Philips BDS4621 user manual Packet Type Number Description, Packet Payload Definition

						User Manual BDS4621
				Packet Type
				The Packet Type (ePacketType) is a BYTE in length
				number that defines the type of data in the packet.
				The following entries are valid packet typess:
Packet Type Name		Packet Type Number				Description
pt_INVALID			0		Invalid Packet Type
RESERVED			1			RESERVED
pt_EVENT			2	Host can send any event defined in
				Philips PDP software.
pt_OPERATION			3	Host can send any operation defined in
				Philips PDP software.
				Table 6: Packet Types
				Packet Payload Size
				The Packet Payload Size (nPacketSize) is a BYTE
				that defines the size of the Payload portion of
				the packet. If the packet contains only header
				information, this is zero. Therefore, the total byte
				count of any packet = nPacketSize plus 7 (since
				the Packet Header is seven bytes long).
				Packet Checksum (CRC)
				Each packet is CRC’ed using the tables later in
				this document. This number is the CRC value for
				the complete packet including the Packet Header
				and Packet Payload. The CRC is calculated with
				the nCRCPacket value initialized to zero.
				1.1.3. Packet Payload Definition
				Event Packet Type
				The Event packet is used by the host system to
				send virtual events (such as Zoom, Source, Auto
				Adjust, etc.) to the target system. Packet payload
				size is 6 bytes.
Byte	Field Name		Field Value			Description
0-1	Virtual Event			Virtual Event ID as defined through Configurator
2-5	Parameter			Parameter that can be associated with the event.
				Table 7: Event Packet Type Format
				The source code definition of the Message
				packet data structure is:
				typedef	struct
				{
				WORD		eEvent;
				DWORD		dwParam;
				} EVENT_MESSAGE;

This lets you send any event defined in

Configurator to the system including all remote,

IR, or special events.

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