display_s.h

本文件是用keil编程的

#ifndef  _display_
#define  _display_

#include <intrins.h>

sbit	SDA=P1^0;
sbit	CLK=P1^1;

unsigned	char	data	display_bit;
unsigned	char	code	led[20]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf,0x89,0x8C}; 

void	delay(unsigned int k)
	{	unsigned	int	i,j;
		for(i=0;i<k;i++)
		for(j=0;j<100;j++);
	}

void	send(unsigned char a)
{
	unsigned char i;
	for(i=0;i<8;i++)
		{
			if(_crol_(a,i)&0x80)
				SDA=1;
			else
				SDA=0;
			CLK=0;
			CLK=1;
			}
}

void	display(unsigned char display_buffer[5])
	{
		unsigned	char	i,k;
		display_bit=0x7f;
		for(i=0;i<5;i++)
		{
			k=led[display_buffer[i]];
			send(k);
			P1=display_bit;
			delay(0x01);
			P1=0xff;
			display_bit=_cror_(display_bit,1);
		}
			display_bit=0x7f;
	}
	
#endif