display.c

我同事做的一个CS5522的51单片机的驱动,用的是89S52,开发环境是KEIL C

#include<reg52.h>
#include<stdio.h>
//*****************************************************
#define DisPort    P0
//#define Str        1
//#define Data       2
//#define Clo        3
//*****************************************************
unsigned char code  DisTab[11]={0x3f,0x6,0x5b,0x4f,0x66,0x6d,0x7d,0x7,0x7f,0x6f,0x40};
extern unsigned char bdata  main_temp;    //全局缓冲变量
extern bit main_temp_7;
//***************************************************************
//**********************************
extern unsigned char   t_d[8];    //需要显示的每位数。 
//**************************************************************
//bit   Str;
//bit   Data;
//bit   Clo;
sbit  Str=P3^7;
sbit  Data=P3^6;
sbit  Clo=P3^5; 


//显示子程序
void display(unsigned char  SubDisNum)  //用SPI线显示一个0-9的数字。DisNum最高位表示小数点 
{     
   unsigned char data  DisTemp=8;   
   bit DisBTemp;
   main_temp=SubDisNum;
   DisBTemp=main_temp_7; 
   main_temp_7=0;
   main_temp=DisTab[main_temp];  
   main_temp_7=DisBTemp;
   main_temp=~main_temp;
   Str=1;
   while(DisTemp)
      {  
          Clo=0;
          Data=main_temp_7;
			 Clo=1;
			 main_temp=main_temp<<1;
			 DisTemp--;       


       } 
   Str=0;


}
//****************************************
void eight_dis(void)   //连续显示八位数，
        {
            display(10);
			display(10);
			display(10);
			display(t_d[0]);
		    display(t_d[1]);
			display(t_d[2]);
			display(t_d[3]);
			display(t_d[4]);
            display(t_d[5]);
			display(t_d[6]);
			display(t_d[7]);
			display(10);
 		


           

         }