零基础入门学用 Arduino 教程 – 14 数字输入（2） – 按键开关控制


/*
 DigitalReadSerial
 Reads a digital input on pin 2, prints the result to the serial monitor
 读取引脚2的数字输入，将结果显示在串口监视器中

 This example code is in the public domain.
 */

// digital pin 2 has a pushbutton attached to it. Give it a name:
//引脚2连接有按键开关，给它一个名字：
int pushButton = 2;

// the setup routine runs once when you press reset:
//当你按下复位按钮后，setup流程运行一次：
void setup() {
  // initialize serial communication at 9600 bits per second:
  //串口通讯初始化，每秒9600位
  Serial.begin(9600);
  // make the pushbutton's pin an input:
  //设置按键引脚为输入
  pinMode(pushButton, INPUT);
}

// the loop routine runs over and over again forever:
// loop 流程会永远的反复运行
void loop() {
  // read the input pin:
  //读取输入引脚:
  int buttonState = digitalRead(pushButton);
  // print out the state of the button:
  // 显示按键状态
  Serial.println(buttonState);
  delay(1);        // delay in between reads for stability 为确保程序稳定运行进行短暂停止
}

DigitalReadSerial

Reads a digital input on pin 2, prints the result to the serial monitor

读取引脚2的数字输入，将结果显示在串口监视器中

This example code is in the public domain.

// digital pin 2 has a pushbutton attached to it. Give it a name:

//引脚2连接有按键开关，给它一个名字：

int pushButton = 2;

// the setup routine runs once when you press reset:

//当你按下复位按钮后，setup流程运行一次：

void setup() {

// initialize serial communication at 9600 bits per second:

//串口通讯初始化，每秒9600位

Serial.begin(9600);

// make the pushbutton's pin an input:

//设置按键引脚为输入

pinMode(pushButton, INPUT);

}

// the loop routine runs over and over again forever:

// loop 流程会永远的反复运行

void loop() {

// read the input pin:

//读取输入引脚:

int buttonState = digitalRead(pushButton);

// print out the state of the button:

// 显示按键状态

Serial.println(buttonState);

delay(1); // delay in between reads for stability 为确保程序稳定运行进行短暂停止

}