hc595b.c.bak

51开发板源程序,74HC595驱动显示程序.在该模块中

#include <reg52.h>
#include <absacc.h>
#include <intrins.h>

sbit stb595 = P0^1;      /*定义RD5为595寄存器锁定信号驱动*/
sbit clock595=P0^0;      /*定义RD6为595移位寄存器信号驱动*/
sbit data595=P0^2;      /*定义RD7为595数据传输位信号驱动*/

void delay10(unsigned char);


       bit           normal; /*AC normal*/
bank1       bit           buck; /*AC buck*/
bank1       bit           boost; /*AC boost */
bank1       bit           datalow3;
bank1       bit           inverter; /*inverter*/
bank1       bit           datalow5;
bank1       bit           overload; 
bank1       bit           replace; 

bank1       bit           battery25; 
bank1       bit           battery50; 
bank1       bit           battery75; 
bank1       bit           battery100; 
bank1       bit           load20; 
bank1       bit           load40; 
bank1       bit           load60; 
bank1       bit           load80;

void delay10(unsigned char dd)  /*主程序调用的延时程序*/
    {
    unsigned char ff;
    for (ff=dd;ff!=0;ff--)
        {
        continue;
        }
    }

void display595(void)   /*显示LED处理程序*/
    {
    unsigned char tempcount;
    stb595=0;         /*准备锁存 */
    data595=0;
    clock595=0;
    delay10(15);  
    for (tempcount=16;tempcount!=0;tempcount--)
        {
        switch (tempcount)  /*送数据 */
               {
               case 16:
                    data595=load80;
                    break;
               case 15:
                    data595=load60;
                    break;
               case 14:
                    data595=load40;
                    break;
               case 13:
                    data595=load20;
                    break;
               case 12:
                    data595=battery100;
                    break;
               case 11:
                    data595=battery75;
                    break;
               case 10:
                    data595=battery50;
                    break;
               case 9:
                    data595=battery25;
                    break;
               case 8:
                    data595=replace;
                    break;
               case 7:
                    data595=overload;
                    break;
               case 6:
                    data595=datalow5;
                    break;
               case 5:
                    data595=inverter;
                    break;
               case 4:
                    data595=datalow3;
                    break;
               case 3:
                    data595=boost;
                    break;
               case 2:
                    data595=buck;
                    break;
               case 1:
                    data595=normal;
                    break;
               }
        delay10(15);
        clock595=1;       /*时钟上半周期,开始移位 */
        delay10(15);
        clock595=0;       /*时钟下半周期 */
        delay10(15);
        }
    delay10(15);
    stb595=1;          /*开始锁存 */
    delay10(15);
    stb595=0;
    data595=0;
    clock595=0;
    }