那位帮看看这段程序有什么问题吗？读取74LS165的程序

只看该作者 · 2012-6-27 20:02

/****************************************************
PC3Á¬½ÓSH/LD--STOR£¬PC2Á¬½ÓCLK--CLK,PC4Á¬½ÓQH--DATA£¬
************************************************/
#include <iom128v.h>
#include <macros.h>
#include "config.h"
#define uchar    unsigned char
#define uint    unsigned int
#define nop  NOP()
#define SET_LOAD          PORTC |= (1<<;PC3)
#define CLR_LOAD          PORTC &= ~(1<<;PC3)
#define SET_CLK    PORTC |= (1<<;PC2)
#define CLR_CLK    PORTC &= ~(1<<;PC2)
#define Ls165_data PINC & (1 << PINC4)
#define CLR_EAST_EN PORTB &= ~(1 << PB0)
#define SET_EAST_EN PORTB |= (1 << PB0)
uchar read_ls165[2];
//===============================================
void Read_LS165(void)
{
      uchar j,i,key_code;
      PORTC = 0x0c;
DDRC=0x0c;
      //DDRC |= (1<<SH_LD) | (1<<CLK); //PD0,PD1 OUTPUT ,PD2 INPUT
while(1)
{
         CLR_LOAD;
   delay_ms(10);
         SET_LOAD ;
         CLR_EAST_EN;
   delay_ms(1);
               for(j=0;j<2;j++)
               {
                  for(i=0;i<8;i++)
                  {
                     read_ls165[j]<<=1;
   if(Ls165_data)
                     read_ls165[j] |=Ls165_data;
                     CLR_CLK;
                     delay_ms(1);
                     SET_CLK;
                  }
               }
               CLR_CLK;
   delay_ms(1);
               SET_CLK;
         SET_EAST_EN;
}
}