/* 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 */