st.rar_ST_ST7920_visual c

/*********************************************************** 程序功能：在12864液晶上显示一屏汉字 ----------------------------------------------------------- 跳线设置：将跳线座J5的1脚(+)和2脚短接，选择并行数据传输方式 ----------------------------------------------------------- 测试说明：观察液晶显示 ***********************************************************/ #include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit lcden=P3^4;//数据/命令选择端 sbit lcdrs=P3^5;//使能端1使能 sbit dula=P2^6;//关短数码管因为和液晶用相同的脚 sbit wela=P2^7;//锁存端 sbit RET=P1^0;//复位端0复位 sbit PSB=P1^2;//PSB 1并行0串行 sbit s1=P3^0; sbit s2=P3^1; sbit s3=P3^3; sbit rd=P3^7; uchar count,s1num;//s1num表示s1被按下的次数 uchar shi,fen,miao,yue,nian,yuedi,run; uchar code tabletime[]="20 - - : "; uchar code tablesen[]="000"; uchar code tabletemp[]="000.0"; uchar code tablecurr[]="0000.0"; uint i; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--);//要加分号 } //写指令RS=0,RW=0,D0~D7=指令码，E=高脉冲注意时序 void write_com(uchar com) { lcdrs=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; } //写数据RS=1,RW=0,D0~D7=数据，E=高脉冲注意时序 void write_date(uchar date) { lcdrs=1; P0=date; delay(5); lcden=1; delay(5); lcden=0; } void write_sm(uchar add,uchar date)//写时秒函数 { uchar shi,ge; shi=date/10; ge=date%10; write_com(0x9c+add); write_date(0x30+shi); write_date(0x30+ge); } void write_fen(uchar add,uchar date)//写分函数 { uchar shi,ge; shi=date/10; ge=date%10; write_com(0x9c+add); write_date(0x20); write_date(0x30+shi); write_date(0x30+ge); } void write_nian(uchar date)//写年函数 { uchar shi,ge; shi=date/10; ge=date%10; write_com(0x99); write_date(0x30+shi); write_date(0x30+ge); } void write_yue(uchar date)//写月函数 { uchar shi,ge; shi=date/10; ge=date%10; write_com(0x9a); write_date(0x2d); write_date(0x30+shi); write_date(0x30+ge); } void init() { uchar num; //shi==1;fen==0;miao==0;yue==1;nian==1;//时间日期初值 dula=0; wela=0;//控制数码管的锁存端关闭防止功耗不够 RET=1;//复位端0复位 PSB=1;//PSB 1并行 lcden=0; write_com(0x30); //基本指令集 write_com(0x02); // 地址归位 write_com(0x0c); //整体显示打开,游标关闭 write_com(0x01); //清除显示 write_com(0x06); //游标右移 write_com(0x80); //设定显示的起始地址 write_com(0x92); write_date(0xcc); write_date(0xec); write_date(0xcb); write_date(0xf3); write_date(0xd2); write_date(0xc7); write_date(0xc6); write_date(0xf7); //显示天梭仪器 delay(1000); write_com(0x01);//清屏 write_com(0x80); write_date(0xcc); write_date(0xbd); write_date(0xb2); write_date(0xe2); write_date(0xc6); write_date(0xf7); //显示探测器 write_com(0x90); write_date(0xa3); write_date(0xd4); write_date(0xa3); write_date(0xbd); //第二行显示T= write_com(0x97); //写第二行末尾的显示地址 write_date(0xa1); write_date(0xe6); //显示温度的字符 write_com(0x88); //第三行显示地址 write_date(0x49); //显示I write_date(0x7f);//显示三角尖 write_date(0x6e);//显示n write_date(0x3d); //显示= write_com(0x8f); //第三行显示地址 write_date(0x6d); write_date(0x41); //显示mA /*探测器指标显示*/ write_com(0x85); //写第1行中间显示探测器数值 /*write_date(0x30); //百位 write_date(0x30); //十位 write_date(0x35); //个位*/ for (num=0;num<3;num++)//共18个 { write_date(tablesen[num]); delay(1); } /*温度值显示*/ write_com(0x93); //写第2行中间显示温度数值 /*write_date(0x30); //百位 write_date(0x38); //十位 write_date(0x30); //个位 write_date(0x2e); //小数点 write_date(0x35); //小数点后一位*/ for (num=0;num<5;num++)//共18个 { write_date(tabletemp[num]); delay(1); } /*电流值显示*/ write_com(0x8b); //写第3行中间显示电流数值 /*write_date(0x35); //千位 write_date(0x30); //百位 write_date(0x30); //十位 write_date(0x35); //个位 write_date(0x2e); //小数点 write_date(0x35); //小数点后一位*/ for (num=0;num<6;num++)//共18个 { write_date(tablecurr[num]); delay(1); } /*时间值显示*/ write_com(0x98); //写第4行显示时间日期 for (num=0;num<16;num++)//共18个 { write_date(tabletime[num]); delay(1); } //shi==1;fen==0;miao==0;yue==1;nian==10;//时间日期初值 write_nian(00); write_yue(1); write_sm(0,1); write_fen(1,0); write_sm(3,0); TMOD=0X01;//定时器0方式1 TH0=(65536-50000)/256;//12Mhz TL0=(65536-50000)%256;//付初值 EA=1;//开总中断 ET0=1;//开定时器0 TR0=1;//启动定时器*/ } void keyscan() { rd=0; if(s1==0) { delay(10); if(s1==0) { s1num++; while(!s1); if(s1num==1) { TR0=0;//关定时器 write_com(0x99);//移到年的地址 write_com(0x0f);//开光标开闪烁 } } switch (s1num) { case 2: write_com(0x9a);break;//移到月的地址; case 3: write_com(0x9c);break;//移到日的地址; case 4: write_com(0x9d);break;//移到分的地址; case 5: write_com(0x9f);break;//移到秒个位的地址 case 6: s1num=0;write_com(0x0c);TR0=1;break;//光标不再闪烁 } } if(s1num!=0) { if(s3==0) { delay(10); if(s3==0) { while(!s3); switch (s1num) { case 1: nian++;if(nian==99)nian=10;write_nian(nian);write_com(0x99);if(nian%4==0)run=1;else run=0;break; case 2: yue++;if(yue==13)yue=1;write_yue(yue);write_com(0x9a);break; case 3: switch (yue) { case 4: case 6: case 9: case 11:yuedi=31; break; case 2: if (run==1)yuedi=30; else yuedi=29; break; default:yuedi=32; break; } shi++; if(shi==yuedi)shi=1;write_sm(0,shi);write_com(0x9c);break; case 4: fen++;if(fen==24)fen=0;write_fen(1,fen);write_com(0x9d);break;//移到分十位的地址; case 5: miao++;if(miao==60)miao=0;write_sm(3,miao);write_com(0x9f);break; } } } /*else if(s3==0) { delay(10); if(s3==0) { while(!s3); switch (s1num) { case 1: nian--;if(nian==0)nian=99;write_nian(nian);write_com(0x99);break; case 2: yue--;if(yue==0)yue=12;write_yue(yue);write_com(0x9a);break; case 3: shi--;if(shi==0)shi=31;write_sm(0,shi);write_com(0x9c);break; case 4: fen--;if(fen==-1)fen=23;write_fen(1,fen);write_com(0x9d);break;//移到分十位的地址; case 5: miao--;if(miao==-1)miao=59;write_sm(3,miao);write_com(0x9f);break; } } }*/ } } /***************************主函数*************************/ void main( ) { init(); //初始化液晶 while(1) { keyscan(); } // while(1); } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; count++; if(count==10) { count=0; miao++; if(miao==60) { miao=0; fen++; if(fen==24) { fen=0; shi++; if(shi==yuedi) { shi=1; yue++; if(yue==13) { yue=1; nian++; if(nian==99) { nian=0; } write_nian(nian); } write_yue(yue); }