Blink Without Delay: 不用delay()函数,使LED灯闪烁 Button: 用一个按钮来控制LED灯 Debounce: 读取一个按钮,并滤掉噪音 Button State Change: 记录按键按下的次数 Input Pullup Serial: 示范怎么用pinMode()来上拉引脚 Tone: play 用压电扬声器弹奏一个旋律 Pitch follower: 用模拟输入来操作压电扬声器弹奏一个...
* LED从引脚13接地(或使用大多数Arduino板上的内置LED) This example code is in the public domain.http://www.arduino.cc/en/Tutorial/ButtonStateChange*/intbuttonState =0;intlastButtonState =0;intbuttonPushCounter =0;voidsetup() { pinMode(2, INPUT); Serial.begin(9600); pinMode(13, OUTPUT);...
const int buttonPin = 2; // the number of the pushbutton pin const int ledPin = 13; // the number of the LED pin // variables will change: int buttonState = 0; // variable for reading the pushbutton status void setup() { // initialize the LED pin as an output: pinMode(ledPi...
volatile bool toggleState = false; void checkSwitch() { // Check status of switch // Toggle LED if button pressed if (digitalRead(buttonPin) == LOW) { // Switch was pressed // Slight delay to debounce delay(200); // Change state of toggle toggleState = !toggleState; // Indicate st...
bool buttonPushed = false; int ledChange = 低; 诠释最后状态=高; 定义引脚的动作,哪个引脚将作为 INPUT 或 OUTPUT 工作。 pinMode(led1,输出); pinMode(led2,输出); pinMode(toggleLed,输出); pinMode(按钮,输入); 现在通过附加中断与 ISR 和中断模式的定义来定义中断引脚。请注意,建议在声明attachInterr...
// variables will change: intbuttonState=0;// variable for reading the pushbutton status voidsetup() { // initialize the LED pin as an output: pinMode(ledPin,OUTPUT); // initialize the pushbutton pin as an input: pinMode(buttonPin,INPUT); ...
const int buttonPin = 2; // the number of the pushbutton pin const int ledPin = 13; // the number of the LED pin // variables will change:int buttonState = 0; // variable for reading the pushbutton status void setup() { // initialize the LED pin as an ...
pushbutton pinconstintledPin =13;//the number of the LED pin//variables will change:intbuttonState =0;//variable for reading the pushbutton statusvoidsetup() {//initialize the LED pin as an output:pinMode(ledPin, OUTPUT);//initialize the pushbutton pin as an input:pinMode(buttonPin, ...
When the pushbutton is open (undressed) there is no connection between the two legs of the pushbutton, so the pin is connected to ground (through the pull-down resistor) and we read a LOW. When the button is closed (pressed), it makes a connection between its two legs, connecting the...
push3state = 0; // pushPressed = true; EEPROM.write(addr, 1); Serial.print("Push1 写入:"); Serial.println(EEPROM.read(addr)); // 用于调试 pushVal = 1; //保存push button-1的状态 lcd.clear(); lcd.setCursor(0, 0); lcd.print("提醒设置"); ...