manio/esp32-rust-nostd-temperature-logger

MQTT temperature logger running on ESP32 in Rust (no-std / no RTOS)

Demo of Rust on ESP32 (no RTOS) with MQTT and adafruit.io for temperature logging

About

This will read the temperature from a connected BMP180 sensor via I2C and send it via MQTT to adafruit.io every minute.

It publishes the temperature value to the topic <USERNAME>/feeds/temperature

Setting Credentials

You need to set these environment variables for a successful build.

Name	Value
SSID	SSID of your WiFi access point
PASSWORD	Your WiFi password
ADAFRUIT_IO_USERNAME	Your adafruit.io username
ADAFRUIT_IO_KEY	Your adafruit.io API key

To run the application connect your ESP32 development board with the BMP180 connected and execute cargo run --release

Make sure to have the Xtensa enabled Rust toolchain installed.

Wiring the BMP180 temperature sensor

BMP180	ESP32
SDA	IO32
SCL	IO33
GND	GND
VCC	3.3V

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.