> I wish to physically rotate the joystick wheel through the code/terminal. > I mean if I run a command, the wheel should rotate to the left/right. > > I looked in > here: http://www.mjmwired.net/kernel/Documentation/input/ff.txt > > Is ioctl() system call as shown in the above link appropriate for the task > or I am barking at the wrong tree? > > Any hints on how to achieve this from userspace? Hi Anisha, You don't mention which distro you are on, but some/most have a test application 'ffcfstress' which cycles the position of a wheel/joystick. There is a 'spring force' which has an adjustable center, but most wheels don't support this. 'ffcfstress' uses a 'constant force' (to the left or right) and monitors the position of the wheel. Thus using a control loop it modulates the amount of force, lowering it as the wheel approaches it's target. If you don't want to use the icotl interface, then you could look at a userspace lib such as SDL1.3 which (mostly) supports ForceFeedback. Cheers, Simon -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
