Reads a digital input on pin 2, prints the result to the serial monitor This example code is in the public domain. */ 2. 变量定义 // digital pin 2 has a pushbutton attached to it. Give it a name: int pushButton = 2; 定义了一个变量pushButton,并将其赋值为2。这表示代码将操作数字...
格瑞图:Arduino-0002-内置示例-模拟读 Analog Read Serial 格瑞图:Arduino-0003-内置示例-最简化代码 Bare Minimum 格瑞图:Arduino-0004-内置示例-闪烁 Blink 格瑞图:Arduino-0005-内置示例-数字串口读取 Digital Read Serial 格瑞图:Arduino-0006-内置示例-亮度调节 Fade 格瑞图:Arduino-0007-内置示例-读取模拟电压 ...
Next, initialize digital pin 2, the pin that will read the output from your button, as an input: 然后初始化数字针 2,该针会动按钮读取输出,并作为输入: pinMode(2,INPUT); Now that your setup has been completed, move into the main loop of your code. When your button is pressed, 5 volt...
digital input 数字电路 按键 分类:Arduino 今天我们借助一个按键开关来聊一下有关Arduino“数字写入”的问题,众所周知开关就是可以控制某段电路断开或接通的元件,但是怎么能通过一个按键开关控制Arduino某一数字接口的电位呢?让我们来用按键连接一个正逻辑电路(如下图),10K电阻接地,按键开关连接+5V,公共端与Arduino...
DigitalPins 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 ...
Reads a digital input on pin 2, prints the result to the serial monitor This example code is in the public domain. */ // digital pin 2 has a pushbutton attached to it. Give it a name: int pushButton = 2; // the setup routine runs once when you press reset: ...
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...
INPUT 输入模式;OUTPUT 输出模式;INPUT_PULLUP 输入上拉模式 配置模式之后,用digitalWrite函数使该引脚输出高电平或低电平。 除了输出,数字引脚还可以用digitalRead()读取外部输入的数字信号,其形式为:digitalRead(pin); 其中参数为引脚编号。 当Arduino以5V供电时,会将范围为-0.5~1.5V的输入电压作为低电平识别,范围在...
1. Drag and drop the digital-read node. Modify the port by replacing the D0 with D22 (for input I0.0 in M-Duino21+). In your case, replace D0 with the Arduino pin that corresponds to the input from the PLC that you want to test. 2. Add the xod/debug/watch node. Connect it...
/*DigitalReadSerial Reads a digital input on pin 2, prints the result to the serial monitor This example code is in the public domain.*/intbuttonState =0;voidsetup() { pinMode(2, INPUT); Serial.begin(9600); }voidloop() {//read the input pinbuttonState = digitalRead(2);//print out...