Teledyne-lecroy UWBTrainer Exerciser Script Language Manual do Utilizador descarregar pdf (Página 40)

LeCroy Corporation UWBTrainer Exerciser - Generation Script Language Reference Manual

8.5 Frame Template Multi-byte Field Byte Order

Attribute

By default, for fields up to 32 bits, the parser uses the Little Endian (LSB -> MSB) byte order.

For example, if a 32-bit field has the value 0xAABBCCDD, it is written into the byte stream as:

DD CC BB AA

Example

Frame MY_TEMPLATE

{

Field_16 : 16 = 0xEEFF

Field_32 : 32 = 0xAABBCCDD

}

The byte stream based on this template is:

FF EE DD CC BB AA

8.5.1 Big Endian Byte Order

You can require that all template fields have the Big Endian (MSB -> LSB) byte order. Adding

(MSB) after the ancestor list in the template declaration instructs the script parser to choose the

MSB -> LSB byte order.

Example

Frame MY_TEMPLATE (MSB)

{

Field_16 : 16 = 0xEEFF

Field_32 : 32 = 0xAABBCCDD

}

The byte stream based on this template is:

EE FF AA BB CC DD

Note: This attribute is needed only for assignments in which numeric literals (such as

0xAABBCCDD or 12323344 ) are used.

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