Microsoft Windows
3
L3-1(5)
The section [Strings] is mandatory and it is used to define each string key
token indicated by %string name% in the INF file.
Refer to the MSDN online documentation on this web page for more details about INF
sections and directives: http://msdn.microsoft.com/en-us/library/ff549520.aspx .
You will be able to modify some sections in order to match the INF file to your device
characteristics, such as Vendor ID, Product ID and human-readable strings describing the
device. The sections are:
Models section
[Strings] section
To identify possible drivers for a device, Windows looks in the Models section for a device
identification string that matches a string created from information in the device’s
descriptors. Every USB device has a device ID, that is a hardware ID created by the
Windows USB host stack from information contained in the Device descriptor. A device ID
has the following form:
USB\Vid_xxxx&Pid_yyyy
xxxx , yyyy , represent the value of the Device descriptor fields “idVendor” and “idProduct”
respectively (refer to the Universal Serial Bus Specification, revision 2.0, section 9.6.1 for
more details about the Device descriptor fields). This string allows Windows to load a driver
for the device. You can modify xxxx and yyyy to match your device’s Vendor and Product
IDs. In Listing 2-1, the hardware ID defines the Vendor ID 0xFFFE and the Product ID
0x1234 .
Composite devices, formed of several functions, can specify a driver for each function. In
this case, the device has a device ID for each interface that represents a function. A device
ID for an interface has the following form:
USB\Vid_xxxx&Pid_yyyy&MI_ww
49
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