source.h

Go to the documentation of this file.

/* -*- c++ -*- */
/*
 * Copyright 2018 Lime Microsystems info@limemicro.com
 *
 * GNU Radio 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, or (at your option)
 * any later version.
 *
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_LIMESDR_SOURCE_H
#define INCLUDED_LIMESDR_SOURCE_H

#include <gnuradio/block.h>
#include <limesdr/api.h>

namespace gr {
namespace limesdr {
class LIMESDR_API source : virtual public gr::block {
    public:
    typedef boost::shared_ptr<source> sptr;

    /*!
     * @brief Return a shared_ptr to a new instance of source.
     *
     * To avoid accidental use of raw pointers, source's
     * constructor is private.  limesdr::source::make is the public
     * interface for creating new instances.
     *
     * @param serial Device serial number. Cannot be left blank.
     *
     * @param channel_mode Channel and mode selection A(1), B(2), (A+B)MIMO(3).
     *
     * @param filename Path to file if file switch is turned on.
     *
     * @return a new limesdr source block object
     */
    static sptr make(std::string serial, int channel_mode, const std::string& filename);

    /**
     * Set center frequency
     *
     * @param   freq Frequency to set in Hz
     *
     * @param   chan Channel (not used)
     * 
     * @return  actual center frequency in Hz
     */
    virtual double set_center_freq(double freq, size_t chan = 0) = 0;

    /**
     * Set which antenna is used
     *
     * @param   antenna Antenna to set: None(0), LNAH(1), LNAL(2), LNAW(3), AUTO(255)
     *     
     * @param   channel  Channel selection: A(LMS_CH_0),B(LMS_CH_1).
     */
    virtual void set_antenna(int antenna, int channel = 0) = 0;
    /**
     * Set NCO (numerically controlled oscillator).
     * By selecting NCO frequency
     * configure NCO. When NCO frequency is 0, NCO is off.
     *
     * @param   nco_freq       NCO frequency in Hz.
     *      
     * @param   channel        Channel index.
     */
    virtual void set_nco(float nco_freq, int channel) = 0;
    /**
     * Set analog filters.
     * 
     * @param   analog_bandw  Channel filter bandwidth in Hz.
     * 
     * @param   channel  Channel selection: A(LMS_CH_0),B(LMS_CH_1).
     * 
     * @return actual filter bandwidth in Hz
     */
    virtual double set_bandwidth(double analog_bandw, int channel = 0) = 0;
    /**
     * Set digital filters (GFIR).
     * 
     * @param   digital_bandw  Channel filter bandwidth in Hz.
     * 
     * @param   channel  Channel selection: A(LMS_CH_0),B(LMS_CH_1).
     */
    virtual void set_digital_filter(double digital_bandw, int channel) = 0;
    /**
     * Set the combined gain value in dB
     * 
     * @note actual gain depends on LO frequency and analog LPF configuration and
     * resulting output signal level may be different when those values are changed
     *
     * @param   gain_dB        Desired gain: [0,70] RX
     * 
     * @param   channel        Channel selection: A(LMS_CH_0),B(LMS_CH_1).
     * 
     * @return actual gain in dB
     */
    virtual unsigned set_gain(unsigned gain_dB, int channel = 0) = 0;
    /**
     * Set the same sample rate for both channels.
     *
     * @param   rate  Sample rate in S/s.
     * 
     * @return actual sample rate in S/s
     */
    virtual double set_sample_rate(double rate) = 0;
    /**
     * Set oversampling for both channels.
     *
     * @param oversample Oversampling value (0 (default),1,2,4,8,16,32).
     */
    virtual void set_oversampling(int oversample) = 0;
    /**
     * Perform device calibration.
     *
     * @param   bandw Set calibration bandwidth in Hz.
     * 
     * @param   channel  Channel selection: A(LMS_CH_0),B(LMS_CH_1).
     */
    virtual void calibrate(double bandw, int channel = 0) = 0;   
    /**
     * Set stream buffer size
     *
     * @param   size FIFO buffer size in samples
     */
    virtual void set_buffer_size(uint32_t size) = 0;
};
} // namespace limesdr
} // namespace gr

#endif