MPU Fault : Stacking error & Data access violation, when a sensor device is added

RE: MPU Fault : Stacking error & Data access violation, when a sensor device is added

Hossein Kasaei — Tue, 26 Sep 2023 20:03:31 GMT

Wow! I I just remembered that this error is the same as the error I had here. Actually my program put the cpu to system off mode at the startup for power management and the user can wake it up later, and that's why the sensor driver is causing this error cause I don't put it to sleep mode before system off :

pm_device_action_run(sensor, PM_DEVICE_ACTION_SUSPEND);

Although I don't understand why I have to suspend lis2dh driver before entering system off cause that's not the case for other sensors. that's still a mystery for me!

RE: MPU Fault : Stacking error & Data access violation, when a sensor device is added

Øivind — Tue, 26 Sep 2023 13:57:13 GMT

Using "st,lis2dh" should work, as it supports lis3dh as you mentioned.

These configs are used in the zephyr sample, have you tried them?

CONFIG_STDOUT_CONSOLE=y
CONFIG_CBPRINTF_FP_SUPPORT=y

Have you tried the other trigger modes?

LIS2DH_TRIGGER_NONE=y

LIS2DH_TRIGGER_OWN_THREAD=y
LIS2DH_THREAD_STACK_SIZE=8192

RE: MPU Fault : Stacking error & Data access violation, when a sensor device is added

Hossein Kasaei — Mon, 25 Sep 2023 18:41:03 GMT

Hi,

I've tested this config and it didn't help.

I decided to use <st,lis3dh> compatible but now I get the compile error undefined reference to `__device_dts_ord_108' which I couldn't resolve cause there is no CONFIG_LIS3DH :)

RE: MPU Fault : Stacking error & Data access violation, when a sensor device is added

Øivind — Mon, 25 Sep 2023 16:23:37 GMT

Hi,

Could you try increasing your the size of your main stack?

CONFIG_MAIN_STACK_SIZE=16384

If this works, this size is probably overkill, so experiment with different sizes.