Message Header Format

Each message sent across the Host Interface includes a header that describes the message that follows. The structure of this header is:

typedef struct _PTHI_MESSAGE_HEADER

{

    PTHI_VERSION      Version;

    UINT16            Reserved;

    COMMAND_FMT       Command;

    UINT32            Length;

} PTHI_MESSAGE_HEADER;

 

Field

Value or Description

Version

Version of the PTHI.

Reserved

Must be set to 0.

Command

The command code. The substructure of a command code is described below.

Length

The number of bytes in the message, excluding the message header.

 

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