- #include <reg52.h>
- #include <intrins.h>
- #include <string.h>
- #define uint unsigned int
- #define uchar unsigned char
- sbit IO = P1^0;
- sbit SCLK = P1^1;
- sbit RST = P1^2;
- sbit RS = P2^0;
- sbit RW = P2^1;
- sbit EN = P2^2;
- uchar *WEEK[]=
- {
- "SUN","***","MON","TUS","WEN","THU","FRI","SAT"
- };
- uchar LCD_DSY_BUFFER1[]={"DATE 00-00-00 "};
- uchar LCD_DSY_BUFFER2[]={"TIME 00:00:00 "};
- uchar DateTime[7];
- void DelayMS(uint ms)
- {
- uchar i;
- while(ms--)
- {
- for(i=0;i<120;i++);
- }
- }
- void Write_A_Byte_TO_DS1302(uchar x)
- {
- uchar i;
- for(i=0;i<8;i++)
- {
- IO=x&0x01;SCLK=1;SCLK=0;x>>=1;
- }
- }
- uchar Get_A_Byte_FROM_DS1302()
- {
- uchar i,b=0x00;
- for(i=0;i<8;i++)
- {
- b |= _crol_((uchar)IO,i);
- SCLK=1;SCLK=0;
- }
- return b/16*10+b%16;
- }
- uchar Read_Data(uchar addr)
- {
- uchar dat;
- RST = 0;SCLK=0;RST=1;
- Write_A_Byte_TO_DS1302(addr);
- dat = Get_A_Byte_FROM_DS1302();
- SCLK=1;RST=0;
- return dat;
- }
- void GetTime()
- {
- uchar i,addr = 0x81;
- for(i=0;i<7;i++)
- {
- DateTime[i]=Read_Data(addr);addr+=2;
- }
- }
- uchar Read_LCD_State()
- {
- uchar state;
- RS=0;RW=1;EN=1;DelayMS(1);
- state=P0;
- EN = 0;DelayMS(1);
- return state;
- }
- void LCD_Busy_Wait()
- {
- while((Read_LCD_State()&0x80)==0x80);
- DelayMS(5);
- }
- void Write_LCD_Data(uchar dat)
- {
- LCD_Busy_Wait();
- RS=1;RW=0;EN=0;P0=dat;EN=1;DelayMS(1);EN=0;
- }
- void Write_LCD_Command(uchar cmd)
- {
- LCD_Busy_Wait();
- RS=0;RW=0;EN=0;P0=cmd;EN=1;DelayMS(1);EN=0;
- }
- void Init_LCD()
- {
- 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';
- }
- void main()
- {
- Init_LCD();
- while(1)
- {
- GetTime();
- Format_DateTime(DateTime[6],LCD_DSY_BUFFER1+5);
- Format_DateTime(DateTime[4],LCD_DSY_BUFFER1+8);
- Format_DateTime(DateTime[3],LCD_DSY_BUFFER1+11);
- strcpy(LCD_DSY_BUFFER1+13,WEEK[DateTime[5]]);
- Format_DateTime(DateTime[2],LCD_DSY_BUFFER1+5);
- Format_DateTime(DateTime[1],LCD_DSY_BUFFER1+8);
- Format_DateTime(DateTime[0],LCD_DSY_BUFFER1+11);
- Display_LCD_String(0x00,LCD_DSY_BUFFER1);
- Display_LCD_String(0x40,LCD_DSY_BUFFER2);
- }
- }
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时钟.zip
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