对于Arduino，用pinMode将IO口设为OUTPUT的时候，其实IO的状态为“强推挽”，也就是说设为高电平时，I...
在 Arduino 程序中，digitalWrite(LEDpin, state) 是一个函数，用于将电平写入数字引脚。该函数有两个参数：- LEDpin：数字引脚的编号。- state：布尔值，表示要写入的电平。如果 state 为 HIGH，则表示将高电平写入引脚；如果 state 为 LOW，则表示将低电平写入引脚。因此，digitalWrite(LEDpin, state...
digitalWrite(pin, value) 参数 pin:Arduino 引脚号。 value:HIGH或者LOW. 返回 无 示例代码 该代码使数字引脚 13 成为OUTPUT并通过以一秒钟的速度在HIGH和LOW之间交替来切换它。 voidsetup(){ pinMode(13, OUTPUT);// sets the digital pin 13 as output}voidloop(){digitalWrite(13, HIGH);// sets the ...
const int buttonPin = 2; // the number of the pushbutton pin const int ledPin = 13; // the number of the LED pin // Variables will change: int ledState = HIGH; // the current state of the output pin int buttonState; // the current reading from the input pin int lastButtonStat...
//Digital Capacitive Touch Sensor Switch Arduino Interfacing#define sensorPin1// capactitive touch sensor - Arduino Digital pin D1int relayPin =13;// Output RelayPin - Arduino Digital pin D13booleancurrentState = LOW;booleanlastState = LOW;booleanRelayState = LOW;voidsetup(){ ...
analogWrite(analogOutPin, outputValue); // print the results to the Serial Monitor: Serial.print("sensor = "); Serial.print(sensorValue); Serial.print("\t output = "); Serial.println(outputValue); // wait 2 milliseconds before the next loop for the analog-to-digital ...
Write a HIGH or a LOW value to a digital pin. If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to the corresponding value: 5V (or 3.3V on 3.3V boards) for HIGH, 0V (ground) for LOW.
在设置中,我们使用pinmode()命令将这些引脚定义为输出,然后使用digitalWrite ()将它们设置为 0 伏。 void setup() { //other stuff... // Declare digital output pins: pinMode(controlPin1A, OUTPUT); // 1A pinMode(controlPin2A, OUTPUT); // 2A pin...
这是一个抽象函数，其作用是向指定的数字量接口写入数据。在这个例子中，要写入的数字量接口是LED对应的管脚，写入的数据是目标状态，亮或灭。
digitalinputpullup pinMode(2, INPUT_PULLUP);数字引脚上拉,不用再接上拉下拉电阻和电源, Statechangedetection状态变换检测,if (buttonState != lastButtonState) {},lastButtonState = buttonState;这次与上次比较。取余符号为%。 tonekeyboard tone(pin, frequency, duration),tone(pin, frequency),间隔单位us...