Mohamed Salem 3687e48684 Add complete firmware stack with USB-CDC proof of life

Dockerized build system (Dockerfile, docker-compose, build.sh) with
Pico SDK cross-compilation. Modular CMake split into project_config,
mcu_config, and sources_config under cmake/. Component architecture
following inc/prg/cfg convention: STD_TYPES, MCU_USB, HAL_COM,
APP_CLSW, SYS_ECU. Full call chain SYS_ECU -> APP_CLSW -> HAL_COM
-> MCU_USB verified end-to-end on RP2040-Zero hardware over USB-CDC.
Includes flash.sh for automated .uf2 flashing on macOS and
devcontainer config for VS Code.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-12 18:23:24 +02:00

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Color Switcher

A Raspberry Pi Pico project that sends commands over UART to a connected computer. Written entirely in C using the Pico SDK.

Prerequisites

Docker and Docker Compose

No local toolchain installation needed — everything runs inside the container.

Building

# Build the Docker image (first time only, or after Dockerfile changes)
docker compose build

# Compile the firmware
docker compose up

The .uf2 firmware file will appear in build/.

Flashing

Hold the BOOTSEL button on the Pico and plug it into USB
It mounts as a USB mass storage device
Drag the .uf2 file from build/ onto the Pico
The Pico reboots and runs the firmware

Interactive Shell

To drop into the build container for debugging or manual commands:

docker compose run --rm pico-build bash