# rp2040 Temperatures

A _wip_ project to read temperatures on a rp2040 and publish readings to mqtt.

## Projects

- [cmd-cli](./cmd-cli/): Send COBS encoded commands across a serial connection.
  Used to configure the microcontroller.
- [controller](./controller/): Code running on the rp2040. Because of
  limitations in cargo, it is not part of the workspace.
- [mqtt-protocol](./mqtt-protocol/): Very simple implementation of just enough
  of MQTT to publish data. There was no MQTT crate that compiles for the rp2040.
- [serial-comm](./serial-comm/): Implementation of a (too) simple serial
  protocol, leveraging
  [COBS](https://en.wikipedia.org/wiki/Consistent_Overhead_Byte_Stuffing).

Take a look at the controller subproject to run stuff.