Arduino 测试空气质量等级模块 ZP07-MP503 测试

 1 //
 2 // Author: Aiyauto
 3 // VERSION: 0.0.1     
 4 // Date:2017/08/16
 5 // PURPOSE: ZP07_MP503 空气质量模块检测 示例 for Arduino
 6 //
 7 // DATASHEET: 
 8 //
 9 // URL: 
10 //
11 // 
12 
13 
14 int airQuality;     //空气质量等级 0-10
15 
16 void setup() {
17   Serial.begin(9600);
18 }
19 
20 void loop() {
21     airQuality = ZP07_MP503(8);
22     Serial.print("  当前空气质量等级：");
23     Serial.println(airQuality);
24 }
25 
26 
27 int ZP07_MP503(int pinA) {
28     
29     /* 初始化 */
30     pinMode(pinA, INPUT);
31     unsigned long millisTimes = millis();
32     unsigned long startMillisTimes = millisTimes;
33     unsigned long stopMillisTimes;
34     signed long deltaMillisTimes =  millisTimes - startMillisTimes;
35     bool turnState = false;
36     bool pinAstate = digitalRead(pinA);;
37     bool pinAstateLast = pinAstate;
38     int result;
39 
40     /* 测试读取状态 */
41     while (true) {
42         pinAstate = digitalRead(pinA);    //读取管脚状态
43 
44         if (pinAstate != pinAstateLast) {
45             if (turnState == true) {
46                 stopMillisTimes = millis();
47                 if (pinAstate == false) {
48                 deltaMillisTimes = stopMillisTimes - startMillisTimes;
49                 }
50                 else {
51                     deltaMillisTimes = 98 - stopMillisTimes + startMillisTimes;
52                 }
53             result = (deltaMillisTimes + 5) / 10;    //运算结果四舍五入
54             break;                    //跳出循环
55             }
56         if (turnState == false) {
57             startMillisTimes = millis();    //刷新当前时间
58             turnState = true;               //更新标记
59             }
60             pinAstateLast = pinAstate;
61         }
62 
63         millisTimes = millis();
64         deltaMillisTimes = millisTimes - startMillisTimes;
65         if ( deltaMillisTimes > 100 ) { //结果判定，超时跳出循环
66         if (pinAstate == true) {      //空气质量等级10
67             result = 1;
68         }
69         if (pinAstate == false) {     //空气质量等级0
70             result = 0;
71         }
72         break;
73         }
74     }
75   
76     //  Serial.print(" pinAstate：");
77     //  Serial.print(pinAstate);
78     //  Serial.print(" ,  空气质量等级：");
79     //  Serial.print(result);
80     //  Serial.print(", deltaMillisTimes：");
81     //  Serial.println(deltaMillisTimes);
82 
83     return result;        //返回空气质量等级结果
84     
85 }