//Parameters
const int micPin = 2;
unsigned long timeNow;
unsigned long timeBefore;

//Variables
int micVal  = 0;

void setup() {
  //Init Serial USB
  Serial.begin(115200);
  Serial1.begin(115200);
  Serial.println(F("Initialize System"));
  //Init Microphone
  pinMode(micPin, INPUT);
}

void loop() {
  readMicrophone();
}

void readMicrophone( ) { /* function readMicrophone */
  ////Test routine for Microphone
  micVal = analogRead(micPin);
  Serial.print(F("mic val ")); Serial.println(micVal);
  int count = 0;
  if (micVal > 400) {
    timeBefore = timeNow;
    timeNow = millis();
    int delta = timeNow-timeBefore;
    if ((count%2) == 0 && delta > 1000) {
      Serial1.println("turn0");
    }
    if ((count%2) == 1 && delta > 1000) {
      Serial1.println("turn1");
    }
    count += 1;
  }
}