Teledyne-lecroy UWBTrainer Exerciser Script Language Manual de usuario descargar pdf (Pagina 28)

LeCroy Corporation UWBTrainer Exerciser - Generation Script Language Reference Manual

8.2.8 Defining Subfields

You can define named subfields for top-level template fields. Subfields allow you to set a field

value using DWORD little-endian bit order. Subfield and field names must be unique inside a

template. You can also assign field values using field names directly. Note: You cannot define

subfields for lower-level template fields.

Syntax

Field_Name [ : length ]

{

SubField [ : length ] [ (Byte Order attribute) [ = Field_Value ] [ [ list of possible values ] ]

…

} [ (Byte Order attribute) [ = Field_Value ] [ [ list of possible values ] ]

If the length of a parent field is less than the total length of its subfields, then the total length of

the subfields defines the parent field length.

Note: The subfields always use their parent field as a DWORD little-endian buffer. For example, if

the parent field has a 64-bit length for subfield assignments, the subfields use it as two little-

endian DWORDs.

Example

struct Templ_1

{

F1 : 8

{

SF1 : 8 = 0xCC

SF2 : 16

SF3 : 8

}

struct Templ_2

{

F1 : 8

F2 : 16 # Declare parent field length.

{

SF1 : 8

}

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Teledyne-lecroy UWBTrainer Exerciser Script Language Manual de usuario Pagina 28