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FabulaTech Forum Serial Port Solutions Virtual Serial Port Kit (Moderators: Sergey_Jarovski, Tim_GaliullinFT, Andrew) virtual port pair working unexpectedly Previous topic | Next topic
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virtualuser
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virtual port pair working unexpectedly
on: Jul 7th, 2009, 12:13pm 		Quote Quote  Modify Modify
hi, using v5.0.1, i have a pair of virtual serial ports (eg. com10 to com11) and using this pair between two apps.  i would change app1 baudrate to 19200 and keep app2 baudrate to 9600.  i expected communication to fail - but communication did not fail - it continued to send/receive message  Huh.  i've also played with properties - toggle on bitrate emulation, full handshake, toggle on DTR to RI and DTR to DCD.  but communication on the virtual port pair continues to work.   when i hook up the two apps with physical serial ports and cable and then change the baudrate on 1 app - communication fails as expected.  what's up with virtual ports?  btw, if you want to see messages just pass through, virtual ports a great help.
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George_White
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Re: virtual port pair working unexpectedly
Reply #1 on: Jul 8th, 2009, 1:46am 		Quote Quote  Modify Modify
virtualuser,
 
Currently our driver does not allow terminating the connection when baud rates are different. In emulating baud rate we added delays in data transfer in order to correspond to the hardware com port baud rate. If exact emulation of a hardware com port is a necessary requirement for you, we'll keep this in mind for our future releases of the software.
 
Thanks!
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virtualuser
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Re: virtual port pair working unexpectedly
Reply #2 on: Jul 8th, 2009, 9:26am 		Quote Quote  Modify Modify
hi, thanks for quick reply Smiley.  that would be nice.  but not necessary for us.  we can't wait for fix and moving onto digiports.  thank you!
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Sergey_Jarovski
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Re: virtual port pair working unexpectedly
Reply #3 on: Aug 26th, 2015, 1:52am 		Quote Quote  Modify Modify
Hi !
The full emulation of hardware communication can't be realize in VSPK.
We are using the buffering of data on the driver level if baud rates are different.
Please describe in detail the requirements for your project.
I would gladly see if we can help you with any of our solutions.
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Sergey Jarovski

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