iPort IW-2, Инструкция по эксплуатации

Страница: 9 / 18

Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x07 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x1C Packet Command Low Byte
0x08 0xNN Database Song Record Index (byte 4)
0x09 0xNN Database Song Record Index (byte 3)
0x0A 0xNN Database Song Record Index (byte 2)
0x0B 0xNN Database Song Record Index (byte 1)
0x0C 0xNN Checksum
18. ReturnIndexedPlayingSongTitle
0x3C 0x1D ReturnIndexedPlayingSongTitle
Direction: iPort —> Controller
Description: In response to the GetIndexedPlayingSongTitle
command, returns the song title of the indexed
playing song.
Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0xNN Packet Length High Byte
0x03 0xNN Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x1D Packet Command Low Byte
0x07 – 0xNN 0xNN Song Title in ASCII
0xNN 0xNN Checksum
19. GetIndexedPlayingSongArtistName
0x3C 0x1E GetIndexedPlayingSongArtistName
Direction: Controller —> iPort
Description: Requests the artist name of the indexed playing
song from the iPod.
NOTE: iPod will respond with an ACK including the
specific error status if the received command length or
playing song index is invalid.
Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x07 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x1E Packet Command Low Byte
0x08 0xNN Database Song Record Index (byte 4)
0x09 0xNN Database Song Record Index (byte 3)
0x0A 0xNN Database Song Record Index (byte 2)
0x0B 0xNN Database Song Record Index (byte 1)
0x0C 0xNN Checksum
20. ReturnIndexedPlayingSongArtistName
0x3C 0x1F ReturnIndexedPlayingSongArtistName
Direction: iPort —> Controller
Description: In response to the GetIndexedPlayingSongArtist
Name command, returns the artist name of the
indexed playing song.
Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0xNN Packet Length High Byte
0x03 0xNN Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x1F Packet Command Low Byte
0x07 – 0xNN 0xNN Song Title in ASCII
0xNN 0xNN Checksum
21. GetPlayStatus
0x3C 0x20 GetPlayStatus
Direction: Controller —> iPort
Description: Requests the current iPod playback status allowing
the controller to display information to the user.
9
Instruction Manual
iPort RS-232 Programming
iPort
Command
High Byte
iPort
Command
Low Byte
Command
iPort
Command
High Byte
iPort
Command
Low Byte
Command
iPort
Command
High Byte
iPort
Command
Low Byte
Command
iPort
Command
High Byte
iPort
Command
Low Byte
Command