DS1302實時時鐘的問題，如何用4個按鍵調時呢？

ID:309880 · 發表于 2018-5-29 11:27

不好意思，我又來了，我用4個按鍵調節時鐘（考慮手上沒有與門器件沒用中斷，時間不夠了），代碼如下，可是LCD不顯示，請各位幫俺看看如何修改，問題應該出在主函數和主函數上面的子函數上了，請各位幫幫忙
#include <reg52.h>
#include <string.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit SDA=P1^0; // DS1302數據線
sbit CLK=P1^1; //DS1302時鐘線
sbit RST=P1^2;  //DS1302復位線
sbit RS=P2^0;
sbit RW=P2^1;
sbit EN=P2^2;
sbit K1=P3^4; // 選擇
sbit K2=P3^5; // 加
sbit K3=P3^6; // 減
sbit K4=P3^7; // 確定

uchar tCount=0;
//一年中每個月的天數，2月的天數由年份決定
uchar MonthsDays[]={31,31,30,31,30,31,31,30,31,30,31};
uchar *WEEK[]={"SAT","SUN","MON","TUS","WEN","THU","FRI"};
uchar LCD_DSY_BUFFER1[]={"Date 00-00-00 "}; //LCD顯示緩沖
uchar LCD_DSY_BUFFER2[]={"Time 00:00:00 "};
uchar DateTime[7]; //所讀取的日期時間
char Adjust_Index=-1;
uchar Change_Flag[]="-MHDM-Y"; //當前調節的標志:分鐘，小時，天，月，年

void DelayMS(uint x)
{
  uchar i;
  while(x--) for(i=0;i<120;i++);
}

void DS1302_Write_Byte(uchar x)    //發送一個字節到DS1302通信線上
{
   uchar i;

   for(i=0;i<8;i++) //低位在前，移位輸出
   {
      SDA=x&1;  //輸出該位數據
CLK=1;    //拉高時鐘
CLK=0;    //拉低時鐘，完成一個位的操作
x>>=1;
   }
}

uchar DS1302_Read_Byte()
{
uchar i,b,t;
for(i=0;i<8;i++)
{
b>>=1;
t=SDA;
b|=t<<7;
CLK=1;
CLK=0;
}
return b/16*10+b%16;
}

uchar Read_Data(uchar addr)
{
uchar dat;
RST=0;
CLK=0;
RST=1;
DS1302_Write_Byte(addr);
dat=DS1302_Read_Byte();
CLK=1;
RST=0;
_nop_(); //以下為DS1302復位的穩定時間,必須的。
CLK = 1;
_nop_();
SDA = 0;
_nop_();
SDA = 1;
_nop_();
return dat;
}

void Write_DS1302(uchar addr,uchar dat)
{
CLK=0;
RST=1;
DS1302_Write_Byte(addr);
DS1302_Write_Byte(dat);
CLK=0;
RST=0;
}

void SET_DS1302()
{
uchar i;
Write_DS1302(0x8e,0x00);
for(i=0;i<7;i++)
{
Write_DS1302(0x80+2*i,(DateTime[i]/10<<4|(DateTime[i]%10)));
}
Write_DS1302(0x8e,0x80);
}

void GetTime()
{
uchar i;
for(i=0;i<7;i++)
{
DateTime[i]=Read_Data(0x81+2*i);
}
}

uchar Read_LCD_State()
{
uchar state;
RS=0;    //命令
RW=1;    //讀
EN=1;    //讀為高電平
DelayMS(1);
state=P0;
EN=0;
DelayMS(1);
return state;  //要輸出
}

void LCD_Busy_Wait() //LCD1602響應速度相對于單片機來說是偏慢的
{
while((Read_LCD_State()&0x08)==0x80);
DelayMS(5);
}

void Write_LCD_Data(uchar dat) //寫數據
{
LCD_Busy_Wait(); //忙檢測
RS=1;    //數據
RW=0;    //寫為低電平
EN=0;    //寫操作時為低電平
P0=dat;
EN=1;
DelayMS(1);
EN=0;
}

void Write_LCD_Command(uchar cmd)//寫命令
{
LCD_Busy_Wait();
RS=0;    //命令
RW=0;    //寫為低電平
EN=0;    //寫操作時為低電平
P0=cmd;
EN=1;
DelayMS(1);
EN=0;
}

void Init_LCD() //LCD初始化
{
Write_LCD_Command(0x38); DelayMS(1);
Write_LCD_Command(0x01); DelayMS(1);
Write_LCD_Command(0x06); DelayMS(1);
Write_LCD_Command(0x0C); DelayMS(1);
}

void Set_LCD_POS(uchar p)
{
Write_LCD_Command(p+0x80);
}

void Display_LCD_String(uchar p,uchar *s)
{
uchar i;
Set_LCD_POS(p);
for(i=0;i<16;i++)
{
Write_LCD_Data(s[i]);
DelayMS(1);
}
}

void Format_DateTime(uchar d,uchar *a)
{
a[0]=d/10+'0';a[1]=d%10+'0';
}

uchar isLeapYear(uint y)
{
return (y%4==0&&y%100!=0)||(y%400==0);
}

void DateTime_Adjust(char x)
{
switch (Adjust_Index)
{
case 6:    //年
if(x== 1&&DateTime[6]<99) DateTime[6]++;
if(x==-1&&DateTime[6]>0)  DateTime[6]--;
MonthsDays[2]=isLeapYear(2000+DateTime[6])? 29:28;
if(DateTime[3]>MonthsDays[DateTime[4]])
   DateTime[3]=MonthsDays[DateTime[4]];
//RefreshWeekDay();
break;

case 4:    //月
if(x== 1&&DateTime[4]<12) DateTime[4]++;
if(x==-1&&DateTime[4]>1)  DateTime[4]--;
MonthsDays[2]=isLeapYear(2000+DateTime[6])? 29:28;
if(DateTime[3]>MonthsDays[DateTime[4]])
DateTime[3]=MonthsDays[DateTime[4]];
//RefreshWeekDay();
break;
case 3: //日
MonthsDays[2]=isLeapYear(2000+DateTime[6])? 29:28;
if(x== 1&&DateTime[3]<MonthsDays[DateTime[4]]) DateTime[3]++;
if(x==-1&&DateTime[3]>0) DateTime[3]--;
//RefreshWeekDay();
break;
case 2:    //時
if(x== 1&&DateTime[2]<23) DateTime[2]++;
if(x==-1&&DateTime[2]>0)  DateTime[2]--;
break;

case 1:    //秒
if(x== 1&&DateTime[1]<59) DateTime[1]++;
if(x==-1&&DateTime[1]>0)  DateTime[1]--;
break;
}
}

void main()
{
  Init_LCD();
  while(1)
  {
GetTime();
if(K1==0)
{
   DelayMS(10); //按鍵消抖
   while(K1==0);
   if(Adjust_Index==-1||Adjust_Index==1) {Adjust_Index=7;}//uchar Change_Flag[]="-MHDM-Y";
   Adjust_Index--;
   if(Adjust_Index==5) Adjust_Index=4;
   LCD_DSY_BUFFER2[13]='[';
   LCD_DSY_BUFFER2[14]=Change_Flag[Adjust_Index];
   LCD_DSY_BUFFER2[15]=']';
   if(K2==0) //  加
   {
   DelayMS(10); //按鍵消抖
      while (K2==0); DateTime_Adjust(1);
   }
else if(K3==0)  //  減
   {
DelayMS(10); //按鍵消抖
while (K3==0); DateTime_Adjust(-1);
   }
else if(K4==0)  // 確定
   {
DelayMS(10); //按鍵消抖
while(K4==0);
SET_DS1302(); //調整后的時間寫入DS1302
LCD_DSY_BUFFER2[13]=' ';
LCD_DSY_BUFFER2[14]=' ';
LCD_DSY_BUFFER2[15]=' ';
Adjust_Index=-1;
   }
}
  }
Format_DateTime(DateTime[6],LCD_DSY_BUFFER1+5);    //年
Format_DateTime(DateTime[4],LCD_DSY_BUFFER1+8);    //月
Format_DateTime(DateTime[3],LCD_DSY_BUFFER1+11); //日
strcpy(LCD_DSY_BUFFER1+13,WEEK[DateTime[5]]);    //week

Format_DateTime(DateTime[2],LCD_DSY_BUFFER2+5);    //時
Format_DateTime(DateTime[1],LCD_DSY_BUFFER2+8);    //分
Format_DateTime(DateTime[0],LCD_DSY_BUFFER2+11); //秒

Display_LCD_String(0x00,LCD_DSY_BUFFER1);
Display_LCD_String(0x40,LCD_DSY_BUFFER2);
}