Reference

Building from source

1. Install VS Code and the PlatformIO IDE extension.
2. Clone the repository and open the folder. PlatformIO installs the ESP8266 toolchain and libraries the first time you open it.
3. Set upload_port in platformio.ini to your controller's port.
4. Build with pio run, or build and flash with pio run -t upload. Unit tests run on your computer with pio test -e native.