Implements a simple leaky integrator integer value filter, handy for fast, simple, ADC output filtering. Implemented as described here: [[http://ece124web.groups.et.byu.net/references/readings/Simple%20Software%20Lowpass%20Filter.pdf|Simple Software Lowpass Filter.pdf]]
Dependents: AVC_20110423 WallBot_Simple AVC_2012
SimpleFilter.cpp
- Committer:
- shimniok
- Date:
- 2011-04-20
- Revision:
- 0:ac15e38daeb5
- Child:
- 1:70348515ed2f
File content as of revision 0:ac15e38daeb5:
#include "SimpleFilter.h" SimpleFilter::SimpleFilter(short shift): _filter_value(0), _shift(shift) { // nothing to do here, really } short SimpleFilter::filter(short value) { _filter_value += value - (_filter_value >> _shift); _filter_value >>= _shift; return _filter_value; }