// Audio alert example using PWM
// Connections: Output connected between pin 26 and ground
 
#define LEDC_PIN 6         //  Define output pin for speaker with 220ohm resistor
#define LEDC_RESOLUTION 10  // Set resolution to 10 bits
 
void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S3!");
 
}
 
void loop() {
 
  // 100Hz tone for 1 second
  ledcAttach(LEDC_PIN, 50, LEDC_RESOLUTION); // Attach pin before starting tone
  ledcWriteTone(LEDC_PIN, 100);
  delay(1000);    
  ledcDetach(LEDC_PIN); // Detatch pin to stop the tone
  
  delay(2000); // Delay before starting the next example
  
  // 1000Hz tone for 1 second
  ledcAttach(LEDC_PIN, 50, LEDC_RESOLUTION); // Attach pin before starting tone
  ledcWriteTone(LEDC_PIN, 1000);
  delay(1000);    
  ledcDetach(LEDC_PIN); // Detatch pin to stop the tone
  
  delay(2000); // Delay before starting the next example
 
  // Short rising tone (100 to 2000Hz for 200ms)
  ledcAttach(LEDC_PIN, 50, LEDC_RESOLUTION); // Attach pin before starting tone
  for (int i=1; i<20; i++) {
    ledcWriteTone(LEDC_PIN, i * 100);
    delay(10);    
  }
  ledcDetach(LEDC_PIN); // Detatch pin to stop the tone
  
  delay(2000); // Delay before starting the next example
 
  // Sound alert - Short rise and fall sound effect
  ledcAttach(LEDC_PIN, 50, LEDC_RESOLUTION); // Attach pin before starting tone
  for (int i=1; i<20; i++) {
    ledcWriteTone(LEDC_PIN, i * 100);
    delay(20);    
  }
  for (int i=10; i>0; i--) {
    ledcWriteTone(LEDC_PIN, i * 100);
    delay(10);    
  }
  ledcDetach(LEDC_PIN); // Detatch pin to stop the tone
 
  delay(2000); 
 
  // Slow fall (500 to 50 Hz 1800 ms)
    ledcAttach(LEDC_PIN, 50, LEDC_RESOLUTION); // Attach pin before starting tone
    for (int i=500; i>50; i--) {
    ledcWriteTone(LEDC_PIN, i);
    delay(4);    
  }
  ledcDetach(LEDC_PIN); // Detatch pin to stop the tone
  
  delay(2000); // Delay before starting loop again
}