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/* -*- c++ -*- */
/*
* Copyright 2011 Free Software Foundation, Inc.
*
* 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_FCD_SOURCE_C_H
#define INCLUDED_FCD_SOURCE_C_H
#include <gr_hier_block2.h>
#include <gr_audio_source.h>
class fcd_source_c;
typedef boost::shared_ptr<fcd_source_c> fcd_source_c_sptr;
/*!
* \brief Return a shared_ptr to a new instance of fcd_source_c.
*
* This is effectively the public constructor. To avoid accidental use
* of raw pointers, fcd_source_c's constructor is private.
* fcd_make_source_c is the public interface for creating new instances.
*/
fcd_source_c_sptr fcd_make_source_c(const std::string device_name = "");
/*! \brief Funcube Dongle source block.
*
* This class provides a Funcube Dongle soure block by wrapping the
* USB audio interface and the USB HID control interface of the Funcube
* Dongle into one convenient source block.
*
* The Funcube Dongle needs to have firmware 18f or later for the control
* interface to work properly. As of early 2011, FCDs still come with firmware
* 18b. You can use qthid 2.2 (not 3) to upgrade the firmware: http://qthid.sf.net
*/
class fcd_source_c : public gr_hier_block2
{
public:
fcd_source_c(const std::string device_name = ""); // FIXME: should be private
~fcd_source_c();
/*! \brief Set frequency with Hz resolution.
* \param freq The frequency in Hz
*
* Set the frequency of the Funcube Dongle with 1 Hz resolution applying
* the frequency correction set by set_freq_corr().
*
* \see set_freq_khz()
*/
void set_freq(int freq);
/*! \brief Set frequency with Hz resolution.
* \param freq The frequency in Hz
*
* This is a convenience function that uses float parameter in order to allow
* using engineering notation in GRC.
*
* \see set_freq_khz()
*/
void set_freq(float freq);
/*! \brief Set frequency with kHz resolution.
* \param freq The frequency in kHz
*
* Sets the frequency of the Funcube Dongle with 1 kHz resolution
* applying the frequency correction set by set_freq_corr().
*
* \see set_freq()
*/
void set_freq_khz(int freq);
/*! \brief Set LNA gain.
* \param gain The new gain in dB.
*
* Set the LNA gain in the FCD. Valid range is -5 to 30. Although
* the LNA gain in the FCD takes enumerated values corresponding to
* 2.5 dB steps, you can can call this method with any float value
* and it will be rounded to the nearest valid value.
*
* By default the FCD is set to 20 dB and this is a good value for most
* cases. In noisy areas you may try to reduce the gain.
*/
void set_lna_gain(float gain);
/*! \brief Set new frequency correction.
* \param ppm The new frequency correction in parts per million
*
* Version 1.1 FCDs (S/N 810 or later) need a correction of -12 ppm.
* Earlier FCDs need roughly -120 ppm (default for gr-fcd).
*
* Ref: http://www.funcubedongle.com/?p=617
*/
void set_freq_corr(int ppm);
/*! \brief Set DC offset correction.
* \param _dci DC correction for I component (-1.0 to 1.0)
* \param _dcq DC correction for Q component (-1.0 to 1.0)
*
* Set DC offset correction in the device. Default is 0.0.
*/
void set_dc_corr(double _dci, double _dcq);
/*! \brief Set IQ phase and gain balance.
* \param _gain The gain correction (-1.0 to 1.0)
* \param _phase The phase correction (-1.0 to 1.0)
*
* Set IQ phase and gain balance in the device. The default values
* are 0.0 for phase and 1.0 for gain.
*/
void set_iq_corr(double _gain, double _phase);
private:
audio_source::sptr fcd; /*!< The audio input source */
int d_freq_corr; /*!< The frequency correction in ppm */
int d_freq_req; /*!< The latest requested frequency in Hz */
};
#endif /* INCLUDED_FCD_SOURCE_C_H */
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