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44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
/*
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Keyboard Button test
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Sends a text string when a button is pressed.
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The circuit:
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* pushbutton attached from pin 4 to +5V
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* 10-kilohm resistor attached from pin 4 to ground
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created 24 Oct 2011
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by Tom Igoe
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/KeyboardButton
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*/
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const int buttonPin = 4; // input pin for pushbutton
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int previousButtonState = HIGH; // for checking the state of a pushButton
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int counter = 0; // button push counter
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void setup() {
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// make the pushButton pin an input:
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pinMode(buttonPin, INPUT);
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}
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void loop() {
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// read the pushbutton:
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int buttonState = digitalRead(buttonPin);
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// if the button state has changed,
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if ((buttonState != previousButtonState)
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// and it's currently pressed:
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&& (buttonState == HIGH)) {
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// increment the button counter
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counter++;
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// type out a message
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Keyboard.print("You pressed the button: ");
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Keyboard.print(counter);
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Keyboard.println(" times.");
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}
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// save the current button state for comparison next time:
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previousButtonState = buttonState;
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}
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