- Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is conn...
我们先来看个Arduino的实例程序——闪烁的LED,代码如下。 //定义LED所在的引脚#defineLED 13#初始化函数,程序从这里开始,setup函数的内容只执行一次voidsetup(){pinMode(LED,OUTPUT);//设置LED引脚为输出模式digitalWrite(LED,LOW);//设置LED引脚为低电平}//在执行结束setup函数后,循环...
int digitalPin = 2; // D2 引脚连接数码管 a 脚，D3 连 b... D9 连 h int weiPin = 10; // 第一位数引脚接口 void setup() {for(int x=0; x<4; x++) {pinMode(weiPin+x, OUTPUT); // 设置各位公共引脚接口为输出digitalWrite(weiPin+x, HIGH); // 公共引脚高电平，}for(int x=0;...
digitalWrite(ledPin, HIGH); } else { // turn LED off: digitalWrite(ledPin, LOW); } } 代码的工作原理 下面概述了代码的工作原理: 变量和常量: buttonPin:连接按钮的引脚 2。 ledPin:连接 LED 的引脚 13。 buttonState:存储按钮的状态(HIGH 或 LOW)。 setup(): 设置为 OUTPUT 和 INPUT。ledPinbutt...
digital Write(pin, value) 参数: pin:引脚编号(如1, 5, 10, A 0, A 3) value:HIGH or LOW 返回 无 例子: intled Pin=13;//LED连接到数字13号端口 voidsetup() { pin Mode(led Pin, OUTPUT) ;//设置数字端口为输入模式 } voidloop() { digital Write(led Pin, HIGH) ;//使LED亮 delay(10...
// Pin 13 has an LED connected on most Arduino boards. // give it a name: int led = 13; // the setup routine runs once when you press reset: void setup() { // initialize the digital pin as an output. pinMode(led, OUTPUT); ...
//Pin Definitions const int LED = 3; //define digital pin 3 as LED output void setup() { //Pin Configurations pinMode(LED, OUTPUT); //configure the LED pin as an Output } void loop() { //Flash a LED on and off every second ...
// put your setup code here, to run once: Serial.begin(9600); pinMode(ledPin, OUTPUT); // sets the digital pin as output pinMode(myledPin OUTPUT); // sets the digital pin as output pinMode(KEY1, INPUT_PULLUP); pinMode(KEY2, INPUT_PULLUP); myGizwits.begin(); } void wifi...
const int ledPin = 13; // LED connected to digital pin 13 void setup() { // put your setup code here, to run once: pinMode(ledPin, OUTPUT); } void loop() { // put your main code here, to run repeatedly: digitalWrite(ledPin, HIGH);//set the LED on delay(2000); digitalWrite...
数字I/O 函数 Digital I/O Functions pinMode(): 描述:将指定的引脚配置为输入或者输出的模式 函数原型:pinModel(pin,mode) 参数: pin:要设置其模式的引脚编号 mode:INPUT(输入模式),OUTPUT(输出模式),INPUT_PULLUP(上拉输入模式) 返回值:无 digitalRead(): 描述:读取指定数字引脚的值 函数原型:digitalRe...