I recently bought a USB to serial port adapter for experimenting with. Trouble is, I don't know how to read and write to it. There were no intructions. I installed the drivers with a cd but it only told me it was COM4. Is that enough information for me to use it with C++? What would the command be to read or write? I'd sure appreciate any help!

 

With the driver the USB dongle should be seen as any "real" serial port from windows. So just use standard serial functions. I am sure you can find out how via Google

 

If you're using the Windows API then this is a great link for the basics of serial coms http://www.robbayer.com/files/serial-win.pdf. A combination of that and MSDN will see you through...

 

If you're using the Windows API then this is a great link for the basics of serial coms http://www.robbayer.com/files/serial-win.pdf. A combination of that and MSDN will see you through...

Thanks! Just what I needed to know!