/*!
 * \file gnss_sdr_fpga_sample_counter.h
 * \brief Simple block to report the current receiver time based on the output
 * of the tracking or telemetry blocks
 * \author Javier Arribas 2018. jarribas(at)cttc.es
 *
 *
 * -------------------------------------------------------------------------
 *
 * Copyright (C) 2010-2018  (see AUTHORS file for a list of contributors)
 *
 * GNSS-SDR is a software defined Global Navigation
 *          Satellite Systems receiver
 *
 * This file is part of GNSS-SDR.
 *
 * GNSS-SDR 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.
 *
 * GNSS-SDR 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 GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 *
 * -------------------------------------------------------------------------
 */

#ifndef GNSS_SDR_GNSS_SDR_FPGA_SAMPLE_COUNTER_H_
#define GNSS_SDR_GNSS_SDR_FPGA_SAMPLE_COUNTER_H_

#include <boost/shared_ptr.hpp>
#include <gnuradio/block.h>
#include <gnuradio/types.h>  // for gr_vector_const_void_star
#include <cstdint>
#include <string>

class gnss_sdr_fpga_sample_counter;

using gnss_sdr_fpga_sample_counter_sptr = boost::shared_ptr<gnss_sdr_fpga_sample_counter>;

gnss_sdr_fpga_sample_counter_sptr gnss_sdr_make_fpga_sample_counter(double _fs, int32_t _interval_ms);

class gnss_sdr_fpga_sample_counter : public gr::block
{
public:
    ~gnss_sdr_fpga_sample_counter();
    int general_work(int noutput_items,
        gr_vector_int &ninput_items,
        gr_vector_const_void_star &input_items,
        gr_vector_void_star &output_items);

private:
    friend gnss_sdr_fpga_sample_counter_sptr gnss_sdr_make_fpga_sample_counter(double _fs, int32_t _interval_ms);
    gnss_sdr_fpga_sample_counter(double _fs, int32_t _interval_ms);
    uint32_t test_register(uint32_t writeval);
    void configure_samples_per_output(uint32_t interval);
    void close_device(void);
    void open_device(void);
    bool start();

    bool stop();
    void wait_for_interrupt(void);
    uint32_t samples_per_output;
    uint32_t samples_per_report;
    double fs;
    uint64_t sample_counter;
    uint64_t last_sample_counter;

    uint32_t interval_ms;
    uint64_t current_T_rx_ms;  // Receiver time in ms since the beginning of the run
    uint32_t current_s;        // Receiver time in seconds, modulo 60
    bool flag_m;               // True if the receiver has been running for at least 1 minute
    uint32_t current_m;        // Receiver time in minutes, modulo 60
    bool flag_h;               // True if the receiver has been running for at least 1 hour
    uint32_t current_h;        // Receiver time in hours, modulo 24
    bool flag_days;            // True if the receiver has been running for at least 1 day
    uint32_t current_days;     // Receiver time in days since the beginning of the run
    int32_t report_interval_ms;

    bool flag_enable_send_msg;
    int32_t fd;                             // driver descriptor
    volatile uint32_t *map_base;            // driver memory map
    std::string device_name = "/dev/uio2";  // HW device name
    bool is_open;
};

#endif  // GNSS_SDR_GNSS_SDR_FPGA_SAMPLE_COUNTER_H_