Using a Virtual Serial Driver to Integrate GPS Hardware
The GPS Intermediate Driver interacts with GPS hardware using the CreateFile and ReadFile functions. This means that, to be accessible to the GPS Intermediate Driver, GPS hardware must use or provide a device driver that makes the hardware appear through a serial interface/COM port.
Specifically, for GPS hardware that interacts through a physical serial connection, the serial driver available with Windows CE is sufficient. For GPS hardware that interacts through some other means, like through a Compact Flash, SDIO, Bluetooth, or other peripheral interface, the GPS hardware manufacturer must provide a virtual serial device driver that emulates a COM port.
For more information about the means by which the GPS Intermediate Driver interacts with GPS hardware, see GPS Intermediate Driver Architecture. For general information about implementing a virtual serial driver the emulates a COM port, see Stream Interface Drivers.
See Also
Integrating GPS Hardware with the GPS Intermediate Driver
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