Teledyne-lecroy USB File Based Decode Manual Manual do Utilizador descarregar pdf (Página 33)

COMPUTER ACCESS TECHNOLOGY CORPORATION USB DESCRIPTOR DEFINITION (.DSC) FILES

Reference Manual

AllOffsets=

{

2=Example1

4=Example2

}

Note: it's not necessary for the numeric Offset values to start from zero or to

increase sequentially. In addition, the numeric values may be in decimal or hexa-

decimal.

Offset(...)

Offset(...) defines an offset listed in the AllOffsets entry. Offset defini-

tions follow the format

Offset(<Offset_value>)=

{

...

}

The value of <Offset_value> should match the numeric value assigned to the

offset in the AllOffsets entry. For example:

Offset(2)=

{

...

}

Offset(4)=

{

...

}

Descriptor definitions

Just as the bulk of a request definition file is made up of Request(...) entries,

the main portion of a descriptor definition file is composed of Offset(...)

entries, which contain the actual descriptor definitions. They are structured very

similarly to Request(...) entries; therefore, only their differences will be

detailed here.

Decoding Definition Strings

Unlike request definitions, descriptor definitions do not use the keywords wValue,

wIndex and Data, since all of the descriptor information is data. Instead, the def-

initions are in the form of the contents of a Data entry.

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Teledyne-lecroy USB File Based Decode Manual Manual do Utilizador Página 33