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# Force Feedback Effects - Thrustmaster T300RS and compatible
Here I will gather all info I can find out about the different force feedback
effects and their USB commands. All values seem to be little-endian.
Also, general note, it seems like some effects are affected by the direction of
the force, denoted by `***`. As far as I can tell, `fade_level` and
`attack_level` values are calculated by mapping the `u16` into `s16` and taking
the absolute value, and after that multiplying by the direction.
A full list of wheels that use USB packets in the format documented here is yet
to be determined, but at least T300, T248 and TX seem to use it. Each wheel may
have model specific peculiarities, though.
> **NOTE:** All values are examples of actual commands that I captured on the
> USB interface, not the only available ones.
## GENERAL
### Playing a single effect once
```
60 00 - standard header
01 - ID
89 - playing options
01 - play
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Playing a single effect multiple or infinite times
```
60 00 - standard header
01 - ID
89 - playing options
41 - play with count
00 00 00 00 - play count, 0 for infinite, seems to be u16
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Stopping/removing (why are they rolled into one?)
```
60 00 - standard header
01 - ID
89 - playing options
00 - stop
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## Open:
```
60 01 - standard header?
04 - ?
00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
(this command doesn't appear every time, odd)
60 12 - ?
bf 04 00 00 03 b7 1e - ? /* wow, this is different on different wheels? */
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60 01 - ?
05 - ?
00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## Close:
```
60 01 - standard header?
00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## Rotation angle:
```
60 08 - header plus settings?
11 - set rotation angle
55 d5 - angle (between ff ff and 7b 09, one degree is roughly 3c)
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## FF_AUTOCENTER:
```
60 08 - header plus settings?
03 - set autocenter force
8f 02 - force (between ff ff and 00 00)
00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## FF_GAIN:
```
60 02 - header plus gain?
bf - gain (between ff and 00)
00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
## FF_CONSTANT
### Initialization
```
60 00 - standard header
01 - ID
6a - new constant effect(?)
fe ff - strength between ff bf (-16385) and fd 3f (16381) ***
00 00 - attack_length
00 00 - attack_level ***
00 00 - fade_length
00 00 - fade_level ***
00 4f - ?
f7 17 - time in milliseconds, unsigned
00 00
07 00 - offset from start(?)
00 ff ff - end of new effect(?)
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Modifying (For dynamic updating of effects)
#### Direction: ``N/A``
#### Constant force:
```
60 00 - standard header
01 - ID
0a - modify constant force
05 16 - constant force between ff bf (-16385) and fd 3f (16381) ***
00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Envelope:
```
60 00 - standard header
01 - ID
31 - modify envelope
84 - ID of envelope attribute ( attack_level 82,
attack_length 81,
fade_level 88,
fade_length 84 )
63 04 - value attribute should be set to ?***?
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Duration:
```
60 00 - standard header
01 - ID
49 00 41 - modify timing?
6c 20 - length in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Offset: `N/A`
## FF_RAMP
Ramps seem to follow triangle wave parameters.
### Init:
```
60 00 - standard header
01 - ID
6b - new ramp effect
f6 7f - difference ***
fe ff - level? *** (level = (if end_level > start_level, end_level, else
start_level) - difference?) (signed)
00 00
f7 17 - time
00 80 - some kind of marker
00 00 - attack_length
f6 7f - attack_level ***
00 00 - fade_length
f6 7f - fade_level***
04 - invert (going "down", 05, going "up", 04)
4f
f7 17 - time again?
00 00
00 00 - offset
00 ff ff - end of init
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Modifying:
```
60 00 - standard header
01 - ID
0e - ???
03 - ramp?
e3 04 - difference?
7d 75 - "level"?
05 - ????
00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Envelope:
```
60 00 - standard header
01 - ID
31 - modify envelope
84 - ID of envelope attribute ( attack_level 82,
attack_length 81,
fade_level 88,
fade_length 84 )
63 04 - value attribute should be set to
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Duration:
```
60 00
01 - ID
4e - ?
08 - ?
01 00 - time in milliseconds
05 - ?
41 - ?
01 00 - time in milliseconds
00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
#### Offset: `N/A`
## FF_DAMPER + FF_FRICTION + FF_INERTIA + FF_SPRING:
### Init:
```
60 00 - standard header
02 -ID
64 - new conditional effect (sometimes e4)
fc 7f - positive coefficient (right)
between 01 80 (-32767) and fc 7f (32764)
fc 7f - negative coefficient (left)
between 01 80 (-32767) and fc 7f (32764)
fe ff - deadband right (offset + deadband)
between 01 80 (-32767) and ff 7f (32767)
fe ff - deadband left (offset - deadband)
between 01 80 (-32767) and ff 7f (32767)
fc 7f - positive saturation (right)
between 00 00 and fc 7f (32764) or a6 6a (27302)
fc 7f - negative saturation (left)
between 00 00 and fc 7f (32764) or a6 6a (27302)
fe ff fe ff fe ff fe ff - some weird hard-coded
values to do with friction?
fc 7f - max positive saturation (type 07 - fc 7f
type 06 - a6 6a)
fc 7f - max negative saturation (type 07 - fc 7f
type 06 - a6 6a)
07 - type (damper, friction, inertia - 07
spring - 06)
4f
f7 17 - duration
00 00
00 00 - offset
00 ff ff - end of init
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Modifying:
```
positive coefficient:
60 00
02 - ID
0e 41
64 35 - value, signed, between 01 80 (-32767) and fc 7f (32764)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
negative coefficient:
60 00
02 - ID
0e 42
64 35 - value, signed, between 01 80 (-32767) and fc 7f (32764)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
positive and negative coefficient:
60 00
01 - ID
0e 43
ab 67 - right coefficient, signed, between 01 80 (-32767) and fc 7f (32764)
50 18 - left coefficient, signed, between 01 80 (-32767) and fc 7f (32764)
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
deadband/offset:
60 00
02 - ID
0e 4c
64 35 - deadband right (offset + deadband)
between 01 80 (-32767) and ff 7f (32767)
00 00 - deadband left (offset - deadband)
between 01 80 (-32767) and ff 7f (32767)
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
positive saturation
60 00
01 - ID
0e 50
fc 7f - value between 00 00 and fc 7f or a6 6a (defined in init)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
negative saturation
60 00
01 - ID
0e 60
fc 7f - value between 00 00 and fc 7f or a6 6a (defined in init)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60 00
01 - ID
0e 70
da 5d - right saturation between 00 00 and fc 7f or a6 6a (defined in init)
b9 0b - left saturation between 00 00 and fc 7f or a6 6a (defined in init)
00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Duration:
```
60 00 - standard header
01 - ID
49 06 41 - modify timing?
6c 20 - length in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Offset: `N/A`
## FF_PERIODIC:
### Init
```
60 00 - standard header
01 - ID
6b - new periodic effect
00 00 - magnitude between 00 00 and fc 7f (32764) ***
fe ff - offset (up/down) between ff bf (-16385) and fd 3f (16381)
00 00 - phase (left/right) between 00 00 and 4a f7 (32586)
meaning is 0 to ~359 deg phase shift in 5b steps
e8 03 - period between 00 00 and ff ff (in milliseconds)
00 80
00 00 - attack_length
00 00 - attack_level ***
00 00 - fade_length
00 00 - fade_level ***
01 - type of periodic ( square 01,
sine 03,
triangle 02,
sawtooth down 05,
sawtooth up 04 )
4f
f7 17 - duration
00 00
00 00 - offset
00 ff ff - end of init
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Modifying:
```
magnitude:
60 00
02 - ID
0e 01
64 35 - value, between 00 00 and fc 7f (32764)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
offset of effect:
60 00
02 - ID
0e 02
64 35 - value, between ff bf (-16385) and fd 3f (16381)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
phase:
60 00
02 - ID
0e 04
64 35 - value, between 00 00 and 4a f7 (32586) in 5b steps
meaning is 0 to 359 deg phase shift
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
period:
60 00
02 - ID
0e 08
64 35 - value, between 00 00 and ff ff (in milliseconds)
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Envelope:
```
60 00 - standard header
01 - ID
31 - modify envelope
84 - ID of envelope attribute ( attack_level 82,
attack_length 81,
fade_level 88,
fade_length 84 )
63 04 - value attribute should be set to
00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Duration:
```
Square:
60 00
01 - ID
49 - ?
01 - Effect type
41 - ?
4e 0c - Time in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Sine:
60 00
01 - ID
49 - ?
03 - Effect type
41 - ?
ec 13 - Time in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Triangle:
60 00
01 - ID
49 - ?
02 - Effect type
41 - ?
4e 0c - Time in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Sawtooth up:
60 00
01 - ID
49 - ?
04 - Effect type
41 - ?
4e 0c - Time in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Sawtooth down:
60 00
01 - ID
49 - ?
05 - Effect type
41 - ?
ec 13 - Time in milliseconds
00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
```
### Offset: `N/A ?`
## PS4 Input `rdesc`
```
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 226 /* wheel */
ff00.0021 = 125 /* wheel */
ff00.0021 = 255 /* gas */
ff00.0021 = 255 /* gas */
ff00.0021 = 255 /* brake */
ff00.0021 = 255 /* brake */
ff00.0021 = 255 /* clutch */
ff00.0021 = 255 /* clutch */
ff00.0021 = 0
ff00.0021 = 255
ff00.0021 = 255
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
ff00.0021 = 0
```
|
