BMA400 Sleep Mode Issue

[Dan599]

Hello,

I am working on a project with a BMA400 and an nRF5340 running Zephyr. We are using the sensor API from here: https://github.com/BoschSensortec/BMA400-API. 

I call the following functions to setup without any problems:

bma400_interface_init()

bma400_soft_reset()

bma400_init()

The chip ID is read correctly as 0x90.

I then configure the settings used in this example (lines 64-92): https://github.com/BoschSensortec/BMA400-API/blob/master/examples/fifo_watermark_xyz_data/fifo_water....

The issue occurs when I try to set the power mode to normal. I call the bma400_set_power_mode() function with BMA400_MODE_NORMAL (i.e. 0x02). However, the device remains in sleep mode and reading the STATUS (0x03) register confirms this.

Any help would be greatly apprecicated.

Regards,

Dan

[Minhwan]

Hello Dan, 

I tested it quickly, and I got right answer. 

Please check my example code. (I just added getting power mode with fifo example code. ) 

By the way, I tested this one in COINES v2.6.

https://www.bosch-sensortec.com/software-tools/tools/coines/

Thanks, 

[Dan599 · Accepted solution]

Hi, sorry for the late response.

We discovered the issue was related to some Zephyr functions and not the BMA400 API or COINES. Thanks for the help.

Regards,

Dan