Arduino Pro Micro (Atmega32u4) - BadUSB

Atmega32u4_BadUSB

#include <Keyboard.h>
#include <SoftwareSerial.h>

// Set up SoftwareSerial on pins 14 and 15 (RX, TX)
SoftwareSerial mySerial(14, 15);

void setup() {
  // Start serial communication with baud rate of 9600
  Serial.begin(9600);
  mySerial.begin(9600);

  // Send byte 0x1 to the other microcontroller to indicate Pro Micro is working
  mySerial.write(0x1);

  // Initialize the Keyboard library
  Keyboard.begin();
}

void loop() {
  if (mySerial.available() > 0) {
    String command = mySerial.readString();  //read until timeout
    command.trim(); 
    SendCommand(command);
  }
}

void SendCommand(String l)
{
  int space_1 = l.indexOf(" ");
  if (space_1 == -1)
  {
    Press(l);
  }
  else if (l.substring(0,space_1) == "STRING")
  {
    Keyboard.print(l.substring(space_1 + 1));
  }
  else if (l.substring(0,space_1) == "DELAY")
  {
    int delaytime = l.substring(space_1 + 1).toInt();
    delay(delaytime);
  }
  else if(l.substring(0,space_1) == "REM"){}
  else
  {
      String remain = l;

      while(remain.length() > 0)
      {
        int latest_space = remain.indexOf(" ");
        if (latest_space == -1)
        {
          Press(remain);
          remain = "";
        }
        else
        {
          Press(remain.substring(0, latest_space));
          remain = remain.substring(latest_space + 1);
        }
        delay(5);
      }
  }

  Keyboard.releaseAll();
}


void Press(String b)
{
  if(b.length() == 1)
  {
    char c = b[0];
    Keyboard.press(c);
  }
  else if (b.equals("ENTER"))
  {
    Keyboard.press(KEY_RETURN);
  }
  else if (b.equals("CTRL"))
  {
    Keyboard.press(KEY_LEFT_CTRL);
  }
    else if (b.equals("SHIFT"))
  {
    Keyboard.press(KEY_LEFT_SHIFT);
  }
    else if (b.equals("ALT"))
  {
    Keyboard.press(KEY_LEFT_ALT);
  }
    else if (b.equals("GUI"))
  {
    Keyboard.press(KEY_LEFT_GUI);
  }
    else if (b.equals("UP") || b.equals("UPARROW"))
  {
    Keyboard.press(KEY_UP_ARROW);
  }
    else if (b.equals("DOWN") || b.equals("DOWNARROW"))
  {
    Keyboard.press(KEY_DOWN_ARROW);
  }
    else if (b.equals("LEFT") || b.equals("LEFTARROW"))
  {
    Keyboard.press(KEY_LEFT_ARROW);
  }
    else if (b.equals("RIGHT") || b.equals("RIGHTARROW"))
  {
    Keyboard.press(KEY_RIGHT_ARROW);
  }
    else if (b.equals("DELETE"))
  {
    Keyboard.press(KEY_DELETE);
  }
    else if (b.equals("PAGEUP"))
  {
    Keyboard.press(KEY_PAGE_UP);
  }
    else if (b.equals("PAGEDOWN"))
  {
    Keyboard.press(KEY_PAGE_DOWN);
  }
    else if (b.equals("HOME"))
  {
    Keyboard.press(KEY_HOME);
  }
    else if (b.equals("ESC"))
  {
    Keyboard.press(KEY_ESC);
  }
    else if (b.equals("INSERT"))
  {
    Keyboard.press(KEY_INSERT);
  }
    else if (b.equals("TAB"))
  {
    Keyboard.press(KEY_TAB);
  }
    else if (b.equals("END"))
  {
    Keyboard.press(KEY_END);
  }
    else if (b.equals("CAPSLOCK"))
  {
    Keyboard.press(KEY_CAPS_LOCK);
  }
    else if (b.equals("F1"))
  {
    Keyboard.press(KEY_F1);
  }
    else if (b.equals("F2"))
  {
    Keyboard.press(KEY_F2);
  }
    else if (b.equals("F3"))
  {
    Keyboard.press(KEY_F3);
  }
    else if (b.equals("F4"))
  {
    Keyboard.press(KEY_F4);
  }
    else if (b.equals("F5"))
  {
    Keyboard.press(KEY_F5);
  }
    else if (b.equals("F6"))
  {
    Keyboard.press(KEY_F6);
  }
    else if (b.equals("F7"))
  {
    Keyboard.press(KEY_F7);
  }
    else if (b.equals("F8"))
  {
    Keyboard.press(KEY_F8);
  }
    else if (b.equals("F9"))
  {
    Keyboard.press(KEY_F9);
  }
    else if (b.equals("F10"))
  {
    Keyboard.press(KEY_F10);
  }
    else if (b.equals("F11"))
  {
    Keyboard.press(KEY_F11);
  }
    else if (b.equals("F12"))
  {
    Keyboard.press(KEY_F12);
  }
    else if (b.equals("SPACE"))
  {
    Keyboard.press(' ');
  } 
}