Embassy Async

Embassy is an async/await framework for embedded Rust that eliminates the need for a traditional RTOS. Combining Embassy with Zenoh gives you efficient, event-driven communication with minimal footprint.

Why Embassy + Zenoh?

• Single-threaded async — no context switching overhead
• Cooperative multitasking — full control over scheduling
• Rich HAL support for ARM and RISC-V
• Native async networking (TCP via embassy-net)

Example: Async Publisher

#![no_std]
#![no_main]
 
use embassy_executor::Spawner;
use embassy_time::{Duration, Timer};
use zenoh_nostd::prelude::*;
 
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let config = Config::client("tcp/192.168.1.100:7447");
    let session = Session::open(config).await.unwrap();
 
    loop {
        session.put("sensors/temperature", b"23.5").await.unwrap();
        Timer::after(Duration::from_secs(1)).await;
    }
}

Resources

• Embassy project
• embassy-net
• esp-hal for Espressif targets