g-sensor calibration problem
John Lee
john_lee at openmoko.com
Fri Jun 20 11:02:41 CEST 2008
Hi,
If I use the enclosed python code to test g-sensor on gta02 (read
/dev/input/event3) while holding the neo vertically, normally the
result looks like this:
x = -72, y = -990, t = 1.976891 pi
x = -72, y = -990, t = 1.976891 pi
x = -54, y = -990, t = 1.982655 pi
x = -72, y = -990, t = 1.976891 pi
x = -72, y = -990, t = 1.976891 pi
It's quite reasonable. However,
* sometimes after booting
* always after resume (apm -s)
the result will look like this:
x = 1620, y = -36, t = 0.492928 pi
x = 1620, y = -18, t = 0.496463 pi
x = 1620, y = -36, t = 0.492928 pi
x = 1620, y = -36, t = 0.492928 pi
x = 1620, y = -36, t = 0.492928 pi
I wonder what's the cause? Any more information I could provide?
Regards,
John
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