Bug 845768 - jscal cannot calibrate a joystick with an always-on button
jscal cannot calibrate a joystick with an always-on button
Product: Fedora
Classification: Fedora
Component: joystick (Show other bugs)
Unspecified Linux
unspecified Severity low
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Assigned To: Ngo Than
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-08-04 15:28 EDT by Kevin L. Mitchell
Modified: 2013-02-13 18:35 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-02-13 18:35:48 EST
Type: Bug
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Attachments (Terms of Use)
Patch to allow jscal to calibrate joysticks that leave a button pressed all the time (1.11 KB, patch)
2012-08-04 15:28 EDT, Kevin L. Mitchell
no flags Details | Diff

  None (edit)
Description Kevin L. Mitchell 2012-08-04 15:28:28 EDT
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):

How reproducible:

Very reproducible.

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.
Actual results:

Joystick cannot be calibrated.

Expected results:

Joystick should be calibrated.

Additional info:

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...
Comment 1 Fedora End Of Life 2013-01-16 15:02:43 EST
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Comment 2 Fedora End Of Life 2013-02-13 18:35:54 EST
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