Garmin Mobile PC on Asus R2H with GPSGate

Windows XP is the OS used here.

Before anything else, you need this tool call GPSCtrl.exe to activate or deactivate your built in GPS. This tool can be obtain freely from here

Garmin’s software need some specific hardware device, that is, Garmin GPS to be able to use. To overcome this limitation, we will harness the power of Franson GPSGate. The problem is, Garmin Mobile PC (GMPC) is not able to recognize the ‘virtual com port’ created by GPSGate. Again we will try to solve this problem with the use of com0com free utility.

Impatient way

1. Prepare all the software mentioned above.
2. Extract gpsCtrl to C:\Tools folder
3. Install com0com. After installation, this utility will automatically add 2 virtual com port, CNCA0 and CNCB0. Rename the port to any com number with setup (GUI interface). For me, I rename it into COM25 for CNCA0 and COM26 for CNCB0
4. Install GPSGate, cancelled the setup wizard if it appear
5. Activate the GPS with gpsOn.bat from the gpsCtrl utility
6. Run GpsGate.
7. At the input tab, choose COM2 (This should be the default port your internal GPS connected to). Klik Run. If nothing wrong you should see “Running OK!” and “GPS data is coming in.” Also at the system tray, you’ll see the icon’s color is yellow.
8. At the output tab add “COM Port” (NOT VIRTUAL or GARMIN emulated), and assigned to COM25 (was CNCA0).
9. Reboot the computer.
10. Activate GPS, run GpsGate and then install and run GMPC
11. Stop the auto detection of GPS from Settings > System > Remote GPS > Disable
12. Choose serial port aka COM26 (was CNCB0) and klik Enable
13. Your Garmin should be able to get connected to GPS for now.

So, the flow is like the diagram below

INTERNAL GPS -> GpsGate -> COM25(CNCA0) -> COM26(CNCB0) -> GMPC

GpsGate => To emulate Garmin GPS to run with Garmin software

com0com => NULL COM Port emulator

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