Teledyne-lecroy USB File Based Decode Manual Manual de usuario descargar pdf (Pagina 21)

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

Reference Manual

FormatValue=Other (%0x02X)

}

This takes the current value of wValue, bitwise ANDs it with the 0xFF00 binary

value, and compares the result with the entries within the brackets in order to find

the branch it needs to follow.

HIBYTE and LOBYTE

HIBYTE and LOBYTE can be used with Depends(...) to mask wIndex and

wValue values. The Mask Value example could, alternatively, be written this way:

wValue=

{

Depends(HIBYTE(wValue))=

{

0x01=

{

WordValue=

{

0x01=One

}

0x02=

{

FormatValue=Two %d

}

FormatValue=Other (%0x02X)

}

Descriptors

Use Descriptors in a Data construct when the data in the data stage of this

request is a USB-defined descriptor or set of descriptors.

Data=

{

Length=?

Descriptors=TRUE

}

When the value of Descriptors is TRUE, the Data field will be labelled “De-

scriptors” and the descriptor information can be viewed by positioning the mouse

cursor over the Data field name. This action causes the Data field's tool tip window

to be displayed. The information can also be viewed in the decoding dialog window.

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Teledyne-lecroy USB File Based Decode Manual Manual de usuario Pagina 21