Teledyne LeCroy USB Chief - File Based Decode Manual - Manual (Page 20)

16
C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
if the bmRequestType value is 0x01 , the WordValue definition is used to
decode the request; on the other hand, if the value is 0x02 , then the
FormatValue definition is used.
Default Branches
A default branch can be added to the Depends(...) definition:
wIndex=
{
Depends(bmRequestType)=
{
0x01=
{
FormatValue=Interface # %i status requested
}
FormatValue=Undefined bmRequestType, wIndex is
0x%02X
}
}
If the value of bmRequestType is 0x01 , then the first FormatValue defini-
tion is applied. Otherwise, it defaults to the second FormatValue definition. The
default definition must be last in the list.
Mask Values
Use a bitwise & ( AND ) mask construct within Depends(...) to mask a value:
wValue=
{
Depends(wValue&0xFF00)=
{
0x0100=
{
WordValue=
{
0x01=One
}
}
0x0200=
{
FormatValue=Two %d
}