Nan

Thanks for your reply. I think you got ahead of me:) I am still trying to figure out how to start writing a driver using the Instrument I/O in the LabView. I don't understand the concepts very well about communicating to the controller with the PC. Is there a book or some kind of source where I can go and learn to write a driver? I know I will need to have the ASCII codes of the serial port and the commands, but before that, where/how do I start writing the driver? It seems very complicated, with the initializing, writing, reading, and closing functions. And it is really frustrating that I havn't got anything day for the last few days just trying to figure out how to write the driver. I am glad I found this site and you! Do you know any sort of source where I can find step-by-step tutorial to show me how to use the the serical functions listed under Instrument I/O in LabVIEW? Thanks, Nan P.S. Anybody live around Morgantown, WV? Maybe we can have a small meeting or something to solve things more quickly:)

Hi, I just started working on LabVIEW. I am trying to communicate with a shutter controller through serial ports. I can't find the driver I needed for this particular controller in the Instrument Library provided by NI. And I can't find anything that helps me to start writing a driver. Is there a site, book, or anything that will show me how to start writing a driver for a serial port? Thanks, Nan