Programming resources related to steering wheels

Steering wheels are seen by the system as joysticks with several axes, buttons and FFB. The axes and buttons are no problem, but FFB uses proprietary protocols.

Currently, the Linux kernel provides an API to access FFB in Logitech wheels through evdev. SDL2 has also APIs for handling FFB.

Kernel related links:

• https://www.kernel.org/doc/html/latest/input/ff.html
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/input/ff-memless.c
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/hid/hid-lg4ff.c
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/hid/hid-logitech-hidpp.c
• https://www.kernel.org/doc/Documentation/hid/hidraw.txt
• https://github.com/edwin-v/linux-hid-lg4ff-next

KLGD (Kernel Library for Gaming Devices):

• https://gitlab.com/madcatx/LinuxFF-KLGD
• https://github.com/Eliasvan/Linux-Force-Feedback/wiki/Logitech-gaming-devices-using-KLGD
• https://github.com/chrisaq/linux-klgd
• https://github.com/edwin-v/hid-lg4ff-klgd

SDL2 related links:

• https://wiki.libsdl.org/CategoryForceFeedback
• https://hg.libsdl.org/SDL/file/d953f28d33e3/src/haptic/linux/SDL_syshaptic.c

Examples of use:

• https://sourceforge.net/p/linuxconsole/code/ci/master/tree/utils/fftest.c
• https://sourceforge.net/p/linuxconsole/code/ci/master/tree/utils/ffset.c

Others:

• https://github.com/Eliasvan/Linux-Force-Feedback/wiki
• https://lkml.org/lkml/2014/4/26/115
• https://github.com/ValveSoftware/Proton/issues/2366#issuecomment-529254481
• https://github.com/ValveSoftware/Proton/issues/2366#issuecomment-529150586
• https://steamcommunity.com/groups/linuxff/discussions/0/405692224235574471/
• https://forum.scssoft.com/viewtopic.php?f=109&t=249622
• https://www.desktopsimulators.com/forum/showthread.php?tid=378
• https://lkml.org/lkml/2014/5/21/325