iPort IW-2, Инструкция по эксплуатации

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Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x03 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x09 Packet Command Low Byte
0x07 0x37 Checksum
3. ReturnNumPlayingSongs
0x3C 0x0A ReturnNumPlayigSongs
Direction: iPort —> Controller
Description: In response to GetNumPlayingSongs the return pack-
et will include the count of the songs queued to play.
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 0x0A Packet Command Low Byte
0x07 0xNN Number of tracks (byte 4)
0x08 0xNN Number of tracks (byte 3)
0x09 0xNN Number of tracks (byte 2)
0x0A 0xNN Number of tracks (byte 1)
0x0B 0xNN Checksum
4. SetCurrentPlayingSong
0x3C 0x0B SetCurrentPlayingSong
Direction: Controller —> iPort
Description: Sets the index of the track that needs to be playing
in the now playing playlist on the iPod. The index
that is specified is obtained by sending the
GetNumPlayingSongs and GetCurrentPlayingSong
Index commands to obtain the number of playing
songs and current playing song index respectively.
NOTE: This command is only usable when the iPod is in
a playing or paused state. The command will fail if the
iPod is stopped.
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 0x0B Packet Command Low Byte
0x07 0xNN New Current Playing Song Index (byte 4)
0x08 0xNN New Current Playing Song Index (byte 3)
0x09 0xNN New Current Playing Song Index (byte 2)
0x0A 0xNN New Current Playing Song Index (byte 1)
0x0B 0xNN Checksum
5. ReturnRepeat
0x3C 0x0C ReturnRepeat
Direction: iPort —> Controller
Description: In response to the GetRepeat command the current
iPod track repeat mode state is returned.
Repeat Mode Code:
Code Category Type
0x00 Repeat Off
0x01 Repeat One Track
0x02 Repeat All
Packet Structure:
Byte Number Value Meaning
0x00 0x2A Start character
0x01 0x49 Device type (iPort)
0x02 0x00 Packet Length High Byte
0x03 0x04 Packet Length Low Byte
0x04 0x38 Packet Command Type
0x05 0x3C Packet Command High Byte
0x06 0x0C Packet Command Low Byte
0x07 0xNN Repeat Mode Code
0x08 0xNN Checksum
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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