Lab2
使用按鍵控制 LED 燈號
實驗目的
讓按鍵控制燈號切換燈號。
/*
Button
Turns on and off a light emitting diode(LED)
connected to digital pin 13, when pressing a
pushbutton attached to pin 2.
The circuit:
* LED attached from pin 13 to ground
* pushbutton attached to pin 2 from +5V
* 10K resistor attached to pin 2 from ground
* Note: on most Arduinos there is already an LED
on the board attached to pin 13.
created 2005 by DojoDave <http://www.0j0.org>
modified 30 Aug 2011 by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Button
*/
int buttonState = 0;
void setup()
{
pinMode(2, INPUT);
pinMode(13, OUTPUT);
}
void loop()
{
// read the state of the pushbutton value
buttonState = digitalRead(2);
// check if pushbutton is pressed. if it is, the
// buttonState is HIGH
if (buttonState == HIGH) {
// turn LED on
digitalWrite(13, HIGH);
} else {
// turn LED off
digitalWrite(13, LOW);
}
delay(10); // Delay a little bit to improve simulation performance
}
作業
作業
條件1
按鍵控制讓(二顆)燈號閃爍
條件2
按鍵控制
(亮==》暗)
(暗==》亮)