byte getChar(bool willBlock);
Return the ASCII code of pressed key.
If willBlock is true, will wait until a key is pressed and return the ASCII code otherwise (false), returns 0 if no key pressed.
Alone or with Shift (both) : returns regular ASCII code of the key
Ctrl + letter keys: ASCII 1 to 26.
Ctrl + num key from 0 to 4: ASCII 27 to 31
Fctn + key: keycode + 127
"Alt" key is not taken in account (but can be easily added).
Feel free to change the code to adapt the function to your needs!
