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README.md

STM32G4 blink template

Blinks the LD2 LED (PA5) on a Nucleo-G474RE using libopencm3.

Set BLINK_PORT / BLINK_PIN for your board in src/main.c.

Toolchain

The Nix dev shell provides:

  • arm-none-eabi-gcc (via gcc-arm-embedded)
  • openocd for flashing and debugging
  • stlink utilities (st-flash, st-info)
  • libopencm3 built for stm32/g4 (exposed as $LIBOPENCM3_DIR)

Build

make

Flash

make flash

This uses OpenOCD with the built-in ST-Link interface config.