Basic tri-color LED control with hex colors.

tricolor_example.c

playColor(0x000000); // black
playColor(0xFFFFFF); // white

playColor(0xFF0000); // red
playColor(0x00FF00); // green
playColor(0x0000FF); // blue

playColor(0xFFFF00); // yellow
playColor(0x00FFFF); // cyan
playColor(0xFF00FF); // magenta


void writeColor(long color) {
  int red = (color & 0xFF0000) >> 16;
  int green = (color & 0xFF00) >> 8;
  int blue = (color & 0xFF);
  
  writeColorComponent(RED, red);
  writeColorComponent(GREEN, green);
  writeColorComponent(BLUE, blue);
}

void writeColorComponent(int color, int value) {
  if (COMMON_ANNODE) {
    value = 255 - value;
  }
  
  analogWrite(color, value);
}