Debugging
================

Access all registers:

    (gdb) x/x 0xE000ED14 
    0xe000ed14:     Cannot access memory at address 0xe000ed14
    (gdb) 
    0xe000ed18:     Cannot access memory at address 0xe000ed18
    (gdb) show mem inaccessible-by-default
    Unknown memory addresses will be treated as inaccessible.
    (gdb) set mem inaccessible-by-default off
    (gdb) x/x 0xE000ED14 
    0xe000ed14:     0x00000200

Uploading via SWD
====================

upload_blackmagic.sh:

    #!/bin/bash
    arm-none-eabi-gdb build/stm32f401cc_telemetry.elf < load_blackmagic.gdb
    sleep 1.0

load_blackmagic.gdb:

    target extended-remote /dev/ttyACM0
    monitor swdp_scan
    attach 1
    load
    quit