[Gta04-owner] Making sense of the sensors.

[Benjamin Deering]

On 08/10/2012 06:01 PM, Denis 'GNUtoo' Carikli wrote:
> On Wed, 2012-08-08 at 20:12 -0400, Benjamin Deering wrote:
>> I played a bit with valacompass on GTA04.  Libsensmon would need a
>> BMA150 module for tilt compensation to work, but I commented out the
>> accelerometer code in my build.
>>
>> The hmc5843 driver for the latest SHR kernel has the sysfs files in a
>> different place.
>>
>> I changed .Sensmon/config to include:
>> [Hmc5843Source]
>> device=/sys/bus/i2c/devices/2-001e/iio:device0
>>
>> The sysfs file 'rate' seems to have changed to sampling_frequency.
>>
>> X,Y,and Z values come from separate files.  I'm not a vala programmer,
>> but I can send what I did to get them.
>>
>> I had to adjust in_magn_range to get the Y axis to show anything but -4096.0
> Hi, can you share the patches so I could try because I read your mail,
> then I was told how to activate the sensors and I started to do the same
> thing and forgot that you had the GUI working.
> (I didn't sleep well last night and it's late right now...)
>
> Altough I've documented the 3.4 kernel interface here:
> http://www.shr-project.org/trac/wiki/Devices/GTA04/Gta04Usage
>
> Denis.
>
>
>
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I've attached my changes to libsensmon.  The only change I made to 
sensmon was the default device path which is unused if .Sensmon/config 
is populated.  My valacompass changes are a mess and really it should be 
revisited after a GTA04 accelerometer is supported by libsensmon.

Ben
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