temp3.c

实现单片机对温度的控制

					//
		//							//
		//	Function:	Test Temperature.-30~+105	//
		//			Used Equation 			//
		//		RT/R25=e(B*((1/(T+273))-(1/298)))	//
		//							//
		//	Change List:	V0.9 -> V0.91	(07,02)		//
		//			Change display A error		//
		//							//
		//			V0.91 -> V0.92	(07,03)		//
		//			Add Temp Tab jiaozheng 70~100C	//
		//							//
		//******************************************************//
		
		#include	"ADUC812.h"
		#include	"math.h"
		#include	"intrins.h"
		#include	"string.h"
		#include	"stdio.h"
		#include	"dada.h"
		
		bdata unsigned char LCD_data[8];    			//** Display Buffer **//
		int	ssdata[3];
		
		#define	Temp_100	235
		#define	Temp_40		1352
		
		sbit	s_data  = P2^0;         			//** LCD Serial Data Port **//
		sbit 	clk_lcd = P2^2;         			//** LCD Clock Port **//
		sbit 	lcd_cs  = P2^1;         			//** LCD Chip Select Port **//

		sbit	led		=P2^7;

		//********** LCD Command Name Define ***********//
		#define cmd_off 0x00            			//** LCD Control Power Down **//
		#define cmd_on 0x01             			//** LCD Control Power Up **//
		#define cmd_LCD_off 0x02        			//** Close LCD **//
		#define cmd_LCD_on 0x03         			//** Open LCD **//
		#define cmd_LCD_B3C4 0x29       			//** LCD Mode 1/3BAIS,1/4DUTY **//
		#define cmd_LCD_RC 0x18         			//** LCD Control Internal Oscillator 256K **//
		
	//	data unsigned char Comm_buff[16];  			//** Serial Port Receiver Buffer **//
		//data unsigned char Comm_len;       			//** Serial Port Receiver Data Length **//
		//bit Comm_ready;                   			//** Serial Port Receiver Flag **//


		//** LCD Code 0,1,2...A,B,F,0.,1.,...A.,B.,F. **//
		unsigned char code LCD_code[] = 
		{
		0xeb,0x60,0xc7,0xe5,0x6c,0xad,0xaf,0xe0,0xef,0xed,0xee,0x2F,0x8b,0x67,0x8F,0x8e,
   		0xfb,0x70,0xd7,0xf5,0x7c,0xbd,0xbf,0xf0,0xff,0xfd,0xfe,0x3f,0x9b,0x77,0x9f,0x9e,
   		0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
   		};
   		
		//****************** delay *********************//
		void Delay(int p)				//** Delay p Clock Cycle **//
		{
			int j;
			for(j=0;j<=p;j++)
			{
				_nop_();
			}
		}
		
		//************* Delay N ms *********//	
		void Delay_ms(int n)
		{
			int	i,j;
			for(i=0;i<=n;i++)
			{
				for(j=0;j<=52;j++)			//** Delay 1 ms **//
				{
					_nop_();
				}
			}
		}
								
		//************* LCD Data Display ****************//
		void LCD_Display()
		{
   			unsigned char data i,j,k,tmp,tmp1,tmp2;

   			//** Write 'Writr Mode' Command Word '101' **//
 			lcd_cs = 0;				//** Chip Select Enable **//
   			Delay(100);
			
			clk_lcd = 0;       			//** Clock Down Edge **//
   			s_data  = 1;				//** Data '1' **//
   			clk_lcd = 1;       			//** Clock Up Edge **//

   			clk_lcd = 0;       			//** Clock Down Edge **//
   			s_data  = 0;				//** Data '0' **//
   			clk_lcd = 1;       			//** Clock Up Edge **//

   			clk_lcd = 0;       			//** Clock Down Edge **//
   			s_data  = 1;				//** Data '1' **//
   			clk_lcd = 1;       			//** Clock Up Edge **//

   			s_data = 0;
   			for(i=0; i<6; i++)   			//** Write First Address '00000'(A5-A0) **//
   			{
     				 clk_lcd = 0;      		//** Clock Down Edge **//
     				 s_data  = 0;			//** Data '0' **//
     				 clk_lcd = 1;      		//**Clock Up Edge **//
   			}
   			
   			for(i=0; i<8; i++)   			//** 8 Bits Display Data **//
   			{
    				k=8;    
     				tmp = LCD_data[i];
     				tmp1 = tmp&0xf0;     		//** High 4 Bits **//
     				tmp2 = tmp&0x0f;     		//** Low 4 Bits **//
     				
     				//** Data Bits Write Out From M to L **//
     				for(j=0; j<k; j++)
     				{
        				clk_lcd = 0;      	//** Clock Down Edge **//
					if(tmp & 0x80)    		//** Data Out **//
           					s_data = 1;
        				else
           					s_data = 0;
        				clk_lcd = 1;      	//** Clock up Edge **//
       					 tmp = tmp << 1;   	//** Data << 1 Bit **//
     				}
   			}
   			lcd_cs = 1;            			//** LCD Chip Select Disable *8//
		}
								
		//************** LCD Command Write *************//
		void LCD_CMD(unsigned char cmd)
		{
   			unsigned char data i;

   			//*** Write Command Control Word 100 ***//
   			lcd_cs = 0;				//** Chip Enable **//
     		Delay(100);
     			
   			clk_lcd = 0;    			//** Clock Up Edge **//
   			s_data  = 1;				//** Data '1' **//
   			clk_lcd = 1;    			//** Clock Down Edge **//

   			clk_lcd = 0;    			//** Clock Up Edge **//
   			s_data  = 0;				//** Data '0' **//
  			clk_lcd = 1;    			//** Clock Down Edge **//

   			clk_lcd = 0;    			//** Clock Up Edge **//
   			s_data  = 0;				//** Data '0' **//
   			clk_lcd = 1;    			//** Clock Down Edge **//

   			//** Write Command Word Bits From M to L,Add One Bit(hardware need) **//
   			for(i=0; i<9; i++)
   			{
      				clk_lcd = 0;     		//** Clock Down Edge **//
      				if(cmd & 0x80)			
         			s_data = 1;
      				else
         			s_data = 0;			//** Data Write **//
      				clk_lcd = 1;     		//** Clock Up Edge **//
      				cmd = cmd << 1;    		//** Command Data <<1 Bit **//
   			}

   			lcd_cs = 1;         			//** Chip Select disable **// 
		}
			
		//******** Display *****************//
		void Display(float TT)
		{
			int con1=0,con2=0,con3=0,con4=0,con5=0,con6=0,dd=0,ss=0;
			long tt6;

			dd=TT*100;
			if(dd<0)
			{
				dd=abs(dd);
				LCD_data[7]=0x04;		//** +&- **//
			}
			else
			{
				LCD_data[7]=0x00;
			}

			ss=dd;
			con5=ss%10;
			
			ss=dd/10;
			con4=ss%10;
			
			ss=dd/100;
			con3=ss%10;
			
			ss=dd/1000;
			con2=ss%10;
			
			ss=dd/10000;
			con1=ss%10;
			
			tt6=TT*1000;
			dd=tt6%10;
			if(dd>=5)
			{
				con5=con5+1;
				if(con5>9)			//** V0.9 -> V0.91 chang dispaly A error **//
				{
					con5=0;
					con4=con4+1;
					if(con4>9)
					{
						con4=0;
						con3=con3+1;
						if(con3>9)
						{
							con3=0;
							con2=con2+1;
							if(con2>9)
							{
								con2=0;
								con1=con1+1;
							}
						}
					}
				}						//*** V0.91 end ******//
			}

			//LCD_data[7]=//LCD_code[];			//** LCD Data **//
			LCD_data[6]=LCD_code[con1];
			LCD_data[5]=LCD_code[con2];
			LCD_data[4]=LCD_code[con3+0x10];
			LCD_data[3]=LCD_code[con4];
			LCD_data[2]=LCD_code[con5];
			LCD_data[1]=0xcc;//LCD_code[com2];
			LCD_data[0]=0x8b;//LCD_code[com1];
			LCD_Display();
		}

		//*************** Clear LCD ********************//
		void Clear_LCD()
		{
			LCD_data[0] = 0x00;
   			LCD_data[1] = 0x00;
   			LCD_data[2] = 0x00;
   			LCD_data[3] = 0x00;
   			LCD_data[4] = 0x00;
   			LCD_data[5] = 0x00;
   			LCD_data[6] = 0x00;
   			LCD_data[7] = 0x00;
   			LCD_data[8] = 0x00;   
   			LCD_Display();
		}

		//***************** LCD Inital *****************// 
		void Inital_LCD(void)
  		{
    			LCD_CMD(cmd_off);          		//** Close LCD System Oscillator **//
    			LCD_CMD(cmd_LCD_off);      		//** Close LCD Bisa Control **//
    			LCD_CMD(cmd_LCD_RC);    		//** Start internal RC Oscillator **//
       			LCD_CMD(cmd_on);        		//** Open LCD System Oscillator **//
    			LCD_CMD(cmd_LCD_on);  			//** Open LCD Bisa Control **//
    			LCD_CMD(cmd_LCD_B3C4);   		//** Set Mode 1/3BAIS,1/4DUTY **//
  		}  
		
		//****** Serial Port set *******//
		void Inital_Serial(void)
		{
			SCON=0x52;			//** Serial Mode 1 **//
			TMOD=0x21;			//** T1 Mode 2 **//
			TH1=0xFD;
			TL1=0xFD;			//** Baud 9600 **//
			TR1=1;				//** Start T1 **//
			TI=1;				//** Open Int T1 **//
			EA=1;				//** Open All Int **//
		}
		
		//********** LCD Check *********//
		LCD_Check()
		{
			int	i;
			for(i=0;i<5;i++)
			{
				Clear_LCD();
				led=1;
				Delay_ms(500);
				LCD_data[7]=0xFF;			//** LCD Data = FF **//
				LCD_data[6]=0xFF;
				LCD_data[5]=0xFF;
				LCD_data[4]=0xFF;
				LCD_data[3]=0xFF;
				LCD_data[2]=0xFF;
				LCD_data[1]=0xFF;
				LCD_data[0]=0xFF;
				LCD_Display();
				led=0;
				Delay_ms(500);
			}
		}
		
		//************** AD Inital *************//
		void AD_Set(void)
		{
			 ADCCON1=0x7C;			//** Start ADC,Clock=CK/8,8Clock **//
			 ADCCON2=0x21;			//** serial ADC, Port 4 **//
			 Delay(100);
		}
		
		//********************************** Main Program *************************************//
		void main(void)
		{
			int	Data;
			int	i,j,Channel;
			float Sum;
			float Temp;
			
			//****** Inital Set *****//
			Inital_Serial();
			Inital_LCD();
			LCD_Check();
			
			AD_Set();
			
			//******* Start *************//
			while(1)
			{
				Channel=ADCDATAH>>4;
				if(Channel==0x01)
				{
					Sum=0;
					for(i=0;i<100;i++)
					{
						Data=ADCDATAL|((ADCDATAH&0x0F)<<8);
					//	printf("%d\n",Data);
						Sum=Sum+Data;
					}
				
					Sum=Sum/100.0;
				//	Sum=1800.0;			//*** V0.91 -> V0.92 ADD check Tab **//
					if(Sum<=Temp_40)
					{
						if(Sum>=Temp_100)
						{
							for(i=0;i<75;i++)
							{
								if(Sum<=ADC_Data[i])
								{
									j=i;	
								}
							}

							Temp=Temp_Tab[j]+((Temp_Tab[j+1]-Temp_Tab[j])*(ADC_Data[j]-Sum)/(ADC_Data[j]-ADC_Data[j+1]));
						}					//** V0.92 change end **//
					}
					else
					{
						Temp=1.0/((log(Sum/2250.0))/3470.0+(1.0/298.0))-273.0;
					
					}	
					Delay(50);
				}
				//Temp=101.372;
			
				printf("temperature=%.1f\n",Temp);
				Delay_ms(900);	
				Display(Temp);
				Delay(20);
			}
			
			
		}