按钮长按控制闪烁循环

Posted 2023-02-27

【中文标题】按钮长按控制闪烁循环

【英文标题】：button long-pressed to control the loop of blinking

【发布时间】：2014-10-04 11:40:22

【问题描述】：

我已经在一个关于由按钮控制闪烁 LED 的问题中询问过这个程序，但现在我想问一下我的程序是否能够长按 5 秒钟然后它会开始闪烁循环，如果按钮被长按少于或多于 5 秒。

int buttonPin = D0;    
int ledPin = D1; 
int held = 5;

int ledState = LOW;         
int buttonState;             
int lastButtonState = LOW;   


long lastDebounceTime = 0;  
long debounceDelay = 50;   

void setup() 

pinMode(buttonPin, INPUT);

pinMode(ledPin, OUTPUT);


digitalWrite(ledPin, ledState);


void loop() 


int reading = digitalRead(buttonPin);

if (reading != lastButtonState) 

    lastDebounceTime = millis();
 

if ((millis() - lastDebounceTime) > debounceDelay) 


    if (reading != buttonState) 
    
        buttonState = reading;
        if (buttonState == HIGH && held == 5) 
        
          BLINK;
          if 
          A;
          
          else 
          B;
          
        


    
   

   digitalWrite(ledPin, ledState);
   lastButtonState = reading;
 

 void BLINK()
            int cntr=5;
            do
            
                digitalWrite(ledPin, HIGH);   
                delay(200);  
                digitalWrite(ledPin, LOW);    
                delay(200);                
                cntr = cntr-1;
             
            while (cntr!=0);
            digitalWrite(ledPin, HIGH);
            delay(900000);
            ledState = LOW;
   
   void A()
   if (held < 5)
    digitalWrite(ledPin, LOW);

   
   

   void B()
   if (held > 5)
    digitalWrite(ledPin, LOW);
   
   

【参考方案1】：

你为什么不试着用一个while循环来阻止这个过程

if(digitalread(buttonPin) == HIGH)
    timerStart = millis();
    while(digitalread(buttonPin == HIGH)
    timerEnd = millis();

然后比较 timerStart 和 timerEnd