BMI270 FIFO acc gyr aux frame count not match

[HMK]

Hi,

I try the code from below link to use fifo watermark header mode.

https://github.com/boschsensortec/BMI270-Sensor-API/blob/master/bmi270_examples/aux_fifo_watermark_h...

I got  data.  My watermark level is 650. I expect got around 30 frame for each sensor, and each sensor's frame count should be equal. But actually frame count I got is like below:

The acc frame count is less than gyro and aux.

Could please help?

Thanks,

Yang

[BSTRobin]

Hi HMK,

You can refer to attached example code. If you used application board 3.0+BMI270 shuttle board 3.0 and run the code in COINES environement, you should run the code in RAM or Flash.
mingw32-make LOCATION=RAM TARGET=MCU_APP30 download
mingw32-make LOCATION=FLASH TARGET=MCU_APP30 download

[HMK]

Hi,

We don't have COINES board and the  environement.  It seems we got the dummy bytes. How to avoid this?

Thanks,

Yang

[HMK]

We also tried the headless mode. Got same result. 

The return value of below code is  BMI2_W_DUMMY_BYTE.

rslt = check_dummy_frame(BMI2_FIFO_HEADERLESS_DUMMY_ACC, &data_index, skip_length, fifo);

Thanks.

[BSTRobin]

Hi HMK,

You can check the length of your FIFO and whether the data read is an integer multiple of the data per frame.