On Fri, Jan 20, 2006 at 01:20:26PM +0530, AsHwAtH wrote: > Hi > > I am totally new to USB. > Is it like writing to a serial port COM1, COM2... ? Not at all, see the previously mentioned LDD3 book chapter for details on why not. > I am writing an application to read and write data to a USB port, Can anyone > help me, There is no such thing from an application (or even from an OS) view of a "USB port". > 1.what library/ API do i need to use? > 2.can i have a generic USB read and write function (C/C++ function) that can > be ported to any platform? Look at libusb, it's been ported to all sorts of different oses, and should do what you want. good luck, greg k-h -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/