This is an example application used for exploration of embassy/embedded async Rust on esp32c3 board.
The application should exhibit the following behavior:
- Every 5 seconds a temperature is read and published to public MQTT broker.
- If user presses BOOT button, temperature is read and published.
- If specific message is published to a select topic on the said broker, temperature is read and published.
Application publishes to HiveMQ public broker under the topic temperature/1 (see src/mqtt.rs). It's also subscribed to get-temp/1 and is listening for it's me messages that trigger temperature reading (both can be changed in src/main.rs). Currently a static IP configuration is used with IP address set to 192.168.1.88/24. The IP can be set in src/netstack.rs.
- safety
- ergonomics
- no-std (no libc)
- async (composable, zero-cost high-level abstraction)
- low-power
For toolchain setup see: https://docs.esp-rs.org/no_std-training/02_2_software.html
Afterwards, navigate to anywhere from inside the project directory and run:
SSID=test PASSWORD=12345678 cargo r --release
where SSID and PASSWORD env variables are set appropriately.
Assuming you're running a Linux distribution, make sure the device is actually connected to the host computer and that it was detected (e.g., try lsusb or simply querry dmesg output). Make sure your user account has the appropriate rights to read/write to the serial port (if not you'll probably want to add your user to the appropriate group, e.g. dialout -- see file permissions to figure this out).