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

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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 (12 months ago)
Default Branch: main
Last Pushed: 2024-02-15T12:28:44.000Z (5 months ago)
Last Synced: 2024-02-24T22:38:32.870Z (4 months ago)
Language: Rust
Size: 53.7 KB
Stars: 13
Watchers: 2
Forks: 2
Open Issues: 3
Metadata Files:
- Readme: README.md
- License: LICENSE-APACHE

Lists

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.