Author Topic: Searching a Software: One COM Port to n virtual Com Ports  (Read 16779 times)

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Offline pebe

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Searching a Software: One COM Port to n virtual Com Ports
« on: August 27, 2009, 05:29:01 PM »

I am searching for a com port multiplier  ;D
Means:
a Programm which listen to the com Port where the NMEA Data is comming to the PC
and then offers for example 2 virtual com ports and output the NMEA.
So i can use two software Programms, each connect to one virtual com port.
So both Programms can be used at the same time Live.

Anyone knows such a Programm ?

pebe


Offline RGecy

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #1 on: August 27, 2009, 10:40:42 PM »
There are certainly virtual COM port drivers, here is a Google Search for Virtual COM port.

Here is one I found: http://www.ftdichip.com/Drivers/VCP.htm

Good Luck,

Robert
« Last Edit: August 27, 2009, 10:42:54 PM by RGecy »
Humminbird Guru and Forum Administrator

Offline Chiboo

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #2 on: August 28, 2009, 03:15:58 AM »
This software named as GPSGate.   

"Using Franson GpsGate it is possible to share one GPS between many   
      applications running on a laptop or handheld computer. Today’s     
    solutions only allow one application to take exclusive access of a   
     connected GPS. As more applications are becoming position aware,   
                   GPS sharing will become a necessity.                   "

Offline pebe

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #3 on: August 28, 2009, 06:27:09 PM »
Thank you all.

Cant believe that there are so many Solutions available.
I mentioned that this was a unpopular thing... but i am wrong   ;D
Now i will look at the search results from google, if there are Opensource or even free Programms available.

I also got an idea:

Because ther is no handshake needed, i will just contact two serial ports together, GRND and Transmit from the Unit to
each GND and RCV of the two serial ports.
This should work i think, because i dont have to deal with handshake signals (RTS/CTS and so on.)

Offline radudragusi

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #4 on: February 21, 2010, 02:27:34 PM »
If the solution is not working I'll build a small box for you.

Offline Jolly Roger

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #5 on: February 21, 2010, 02:54:22 PM »
PeBe,
did you find any solution with your software? If so, what is it?

Regards / Harry
YES,......
WE SCAN!

Offline keizerh

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #6 on: February 21, 2010, 04:17:20 PM »
Meindert (20 km from here ) builds them.

Virtualplex to create up to many virtual com ports from 1 (used this for about flawless years)

Miniplex to isolate and buffer nmea in to nema out, rs232 out or usb out.

http://www.shipmodul.com/en/index.html



hendrik

Offline pebe

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #7 on: February 21, 2010, 04:58:47 PM »
Yes, for Connections without Handshakes, its possible to connect the two serial Ports of the PC to the same Source :-)
No need of extra Software oder hardware.
If your Notebook has only one Serial Conector, try an USB2Serial an Y-Wire the 3 Lines.

BUT,
I have tested this only once a time to check if this Solution works with wires connected using (dont know the right word) let me say hand wireing together.
This was told to my by a fried, he said he gives no Guarantee that this will work with more than two Serial Inputs to the Notebook because he has no specification on how much mA the Ouput from the HB Unit can provide.
He said it should be work with more than two but...this is untested.

At the Moment i never went out on the Water with the Notebook so i couldnt say if this works stable and is a 100% Solution.
I will give it a try in this Summer.

It sound really nice, because it cost only another USB2Serial Adapter and two DB9 SUB Connectors to build the Y-Wire.
« Last Edit: February 21, 2010, 04:59:48 PM by pebe »

Offline Jolly Roger

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #8 on: February 22, 2010, 03:00:09 AM »
Thanks Peter,

we are working on our end to get my Laptop up to speed for navigation, but as it looks like,  I ran into a software problem  ???


Regards / Harry
YES,......
WE SCAN!

Offline pebe

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Re: Searching a Software: One COM Port to n virtual Com Ports
« Reply #9 on: February 22, 2010, 03:44:36 AM »
Ill will send you a PN, so we can talk in German. ;)


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