isd1420.c

一个实用的单片机试验程序

#include<reg51.h>
#include"ISD1420.h"


//短延时函数：nNop()
void nNop(uint i)
{
	for(;i>0;i--) ;
	}
	
//长延时函数：LongDelay()
void LongDelay(uint i)
{
	uint j;
	for(;i>0;i--)
		{ for(j=1000;j>0;j--);}
	}

//指定段播放函数：Sound_Play()
void Sound_Play(uchar Addr)
{
	PLAYL = 1;
	ISD_Addr = (Addr<<2) & 0x3c;
	LongDelay(50);
	PLAYL = 0;
	LongDelay(600);
	PLAYL = 1;
 }