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...
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...
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...
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. 如果引脚被设置为INPUT,digitalWrite()会激活输入引脚的上拉电阻。
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...
//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(){ ...
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。 void setup() { pinMode(13, OUTPUT); // sets the digital pin 13 as output } void loop() { digitalWrite(13,...
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...
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。
void setup(){ // initialize digital pin RED_LED as an output.pinMode(RED_LED, OUTPUT);pin...