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nissan-cdc-protocol.txt
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nissan-cdc-protocol.txt
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Serial communication: 9600 baud, 8 bit, even parity, 1 stop bit (1start, 8data, 1parity, 1stop = 11bit)
CRC XOR all bytes (skip zeroes)
CD => /REQ (set active) request attention
HU => 06 ACK you can speak now
CD => status my status
HU => 06 ACK ok, got it
...
CD => REQ (set idle) I am done
CD => 04 EOT going offline
=============================================================
Head unit to cd changer
02 XX XX 03 YY - Function request
02 03 - Cancel command
where:
02 - STX start text
XX XX - function in ascii, i.e. 36 32 is #62
0 initialize
1 get parameters
60 play [36 30]
61
62 stop play [36 32]
63 next track [36 33]
64 prev track [36 34]
65 fast forward pressed [36 35]
66 fast forward released [36 36]
67 fast reverse pressed [36 37]
68 fast reverse released [36 38]
6: next cd [36 3a]
6; next cd [36 3b]
6c program off [36 ?]
6d program one track
6e program all random
'r' scan disks [0x72]
03 - ETX end text
YY - CRC
04 - EOT end of translation
06 - ACK acknowledgement
10 - DLE start/end of raw data
============================================================
Changer to head unit
Commands:
04 - EOT end of transmission
06 - ACK
10 - DLE data link escape
Message:
10 02 XX [xx xx] 10 03 CRC
where XX
0 initializing [30]
1 parameters [31 3f 80 20 01 00]
2
3 processing cmd [33 xx xx]
Initialize
==========================
/REQ <= each 12ms, timeout at 10ms. Repeat till HU answers
REQ
/REQ <= timeout at 10ms.
HU: 02 30 03 33
CD: 06
HU: 04
REQ
/REQ
HU: 06
CD: 02 30 03 33
HU: 06
REQ
CD: 04
HU: 02 31 03 32
CD: 10 02 31 3f 80 20 01 00 10 03 bc
HU: 06
CD: 04
HU: 02 36 32 03 07
CD: 10 02 33 20 01 10 03 01
HU: 06
CD: 04
<=> repeats each 5 seconds
HU: 02 30 03 33
CD: 06
HU: 04
/REQ
HU: 06
CD: 02 30 03 33
HU: 06
REQ
CD: 04
HU: 02 31 03 32
CD: 10 02 31 3f 80 20 01 00 10 03 bc
HU: 06
CD: 04
HU: 02 36 32 03 07
CD: 10 02 33 20 01 10 03 01
HU: 06
CD: 04
CD On
==========================
HU: 02 30 03 33 <= Activate Changer
CD: 06
HU: 04
/REQ
HU: 06
CD: 02 30 03 33 <= Activated
HU: 06
REQ
CD: 04
HU: 02 31 03 32 <= Get parameters
CD: 10 02 31 3f 80 20 01 00 10 03 bc
HU: 06
CD: 04
HU: 02 36 32 03 07 <= Stop
CD: 10 02 33 20 01 10 03 01
HU: 06
CD: 04
Play
==========================
HU: 02 36 30 03 05
CD: 10 02 33 22 01 10 03 03
HU: 06
CD: 04
Stop
==========================
HU: 02 36 32 03 07
CD: 10 02 33 20 01 10 03 01
HU: 06
CD: 04
Next CD
==========================
HU: 02 36 3a 03 0f <= repeats after 12ms
CD: 10 02 33 2a 00 10 03 0a
HU: 06
CD: 04
/REQ
HU: 06
CD: 10 02 33 2a 00 10 03 0a
HU: 06
REQ
CD: 04
Prev CD
==========================
HU: 02 36 3b 03 0e <= repeats after 12ms
CD: 10 02 33 2a 00 10 03 0a
HU: 06
CD: 04
/REQ
HU: 06
CD: 10 02 33 2a 00 10 03 0a
HU: 06
REQ
CD: 04
Next track
==========================
HU: 02 36 33 03 06
CD: 10 02 33 24 01 10 03 05
HU: 06
CD: 04
CD: Status message
Prev track
==========================
HU: 02 36 34 03 01
CD: 10 02 33 25 01 10 03 04
HU: 06
CD: 04
Fast Forward
==========================
HU: 02 36 35 03 00 <= FF pressed
CD: 10 02 33 26 01 10 03 07
HU: 06
CD: 04
HU: 02 36 36 03 03 <= FF released
CD: 10 02 33 22 01 10 03 03
HU: 06
CD: 04
PROG after initial power on + disk scan
==========================
HU: 02 30 03 33 //cmd activate
CD: 06
HU: 04
/REQ
HU: 06
CD: 02 30 03 33 //report activated
HU: 06
REQ
CD: 04
HU: 02 31 03 32
CD: 10 02 31 00 00 20 00 00 10 03 02 //going to enumerate cds
//##CD: 10 02 31 3f 80 20 01 00 10 03 bc //readily available params (powerOn)
//##CD: 10 02 31 3f 80 25 01 00 10 03 b9
HU: 06
CD: 04
//after 18.67s
/REQ
HU: 06
CD: 10 02 32 3f 80 10 03 9e //CDs scan done?
HU: 06
REQ
CD: 04
//after 4.254s
/REQ
HU: 06
CD: 10 02 33 20 01 10 03 01 //stopped or operation finished
HU: 06
REQ
CD: 04
//after 7.9s repeat of PROG
HU: 02 30 03 33
CD: 06
HU: 04
/REQ
HU: 06
CD: 02 30 03 33
HU: 06
REQ
CD: 04
HU: 02 31 03 32
CD: 10 02 31 3f 80 20 01 00 10 03 bc
HU: 06
CD: 04
HU: 02 36 32 03 07
CD: 10 02 33 20 01 10 03 01
HU: 06
CD: 04
//after 4.76s repeat of PROG
HU: 02 30 03 33
CD: 06
HU: 04
/REQ
HU: 06
CD: 02 30 03 33
HU: 06
REQ
CD: 04
HU: 02 31 03 32
CD: 10 02 31 3f 80 20 01 00 10 03 bc
HU: 06
CD: 04
// after 4.7s repeat PROG
//...
HU: 02 36 32 03 07 //Stop cmd
CD: 10 02 33 20 01 10 03 01 //stopped
HU: 06
CD: 04
HU: 02 36 30 03 05
CD: 10 02 33 22 01 10 03 04
//##CD: 10 02 33 25 01 10 03 04
HU: 06
CD: 04
/REQ
HU: 06
CD: 02 35 30 31 30 31 30 30 30 30 03 36 // 0 sec play
HU: 06
REQ
CD: 04
//after 3.6s
/REQ
HU: 06
CD: 02 35 30 31 30 31 30 30 30 31 03 37 // +1 sec of play
HU: 06
REQ
CD: 04
//after 1s
/REQ
HU: 06
CD: 02 35 30 31 30 31 30 30 30 32 03 34 // +2 sec of play
HU: 06
REQ
CD: 04
//continue on each 1 sec of play time
//,,,,
//pressed Next Track
HU: 02 36 33 03 06
CD: 10 02 33 24 01 10 03 05
HU: 06
CD: 04
/REQ
HU: 06
CD: 02 35 30 31 30 32 30 30 30 30 03 35 // 2nd track playing
HU: 06
REQ
CD: 04
//after 0.33 sec
/REQ
HU: 06
CD: 10 02 33 22 01 10 03 03 // Next track cmd executed
HU: 06
REQ
CD: 04
//each second play info
/REQ
HU: 06
CD: 02 35 30 31 30 32 30 30 30 31 03 34 // +1 sec of play
HU: 06
REQ
CD: 04
//,,,,,
//Next CD Pressed
HU: 02 36 3a 03 0f
CD: 10 02 33 2a 00 10 03 0a
HU: 06
CD: 04
/REQ
HU: 06
CD: 10 02 33 2a 00 10 03 0a // Next CD cmd executed
HU: 06
REQ
CD: 04
/REQ
HU: 06
CD: 02 35 30 32 30 31 30 30 30 30 03 35 // 2nd CD playing
HU: 06
REQ
CD: 04
//play info each second
-----------------------------------
/REQ
HU: 06
CD: 10 02 33 24 01 10 03 05
HU: 06
REQ
CD: 04
/REQ
HU: 06
CD: 10 02 33 22 01 10 03 03
HU: 06
REQ
CD: 04
HU: 02 36 3c 03 09
CD: 10 02 33 22 05 10 03 07
HU: 06
CD: 04
/REQ
HU: 06
CD: 10 02 33 22 05 10 03 07
HU: 06
REQ
CD: 04
HU: 02 36 3d 03 08
CD: 10 02 33 22 09 10 03 0b <=
HU: 02 3d 08 <= scratch?
CD: 10 02 33 22 09 10 03 0b. <= repeat
HU: 06
CD: 04
HU: 02 36 3e 03 0b
CD: 10 02 33 22 0d 10 03 0f
HU: 06
CD: 04
Changer Play status (once per second)
======================
02 35 DD DD TT TT MM MM SS SS 03 AA - CD information packet
where:
02 - STX start of text
35 - Device Status? - display
DD DD - disk # 00...15 in ascii
TT TT - track # 00...99 in ascii
MM MM - minutes 00...99 in ascii
SS SS - seconds 00...59 in ascii
03 - ETX end of text
AA - CRC
Example:
REQ: /REQ
HU: 06
CD: 02 35 30 36 30 31 30 30 31 30 03 30
HU: 06
REQ: REQ
CD: 04
Disk 06
Track 01
Minutes 00
Seconds 10
Disks scan
=====================
10 02 33 20 00 10 03 00
04
10 02 33 20 01 10 03 01
04
10 02 33 20 03 10 03 03
04
10 02 32 38 80 10 03 99
04