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Coding Guidelines


The platformio.ini is the main project configuration file. It configures PlatformIO to build and flash the ESP32


PlatformIO supports the option extra_configs, which allows to include additional configurations. Our platformio.ini is preconfigured a custion configuraion inthe file custom_config.ini. An example custion configuration file can be found in the root folder of the firmware.

Developer mode

To enable the developer mode, uncomment the following line in the custom_config.ini and flash the firmware:

; build_flags = -D DEVELOP

The developer mode enables additional dvelopment options menu in the configuration web interface, where it’s possible to configure:

  • whether the grid on the display is shown (useful for text debugging)
  • whether the WLAN password should be printed to the serial interface (useful for WLAN debugging)