/* Definição dos Pinos */
const byte led_red = 4;
const byte led_green = 2;
const byte led_blue = 15;
const byte bt_green = 25;
const byte bt_blue = 13;

/* Funções */
void blinkLED(byte pin, int time) {
  static bool flag = 0;
  flag = !flag;
  digitalWrite(pin, flag);
  delay(time);
}

void controlLED(byte button,  byte led) {
  bool state_bt = digitalRead(button);
  digitalWrite(led, !state_bt);
}

void toggleLED(byte button, byte led) {
  static bool st_old = HIGH;
  static bool flag = 0;
  byte state_bt = digitalRead(button);

  if(!state_bt && st_old) {
    flag = !flag;
    digitalWrite(led, flag);
  }

  st_old = state_bt;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(led_red, OUTPUT);
  pinMode(led_green, OUTPUT);
  pinMode(led_blue, OUTPUT);
  pinMode(led_red, OUTPUT);
  pinMode(bt_green, INPUT_PULLUP);
  pinMode(bt_blue, INPUT_PULLUP);
}

void loop() {
  blinkLED(led_red, 200);
  controlLED(bt_green, led_green);
  toggleLED(bt_blue, led_blue);
  delay(10);
}