KeyboardSerial.ino

/*
  Keyboard test

  Reads a byte from the serial port, sends a keystroke back.
  The sent keystroke is one higher than what's received, e.g. if you send a,
  you get b, send A you get B, and so forth.

  The circuit:
  - none

  created 21 Oct 2011
  modified 27 Mar 2012
  by Tom Igoe

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/KeyboardSerial
*/
#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;

void setup() {
  // open the serial port:
  Serial.begin(115200);
  // initialize control over the keyboard:
  Keyboard.begin();
  USB.begin();
}

void loop() {
  // check for incoming serial data:
  if (Serial.available() > 0) {
    // read incoming serial data:
    char inChar = Serial.read();
    // Type the next ASCII value from what you received:
    Keyboard.write(inChar + 1);
  }
}
#endif /* ARDUINO_USB_MODE */