Debounce Each time the input pin goes from LOW to HIGH (e.g. because of a push-button press...
if (buttonState == HIGH) { ledState = !ledState; } } } // set the LED: digitalWrite(ledPin, ledState); // save the reading. Next time through the loop, it'll be the lastButtonState: lastButtonState = reading; } (2)注释 /* Debounce 去抖 Each time the input pin goes from LO...
if (buttonPushCounter % 4 == 0) { digitalWrite(ledPin, HIGH); } else { digitalWrite(ledPin, LOW); } } [Get Code] 更多 pinMode() digitalWrite() digitalRead() millis() if BlinkWithoutDelay - 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...
[Get Code] 更多 array() for() tone() BlinkWithoutDelay - 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 DigitalInputPullup - 示范怎么用pinMode()来上拉引脚 StateChangeDetection - 记录按键按下的次数 toneMelody - 用压电扬声器弹奏一个旋律 ton...
[Get Code] 更多 pinMode() digitalWrite() digitalRead() if else BlinkWithoutDelay - 闪烁一个LED灯而不使用delay()函数延时 Debounce - 读取一个按键状态,并滤掉噪音 DigitalInputPullup - 示范用pinmode()来定义上拉输入引脚 StateChangeDetection - 记录按键按下的次数 ...
创建一个名为 readButton : boolean readButton(int pin) { // check and debounce buttons if (digitalRead(pin) == HIGH) { delay(10); if (digitalRead(pin) == HIGH) { return true; } } return false; } 这需要一个大头针,并检查是否已按下它。它只是返回 TRUE 或 FALSE 。它还包含一些软件反...
digitalWrite(LED,ledOn);//put your main code here, to run repeatedly:} 首先,我们假设没有抖动,只关注 loop()函数的部分, currentButton = debounce(lastButton); 这时等价于 current = digitalRead(BUTTON); 第一次按——开灯 首先需要想的是: ...
Inside your code, Button.read(); reads your button state and returns HIGH or LOW after debouncing it. It should always return HIGH when the button is pressed, and LOW otherwise. This will turn the led on pin 13 ON when the button is pressed and debounced, it stays on until you releas...
Let’s add a few lines to our previous code.The improved code#define LED_PIN 8 #define BUTTON_PIN 7 byte lastButtonState = LOW; byte ledState = LOW; unsigned long debounceDuration = 50; // millis unsigned long lastTimeButtonStateChanged = 0; void setup() { pinMode(LED_PIN, OUTPUT)...
pinMode(BUTTON_PIN, INPUT_PULLUP); } voidloop() { Serial.println(digitalRead(BUTTON_PIN)); delay(100); } Let’s break down this code line by line. Code to setup the push button #define BUTTON_PIN 4 First we create a #define for the button pin, so we don’t need to write “4...