The Arduino IDE is easy to use. But I faced problems like maintainability and testability at more complicated IoT projects. I needed to compile and flash the ESP32 before testing my code functionality by doing it 100% manually.

This solution transpiles Golang into Arduino code, which can be compiled to an image by using the ESP32 toolchain. Now I am able to use a fully automated testing approach instead of doing it 100% manually.

Important:

The Transpiler only supports a small subset of the Golang Language Specification. Look at the mapping and the tests to get the current functionality. It is also not possible to trigger the C/C++ Garbage Collection, because Golang handles it automatically "under the hood". Go strings will be transpiled to C constant char arrays, which could be handled on the stack.

go get -u github.com/andygeiss/esp32-transpiler

Usage of esp32-transpiler:
  -source string
        Golang source file
  -target string
        Arduino sketch file