cc1101-embassy

An async Embassy driver for the CC1101 sub-1 GHz RF transceiver, targeting [embedded-hal] 1.0 and [embedded-hal-async] 1.0.

Features

• Async-first design using embedded-hal-async's Wait trait for GDO pin interrupts
• Human-readable RadioConfig builder — no raw register values required
• Hardware CRC, variable or fixed packet length, RSSI/LQI status appending
• Optional defmt logging behind the defmt feature flag
• no_std, no heap allocation, works on stable Rust

Quick start

let config = RadioConfig::new()
    .frequency_hz(433_920_000)
    .baud_rate(38_400)
    .modulation(Modulation::Gfsk)
    .tx_power(TxPower::Dbm0);

let mut radio = Cc1101::new(spi, gdo0, gdo2).await?;
radio.configure(&config).await?;

// Transmit
radio.transmit(b"hello").await?;

// Receive
let mut buf = [0u8; 64];
let packet = radio.receive(&mut buf).await?;
defmt::info!("rssi: {} lqi: {}", packet.rssi_dbm, packet.lqi);

Wiring (CC1101 SPI)