Device not starting after power off reset, but suddenly starts if i start debug session

RE: Device not starting after power off reset, but suddenly starts if i start debug session

jessevdam — Mon, 23 Sep 2019 16:24:02 GMT

I am not using the UART, i am using the RTT debugger for the console logging. But the problem was that a hard reset(power off on) was not working, Only if I connected the debugger and started a debug session it suddenly started working again, as if a hidden bit inside the cpu somehow got in a illegal state, which somehow got restored after it was connected to the debugger.

RE: Device not starting after power off reset, but suddenly starts if i start debug session

Edvin — Mon, 23 Sep 2019 08:33:12 GMT

Hello,

Do you use UART or UART logging in your application? I suspect that you receive an event: APP_UART_COMMUNICATION_ERROR.

Search for this in your project, and locate and comment out the line:

APP_ERROR_HANDLER(p_event->data.error_communication);

inside this event. Does that change the behavior of your device when you don't have the debugger attached?