====== Compiler defines ======
To set specific compile time defines (e.g. in case of compiling a project for different architectures esp32, esp32-c3, etc.) do the following:

in the c source files include conditional statements
  #ifdef __GPIO_ESP_DEVKIT_WROOM
     .....
  #endif
  #ifdef __GPIO_ESP_C3_MINI
     .....
  #endif

In **project/main/CMakelists.txt** add at the bottom:

  add_compile_definitions( __GPIO_ESP_DEVKIT_WROOM=1)
  or
  add_compile_definitions( __GPIO_ESP_C3_MINI=1)