3 * Copyright 2001,2003 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
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19 * the Free Software Foundation, Inc., 51 Franklin Street,
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23 #ifndef INCLUDED_MICROTUNE_4937_H
24 #define INCLUDED_MICROTUNE_4937_H
26 #include <microtune_xxxx.h>
29 * \brief class for controlling microtune 4937 tuner module
32 class microtune_4937 : public microtune_xxxx {
34 microtune_4937 (i2c_sptr i2c, int i2c_addr = 0x61);
35 virtual ~microtune_4937 ();
38 * \brief select RF frequency to be tuned to output frequency.
39 * \p freq is the requested frequency in Hz, \p actual_freq
40 * is set to the actual frequency tuned. It takes about 100 ms
41 * for the PLL to settle.
43 * \returns true iff sucessful.
45 bool set_RF_freq (double freq, double *actual_freq);
48 * \returns true iff PLL is locked
53 * \returns the output frequency (IF center freq) of the tuner in Hz.
55 double get_output_freq ();
61 int d_reference_divider;
62 bool d_fast_tuning_p; /* if set, higher charge pump current:
63 faster tuning, worse phase noise
64 for distance < 10kHz to the carrier */
67 #endif /* INCLUDED_MICROTUNE_4937_H */