Teledyne LeCroy USB File Based Decode Manual - Manual (Page 17)

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C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
Additional Request Keywords
The keywords Define , GroupName , GroupType , Standard , Class ,
Vendor , ClassCode , VendorID , ProductID , AllRequests ,
Request(...) , wValue , wIndex , Data , WordValue , FormatValue ,
and Bitmap have already been covered.
However, there are a number of additional keywords available to further define
requests. This section details the usage of those remaining keywords.
bmRequestType
Use bmRequestType to refer to the actual bmRequestType bitmap value. See
“ Depends(...) ” on page 15 for examples of its use.
Bytes(x, y)
Bytes(x, y) is used to identify a field within the Data stream. This field can be
subsequently decoded using one of the decoding keywords. The x and y values
represent the bytes to decode:
Data=
{
Bytes(0,1)=
{
FormatValue=The first two bytes are 0x%4X
}
}
A question mark ( ? ) may be used to represent the y value. This will cause data
decoding to start at the byte specified by the x value, and continue all the way to the
last byte in the data. This example starts decoding at byte 5 and also decodes all data
that follows byte 5.
Bytes(5,?)
Color(R,G,B)
Use Color(R,G,B) to specify a color for the header portion of a Data field. The
color is represented inside the parentheses by its red, green and blue values. For
example,
Color(255, 0, 0)
will make a red header field.
Databytes(x, y)
Use Databytes(x, y) to identify a field in the Data stream on which a
Depends(...) definition for another Data field should be based.