51单片机热敏电阻测温查表程序

1. #include 2. #include\

3. #define uchar unsigned char 4. #define uint unsigned int 5. #define N 10 6. uchar bai,ge,shi,n; 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, 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. 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. 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. 3260,3280,3300,3320,3340,3360,3380,3400,3420,3440, 21. 3460,3480,3500,3520,3540,3560,3580,3600,3620,3640, 22. 3660,3680};

23. uint code temperiture[]={

24. 594,593,586,580,579,560,564,559,552,545, 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, 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. 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, 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[]=\; 39. uchar num=0;

40. uchar keynum,max=40,min=0;

41. uchar code Temp_max[]=\,Temp_min[]=\; 42.

43. sbit ad_wr=P3^6; 44. sbit ad_rd=P3^7;

45. sbit ad_cs=P3^5; 46. sbit ad_int=P3^2; 47. sbit key1=P0^5; 48. sbit key2=P0^6; 49. sbit key3=P0^7; 50. //sbit Beep=P0^0; 51.

52. /*********函数表************/

53. void init(); //初始化 54. void ad_delay(uint t); //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(); //滤波 58. uint convert(); //电压转换 59. void tempertur(); //度温度 60. void keyscan(); //键盘扫描 61.

62. //主函数 63. void main() 64. {

65. init(); 66. while(1) 67. {

68. keyscan(); 69. } 70. } 71.

72. void init() 73. {

74. LCD_init();

75. for(num=0;num<10;num++) 76. {

77. LCD_Write_add_data(num,0,table[num]); 78. } 79. } 80.

81. void ad_delay(uint t) 82. {

83. uchar j; 84. uint i;

85. for(i=0;i

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; 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. return date; 99. } 100.

101. char filter() //滤波函数 中位值滤波法 102. {

103. uint value_buf[N],temp_f; 104. uchar count,i,j;

105. for ( count=0;count

107. value_buf[count] = ad_getshuju(); 108. delay(2); 109. }

110. for (j=0;j

112. for (i=0;i

114. if ( value_buf[i]>value_buf[i+1] ) 115. {

116. temp_f = value_buf[i];

117. value_buf[i] = value_buf[i+1]; 118. value_buf[i+1] = temp_f; 119. } 120. } 121. }

122. return value_buf[(N-1)/2]; 123. } 124.

125. uint convert() 126. {

127. uint temph,templ; //用于存储读出数据的高字节和低字节 128. uint tmp=\; //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; //屏蔽低四位 131. temph=temph>>4; //右移四位 取出高四位 132. templ=tmp&0x0f; //屏蔽高四位 取出低四位

133. tmp=templ*20+temph*320; //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.

137. void change(uchar tempture) 138. {

139. bai=tempture/100; 140. shi=tempture0/10; 141. ge=tempture; 142. } 143.

144. void tempertur() 145. {

146. for(n=0;temp>=ad_date[n];n++); 147. tp=temperiture[n-1]; 148. change(tp);

149. 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.

155. void keyscan() 156. {

157. if(key1==0) 158. {

159. delay(5); 160. if(key1==0) 161. {

162. while(!key1); 163. keynum++; 164. if(keynum==1) 165. {

166. change(max);

167. LCD_Write_Com(0x01); 168. delay(10);

169. LCD_Write_add_str(0,0,10,Temp_max); 170. LCD_Write_add_data(6,0,0x30+shi); 171. LCD_Write_add_data(7,0,0x30+ge); 172. }

173. if(keynum==2) 174. {

175. change(min);

176. LCD_Write_Com(0x01); 177. min=min>0?min:0; 178. delay(10);

179. LCD_Write_add_str(0,0,10,Temp_min); 180. LCD_Write_add_data(6,0,0x30+shi); 181. LCD_Write_add_data(7,0,0x30+ge); 182. }

183. if(keynum==3) 184. {

185. keynum=0;

186. LCD_Write_Com(0x01); 187. delay(10);

188. LCD_Write_add_str(0,0,10,table); 189. } 190. } 191. }

192. if(keynum==0) 193. {

194. temp=convert(); 195. tempertur(); 196. delay(100); 197. } 198. else 199. {

200. if(keynum==1) 201. {

202. if(key2==0) 203. {

204. delay(5); 205. if(key2==0) 206. {

207. while(!key2); 208. max++; 209. change(max); 210. delay(1); 211. } 212. }

213. if(key3==0) 214. {

215. delay(5); 216. if(key3==0)

217. { 218. while(!key3); 219. max--;

220. change(max); 221. delay(1); 222. } 223. }

224. //LCD_Write_add_str(0,0,9,Temp_max); 225. LCD_Write_add_data(6,0,0x30+shi); 226. LCD_Write_add_data(7,0,0x30+ge); 227. }

228. if(keynum==2) 229. {

230. if(key2==0) 231. {

232. delay(5); 233. if(key2==0) 234. {

235. while(!key2); 236. min++; 237. change(min); 238. min=min>0?min:0; 239. delay(1); 240. } 241. }

242. if(key3==0) 243. {

244. delay(5); 245. if(key3==0) 246. {

247. while(!key3); 248. min--; 249. change(min); 250. delay(1); 251. } 252. }

253. //LCD_Write_add_str(0,0,9,Temp_min); 254. LCD_Write_add_data(6,0,0x30+shi); 255. LCD_Write_add_data(7,0,0x30+ge); 256. } 257. } 258. }

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