How to debug crashing application?

Firmware
10

If you are building localy use DEBUG_BUILD=y and add

void debug_output_(const char *p)
    {
      static boolean once = false;
     if (!once)
       {
         once = true;
         Serial1.begin(115200); // You can choose where the debug goes 
       }

     Serial1.print(p);
    }

in you application.cpp.

Then add all the DEBUG("connection closed %d 0x%04x",retValue, address); you want.

You get to leave em all in and in a release build they are automagically removed!

Happy debugging!

If you have an JTAG add USE_SWO_JTAG=y too!

See for details