BMX160 magnetometer self-test fails

[Nikosant03]

Hi everyone,

I have reused the BMI160 and BMM150 drivers to get some data from the BMX160. Accel and gyro look to work fine (I mean I get meaningful values will I rotate/move the sensor) but I am not sure about the magnetometer. These are some sample measurements (all values are in LSB)

In order to confirm that all sensor works normally, I've called the bmi160_perform_self_test() and  bmm150_perform_self_test() functions.

Accel and gyro perform successfully self-test but magnetometer doesn't. It returns error code 2 which means "BMM150_E_DEV_NOT_FOUND".  This is awkward since I am able to receive data before calling the self-test function (as you can see from the image above). Also after calling the bmm150_perform_self_test() function the magnetometer "freezes" (it continuously showing the same values) and I have to restart the board by cutting the power off.

Any suggestion? Maybe this is a bug of the bmm150 driver?

[Nikosant03]

This is how I set-up magnetometer's interface

  bmm150.settings.pwr_mode = BMM150_NORMAL_MODE; 
  rslt = bmm150_set_op_mode(&bmm150);

  bmm150.settings.preset_mode = BMM150_PRESETMODE_LOWPOWER; 
  rslt = bmm150_set_presetmode(&bmm150);                    
  APP_ERROR_CHECK(rslt);

[Nikosant03]

Anyone?

[Nikosant03]

Could someone from the moderators assist me?