led.c

来自「发光二极管在单片机上的应用,C语言源码,Keil uVision3工程文件,附原」· C语言 代码 · 共 56 行

#include <reg52.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

#define cs_led XBYTE[0xC000]

void delay(uchar delay_temp);//长延时

uchar i,j;

main(void)
{
start:	cs_led=0x00;
	delay(0xff);
	cs_led=0xff;
	delay(0xff);
	cs_led=0x55;
	delay(0xff);
	cs_led=0xaa;
	delay(0xff);
	j=0x01;
	for(i=0;i<8;i++)
	{
		cs_led=~j;
		j=j<<1;
		delay(0x7f);
	}
	cs_led=0xff;
	delay(0xff);
	j=0x80;
	for(i=0;i<8;i++)
	{
		cs_led=~j;
		j=j>>1;
		delay(0x7f);
	}
	cs_led=0x00;
	goto start;	
}

void delay(uchar delay_temp)//延时子程序
{
	uchar i,j;
	for(i=0;i<delay_temp;i++)
	{
		for(j=0;j<255;j++);
	}
}