Since the library is made to communicate with FTDI/Arduino (which are always 8N1) I don't see the use of changing those settings.
Hi Toley,
I agree the Arduino is fixed at 8N1 but the FTDI devices are not necessarily fixed & are usually settable, e.g. if you plug a FTDI USB to Serial adapter into your desktop pc & open the relevant comport using something like hyperterminal you are given the choice to select these parameters.
Yes most new devices are fixed to 8N1 but there definately are legacy devices out there which are not 8N1. Being able to set data bits to 7 atleast will cover older devices. Also don't forget parity, hardware handshaking etc!
Thanks, Tom