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Talking with USB GPS in VB.NetHi, I would like know how make the 'conversation' between VB.Net and Garmin
USB GPS, someone know work that?. I have a etrex Vista Cx (USB cable connector), I would like make a program for get the current GPS position, but I don´t understand how send commands or receive data for this port. Thanks in advance for any help, I´m very lost. Freddy Coal Hi,
There is one "standard" GPS protocol, NMEA-0183. This serial protocol is fairly easy to work with. However, it is even easier if you download DecodeGPS from my homepage. The DecodeGPS .NET dll is free, and I include example code. The source code for the dll is in my book (see below), along with additional information. IMO, you should make sure that your GPS receiver outputs data using this protocol (commands also may be issued to the receiver using NMEA-0183, though very few applications require that the GPS receiver be programmed). Garmin also has a proprietary binary protocol. It can be used instead of NMEA-0183. Again, there are very few applications that would require use of this binary protocol, and it is much more difficult to use than the ASCII (NMEA-0183) protocol. I suspect that your actual receiver uses the NMEA protocol by default (and it may not even support the binary one, so that may not even be an issue). Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Thanks Dick, very interesting DLL; I know the NMEA protocol, but I don't
understand how make the communitaction with the USB port. I download the GPS Decoder example code, but he send errors, because I don´t have the MapPoint. Your DLL work with USB or only with serial port?. Thanks in advance. Freddy Coal Show quoteHide quote "Dick Grier" <dick_grierNOSPAM@.msn.com> wrote in message news:uEFOluZjHHA.5044@TK2MSFTNGP05.phx.gbl... > Hi, > > There is one "standard" GPS protocol, NMEA-0183. This serial protocol is > fairly easy to work with. However, it is even easier if you download > DecodeGPS from my homepage. The DecodeGPS .NET dll is free, and I include > example code. The source code for the dll is in my book (see below), > along with additional information. IMO, you should make sure that your > GPS receiver outputs data using this protocol (commands also may be issued > to the receiver using NMEA-0183, though very few applications require that > the GPS receiver be programmed). > > Garmin also has a proprietary binary protocol. It can be used instead of > NMEA-0183. Again, there are very few applications that would require use > of this binary protocol, and it is much more difficult to use than the > ASCII (NMEA-0183) protocol. I suspect that your actual receiver uses the > NMEA protocol by default (and it may not even support the binary one, so > that may not even be an issue). > > Dick > > -- > Richard Grier, MVP > Hard & Software > Author of Visual Basic Programmer's Guide to Serial Communications, Fourth > Edition, > ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March > 2006. > See www.hardandsoftware.net for details and contact information. Hi,
You can get a demo version of MapPoint Europe, if you want. I will create a simpler demo tomorrow that simply places the location (lat/lon) in a textbox. I will let you know when it is available. What version of Visual Studio are you using? The actual serial port code depends on this (if VS 2005, you can use the built-in serial port control, if using 2003, then download DesktopSerialIO.dll from my homepage). Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Thanks for your answer Dick, I´m using VS2005, I know how use the serial
port, but I don´t know how get data with the USB port. My GPS is Garmin etrex Vista Cx - USB connector. For the MapPoint, maybe you can try with MapWindow ( http://www.mapwindow.org/ ) it's a really excellent tool and it´s free. Thanks in advance if you can help to get the data using the USB port. Freddy Coal Show quoteHide quote "Dick Grier" <dick_grierNOSPAM@.msn.com> wrote in message news:ObnWt0bjHHA.4516@TK2MSFTNGP03.phx.gbl... > Hi, > > You can get a demo version of MapPoint Europe, if you want. > > I will create a simpler demo tomorrow that simply places the location > (lat/lon) in a textbox. I will let you know when it is available. > > What version of Visual Studio are you using? The actual serial port code > depends on this (if VS 2005, you can use the built-in serial port control, > if using 2003, then download DesktopSerialIO.dll from my homepage). > > Dick > > -- > Richard Grier, MVP > Hard & Software > Author of Visual Basic Programmer's Guide to Serial Communications, Fourth > Edition, > ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March > 2006. > See www.hardandsoftware.net for details and contact information. > Hi,
A USB serial adapter (such as is used by your GPS receiver) is just another serial port. Instead of a hardware UART, it uses a virtual serial port device driver that emulates the hardware. You treat it like any other serial device. I have decided to create a control that encapsulates the serial port class, GPS receiver detection, and GPS (NMEA-0183) decoding. All that you will have to do is to drop it on a Winforms application, call the EnableGPS method, and it will automatically detect your GPS receiver, and start generating GPSDecode events that you can use to query its built-in properties for Lan/Lon/Speed/Course/Date&Time, etc. I will post it on my website on Monday, so look for it then. Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Freddy,
I have posted the GPSControl that I mentioned to my web site. It requires only one line of code to strart it up, and as few as two lines of code to read the decoded GPS location (Lat/Lon). Naturally, there are more "things" than just location data, if you need them. It does automatic GPS detection, so you don't have to do anything tricky to use it. Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Dick, I try your library, but don't work for me. I use your program, but the
program doesn't establish connection. Maybe this works with a Serial connector, but my GPS have a direct connection to the USB port; I read in internet that the new Garmin don't have the NMEA. http://www.oreillynet.com/xml/blog/2004/10/garmin_gps_goes_more_proprieta.html Thanks in advance for your help. My Best regards, Freddy Coal Show quoteHide quote "Dick Grier" <dick_grierNOSPAM@.msn.com> wrote in message news:OdjShn1jHHA.2552@TK2MSFTNGP06.phx.gbl... > Freddy, > > I have posted the GPSControl that I mentioned to my web site. It requires > only one line of code to strart it up, and as few as two lines of code to > read the decoded GPS location (Lat/Lon). Naturally, there are more > "things" than just location data, if you need them. It does automatic GPS > detection, so you don't have to do anything tricky to use it. > > Dick > > -- > Richard Grier, MVP > Hard & Software > Author of Visual Basic Programmer's Guide to Serial Communications, Fourth > Edition, > ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March > 2006. > See www.hardandsoftware.net for details and contact information. > Hi,
>> Maybe this works with a Serial connector, but my GPS have a directconnection to the USB port; I read in internet that the new Garmin don't have the NMEA. << If it doesn't output NMEA, then it can only be used with proprietary software (or you can write your own, if it uses the Garmin "standard" binary protocol). What documentation do they offer for the protocol that it does use? BTW, as I said before... USB GPS receivers ARE serial devices. That is, they emulate a standard serial port via the device driver that is installed with the device (look in Device Manager under Control Panel then view Ports. You should see it listed there). Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. "Dick Grier" <dick_grierNOSPAM@.msn.com> wrote in No not all - some of the newer Garmins (i.e. NUVI) show up as mass storage news:#HMCKgRkHHA.4936@TK2MSFTNGP03.phx.gbl: > BTW, as I said before... USB GPS receivers ARE serial devices. That > is, they emulate a standard serial port via the device driver that is > installed with the device (look in Device Manager under Control Panel > then view Ports. You should see it listed there). devices and have no NEMA serial interfaces :( Hi,
You are right, if is isn't designed as a serial device, then there is no (practical)way to interface with it. Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Dick, I know the binary protocol, but I don´t understand how make the
connection with the USB GPS with VB.Net; You know how make that?. My GPS not emulate a serial device, under ports (Device Manager) don't appear nothing different when I connect the GPS. Thanks in advance for any help. Freddy Coal Show quoteHide quote "Dick Grier" <dick_grierNOSPAM@.msn.com> wrote in message news:%23HMCKgRkHHA.4936@TK2MSFTNGP03.phx.gbl... > Hi, > >>> > Maybe this works with a Serial connector, but my GPS have a direct > connection to the USB port; I read in internet that the new Garmin don't > have the NMEA. > << > > If it doesn't output NMEA, then it can only be used with proprietary > software (or you can write your own, if it uses the Garmin "standard" > binary protocol). What documentation do they offer for the protocol that > it does use? > > BTW, as I said before... USB GPS receivers ARE serial devices. That is, > they emulate a standard serial port via the device driver that is > installed with the device (look in Device Manager under Control Panel then > view Ports. You should see it listed there). > > Dick > > -- > Richard Grier, MVP > Hard & Software > Author of Visual Basic Programmer's Guide to Serial Communications, Fourth > Edition, > ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March > 2006. > See www.hardandsoftware.net for details and contact information. > Hi,
No. If it is a proprietary interface, then probably they do not intend that you use it. If you can get programming information from Garmin, then there may be a way. If not, then it would cost FAR too much to even consider. Why not just buy a different GPS receiver? You probably can get one for less than $60. Dick -- Richard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. 
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