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Author Topic: GPS Transfer Rate  (Read 2326 times)

GS_TECH01

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GPS Transfer Rate
« on: June 02, 2011, 11:52:00 am »

According to our engineers, the baud rate is 230400,N,8,1.
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Rodney

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Re: GPS Transfer Rate
« Reply #1 on: September 07, 2011, 10:33:30 am »

I wrote an application for the DG-100 that read data using the ActiveX control MSCOMM.  However, when I try to set MSCOMM to 230400, I get an invalid property error.  Can MSCOMM be set to communicate at 230400 or do I need to find another way to pull data from the DG-200?

Thanks in advance for any suggestions.
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GS_TECH01

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Re: GPS Transfer Rate
« Reply #2 on: September 07, 2011, 12:45:49 pm »

Just a couple of questions about this:

Can you please provide more info about MSCOMM? Any specs or datasheet?
Also, can you elaborate on the error message that you're getting? Basically, what does it mean?
Have you tried using the application that came with the device? You can download the program from here: http://www.usglobalsat.com/store/download/677/datacenter.zip
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Rodney

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Re: GPS Transfer Rate
« Reply #3 on: September 07, 2011, 02:16:36 pm »

Thanks for your reply.

MSCOMM is the Active X control provided by Microsoft for serial communications.  The web page below should have all specifications.

http://msdn.microsoft.com/en-us/library/aa259393%28v=vs.60%29.aspx

The error "invalid property" means that MSCOMM will not accept a baud rate of 230400 (see http://support.microsoft.com/default.aspx?scid=kb;en-us;108928 for permissible rates);)

The application that came with the device works fine, but my application (which works fine with the DG-100) has a slightly different purpose (mileage calculation and tracking).

I appreciate you taking time to look into this issue for me.
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GS_TECH01

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Re: GPS Transfer Rate
« Reply #4 on: September 07, 2011, 03:51:07 pm »

Thanks for the info. Let me go ahead and contact our engineers about this.
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pixelk

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Re: GPS Transfer Rate
« Reply #5 on: September 07, 2011, 03:55:05 pm »

The problem is that 230400bps is not a "standard" speed, an so it may not be supported by the activeX you are using. I was able tu succesfully talk to the DG-200 once I got my hand on a component able to use this uncomon speed. I use TComPort for Delphi.
If you use Visula basic (pardon me if it's not the case), you may be interested in this link : http://www.mev.co.uk/pages/Support/VB-Baud.html
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GS_TECH01

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Re: GPS Transfer Rate
« Reply #6 on: September 15, 2011, 11:00:05 am »

Hello Rodney,

Our engineers are wondering what kind of software are you developing for your own application. Possibly, provide some specs/datasheet about it. If you're using Visual Basic, they suggested to follow pixelk' suggestion for trial testing:

The problem is that 230400bps is not a "standard" speed, an so it may not be supported by the activeX you are using. I was able tu succesfully talk to the DG-200 once I got my hand on a component able to use this uncomon speed. I use TComPort for Delphi.
If you use Visula basic (pardon me if it's not the case), you may be interested in this link : http://www.mev.co.uk/pages/Support/VB-Baud.html
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Rodney

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Re: GPS Transfer Rate
« Reply #7 on: September 20, 2011, 02:59:18 pm »

Thanks for checking into this for me.

I am developing using Visual FoxPro and for the DG-100 was able to use MSCOMM from Microsoft.

The suggested page was helpful and I guess I will have to try to figure how how to access the Windows API from FoxPro or come up with another approach.

Thanks again.

Rodney
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GS_TECH01

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Re: GPS Transfer Rate
« Reply #8 on: September 20, 2011, 03:35:23 pm »

Thanks for the update. Just let us know if you have any questions. You can also possibly check with pixelk (http://www.usglobalsat.com/forum/index.php?topic=3893.msg10726#msg10726), wherein he developed an application for the DG-200.

Again, thanks.
« Last Edit: September 20, 2011, 03:38:16 pm by USG_TECH10 »
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