mirror of https://github.com/gnss-sdr/gnss-sdr
102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
/*!
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* \file gps_l1_ca_subframe_fsm.h
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* \brief Interface of a GPS NAV message word-to-subframe decoder state machine
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* \author Javier Arribas, 2011. jarribas(at)cttc.es
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2015 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_GPS_L1_CA_SUBFRAME_FSM_H_
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#define GNSS_SDR_GPS_L1_CA_SUBFRAME_FSM_H_
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#include <boost/statechart/state_machine.hpp>
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#include "concurrent_queue.h"
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#include "GPS_L1_CA.h"
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#include "gps_navigation_message.h"
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#include "gps_ephemeris.h"
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#include "gps_iono.h"
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#include "gps_almanac.h"
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#include "gps_utc_model.h"
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namespace sc = boost::statechart;
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namespace mpl = boost::mpl;
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struct gps_subframe_fsm_S0;
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struct gps_subframe_fsm_S1;
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struct gps_subframe_fsm_S2;
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struct gps_subframe_fsm_S3;
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struct gps_subframe_fsm_S4;
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struct gps_subframe_fsm_S5;
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struct gps_subframe_fsm_S6;
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struct gps_subframe_fsm_S7;
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struct gps_subframe_fsm_S8;
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struct gps_subframe_fsm_S9;
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struct gps_subframe_fsm_S10;
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struct gps_subframe_fsm_S11;
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/*!
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* \brief This class implements a Finite State Machine that handles the decoding
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* of the GPS L1 C/A NAV message
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*/
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class GpsL1CaSubframeFsm : public sc::state_machine< GpsL1CaSubframeFsm, gps_subframe_fsm_S0 >
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{
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public:
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GpsL1CaSubframeFsm(); //!< The constructor starts the Finite State Machine
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void clear_flag_new_subframe();
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// channel and satellite info
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int i_channel_ID; //!< Channel id
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unsigned int i_satellite_PRN; //!< Satellite PRN number
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Gps_Navigation_Message d_nav; //!< GPS L1 C/A navigation message object
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// GPS SV and System parameters
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Gps_Ephemeris ephemeris; //!< Object that handles GPS ephemeris parameters
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Gps_Almanac almanac; //!< Object that handles GPS almanac data
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Gps_Utc_Model utc_model; //!< Object that handles UTM model parameters
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Gps_Iono iono; //!< Object that handles ionospheric parameters
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char d_subframe[GPS_SUBFRAME_LENGTH];
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int d_subframe_ID;
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bool d_flag_new_subframe;
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char d_GPS_frame_4bytes[GPS_WORD_LENGTH];
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double d_preamble_time_ms;
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void gps_word_to_subframe(int position); //!< inserts the word in the correct position of the subframe
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/*!
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* \brief This function decodes a NAv message subframe and pushes the information to the right queues
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*/
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void gps_subframe_to_nav_msg();
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//FSM EVENTS
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void Event_gps_word_valid(); //!< FSM event: the received word is valid
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void Event_gps_word_invalid(); //!< FSM event: the received word is not valid
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void Event_gps_word_preamble(); //!< FSM event: word preamble detected
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};
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#endif
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