Teledyne LeCroy USB Chief - File Based Decode Manual - Manual (Page 9)

5
C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
defines the Human Interface Device (HID) class code.
GroupType=Vendor
GroupType=Vendor indicates that the file defines a set of vendor-specific USB
requests. This group type also requires VendorID and ProductID entries.
These values are used to uniquely identify the Vendor Decoding group when it is
associated with Request Recipients in a trace file. The value for
VendorID is the
assigned vendor ID. The value for ProductID doesn't actually have to match the
real product ID for the device. For example:
GroupType=Vendor
VendorID=0x0423
ProductID=0x000D
AllRequests
The AllRequests keyword is used to specify the bRequest values for all of
the requests described in the .req file. The AllRequests definition uses the
following format:
AllRequests=
{
<bRequest>=<RequestNameString>
...
}
The value bRequest is is the USB-assigned value, and is represented numerically.
RequestNameString is the textual representation of bRequest . It also rep-
resents the name of the request that will appear in the Request Decoding dialog. For
example:
AllRequests=
{
0x00=REQUEST_NAME_0
0x01=REQUEST_NAME_1
}
Note: it's not necessary for the numeric bRequest values to start from zero or to
increase sequentially. In addition, the numeric values may be in decimal or hexa-
decimal.
Request(...)
Request(...) defines a request listed in the AllRequests entry. Request
definitions follow the format