// Sketch for testing switch between loops for LED patterns

int buzzerPin = 9;
int pinSwitch = 2;

unsigned long lastMilli = 0;
int intervalDelay = 500;
byte mode = 0;

unsigned long lastCheck = 0;
int intervalDebounce = 50;

void setup()
{
  pinMode(9, OUTPUT);
  pinMode(pinSwitch, INPUT_PULLUP);
  // initialize serial communication:
  Serial.begin(9600);
}

void loop()
{

  if (millis() - lastCheck >= intervalDebounce) {
    lastCheck = millis();
    if (digitalRead(pinSwitch) == HIGH) {
      if (mode != 1) {
        Serial.println("Mode 1");
        mode = 1;
      }
      intervalDelay = 500;
    }
    else {
      if (mode != 2) {
        Serial.println("Mode 2");
        mode = 2;
      }
    }
  }

  switch (mode) {
    case 1: loop1(); break;
    case 2: loop2(); break;
  }

}

// primer loop
void loop1() {

  if (millis() - lastMilli >= intervalDelay) {
    lastMilli = millis();
    digitalWrite(9, !digitalRead(9));
  }
}

//effector loop
void loop2() {
  if (millis() - lastMilli >= intervalDelay) {
    lastMilli = millis();
    if (!digitalRead(9)) intervalDelay = 1000; else intervalDelay = 500;
    digitalWrite(9, !digitalRead(9));
  }
}