#define R D4
#define G D1
#define B D0
#define CATHODE D3

#define R_PWM 0
#define G_PWM 1
#define B_PWM 2

void led_setup()
{
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(CATHODE, OUTPUT);

  ledcSetup(R_PWM, 200, 8);
  ledcSetup(G_PWM, 200, 8);
  ledcSetup(B_PWM, 200, 8);
  ledcAttachPin(R, R_PWM);
  ledcAttachPin(G, G_PWM);
  ledcAttachPin(B, B_PWM);
}

void changeLED(int r, int g, int b)
{
  ledcWrite(R_PWM, 256 - r / 2);
  ledcWrite(G_PWM, 256 - (g) / 1.5);
  ledcWrite(B_PWM, 256 - b);
}