pinMode(pushButton, INPUT);设置数字引脚2为输入模式。这意味着该引脚将用于读取外部信号(如按钮的状态)。 4.loop()函数 void loop() { // read the input pin: int buttonState = digitalRead(pushButton); // print out the state of the button: Serial.println(buttonState); delay(1); // delay ...
Serial.begin(9600); }voidloop() {//read the input pinbuttonState = digitalRead(2);//print out the state of the buttonSerial.println(buttonState); delay(10);//Delay a little bit to improve simulation performance}
// read the state of the pushbutton value: 读取按钮开关的状态值 buttonState = digitalRead(buttonPin); // check if the pushbutton is pressed. If it is, the buttonState is HIGH: 检查按钮开关是否被按下。如果是的话,buttonState 为 HIGH if (buttonState == HIGH) { // turn LED on: 点亮...
// read buttons states int buttonUpState = digitalRead(pullUp); int buttonDownState = digitalRead(pullDown); // make a message that will be sent to the serial line String message = “Pull Up: ” + String(buttonUpState); message = message + “。 Pull Down: ” + String(buttonDownState)...
println("off"); } delay(100); } lastButtonState = currentButtonState; } 时间函数 Time Functions delay(): 描述:将程序暂停给定参数的时间量(以毫秒为单位) 函数原型:delay(ms) 参数:ms - 暂停的毫秒数 返回值:无 millis(): 描述:返回自Arduino板开始运行当前程序以来的毫秒数。大约50天后,此数字...
int buttonState; //初始化按钮状态 void setup() { pinMode(ledPin, OUTPUT); //将LED引脚设为输出 pinMode(buttonPin, INPUT_PULLUP); //将按钮引脚设为输入,使用内部上拉电阻 } void loop() { buttonState = digitalRead(buttonPin); //读取按钮状态 ...
lastButtonState = reading; } 2、去抖 - Debounce Pushbuttons often generate spurious open/close transitions when pressed, due to mechanical and physical issues: these transitions may be read as multiple presses in a very short time fooling the program. This example demonstrates how todebouncean ...
}// the loop routine runs over and over again forever:voidloop(){// read the input pin:intbuttonState = digitalRead(pushButton);// print out the state of the button:Serial.println(buttonState); delay(1);// delay in between reads for stability} ...
pinMode(buttonPin,INPUT); } voidloop() { // read the state of the pushbutton value: buttonState=digitalRead(buttonPin); // check if the pushbutton is pressed. If it is, the buttonState is HIGH: if(buttonState==HIGH) { // turn LED on: ...
pinMode( buttonPin, INPUT ) ; } } void loop( void ) { // Begin Garage Opener if ( IS_GARAGE_OPENER ) { int read = digitalRead( buttonPin ) ; if( read != previousButtonState ) { // Reset the debouncing timer previousDebounceTime = millis() ; ...