单片机热敏电阻测温查表程序

1、1. #include<reg51.h>    2. #include"LCD.h"    3. #define uchar unsigned char    4. #define uint unsigned int    5. #define N 10    6. uchar bai,ge,shi,n;  

2、; 7. uint temp,tp;temph,templ;   8. uint code ad_date=    9.     1060,1060,1060,1100,1120,1140,1166,1180,1200,1220,   10.     1240,1320,1340,1360,1380,1400,1420,1440,1460,1480,  &#

3、160;11.     1500,1520,1540,1560,1580,1600,1620,1640,1660,1680,   12.     1700,1720,1740,1760,1780,1800,1820,1840,1840,1860,   13.     1880,1900,1920,1940,1960,1980,2000,2020,2040,2060,   14. 

4、0;   2080,2100,2120,2140,2160,2180,2200,2220,2240,2260,   15.     2280,2300,2320,2340,2360,2380,2400,2420,2440,2460,   16.     2480,2500,2520,2540,2560,2580,2600,2620,2640,2660,   17.   

5、0; 2680,2700,2720,2740,2760,2780,2800,2820,2840,2860,   18.     2880,2900,2920,2920,2940,2960,2980,3000,3020,3040,   19.     3060,3080,3100,3120,3140,3160,3180,3200,3220,3240,   20.     3260

6、,3280,3300,3320,3340,3360,3380,3400,3420,3440,   21.     3460,3480,3500,3520,3540,3560,3580,3600,3620,3640,   22.     3660,3680;   23. uint code temperiture=   24.     59

7、4,593,586,580,579,560,564,559,552,545,   25.     541,518,513,508,503,497,491,488,483,480,   26.     473,468,463,458,455,451,447,440,434,433,   27.     430,425,420,416,413,409,404,401,401,396,

8、0;  28.     390,386,382,378,374,372,368,364,361,357,   29.     354,351,347,343,340,336,333,328,326,322,   30.     319,316,313,309,307,303,300,296,294,289,   31.     

9、286,283,280,276,274,271,267,264,260,257,   32.     253,249,246,243,240,237,233,231,228,224,   33.     222,219,214,216,211,209,206,202,198,194,   34.     187,184,181,178,175,171,168,164,161,158,&#

10、160;  35.     154,152,148,146,142,139,136,133,130,126,   36.     124,121,116,114,112,108,102,98,96,94,   37.     89,86;   38. uchar code table="  T:00.0C"&

11、#160;  39. uchar num=0;   40. uchar keynum,max=40,min=0;   41. uchar code Temp_max="  Max:40C",Temp_min="  Min:00C"   42.    43. sbit ad_wr=P36;   44.

12、 sbit ad_rd=P37;   45. sbit ad_cs=P35;   46. sbit ad_int=P32;   47. sbit key1=P05;   48. sbit key2=P06;   49. sbit key3=P07;   50. /sbit Beep=P00;    51.  

13、  52. /*函数表*/   53. void init();                    /初始化    54. void ad_delay(uint t);          

14、;/延时函数    55. void change(uchar tempture);    /分离百位、十位、个位    56. uchar ad_getshuju();                /ad转换    57. char filter(); &

15、#160;                /滤波    58. uint convert();                 /电压转换    59. void tempertur();&

16、#160;              /度温度    60. void keyscan();                 /键盘扫描    61.    62. /主函数  &

17、#160; 63. void main()   64.    65.     init();   66.     while(1)   67.        68.         keyscan();  &#

18、160;  69.           70.    71.    72. void init()   73.    74.     LCD_init();   75.     for(num=0;num<10;num+) 

19、  76.        77.         LCD_Write_add_data(num,0,tablenum);   78.        79.    80.    81. void ad_delay(uint t)  

20、 82.    83.     uchar j;   84.     uint i;   85.     for(i=0;i<t;i+)   86.         for(j=0;j<110;j+);   

21、87.    88.    89. uchar ad_getshuju()   90.    91.     uchar date;   92.     ad_cs=0;ad_wr=0;ad_rd=1;   93.     ad_cs=1;ad_wr=1;ad_rd=1;

22、0;  94.     while(ad_int=1);   95.     ad_cs=0;ad_wr=1;ad_rd=0;   96.     date=P2;   97.     ad_cs=1;ad_wr=1;ad_rd=1;   98.     re

23、turn date;   99.    100.    101. char filter() /滤波函数  中位值滤波法    102.    103.    uint value_bufN,temp_f;   104.    uchar count,i,j;  

24、60;105.    for ( count=0;count<N;count+)   106.       107.       value_bufcount = ad_getshuju();   108.       delay(2);   109.

25、      110.    for (j=0;j<N-1;j+)   111.       112.       for (i=0;i<N-j;i+)   113.          114.  &

26、#160;       if ( value_bufi>value_bufi+1 )   115.             116.             temp_f = value_bufi;

27、60;  117.             value_bufi = value_bufi+1;   118.              value_bufi+1 = temp_f;   119.   

28、0;         120.          121.       122.    return value_buf(N-1)/2;   123.    124.    125. uint convert()

29、0;  126.     127.     uint temph,templ;       /用于存储读出数据的高字节和低字节     128.     uint tmp="0"           

30、/存储最后处理完的结果 注意数据类型     129.     tmp=filter()+tmp;                   /求滤波后ad值     130.     temph=tmp&0xf0;  

31、;               /屏蔽低四位     131.     temph=temph>>4;               /右移四位 取出高四位    

32、60;132.     templ=tmp&0x0f;                 /屏蔽高四位 取出低四位     133.     tmp=templ*20+temph*320;         

33、;/最后的结果是一个四位数，便于显示   电压值    134.     return tmp;                     /返回最后处理结果     135.    136.  

34、60; 137. void change(uchar tempture)   138.    139.     bai=tempture/100;   140.     shi=tempture%100/10;   141.     ge=tempture%10;   142.  

35、0; 143.    144. void tempertur()   145.    146.     for(n=0;temp>=ad_daten;n+);   147.     tp=temperituren-1;   148.     change(tp);   14

36、9.     LCD_Write_add_data(4,0,0x30+bai);   150.     LCD_Write_add_data(5,0,0x30+shi);   151.     LCD_Write_add_data(7,0,0x30+ge);   152.    153.    154.   

37、 155. void keyscan()   156.    157.     if(key1=0)   158.        159.         delay(5);   160.       

38、0; if(key1=0)   161.            162.             while(!key1);   163.             keynum+;

39、   164.             if(keynum=1)   165.                166.             

40、60;   change(max);   167.                 LCD_Write_Com(0x01);   168.                 delay(10)

41、;   169.                 LCD_Write_add_str(0,0,10,Temp_max);   170.                 LCD_Write_add_data(6,0,0x3

42、0+shi);   171.                 LCD_Write_add_data(7,0,0x30+ge);   172.                173.     

43、        if(keynum=2)   174.                175.                 change(min);  &#

44、160;176.                 LCD_Write_Com(0x01);   177.                 min=min>0?min:0;   178.   &#

45、160;             delay(10);   179.                 LCD_Write_add_str(0,0,10,Temp_min);   180.      &

46、#160;          LCD_Write_add_data(6,0,0x30+shi);   181.                 LCD_Write_add_data(7,0,0x30+ge);   182.     

47、0;          183.             if(keynum=3)   184.                185.      &

48、#160;          keynum=0;   186.                 LCD_Write_Com(0x01);   187.           

49、0;     delay(10);   188.                 LCD_Write_add_str(0,0,10,table);   189.               

50、 190.            191.        192.     if(keynum=0)   193.        194.         temp=convert();&#

51、160;  195.         tempertur();   196.         delay(100);   197.        198.     else   199.   

52、0;    200.         if(keynum=1)   201.            202.             if(key2=0)   203.  

53、0;             204.                 delay(5);   205.               

54、60; if(key2=0)   206.                    207.                     while(!key2); 

55、  208.                     max+;   209.                     change(max);

56、60;  210.                     delay(1);   211.                    212.  

57、60;             213.             if(key3=0)   214.                215.   &#

58、160;             delay(5);   216.                 if(key3=0)   217.          

59、60;                                218.                 

60、0;   while(!key3);   219.                     max-;   220.                 

61、    change(max);   221.                     delay(1);   222.                

62、;    223.                224.             /LCD_Write_add_str(0,0,9,Temp_max);    225.        &#

63、160;    LCD_Write_add_data(6,0,0x30+shi);   226.             LCD_Write_add_data(7,0,0x30+ge);   227.            228.    

64、     if(keynum=2)   229.            230.             if(key2=0)   231.           

65、;     232.                 delay(5);   233.                 if(key2=0)   234.  &

66、#160;                 235.                     while(!key2);   236.      &#

67、160;              min+;   237.                     change(min);   238.      

68、;               min=min>0?min:0;   239.                     delay(1);   240.