display.h

RS232串口C语言应用程序 基于51单片机

#include<stdio.h>
#include<absacc.h>
#include <intrins.h>
#define	IOCDAD	XBYTE[0XF901]
#define	IODTAD	XBYTE[0XF900]

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}; 
void	delay(void)
	{	unsigned	int	j;
		for(j=0;j<100;j++);
	}
void	display(unsigned char display_buffer[5])
	{
		unsigned	char	i;
		display_bit=0x7f;
		IOCDAD=00;
		for(i=0;i<5;i++)
		{
			IODTAD=led[display_buffer[i]&0x0f];
			P1=display_bit;
			delay();
			display_bit=_cror_(display_bit,1);
		}
			display_bit=0x7f;
	}