低成本m48+熱敏電阻做的多路溫度顯示及音樂警報裝置

電路圖:

1. 
   
2. // icc 6.31a , atmage48, 8m osc
   
3. #include <iom48v.h>
   
4. #include <macros.h>
   
5. #include <stdio.h>
   
6. #include <eeprom.h>
   
7. 
   
8. #define uchar unsigned char
   
9. #define uint unsigned int
   
10. 
    
11. #define LED_NUM    PORTD
    
12. #define LED_VALUE  PORTB
    
13. #define ADC_KEY    5
    
14. #define SOUND_OUT  0x04
    
15. #define DELAY_MIN  1100
    
16. 
    
17. uint v = 0;
    
18. uchar adc_channel = 0;
    
19. uchar hot_warning[4]={30,35,40,45};
    
20. uchar setting_mode = 0;
    
21. uchar auto_mode = 0x00;
    
22. 
    
23. const uchar disp_table[22] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
    
24. 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40,0x01,0x02,0x04,0x08,0x10};
    
25. 
    
26. // 溫度表 -10 度到 105 度
    
27. const uint v_table[116]={
    
28. 895,932,969,1006,1045,1085,1125,1166,1208,1250, //-10 ----  -1
    
29. 1294,1338,1382,1427,1473,1519,1566,1614,1661,1709,//0 ----  9
    
30. 1758,1807,1856,1905,1955,2004,2054,2104,2154,2204,//10 ----  19
    
31. 2253,2303,2353,2402,2451,2500,2549,2597,2645,2692,//20 ----  29
    
32. 2740,2786,2832,2878,2923,2968,3012,3056,3099,3141,//30 ----  39
    
33. 3183,3224,3265,3304,3344,3382,3420,3457,3493,3529,//40 ----  49
    
34. 3564,3599,3632,3665,3698,3729,3760,3791,3820,3849,//50 ----  59
    
35. 3878,3905,3932,3959,3985,4010,4034,4058,4082,4105,//60 ----  69
    
36. 4127,4149,4170,4191,4211,4231,4250,4269,4287,4304,//70 ----  79
    
37. 4322,4339,4355,4371,4387,4402,4417,4431,4445,4459,//80 ----  89
    
38. 4472,4485,4497,4510,4522,4533,4545,4556,4566,4577,//90 ----  99
    
39. 4587,4597,4607,4616,4625,4634};//100 ----  105
    
40. 
    
41. 
    
42. const uchar sound[]={ //樂曲數据表
    
43. 0x45,0x48,0x4a,0x4a,0x4a,0x4a,0x4a,0x4a,0x49,0x4a,
    
44. 0x49,0x48,0x48,0x48,0x48,0x48,0x45,0x48,0x4a,0x4a,
    
45. 0x48,0x4a,0x4c,0x4c,0x4b,0x4a,0x49,0x49,0x49,0x49,
    
46. 0x49,0x4c,0x4b,0x4a,0x4a,0x4a,0x49,0x48,0x48,0x49,
    
47. 0x4a,0x4c,0x4b,0x4b,0x4b,0x4b,0x4b,0x46,0x46,0x45,
    
48. 0x45,0x45,0x47,0x48,0x49,0x49,0x4a,0x49,0x48,0x48,
    
49. 0x48,0x48,0x48,0x48,
    
50. 
    
51. 0x00,0x00
    
52. };
    
53. 
    
54. const uint TONETABLE[15]={ //音調頻率數据表
    
55. 64580,64684,64777,64820,64898,64968,65030,65058,
    
56. 65110,65157,65178,65217,65252,65283,65297
    
57. };
    
58. 
    
59. uint toneconst;
    
60. 
    
61. void delay_1ms(void)
    
62. {
    
63. uint i;
    
64. for (i=0;i<DELAY_MIN;i++);
    
65. WDR();
    
66. }
    
67. 
    
68. void delay_nms(uint n)
    
69. {
    
70. uint i;
    
71. for (i=0;i<n;i++)
    
72. delay_1ms();
    
73. }
    
74. 
    
75. void disp_led(uint value)
    
76. {
    
77. uchar i,j;
    
78.   uchar led_data[5];
    
79. 
    
80. led_data[0] = adc_channel+17;
    
81. 
    
82. if ((value & 0x8000)==0x8000)
    
83. {
    
84. value &= 0x7fff;
    
85. led_data[4] = 16; // 顯示負號
    
86. }
    
87. else
    
88. {
    
89. value &= 0x7fff;
    
90. led_data[4] = value/1000;
    
91. };
    
92. 
    
93. led_data[3] = value/100%10;
    
94. led_data[2] = value/10%10;
    
95. led_data[1] = value%10;
    
96. 
    
97. for (j=0;j<20;j++)
    
98. {
    
99. for (i=0;i<5;i++)
    
100. {
     
101. LED_VALUE = disp_table[led_data[i]];
     
102. if(i==2)
     
103. {
     
104. LED_VALUE |= 0x80; // 加上小數點
     
105. }
     
106. LED_NUM = ~BIT(i+3);
     
107. delay_nms(5);
     
108. LED_NUM = 0xff;
     
109. };
     
110. };
     
111. }
     
112. 
     
113. #pragma interrupt_handler adc_isr:iv_ADC
     
114. void adc_isr(void)
     
115. {   
     
116.     uint temp;
     
117. temp = ADCL;
     
118. temp |= (int)ADCH<<8;
     
119. temp = (49*temp)/10;
     
120. v += temp;
     
121. }
     
122. 
     
123. void get_adc_value(uchar adc_pin)
     
124. {   
     
125.     uchar i;
     
126. v = 0x0000;
     
127. ADMUX = (1<<REFS0)|adc_pin;
     
128. // for(i=0;i<2;i++)
     
129. {
     
130. // ADCSRA = (1<<ADEN)|(1<<ADIE)|(1<<ADPS2)|(1<<ADPS1);
     
131. ADCSRA |= (1<<ADSC);
     
132. delay_nms(1);
     
133. //  while((ADCSRA & (1<<ADIF))==0);  
     
134. ADCSRA &= ~(1<<ADSC);
     
135. // ADCSRA &= ~(1<<ADIF);   
     
136.     }
     
137. // v = v/2;
     
138. }
     
139. 
     
140. uchar get_key_value(void)
     
141. {
     
142. get_adc_value(ADC_KEY);
     
143. if (v < 1000)
     
144. {
     
145. return 0;
     
146. }
     
147. else
     
148. {
     
149. if ((v > 3000)&&(v < 3500))
     
150. {
     
151. return 1;
     
152. }
     
153. else
     
154. {
     
155. if ((v > 2000)&&(v < 2800))
     
156. {
     
157. return 2;
     
158. }
     
159. else
     
160. {
     
161. if ((v > 1000)&&(v < 1900))
     
162. {
     
163. return 3;
     
164. }
     
165. else
     
166. {
     
167. return 0;
     
168. }
     
169. }
     
170. }
     
171. }
     
172. }
     
173. 
     
174. void temp_setting(void)
     
175. {
     
176. uchar key;
     
177. key = get_key_value();
     
178. 
     
179. if(key==2)
     
180. {
     
181. adc_channel++;
     
182. if (adc_channel>3)
     
183. {
     
184. adc_channel = 0;
     
185. }
     
186. }
     
187. 
     
188. if(key==3)
     
189. {
     
190. if (adc_channel==0)
     
191. {
     
192. adc_channel = 1;
     
193. auto_mode = ~auto_mode;
     
194. }
     
195. adc_channel--;
     
196. }
     
197. 
     
198. while(1) // 查鰎盤是否放開
     
199. {
     
200. get_adc_value(ADC_KEY);
     
201. if(v < 500)
     
202. {
     
203. break;
     
204. };
     
205. };
     
206. 
     
207. if (key==1) setting_mode = 1;
     
208. 
     
209. while(setting_mode==1)
     
210. {
     
211. key = get_key_value();
     
212. if(key==1)
     
213. {
     
214. adc_channel++;
     
215. if (adc_channel>3)
     
216. {
     
217. adc_channel = 0;
     
218. setting_mode = 0;
     
219. EEPROMwrite(0x01, hot_warning[0]);
     
220. delay_nms(5);
     
221. EEPROMwrite(0x02, hot_warning[1]);
     
222. delay_nms(5);
     
223. EEPROMwrite(0x03, hot_warning[2]);
     
224. delay_nms(5);
     
225. EEPROMwrite(0x04, hot_warning[3]);
     
226. delay_nms(5);
     
227. }
     
228. }
     
229. else
     
230. {
     
231. if(key==2)
     
232. {
     
233. ++hot_warning[adc_channel];
     
234. }
     
235. else
     
236. {
     
237. if(key==3) --hot_warning[adc_channel];
     
238. };
     
239. };
     
240. 
     
241. while(1)
     
242. {
     
243. get_adc_value(ADC_KEY);
     
244. if(v < 500)
     
245. {
     
246. break;
     
247. };
     
248. };
     
249. 
     
250. disp_led(hot_warning[adc_channel]);
     
251. }
     
252. 
     
253. }
     
254. 
     
255. uint get_degree(void)
     
256. {
     
257. uchar x,y;
     
258. uint v_big,v_small,v_step;
     
259. 
     
260. if (v<100) return 0x83E7; // 當沒有信號時顯示-99.9錯誤
     
261. 
     
262. for (x=0;x<115;x++) // 查表
     
263. {
     
264. if (v_table[x] >= v) // 找出電壓區域
     
265. {
     
266. v_big = v_table[x]; // 區域 高段
     
267. v_small = v_table[x-1]; //區域 低段
     
268. v_step = (v_big - v_small)/10; // 把區域細分成10份
     
269. for (y=0;y<10;y++) // 細分比較
     
270. {
     
271. v_small += v_step;
     
272. if (v < v_small) // 得出結果
     
273. {
     
274. v = x*10+y;// 其中x*10 為整數部分, y 為小數部分
     
275. if (x<10) // 少於10時為負溫度
     
276. {
     
277. v |= 0x8000; // 加入負號標記
     
278. }
     
279. else
     
280. {
     
281. v -= 100; // 0 度修正
     
282. }
     
283.         return v;   
     
284. };
     
285. };
     
286. };
     
287. WDR();
     
288. }   
     
289.   return v;  
     
290. }
     
291. 
     
292. void init_port(void)
     
293. {
     
294.   CLKPR = 0x80;
     
295.   CLKPR = 0x00;
     
296. DDRB = 0xff;
     
297. PORTB = 0xff;
     
298. DDRC = 0x00;
     
299. PORTC = 0x00;
     
300. DDRD = 0xff;
     
301. PORTD = 0xff;
     
302. CLI();
     
303. ADMUX = (1<<REFS0);
     
304. ADCSRA = (1<<ADEN)|(1<<ADIE)|(1<<ADPS2)|(1<<ADPS1);
     
305. SEI();
     
306. WDR(); // 使用看門狗
     
307. //WDTCR = 0x0F;
     
308.     WDTCSR = 0x0F;
     
309. }
     
310. 
     
311. //**********************************************8
     
312. #pragma interrupt_handler timer1_ovf_isr:14 //iv_TIMER1_OVF
     
313. void timer1_ovf_isr(void)
     
314. {
     
315. TCNT1=toneconst;
     
316. PORTD^=SOUND_OUT;
     
317. }
     
318. 
     
319. void music(void)
     
320. {
     
321. uchar temp,temp1;
     
322. uint sound_add=0;
     
323. 
     
324. TCCR1A = 0x00;
     
325. TCCR1B =(1<<CS11);//8分頻
     
326. temp1 = sound[sound_add];
     
327. while(temp1!=0)
     
328. {
     
329. temp=temp1;
     
330. temp&=0x0f;
     
331. if(temp!=0)
     
332. {
     
333. TIMSK1|=(1<<TOIE1);//根据SOUNDTABLE中數据的低四位產生音樂頻率
     
334. temp--;
     
335. toneconst=TONETABLE[temp];
     
336. TCNT1=toneconst;
     
337. }
     
338. temp=temp1;
     
339. temp>>=4;
     
340. temp&=0x0f;
     
341. delay_nms(temp*129);//根据SOUNDTABLE中數据的高四位，控制音樂頻率持續時間
     
342. TIMSK1&=~(1<<TOIE1);
     
343. sound_add++;
     
344. temp1 = sound[sound_add];
     
345. }
     
346. delay_nms(1000);
     
347. }
     
348. //****************************************************
     
349. 
     
350. void main(void)
     
351. {
     
352. uchar j;
     
353. init_port();
     
354. hot_warning[0] = EEPROMread(0x01);
     
355. hot_warning[1] = EEPROMread(0x02);
     
356. hot_warning[2] = EEPROMread(0x03);
     
357. hot_warning[3] = EEPROMread(0x04);
     
358. while(1)
     
359. {
     
360. for(j=0;j<4;j++)
     
361. {
     
362. temp_setting(); // 設定
     
363. get_adc_value(adc_channel); // 進行adc取樣
     
364. get_degree(); // get_degree()的功能是把adc的值進行查表取數
     
365. if(v/10 > hot_warning[adc_channel]) // 檢查溫度是否超過上限
     
366. {
     
367. //disp_led(0x83E7);
     
368. music();
     
369. }
     
370. else
     
371. {
     
372. disp_led(v); // 顯示數據,v由get_degree()中產生
     
373. }
     
374. WDR();
     
375. }
     
376. 
     
377. if (auto_mode==0xff) // 自動模式
     
378. {
     
379. adc_channel++;
     
380. if (adc_channel>3) adc_channel=0;
     
381. }
     
382. }
     
383. 
     
384. }
     
385. 
     
386. 
     

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