Wire-incompatible break with the 0.x protocol. Every host-side path (UART, USB CDC, framing, radio dispatcher, display update channel) speaks the v2 wire format defined in PROTOCOL.md.
* Replace the host framing path with streaming FrameDecoder + encode_frame from donglora-protocol, matching the new (type_id, tag, payload) shape.
* Update src/channel.rs and src/host/{uart,usb,framing}.rs for the new frame semantics: per-request tag echo, CRC checked in the decoder, async ERR fan-out on tag 0.
* Rework src/radio.rs to emit RX / TX_DONE / OK / ERR messages in v2 shape, including RxOrigin, TxDonePayload, and SetConfigResult codes.
* Update src/protocol.rs glue to re-export v2 types from donglora-protocol and drop the legacy 0.x shim surface.
* Refresh PROTOCOL.md to the v2 normative spec (kept in sync with the donglora-protocol crate).
* Minor display and main-loop cleanups needed for the new radio event shape.
Finishes the hsmc migration that was staged across the prior two
commits:
- Radio task is now a single `machine.run().await`; all I/O lives in
state-scoped `during:` activities (`next_command`, `next_packet`,
`perform_tx`). The old `push/drain` helpers, the imperative
top-level `select`, `handle_cmd`, `handle_rx_result`, and
`execute_transmit` are gone. `StartingRx` / `ResumingRx` intermediate
states model the host-visible difference between a responding and a
silent RX re-arm.
- Host/USB task is now an hsmc statechart (Disconnected/Connected)
with entry/exit actions handling display wake, radio StopRx, and
display reset — replacing the open-coded `was_connected` edge
detector. The `protocol_loop` keeps its imperative read path because
`read_packet` blocks.
- New `debug-checkpoint` cargo feature ships a dedicated
`debug_blink.rs` task and a shared atomic counter that code along
the boot/dispatch/TX path bumps at notable points. A ladder-latching
write policy preserves the deepest TX phase reached on the first
attempt until reboot — diagnostic output for UART-only boards where
defmt would corrupt the host protocol. Zero footprint when the
feature is off.
- Silence a stray `clippy::unit_arg` on `led_off` / `led_blip` in the
display task for boards with `LedDriver = ()`.
Replaces the ad-hoc display loop with a declarative hsmc statechart
(Off/On.{Splash.{LearnMore,Info}, Dashboard.{Listening,Transmitting}})
and swaps the Radio→Display channel from a RadioStatus watch to a
typed RadioEvent queue. The radio task now emits discrete mode and
packet events instead of publishing full status snapshots; the
display consumes them through the statechart, which also handles the
5 s splash alternation and 1 s sparkline tick via `on(after …)` /
`on(every …)` transitions.
Also:
- Add hsmc dep and embassy/tokio feature shims (hsmc proc macro
evaluates `cfg(feature = "embassy")` in this crate).
- Fix USB disconnect path in `host/usb.rs` so the DTR branch always
runs on read error (was early-continuing, starving display/radio
reset).
ESP32-S3 + SX1262 + 1.3" SH1106 OLED + CP2102 UART bridge +
1000 mAh Li-Po. Pin map verified against Meshtastic's
variants/esp32s3/ELECROW-ThinkNode-M2. DIO3 TCXO at 3.3 V (vs 1.8 V
on Heltec), VEXT_ENABLE active HIGH (opposite polarity), dedicated
LORA_POWER_EN on GPIO48 sequenced before SPI init. Reuses the
existing async SH1106 driver at I2C address 0x3C.
Refactors hal::esp32s3::{init_spi,init_i2c} and board::esp32s3::init_radio
to accept generic GPIO bounds so ESP32-S3 boards with different pin
assignments can share the helpers. init_radio now takes a
TcxoCtrlVoltage parameter instead of hardcoding Ctrl1V8.
Incidental cleanups needed to make `just check-all` green:
- Replace the core::mem::forget(output) pattern with let _foo = ...;
current esp-hal makes Output non-Drop, so forget is a no-op that
trips clippy's forget_non_drop lint.
- Switch justfile xtensa builds from `cargo +nightly` with a RUSTC
override to `cargo +esp` so the compiler and rust-src versions stay
aligned. Public nightly's rust-src had drifted two months ahead of
the esp fork and broke -Zbuild-std on core.
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.
First RP2040 board and third MCU family (after ESP32-S3 and nRF52840).
Hardware: RP2040 + SX1262 radio, 850-930 MHz HF, PE4259 antenna switch,
LED on GPIO25, no OLED, USB-C via FPC ribbon cable to adapter board.
New files:
- src/hal/rp2040.rs: MCU primitives (SPI bus, USB driver, flash unique ID MAC)
- src/board/waveshare_rp2040_lora.rs: board implementation
- ld/rp2040-memory.x: linker memory layout
Also fixes cortex-m-rt/set-vtor (moved from global dep to per-board feature,
since Cortex-M0+ has no VTOR register) and makes build.rs memory.x selection
target-aware.
- Added RgbLed trait with impl on () for boards without LED
- Added WS2812 driver (driver/ws2812.rs) using ESP32-S3 RMT peripheral
- 80MHz clock, 12.5ns resolution, 24-bit GRB encoding
- Zero extra crate dependencies
- Heltec V3/V3-UART/V4: WS2812B on GPIO38 via RMT channel 0
- RAK WisBlock/Wio Tracker: type LedDriver = (), led = None (no-op)
- Display task: green blink on RX packet, red blink on TX packet
- LED auto-off on timer tick (~1s), off when display is off/reset
- LoRaBoard trait gains type LedDriver: RgbLed associated type
- BoardParts gains led: Option<L> field
The default heltec_v3 feature now uses native USB OTG (same as V4),
appearing as /dev/ttyACM0 with the DongLoRa VID:PID (1209:5741).
This requires a hardware mod: solder R29/R3 and disconnect the CP2102
from the USB data lines.
Stock (unmodified) V3 boards should use the new heltec_v3_uart feature
which preserves the original UART-over-CP2102 behavior (/dev/ttyUSB0).
- heltec_v3: switched from UART to USB OTG
- heltec_v3_uart: new feature, UART fallback for stock boards
- Removed #[cfg] gates on UsbParts/UartParts (both always defined)
- Updated README with hardware mod instructions and board table
- Updated justfile with heltec_v3_uart board definition
- LoRaBoard trait now has associated types: RadioParts, CommParts, DisplayParts, DisplayDriver
- into_parts() is on the trait (enforced by compiler, not implicit convention)
- BoardParts<R, C, D> struct replaces tuple return from into_parts()
- mac_address() stays on trait, MAC also in BoardParts for convenience
- Removed mac field from DisplayParts (display task calls Board::mac_address())
- DisplayDriver associated type requires DrawTarget<Color = BinaryColor>
- Created host/ module with internal cfg dispatch (USB vs UART)
- Moved usb/task.rs → host/usb.rs, uart/task.rs → host/uart.rs
- Moved protocol_io.rs → host/framing.rs
- Renamed usb_task/uart_task to host_task (uniform name)
- Removed all host-comm cfg from main.rs
- The run() function now has ZERO board-specific conditional compilation
- Deleted old usb/, uart/, protocol_io.rs modules
- Created hal/esp32s3.rs with MCU primitives (SPI, I2C, USB, UART, timer, MAC)
- Created hal/nrf52840.rs with shared nRF boilerplate (interrupts, bus wrapping, VBUS, MAC)
- Moved SH1106 OLED driver from display/ to driver/ (clear separation from app code)
- Board esp32s3.rs now delegates MCU init to hal, keeps only peripheral wiring (RadioParts)
- nRF board files use hal for shared StaticCell patterns, mac_address, interrupt bindings
- Board files still own pin assignments and peripheral construction
- Made protocol_io.rs compile for all boards (not just heltec_v3)
- Renamed FrameAccumulator → CobsDecoder, encode_response → cobs_encode_response
- Refactored USB task to use shared CobsDecoder and route_command from protocol_io
- Removed ~80 lines of duplicated COBS framing and command routing from usb/task.rs
- Single canonical MAX_FRAME definition in protocol_io.rs
swaits