lesson6.c

AD TO DA 转换程序

#include<reg52.h>
#define uchar unsigned char
sbit csda=P3^2;
sbit wr=P3^6;
sbit dula=P2^6;
sbit wela=P2^7;
uchar dig;
void delay(uchar);
void main()
{
	dula=0;
	wela=0;
	csda=0;
	wr=0;
	//	delay(200);
	while(1)
	{
		P0=dig;
		delay(10);
		dig++;	
				
	}
}

void delay(uchar x)
{
	uchar a;
	unsigned int b;
	for(a=x;a>0;a--)
		for(b=100;b>0;b--);
}