Pushbuttons or switches connect two points in a circuit when you press them. When the pushbutton is open (unpressed) there is no connection between the two legs of the pushbutton. Because the internal pull-up on pin 2 is active and connected to 5V, we read HIGH when the button is op...
boolean buttonState = digitalRead(pushButton); digitalWrite(led, buttonState); 另外就是这个代码的效果是按下LED亮,松开则灭,我想改进一下,按一下亮,再按一下灭,代码如下: //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 ...
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: pinMode(ledpin, OUTPUT);//设置led连接引脚为输出模式 pinMode(buttonpin, INPUT); //设置button连接引脚为输入模式 } void loop() { // 检测按钮是否...
This example code is in the public domain */ void setup() { //start serial connection Serial.begin(9600); //configure pin2 as an input and enable the internal pull-up resistor pinMode(2, INPUT_PULLUP); pinMode(13, OUTPUT); } void loop() { //read the pushbutton value into a vari...
This example code is in the public domain. https://www.arduino.cc/en/Tutorial/BuiltInExamples/Button */ // constants won't change. They're used here to set pin numbers: constintbuttonPin=15;// the number of the pushbutton pin
This example code is in the public domain.http://www.arduino.cc/en/Tutorial/Button*/intbuttonState =0;voidsetup() { pinMode(2, INPUT); pinMode(13, OUTPUT); }voidloop() {//read the state of the pushbutton valuebuttonState = digitalRead(2);//check if pushbutton is pressed. if it...
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...
该板的原理图很简单,Arduino Nano 连接了 12 个按钮。每个 Push Button 都连接一个 IO端口,当我们按下任何按钮时,它会将 IO 端口拉低至 GND。 两个ON-OFF 开关也是如此,但是当我们按下它们时,它们会使 IO 引脚拉下更长的时间。然后两个 Pot 用 A4 和 A5 连接。
Added the PushbuttonStateMachine class to reduce code duplication. Moved the library to its own repository at https://github.com/pololu/pushbutton-arduino. 1.0.1 (2014-01-22): Fixed it to work properly with multiple instances. Improved the debouncing logic and reduced the width of PrevTimeMill...
intbuttonState=digitalRead(pushButton);//recordstatisticsaboutthe statusofdigitalpin2 Serial.println(buttonState);//Serialportprintstatisticsaboutthe statusofdigitalpin2 delay(1);//delay1ms } 点击上传,ArduinoIDE将会编译代码并上传到101中。 一旦上传完成后,打开“工具”“串口监视器”,打开串口监视器。 波特...