Accelerometer::Accelerometer()
{
m_i2cfd = open("/dev/i2c-1", O_RDWR);
if(!m_i2cfd < 0)
abort();
if(ioctl(m_i2cfd, I2C_SLAVE, 0x68) < 0)
abort();
i2cWriteBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CLKSEL_BIT, MPU6050_PWR1_CLKSEL_LENGTH, MPU6050_CLOCK_PLL_XGYRO); // Set Clock source
i2cWriteBits(MPU6050_RA_GYRO_CONFIG, MPU6050_GCONFIG_FS_SEL_BIT, MPU6050_GCONFIG_FS_SEL_LENGTH, MPU6050_GYRO_FS_250); // Full scale gyro range
i2cWriteBits(MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_AFS_SEL_BIT, MPU6050_ACONFIG_AFS_SEL_LENGTH, MPU6050_ACCEL_FS_2); // Full scale accel range
i2cWriteBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_SLEEP_BIT, 1, false); // Disable sleep mode
i2cWriteBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_DEVICE_RESET_BIT, 1, true); // Reset
usleep(30000);
i2cWriteBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_SLEEP_BIT, 1, false); // Disable sleep mode
setMemoryBank(0x10, true, true); // Get MPU hardware revision
uint8_t value = 0x06; // Alright, this is dirty but a pointer to this value will be sent to every i2cWriteBytes...
uint16_t value16; // Yeah... I know, I won't go to heaven but that's ok
i2cWriteBytes(MPU6050_RA_MEM_START_ADDR, 1, &value); // Set memory start address
i2cReadBytes(MPU6050_RA_MEM_R_W, 1, buffer); // Get hardware revision
uint8_t hwRevision __attribute__((__unused__)) = buffer[0];
setMemoryBank(0, false, false);
i2cReadBits(MPU6050_RA_XG_OFFS_TC, MPU6050_TC_OTP_BNK_VLD_BIT, 1, buffer);
uint8_t otpValid __attribute__((__unused__)) = buffer[0]; // Check OTP bank validity
i2cReadBits(MPU6050_RA_XG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, buffer);
int8_t xgOffset = buffer[0];
i2cReadBits(MPU6050_RA_YG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, buffer);
int8_t ygOffset = buffer[0];
i2cReadBits(MPU6050_RA_ZG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, buffer);
int8_t zgOffset = buffer[0];
value = 0x7F; // Setup weird slave stuff
i2cWriteBytes(MPU6050_RA_I2C_SLV0_ADDR, 1, &value);
i2cWriteBits(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_EN_BIT, 1, false); // Disable I2C Master Mode
value = 0x68;
i2cWriteBytes(MPU6050_RA_I2C_SLV0_ADDR, 1, &value);
i2cWriteBits(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_RESET_BIT, 1, true); // Reset I2C Master
usleep(20000);
if (writeMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE, 0, 0, true, true)) { // Load DMP code into memory banks
if (writeDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE, true)) { // Let's write the DMP configuration
i2cWriteBits(MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CLKSEL_BIT, MPU6050_PWR1_CLKSEL_LENGTH, MPU6050_CLOCK_PLL_ZGYRO); // Set clock source
value = 0x12;
i2cWriteBytes(MPU6050_RA_INT_ENABLE, 1, &value); // Enable 0x12 interuption
value = 4; // 1khz / (1 + 4) = 200 Hz
i2cWriteBytes(MPU6050_RA_SMPLRT_DIV, 1, &value);
i2cWriteBits(MPU6050_RA_CONFIG, MPU6050_CFG_EXT_SYNC_SET_BIT, MPU6050_CFG_EXT_SYNC_SET_LENGTH, MPU6050_EXT_SYNC_TEMP_OUT_L); // External Frame Sync
i2cWriteBits(MPU6050_RA_CONFIG, MPU6050_CFG_DLPF_CFG_BIT, MPU6050_CFG_DLPF_CFG_LENGTH, MPU6050_DLPF_BW_42); // DLPF Mode
i2cWriteBits(MPU6050_RA_GYRO_CONFIG, MPU6050_GCONFIG_FS_SEL_BIT, MPU6050_GCONFIG_FS_SEL_LENGTH, MPU6050_GYRO_FS_2000); // Full scale gyro range
value = 0x03;
i2cWriteBytes(MPU6050_RA_DMP_CFG_1, 1, &value);
value = 0x00;
i2cWriteBytes(MPU6050_RA_DMP_CFG_2, 1, &value);
// Setting X Y and Z gyro offsets to previous values
i2cWriteBits(MPU6050_RA_XG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, xgOffset);
i2cWriteBits(MPU6050_RA_YG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, ygOffset);
i2cWriteBits(MPU6050_RA_ZG_OFFS_TC, MPU6050_TC_OFFSET_BIT, MPU6050_TC_OFFSET_LENGTH, zgOffset);
value16 = 0; // And gyro offsets users to 0
i2cWriteWords(MPU6050_RA_XG_OFFS_USRH, 1, &value16);
i2cWriteWords(MPU6050_RA_YG_OFFS_USRH, 1, &value16);
i2cWriteWords(MPU6050_RA_ZG_OFFS_USRH, 1, &value16);
// Memory update 1/7
uint8_t dmpUpdate[16], j;
uint16_t pos = 0;
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Memory update 2/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
resetFIFO();
uint8_t fifoCount = getFIFOCount();
uint8_t fifoBuffer[128];
value = 2;
i2cWriteBytes(MPU6050_RA_MOT_THR, 1, &value); // Motion threshold
value = 156;
i2cWriteBytes(MPU6050_RA_ZRMOT_THR, 1, &value); // Zero Motion threshold
value = 80;
i2cWriteBytes(MPU6050_RA_MOT_DUR, 1, &value); // Motion duration
value = 0;
i2cWriteBytes(MPU6050_RA_ZRMOT_DUR, 1, &value); // Zero Motion duration
resetFIFO();
setFIFOEnabled(true);
setDMPEnabled(true);
i2cWriteBits(MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_DMP_RESET_BIT, 1, true); // Reset DMP
// Memory update 3/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
// Memory update 4/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
// Memory update 5/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
while ((fifoCount = getFIFOCount()) < 3);
getFIFOBytes(fifoBuffer, fifoCount);
uint8_t mpuIntStatus __attribute__((__unused__)) = getIntStatus();
// Memory update 6/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
readMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
while ((fifoCount = getFIFOCount()) < 3);
getFIFOBytes(fifoBuffer, fifoCount);
mpuIntStatus = getIntStatus();
// Memory update 7/7
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++)
dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
setDMPEnabled(false);
dmpPacketSize = 42;
resetFIFO();
getIntStatus();
} else
abort();
} else
abort();
i2cReadBits(MPU6050_RA_WHO_AM_I, MPU6050_WHO_AM_I_BIT, MPU6050_WHO_AM_I_LENGTH, buffer);
if(buffer[0] != 0x34)
abort();
setDMPEnabled(true);
zeroValues[0] = 0;
zeroValues[1] = 0;
zeroValues[2] = 0;
}
/**
* Initialize DMP inside MPU6050
* @return boolean
*/
uint8_t MPU6050::dmpInitialize() {
//Resetting MPU6050...
reset();
usleep(30000); // wait after reset
//Disabling sleep mode...
setSleepEnabled(false);
// get MPU hardware revision
//Selecting user bank 16...
setMemoryBank(0x10, true, true);
//Selecting memory byte 6...
setMemoryStartAddress(0x06);
//Checking hardware revision...
uint8_t hwRevision __attribute__((__unused__)) = readMemoryByte();
//Revision @ user[16][6] =
//hwRevision, HEX);
//Resetting memory bank selection to 0...
setMemoryBank(0, false, false);
// check OTP bank valid
//Reading OTP bank valid flag...
uint8_t otpValid __attribute__((__unused__)) = getOTPBankValid();
//OTP bank is
//otpValid ? F("valid!") : F("invalid!
// get X/Y/Z gyro offsets
//Reading gyro offset values...
/*
int8_t xgOffset = getXGyroOffset();
int8_t ygOffset = getYGyroOffset();
int8_t zgOffset = getZGyroOffset();
sleep(5);
for(int cnt = 0; cnt < 1000; cnt = cnt + 1)
{
std::cout << "X: " << typeid(xgOffset).name() << "Y: " << typeid(ygOffset).name() << "Z: " << typeid(zgOffset).name() << "\n";
sleep(1);
//xgOffset = (getXGyroOffset() + xgOffset)/2;
//ygOffset = (getYGyroOffset() + ygOffset)/2;
//zgOffset = (getZGyroOffset() + zgOffset)/2;
}
*/
//X gyro offset =
//xgOffset);
//Y gyro offset =
//ygOffset);
//Z gyro offset =
//zgOffset);
// setup weird slave stuff (?)
//Setting slave 0 address to 0x7F...
setSlaveAddress(0, 0x7F);
//Disabling I2C Master mode...
setI2CMasterModeEnabled(false);
//Setting slave 0 address to 0x68 (self)...
setSlaveAddress(0, 0x68);
/*
if (addr == 104)
{
std::cout << "Address: 104";
setSlaveAddress(0, 0x68);
}
else
{
std::cout << "Address: 105";
setSlaveAddress(0, 0x69);
}
* */
//Resetting I2C Master control...
resetI2CMaster();
usleep(20000);
// load DMP code into memory banks
//Writing DMP code to MPU memory banks (
// bytes)
if (writeProgMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE)) {
// write DMP configuration
//Writing DMP configuration to MPU memory banks (
// bytes in config def)
if (writeProgDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE)) {
//Setting clock source to Z Gyro...
setClockSource(MPU6050_CLOCK_PLL_ZGYRO);
//Setting DMP and FIFO_OFLOW interrupts enabled...
setIntEnabled(0x12);
//Setting sample rate to 200Hz...
setRate(4); // 1khz / (1 + 4) = 200 Hz
//Setting external frame sync to TEMP_OUT_L[0]...
setExternalFrameSync(MPU6050_EXT_SYNC_TEMP_OUT_L);
//Setting DLPF bandwidth to 42Hz...
setDLPFMode(MPU6050_DLPF_BW_42);
//Setting gyro sensitivity to +/- 2000 deg/sec...
setFullScaleGyroRange(MPU6050_GYRO_FS_2000);
//Setting DMP configuration bytes (function unknown)...
setDMPConfig1(0x03);
setDMPConfig2(0x00);
//Clearing OTP Bank flag...
setOTPBankValid(false);
/*
//Setting X/Y/Z gyro offsets to previous values...
setXGyroOffset(xgOffset);
setYGyroOffset(ygOffset);
setZGyroOffset(zgOffset);
//Setting X/Y/Z gyro user offsets to zero...
setXGyroOffsetUser(0);
setYGyroOffsetUser(0);
setZGyroOffsetUser(0);
*/
//Writing final memory update 1/7 (function unknown)...
uint8_t dmpUpdate[16], j;
uint16_t pos = 0;
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Writing final memory update 2/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Resetting FIFO...
resetFIFO();
//Reading FIFO count...
uint8_t fifoCount = getFIFOCount();
uint8_t fifoBuffer[128];
//fifoCount);
if (fifoCount > 0)
getFIFOBytes(fifoBuffer, fifoCount);
//Setting motion detection threshold to 2...
setMotionDetectionThreshold(2);
//Setting zero-motion detection threshold to 156...
setZeroMotionDetectionThreshold(156);
//Setting motion detection duration to 80...
setMotionDetectionDuration(80);
//Setting zero-motion detection duration to 0...
setZeroMotionDetectionDuration(0);
//Resetting FIFO...
resetFIFO();
//Enabling FIFO...
setFIFOEnabled(true);
//Enabling DMP...
setDMPEnabled(true);
//Resetting DMP...
resetDMP();
//Writing final memory update 3/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Writing final memory update 4/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Writing final memory update 5/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
while ((fifoCount = getFIFOCount()) < 3);
//Reading FIFO data...
getFIFOBytes(fifoBuffer, fifoCount);
//Reading interrupt status...
uint8_t mpuIntStatus __attribute__((__unused__)) = getIntStatus();
//Current interrupt status= mpuIntStatus, HEX
//Reading final memory update 6/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
readMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//Waiting for FIFO count > 2...
while ((fifoCount = getFIFOCount()) < 3);
//Current FIFO count=
//fifoCount);
//Reading FIFO data...
getFIFOBytes(fifoBuffer, fifoCount);
//Reading interrupt status...
mpuIntStatus = getIntStatus();
//Current interrupt status=
//mpuIntStatus, HEX
//Writing final memory update 7/7 (function unknown)...
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
//DMP is good to go! Finally.
//Disabling DMP (you turn it on later)...
setDMPEnabled(false);
//Setting up internal 42-byte (default) DMP packet buffer...
dmpPacketSize = 42;
/*if ((dmpPacketBuffer = (uint8_t *)malloc(42)) == 0) {
return 3; // TODO: proper error code for no memory
}*/
//Resetting FIFO and clearing INT status one last time...
resetFIFO();
getIntStatus();
} else {
//ERROR! DMP configuration verification failed.
return 2; // configuration block loading failed
}
} else {
//ERROR! DMP code verification failed.
return 1; // main binary block loading failed
}
return 0; // success
}
unsigned char dmpInitialize()
{
// reset device
mpu_reset();
DELAY_US(30*1000);
// disable sleep mode
setSleepEnabled(false);
// get MPU hardware revision
setMemoryBank(0x10, true, true);
setMemoryStartAddress(0x06);
unsigned char hwRevision = readMemoryByte();
setMemoryBank(0, false, false);
// check OTP bank valid
unsigned char otpValid = getOTPBankValid();
// get X/Y/Z gyro offsets
char xgOffsetTC = getXGyroOffset();
char ygOffsetTC = getYGyroOffset();
char zgOffsetTC = getZGyroOffset();
// setup weird slave stuff (?)
// setSlaveAddress(0, 0x7F);
// setI2CMasterModeEnabled(false);
// setSlaveAddress(0, 0x68);
// resetI2CMaster();
DELAY_US(20*1000);
// load DMP code into memory banks
if (writeProgMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE,0,0,false))
{
if (writeProgDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE)) {
setClockSource(MPU6050_CLOCK_PLL_ZGYRO);
setIntEnabled(0x12);
setRate(4); // 1khz / (1 + 4) = 200 Hz
setExternalFrameSync(MPU6050_EXT_SYNC_TEMP_OUT_L);
setDLPFMode(MPU6050_DLPF_BW_42);
// setFullScaleGyroRange(MPU6050_GYRO_FS_2000);
// setFullScaleAccelRange(MPU6050_ACCEL_FS_16);
setDMPConfig1(0x03);
setDMPConfig2(0x00);
setOTPBankValid(false);
// setXGyroOffset(xgOffsetTC);
// setYGyroOffset(ygOffsetTC);
// setZGyroOffset(zgOffsetTC);
unsigned char dmpUpdate[16], j;
unsigned int pos = 0;
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
resetFIFO();
unsigned int fifoCount = getFIFOCount();
if (fifoCount > 128)
{
fifoCount = 128;
}
getFIFOBytes(fifoBuffer, fifoCount);
setMotionDetectionThreshold(2);
setZeroMotionDetectionThreshold(156);
setMotionDetectionDuration(80);
setZeroMotionDetectionDuration(0);
resetFIFO();
setFIFOEnabled(true);
setDMPEnabled(true);
resetDMP();
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
// while ((getFIFOCount()) < 3) {DELAY_US(500);}
//
// fifoCount = getFIFOCount();
//
// getFIFOBytes(fifoBuffer, fifoCount);
unsigned char mpuIntStatus = getIntStatus();
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
readMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
// while ((getFIFOCount()) < 3) {DELAY_US(500);}
//
// fifoCount = getFIFOCount();
// getFIFOBytes(fifoBuffer, fifoCount);
mpuIntStatus = getIntStatus();
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1], true, false);
setDMPEnabled(true);
resetFIFO();
getIntStatus();
} else {
return 2; // configuration block loading failed
}
} else {
return 1; // main binary block loading failed
}
return 0; // success
}
uint8_t MPU6050DMP::dmpInitialize() {
// reset device
DEBUG_PRINTLN(F("\n\nResetting MPU6050..."));
reset();
delay(30); // wait after reset
// enable sleep mode and wake cycle
/*Serial.println(F("Enabling sleep mode..."));
setSleepEnabled(true);
Serial.println(F("Enabling wake cycle..."));
setWakeCycleEnabled(true);*/
// disable sleep mode
DEBUG_PRINTLN(F("Disabling sleep mode..."));
setSleepEnabled(false);
// get MPU hardware revision
DEBUG_PRINTLN(F("Selecting user bank 16..."));
setMemoryBank(0x10, true, true);
DEBUG_PRINTLN(F("Selecting memory byte 6..."));
setMemoryStartAddress(0x06);
DEBUG_PRINTLN(F("Checking hardware revision..."));
uint8_t hwRevision = readMemoryByte();
DEBUG_PRINT(F("Revision @ user[16][6] = "));
DEBUG_PRINTLNF(hwRevision, HEX);
DEBUG_PRINTLN(F("Resetting memory bank selection to 0..."));
setMemoryBank(0, false, false);
// check OTP bank valid
DEBUG_PRINTLN(F("Reading OTP bank valid flag..."));
uint8_t otpValid = getOTPBankValid();
DEBUG_PRINT(F("OTP bank is "));
DEBUG_PRINTLN(otpValid ? F("valid!") : F("invalid!"));
// get X/Y/Z gyro offsets
DEBUG_PRINTLN(F("Reading gyro offset TC values..."));
int8_t xgOffsetTC = getXGyroOffsetTC();
int8_t ygOffsetTC = getYGyroOffsetTC();
int8_t zgOffsetTC = getZGyroOffsetTC();
DEBUG_PRINT(F("X gyro offset = "));
DEBUG_PRINTLN(xgOffset);
DEBUG_PRINT(F("Y gyro offset = "));
DEBUG_PRINTLN(ygOffset);
DEBUG_PRINT(F("Z gyro offset = "));
DEBUG_PRINTLN(zgOffset);
// setup weird slave stuff (?)
DEBUG_PRINTLN(F("Setting slave 0 address to 0x7F..."));
setSlaveAddress(0, 0x7F);
DEBUG_PRINTLN(F("Disabling I2C Master mode..."));
setI2CMasterModeEnabled(false);
DEBUG_PRINTLN(F("Setting slave 0 address to 0x68 (self)..."));
setSlaveAddress(0, 0x68);
DEBUG_PRINTLN(F("Resetting I2C Master control..."));
resetI2CMaster();
delay(20);
// load DMP code into memory banks
DEBUG_PRINT(F("Writing DMP code to MPU memory banks ("));
DEBUG_PRINT(MPU6050_DMP_CODE_SIZE);
DEBUG_PRINTLN(F(" bytes)"));
if (writeProgMemoryBlock(dmpMemory, MPU6050_DMP_CODE_SIZE)) {
DEBUG_PRINTLN(F("Success! DMP code written and verified."));
// write DMP configuration
DEBUG_PRINT(F("Writing DMP configuration to MPU memory banks ("));
DEBUG_PRINT(MPU6050_DMP_CONFIG_SIZE);
DEBUG_PRINTLN(F(" bytes in config def)"));
if (writeProgDMPConfigurationSet(dmpConfig, MPU6050_DMP_CONFIG_SIZE)) {
DEBUG_PRINTLN(F("Success! DMP configuration written and verified."));
DEBUG_PRINTLN(F("Setting clock source to Z Gyro..."));
setClockSource(MPU6050_CLOCK_PLL_ZGYRO);
DEBUG_PRINTLN(F("Setting DMP and FIFO_OFLOW interrupts enabled..."));
setIntEnabled(0x12);
DEBUG_PRINTLN(F("Setting sample rate to 200Hz..."));
setRate(4); // 1khz / (1 + 4) = 200 Hz
DEBUG_PRINTLN(F("Setting external frame sync to TEMP_OUT_L[0]..."));
setExternalFrameSync(MPU6050_EXT_SYNC_TEMP_OUT_L);
DEBUG_PRINTLN(F("Setting DLPF bandwidth to 42Hz..."));
setDLPFMode(MPU6050_DLPF_BW_42);
DEBUG_PRINTLN(F("Setting gyro sensitivity to +/- 2000 deg/sec..."));
setFullScaleGyroRange(MPU6050_GYRO_FS_2000);
DEBUG_PRINTLN(F("Setting DMP configuration bytes (function unknown)..."));
setDMPConfig1(0x03);
setDMPConfig2(0x00);
DEBUG_PRINTLN(F("Clearing OTP Bank flag..."));
setOTPBankValid(false);
DEBUG_PRINTLN(F("Setting X/Y/Z gyro offset TCs to previous values..."));
setXGyroOffsetTC(xgOffsetTC);
setYGyroOffsetTC(ygOffsetTC);
setZGyroOffsetTC(zgOffsetTC);
//DEBUG_PRINTLN(F("Setting X/Y/Z gyro user offsets to zero..."));
//setXGyroOffset(0);
//setYGyroOffset(0);
//setZGyroOffset(0);
DEBUG_PRINTLN(F("Writing final memory update 1/7 (function unknown)..."));
uint8_t dmpUpdate[16], j;
uint16_t pos = 0;
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Writing final memory update 2/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Resetting FIFO..."));
resetFIFO();
DEBUG_PRINTLN(F("Reading FIFO count..."));
uint16_t fifoCount = getFIFOCount();
uint8_t fifoBuffer[128];
DEBUG_PRINT(F("Current FIFO count="));
DEBUG_PRINTLN(fifoCount);
getFIFOBytes(fifoBuffer, fifoCount);
DEBUG_PRINTLN(F("Setting motion detection threshold to 2..."));
setMotionDetectionThreshold(2);
DEBUG_PRINTLN(F("Setting zero-motion detection threshold to 156..."));
setZeroMotionDetectionThreshold(156);
DEBUG_PRINTLN(F("Setting motion detection duration to 80..."));
setMotionDetectionDuration(80);
DEBUG_PRINTLN(F("Setting zero-motion detection duration to 0..."));
setZeroMotionDetectionDuration(0);
DEBUG_PRINTLN(F("Resetting FIFO..."));
resetFIFO();
DEBUG_PRINTLN(F("Enabling FIFO..."));
setFIFOEnabled(true);
DEBUG_PRINTLN(F("Enabling DMP..."));
setDMPEnabled(true);
DEBUG_PRINTLN(F("Resetting DMP..."));
resetDMP();
DEBUG_PRINTLN(F("Writing final memory update 3/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Writing final memory update 4/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Writing final memory update 5/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Waiting for FIFO count > 2..."));
while ((fifoCount = getFIFOCount()) < 3);
DEBUG_PRINT(F("Current FIFO count="));
DEBUG_PRINTLN(fifoCount);
DEBUG_PRINTLN(F("Reading FIFO data..."));
getFIFOBytes(fifoBuffer, fifoCount);
DEBUG_PRINTLN(F("Reading interrupt status..."));
uint8_t mpuIntStatus = getIntStatus();
DEBUG_PRINT(F("Current interrupt status="));
DEBUG_PRINTLNF(mpuIntStatus, HEX);
DEBUG_PRINTLN(F("Reading final memory update 6/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
readMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("Waiting for FIFO count > 2..."));
while ((fifoCount = getFIFOCount()) < 3);
DEBUG_PRINT(F("Current FIFO count="));
DEBUG_PRINTLN(fifoCount);
DEBUG_PRINTLN(F("Reading FIFO data..."));
getFIFOBytes(fifoBuffer, fifoCount);
DEBUG_PRINTLN(F("Reading interrupt status..."));
mpuIntStatus = getIntStatus();
DEBUG_PRINT(F("Current interrupt status="));
DEBUG_PRINTLNF(mpuIntStatus, HEX);
DEBUG_PRINTLN(F("Writing final memory update 7/7 (function unknown)..."));
for (j = 0; j < 4 || j < dmpUpdate[2] + 3; j++, pos++) dmpUpdate[j] = pgm_read_byte(&dmpUpdates[pos]);
writeMemoryBlock(dmpUpdate + 3, dmpUpdate[2], dmpUpdate[0], dmpUpdate[1]);
DEBUG_PRINTLN(F("DMP is good to go! Finally."));
DEBUG_PRINTLN(F("Disabling DMP (you turn it on later)..."));
setDMPEnabled(false);
DEBUG_PRINTLN(F("Setting up internal 42-byte (default) DMP packet buffer..."));
dmpPacketSize = 42;
/*if ((dmpPacketBuffer = (uint8_t *)malloc(42)) == 0) {
return 3; // TODO: proper error code for no memory
}*/
DEBUG_PRINTLN(F("Resetting FIFO and clearing INT status one last time..."));
resetFIFO();
getIntStatus();
} else {
DEBUG_PRINTLN(F("ERROR! DMP configuration verification failed."));
return 2; // configuration block loading failed
}
} else {
DEBUG_PRINTLN(F("ERROR! DMP code verification failed."));
return 1; // main binary block loading failed
}
return 0; // success
}