Memory breakpoint testing mbed OS 5

main.cpp

#include "mbed.h"

DigitalOut led1(LED1);

// main() runs in its own thread in the OS
int main() {
    Serial pc(USBTX, USBRX);
    pc.baud(115200);

    char test[200];

    for (size_t ix = 0; ix < sizeof(test); ix++) {
        test[ix] = rand() % 255;
    }

    wait(osWaitForever);
}

How to use:

1. Break on line 12.

2. Inspect address of test in the watch window via (&test).

3. Add a memory watch using the Debug console via:

   -exec watch *0x20001950
   

   (where 0x20001950 is the address of test offset by 68 (but less than 200 :-)) bytes)

4. Hit the 'Play' button.

5. The trap should fire. Inspect the value of ix.