潮大大
_c/blog/static/2482031132012330340436/参考。 
电子时钟的程序很简单，网上到处都是。如果你的单片机没有LCD驱动，那就外接个HT1621做驱动好了。然后再去找1621的程序。这样就ok了
这个例子LCD是1602，时钟是用DS1302得到的。/*************** writer:w ******************/#include #include #include #define uint unsigned int#define uchar unsigned charsbit 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); }}
