sketch_3_4_ardu

//***************************************************************************************
//  EE40LX
//  Sketch 3.4 adapted to Arduino
//
//***************************************************************************************

int BUZZER = 8; // set BUZZER as P1.3 alias
int val;

void setup()
{
  // set BUZZER as output pin
  pinMode(BUZZER, OUTPUT);

  // random analog voltage noise at analog pin 0 will seed
  // the random number generator differently every time it runs
  // otherwise, we will hear the same pseudo-random sequence
  // every time we run the program (which is at times useful)
  randomSeed(analogRead(0));
}

void loop()
{
  val = random(1,100);      // create a random number from 1 to 100 using the Energia RNG
  if (val > 50)             // if val is greater than 50, output an 800 Hz wave
    tone(BUZZER, 800, 50);  // otherwise, do nothing for the same period
  else
    delay(50);
}
/* End of code */