swaits
7a54c4dff3
- Each board now exports DisplayDriver type and create_display() async fn - ESP32-S3 boards share SSD1306 create_display in board/esp32s3.rs - RAK WisBlock has its own SSD1306 create_display (different I2C type) - Wio Tracker has SH1106 create_display (different display IC) - Removed all cfg_if from display.rs — calls board::create_display() - Removed display init retry logic (single attempt, return None on failure) - ZERO board-specific #[cfg(feature)] outside board/, host/mod.rs, and hal/
DongLoRa Firmware
Embedded Rust firmware for DongLoRa boards. Exposes the LoRa radio over USB CDC-ACM using a COBS-framed binary protocol.
Building
just setup # one-time toolchain install
just build heltec_v4 # build for a specific board
just flash heltec_v4 # build + flash
just check-all # compile-check all boards
just clippy heltec_v4 # lint
just test # host-side protocol unit tests
All commands are run from the firmware/ directory.
Supported Boards
| Board | MCU | Radio | Target |
|---|---|---|---|
| Heltec V3 | ESP32-S3 | SX1262 | xtensa-esp32s3-none-elf |
| Heltec V4 | ESP32-S3 | SX1262 | xtensa-esp32s3-none-elf |
| RAK WisBlock 4631 | nRF52840 | SX1262 | thumbv7em-none-eabihf |
Adding a Board
See src/board/PORTING.md.
Protocol
See PROTOCOL.md for the complete wire format specification.