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/* -*- c++ -*- */
/*
* Copyright 2001,2003 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* 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_MICROTUNE_4937_H
#define INCLUDED_MICROTUNE_4937_H
#include <microtune_xxxx.h>
/*!
* \brief class for controlling microtune 4937 tuner module
* \ingroup hardware
*/
class microtune_4937 : public microtune_xxxx {
public:
microtune_4937 (i2c_sptr i2c, int i2c_addr = 0x61);
virtual ~microtune_4937 ();
/*!
* \brief select RF frequency to be tuned to output frequency.
* \p freq is the requested frequency in Hz, \p actual_freq
* is set to the actual frequency tuned. It takes about 100 ms
* for the PLL to settle.
*
* \returns true iff sucessful.
*/
bool set_RF_freq (double freq, double *actual_freq);
/*!
* \returns true iff PLL is locked
*/
bool pll_locked_p ();
/*!
* \returns the output frequency (IF center freq) of the tuner in Hz.
*/
double get_output_freq ();
private:
i2c_sptr d_i2c;
int d_i2c_addr;
int d_reference_divider;
bool d_fast_tuning_p; /* if set, higher charge pump current:
faster tuning, worse phase noise
for distance < 10kHz to the carrier */
};
#endif /* INCLUDED_MICROTUNE_4937_H */
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