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Serial virtual port manager

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#1 Soulessdeath



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Posted 09 December 2016 - 03:09 PM

Was not sure if this was the correct spot to ask this but it is windows related as need it on windows OS

I am looking  for a reliable free program to receive serial rs232 data from a Serial to usb converter and transmit it back to a input on the computer as a new com port, Having some issues with a program not liking the data straight from the com port that the Serial to usb makes and was suggested to try this way, but need to find a good program for it.

Data rx on pc - into virtual program- out on a virtual port and into main program.

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#2 Jeruselem



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Posted 09 December 2016 - 03:34 PM

In fact, Windows is doing this for you already! Once you have USB to serial driver loaded, it creates virtual ports for you so your main program can use the virtual serial port.


USB to serial port adaptors by default use virtual serial ports like COM20 - you can make these like COM1 to COM4 provided your PC does not have any COM ports at all. Some programs don't handle ports other than COM1 to 4 because they were written where they were no virtual serial ports.

Edited by Jeruselem, 09 December 2016 - 04:42 PM.

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#3 Rybags



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Posted 09 December 2016 - 04:42 PM

An alternative could be to make an adaptor from a level converter IC and hang it off the parallel port.  But problem there, parallel port = legacy which is being gotten rid of, plus it's likely to be a bitbanging situation with custom driver needed (though there's probably stuff already out there).

#4 Master_Scythe



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Posted 12 December 2016 - 09:26 AM

It's more likely the adapter is still defaulted to a fast data speed.

Go into the virtual (usb) com port in Device Manager, and turn the speed down a LOT.

You'll also find tons of modes for it to operate in, you'll just need to test until you find the mode it likes.

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#5 Rybags



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Posted 12 December 2016 - 09:40 AM

I've not used a USB type, but another potential problem is that it mightn't necessarily have hardware flow control.  Some adaptors don't support the full set of control lines, and also you should check emulated settings as well as the bitrate, parity, #of bits per byte etc.

#6 @~thehung



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Posted 07 January 2017 - 12:29 PM

what are you using?


this is free: Q Serial Terminal - Basic serial (RS232) terminal program

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