Files
firmware/CHANGELOG.md
T
swaits 7184610eea feat: migrate to embassy-executor 0.10
Bump embassy-executor 0.9 -> 0.10 and embassy-rp 0.9 -> 0.10 from crates.io.
Patch esp-hal, esp-rtos, esp-backtrace, esp-println from esp-rs/esp-hal main
branch (esp-rtos 0.2.0 on crates.io pins embassy-executor ^0.9).

API migrations:
- embassy-executor: arch-cortex-m -> platform-cortex-m feature rename
- embassy-executor: SpawnToken now returned as Result from task functions
- esp-hal main: efuse::Efuse::mac_address() -> efuse::base_mac_address()
- esp-hal main: esp_rtos::start() now requires SoftwareInterrupt<0>
- embassy-rp 0.10: SPI constructor requires DMA interrupt bindings

Also fixes UART display stuck on splash (sent Reset instead of On at boot)
and switches just check to clippy -D warnings.
2026-04-11 02:34:04 -06:00

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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/),
and this project adheres to [Semantic Versioning](https://semver.org/).
## [Unreleased]
### Changed
- Migrated to embassy-executor 0.10 and embassy-rp 0.10
- ESP crates (esp-hal, esp-rtos, esp-backtrace, esp-println) patched from
esp-rs/esp-hal main branch until esp-rtos publishes with 0.10 support
- Adapted to embassy-executor 0.10 SpawnToken API (task functions now return
`Result<SpawnToken, SpawnError>`, `Spawner::spawn` no longer returns Result)
- Adapted to esp-hal main branch API changes: `efuse::base_mac_address()`,
`esp_rtos::start` now requires `SoftwareInterrupt`, embassy-rp SPI
constructor now requires DMA interrupt bindings
- `just check` now runs clippy with `-D warnings` instead of plain `cargo check`
- Rust toolchain bumped to 1.94 in mise.toml
### Fixed
- UART boards (heltec_v3_uart) display stuck on splash screen after boot.
Host task sent `DisplayCommand::Reset` (which sets disconnected=true) instead
of `DisplayCommand::On`. UART has no DTR, so nothing ever cleared it.
## [0.3.0] - 2026-04-10
### Added
- Waveshare RP2040-LoRa board support (RP2040 + SX1262, no OLED, LED on GPIO25)
- First RP2040 board — third MCU family after ESP32-S3 and nRF52840
- New `hal/rp2040.rs` module with MCU primitives (SPI, USB, flash unique ID)
- USB-C via FPC ribbon cable to adapter board
- PE4259 antenna switch on GPIO17, 850-930 MHz (HF)
### Changed
- `cortex-m-rt/set-vtor` moved from global dependency to per-board feature
(Cortex-M0+ has no VTOR register)
- `build.rs` memory.x selection is now target-aware (thumbv6m vs thumbv7em)
## [0.2.1] - 2026-04-07
### Fixed
- Display stuck on status screen after USB disconnect (stale radio status
updates re-rendered dashboard over splash because `disconnected` flag was
not set in the `Reset` handler)
- Radio left running after host disconnect, now sends `StopRx` when DTR drops
- System deadlock when host app closes serial port while radio is receiving
(unsolicited responses in radio task now use `try_send` to avoid blocking
on a full response channel)
- LED orphaned if OLED display initialization fails (display task now falls
back to a LED-only event loop instead of returning early)
## [0.2.0] - 2026-04-07
### Added
- Wio Tracker L1 board support (nRF52840 + SX1262, SH1106 OLED)
- LED blink on packet activity: brief flash on RX and TX when display is on
- RX brightness scales with SNR (stronger signal = brighter)
- Works on all boards with a user LED (Heltec V3/V4, Wio Tracker)
- Native USB CDC-ACM support for Heltec V3 (requires hardware mod: solder R29/R3)
- `heltec_v3_uart` feature for stock (unmodified) V3 boards via CP2102 bridge
- `RgbLed` trait and `SimpleLed` driver for GPIO-based LEDs
- `LoRaBoard` trait with full associated types (`RadioParts`, `CommParts`,
`DisplayParts`, `DisplayDriver`, `LedDriver`) and `BoardParts<R, C, D, L>` struct
### Changed
- Major firmware architecture reorganization:
- `hal/` module for MCU-specific primitives (ESP32-S3, nRF52840)
- `driver/` module for hardware peripheral drivers (SH1106, SimpleLed)
- `host/` module for unified USB/UART communication with internal cfg dispatch
- `board/` contains only board definitions — no MCU helpers or drivers mixed in
- Board files are declarative wiring diagrams calling hal primitives
- `run()` function has zero board-specific conditional compilation
- Display init moved to board layer (`create_display()`) — display task has no cfg
- Flattened `radio/` and `display/` directories (no single-file directories)
- `build.rs` auto-discovers boards by content (implements `LoRaBoard`) and
helper modules by `use super::` imports — no exclusion lists
- `check` and `clippy` commands now use `--release` profile
- Deduplicated USB/UART protocol framing (shared `CobsDecoder` + `route_command`)
- Removed `ErrorCode::CrcError` (SX1262 silently drops bad-CRC packets)
### Fixed
- Display stuck on splash screen for UART boards (disconnected flag started true)
## [0.1.0] - 2026-03-15
### Added
- Transparent LoRa radio over USB CDC-ACM (VID `1209`, PID `5741`)
- COBS-framed fixed-size LE binary protocol (9 commands, 7 responses)
- Radio configuration: frequency, bandwidth, spreading factor, coding rate, TX power
- Continuous RX mode with RSSI/SNR per packet
- Single-shot TX with optional per-packet config override
- SSD1306 OLED display support with status dashboard
- Radio state, frequency, modulation parameters
- Packet counters (RX/TX)
- RSSI sparkline (1-minute history, TX shown as dotted bars)
- Combined splash/waiting screen on disconnect
- Auto-detect USB host connect/disconnect via DTR
- Config validation against per-board hardware limits
- `TX_POWER_MAX` sentinel (`-128`): auto-use the board's maximum TX power
- Board support: Heltec V3, Heltec V4, RAK WisBlock 4631
- Python host library (`donglora` on PyPI) with `pip install` and `donglora-mux` CLI
- USB multiplexer for sharing one dongle with multiple applications
- Two-way LoRa bridge over TCP (`examples/lora_bridge.py`)
### Technical
- Embassy async runtime (no threads, CPU sleeps when idle)
- Zero-config: boots and waits for host commands
- Protocol-agnostic: firmware has no opinion about what you transmit
- Tasks never panic: all errors reported to host or logged
- Board abstraction: one `.rs` file + one Cargo feature per board