but i just want to send and recieve simple data through usb. and for that i dont think i need any protocol.
cant i write just a simple program in Qt say one for server and one for client and then connect the two pcs through their usb and then start the data transfer?.....actually i dont know anything about data transfer through either usb or serial port.
can u please help how to do make a correct and systematic approach ? if not usb then atleast can Qt help with serial communication??