donghee

#include "mbed.h"
// Audio output demo for speaker
// generates a 500Hz sine wave on the analog output pin
// 128 data points on one sine wave cycle are precomputed,
// scaled, stored in an array and
// continuously output to the Digital to Analog convertor
 
AnalogOut DAC(p18);
//global variables used by interrupt routine
volatile int i=0;