#define entrada0 0
#define entrada1 2

volatile bool D0_pressed = false;
volatile bool D1_pressed = false;

void IRAM_ATTR interruptD0(){
  if(digitalRead(entrada1) == HIGH){
      D0_pressed = !D0_pressed;   
  }
}
void IRAM_ATTR interruptD1(){
  if(digitalRead(entrada0) == HIGH){
      D1_pressed = !D1_pressed;   
  }
}

void setup() {

Serial.begin(115200);

pinMode(entrada0, INPUT_PULLUP);
pinMode(entrada1, INPUT_PULLUP);

attachInterrupt(digitalPinToInterrupt(entrada0), interruptD0, CHANGE);
attachInterrupt(digitalPinToInterrupt(entrada1), interruptD1, CHANGE);


}

void loop() {

if (D0_pressed == true) {
    for (int dutycycle = 0; dutycycle <= 255; dutycycle++) {
        Serial.printf("Subiendo Persiana: %d %%\n", dutycycle); 
        if(dutycycle == 255){
          Serial.println("Persiana Subida");
        }
        else if (D0_pressed == false) {
            break;
        }
    }
}
 
if (D1_pressed == true) {
    for (int dutycycle = 255; dutycycle >= 0; dutycycle--) {
        Serial.printf("Bajando Persiana: %d %%\n", dutycycle);  
        if (D1_pressed == false) {
            break;
        }
        else if(dutycycle == 0){
            Serial.println("Persiana Bajada");
        }
    }
}
}