Prvni ulozeni z chegewara githubu

libraries/USB/examples/Keyboard/KeyboardMessage/KeyboardMessage.ino

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+/*
+  Keyboard Message test
+
+  For the Arduino Leonardo and Micro.
+
+  Sends a text string when a button is pressed.
+
+  The circuit:
+  - pushbutton attached from pin 0 to ground
+  - 10 kilohm resistor attached from pin 0 to +5V
+
+  created 24 Oct 2011
+  modified 27 Mar 2012
+  by Tom Igoe
+  modified 11 Nov 2013
+  by Scott Fitzgerald
+
+  This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/KeyboardMessage
+*/
+#if ARDUINO_USB_MODE
+#warning This sketch should be used when USB is in OTG mode
+void setup(){}
+void loop(){}
+#else
+
+#include "USB.h"
+#include "USBHIDKeyboard.h"
+USBHIDKeyboard Keyboard;
+
+const int buttonPin = 0;          // 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_PULLUP);
+  // initialize control over the keyboard:
+  Keyboard.begin();
+  USB.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 == LOW)) {
+    // 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;
+}
+#endif /* ARDUINO_USB_MODE */