README change

1 files changed, 71 insertions, 0 deletions

diff --git a/gnuradio-core/src/lib/io/microtune_4702.h b/gnuradio-core/src/lib/io/microtune_4702.h
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index 000000000..ccc66db71
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+++ b/gnuradio-core/src/lib/io/microtune_4702.h
@@ -0,0 +1,71 @@
+/* -*- 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_4702_H
+#define INCLUDED_MICROTUNE_4702_H
+
+#include <gr_core_api.h>
+#include <microtune_xxxx.h>
+
+/*!
+ * \brief class for controlling microtune 4702 tuner module
+ * \ingroup hardware
+ */
+
+class GR_CORE_API microtune_4702 : public microtune_xxxx   {
+public:
+  microtune_4702 (i2c_sptr i2c, int i2c_addr);
+
+  virtual ~microtune_4702 ();
+
+  /*!
+   * \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 of the tuner in Hz.
+   */
+  double get_output_freq ();
+
+ private:
+
+  i2c_sptr	d_i2c;
+  int		d_i2c_addr;
+  int		d_reference_divider;
+  bool		d_prescaler;	/* if set, higher charge pump current:
+				   faster tuning, worse phase noise
+				   for distance < 10kHz to the carrier */
+};
+
+#endif /* INCLUDED_MICROTUNE_4702_H */
+