/**
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* @file
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* Analogy for Linux, internal calibration declarations
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*
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* @note Copyright (C) 2014 Jorge A Ramirez-Ortiz <jro@xenomai.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#ifndef __ANALOGY_CALIBRATION_H__
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#define __ANALOGY_CALIBRATION_H__
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/*
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* internal definitions between the xenomai utils and the library.
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* no need to expose them to the USER
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*
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*/
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#define ELEMENT_FIELD_FMT "%s_%d:%s"
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#define ELEMENT_FMT "%s:%s"
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#define COEFF_FMT ELEMENT_FIELD_FMT"_%d"
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#define PLATFORM_STR "platform"
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#define CALIBRATION_SUBD_STR "calibration"
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#define MEMORY_SUBD_STR "memory"
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#define AI_SUBD_STR "analog_input"
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#define AO_SUBD_STR "analog_output"
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#define INDEX_STR "index"
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#define ELEMENTS_STR "elements"
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#define CHANNEL_STR "channel"
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#define RANGE_STR "range"
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#define EXPANSION_STR "expansion_origin"
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#define NBCOEFF_STR "nbcoeff"
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#define COEFF_STR "coeff"
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#define BOARD_STR "board_name"
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#define DRIVER_STR "driver_name"
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struct polynomial {
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double expansion_origin;
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double *coefficients;
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int nb_coefficients;
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int order;
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};
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struct subdevice_calibration_node {
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struct holder node;
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struct polynomial *polynomial;
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unsigned channel;
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unsigned range;
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};
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void write_calibration_file(FILE *dst, struct listobj *l,
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struct a4l_calibration_subdev *subd,
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a4l_desc_t *desc);
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#endif
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