运行多少秒 就停止 除非重新上电 arduino uno

 1 #include 
 2 int led=2;
 3 int jia=3;
 4 int jian=4;
 5 
 6 int temp=0;
 7 int t=22;//设定的秒
 8 int t_t=0;
 9 int addr = 1;//保存数据的地址
10 
11 void panduan(void);
12 void pd_io(void);
13 //void pd_baocun(addr,t,t_t);
14 
15 void setup() {
16 pinMode(jia, INPUT_PULLUP);
17 pinMode(jian, INPUT_PULLUP);
18 pinMode(led, OUTPUT);
19 temp=millis()/1000;
20 t_t=EEPROM.read(addr);
21 if(t_t<250 || t_t>1)
22     {t=t_t;}
23   else 
24       t_t=t;
25 }
26 
27 void loop() 
28 {
29   //pd_baocun(addr,t,t_t);
30   
31   if(millis()/1000 >(t-2) )
32   {
33    
34     if(t_t!=t){ EEPROM.write(addr,t);}
35   }
36   panduan();
37   pd_io();
38 }
39 
40 
41   
42 void pd_io(void)
43 {
44  if(digitalRead(jia)==LOW)
45  {
46     delay(15);
47     if(digitalRead(jia)==LOW)
48     {
49       t++;
50       
51       }
52   }
53    if(digitalRead(jian)==LOW)
54  {
55     delay(15);
56     if(digitalRead(jian)==LOW)
57     {
58       t--;
59      
60       }
61   }
62   
63   }
64 
65   
66 void panduan(void)
67 {
68   
69     if(millis()/1000 >t)
70   {
71      digitalWrite(led, HIGH);   
72     }
73     else
74       digitalWrite(led, LOW);
75   }

 

转载于:https://www.cnblogs.com/xiaohe520/articles/7704954.html