// 定义常量const int buttonPin = 2;const int ledPin = 13;// 按键前一个状态int oldButtonState = HIGH;// 按键状态int buttonState = HIGH;// led灯状态，false->没亮，true->亮boolean ledState = false;void setup() {// 使用内置上拉电阻 pinMode(buttonPin, INPUT_PULLUP); pinMode(led...
void loop() { // put your main code here, to run repeatedly: for(i=2;i<=10;i++) { if(digitalRead(i)==HIGH) { delay(button_delay); if(digitalRead(i)==HIGH) { if(io_flag[i]==0) { io_flag[i]=1; print_s(); //按钮按下,打印消息 delay(button_every_delay); } } } if...
清楚了按键不同操作对PIN2引脚电平影响以后,我们就可以写代码了 constintbuttonPin =2; constintledPin =13; intbuttonState =0;/*variable for reading the pushbutton status*/ voidsetup(){ /* initialize the LED pin as an output:*/ pinMode(ledPin, OUTPUT); /* initialize the pushbutton pin as ...
// if the LED is off turn it on and vice-versa: if (ledState == LOW) { ledState = HIGH; } else { ledState = LOW; } // set the LED with the ledState of the variable: digitalWrite(ledPin, ledState); } } [Get Code] 更多 setup() loop() millis() Button - 用一个按钮来控...
使用ESP32通过网页按钮控制开关灯,Arduino IDE编写,HTTP异步请求,HTML Button控件创建网页服务器,使用Javascript控制LED1.8万 25 2022-02-08 10:13:49 未经作者授权,禁止转载 您当前的浏览器不支持 HTML5 播放器 请更换浏览器再试试哦~249 152 548 80 使用网页上的按钮控制ESP32的LED亮灭,Arduino开发,软件环境...
//按键开关控制LED灯,按一下亮,再按一下灭 const int buttonpin = 2;//button连接引脚 const int ledpin = 13;//led连接引脚 boolean ledstate = false;//led状态 void setup() { // put your setup code here, to run once: pinMode(ledpin, OUTPUT); ...
在按键开关旁边再多加一路LED,LED的连接还是和以前一样(注意正负极),代码如下 //按钮控制LED的亮灭,按下亮,松开则灭 const int buttonpin = 2;//button连接引脚 const int ledpin = 13;//led连接引脚 void setup() { // put your setup code here, to run once: ...
* Digital_Button * 通过按键控制LED灯亮灭 */intbuttonPin=2;// 按键的管脚定义intledPin=9;// LED灯管脚定义voidsetup(){pinMode(ledPin,OUTPUT);//设置LED管脚输出模式pinMode(buttonPin,INPUT_PULLUP);//设置按键管脚上拉输入模式}voidloop(){if(digitalRead(buttonPin)==LOW){// 若按键被按下delay...
This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Button */// constants won't change. They're used here to set pin numbers:constintbuttonPin=2;// the number of the pushbutton pinconstintledPin=13;// the number of the LED pin// variables will change:int...
在loop() 中,您需要读取按钮输入并根据按钮状态设置 LED 引脚。 查看完整代码: 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 forreading the pushbutton status...