Teledyne-lecroy USB File Based Decode Manual Manual do Utilizador descarregar pdf (Página 9)

COMPUTER ACCESS TECHNOLOGY CORPORATION USB REQUEST DEFINITION (.REQ) FILES

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=

{

...

}

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 35 36

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