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华理信息工程综合课设：AT89C52

华理信息工程综合课设：AT89C52

作者: 某不科学的XX | 来源:发表于2017-07-10 10:11 被阅读0次

    信工课程设计：电路焊接与时序级编程

    • 主要芯片：AT89C52，DS18B20，24C16，HD7279
    • 主要功能：实时测温，手动风扇变速，自动风扇变速，PID控温，参数配置，密码验证，键盘变速连按等
    #include <REG52.H>

#include <stdio.h>
#include <math.h>
#include <intrins.h>


#define U8 unsigned char 

#define somenop(); _nop_();_nop_();_nop_();_nop_();_nop_();
#define somenop10(); somenop();somenop();
#define somenop25(); somenop();somenop();somenop();somenop();somenop();
#define somenop50(); somenop25();somenop25();
#define somenop100(); somenop50();somenop50();

#define kp  5
#define ki  5
#define kd  5

/*
#define CMD_RESET 0xA4
#define PIDA 12
#define PIDB 10
*/


unsigned char KeyNum;
unsigned char KeyValue;
int KeyCount1;
U8 temperature[2];
unsigned char MotorNow;
bit MotorFlag,returnFlag;
unsigned char firstmenu;
unsigned char MotorCount = 0;
unsigned int TempNow;
unsigned int TempCount =0;

bit TempInput = 0;

int duk,e1=0,e2=0,e3=0;

unsigned char Tset = 30;

unsigned char Tup[4];
unsigned char Tdown[4];

unsigned char Level[11] = {0,10,20,30,40,50,60,70,80,90,100};

unsigned char pass[4] = {1,2,3,4};

unsigned char code KeyTable[4] = {0x3B,0x3A,0x39,0x38};
unsigned char Buff[8] = {0,1,2,3,4,5,6,7};
//unsigned char Disp[8] = {0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97};
unsigned char code LEDValue[35] = {0xFC,0x44,0x79,0x5D,0xC5,0x9D,0xBD,0x54,0xFD,0xDD,
                                  0xFE,0x46,0x7B,0x5F,0xC7,0x9F,0xBF,0x56,0xFF,0xDF,
                                  0xF5,0xAD,0xB8,0x6D,0xB9,0xB1,0xF1,0x01,0xA9,0x00,//A B C D E F P - t 空 
                                  0x21,0x2C,0x25,0x2D// r u n o
                                                                        };

sbit CS = P1^4; 
sbit CLK = P1^5; 
sbit DATA = P1^7; 
sbit Motor = P1^2;
sbit DS1820_DQ= P1^3; 
sbit ECLK = P1^1;
sbit EDTA = P1^0;





void Key(void);
void Init_7279(void);
void send_byte(unsigned char);
void write_7279(unsigned char,unsigned char);
void display(unsigned char buff[]);
unsigned char ReadKey(void);
unsigned char receive_byte(void);
bit count(int ,int ,unsigned char);
void clean(void);
//void func(int);
void temper(void);
//void motor(void);
void motorConfigure(void);
void configure(void);
//void run(void);
//void runMotor(unsigned char);
void showTemp();
void choiceLevel();

bit DS1820_Reset(); //DS1820 复位
void DS1820_WriteData(U8 wData); //写数据到DS1820
U8 DS1820_ReadData(); //读数据
void displayTemperature();

void estart();
void estop();
bit ack();
void init_24c16();
void ewrite_byte(unsigned char);
unsigned char eread_byte();
void ewrite_add(unsigned char,unsigned char);
unsigned char eread_add(unsigned char);





void Menu(void);
void button(void);

void parun();
void pacon();

void paconb();
void paconf();

bit mm();

void pid();


void main (void) {
       int tmr;

       for(tmr=0;tmr<0x2000;tmr++);

       SP = 0xB0;
       //Init_7279();

       TMOD = 0x11; 
      
       EA = 1; 
       ET0 = 1;
       ET1 = 1;

       KeyCount1 = 0;

       TR0 = 1;
       TR1 = 1;

      // init_24c16();     



        
        firstmenu = 1;
        clean();


        //ewrite_add(4,Tdown[0]);ewrite_add(5,Tdown[1]);
        //ewrite_add(6,Tup[0]);ewrite_add(7,Tup[0]);
        //ewrite_add(10,50);ewrite_add(11,50);ewrite_add(12,50);
        Tdown[0] = eread_add(4);somenop25();
        Tdown[1] = eread_add(5);somenop25();
        Tup[0] = eread_add(6);somenop25();
        Tup[1] = eread_add(7);somenop25(); 


        Level[0] = eread_add(20);somenop25();
        Level[1] = eread_add(21);somenop25();
        Level[2] = eread_add(22);somenop25();
        Level[3] = eread_add(23);somenop25();
        Level[4] = eread_add(24);somenop25();
        Level[5] = eread_add(25);somenop25();
        Level[6] = eread_add(26);somenop25();
        Level[7] = eread_add(27);somenop25();
        Level[8] = eread_add(28);somenop25();
        Level[9] = eread_add(29);somenop25();
        Level[10] = eread_add(30);somenop25();
       while(1){
            
             display(Buff);
             Menu();
             button();
        
        }   



       
        
           

      /*  电机    
       MotorCount = 60;
       MotorNow = 0;
       TR0 = 0;

       while(1){
         TR0 = MotorFlag;
        // run();
       } ;

    */




       /*  存储
       init_24c16();
    
        somenop25();
        
           ewrite_add(0,5);
           somenop25();
           i = eread_add(0);
           somenop25();
           write_7279(0x93,LEDValue[i]);



        ewrite_add(0,4);somenop25();
         ewrite_add(1,5); somenop25();
         ewrite_add(2,1);    somenop25();
         ewrite_add(3,3);    somenop25();

         Buff[0] = eread_add(0);somenop25();
         Buff[1] = eread_add(1);somenop25();
         Buff[2] = eread_add(2);somenop25();
         Buff[3] = eread_add(3);somenop25();
         display(Buff);     




        */
        

      /* 温度显示
       while (1)
       {
            DS1820_Reset(); //复位
            DS1820_WriteData(0xcc); //跳过ROM 命令
            DS1820_WriteData(0x44); //温度转换命令
            DS1820_Reset(); //复位
            DS1820_WriteData(0xcc); //跳过ROM 命令
            DS1820_WriteData(0xbe); //读DS1820 温度暂存器命令
            for (i=0;i<2;i++)
            {
                temperature[i]=DS1820_ReadData(); //采集温度
            }
            DS1820_Reset(); //复位,结束读数据
            displayTemperature(); //显示温度值
            somenop50();
       }*/




      /* 菜单目录
       run();

       
       while(1);
       */

      /*   键盘测试 
       for(i=0;i<8;i++)
       Buff[i] = 0x15; 

      
       while(1)
        {
            display(Buff);
            temp = ReadKey(); //读键值
            if(temp != 0xFF){
                Buff[0] = (temp>>4) & 0x0f;
                Buff[1] = temp & 0x0f;
            }
        }  */
     
      /*    显示字形表
       while(1){
          //write_7279(0x90,0x79);
           //send_byte(0xBF);
          // display(Buff);
       }
         */

}

void Menu(void){
        
        switch(firstmenu){
            
            case 1:{Buff[4] = 28;Buff[5] = 26;Buff[6] = 27;Buff[7] = 29;};break;  //tp-
            case 2:{Buff[4] = 30;Buff[5] = 31;Buff[6] = 32;Buff[7] = 27;};break;  //run-
            case 3:{Buff[4] = 22;Buff[5] = 33;Buff[6] = 32;Buff[7] = 27;};break;  //con-
            case 4:{Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 29;};break;  //pa-
            case 5:{Buff[4] = 26;Buff[5] = 1;Buff[6] = 23;Buff[7] = 27;};break;  //pid-
            default : break;
        }
        //display(DispBuff);     
}

//按键控制
void button(void)
    {
        Key();
        if(KeyNum==1){
                        if(firstmenu==5)firstmenu=1;
                        else firstmenu++;
                    }
    
        if(KeyNum==0){
                        if(firstmenu==1)firstmenu=5;
                        else firstmenu--;
                    }
        if(KeyNum==2){
                        returnFlag = 1;
        }
        if(KeyNum==3)  {
                        switch(firstmenu){
                        case 1:{showTemp();}break;
                        case 2:{returnFlag = 0;choiceLevel();}break;
                        case 3:{motorConfigure();}break;
                        case 4:{if(mm()){configure();}}break;
                        case 5:{pid();}break;
                        default : break;    
                       }
         }  
}



/*
void pid(){
    unsigned char MotorCount1,MotorCount2,MotorCount3,mTnow;
    float u;
    char A,B,C;
    A = 12;
    B = -10;
    C = 0; 
//  u = a*kp*(1+t/PIDA+PIDB/t)-b*kp*(1+2*PIDB/t)+c*kp*PIDB/t;

    TempCount = 15;
    MotorCount1 = eread_add(10);//now-1
    MotorCount2 = eread_add(11);//now-2
    MotorCount3 = eread_add(12);//now
    //mTnow = Buff[4]*1000+(Buff[5]-10)*100+Buff[6]*10+Buff[7];

    returnFlag = 0;

    while(!returnFlag){
    Key();

    if(TempInput == 1 ){
             temper(); 
    
             Buff[4] = Buff[0];
             Buff[5] = Buff[1];
             Buff[6] = Buff[2];
             Buff[7] = Buff[3];
                
             TempInput = 0;

             //sh = 1;
             mTnow = Buff[4]*1000+(Buff[5]-10)*100+Buff[6]*10+Buff[7];
              
    }

    u = A*mTnow/100+MotorCount1*B+MotorCount2*C;

    MotorCount = MotorCount3 + u;

    MotorCount2 = MotorCount1;
    MotorCount1 = MotorCount;

    if(KeyNum == 2){
        returnFlag = 1;
        //MotorCount =0;
        }
    }

    ewrite_add(10,MotorCount1);
    ewrite_add(11,MotorCount2);
    ewrite_add(12,MotorCount3);

}
*/



/*
void run(void){
    clean();
    if(count(0,3,0x93)==0){
      clean();
      KeyCount1 = 0;
    }
    
    func(KeyCount1);
 }

void func(int ifunc){
    switch(ifunc){
        case 0: { 
            Buff[4] = 28;Buff[5] = 26;Buff[6] = 27; display(Buff);
            temper();
            break;
            };  //tp-
        case 1: { 
            Buff[4] = 30;Buff[5] = 31;Buff[6] = 32;Buff[7] = 27; display(Buff);
            KeyCount1 = 1;
            choiceLevel();
            break;};    //run-
        case 2: { 
            Buff[4] = 22;Buff[5] = 33;Buff[6] = 32;Buff[7] = 27; display(Buff);
            motorConfigure();
            break;};    //con-
        case 3: { 
            Buff[4] = 26;Buff[5] = 20;Buff[6] = 27; display(Buff);
            configure();
            break;};    //pa-
        default: 
            run();
    }
}
*/

bit mm(){

    unsigned char m1,m2,m3,m4;
    returnFlag = 0;

    Buff[4] = 27;Buff[5] = 27;Buff[6] = 27;Buff[7] = 27; 
    display(Buff);

    if(!count(0,9,0x94)){
        return returnFlag;
    }else{
            m1 = KeyCount1;
            KeyCount1 = 0;
            Buff[4] = m1;
            display(Buff);
    }
     if(!count(0,9,0x95)){
        return returnFlag;
    }else{
            m2 = KeyCount1;
            KeyCount1 = 0;
            Buff[5] = m2;
            display(Buff);
    }
    if(!count(0,9,0x96)){
        return returnFlag;
    }else{
            m3 = KeyCount1;
            KeyCount1 = 0;
            Buff[6] = m3;
            display(Buff);
    }
    if(!count(0,9,0x97)){
        return returnFlag;  
    }else{
            m4 = KeyCount1;
            KeyCount1 = 0;
            Buff[7] = m4;
            display(Buff);
    }

    if(pass[0]==m1 && pass[1]==m2 && pass[2]==m3 &&pass[3]==m4 ){
        returnFlag = 1;
    }
    return returnFlag;

}


void temper(void){
      unsigned char i;
      
      
            DS1820_Reset(); //复位
            DS1820_WriteData(0xcc); //跳过ROM 命令
            DS1820_WriteData(0x44); //温度转换命令
            DS1820_Reset(); //复位
            DS1820_WriteData(0xcc); //跳过ROM 命令
            DS1820_WriteData(0xbe); //读DS1820 温度暂存器命令
            for (i=0;i<2;i++)
            {
                temperature[i]=DS1820_ReadData(); //采集温度
            }
            DS1820_Reset(); //复位,结束读数据
             
             
            
            displayTemperature(); //显示温度值 存储温度
            
             Buff[0] = eread_add(0);somenop25();
             Buff[1] = eread_add(1)+10;somenop25();
             Buff[2] = eread_add(2);somenop25();
             Buff[3] = eread_add(3);somenop25();
              
            
        //  somenop50();
        //  display(Buff);
            //Key();
            //if(KeyNum==2){
                  //退出
            //}
       
      // Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;



       
        
}





 /*
void motor(void){
    unsigned char i;
    i = 60;  //级别选择
    runMotor(i);    //启动电机并控制返回

    while(1){
        Key();
        if(KeyNum==2){
            run();    
        } 
    }

}
*/
 /*
void runMotor(unsigned char i){
       MotorCount = i*10;
       MotorNow = 0;
       TR0 = 1;

       while(1);


}
*/



void choiceLevel(){
    //KeyCount1 = 1;
    
    while( !returnFlag ){
    if(KeyCount1==10){
    Buff[6] = 1;Buff[7] = 0;
    }else{
    Buff[6] = 29;Buff[7] = KeyCount1;
    }
    Buff[4] = 30;Buff[5] = 27; 
    display(Buff);     //r- num


    if(count(0,10,0x97)==0){
      KeyCount1 = 0;
      returnFlag = 1;
      Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;

    }else{ 
    MotorCount = Level[KeyCount1];
    if( MotorCount/100){
    Buff[1] = MotorCount/100;
    }else{Buff[1] = 29;}
    if( !((MotorCount%100)/10) && Buff[1] == 29){
        Buff[2] = 29;
    }else{Buff[2] = (MotorCount%100)/10;}
    Buff[0] = 29;Buff[3] = MotorCount%10;
    
    }

    }
}





void motorConfigure(void){
    bit sh;
    unsigned int mTnow,mTup,mTdown;
    float mi;
     TempCount = 15;
      returnFlag = 0;
      
      mTup = Tup[0]*1000+Tup[1]*100+Tup[2]*10+Tup[3];
      mTdown = Tdown[0]*1000+Tdown[1]*100+Tdown[2]*10+Tdown[3];

     while (!returnFlag) {
           
        Key();
        if(KeyNum==2){ returnFlag = 1;TempInput = 0;}
    
        if(TempInput == 1 ){
             temper(); 
    
    
             Buff[4] = Buff[0];
             Buff[5] = Buff[1];
             Buff[6] = Buff[2];
             Buff[7] = Buff[3];
                
             TempInput = 0;

             sh = 1;
             mTnow = Buff[4]*1000+(Buff[5]-10)*100+Buff[6]*10+Buff[7];
              
         }
    
        

      if(mTup < mTnow){
            MotorCount = 100;
            Buff[0] = 29;Buff[1] = 1;Buff[2] = 0;Buff[3] = 0;
      }else if(mTdown > mTnow){
            MotorCount = 0;
            Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 0;
      } else if(sh){
            mi =  50 * (mTnow-mTdown)/(mTup-mTdown);
            MotorCount = 50 + mi;
            Buff[0] = 29;Buff[1] = 29;Buff[2] = (MotorCount%100)/10;Buff[3] = MotorCount%10;
      }
      display(Buff);    
    } 
    Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;
    //TempCount = 0;
    KeyNum = 0xff;

}
void configure(void){

    bit secondmenu;
    returnFlag = 0;
    Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 29;
    while(!returnFlag){
    
        Key();
        if(KeyNum==1){ 
                    secondmenu = !secondmenu;
                    }
    
        if(KeyNum==0){
                    secondmenu = !secondmenu;
                    }
        if(KeyNum==2){
                    returnFlag = 1;
        }
        if(KeyNum==3)  {
                        if(secondmenu){
                            parun();
                        }else{
                            pacon();
                        }
        
                       }
        
    
         if(secondmenu){
         
              Buff[1] = 30;Buff[2] = 31;Buff[3] = 32;Buff[0] = 29; //   run
         }else{
              Buff[1] = 22;Buff[2] = 33;Buff[3] = 32;Buff[0] = 29; //   con
         }
        display(Buff);
        } 
    clean();
    
}



void parun(){
       unsigned char mlevelvalue,mlevel ;
      
       returnFlag = 0;

       while(!returnFlag){

        if(KeyCount1==10){
        Buff[6] = 1;Buff[7] = 0;
        }else{
        Buff[6] = 29;Buff[7] = KeyCount1;
        }
        Buff[4] = 26;Buff[5] = 27; 
        display(Buff);     //P- num

        
        if(!count(0,10,0x97)){
          KeyCount1 = 0;
          returnFlag = 1;
    
        }else{ 
            mlevelvalue = Level[KeyCount1];
            
            if( mlevelvalue/100){
            Buff[1] = mlevelvalue/100;
            }else{Buff[1] = 29;}
            if( !((mlevelvalue%100)/10) && Buff[1] == 29){
                Buff[2] = 29;
            }else{Buff[2] = (mlevelvalue%100)/10;}
            Buff[0] = 29;Buff[3] = mlevelvalue%10;
        
            if(KeyCount1==10){
            Buff[6] = 1;Buff[7] = 0;
            }else{
            Buff[6] = 29;Buff[7] = KeyCount1;
            }
            Buff[4] = 20;Buff[5] = 27; 
            display(Buff);     //A- num


             mlevel = KeyCount1;
             KeyCount1 = mlevelvalue;
            if(!count(0,100,0x93)){
                KeyCount1 = 0;
                Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;
             // returnFlag = 1;
    
                }else{ 
            
                Level[mlevel] =  KeyCount1;
                ewrite_add(mlevel+20,KeyCount1);

                KeyCount1 = 0;
                Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;
                }

        }

    }   


        Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 29; //pa- 
        Buff[0] = 29;Buff[1] = 30;Buff[2] = 31;Buff[3] = 32; // run
        returnFlag = 0;
        



}
void pacon(){
     
    bit thirdmenu;
    
    returnFlag = 0;
    while(!returnFlag){
    
        Key();
        if(KeyNum==1){ 
                    thirdmenu = !thirdmenu;
                    }
    
        if(KeyNum==0){
                    thirdmenu = !thirdmenu;
                    }
        if(KeyNum==2){
                    
                    returnFlag = 1;
        }
        if(KeyNum==3)  {
                    if(thirdmenu){
                        paconb();
                    }else{
                        paconf();
                    }
        
                       }
        
    
         if(thirdmenu){
         
             Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 21; //pa-b

             Buff[0] = 29;
             Buff[1] = 29;
             Buff[2] = Tdown[0];
             Buff[3] = Tdown[1];        //Tdown
              
         }else{
              Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 25; //pa-f
              Buff[0] = 29;
              Buff[1] = 29;
              Buff[2] = Tup[0];
              Buff[3] = Tup[1];     //Tup
         }
        display(Buff);
        } 
    Buff[4] = 26;Buff[5] = 20;Buff[6] = 27;Buff[7] = 29;
    returnFlag = 0; 








}



void paconb(){
    Buff[4] = 20;Buff[5] = 27;Buff[6] = 29;Buff[7] = 21; //a- b
    display(Buff);

     
       returnFlag = 0;


         KeyCount1 = Tdown[0]*10+Tdown[1];
        if(!count(0,50,0x93)){
          KeyCount1 = 0;

    
        }else{ 
         Tdown[0]=KeyCount1/10;     
         ewrite_add(4,Tdown[0]);somenop25(); 
         Tdown[1]=KeyCount1%10;
         ewrite_add(5,Tdown[1]);somenop25();
         
        }




}



void paconf(){
    Buff[4] = 20;Buff[5] = 27;Buff[6] = 29;Buff[7] = 25; //a- f
    display(Buff);

     
       returnFlag = 0;


         KeyCount1 = Tup[0]*10+Tup[1];
        if(!count(0,50,0x93)){
          KeyCount1 = 0;

    
        }else{ 
         Tup[0]=KeyCount1/10;       
         ewrite_add(6,Tup[0]);somenop25(); 
         Tup[1]=KeyCount1%10;
         ewrite_add(7,Tup[1]);somenop25();
         
        }
}





void clean(void){
    unsigned char i;
    for(i=0;i<8;i++)
    Buff[i] = 0x1D;
    display(Buff);
}


//返回1确认，0退出
bit count(int min,int max,unsigned char w2){
     bit f,s;
     unsigned char ten;
     ten = 0;
     f  = max/100;
     if(f==0){
        s  = max/10;
     }else{
        s = 1;
     }
     write_7279(0x90,LEDValue[29]);
     
     while(1){
        if( KeyCount1 > max){
          KeyCount1 = min;
        }else if(KeyCount1 < min){
          KeyCount1 = max;
        }
        if(KeyCount1 > 9 && KeyCount1 < 100){
            if(f){write_7279(w2-2,LEDValue[29]);}
            write_7279(w2-1,LEDValue[KeyCount1 / 10]);
            write_7279(w2,LEDValue[KeyCount1 % 10]);
        }else if(KeyCount1 == 100){
            if(f){write_7279(w2-2,LEDValue[1]);}
            write_7279(w2-1,LEDValue[0]);
            write_7279(w2,LEDValue[0]);
        }else{
            if(f){write_7279(w2-2,LEDValue[29]);}
            if(s){write_7279(w2-1,LEDValue[29]);}
            write_7279(w2,LEDValue[KeyCount1]);
        }

        Key();
       
        if(KeyNum == 0){
            KeyCount1--;
            ten=0;
        }else if(KeyNum == 1){
            if(ten == 10){
                KeyCount1+=10;
            }else{
                ten++;
                KeyCount1++;
            }
        }else if(KeyNum == 3){
            return 1;
        }else if(KeyNum == 2){
            return 0;
        }   
        
       
       }

}







void write_7279(unsigned char cmd,unsigned char dta)
{
    CS = 0; 
    somenop50();
    somenop(); 
    send_byte(cmd); 
    somenop25();
    somenop();
    send_byte(dta);
    somenop();
    somenop();
    CS = 1; 
    
    

}



void send_byte(unsigned char cmd)
{
       unsigned char i;
       somenop50();somenop50(); //时序初始延时
       for(i = 0;i < 8;i++)
       {       //写cmd的最高位，  
                if(cmd&0x80) // 最高位为1则写"1"
                DATA = 1; 
                else   // 最高位为0写"0"
                DATA = 0;
                // CLK形成下降沿,先1后0，注意延时时间要满足时序要求
                CLK = 1; somenop10();somenop10();
                CLK = 0; somenop10();somenop10();
                //命令行左移，为写下一个位做准备
                cmd = cmd << 1;       
        }
        DATA = 0;  //依照时序要求全部写完后Data清零 
}


void Init_7279(void)
{ 
    CS = 0; 
    somenop50();somenop50(); 
    send_byte(0xA4); 
    somenop50();somenop50();
    CS = 1; 
}


void display(unsigned char buff[])
{
    unsigned char i,j;
    for( i=0x90,j=0 ; j<=7 ; i++,j++ )
        write_7279(i, LEDValue[buff[j]]);
}



unsigned char ReadKey(void)
{
       unsigned char readkey;
       CS = 0;
       somenop50();somenop50();
       send_byte(0x15);    //读键值命令15H
       somenop25();somenop25();
       readkey = receive_byte(); 
       CS = 1;
       return(readkey);    //返回键值
}



unsigned char receive_byte(void)
{
      unsigned char i, in_byte;
      DATA=1;  
      somenop50();somenop50(); 
      for (i=0;i<8;i++)
      {
              CLK=1;somenop10();somenop10();
              //左移一位，空出最后一位存放新进来的位DATA 
              in_byte=in_byte*2;  
               //若新进来的位DATA为1，则in_byte的末位置1，否则不需要变
              if (DATA)  
                       in_byte=in_byte|0x01;
              CLK=0; somenop10();somenop10();
       }
       DATA=0;
       return (in_byte); //返回接收值
}


/*
void Key(void)
    {
        unsigned char temp,i;
        temp = ReadKey();  //读键值
        if (temp==0xff)
        {
            KeyNum = 0xff;  
            KeyValue = 0xff;
         }
       else
           {
              if(KeyValue!=0xff) 
              KeyNum=0xff;
              else
                   {
                      KeyValue = temp;  
                      for(i=0;i<=3;i++)
                      if (KeyValue == KeyTable[i])
                     { KeyNum = i; break; } 
      }
   }
  } 
    
*/


void Key(void)
{ 
    unsigned char i,temp;
    unsigned int Press_CNT;
    temp = ReadKey();
    if(temp==0xFF){
        KeyNum = 0xFF;
        KeyValue = 0xFF;
    
    }else{
         if(KeyValue!=0xff){ 
             // KeyNum=0xff;
         
            if(Press_CNT < 0xfff)
            {
                Press_CNT ++;  
                KeyNum = 0xFF;
            }
            
            if(Press_CNT >= 500)//调用时间间隔确定
            {
                
                Press_CNT -= 50;
                for(i=0;i<=1;i++){
                if(KeyValue == KeyTable[i]){
                    KeyNum = i;
                    
                    break;
                    }
                }
                
            }
          
        }else{
            KeyValue = temp;
            for(i=0;i<=3;i++){
                if(KeyValue == KeyTable[i]){
                    KeyNum = i;
                    Press_CNT = 0;
                    break;
                }
            }
        } 
      

    }

    
}   


bit DS1820_Reset()
{
bit flag;

DS1820_DQ = 0; //拉低总线

somenop100();somenop100();
somenop100();somenop100();
somenop50();somenop10();
somenop10();somenop10();
DS1820_DQ = 1; //释放总线
somenop50();somenop10();
somenop10();somenop10();
flag = DS1820_DQ; //对数据脚采样
somenop100();somenop100();
somenop100();somenop100();
return (flag);
}


void DS1820_WriteData(U8 wData)
{
    U8 i;
    for (i=8;i>0;i--)
    {
        DS1820_DQ = 0; //拉低总线,产生写信号
        somenop();
        DS1820_DQ = wData&0x01; //发送1 位     
        somenop50();somenop10();
        DS1820_DQ = 1; //释放总线,等待总线恢复
        wData>>=1; //准备下一位数据的传送
    }
}


U8 DS1820_ReadData()
{
    U8 i,TmepData;
    for (i=8;i>0;i--)
    {
        TmepData>>=1;
        DS1820_DQ = 0; //拉低总线,产生读信号
        somenop();
        DS1820_DQ = 1; //释放总线,准备读数据
        somenop();somenop();
        if (DS1820_DQ == 1)
        { TmepData |= 0x80;}
        somenop50(); somenop10();
        DS1820_DQ = 1; //拉高总线,准备下一位数据的读取.
    }
    return (TmepData);//返回读到的数据

}

void displayTemperature(){
//  int Tnow,Told;
    U8 temp_data,temp_data_2;
    U8 temp[7]; //存放分解的7 个ASCII 码温度数据
    U8 TempDec; //用来存放4 位小数
    temp_data = temperature[1];
    temp_data &= 0xf0; //取高4 位
    if (temp_data==0xf0) //判断是正温度还是负温度读数
    {
        //负温度读数求补,取反加1,判断低8 位是否有进位
        if (temperature[0]==0)
        { //有进位,高8 位取反加1
            temperature[0]=~temperature[0]+1;
            temperature[1]=~temperature[1]+1;
        }
        else
        { //没进位,高8 位不加1
            temperature[0]=~temperature[0]+1;
            temperature[1]=~temperature[1];
        }

    }
    temp_data = temperature[1]<<4; //取高字节低4 位(温度读数高4 位)，注意此时是12 位精度
    temp_data_2 = temperature[0]>>4; //取低字节高4 位(温度读数低4 位)，注意此时是12 位精度
    temp_data = temp_data|temp_data_2; //组合成完整数据
    //temp[0] = temp_data/100; //取百位转换为ASCII 码
    temp[1] = (temp_data%100)/10; //取十位转换为ASCII 码
    temp[2] = (temp_data%100)%10; //取个位转换为ASCII 码
    temperature[0]&=0x0f; //取小数位转换为ASCII 码
    TempDec = temperature[0]*6.25; //625=0.0625*10000，表示小数部分,扩大1 万倍 ，方便显示
    temp[3] = (TempDec %100)/10; //取小数十分位转换为ASCII 码
    temp[4] =  TempDec % 10; //取小数百分位转换为ASCII 码
    
    
    /*Buff[0] = temp[1];Buff[1] = temp[2]+10;Buff[2] = temp[3];Buff[3] = temp[4]; 
    display(Buff);  */
        //if(temp[1]<4 && temp[1] > 0){
        //Tnow = temp[1]*1000+temp[2]*100+temp[3]*10+temp[4];   
        //Told = eread_add(0)*1000+eread_add(1)*100+eread_add(2)*10+eread_add(3);
        //if(!(Tnow - Told >= 100 || Told - Tnow <= 100)){
          if(temp[1]<4 && temp[1] > 0){
             ewrite_add(0,temp[1]);  somenop25();
             ewrite_add(1,temp[2]);  somenop25();
             ewrite_add(2,temp[3]);  somenop25();
             ewrite_add(3,temp[4]);  somenop25();
          }
      // }
      //}
    //display(Buff);


    /*


    
//  temp[5] = ((TempDec%1000)%100)/10+0x30;//取小数千分位转换为ASCII 码
//  temp[6] = ((TempDec%1000)%100)%10+0x30;//取小数万分位转换为ASCII 码


    if(temp[0]==0x30) DisplayChar(3,0,' ');//如果百位为0，显示空格
    else DisplayChar(3,0,temp[0]); //否则正常显示百位
    DisplayChar(4,0,temp[1]);//十位
    DisplayChar(5,0,temp[2]);//个位
    DisplayChar(6,0,0x2e); //小数点 .
    DisplayChar(7,0,temp[3]);
    DisplayChar(8,0,temp[4]);
    DisplayChar(9,0,temp[5]);
    DisplayChar(10,0,temp[6]);
    DisplayChar(11,0,'\''); //显示'
    DisplayChar(12,0,'C'); //显示C

    */

}


void showTemp(){
     TempCount = 15;
     returnFlag = 0;
     while (!returnFlag) {
           
    Key();
    if(KeyNum==2){ returnFlag = 1;TempInput = 0;}

    if(TempInput == 1 ){
         temper(); 
            
         TempInput = 0;
     }

    display(Buff);  
    } 
    Buff[0] = 29;Buff[1] = 29;Buff[2] = 29;Buff[3] = 29;
    //TempCount = 0;
    //TempInput = 0;

}




void estart() //起始信号 当时钟线为1，数据线有个下降沿
{   
    ECLK=1;
    EDTA=1;
    somenop();
    EDTA=0; 
    ECLK=0;
    somenop();
}

void estop()//终止信号 当时钟线为1，数据线有个上升沿
{
    EDTA=0;
    ECLK=1;
    somenop();
    EDTA=1;
    ECLK=0;
    somenop();
}

bit ack() //应答信号由从机发出信号为sda由1变为0
{
    
    ECLK=1;
    EDTA=1;
    if(EDTA==1){
        ECLK=0;
        return 1;
    }else{
        ECLK=0;
        return 0;
    }
    
}

void init_24c16()//24c16初始化
{
    EDTA=1;
    somenop();
    ECLK=1;
    somenop();
}

void ewrite_byte(unsigned char dat) //字节写（写数据或地址）数据线sda不变，scl有个上升沿，写入数据
{
    unsigned char i;
    for(i=0;i<8;i++)
    {
        ECLK=0;
        somenop();
        EDTA=dat&0x80;
        somenop();
        ECLK=1;
        somenop();
        dat <<= 1;
    }
    ECLK=0;
    somenop();
}

unsigned char eread_byte() //字节读 scl有下降沿读出
{
    unsigned char i,k;
    for(i=0;i<8;i++)
    {
    ECLK=1;
    somenop();
    k=(k<<1)|EDTA;
    ECLK=0;
    somenop();
    }
    return k;
}

void ewrite_add(unsigned char add,unsigned char dat)
{
    do{
    estart();
    ewrite_byte(0xa0);
    }
    while(ack());
    
    ewrite_byte(add);
    ack();
    do{
    ewrite_byte(dat);
    }
    while(ack());
    estop();
}

unsigned char eread_add(unsigned char add)
{
    unsigned char dat;

    do{
    estart();
    ewrite_byte(0xa0);
    }
    while(ack());
    
    ewrite_byte(add);
    ack();

    
    do{
    estart();
    ewrite_byte(0xa1);
    }
    while(ack());

    dat=eread_byte();
    estop();
    return dat;
}






void pid(){
    unsigned char mTnow;
    
    TempCount = 15;

    returnFlag = 0;
    
    while(!returnFlag){
    
    if(TempInput == 1 ){
             temper(); 
    
             Buff[4] = Buff[0];
             Buff[5] = Buff[1];
             Buff[6] = Buff[2];
             Buff[7] = Buff[3];
                
             TempInput = 0;

            
             mTnow = Buff[4]*10+(Buff[5]-10);

             e1 = mTnow - Tset;

             duk = (kp+ki+kd)*e1 - (kp + 2*kd)*e2 + kd * e3;
             MotorCount = MotorCount + duk;
             if(MotorCount > 100) MotorCount = 100;
             else if (MotorCount < 50) MotorCount = 50;

             e2 = e1;
             e3 = e2;

             if( MotorCount == 100){
                Buff[4] = 29;
                Buff[5] = 1;
                Buff[6] = 0;
                Buff[7] = 0;
            }else{
                Buff[4] = 29;
                Buff[5] = 29;
                Buff[6] = MotorCount/10;
                Buff[7] = MotorCount%10;
            }
            
            
    }
    display(Buff);
    Key();  
    if(KeyNum == 2){
         returnFlag = 1;
         Buff[0] = 29;
         Buff[1] = 29;
         Buff[2] = 29;
         Buff[3] = 29;
         display(Buff);
         MotorCount = 0;
         TempInput = 0;
         //TempCount = 0;
        }

    }

}
/*
void pid(){
    unsigned char MotorCount1,MotorCount2,MotorCount3,mTnow;
//  int e1,e2,e3;
    char A,B,C;
    bit sh;
//  e1 = 0;
//  e2 = 0;
//  e3 = 0;
    A = 12;
    B = -10;
    C = 0; 
//  u = a*kp*(1+t/PIDA+PIDB/t)-b*kp*(1+2*PIDB/t)+c*kp*PIDB/t;

    TempCount = 15;
    MotorCount1 = eread_add(10);//now-1
    MotorCount2 = eread_add(11);//now-2
    MotorCount3 = eread_add(12);//now
    //mTnow = Buff[4]*1000+(Buff[5]-10)*100+Buff[6]*10+Buff[7];
    //Tset = eread_add(13);
    returnFlag = 0;
    
    while(!returnFlag){
    Key();  
    if(KeyNum == 2){
         returnFlag = 1;
         Buff[4] = 29;
         Buff[5] = 29;
         Buff[6] = 29;
         Buff[7] = 29;
         display(Buff);
        //MotorCount =0;
        }
    if(TempInput == 1 ){
             temper(); 
    
             Buff[4] = Buff[0];
             Buff[5] = Buff[1];
             Buff[6] = Buff[2];
             Buff[7] = Buff[3];
                
             TempInput = 0;

            
             mTnow = Buff[4]*10+(Buff[5]-10);
              
        
            MotorCount = MotorCount3 + A*mTnow+MotorCount1*B+MotorCount2*C - Tset;
        
            if( MotorCount/10 > 9){
                Buff[4] = 29;
                Buff[5] = 1;
                Buff[6] = 0;
                Buff[7] = 0;
            }else if(MotorCount/10 < 3){
                Buff[4] = 29;
                Buff[5] = 29;
                Buff[6] = 3;
                Buff[7] = 0;
            }else{
                Buff[4] = 29;
                Buff[5] = 29;
                Buff[6] = MotorCount/10;
                Buff[7] = MotorCount%10;
            }
            
            
    }
    display(Buff);

    MotorCount2 = MotorCount1;
    MotorCount1 = MotorCount;

    
    }
    
    ewrite_add(10,MotorCount1);
    ewrite_add(11,MotorCount2);
    ewrite_add(12,MotorCount3);

}

*/

void timer0(void) interrupt 1 using 3
{
    TH0 = 0xFC;
    TL0 = 0x66;

    if(MotorNow < MotorCount){
        Motor = 1;
        MotorNow++;
        P2  =  0x00;
    }else if(MotorNow >= MotorCount && MotorNow <= 100){ 
         Motor = 0;
         P2 = 0x02;
         MotorNow++;
     }else{
        MotorNow=0;
     }
}




void timer1(void) interrupt 3 using 2
{
    TH0 = 0xDC;
    TL0 = 0x00;


    if(TempNow != TempCount){
    
        TempNow++;
        
    }else if(TempNow >= TempCount && TempNow != 0){ 
        
         TempInput = 1;
         TempNow = 0;
     }

     
}

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