meteo_stick_calib.h

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/*
 * Copyright (C) 2015 Gautier Hattenberger, Alexandre Bustico
 *
 * This file is part of paparazzi

 * paparazzi 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 2, or (at your option)
 * any later version.
 *
 * paparazzi 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 paparazzi; see the file COPYING.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 */

#ifndef METEO_STICK_CALIB_H
#define METEO_STICK_CALIB_H

#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <time.h>

#define  MTOSTK_MAX_SEEK_ARRAY_SIZE 20 // max polynom order is 4
#define  MTOSTK_MAX_POLY_ARRAY_SIZE 6 // max polynom order is 4
#define  MTOSTK_MAX_TEMP_ARRAY_SIZE 6 //
#define  UUID_LEN 13 // including trailing 0

typedef enum {
  MTOSTK_TEMP = 0,
  MTOSTK_ABS_PRESS,
  MTOSTK_DIF_PRESS,
  MTOSTK_HUMIDITY,
  MTOSTK_NUM_SENSORS
} Mtostk_sensors ;

typedef struct {
  float  coeffs[MTOSTK_MAX_TEMP_ARRAY_SIZE][MTOSTK_MAX_POLY_ARRAY_SIZE];
  float  temps[MTOSTK_MAX_TEMP_ARRAY_SIZE];
  time_t timestamp;
  uint16_t num_temp;
  uint16_t num_coeff;
} Sensors_params;

typedef struct {
  Sensors_params params[MTOSTK_NUM_SENSORS];
  char uuid[13];
} Calibration_params;


extern bool mtostk_populate_cal_from_buffer(Calibration_params *cp, uint8_t *eeprom_buffer);

extern float mtostk_get_calibrated_value(Calibration_params *cp, Mtostk_sensors type, float uncal, float temp);

#endif