Hi,
I am trying to write standalone code for MPU9250 in CC2650 .
When i try to do i2ctransfer for WHO_AM_I for Mpu9250 , i see error. I am not able to make out what is reason for this.
Also saw in wiki, that :
- Write 01:68 to Register Device ID (this selects I2C bus 1 and Movement sensor)
How do i do this, as i am feeling I2C bus that i selected is on bus 0.
Can you please glance through my code and let me know whats wrong here.
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I2C_init();
I2C_Params_init(&i2cParams);
i2cParams.bitRate = I2C_400kHz;
i2cParams.transferMode =I2C_MODE_BLOCKING;
i2c = I2C_open(Board_I2C, &i2cParams);
if (i2c == NULL) {
System_abort("Error Initializing I2C\n");
}
else {
System_printf("I2C Initialized!\n");
}
Task_sleep(1000000 / Clock_tickPeriod);
System_flush();
//Read MPU9250 device ID
txBuffer[0] = WHO_AM_I;
i2cTransaction.slaveAddress = Board_MPU9250_ADDR;//MPU9250 ADDR;
i2cTransaction.writeBuf = txBuffer;
i2cTransaction.writeCount = 1;
i2cTransaction.readBuf = rxBuffer;
i2cTransaction.readCount = 1;
if(PIN_getOutputValue(Board_MPU_POWER) == Board_MPU_POWER_ON)
System_printf("MPU9250 powered On\n");
if (I2C_transfer(i2c, &i2cTransaction)){
System_printf("Device ID: %x%x\n", rxBuffer[0]);
}
else {
System_printf("Device ID fail!\n");
}
if (I2C_transfer(i2c, &i2cTransaction)){
System_printf("Device ID: %x%x\n", rxBuffer[0]);
}
else {
System_printf("Device ID fail!\n");
}
System_flush();
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