BMA456 fifo_err flag not working

[augusto1]

Hello,

I'm using a BMA456 and i'm having trouble with the fifo_err flag in the ERR_REG ( 0x02 ) register.

The device is configured as follows:

•  Accelerometer
  • Nominal sampling frequency is 1600 Hz
  • Range is +/- 2G
  • Mode is set to high-performance
• FIFO 
  • Overwrite when full
  • Unfiltered data with no downsampling
  • Headerless mode

I'm performing a test where i let the FIFO overflow but the flag is never set. The FIFO seems to be working fine and filling.

Am i missing some configurations?

I'm using a custom driver for space constraints but i based the logic on your example fifo_full_headerless_mode.

I suspect that the problem may be that i'm not initializing the ASIC but i'm following your example which doesn't initialize it either.

Thanks for the support.

[BSTRobin]

Hello augusto1,

Did you refer SW code in github?
https://github.com/BoschSensortec/BMA456-Sensor-API/blob/master/examples/bma456/generic/fifo_full_he...

[augusto1]

Yes, that is the example i used to base my custom library. The example uses the fifo full interrupt while i would like to use the fifo_err flag to detect a fifo overflow.

[augusto1]

No help? Does anyone know if in order to read the fifo_err flag i have to initialize the ASIC? Is it possible to have a list of function supported by the BMA456 with and witouth the ASIC?

Thanks

[augusto1]

Again.. sorry to bother.

Is it possible to have a list of function supported by the BMA456 with and witouth the ASIC?

I can't find this information in the datasheet.

Also, why some example initialize the ASIC while others don't?

I really would like an answer.