#define PIN_BUZZER 5 
#define PIN_BUTTON 4

void setup () {
pinMode (PIN_BUTTON,INPUT);
pinMode (PIN_BUZZER, OUTPUT);
Serial.begin(115200);
}
void loop () {
  if (digitalRead(PIN_BUTTON)== LOW)
  {
    alert();
  }
  else
  {
    analogWrite(PIN_BUZZER, 0);
  }
}

void alert()
{
  float sinVal;
  int toneVal;
  for (int x = 0; x < 360; x++)
{
  sinVal =sin(x *(PI/180));
  toneVal = 500 + sinVal * 500;
  tone(PIN_BUZZER,toneVal);
  delay (10);
  noTone (PIN_BUZZER);
  delay(1);
  Serial.printf("Running %d \n",toneVal);
}
}