Understanding accelerometer data

Nelson Castillo arhuaco at freaks-unidos.net
Sun Nov 1 08:45:26 CET 2009


>> I would recommend the python script for easy testing:
>> http://wiki.openmoko.org/wiki/Accelerometer_data_retrieval
>
> It's certainly possible that I've just written my program wrong.  So
> yes, I'll try that script too.

Here I print a direction vector (ignoring Z).
It goes from 0 to 100 (instead of 0.0 to 1.0) to avoid floating point.
It updates rather fast.

http://svn.arhuaco.org/svn/src/openmoko/accelerometers/dir.c

If I only care about this vector I think I'll use a thread to keep
reading from the accels.

I tried something (very fast, not polished) in Python but i feel the
program lags reading the accels.

http://svn.arhuaco.org/svn/src/openmoko/accelerometers/sand/sand-test.py

I think I'll move to C.

Nelson.-



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