烟雾报警器的单片机源程序与实物制作

1. 
   
2. #include <reg52.h>
   
3. 
   
4. //宏定义
   
5. #define uint unsigned int
   
6. #define uchar unsigned char
   
7. #define Data_ADC0809 P1
   
8. //管脚声明
   
9. sbit Feng = P3^0;
   
10. //ADC0809
    
11. sbit ST=P3^3;
    
12. sbit EOC=P3^4;
    
13. sbit OE=P3^2;
    
14. //按键
    
15. sbit Key1=P3^5;
    
16. sbit Key2=P3^6;
    
17. sbit Key3=P3^7;
    
18. //显示数组 0-9+F
    
19. uchar Data_[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x71,0x3f};
    
20. sbit Wei1 = P2^7;
    
21. sbit Wei2 = P2^6;
    
22. sbit Wei3 = P2^5;
    
23. sbit Wei4 = P2^4;
    
24. //函数声明
    
25. extern uchar ADC0809();
    
26. void Display(uchar X,uchar Data);
    
27. void delay(uint t);
    
28. //酒精含量变量
    
29. uchar temp=0;
    
30. //蜂鸣器变量
    
31. uchar FF=10;
    
32. //显示模式
    
33. uchar Mode=0;
    
34. uchar p;
    
35. void main()
    
36. {
    
37. while(1)
    
38. {
    
39. //正常模式
    
40. if(Mode==0)
    
41. {
    
42. //读取AD值
    
43. temp=ADC0809();
    
44. for(p=0;p<30;p++)
    
45. Display(0,temp);
    
46. //判断是否报警
    
47. if(temp>FF)
    
48. {
    
49. Feng=0;
    
50. }
    
51. else
    
52. {
    
53. Feng=1;
    
54. }
    
55. }
    
56. //调整模式
    
57. else
    
58. {
    
59. Display(1,FF);
    
60. }
    
61. //功能键
    
62. if(Key3==0)
    
63. {
    
64. Feng=0;
    
65. delay(100);
    
66. while(Key3==0)
    
67. {
    
68. if(Mode==0)
    
69. Display(0,temp);
    
70. else
    
71. Display(1,FF);
    
72. }
    
73. if(Mode==0)
    
74. Mode=1;
    
75. else
    
76. Mode=0;
    
77. Feng=1;
    
78. }
    
79. //增加
    
80. if(Key2==0&&Mode==1)
    
81. {
    
82. Feng=0;
    
83. delay(100);
    
84. while(Key2==0)
    
85. {
    
86. Display(1,FF);
    
87. }
    
88. FF++;
    
89. if(FF==251)
    
90. FF=250;
    
91. Feng=1;
    
92. }
    
93. //减少
    
94. if(Key1==0&&Mode==1)
    
95. {
    
96. Feng=0;
    
97. delay(100);
    
98. while(Key1==0)
    
99. {
    
100. Display(1,FF);
     
101. }
     
102. FF--;
     
103. if(FF==0xff)
     
104. FF=0;
     
105. Feng=1;
     
106. }
     
107. }
     
108. }
     
109. //ADC0809读取信息
     
110. uchar ADC0809()
     
111. {
     
112. uchar temp_=0x00;
     
113. //初始化高阻太
     
114. OE=0;
     
115. //转化初始化
     
116. ST=0;
     
117. //开始转换
     
118. ST=1;
     
119. ST=0;
     
120. //外部中断等待AD转换结束
     
121. while(EOC==0)
     
122. //读取转换的AD值
     
123. OE=1;
     
124. temp_=Data_ADC0809;
     
125. OE=0;
     
126. return temp_;
     
127. }
     
128. //延时
     
129. void delay(uint t)
     
130. {
     
131. uint i,j;
     
132. for(i=0;i<t;i++)
     
133. for(j=0;j<10;j++);
     
134. }
     
135. //显示 X表示状态 Data表示数据
     
136. void Display(uchar X,uchar Data)
     
137. {
     
138. Wei1=1;
     
139. Wei2=1;
     
140. Wei3=1;
     
141. Wei4=1;
     
142. P0=0xff;
     
143. //正常模式
     
144. if(X==0)
     
145. {
     
146. P0=~Data_[11];
     
147. }
     
148. //非正常
     
149. else
     
150. {
     
151. P0=~Data_[10];
     
152. }
     
153. Wei1=0;
     
154. Wei2=1;
     
155. Wei3=1;
     
156. Wei4=1;
     
157. delay(10);
     
158. Wei1=1;
     
159. Wei2=1;
     
160. Wei3=1;
     
161. Wei4=1;
     
162. P0=~Data_[Data/100];
     
163. Wei1=1;
     
164. Wei2=0;
     
165. Wei3=1;
     
166. Wei4=1;
     
167. delay(10);
     
168. Wei1=1;
     
169. Wei2=1;
     
170. Wei3=1;
     
171. Wei4=1;
     
172. 
     
173. P0=~Data_[Data/10%10];
     
174. Wei1=1;
     
175. Wei2=1;
     
176. Wei3=0;
     
177. Wei4=1;
     
178. delay(10);
     
179. Wei1=1;
     
180. Wei2=1;
     
181. Wei3=1;
     
182. Wei4=1;
     
183. P0=~Data_[Data%10];
     
184. Wei1=1;
     
185. Wei2=1;
     
186. Wei3=1;
     
187. Wei4=0;
     
188. delay(10);
     
189. Wei1=1;
     
190. Wei2=1;
     
191. Wei3=1;
     
192. Wei4=1;
     
193. }
     

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