About BMI160 reading issue.

[Harishsam07]

Dear all
we are trying to interface BMI160 sensor with ARM controller through I2C protocol but we are not getting proper reading from sensor we need basic initialize register setting of BMI160.
standard reading format should be value 0.0 m/s^2 0.0 m/s^2 9.8 m/s^2
but we getting
-1.8183590m/s^2 Ay=-6.0849610m/s^2 Az=-0.6469730m/s^2

[punitvara]

@Harishsam07 Which ARM board ? Can you add specific details please ?

[Harishsam07]

we are using ARM Controller LPC2138 and I2C protocol. now we facing issue accelerometer reading are not getting refresh.

[Harishsam07]

Currently we have set following initialization parameter but accelerometer reading are not getting refresh is constant while changing the position of BMI160.

    i2c_write_data(0x7E,0xB6);                       //Soft reset to clean register
delay(100);	
i2c_write_data(0x7E,0xB0);                       //clear all
delay(100);	

i2c_write_data(0x46,0x00);                       //FIFO Disable
delay(10);
i2c_write_data(0x47,0x00);                       //FIFO Disable
delay(10);

i2c_write_data(0x70,0x06);                       //Enable Only I2C Disable SPI,Disable Watchdog timer.
delay(10);
			
i2c_write_data(0x77,0x00);                        //Offset disable
delay(10);

i2c_write_data(0x43,0x03);	                //GYRO_RAGE -> +- 250°/s : 7.6 m°/LSB
delay(10);
i2c_write_data(0x41,0x0C);	                //ACC_RANGE => +- 16g
delay(10);
i2c_write_data(0x40,0x2C);	                // ACC_CONF data rate : 1600Hz
delay(10);
i2c_write_data(0x42,0x2C);	                // GYRO_CONF data rate : 1600Hz
delay(10);

i2c_write_data(0x7E,0x11);	//Power up Accelerometer
delay(10);
i2c_write_data(0x7E,0x15);  //Power up Gyroscope
delay(10);

[punitvara]

I don't have access to BMI160 and LPC2138 from inventory at the moment. So I can't debug this issue here. Current BMI160 driver communicates through SPI and it seems like you are trying to access through I2C.

@Harishsam07 Read 0X1B status register. It will show you what function(such as gyroscope, magnetometer or accelerator) is enabled for data ready. Since you are developing support for I2C interface for BMI160 you have to take care of each and every registers not just initialization.

[Harishsam07]

I have solved my isuue successfuly..

[marcoantonioara]

BMI160 has driver to SPI in Zephyr. I have this sensor connected in a board using the i2c.
Please share your code with us