Crate cc1101_embassy 

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)

CC1101 pin	RP2040 (example)	Notes
VCC	3.3 V	1.8–3.6 V
GND	GND
CSn	GP5	Active low chip select (managed by SpiDevice)
SCLK	GP2	SPI clock
MOSI (SI)	GP3	SPI MOSI
MISO (SO)	GP4	SPI MISO (also GDO1)
GDO0	GP6	Interrupt pin — packet RX/TX done
GDO2	GP7	Optional — sync word detect / RX threshold

Re-exports

pub use config::Modulation;

pub use config::PacketLength;

pub use config::RadioConfig;

pub use config::SyncMode;

pub use config::TxPower;

pub use error::Error;

Modules

config

High-level radio configuration for the CC1101.

error

Error types for the CC1101 driver.

Structs

Cc1101

Async CC1101 driver.

ReceivedPacket

A received packet, returned by Cc1101::receive.