數(shù)碼管顯示從AT24C02中存取數(shù)據(jù)的程序問題求大佬幫助

ID:884325 · 發(fā)表于 2021-3-2 17:19

本帖最后由千年約定于 2021-3-2 20:35 編輯

就用一個(gè)地址存秒鐘就沒問題用兩個(gè)分別存讀分鐘和秒鐘就只能存進(jìn)去一個(gè)
求大佬幫助。

單片機(jī)源程序如下:
#include "reg52.h"                      //此文件中定義了單片機(jī)的一些特殊功能寄存器
#include "i2c.h"

#define key_S 15
#define key_L key_S*33
#define key_I key_S*25

sbit k1=P3^0;
sbit k2=P3^1;
sbit k4=P3^3;
sbit k8=P3^7;
bit flag=0;
bit flash=0;
char sec=0,min=0;
unsigned char sec_s=0,min_s=0;
unsigned int Cnt10ms=0;
unsigned char num=0;
unsigned char shu=0;
unsigned char KeyValue=0;
unsigned char DisplayData[8];
unsigned char code dongtai[]={
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

void delay(unsigned int i)
{
      while(--i);
}

void Timer0Init()
{
      TMOD |= 0x01;
      TH0 = 0xD8;
      TL0 = 0xF0;
      TF0 = 0;
      TR0 = 1;
      ET0=1;
      EA=1;
}

void keyscan()
{
      static unsigned int time=0;
      if(!k1||!k2||!k4||!k8)
      {
            time++;
            if(time>key_L)
                     time=key_I;

            if(time==key_S)
            {
                     if(!k1 && KeyValue==0)
                     {
                              if(shu>=0)
                              {
                                    flag=1;

                              //       min_s=At24c02Read(1);
                                    sec_s= At24c02Read(2);
                                    min=min_s;
                                    sec=sec_s;
                              }
                     }
                     if(k2!=0xFF)
                        delay(30000);
                        if(k2!=0xFF)
                              KeyValue=++KeyValue%4;
            }
            if(time==key_S||time==key_L)
            {
                     if(!k4 && KeyValue>0)
                     {
                              switch(KeyValue)
                              {
                                    case 3: if(shu<99)shu++; break;
                                    case 1: if(min_s<99)min_s++; break;
                                    case 2: if(sec_s<59)sec_s++; break;
                              }


                     }
                     if(!k8 && KeyValue>0)
                     {
                              switch(KeyValue)
                              {
                                    case 3: if(shu>0)shu--; break;
                                    case 1: if(min_s>0)min_s--; break;
                                    case 2: if(sec_s>0)sec_s--; break;
                              }
                     }

                     //       At24c02Write(1,min_s);
                              At24c02Write(2,sec_s);

            }
      }
      else time=0;
}

void BufferMemory()
{
      if(KeyValue==0)
      {


            DisplayData[0]=dongtai[shu/10];
            DisplayData[1]=dongtai[shu%10];
            DisplayData[4]=dongtai[min/10];
            DisplayData[5]=dongtai[min%10]+0x80;
            DisplayData[6]=dongtai[sec/10];
            DisplayData[7]=dongtai[sec%10];
      }
      else
      {
            if(KeyValue==3&&flash==1)
            {
                     DisplayData[0]=0;
                     DisplayData[1]=0;
            }
            else
            {
                     DisplayData[0]=dongtai[shu/10];
                     DisplayData[1]=dongtai[shu%10];
            }
            if(KeyValue==1&&flash==1)
            {
                     DisplayData[4]=0;
                     DisplayData[5]=0x80;
            }
            else
            {
                     DisplayData[4]=dongtai[min_s/10];
                     DisplayData[5]=dongtai[min_s%10]+0x80;
            }
            if(KeyValue==2&&flash==1)
            {
                     DisplayData[6]=0;
                     DisplayData[7]=0;
            }
            else
            {
                     DisplayData[6]=dongtai[sec_s/10];
                     DisplayData[7]=dongtai[sec_s%10];
            }
      }
}

void display()
{
      static unsigned char t=0;
      P0=0x00;
      P2&=0xe3;
      P2|=(t<<2);
      P0=DisplayData[t];
      t=++t%8;
}

void  main()
{
      Timer0Init();
      DisplayData[2]=0x80;
      DisplayData[3]=0x80;

      while(1)
      {

            keyscan();

            BufferMemory();
            display();
            delay(125);
      }
}

void Timer0() interrupt 1
{
      TH0 = 0xD8;
      TL0 = 0xF0;
      if(flag)
      {
            if(min|sec!=0)
            {
                     Cnt10ms++;
                     if(Cnt10ms>=100)
                     {
                              Cnt10ms=0;
                              sec--;
                              if(min==0&&sec==0)
                              {
                                    flag=0;
                                    shu++;
                                    if(shu>=9)
                                    shu=1;
                              }
                              else if(sec<0)
                              {
                                    min--;
                                    sec=59;
                              }
                     }
            }
            else flag=0;
      }
      if(++num==20)
      {
            num=0;
            flash=~flash;
      }

}