Awesome

esp32s3-no-std-async-mqtt-demo

This is a simple demo that we will use on the upcoming Espressif DevCon23.

WARN: MSRV: 1.72

ESP32 variant: https://github.com/JurajSadel/esp32-no-std-async-mqtt-demo

ESP32C3 variant: https://github.com/JurajSadel/esp32c3-no-std-async-mqtt-demo

What it does

The application measures temperature (BMP180) and sends the results to MQTT via WiFi - everything is done asynchronously.

It's async no_std application that uses esp-hal, esp-wifi, and rust-mqtt crates. The main skeleton is made of embassy_dhcp and no_std_temperature_logger with a bunch of changes.

The first change is MQTT part added. We are using MQTTv5. As a broker, we usepublic-mqtt-broker and websocket-client to see the results.

As a next change, we had to make bmp180.rs async.

Build and run

You have to set the SSID and PASSWORD environment variables before building/running the program

cargo run --release

WARN: Be sure you are using release mode!

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.