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README
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.
Core symbols most depended-on inside this repo
Shape
Languages
Rust100%
Modules by API surface
src/tiny_mqtt.rs16 symbols
src/bmp180.rs5 symbols
src/main.rs2 symbols
For agents
$ claude mcp add esp32-rust-nostd-temperature-logger \
-- python -m otcore.mcp_server <graph>