Messages in this thread | | | Date | Tue, 10 Feb 2009 23:48:14 +0100 | Subject | Re: [PATCH] lis3lv02d: add axes knowledge of HP Pavilion dv5 models | From | Giuseppe Bilotta <> |
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On Tue, Feb 10, 2009 at 10:39 PM, Giuseppe Bilotta <giuseppe.bilotta@gmail.com> wrote: > On Tue, Feb 10, 2009 at 11:10 AM, Pavel Machek <pavel@suse.cz> wrote: >> >> Yeah, that patch. Not sure what to do next... you could grab lis3 >> manual and see if you can setup chip by hand to get better results... > > As Eric pointed out, it looks definitely like an endianness problem, > although there are a few strange things which are happening at the > same time. Is the lis3 manual available online somewhere, or can I > request it to the mfgr?
'k, found it on the STMicroelectronics website. Reading the doc about LIS3LV02DL I see that WHO_AM_I should return 3Ah, but my sensor returns 3Bh. I'll see if I find the correct datasheet for this one instead, it might have info about the differences.
One thing that I noticed is that (modulo axis inversion) I'm able to use the sensor correctly if I set the thing to only use the high byte, totally discarding the lower byte: return *((s8*)(&hi)); Maybe this sensor needs a different setup to return 12 instead of 8 bits of information.
-- Giuseppe "Oblomov" Bilotta
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