cockTag-fw

firmware for nRF51 chips that is coincidentally compatible with the FindMy (AirTag) ecosystem.

It sends out advertisement keys defined in keys.h, rotating keys every hour.

Setup

nix develop --extra-experimental-features nix-command --extra-experimental-features flakes
mkdir build
cd build
cmake .. -GNinja

Build

cd build
ninja

Flash using JLink

cd build
cmake --build . --target nrfjprog_flash_softdevice
cmake --build . --target nrfjprog_flash

Flash using GDB

export GDB_REMOTE=/dev/ttyUSB0 # BlackMagic Probe
export GDB_REMOTE=farpatch.local:2022 # Farpatch
cd build
cmake --build . --target gdb_flash_softdevice
cmake --build . --target gdb_flash

Debug using GDB

export GDB_REMOTE=/dev/ttyUSB0 # BlackMagic Probe
export GDB_REMOTE=farpatch.local:2022 # Farpatch
./run_gdb.sh