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本帖最后由 艾伊水郡 于 2013-5-21 22:23 编辑
大家可以练习练习 时钟程序（有闹钟，可设置时间）： #include #include #include #define uchar unsigned char #define uint unsigned int uchar a; uchar XPOS,YPOS; ***it RS = P2^5; //Pin4 ***it RW = P2^6; //Pin5 ***it E = P2^7; //Pin6 ***it CLK=P3^6; //txd ***it DATA=P3^5; //RXD ***it SH_LD=P3^7; // ***it buz=P3^4; #define Data P0 //数据端口 uchar time,shi,fen,miao,shi11,shi12,fen11,fen12,miao11,miao12,miao1,fen1,shi1,yue1,r1,nian11,nian12,nian13,nian14,yue,yue11,yue12,r,r11,r12; uchar Time1[]={'0','1','2','3','4','5','6','7','8','9'}; uint nian,nian1; /******************************************************************/ /* 函数声明 */ /******************************************************************//***************************************************************/ void DelayUs(unsigned char us)//delay us { unsigned char uscnt; uscnt=us>>1;/* Crystal frequency in 12MHz*/ while(--uscnt); } /******************************************************************/ void DelayMs(unsigned char ms)//delay Ms { while(--ms) { DelayUs(250); DelayUs(250); DelayUs(250); DelayUs(250); } } void WriteCommand(unsigned char c) { DelayMs(5);//short delay before operation E=0; RS=0; RW=0; _nop_(); E=1; Data=c; E=0; } /****************************************************************/ void WriteData(unsigned char c) { DelayMs(5); //short delay before operation E=0; RS=1; RW=0; _nop_(); E=1; Data=c; E=0; RS=0; } /*********************************************************************/ void ShowChar(unsigned char pos,unsigned char c) { unsigned char p; //p=pos+0x80; //是第二行则命令代码高4位为0x8 p=pos; WriteCommand (p);//write command WriteData (c); //write data } void Writer_***c(uchar cspos,uchar*s) { WriteCommand (cspos); while(*s!=' ') { WriteData (*s); s++; } } void InitLcd() { DelayMs(15); WriteCommand(0x38); //display mode WriteCommand(0x38); //display mode WriteCommand(0x0f); //display mode WriteCommand(0x06); //显示光标移动位置 WriteCommand(0x0c); //显示开及光标设置 WriteCommand(0x01); //显示清屏 } void Wenzi_yiwei(int z) { int i; for(i=0;i DelayMs(1000); WriteCommand(0x18); } } void Liushui_d() { P1=_crol_(P1,1); DelayMs(1000); } void initiatejs0(void) { time=0;//全局变量随计数器而加一 TMOD=0X01;//js0工作于方式一下16位的，外部中断不起作用 TH0=0x4b; TL0=0xff; ET0=1;//ET0源允许 EA=1;//EA总允许 TR0=1;//启动js0 } void sufas(uchar shi0)//得到时分秒，各位 { shi11=shi0/10; shi12=shi0%10; } void sufaf(uchar fen0) { fen11=fen0/10; fen12=fen0%10; } void sufam(uchar miao0) { miao11=miao0/10; miao12=miao0%10; } void sufan(uint nian0) { nian11=nian0/1000; nian12=(nian0%1000)/100; nian13=((nian0%1000)%100)/10; nian14=((nian0%1000)%100)%10; } void sufay(uchar yue0) { yue11=yue0/10; yue12=yue0%10; } void sufar(uchar r0) { r11=r0/10; r12=r0%10; } void SJ_intial() { nian=2013; sufan(nian); yue=1; sufay(yue); r=7; sufar(r); shi=23; sufas(shi); fen=59; sufaf(fen); miao=40; sufam(miao); Writer_***c(0x80,"TIME : : "); Writer_***c(0xC0,"DATE >-__-< "); ShowChar(0xc5,Time1[nian11]); ShowChar(0xc6,Time1[nian12]); ShowChar(0xc7,Time1[nian13]); ShowChar(0xc8,Time1[nian14]); ShowChar(0xca,Time1[yue11]); ShowChar(0xcb,Time1[yue12]); ShowChar(0xcd,Time1[r11]); ShowChar(0xce,Time1[r12]); ShowChar(0x86,Time1[shi11]); ShowChar(0x87,Time1[shi12]); ShowChar(0x89,Time1[fen11]); ShowChar(0x8a,Time1[fen12]); ShowChar(0x8c,Time1[miao11]); ShowChar(0x8d,Time1[miao12]); } void SJ_xianshi(uchar shi,uchar fen,uchar miao) { if(miao!=miao1) { sufam(miao); ShowChar(0x8c,Time1[miao11]); ShowChar(0x8d,Time1[miao12]); miao1=miao; } if(fen!=fen1) { sufaf(fen); ShowChar(0x89,Time1[fen11]); ShowChar(0x8a,Time1[fen12]); fen1=fen; } if(shi!=shi1) { sufas(shi); ShowChar(0x86,Time1[shi11]); ShowChar(0x87,Time1[shi12]); shi1=shi; } if(r!=r1) { sufar(r); ShowChar(0xcd,Time1[r11]); ShowChar(0xce,Time1[r12]); r1=r; } if(yue!=yue1) { sufay(yue); ShowChar(0xca,Time1[yue11]); ShowChar(0xcb,Time1[yue12]); yue1=yue; } if(nian!=nian1) { sufan(nian); ShowChar(0xc5,Time1[nian11]); ShowChar(0xc6,Time1[nian12]); ShowChar(0xc7,Time1[nian13]); ShowChar(0xc8,Time1[nian14]); nian1=nian; } } void SJ_xz() { if(miao>=60) { fen++; miao=0; if(fen==60) { shi++; fen=0; if(shi==24) { r++; shi=0; if((yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12)&&r>31) { r=1; yue++; if(yue>12) { nian++; yue=1; } } else { if((yue==4||yue==6||yue==9||yue==11)&&r>30) { r=1; yue++; } else { if((yue==2||nian%100==0)&&r>29&&nian%400==0) { yue++; r=1; } else { if((yue==2||nian%100==0)&&(nian%400!=0)&&(r>28)) { yue++; r=1; } else { if((yue==2||nian%100!=0)&&(nian%4==0)&&r>29) { yue++; r=1; } } } } } } } } } uchar get_data() { uchar value=0x00; uint cnt; SH_LD=1; _nop_(); SH_LD=0; _nop_(); SH_LD=1; _nop_(); _nop_(); _nop_(); _nop_(); for(cnt=0;cnt<8;cnt++) { value = value<<1; DATA=1; CLK=1; _nop_();//1us; _nop_(); CLK=0; if(DATA) { value|=0x01; } _nop_();CLK=1; } CLK=1;SH_LD=1; return value; } void key_scan() { if(get_data()==0x10) { nian++; } if(get_data()==0x02) { nian--; } if(get_data()==0x20) { yue++; if(yue==13) yue=1; } if(get_data()==0x40) { r++; if((yue==1||yue==3||yue==5||yue==7||yue==8||yue==10||yue==12)&&r>31) { r=1; } else { if((yue==4||yue==6||yue==9||yue==11)&&r>30) { r=1; } else { if((yue==2||nian%100==0)&&r>29&&nian%400==0) { r=1; } else { if((yue==2||nian%100==0)&&(nian%400!=0)&&(r>28)) { r=1; } else { if((yue==2||nian%100!=0)&&(nian%4==0)&&r>29) { r=1; } }}}} } if(get_data()==0x80) { shi++; if(shi==24) shi=0; } if(get_data()==0x08) { fen++; if(fen==60) fen=0; } if(get_data()==0x04) { miao++; if(miao==60) miao=0; } } void FM_baoshi() { if(fen==0&&(miao==1||miao==2||miao==3||miao==4||miao==5)) { buz=~buz; DelayMs(500); } buz=1; } void main() { InitLcd(); WriteCommand(0x01); SJ_intial(); initiatejs0(); P1=0XEE; while(1) { FM_baoshi(); key_scan(); SJ_xz(); SJ_xianshi(shi,fen,miao); //Wenzi_yiwei(1); Liushui_d(); } } void js0(void) interrupt 1 { TH0=0x4b;//一次中断50毫秒 TL0=0xff; time++; if(time==20) { //P1=0Xfe; time=0; miao++; } } 
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· 2013-9-2 03:35:11
 学好单片机啊。
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· 2013-10-1 09:11:22
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· 2014-8-10 23:42:11
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/6 
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