb54dd4
File content as of revision 0:74f0ae286b03:
#include "MPU9150.h" uint8_t MPU9150::getDeviceID(){ uint8_t ret = 0; readBits(MPU6050_RA_WHO_AM_I, MPU6050_WHO_AM_I_BIT, MPU6050_WHO_AM_I_LENGTH, &ret); return ret; } bool MPU9150::isReady(){ return (getDeviceID() == (device_address >> 1)); } void MPU9150::initialise(){ reset(); wait_ms(20);//wait for reset sleep(false); clockSelect(MPU6050_CLOCK_PLL_XGYRO); //use the gyro clock as its more reliable setGyroFullScaleRange(MPU6050_GYRO_FS_250); setAccelFullScaleRange(MPU6050_ACCEL_FS_2); setStandbyAccX(true); setI2CMasterClock(MPU6050_CLOCK_DIV_400); setDigitalLowPassFilter(MPU6050_DLPF_BW_42); setSampleRateDivider(4); initialiseMagnetometer(); setFifoReset(true); setTemperatureFifo(true); setAccelFifo(true); setGyroFifo(true); setSlave0Fifo(true); setInterruptDataReadyEnable(true); setEnableFifo(true); } void MPU9150::initialiseMagnetometer(){ //set up slave 0 to read the magnetometor data setWaitForExternalSensor(true); //read data setI2cSlaveRW(0, true); setI2cSlaveAddress(0, 0x0C); setI2cSlaveRegister(0, 3); setI2cSlaveEnable(0, true); setI2cSlaveTransactionLength(0, 6); //set up slave 1 to request a new magnetometor reading by writing 0x01 to 0xA setI2cSlaveAddress(1, 0x0C); setI2cSlaveRegister(1, 0x0A); setI2cSlaveTransactionLength(1, 1); setI2cSlaveEnable(1, true); setI2cSlaveDataOut(1, 1); //configure update rates setI2cMasterDelay(4); setI2cSlaveDelay(0, true); setI2cSlaveDelay(1, true); //Enable the aux i2c bus with MPU9150 as master setI2cMasterEnable(true); } void MPU9150::initialiseDMP(){ reset(); wait_ms(20); sleep(false); //does this exist in the 9150? char product[6] = {0,0,0,0,0,0}; read(0x77, product, 6 ); int rev = ((product[5] & 0x01) << 2) | ((product[3] & 0x01) << 1) | (product[1] & 0x01); debug.printf("%02X, %02X, %02X, %02X, %02X, %02X\r\n", product[0], product[1], product[2], product[3], product[4], product[5]); debug.printf("Product Revision: %d\r\n", rev); setMemoryBank(0x10, true, true); setMemoryStartAddress(0x06); debug.printf("Hardware Version: %d\r\n", readMemoryByte()); setMemoryBank(0); // check OTP bank valid uint8_t otpValid = getOTPBankValid(); debug.printf("optValid: %d\r\n", otpValid); //Enabling interrupt latch, clear on any read, AUX bypass enabled write(MPU6050_RA_INT_PIN_CFG, 0x32); if (writeMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE, 0 ,0, true)) { debug.printf("Success! DMP code written and verified.\r\n"); if (writeDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE)) { debug.printf("Success! DMP configuration written and verified.\r\n"); setIntDMPEnabled(true); setInterruptFifoOverflowEnable(true); setSampleRateDivider(4); clockSelect(MPU6050_CLOCK_PLL_XGYRO); setDigitalLowPassFilter(MPU6050_DLPF_BW_42); setGyroFullScaleRange(MPU6050_GYRO_FS_2000); setExternalFrameSync(MPU6050_EXT_SYNC_TEMP_OUT_L); setDMPConfig1(0x03); setDMPConfig2(0x00); unsigned char *update_ptr = (unsigned char*)dmpUpdates; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); setFifoReset(true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); write(MPU6050_RA_PWR_MGMT_2, 0x00); setInterruptAnyReadClear(true); setInterruptLatch(true); setI2cSlaveRW(0, true); setI2cSlaveAddress(0, 0x0C); setI2cSlaveRegister(0, 1); setI2cSlaveEnable(0, true); setI2cSlaveTransactionLength(0, 10); //set up slave 1 to request a new magnetometor reading by writing 0x01 to 0xA setI2cSlaveAddress(2, 0x0C); setI2cSlaveRegister(2, 0x0A); setI2cSlaveTransactionLength(2, 1); setI2cSlaveEnable(2, true); setI2cSlaveDataOut(2, 1); //configure update rates setI2cMasterDelay(4); setI2cSlaveDelay(0, true); setI2cSlaveDelay(2, true); //Enable the aux i2c bus with MPU9150 as master setI2cMasterEnable(true); write(MPU6050_RA_INT_PIN_CFG, 0x00); // enable I2C master mode and reset DMP/FIFO //DEBUG_PRINTLN(F("Enabling I2C master mode...")); write( MPU6050_RA_USER_CTRL, 0x20); //DEBUG_PRINTLN(F("Resetting FIFO...")); write(MPU6050_RA_USER_CTRL, 0x24); //DEBUG_PRINTLN(F("Rewriting I2C master mode enabled because...I don't know")); write(MPU6050_RA_USER_CTRL, 0x20); //DEBUG_PRINTLN(F("Enabling and resetting DMP/FIFO...")); write(MPU6050_RA_USER_CTRL, 0xE8); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); //read? update_ptr += update_ptr[2] + 3; //stalls? //readMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1]); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); int fifoCount = 0; while ((fifoCount = getFifoCount()) < 46); uint8_t buffer[128]; getFifoBuffer((char *)buffer, fifoCount); getInterruptStatus(); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); fifoCount = 0; while ((fifoCount = getFifoCount()) < 48); getFifoBuffer((char *)buffer, fifoCount); getInterruptStatus(); fifoCount = 0; while ((fifoCount = getFifoCount()) < 48); getFifoBuffer((char *)buffer, fifoCount); getInterruptStatus(); update_ptr += update_ptr[2] + 3; writeMemoryBlock(update_ptr + 3, update_ptr[2], update_ptr[0], update_ptr[1], true); setDMPEnabled(false); debug.printf("finished\r\n"); } } } //PWR_MGMT_1 Control Register //*****************************/ void MPU9150::reset(){ writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_DEVICE_RESET_BIT, true); } void MPU9150::sleep(bool state){ writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_SLEEP_BIT, state); } /* cycle between sleep mode and waking up to take a single sample of data from active sensors at a rate determined by LP_WAKE_CTRL (register 108). */ void MPU9150::cycleMode(bool state){ writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CYCLE_BIT, state); } void MPU9150::disableTemperatureSensor(bool state){ writeBit(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_TEMP_DIS_BIT, state); } void MPU9150::clockSelect(uint8_t clk){ writeBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CLKSEL_BIT, MPU6050_PWR1_CLKSEL_LENGTH, clk); } //PWR_MGMT_2 Control Register //*****************************/ void MPU9150::setCycleWakeFrequency(uint8_t freq){ writeBits(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_LP_WAKE_CTRL_BIT, MPU6050_PWR2_LP_WAKE_CTRL_LENGTH, freq); } void MPU9150::setStandbyAccX(bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_XA_BIT, value); } void MPU9150::setStandbyAccY(bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_YA_BIT, value); } void MPU9150::setStandbyAccZ(bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_ZA_BIT, value); } void MPU9150::setStandbyGyroX( bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_XG_BIT, value); } void MPU9150::setStandbyGyroY( bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_YG_BIT, value); } void MPU9150::setStandbyGyroZ( bool value){ writeBit(MPU6050_RA_PWR_MGMT_2, MPU6050_PWR2_STBY_ZG_BIT, value); } //SMPRT_DIV Sample Rate Divider //*****************************/ void MPU9150::setSampleRateDivider(uint8_t value){ write(MPU6050_RA_SMPLRT_DIV, value); } //CONFIG void MPU9150::setExternalFrameSync(uint8_t value){ writeBits(MPU6050_RA_CONFIG, MPU6050_CFG_EXT_SYNC_SET_BIT, MPU6050_CFG_EXT_SYNC_SET_LENGTH, value); } void MPU9150::setDigitalLowPassFilter(uint8_t value){ writeBits(MPU6050_RA_CONFIG, MPU6050_CFG_DLPF_CFG_BIT, MPU6050_CFG_DLPF_CFG_LENGTH, value); } //GYRO_CONFIG void MPU9150::setGyroSelfTest(bool value){ writeBit(MPU6050_RA_GYRO_CONFIG, 7, value); //X writeBit(MPU6050_RA_GYRO_CONFIG, 6, value); //Y writeBit(MPU6050_RA_GYRO_CONFIG, 5, value); //Z } void MPU9150::setGyroFullScaleRange(uint8_t value){ writeBits(MPU6050_RA_GYRO_CONFIG, MPU6050_GCONFIG_FS_SEL_BIT, MPU6050_GCONFIG_FS_SEL_LENGTH, value); } //ACCEL_CONFIG void MPU9150::setAccelSelfTest(bool value){ writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_XA_ST_BIT, value); writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_YA_ST_BIT, value); writeBit(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_ZA_ST_BIT, value); } void MPU9150::setAccelFullScaleRange(uint8_t value){ writeBits(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_AFS_SEL_BIT , MPU6050_ACONFIG_AFS_SEL_LENGTH, value); } //FIFO_EN void MPU9150::setTemperatureFifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_TEMP_FIFO_EN_BIT, value); } void MPU9150::setGyroFifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_XG_FIFO_EN_BIT, value); writeBit(MPU6050_RA_FIFO_EN, MPU6050_YG_FIFO_EN_BIT, value); writeBit(MPU6050_RA_FIFO_EN, MPU6050_ZG_FIFO_EN_BIT, value); } void MPU9150::setAccelFifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_ACCEL_FIFO_EN_BIT, value); } void MPU9150::setSlave2Fifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV2_FIFO_EN_BIT, value); } void MPU9150::setSlave1Fifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV1_FIFO_EN_BIT, value); } void MPU9150::setSlave0Fifo(bool value){ writeBit(MPU6050_RA_FIFO_EN, MPU6050_SLV0_FIFO_EN_BIT, value); } //I2C_MST_CTRL void MPU9150::setMultiMaster(bool value){ writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_MULT_MST_EN_BIT, value); } void MPU9150::setWaitForExternalSensor(bool value){ writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_WAIT_FOR_ES_BIT, value); } void MPU9150::setSlave3Fifo(bool value){ writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_SLV_3_FIFO_EN_BIT, value); } void MPU9150::setMasterStartStop(bool value){ writeBit(MPU6050_RA_I2C_MST_CTRL, MPU6050_I2C_MST_P_NSR_BIT, value); } void MPU9150::setI2CMasterClock(uint8_t value){ writeBits(MPU6050_RA_I2C_MST_CTRL, MPU6050_I2C_MST_CLK_BIT, MPU6050_I2C_MST_CLK_LENGTH, value); } //I2C slaves 0 to 3 //I2C_SLV0_ADDR void MPU9150::setI2cSlaveRW(uint8_t slave_id, bool value){ if(slave_id > 3)return; writeBit(MPU6050_RA_I2C_SLV0_ADDR + (slave_id * 3), MPU6050_I2C_SLV_RW_BIT, value); } void MPU9150::setI2cSlaveAddress(uint8_t slave_id, uint8_t value){ if(slave_id > 3)return; writeBits(MPU6050_RA_I2C_SLV0_ADDR + (slave_id * 3), MPU6050_I2C_SLV_ADDR_BIT, MPU6050_I2C_SLV_ADDR_LENGTH, value); } //I2C_SLV0_REG, void MPU9150::setI2cSlaveRegister(uint8_t slave_id, uint8_t value){ if(slave_id > 3)return; write(MPU6050_RA_I2C_SLV0_REG + (slave_id * 3), value); } //I2C_SLV0_CTRL void MPU9150::setI2cSlaveEnable(uint8_t slave_id, bool value){ if(slave_id > 3)return; writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_EN_BIT, value); } void MPU9150::setI2cSlaveByteSwap(uint8_t slave_id, bool value){ if(slave_id > 3)return; writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_BYTE_SW_BIT, value); } void MPU9150::setI2cSlaveRegDisable(uint8_t slave_id, bool value){ if(slave_id > 3)return; writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_REG_DIS_BIT, value); } void MPU9150::setI2cSlaveByteGrouping(uint8_t slave_id, bool value){ if(slave_id > 3)return; writeBit(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_GRP_BIT, value); } void MPU9150::setI2cSlaveTransactionLength(uint8_t slave_id, uint8_t value){ if(slave_id > 3)return; writeBits(MPU6050_RA_I2C_SLV0_CTRL + (slave_id * 3), MPU6050_I2C_SLV_LEN_BIT, MPU6050_I2C_SLV_LEN_LENGTH, value); } //I2C_SLV0_DO void MPU9150::setI2cSlaveDataOut(uint8_t slave_id, uint8_t value){ if(slave_id > 3)return; write(MPU6050_RA_I2C_SLV0_DO + slave_id, value); } //I2C_MST_DELAY_CTRL void MPU9150::setI2cSlaveDelay(uint8_t slave_id, uint8_t value){ writeBit(MPU6050_RA_I2C_MST_DELAY_CTRL, slave_id, value); } void MPU9150::setI2cSlaveShadowDelay(uint8_t value){ writeBit(MPU6050_RA_I2C_MST_DELAY_CTRL, 7, value); } //I2C slave4 //I2C_SLV4_ADDR void MPU9150::setI2cSlave4RW( bool value){ writeBit(MPU6050_RA_I2C_SLV4_ADDR, MPU6050_I2C_SLV4_RW_BIT, value); } void MPU9150::setI2cSlave4Address( uint8_t value){ writeBits(MPU6050_RA_I2C_SLV4_ADDR, MPU6050_I2C_SLV4_ADDR_BIT, MPU6050_I2C_SLV4_ADDR_LENGTH, value); } //I2C_SLV4_REG, void MPU9150::setI2cSlave4Register(uint8_t value){ write(MPU6050_RA_I2C_SLV4_REG, value); } //I2C_SLV4_DO void MPU9150::setI2cSlave4DataOut(uint8_t value){ write(MPU6050_RA_I2C_SLV4_DO, value); } //I2C_SLV4_CTRL void MPU9150::setI2cSlave4Enable(bool value){ writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_EN_BIT, value); } void MPU9150::setI2cSlave4IntEnable(bool value){ writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_INT_EN_BIT, value); } void MPU9150::setI2cSlave4RegDisable(bool value){ writeBit(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_REG_DIS_BIT, value); } void MPU9150::setI2cMasterDelay(uint8_t value){ writeBits(MPU6050_RA_I2C_SLV4_CTRL, MPU6050_I2C_SLV4_MST_DLY_BIT, MPU6050_I2C_SLV4_MST_DLY_LENGTH, value); } uint8_t MPU9150::getI2cSlave4Di(){ return get8(MPU6050_RA_I2C_SLV4_DI); } //I2C_MST_STATUS bool MPU9150::setI2cPassthrough(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_PASS_THROUGH_BIT); } bool MPU9150::setI2cSlave4Done(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV4_DONE_BIT); } bool MPU9150::setI2cLostArbitration(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_LOST_ARB_BIT); } bool MPU9150::setI2cSlave0Nack(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV0_NACK_BIT); } bool MPU9150::setI2cSlave1Nack(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV1_NACK_BIT); } bool MPU9150::setI2cSlave2Nack(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV2_NACK_BIT); } bool MPU9150::setI2cSlave3Nack(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV3_NACK_BIT); } bool MPU9150::setI2cSlave4Nack(){ return getBit(MPU6050_RA_I2C_MST_STATUS, MPU6050_MST_I2C_SLV4_NACK_BIT); } //INT_PIN_CFG void MPU9150::setInterruptActiveLow(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_LEVEL_BIT, value); } void MPU9150::setInterruptOpenDrain(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_OPEN_BIT, value); } void MPU9150::setInterruptLatch(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_LATCH_INT_EN_BIT, value); } void MPU9150::setInterruptAnyReadClear(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_INT_RD_CLEAR_BIT, value); } void MPU9150::setFsyncInterruptActiveLow(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_FSYNC_INT_LEVEL_BIT, value); } void MPU9150::setFsyncInterruptEnable(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_FSYNC_INT_EN_BIT, value); } void MPU9150::setI2cAuxBypassEnable(bool value){ writeBit(MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_I2C_BYPASS_EN_BIT, value); } //INT_ENABLE void MPU9150::setInterruptFifoOverflowEnable(bool value){ writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_FIFO_OFLOW_BIT, value); } void MPU9150::setInterruptMasterEnable(bool value){ writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_I2C_MST_INT_BIT, value); } void MPU9150::setInterruptDataReadyEnable(bool value){ writeBit(MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_DATA_RDY_BIT, value); } //INT_STATUS bool MPU9150::getInterruptFifoOverflow(){ return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_FIFO_OFLOW_BIT); } bool MPU9150::getInterruptMaster(){ return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_I2C_MST_INT_BIT); } bool MPU9150::getInterruptDataReady(){ return getBit(MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_DATA_RDY_BIT); } uint8_t MPU9150::getInterruptStatus(){ return get8(MPU6050_RA_INT_STATUS); } //SIGNAL_PATH_RESET void MPU9150::resetGyroSignalPath(){ writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_GYRO_RESET_BIT, true); } void MPU9150::resetAccelSignalPath(){ writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_ACCEL_RESET_BIT, true); } void MPU9150::resetTempSignalPath(){ writeBit(MPU6050_RA_SIGNAL_PATH_RESET, MPU6050_PATHRESET_TEMP_RESET_BIT, true); } //USER_CTRL void MPU9150::setEnableFifo(bool value){ writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_FIFO_EN_BIT, value); } void MPU9150::setI2cMasterEnable(bool value){ writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_EN_BIT, value); } void MPU9150::setFifoReset(bool value){ writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_FIFO_RESET_BIT, value); } void MPU9150::setI2cMasterReset(bool value){ writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_RESET_BIT, value); } void MPU9150::setFullSensorReset(bool value){ writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_SIG_COND_RESET_BIT, value); } //FIFO_COUNT_H and FIFO_COUNT_L int16_t MPU9150::getFifoCount(){ return get16(MPU6050_RA_FIFO_COUNTH); } //FIFO_R_W bool MPU9150::getFifoBuffer(char* buffer, int16_t length){ return read(MPU6050_RA_FIFO_R_W, buffer, length); } //UNDOCUMENTED (again reimplemention from sparkfun github) can't find any origional documentation // XG_OFFS_TC uint8_t MPU9150::getOTPBankValid() { return getBit(MPU6050_RA_XG_OFFS_TC, MPU6050_TC_OTP_BNK_VLD_BIT); } //INT_ENABLE void MPU9150::setIntPLLReadyEnabled(bool value) { writeBit( MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_PLL_RDY_INT_BIT, value); } void MPU9150::setIntDMPEnabled(bool value) { writeBit( MPU6050_RA_INT_ENABLE, MPU6050_INTERRUPT_DMP_INT_BIT, value); } // INT_STATUS bool MPU9150::getIntPLLReadyStatus() { return getBit( MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_PLL_RDY_INT_BIT); } bool MPU9150::getIntDMPStatus() { return getBit( MPU6050_RA_INT_STATUS, MPU6050_INTERRUPT_DMP_INT_BIT); } // USER_CTRL bool MPU9150::getDMPEnabled() { return getBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_EN_BIT); } void MPU9150::setDMPEnabled(bool value) { writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_EN_BIT, value); } void MPU9150::resetDMP() { writeBit(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_RESET_BIT, true); } // BANK_SEL void MPU9150::setMemoryBank(uint8_t bank, bool prefetchEnabled, bool userBank) { bank &= 0x1F; if (userBank){ bank |= 0x20; } if (prefetchEnabled){ bank |= 0x40; } write( MPU6050_RA_BANK_SEL, bank); } // MEM_START_ADDR void MPU9150::setMemoryStartAddress(uint8_t address) { write(MPU6050_RA_MEM_START_ADDR, address); } // MEM_R_W uint8_t MPU9150::readMemoryByte() { return get8(MPU6050_RA_MEM_R_W); } void MPU9150::writeMemoryByte(uint8_t value) { write(MPU6050_RA_MEM_R_W, value); } void MPU9150::readMemoryBlock(uint8_t *data, uint16_t dataSize, uint8_t bank, uint8_t address) { setMemoryBank(bank); setMemoryStartAddress(address); uint8_t chunkSize; for (uint16_t i = 0; i < dataSize;) { // determine correct chunk size according to bank position and data size chunkSize = MPU6050_DMP_MEMORY_CHUNK_SIZE; // make sure we don't go past the data size if (i + chunkSize > dataSize) chunkSize = dataSize - i; // make sure this chunk doesn't go past the bank boundary (256 bytes) if (chunkSize > 256 - address) chunkSize = 256 - address; debug.printf("reading %d", chunkSize); // read the chunk of data as specified read(MPU6050_RA_MEM_R_W, (char*)(data+i), chunkSize); debug.printf("read"); // increase byte index by [chunkSize] i += chunkSize; // uint8_t automatically wraps to 0 at 256 address += chunkSize; // if we aren't done, update bank (if necessary) and address if (i < dataSize) { if (address == 0) bank++; setMemoryBank(bank); setMemoryStartAddress(address); } } } bool MPU9150::writeMemoryBlock(const uint8_t *data, uint16_t dataSize, uint8_t bank, uint8_t address, bool verify) { setMemoryBank(bank); setMemoryStartAddress(address); uint8_t chunkSize; uint8_t *verifyBuffer = 0; uint8_t *progBuffer = 0; uint16_t i; if (verify) verifyBuffer = (uint8_t *)malloc(MPU6050_DMP_MEMORY_CHUNK_SIZE); for (i = 0; i < dataSize;) { // determine correct chunk size according to bank position and data size chunkSize = MPU6050_DMP_MEMORY_CHUNK_SIZE; // make sure we don't go past the data size if (i + chunkSize > dataSize) chunkSize = dataSize - i; // make sure this chunk doesn't go past the bank boundary (256 bytes) if (chunkSize > 256 - address) chunkSize = 256 - address; progBuffer = (uint8_t *)data + i; write(MPU6050_RA_MEM_R_W, (char*)progBuffer, chunkSize); // verify data if needed if (verify && verifyBuffer) { setMemoryBank(bank); setMemoryStartAddress(address); read(MPU6050_RA_MEM_R_W, (char*)verifyBuffer, chunkSize); if (memcmp(progBuffer, verifyBuffer, chunkSize) != 0) { free(verifyBuffer); debug.printf("invalid(%d, %d)\r\n", bank, read_errors, write_errors); return false; // uh oh. } } // increase byte index by [chunkSize] i += chunkSize; // uint8_t automatically wraps to 0 at 256 address += chunkSize; // if we aren't done, update bank (if necessary) and address if (i < dataSize) { if (address == 0) bank++; setMemoryBank(bank); setMemoryStartAddress(address); } } if (verify) free(verifyBuffer); return true; } bool MPU9150::writeDMPConfigurationSet(const uint8_t *data, uint16_t dataSize) { uint8_t *progBuffer; uint8_t success, special; uint16_t i; // config set data is a long string of blocks with the following structure: // [bank] [offset] [length] [byte[0], byte[1], ..., byte[length]] uint8_t bank, offset, length; for (i = 0; i < dataSize;) { bank = data[i++]; offset = data[i++]; length = data[i++]; // write data or perform special action if (length > 0) { progBuffer = (uint8_t *)data + i; success = writeMemoryBlock(progBuffer, length, bank, offset, true); i += length; } else { // special instruction // NOTE: this kind of behavior (what and when to do certain things) // is totally undocumented. This code is in here based on observed // behavior only, and exactly why (or even whether) it has to be here // is anybody's guess for now. special = data[i++]; if (special == 0x01) { // enable DMP-related interrupts //setIntZeroMotionEnabled(true); //setIntFIFOBufferOverflowEnabled(true); //setIntDMPEnabled(true); write(MPU6050_RA_INT_ENABLE, 0x32); // single operation success = true; } else { // unknown special command success = false; } } if (!success) { return false; } } return true; } // DMP_CFG_1 uint8_t MPU9150::getDMPConfig1() { return get8(MPU6050_RA_DMP_CFG_1); } void MPU9150::setDMPConfig1(uint8_t config) { write(MPU6050_RA_DMP_CFG_1, config); } // DMP_CFG_2 uint8_t MPU9150::getDMPConfig2() { return get8(MPU6050_RA_DMP_CFG_2); } void MPU9150::setDMPConfig2(uint8_t config) { write(MPU6050_RA_DMP_CFG_2, config); } //Utility Functions bool MPU9150::getBit(char reg_addr, uint8_t bit){ uint8_t data = 0; readBit(reg_addr, bit, &data); return (bool)data; } int8_t MPU9150::get8(char reg_addr){ char data; read(reg_addr, &data); return data; } int16_t MPU9150::get16(char reg_addr){ char data[2]; if(!read(reg_addr, data, 2))debug.printf("get16: read fail:%02X\r\n", reg_addr); return (data[0]<<8) + data[1]; } int16_t MPU9150::get16L(char reg_addr){ char data[2]; read(reg_addr, data, 2); return (data[1]<<8) + data[0]; } bool MPU9150::write(char reg_addr, char data){ return write(reg_addr, &data, 1); } bool MPU9150::write(char reg_addr, char* data, int length){ i2c.start(); i2c.write(device_address << 1); i2c.write(reg_addr); for(int i = 0; i < length; i++) { if(!i2c.write(data[i])){ write_errors++; debug.printf("Write Error %d\r\n", reg_addr); return false; } } i2c.stop(); return true; } bool MPU9150::writeBit(char reg_addr, uint8_t bit, bool value){ return writeBits(reg_addr, bit, 1, (uint8_t)value); } bool MPU9150::writeBits(char reg_addr, uint8_t bit_start, uint8_t length, uint8_t data){ char ret; if(!read(reg_addr, &ret)){ return false; } uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1); data <<= (bit_start - length + 1); data &= mask; ret &= ~(mask); ret |= data; return write(reg_addr, ret); } bool MPU9150::read(char reg_addr, char* data){ return read(reg_addr, data, 1); } bool MPU9150::read(char reg_addr, char* data, int length){ if(i2c.write(device_address << 1, ®_addr, 1, true)){ read_errors ++; debug.printf("Read: Address Write Error %d\r\n", reg_addr); return false; } if(i2c.read(device_address << 1, data, length)){ read_errors ++; debug.printf("Read: Error %d\r\n", reg_addr); return false; } return true; } bool MPU9150::readBit(char reg_addr, uint8_t bit_start, uint8_t *data){ return readBits(reg_addr, bit_start, 1, data); } bool MPU9150::readBits(char reg_addr, uint8_t bit_start, uint8_t length, uint8_t *data){ char ret; if(!read(reg_addr, &ret)){ return false; } uint8_t mask = ((1 << length) - 1) << (bit_start - length + 1); ret &= mask; ret >>= (bit_start - length + 1); *data = ret; return true; }