blinktone.ino

/*
  BlinkTone
  
  Modified from Arduino Blink Example
  
  Once you've changed the frequency for blinking an LED, drop a speaker in instead.
  Modify the delay to hear different tones. Then, write a function to make it easier to call for different tones.
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(13, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

//void tone(float freq){
//  digitalWrite(9, HIGH);   // turn the LED on (HIGH is the voltage level)
//  delayMicroseconds(1000000 / freq / 2);                       // wait for a second
//  digitalWrite(9, LOW);    // turn the LED off by making the voltage LOW
//  delayMicroseconds(1000000 / freq / 2); 
//}