Sent Enter/Alt/Shift command

[Nicolas-Ramthum]

Hello,

How can I sent commands like Enter (Carriage Return)/Alt/Shift using HoodLoader2?

I've been tryed to use Keyboard library ([Keyboard.begin()] (https://www.arduino.cc/reference/en/language/functions/usb/keyboard/keyboardbegin), but Arduino IDE don't alowed to use this library for Arduino Uno.

Tried to use the commands above, but any worked. Someone knows how to?

Serial.write( '\r' );
Serial.write('d', CHAR);
Serial.write('d', DEC);

Either any option above using Serial.println also doesn't work.