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LibrePilot/flight/libraries/auxmagsupport.c

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/**
******************************************************************************
*
* @file auxmagsupport.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
* @brief Functions to handle aux mag data and calibration.
* --
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdint.h>
#include "inc/auxmagsupport.h"
#include "CoordinateConversions.h"
static float mag_bias[3] = { 0, 0, 0 };
static float mag_transform[3][3] = {
{ 1, 0, 0 }, { 0, 1, 0 }, { 0, 0, 1 }
};
AuxMagSettingsTypeOptions option;
void auxmagsupport_reload_settings()
{
AuxMagSettingsTypeGet(&option);
float a[3][3];
float b[3][3];
float rotz;
AuxMagSettingsmag_transformArrayGet((float *)a);
AuxMagSettingsOrientationGet(&rotz);
rotz = DEG2RAD(rotz);
rot_about_axis_z(rotz, b);
matrix_mult_3x3f(a, b, mag_transform);
AuxMagSettingsmag_biasArrayGet(mag_bias);
}
void auxmagsupport_publish_samples(float mags[3], uint8_t status)
{
float mag_out[3];
mags[0] -= mag_bias[0];
mags[1] -= mag_bias[1];
mags[2] -= mag_bias[2];
rot_mult(mag_transform, mags, mag_out);
AuxMagSensorData data;
data.x = mag_out[0];
data.y = mag_out[1];
data.z = mag_out[2];
data.Status = status;
AuxMagSensorSet(&data);
}
AuxMagSettingsTypeOptions auxmagsupport_get_type()
{
return option;
}