原创 电子种C51

#include
#define uchar unsigned char
#define  XS  P2  
sbit  RS = P1^0 ;
sbit  RW = P1^1 ;
sbit  EN = P1^2 ;
sbit   io="P1"^3;
sbit    sck="P1"^4;
sbit    ce= P1^5;
uchar minute="0",second=0 ,hour=0,month=0 ,day=0 ,xinqi=0 ,year=0;
void LCD_delay()  reentrant
{   uchar i,j;
   for(i=0;i<10;i++)
    for(j=0;j<10;j++)
  ;
}

void LCD_command(uchar command)  //reentrant   using  3
{            
    XS="command";
  RS=0;
  RW=0;
  EN=0;
 
  LCD_delay();
  EN=1;
}
void LCD_data(uchar dat) //reentrant
{
   XS="dat"; 
  RS=1;
  RW=0;
  EN=0;
  
  LCD_delay();
    EN="1";
}
void LCD_write_char(uchar dat)   //  reentrant
{
  LCD_data(dat);
}
void initlcd()
{
  LCD_command(0x01);  
  LCD_command(0x38);    
  LCD_command(0x0c);  
  LCD_command(0x06);
  LCD_command(0x01);   
}
void showtime(void)
{
                      LCD_command(0x85);
                      //LCD_write_char('X');
                      //LCD_write_char('-');
                      //LCD_data(xinqi%10+0x30);
                      //LCD_write_char(' ');
                     LCD_write_char('Y');
                      LCD_write_char('-');
                      LCD_data(year/10+0x30);
                      LCD_data(year%10+0x30);
                      LCD_write_char(' ');
                      LCD_write_char('M');
                      LCD_write_char('-');
                      LCD_data(month/10+0x30);
                      LCD_data(month%10+0x30);
                      LCD_write_char(' ');
                      LCD_write_char('D');
                      LCD_write_char('-');
                      LCD_data(day/10+0x30);
                      LCD_data(day%10+0x30);
                    
                      LCD_command(0xc5);
                      LCD_data(hour/10+0x30);
                      LCD_data(hour%10+0x30);
                      LCD_write_char(':');
                      LCD_data(minute/10+0x30);
                      LCD_data(minute%10+0x30);
                      LCD_write_char(':');
                      LCD_data(second/10+0x30);
                      LCD_data(second%10+0x30);
}
void write_ds1302_byte(uchar temp)
{

  uchar i;
  for(i=0;i<8;i++)
     {
        sck = 0;
      io=(bit)(temp&0x01);
      sck="1";
      temp >>=1;
          
      }
}
void write_ds1302(uchar address,uchar dat)
{  
  ce="0";
  sck="0";
  ce="1";
  write_ds1302_byte(address);
  write_ds1302_byte(dat);
  ce="0";
}
unsigned char read_ds1302(uchar address)
{
       uchar i,temp=0x00,dat1,dat2;
       ce="0";          
       sck="0";            
       ce="1"; 
       write_ds1302_byte(address);
       for(i=0;i<8;i++)
       {
        
         if( io )
          temp|=0x80;
         sck = 1;
  temp>>=1;
  sck="0";
       }    
      ce="0";
       dat1=temp;
       dat2=dat1/16;                
       dat1=dat1%16;                  
       dat1=dat1+dat2*10;
       return (dat1);
}
void read_time(void)
{
    uchar j;
    j="0x81";
     second="read"_ds1302(j);
    j="j"+2;
    minute="read"_ds1302(j);
    j="j"+2;
     hour="read"_ds1302(j);
    j="j"+2; 
    day= read_ds1302(j);
    j="j"+2; 
   month="read"_ds1302(j);
    j="j"+2; 
    xinqi="read"_ds1302(j);
    j="j"+2;
   year="read"_ds1302(j);
}
void set_time(void)
{
 uchar j;
 j=0x80;
       write_ds1302(j,second);
        j="j"+2;
       write_ds1302(j,minute);
        j="j"+2;
       write_ds1302(j,hour);
        j="j"+2;
       write_ds1302(j,day);
        j="j"+2;
       write_ds1302(j,month);
        j="j"+2;
       write_ds1302(j,xinqi);
        j="j"+2;
       write_ds1302(j,year);
        j="j"+2; 
}
void time_menu()
{      
   LCD_command(0x01);
    LCD_command(0x80); 
  LCD_write_char('D');
  LCD_write_char('A');
  LCD_write_char('T');
    LCD_write_char('E');
    LCD_command(0xC0); 
  LCD_write_char('T');
  LCD_write_char('I');
  LCD_write_char('M');
    LCD_write_char('E');      
}
void ds1302_init(void)
{
write_ds1302(0x8e,0x00);
write_ds1302(0x80,second&0x00);
       set_time();
write_ds1302(0x8e,0x80);
}
void main()
{
     initlcd();
  ds1302_init();
  time_menu();
  while(1)
  { 
  read_time();
  showtime();
   }

}