我要崩潰了，到底哪里出了問題？單片機編譯沒有錯誤沒有警告，但是k1,k2不知道哪個...

ID:425921 · 發(fā)表于 2018-11-30 21:40

#include "reg52.h"
#include "i2c.h"
typedef unsigned char u8;
typedef unsigned int u16;
sbit lsa=P2^2;
sbit lsb=P2^3;
sbit lsc=P2^4;

sbit k1=P3^1;
sbit k2=P3^0;
sbit k3=P3^2;
sbit k4=P3^3;
u8 code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(i)
{
      while(i--);
}
unsigned char num=100;
void Keypros()
{
         if(k1==0)
      {
               delay(1000);
               if(k1==0)
               {
                     At24c02Write(1,num);
               }
               while(!k1);
      }
      if(k2==0)
      {
               delay(1000);
               if(k2==0)
               {
                     At24c02Read(1);
               }
               while(!k2);
      }
      if(k3==0)
      {
               delay(1000);
               if(k3==0)
               {
                  num++;
                     if(num>255)
                     {
                              num=0;
                     }
               }
               while(!k3);
      }
      if(k4==0)
      {
               delay(1000);
               if(k4==0)
               {
                  num=0;
               }
               while(!k4);
      }
}
u8 disp[4];
void datapros()
{
      disp[0]=smgduan[num/1000];
      disp[1]=smgduan[num%1000/100];
      disp[2]=smgduan[num%1000%100/10];
      disp[3]=smgduan[num%1000%100%10];
}
void DigDisplay()
{
               u8 i;
               for(i=0;i<4;i++)
               {
                     switch(i)
                     {
                        case(0):lsa=0;lsb=0;lsc=0;break;
                        case(1):lsa=1;lsb=0;lsc=0;break;
                        case(2):lsa=0;lsb=1;lsc=0;break;
                        case(3):lsa=1;lsb=1;lsc=0;break;
                        }
                        P0=disp[3-i];
                        delay(100);
                        P0=0x00;
               }
}

void main()
{
   while(1)
{
      Keypros();
      datapros();
      DigDisplay();
}
}

//這是主函數(shù)頁,下面是i2c.c頁//
#include "i2c.h"
#include "reg52.h"

void delay10us() //誤差 0us
{
unsigned char a,b;
for(b=1;b>0;b--)
      for(a=2;a>0;a--);
}

void I2cStart()
{
      SDA=1;
      delay10us();
      SCL=1;
      delay10us();
      SDA=0;
      delay10us();
      SCL=0;
      delay10us();
}
void I2cStop()
{
      SDA=0;
      delay10us();
      SCL=1;
      delay10us();
      SDA=1;
      delay10us();
}
unsigned char I2cSendByte(unsigned char dat)
{
   unsigned char i,j;
      for(i=0;i<8;i++)
      {

      SDA=dat>>7;
      dat=dat<<1;
      delay10us();
      SCL=1;
      delay10us();
      SCL=0;
      delay10us();
      }
      SDA=1;
      delay10us();
      SCL=1;
      while(SDA)
      {
            j++;
            if(j>200)
               {
                     SCL=0;
                     delay10us();
                     return 0;
               }
      }
      SCL=0;
      delay10us();
      return 1;
}
unsigned char I2cReadByte()
{
      unsigned char i,dat=0;
         SDA=1;                      //起始和發(fā)送一個字節(jié)之后SCL都是0
         delay10us();
      for(i=0;i<8;i++)
      {
         SCL=1;
               delay10us();
               dat=dat<<1;
               dat|=SDA;
               delay10us();
               SCL=0;
               delay10us();
      }
      return dat;
}
void At24c02Write(unsigned char addr,unsigned char dat)
{
      I2cStart();
      I2cSendByte(0xa0);
      I2cSendByte(addr);
      I2cSendByte(dat);
      I2cStop();
}
unsigned char At24c02Read(unsigned char addr)
{
      unsigned char num;
      I2cStart();
      I2cSendByte(0xa0);
      I2cSendByte(addr);
      I2cStart();
      I2cSendByte(0xa1);
      num=I2cReadByte();
      I2cStop();
      return num;
}

//下面的頭文件頁//
#ifndef _I2C_H
#define _I2C_H

#include <reg52.h>

sbit SCL=P2^1;
sbit SDA=P2^0;

void I2cStart();
void I2cStop();
unsigned char I2cSendByte(unsigned char dat);
unsigned char I2cReadByte();
void At24c02Write(unsigned char addr,unsigned char dat);
unsigned char At24c02Read(unsigned char addr);

#endif

ID:425921 · 發(fā)表于 2018-11-30 21:42

實現(xiàn)現(xiàn)象：下載程序后數(shù)碼管后4位顯示0，按K1保存顯示的數(shù)據(jù)，按K2讀取上次保存的數(shù)據(jù)，按K3顯示數(shù)據(jù)加一，按K4顯示數(shù)據(jù)清零。問題就在于不知道K1有問題還是K2有問題，不知道是沒寫進去，還是讀不出來？？？