Decentralized Automation Networks - ESP32 Output Node

This is Rust-based firmware for the ESP32 micro-controller that implements a physical output node of an automation network. It will toggle an LED connected to GPIO12 whenever it receives a message via UDP, in addition to logging it to the serial console. The output node accepts control commands on a specific UDP port. Right now this is used to receive incoming messages and to respond to UDP pings.

Usage

1. Build the firmware

   cargo build

2. Connect the ESP32 via USB/UART and flash the built firmware binary:

   espflash flash -p <port> .\target\xtensa-esp32-espidf\debug\esp-output-node --monitor

   <port> needs to be replaced with the serial interface where the ESP is connected, e.g. COM3 on Windows. Slashes also need to be adapted to the OS.
   The path to the binary also has to be updated to point to the correct version of the binary. If the firmware is built in release mode, the path needs to contain release instead of debug.
3. Pull down GPIO12 to send out a UDP message to the specified target node.

The ESP32 might restart a few times if it doesn't manage to connect to WiFi right away. If the credentials are correct, it should connect after two or three reboots.

Setting Things Up

1. Install Rust using the following guide: https://esp-rs.github.io/book/installation/index.html
2. Try to build one of the sample repos, i.e. https://github.com/ivmarkov/rust-esp32-std-demo
   Be careful with directory names. It seems like long names will cause errors during the build!
3. Clone this repo:

   git clone https://github.com/Chaphasilor/decentralized-automation-networks_esp32-output-node` esp-output-node

4. Set up the config file (cfg.toml):
   You can use the provided demo config for this
5. Build the project:

   cd esp-output-node
   cargo build