chirpmunk-rs — a Rust LoRa PHY transceiver and wideband scanner built on FutureSDR, paired with a CBOR/UDP control plane compatible with chirpmunk-gr4.

Status: research prototype. APIs, configuration, and on-wire formats change without notice. Not production-ready.

• Rust toolchain (MSRV 1.89, edition 2024)
• SDR:
  • UHD via SoapySDR (soapy_driver=uhd) — B200 / B210 (other UHD devices untested)
  • IIO via libiio (under development)

# Build everything
cargo build --workspace

# Run tests
cargo test  --workspace

# Lint
cargo clippy --workspace --all-targets -- -D warnings

Binaries land in target/debug/. Configuration is via TOML (see apps/chirpmunk-trx/config.example.toml). Default UDP ports:

Start (each in its own shell):

# data-plane core (start before producers) — from chirpmunk-gr4
lora core --config apps/config.toml

# Rust transceiver (hardware)
./target/debug/chirpmunk-trx --config apps/chirpmunk-trx/config.example.toml

# Loopback (no hardware)
./target/debug/chirpmunk-trx --loopback --bind 127.0.0.1:5556

The DSP pipeline draws on the EPFL TCL reference implementation (gr-lora_sdr, GPL-3.0), adapted for FutureSDR's Rust block model. The CBOR/UDP control plane is a shared design with chirpmunk-gr4, authored alongside it.

Is currently lacking. Work in progress. Please stay tuned!

GPL-3.0-only — SPDX identifier GPL-3.0-only. Copyright © 2025–2026 Tom Hensel <code@jitter.eu>.