I have a Panasonic Tablet that runs Windows 10 x64, and it has a UHF RFID chip inside that's made available through a virtual COM PORT (like a USB - rs232 cable) - 19200 bps, 8 bits, no parity, 1 stop bit.
How can I access this COM port from a Windows App? I want to develop a simple touch app, I know how to communicate to this chip, but I can't find out how to just open the connection. Which language is better for developing an app (for tablet use) that has this hardware communication?
Windows OS has a set of API functions that allows to work with any COM port: https://msdn.microsoft.com/en-us/library/windows/desktop/aa363194%28v=vs.85%29.aspx
The CreateFile API function allows to open the necessary port and communicate through it.
You may use any popular programming language. Most of them has a build-it or 3-rd party library.