text: #ifndef BACKLIGHT_H
  #define BACKLIGHT_H
  
  // To call before using updateBacklightIfNecesary()
  void initBacklight();
  
  // Adjusts the backlight of the TFT screen according to a photosensor
  void updateBacklightIfNecesary();
  
  // There is an issue with the backlight PWM creating interferences with the touch data,
  // so every time the user touches the screen, we call this function to put
  // the brightness to 100% for a few minutes, and then we go back
  // to brightness adjusted to ambiant light.
  void adjustBacklightForTouch();
  
  #endif
  