nRF52, SDKv15.2 NRF_BREAKPOINT_COND strange behavior

[Rajneesh]

Hello Nordic team

I am working on ble_app_buttonless_dfu example code and implemented accelerometer code via TWI0. And Accelerometer INT pin connected on GPIO via gpiote. I noticed when device receive interrupt on GPIO from Accel it execute ISR and reset the board. I have confirmed device get retested by LED blinking. Note: code is not in debug mode.

The same code is working perfect on SDKv-11.0

I spent much time to resolve this issue but still no success. I also posted similar king of issue on other thread ( https://devzone.nordicsemi.com/f/nordic-q-a/40680/ble_app_buttonless_dfu-reset-on-pin-interrupt ). 

I refer following thread regarding this issue:

https://devzone.nordicsemi.com/f/nordic-q-a/34781/nrf_breakpoint_cond

https://devzone.nordicsemi.com/f/nordic-q-a/32973/nrf_breakpoint_cond-in-debug

https://devzone.nordicsemi.com/f/nordic-q-a/37866/ble_app_uart-nrf_breakpoint_cond-sdk_15-0-0/148406#148406

https://devzone.nordicsemi.com/f/nordic-q-a/30528/code-stops-at-nrf_breakpoint_cond

devzone.nordicsemi.com/.../what-does-nrf_breakpoint_cond-mean

I think lots of developer facing similar kind of issue with latest SDK. Still I didn't find any solution regarding this.

Any help from Nordic is appreciated. 

Regards

Raj

[Jørgen Holmefjord]

Which function is returning error code 8 (this means invalid state)? If you set the DEBUG flag as described in this thread, you should see this information in the log output if you gave logging enabled.

[Rajneesh]

Hi Jørgen

app_timer_start return error in APP_ERROR_CHECK(err_code) and system get restart.

[Jørgen Holmefjord]

As described in the API documentation, this indicate that:

NRF_ERROR_INVALID_STATE

If the application timer module has not been initialized or the timer has not been created.

Did you initialize the app_timer module and create the timer that you are trying to start?

[Rajneesh]

Hi Jorden, Timer initialized and created correctly. But in my application I am multiple time stop and start same timer with loaded new timer value. So one or two times timer started correctly but some time it fails and return error.

[Jørgen Holmefjord]

There is nothing else that can cause that error code from that function. Can you post your project or the code used configuring and starting/stopping the timers?