arduino按键长按不接收信号只接收短按代码参考

我可以为您提供参考代码，请参考以下示例：

const int buttonPin = 2;          // the number of the pushbutton pin
int buttonState = 0;             // variable for reading the pushbutton status
unsigned long buttonStartTime;   // variable to store the start time of button press

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); //set input pin with pull-up resistor
}

void loop() {
  buttonState = digitalRead(buttonPin);  // read the state of the pushbutton
  if (buttonState == LOW) {              // button is pressed
    buttonStartTime = millis();          // record the start time of button press
    while (digitalRead(buttonPin) == LOW) {
      // wait for button release or timeout
      if (millis() - buttonStartTime > 5000) {
        // button is held for more than 5 seconds
        // do something here
        break;
      }
    }
    if (digitalRead(buttonPin) == HIGH && millis() - buttonStartTime >= 50) {
      // button is released and held for more than 50ms
      // do something here
    }
  }
  delay(10);
}

这个代码告诉 Arduino，当按键被按下并保持按下超过 5 秒时，执行某些操作。如果按键被按下并松开，且按下时间超过 50 毫秒，则执行另一些操作。您可以根据需要对代码进行更改。