51单片机的液晶显示温度计程序

1、/温度值的整/数字电位器/分钟、秒/Timer0 中断/设定的分钟51 单片机的液晶显示温度计程序51 单片机的液晶显示温度计程序 #include <reg51.h>#include & lt;intrins.h >sbitRST = P2A0;sbitCLK= P2A1;sbitDQ= P2A2;sbitTSOR= P2A3;sbitALERT =P2A4;sbitRS= P2A7;sbitRW= P2A6;sbitEN= P2A5;/* 全局变量*/ static unsigned char temp1,temp2; 数部分、小数部分static unsigned ch

2、ar pos,posset; 电位值、设定值static unsigned char min,sec;static unsigned char count;计数static unsigned char minset;数static unsigned char status1,status2;/状态标志bit stop,timeover;/定时停止、结束static char line0 =00:00 ;static char line1 =. CW;/*/voidInitInterupt();voidKeyboardDelay();/*LCD驱动函数*/voidDelayL();voidDel

3、ayS();voidWriteCommand(unsigned char c);voidWriteData(unsigned char c);voidShowChar(unsigned char pos,unsigned char c);void ShowString(unsigned char line,char *ptr); voidInitLcd();/* 键盘 -程序*/ unsigned char GetKey();/*数字温度计驱动*/voidChangePos(bit sel,unsigned charpos1,unsigned char pos2);/* 温度传感器驱动*/vo

4、idDelay15();voidDelay60();voidDelay100ms();voidWrite0TS();voidWrite1TS();bitReadTS();voidResetTS();voidWriteByteTS(unsigned char byte);unsigned charReadByteTS();voidInitTS();voidGetTempTS();/* 主程序*/ void main (void) char code str1 = Hello World! ;char code str2 = 2002-10-20 unsigned char i;SP=0x50;/

5、初始化数据ChangePos(0,255-pos,255-pos);ALERT=0;TSOR=1;DelayL();InitLcd();DelayL();ShowString(0,str1);ShowString(1,str2);for(i=0;i<15;i+)Delay100ms();InitInterupt();minset=10;posset=0;min=minset;pos=posset;sec=0;count=0;P1=0xF0;status1=0;status2=0;stop=1;timeover=0;/报警灯灭/1-wire 总线释放/初始化 LCD/启动画面/初始化中断设

6、置/ 缺省定时 10 分钟/ 缺省电位器值 0/设置电位器 InitTS();/初始化温度计while(1) / 循环显示温度值 GetTempTS();line10=0x20;i=temp1;if(i>39)/ 超过 40 摄氏度，告警灯亮ALERT=1;if(i>99)/ 超过 100 摄氏度，显示温度的百位line10=0x31;i-=100;/显示温度的十位/显示个位/显示小数位/若定时结束，则电位器缓line11=i/10+0x30;line12=i%10+0x30;line14=temp2+0x30; if(timeover)慢复 0for(;pos>0;pos-

7、)ChangePos(0,255-pos,255-pos);_nop_();_nop_();timeover=0; posset=0;if(pos>posset)/若按键修改电位器位置for(;pos>posset;pos-)/则缓变到设定值ChangePos(0,255-pos,255-pos);_nop_();_nop_();ChangePos(0,255-pos,255-pos);else if(pos<posset)for(;pos<posset;pos+)ChangePos(0,255-pos,255-pos); _nop_();_nop_();ChangeP

8、os(0,255-pos,255-pos); i=pos;line19=0x20;/显示电位器等级值if(i>99)line19=i/100+0x30; i=i%100; line110=i/10+0x30; line111=i%10+0x30;ShowString(1,line1);line05=min/10+0x30;/显示时间line06=min%10+0x30;line08=sec/10+0x30;line09=sec%10+0x30;ShowString(0,line0); Delay100ms();void InitInterupt()TMOD=0x21;/初始化中断设置TL

9、1=0xFD;TH1=0xFD;PX0=1;EA=1;ES=1;PCON=0;TR1=1;SCON=0x50;TL0=0x00;TH0=0x4C;ET0=1; EX0=1;IT0=1;void KeyboardDelay() unsigned char i,j;i=0x40;j=0xFF;while(i-)while(j-);/*/ 定时 0.05m/按键中断延时中断处理*/Int0_process() interrupt 0 using 0 unsigned char key;unsigned char keycode= TP;unsigned char step3=1,2,5;/获得按键值

10、EA=0;key=GetKey();switch(key)case 0:stop=!stop;min=minset;sec=0;break;case 1:case 2:case 3:if(stop)minset+=stepkey-1;if(minset>60)minset=0;min=minset;break;case 5:case 6:case 7:if(stop)minset-=stepkey-5; if(minset>60) minset=0; min=minset;break;case 9:case 10:case 11: posset+=stepkey-9;break;c

11、ase 13:case 14:case 15:posset-=stepkey-13;break;default:break;TR0=!stop;KeyboardDelay();P1=0xF0;EA=1;Timer0_process() interrupt 1 using 0EA=0;TR0=0;TL0=0x00;TH0=0x4C;count+;if(count=20)/如果到累计定时到达 1sif(sec=0)/ 定时处理if(min=0) / 总定时到，则置结束标志 timeover=1;elsemin-; sec=59;elsesec-;count=0;TR0=1;EA=1;/*LCD 驱

12、动子程序*/void DelayL()unsigned char i,j;i=0xF0;j=0xFF;while(i-)while(j-);void DelayS()unsigned char i;i=0x1F;while(i-);void WriteCommand(unsigned char c) DelayS();EN=0;RS=0;RW=0;_nop_();EN=1;P0=c;EN=0;void WriteData(unsigned char c)DelayS();EN=0;RS=1;RW=0;_nop_();EN=1;P0=c;EN=0;RS=0;void ShowChar(unsig

13、ned char pos,unsigned char c) unsigned char p; if(pos>=0x10)p=pos+0xB0;elsep=pos+0x80;WriteCommand(p);WriteData(c);void ShowString(unsigned char line,char *ptr) unsigned char l,i; l=line<<4;for(i=0;i<16;i+)ShowChar(l+,*(ptr+i); void InitLcd() DelayL();WriteCommand(0x38);WriteCommand(0x38

14、);WriteCommand(0x06);WriteCommand(0x0C);WriteCommand(0x01);WriteCommand(0x80);/* 键盘子程序*/ unsigned char GetKey() unsigned k,t,i,j;k=P1;k=k&0xF0;i=0;while(k&0x10)&&i<4)i+;k=k>>1;k=0x01;j=0;while(j<4)P1=0xFFAk;_nop_();t=P1;t=tA0xFF;t=t&0xF0;if(t)break;j+;k=k<<1;k=j

15、*4+i;return k;/* 数字温度计驱动子程序*/void ChangePos(bit sel,unsigned char pos1,unsigned char pos2) unsigned char i;RST=0;DQ=0;CLK=0;RST=1;DQ=sel;_nop_();CLK=1;_nop_();CLK=0;for(i=0;i<8;i+) if(pos1&0x80) DQ=1;elseDQ=0;_nop_();CLK=1;_nop_();CLK=0;pos1=pos1<<1;for(i=0;i<8;i+)if(pos2&0x80)DQ

16、=1;elseDQ=0;_nop_();CLK=1;_nop_();CLK=0;pos2=pos2<<1; RST=0;/*void Delay100ms()unsigned char i,j,k;for(i=0;i<8;i+)for(j=0;j<25;j+)for(k=0;k<250;k+);void Delay15()unsigned char i; for(i=0;i<8;i+);void Delay60()- 温度传感器子程序*/ 延时 100ms/ 延时 15us/ 延时 60usunsigned char i; for(i=0;i<30;i

17、+);/ 写 bit 0void Write0TS()TSOR=1;TSOR=0;Delay15();Delay15();Delay15();Delay15();TSOR=1;_nop_();_nop_();/ 写 bit 1void Write1TS()TSOR=1;TSOR=0;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();TSOR=1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();Delay15();Delay15();Delay15();bit ReadT

18、S() bit b;TSOR=1;TSOR=0;_nop_();_nop_();_nop_();_nop_();TSOR=1;_nop_();_nop_();_nop_();_nop_();_nop_();b=TSOR;Delay15();Delay15();Delay15();_nop_();_nop_();/复位return b;void ResetTS()unsigned char i; TSOR=1;TSOR=0;for(i=0;i<8;i+)Delay60();TSOR=1;while(TSOR);for(i=0;i<8;i+)Delay60();/写一个字节void WriteByteTS(unsigned char byte) (byte )unsigned char i;for(i=0;i<8;i+)if(byte&0x01)Write1TS();elseWrite0TS(); byte=by