gcc-cheatsheet.md

How to prevent GCC from optimize out my variables?

Use a static volatile variable:

static volatile _d;

...

void myfunction(){
  if(some_condition){
    _d; // debugger 
  }
}

How to pause hardware timers when a breakpoint is hit?

Hardware timers (on STM32) is already paused when a breakpoint is hit. See: #8

Examining the memory

https://sourceware.org/gdb/onlinedocs/gdb/Memory.html

x addr

x/10x &dmabuf

Examining the call stack

Use up when a breakpoint is hit. (See: https://www.cse.unsw.edu.au/~learn/debugging/modules/gdb_call_stack/)