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

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

Last synced: 5 days ago
JSON representation

• Host: GitHub
• URL: https://github.com/JurajSadel/esp32c3-no-std-async-mqtt-demo
• Owner: JurajSadel
• License: apache-2.0
• Created: 2023-07-20T09:40:24.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-02-15T12:28:44.000Z (9 months ago)
• Last Synced: 2024-08-02T20:44:29.938Z (3 months ago)
• Language: Rust
• Size: 53.7 KB
• Stars: 23
• Watchers: 2
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHE

Awesome Lists containing this project

• awesome-esp-rust - esp32c3-no-std-async-mqtt-demo - ESP32-C3 application that measures temperature (using BMP180) and sends the results with MQTT via WiFi - everything is done asynchronously. Also available for [ESP32](https://github.com/JurajSadel/esp32-no-std-async-mqtt-demo) and [ESP32-S3](https://github.com/JurajSadel/esp32s3-no-std-async-mqtt-demo) (Projects / `no_std`)

README

        
# esp32c3-no-std-async-mqtt-demo

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

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

ESP32S3 variant: https://github.com/JurajSadel/esp32s3-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](https://crates.io/crates/esp32c3-hal), [esp-wifi](https://github.com/esp-rs/esp-wifi/tree/main), and [rust-mqtt](https://crates.io/crates/rust-mqtt) crates. The main skeleton is made of [embassy_dhcp](https://github.com/esp-rs/esp-wifi/blob/68dc11bbb2c0efa29c4acbbf134d6f142441065e/examples-esp32c3/examples/embassy_dhcp.rs) and [no_std_temperature_logger](https://github.com/bjoernQ/esp32-rust-nostd-temperature-logger) with a bunch of changes.

The first change is `MQTT` part added. We are using `MQTTv5`. As a broker, we use[public-mqtt-broker](https://www.hivemq.com/public-mqtt-broker/) and [websocket-client](https://www.hivemq.com/demos/websocket-client/) to see the results.

As a next change, we had to make [bmp180.rs](https://github.com/bjoernQ/esp32-rust-nostd-temperature-logger/blob/main/src/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](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)

- MIT license ([LICENSE-MIT](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.