baro_board_ms5611_spi.c

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/*
 * Copyright (C) 2011-2013 The Paparazzi Team
 *
 * 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, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */
 
#include "subsystems/sensors/baro.h"
#include "peripherals/ms5611_spi.h"
 
#include "mcu_periph/sys_time.h"
#include "led.h"
#include "std.h"
#include "subsystems/abi.h"
 
#include "mcu_periph/uart.h"
#include "pprzlink/messages.h"
#include "subsystems/datalink/downlink.h"
 
#include "filters/median_filter.h"
 
#if BARO_PERIODIC_FREQUENCY > 100
#error "For MS5611 BARO_PERIODIC_FREQUENCY has to be <= 100"
#endif
 
PRINT_CONFIG_VAR(BB_MS5611_SLAVE_IDX)
PRINT_CONFIG_VAR(BB_MS5611_SPI_DEV)
 
#ifndef BB_MS5611_TYPE_MS5607
#define BB_MS5611_TYPE_MS5607 FALSE
#endif
 
struct Ms5611_Spi bb_ms5611;
struct MedianFilterFloat bb_ms5611_filt;
 
void baro_init(void)
{
  ms5611_spi_init(&bb_ms5611, &BB_MS5611_SPI_DEV, BB_MS5611_SLAVE_IDX, BB_MS5611_TYPE_MS5607);
 
#ifdef BARO_LED
  LED_OFF(BARO_LED);
#endif
 
  init_median_filter_f(&bb_ms5611_filt, 5);
}
 
void baro_periodic(void)
{
  if (sys_time.nb_sec > 1) {
 
    /* call the convenience periodic that initializes the sensor and starts reading*/
    ms5611_spi_periodic(&bb_ms5611);
 
#if DEBUG
    if (bb_ms5611.initialized)
      RunOnceEvery((50 * 30),  DOWNLINK_SEND_MS5611_COEFF(DefaultChannel, DefaultDevice,
                   &bb_ms5611.data.c[0],
                   &bb_ms5611.data.c[1],
                   &bb_ms5611.data.c[2],
                   &bb_ms5611.data.c[3],
                   &bb_ms5611.data.c[4],
                   &bb_ms5611.data.c[5],
                   &bb_ms5611.data.c[6],
                   &bb_ms5611.data.c[7]));
#endif
  }
}
 
void baro_event(void)
{
  if (sys_time.nb_sec > 1) {
    ms5611_spi_event(&bb_ms5611);
 
    if (bb_ms5611.data_available) {
      uint32_t now_ts = get_sys_time_usec();
      float pressure = update_median_filter_f(&bb_ms5611_filt, (float)bb_ms5611.data.pressure);
      AbiSendMsgBARO_ABS(BARO_BOARD_SENDER_ID, now_ts, pressure);
      float temp = bb_ms5611.data.temperature / 100.0f;
      AbiSendMsgTEMPERATURE(BARO_BOARD_SENDER_ID, temp);
      bb_ms5611.data_available = false;
 
#ifdef BARO_LED
      RunOnceEvery(10, LED_TOGGLE(BARO_LED));
#endif
 
#if DEBUG
      float fbaroms = bb_ms5611.data.pressure / 100.;
      DOWNLINK_SEND_BARO_MS5611(DefaultChannel, DefaultDevice,
                                &bb_ms5611.data.d1, &bb_ms5611.data.d2,
                                &fbaroms, &temp);
#endif
    }
  }
}