iPort IW-2, Instruction Manual

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32. SelectDBRecord
0x3C 0x2B SelectDBRecord
Direction: Controller —> iPort
Description: Selects one or more records in the iPod database
based on a category relative index. Selections are
additive and limited only by the category hierarchy.
Category Type Code:
Code Category Type
0x01 Playlist
0x02 Artist
0x03 Album
0x04 Genre
0x05 Song
0x06 Composer
Packet structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x08 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x2B Packet Command Low Byte
0x07 0xNN Category Type Code
0x08 0xNN Database Record Index (byte 4)
0x09 0xNN Database Record Index (byte 3)
0x0A 0xNN Database Record Index (byte 2)
0x0B 0xNN Database Record Index (byte 1)
0x0C 0xNN Checksum
33. Acknowledge
0x3C 0x3D Acknowledge
Direction:iPort —> Controller
Description: This telegram acknowledges the receipt of a
command received and returns the command status.
Command Result Status Code:
Code Category Type
0x00 Success (OK)
0x01 Error: Unknown Database Category
0x02 Error: Command Failed
0x03 Error: Out of Resources
0x04 Error: Bad Parameter
0x05 Error: Unknown ID
Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x06 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x3D Packet Command Low Byte
0x07 0xNN Command Result Status Code
0x08 0xNN Command High Byte being ACK’d
0x09 0xNN Command Low Byte being ACK’d
0x1A 0xNN Checksum
13
Instruction Manual
iPort RS-232 Programming
iPort
Command
High Byte
iPort
Command
Low Byte
Command
iPort
Command
High Byte
iPort
Command
Low Byte
Command