This is a listener and visualizer for reverse-engineering SPI protocol between main CPU and control panel of Pioneer CDJ-1000mk3.
You can see a demonstration here:
This piece of software must be built with Keil MKD5 and run on STM32F7-discovery
0 byte – number of package
CRC - Packet CRC. Calculated as (1byte + 2byte +…+25byte)%256
WFM - Waveform bar bitmask
MB - Memory bar bitmask
TB - Time bar bitmask
CB - Cue bar bitmask
POS - Jog wheel display register
| / | P0 | P1 | P2 | P3 | P4 | P5 | P6 | P7 |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 24 | 48 | 72 | 96 | 120 | 144 | 168 |
| 1 | WFM | WFM | WFM | WFM | WFM | TB | ||
| 2 | WFM | WFM | WFM | WFM | WFM | TB | ||
| 3 | WFM | WFM | WFM | WFM | WFM | TB | ||
| 4 | WFM | WFM | WFM | WFM | WFM | TB | ||
| 5 | WFM | WFM | WFM | WFM | MB | TB | ||
| 6 | WFM | WFM | WFM | WFM | MB | TB | ||
| 7 | WFM | WFM | WFM | WFM | MB | TB | ||
| 8 | WFM | WFM | WFM | WFM | MB | TB | ||
| 9 | WFM | WFM | WFM | WFM | MB | CB | ||
| 10 | WFM | WFM | WFM | WFM | MB | CB | ||
| 11 | WFM | WFM | WFM | WFM | MB | CB | ||
| 12 | WFM | WFM | WFM | WFM | MB | CB | ||
| 13 | WFM | WFM | WFM | WFM | MB | CB | ||
| 14 | WFM | WFM | WFM | WFM | MB | CB | ||
| 15 | WFM | WFM | WFM | WFM | MB | CB | ||
| 16 | WFM | WFM | WFM | WFM | MB | CB | ||
| 17 | WFM | WFM | WFM | WFM | MB | CB | ||
| 18 | WFM | WFM | WFM | WFM | 0x00 | CB | ||
| 19 | WFM | WFM | WFM | WFM | TB | CB | ||
| 20 | WFM | WFM | WFM | WFM | TB | CB | ||
| 21 | WFM | WFM | WFM | WFM | TB | CB | ||
| 22 | WFM | WFM | WFM | WFM | TB | 0x00 | ||
| 23 | WFM | WFM | WFM | WFM | TB | 0x00 | ||
| 24 | WFM | WFM | WFM | WFM | TB | 0x00 | ||
| 25 | POS | POS | POS | POS | POS | POS | POS | POS |
| 26 | CRC | CRC | CRC | CRC | CRC | CRC | CRC | CRC |
Description of P6-P7 TBD. See original doc for more info
ATB - ADC data TOUCH/BRAKE 0…255 8 bits resolution
ARS - ADC data RELEASE/START 0…255 8 bits resolution
APH - ADC Pitch MSB [AAAAAAAA] 0…16383 14 bits resolution
APL - ADC Pitch LSB [AAAAAA00]
APCH - ADC Pitch Center Potentiometer MSB [AAAAAAAA] 0…16383 14 bits resolution
APCL - ADC Pitch Center Potentiometer LSB [AAAAAA00]
JPH - Jog Pulse Counter MSB 0…65535 16 bits resolution (3600 pulses per 1 round)
JPL - Jog Pulse Counter LSB
JSH - Jog Speed MSB 0…65535 16 bits resolution (when jog stopped speed = 65535)
JSL - Jog Speed LSB
JST - Jog status
B0 - B3 - Buttons bitmask
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 16 | ATB | ARS | APH | APL | APCH | APCL | JPH | JPL | JSH | JSL | JST | 0x00 | B1 | 0x00 | B2 | B3 | B4 | CRC? | 241 | 100 | 118 | 0x00 | 0x00 | 0x00 | 0x00 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| Eject Lock switch: 1 = unlock / 0 = lock | Direction switch: 1 = forward / 0 = reverse | 0 | 0 | touch detect | touch detect | 1 = jog forward rotation / 0 = jog reverse rotation | jog rotation detect |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| PLAY | CUE | IN | OUT | Reloop | A | B | C |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| REC | |<< | >>| | << | >> | 0 | 0 | 0 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| < MP3 | MP3 > | JOG MODE | Tempo | Master Tempo | Tempo Reset | 0 | 0 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| < Call | Call > | Memory | Delete | Eject | Time | Text | 0 |
See original doc for more info
Author of research: Anatsko Andrei