mirror of
https://gitea.tendokyu.moe/Dniel97/segatools.git
synced 2024-11-30 23:57:15 +01:00
124 lines
5.0 KiB
Plaintext
124 lines
5.0 KiB
Plaintext
Reverse-engineered 15093-06 protocol
|
|
(somewhatlurker)
|
|
|
|
|
|
The host and device seem to communicate using data frames similar to (but not
|
|
the same as) jvs and the slider protocol.
|
|
|
|
In general, the host will issue a command to the device and the device will
|
|
respond using the same command number.
|
|
The response will have source and destination addresses swapped of course.
|
|
|
|
The host can request for future packets to not have responses, though this may
|
|
only affect certain commands such as LED data. Just something to be aware of
|
|
when implementing the system.
|
|
|
|
|
|
Basic packet format: `[sync] [dest] [src] [len] [data] [sum]`
|
|
sync: 0xe0
|
|
dest: destination address
|
|
src: source address
|
|
len: length of data
|
|
data: payload
|
|
sum: sum of all prior bytes except sync
|
|
|
|
When the host requests something from/sends something to the board, [data] will
|
|
be `[cmd] ...`.
|
|
cmd: command number
|
|
(followed by arbitrary additional data if applicable)
|
|
|
|
When the board responds, [data] will be `[status] [cmd] [report] ...`.
|
|
status: status code
|
|
(1: Ok, 2: SumError, 3: ParityError, 4: FramingError, 5: OverRunError,
|
|
6: RecvBfOverflow)
|
|
cmd: command number (same as the one from request)
|
|
report: report status code
|
|
(1: Ok, 2: Wait, 3: ReportError, 4: ReportError)
|
|
(followed by arbitrary additional data if applicable)
|
|
|
|
|
|
Escaping:
|
|
Like in JVS, the sync byte and 0xd0 are reserved. To include these in data, send
|
|
0xd0 followed by the reserved byte minus 1. (ie. `d0 cf` or `d0 df`)
|
|
|
|
|
|
Addresses and game-specific details:
|
|
Chunithm uses 2 for the LED boards and 1 for the host. There's two boards
|
|
present, but they are differentiated purely by COM port (one COM10, one COM11).
|
|
Based on wiring diagrams, I think COM10 should be for the left half of the
|
|
marquee display (10 pixels * 5 columns) and the left partition lights (3 pixels).
|
|
COM11 should be for the right half (6 columns) and the right partition lights.
|
|
The marquee appears to snake strips back and forth (input of first column should
|
|
be at the top).
|
|
|
|
Ongeki seems to use 1 for the LED board and 2 for the host. It should be on
|
|
COM3.
|
|
I think the chain is left button (x2), lower left pillar (x7), left ring (x9),
|
|
upper left pillar (x7), top edge (x11), upper right pillar (x7),
|
|
right ring (x9), lower right pillar (x9), right button (x2).
|
|
|
|
|
|
Known Commands:
|
|
0xf0: get board info
|
|
-- chunithm host sends command with no additional data (`e0 02 01 01 f0 f4`)
|
|
-- respond with additional data `[boardno] 0a [chipno] ff [fwver] ...`,
|
|
boardno and chipno are strings (seems same as slider protocol)
|
|
-- ongeki uses 0a and ff as string terminators, not sure if that's the
|
|
intended use though
|
|
-- fwver can be found in an update filename (90 for chunithm, a0 for ongeki)
|
|
-- there's probably some additional bytes like for slider board info, but
|
|
I don't think they're important
|
|
-- pad strings with 0x20 (important!)
|
|
|
|
0xf2: get firm sum
|
|
-- respond with additional data `[sum_upper] [sum_lower]`
|
|
-- sum can be found in an update filename (adf7 for chuni, aa53 for ongeki)
|
|
|
|
0xf3: get protocol version
|
|
-- respond with additional data `[appli_mode] [major] [minor]`, appli_mode
|
|
is bool
|
|
-- version shouldn't matter much, but I think appli_mode should be 1
|
|
-- try `01 01 04`
|
|
|
|
0x11: set timeout
|
|
-- host will send with additional data `[timeout_upper] [timeout_lower]`
|
|
-- respond with additional data `[timeout_upper] [timeout_lower]`
|
|
-- 0 disables timeout
|
|
-- presumably this makes the device reset if no data is sent for a certain
|
|
time period, or maybe the device sends some kind of heartbeat within this
|
|
period
|
|
|
|
0x10: reset
|
|
-- host will send one additional byte (d9) to choose the reset code/type
|
|
-- respond with no additional data
|
|
|
|
0xf1: get board status
|
|
-- shouldn't be necessary to properly implement this, but if you must...
|
|
host sends with additional data `[flagclear]`,
|
|
respond with additional data `[boardflag] [uartflag] [cmdflag] [dipsw]`
|
|
-- flagclear is a bool that presumably resets error flags
|
|
-- flags are bitfields
|
|
-- boardflag: `0 0 0 0 [bor] [reset] [timeout] [wdt]` (MSB first)
|
|
-- uartflag: `0 0 [txoverflow] [rxoverflow] [overrun] [framing] [parity] [sum]`
|
|
-- cmdflag: `0 0 0 0 [exe] [param] [unknown] [busy]`
|
|
|
|
0x14: set disable response
|
|
-- host will send with additional data `[enable]`
|
|
-- respond with additional data `[enable]`
|
|
-- it looks like setting enable to true will _disable_ responses
|
|
-- I think this makes the device not send responses for future commands
|
|
-- it might only affect LED commands
|
|
|
|
0x82: set led direct
|
|
-- host sends 66*3 bytes for rgb as additional data
|
|
-- respond with no additional data
|
|
|
|
0x86: set led count
|
|
-- host sends additional data `[count]`
|
|
-- respond with additional data `[count]`
|
|
-- probably just affects the output from the board to LEDs,
|
|
neither chuni nor ongeki use this
|
|
|
|
0xfd: enter bootloader
|
|
-- no real point implementing this, just interesting
|
|
-- MCU might be an ATMega 32M1 btw, but I'm not sure |