1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/*
Keyboard Button test
Sends a text string when a button is pressed.
The circuit:
* pushbutton attached from pin 2 to +5V
* 10-kilohm resistor attached from pin 4 to ground
created 24 Oct 2011
modified 27 Mar 2012
by Tom Igoe
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/KeyboardButton
*/
const int buttonPin = 2; // input pin for pushbutton
int previousButtonState = HIGH; // for checking the state of a pushButton
int counter = 0; // button push counter
void setup() {
// make the pushButton pin an input:
pinMode(buttonPin, INPUT);
// initialize control over the keyboard:
Keyboard.begin();
}
void loop() {
// read the pushbutton:
int buttonState = digitalRead(buttonPin);
// if the button state has changed,
if ((buttonState != previousButtonState)
// and it's currently pressed:
&& (buttonState == HIGH)) {
// increment the button counter
counter++;
// type out a message
Keyboard.print("You pressed the button ");
Keyboard.print(counter);
Keyboard.println(" times.");
}
// save the current button state for comparison next time:
previousButtonState = buttonState;
}
|
