Red Hat Bugzilla – Bug 845768
jscal cannot calibrate a joystick with an always-on button
Last modified: 2013-02-13 18:35:54 EST
Created attachment 602271 [details]
Patch to allow jscal to calibrate joysticks that leave a button pressed all the time
Description of problem:
If you have a joystick device which always has a button pressed (such as the Saitek flight yoke, which exposes its "Mode" switch as three separate buttons, one of which is always pressed), jscal cannot calibrate it, because it waits for that button to be released.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Get a joystick with an always-pressed button
2.Hook it to a Fedora-running machine
3.Run jscal on it.
Joystick cannot be calibrated.
Joystick should be calibrated.
I have attached a trivial (and ugly) patch to work around this issue. It works by memorizing the button state just before entering the calibration loop, then comparing the current button state against the base button state instead of testing for the truthiness or non-truthiness of the current button state. I have tested that this patch can be used inside of a spec file; one just needs to add "Patch2: joystick-1.2.15-base_buttons.patch" to the sources list and "%patch2 -p1 -b .basebuttons" to the %prep stage of the SPEC file. Of course, this should also be pushed upstream...
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