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}
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...
// 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)...
}// 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} 2. 代码说明 2.1 名词解释 串行接口是一种...
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: ...
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 ...
inByte = Serial.read(); // read the state of the pushbuttons: int buttonState1 = digitalRead(buttonPin1); int buttonState2 = digitalRead(buttonPin2); int buttonState3 = digitalRead(buttonPin3); int buttonState4 = digitalRead(buttonPin4); ...
EEPROM.read()读取EEPROM中存储的信息 EEPROM.write()向EEPROM中写入信息 记录LED上一次通电的开关状态: 代码: #include <EEPROM.h> /*Button*/ const int buttonPin=2; const int ledPin= 13; bool ledState; bool buttonState; void setup() { ...
}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:digitalWrite(ledPin, HIGH); ...
{//read the pushbutton input pinbuttonState = digitalRead(2);//compare the buttonState to its previous stateif(buttonState !=lastButtonState) {//if the state has changed, increment the counterif(buttonState ==HIGH) {//if the current state is HIGH, then the button//went from off to on...