Teledyne LeCroy USB Chief - File Based Decode Manual - Manual (Page 19)

15
C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
Depends(...)
Use Depends(...) to create a definition that displays a a field or a set of fields
in different ways, depending on certain conditions. It works similarly to a C
language
switch statement. The basic structure of a Depends(...) definition
is this:
Depends(<keyword>[&<mask value>]
opt
)=
{
<value>=
{
...
}
...
[<keyword>= ...]
opt
}
Keywords
Keywords that can be used inside the parentheses of a Depends(...) definition
are: bmRequestType , Databytes(m,n) , wIndex , and wValue . The value
to which the keyword refers is the condition that the decoding depends upon.
Possible values, along with their corresponding decoding definitions, are listed
within the curly braces on the right-hand side of the
Depends(...) entry. In this
example,
wValue=
{
Depends(bmRequestType)=
{
0x01=
{
WordValue=
{
0x0000=One
}
}
0x02=
{
FormatValue=Two %d
}
}
}