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代码如下：
#include #define uchar unsigned char #define uint unsigned int #define LCD_data P0 //定义液晶数据口 ***it LCD_RS=P1^0; //寄存器选择输入 ***it LCD_RW=P1^1; //液晶读写控制 ***it LCD_EN=P1^2; //液晶使能控制 ***it LCD_PSB=P1^3; //串并控制方式 ***it s1=P2^0; ***it s2=P2^1; ***it s3=P2^2; ***it s4=P2^3; ***it rd=P3^7; ***it beep=P3^4; ***it dscs=P1^4; ***it dsas=P1^5; ***it dsrw=P1^6; ***it dsds=P1^7; ***it dsirq=P3^3; bit flag1,flag_ri; uchar count,s1num,flag,t0_num; char miao,shi,fen,year,month,day,week,amiao,afen,ashi; uchar code table[20]={"室内现有 "}; uchar code table0[]= {"20 -- -- "}; uchar code table1[]= {" : : "}; uchar code table2[]= {" "}; uchar code table3[]= {" "}; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void di() { beep=0; delay(100); beep=1; } void write_cmd(uchar cmd) { LCD_RS=0; LCD_RW=0; LCD_EN=0; P0=cmd; delay(5); LCD_EN=1; delay(5); LCD_EN=0; } void write_dat(uchar dat) { LCD_RS=1; LCD_RW=0; LCD_EN=0; P0=dat; delay(5); LCD_EN=1; delay(5); LCD_EN=0; } void lcd_pos(uchar X,uchar Y) { uchar pos; if(X==0) { X=0x80; } else if(X==1) { X=0x90; } else if(X==2) { X=0x88; } else if(X==3) { X=0x98; } pos=X+Y; write_cmd(pos); } void displaygd() { uchar i; lcd_pos(0,0); for(i=0;i<8;i++) { write_dat(table0[i]); delay(2); } lcd_pos(1,0); for(i=0;i<8;i++) { write_dat(table1[i]); delay(2); } } void write_ds(uchar add,uchar date) { dscs=0; dsas=1; dsds=1; dsrw=1; P0=add; dsas=0; dsrw=0; P0=date; dsrw=1; dsas=1; dscs=1; } uchar read_ds(uchar add) { uchar ds_date; dsas=1; dsds=1; dsrw=1; dscs=0; P0=add; dsas=0; dsds=0; P0=0xff; ds_date=P0; dsds=1; dsas=1; dscs=1; return ds_date; } void set_time() { write_ds(0,0); write_ds(1,0); write_ds(2,0); write_ds(3,0); write_ds(4,0); write_ds(5,0); write_ds(6,0); write_ds(7,0); write_ds(8,0); write_ds(9,0); } void read_alarm() { amiao=read_ds(1); afen=read_ds(3); ashi=read_ds(5); } void init() { uchar i; EA=1; EX1=1; IT1=1; flag1=0; t0_num=0; s1num=0; week=1; rd=0; write_ds(0x0A,0x20); write_ds(0x0B,0x26); set_time(); LCD_PSB=1; //并口方式 write_cmd(0x30); //基本指令操作 delay(5); write_cmd(0x0C); delay(5); write_cmd(0x01); delay(5); displaygd(); } void write_sfm(uchar add,uchar date) //计算add为多少时对应时分秒 add=4时 7分 10秒 { char shi,ge; shi=date/10; ge=date%10; lcd_pos(1,add); write_dat(0x30+shi); write_dat(0x30+ge); } void write_nyr(uchar add,uchar date) //计算add为多少时对应年月日 add=3年 6月 9日 { char shi,ge; shi=date/10; ge=date%10; lcd_pos(0,add); write_dat(0x30+shi); write_dat(0x30+ge); } void write_week(uchar we) { lcd_pos(2,0); switch(we) { case 1: write_dat('M');delay(5); write_dat('O');delay(5); write_dat('N');break; case 2: write_dat('T');delay(5); write_dat('U');delay(5); write_dat('E');break; case 3: write_dat('W');delay(5); write_dat('E');delay(5); write_dat('D');break; case 4: write_dat('T');delay(5); write_dat('H');delay(5); write_dat('U');break; case 5: write_dat('F');delay(5); write_dat('R');delay(5); write_dat('I');break; case 6: write_dat('S');delay(5); write_dat('A');delay(5); write_dat('T');break; case 7: write_dat('S');delay(5); write_dat('U');delay(5); write_dat('N');break; } } void keyscan() { if(flag_ri==1) { if((s1==0)||(s2==0)||(s3==0)||(s4==0)) { delay(5); if((s1==0)||(s2==0)||(s3==0)||(s4==0)) { while(!(s1&s2&s3&s4));di(); flag_ri=0; } } } if(s1==0) { delay(5); if(s1==0) { s1num++; if(flag1==1) { if(s1num==4) s1num=1; } flag=1; while(!s1); di(); switch(s1num) { case 1: lcd_pos(1,4);write_cmd(0x0f); break; case 2: lcd_pos(1,2);break; case 3: lcd_pos(1,0);break; case 5: lcd_pos(0,5);break; case 6: lcd_pos(0,3);break; case 7: lcd_pos(0,1);break; case 4: lcd_pos(2,0);break; case 8: s1num=0; write_cmd(0x0c); flag=0; write_ds(0,miao); write_ds(2,fen); write_ds(4,shi); write_ds(6,week); write_ds(7,day); write_ds(8,month); write_ds(9,year); break; } } } if(s1num!=0) { if(s2==0) { delay(1); if(s2==0) { while(!s2); di(); switch(s1num) { case 1: miao++; if(miao==60) miao=0; write_sfm(4,miao); lcd_pos(1,4); break; case 2: fen++; if(fen==60) fen=0; write_sfm(2,fen); lcd_pos(1,2); break; case 3: shi++; if(shi==24) shi=0; write_sfm(0,shi); lcd_pos(1,0); break; case 4: week++; if(week==8) week=1; write_week(week); lcd_pos(2,0); break; case 5: day++; if(day==32) day=1; write_nyr(5,day); lcd_pos(0,5); break; case 6: month++; if(month==13) month=1; write_nyr(3,month); lcd_pos(0,3); break; case 7: year++; if(year==100) year=0; write_nyr(1,year); lcd_pos(0,1); break; } } } if(s3==0) { delay(1); if(s3==0) { while(!s3); di(); switch(s1num) { case 1: miao--; if(miao==-1) miao=59; write_sfm(4,miao); lcd_pos(1,4); break; case 2: fen--; if(fen==-1) fen=59; write_sfm(2,fen); lcd_pos(1,2); break; case 3: shi--; if(shi==-1) shi=23; write_sfm(0,shi); lcd_pos(1,0); break; case 4: week--; if(week==-1) week=7; write_week(week); lcd_pos(2,0); break; case 5: day--; if(day==-1) day=31; write_sfm(5,day); lcd_pos(0,5); break; case 6: month--; if(month==0) month=12; write_sfm(3,month); lcd_pos(0,3); break; case 7: year--; if(year==-1) year=99; write_sfm(1,year); lcd_pos(0,1); break; } } } } if(s4==0) { delay(5); if(s4==0) { flag1=~flag1; while(!s4); di(); if(flag1==0) { flag=0; lcd_pos(1,0); write_dat(' '); write_dat(' '); write_cmd(0x0c); write_ds(1,miao); write_ds(3,fen); write_ds(5,shi); } else { read_alarm(); miao=amiao; fen=afen; shi=ashi; lcd_pos(1,0); write_dat('R'); write_dat('i'); lcd_pos(1,0); write_sfm(0,ashi); write_sfm(2,afen); write_sfm(4,amiao); } } } } void main() { init(); while(1) { keyscan(); if(flag_ri==1) { di(); delay(100); di(); delay(500); } if(flag==0&&flag1==0) { keyscan(); year=read_ds(9); month=read_ds(8); day=read_ds(7); week=read_ds(6); shi=read_ds(4); fen=read_ds(2); miao=read_ds(0); write_sfm(4,miao); write_sfm(2,fen); write_sfm(0,shi); write_week(week); write_nyr(1,year); write_nyr(3,month); write_nyr(5,day); } } } void exter() interrupt 2 { uchar c; flag_ri=1; c=read_ds(0x0c); } 
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2013-2-23 00:17:19
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2013-2-27 09:15:26
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楼主问题解决了吗？我也遇到了这个问题
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