gr_prefix.cc \
gr_prefs.cc \
gr_probe_avg_mag_sqrd_c.cc \
+ gr_probe_avg_mag_sqrd_cf.cc \
gr_probe_avg_mag_sqrd_f.cc \
gr_probe_signal_f.cc \
gr_pwr_squelch_cc.cc \
gr_prefix.h \
gr_prefs.h \
gr_probe_avg_mag_sqrd_c.h \
+ gr_probe_avg_mag_sqrd_cf.h \
gr_probe_avg_mag_sqrd_f.h \
gr_probe_signal_f.h \
gr_pwr_squelch_cc.h \
gr_prefix.i \
gr_prefs.i \
gr_probe_avg_mag_sqrd_c.i \
+ gr_probe_avg_mag_sqrd_cf.i \
gr_probe_avg_mag_sqrd_f.i \
gr_probe_signal_f.i \
gr_pwr_squelch_cc.i \
#include <gr_pll_carriertracking_cc.h>
#include <gr_pn_correlator_cc.h>
#include <gr_probe_avg_mag_sqrd_c.h>
+#include <gr_probe_avg_mag_sqrd_cf.h>
#include <gr_probe_avg_mag_sqrd_f.h>
#include <gr_probe_signal_f.h>
#include <gr_ofdm_correlator.h>
%include "gr_pll_carriertracking_cc.i"
%include "gr_pn_correlator_cc.i"
%include "gr_probe_avg_mag_sqrd_c.i"
+%include "gr_probe_avg_mag_sqrd_cf.i"
%include "gr_probe_avg_mag_sqrd_f.i"
%include "gr_probe_signal_f.i"
%include "gr_ofdm_correlator.i"
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2007 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 2, 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <gr_probe_avg_mag_sqrd_cf.h>
+#include <gr_io_signature.h>
+#include <cmath>
+
+gr_probe_avg_mag_sqrd_cf_sptr
+gr_make_probe_avg_mag_sqrd_cf(double threshold_db, double alpha)
+{
+ return gr_probe_avg_mag_sqrd_cf_sptr(new gr_probe_avg_mag_sqrd_cf(threshold_db, alpha));
+}
+
+gr_probe_avg_mag_sqrd_cf::gr_probe_avg_mag_sqrd_cf (double threshold_db, double alpha)
+ : gr_sync_block ("probe_avg_mag_sqrd_cf",
+ gr_make_io_signature(1, 1, sizeof(gr_complex)),
+ gr_make_io_signature(1, 1, sizeof(float))),
+ d_iir(alpha), d_unmuted(false), d_level(0)
+{
+ set_threshold (threshold_db);
+}
+
+gr_probe_avg_mag_sqrd_cf::~gr_probe_avg_mag_sqrd_cf()
+{
+}
+
+
+int
+gr_probe_avg_mag_sqrd_cf::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ const gr_complex *in = (const gr_complex *) input_items[0];
+ float *out = (float *) output_items[0];
+
+ for (int i = 0; i < noutput_items; i++){
+ out[i] = d_iir.prev_output();
+ double mag_sqrd = in[i].real()*in[i].real() + in[i].imag()*in[i].imag();
+ d_iir.filter(mag_sqrd); // computed for side effect: prev_output()
+ }
+
+ d_unmuted = d_iir.prev_output() >= d_threshold;
+ d_level = d_iir.prev_output();
+ return noutput_items;
+}
+
+double
+gr_probe_avg_mag_sqrd_cf::threshold() const
+{
+ return 10 * std::log10(d_threshold);
+}
+
+void
+gr_probe_avg_mag_sqrd_cf::set_threshold(double decibels)
+{
+ // convert to absolute threshold (mag squared)
+ d_threshold = std::pow(10.0, decibels/10);
+}
+
+void
+gr_probe_avg_mag_sqrd_cf::set_alpha(double alpha)
+{
+ d_iir.set_taps(alpha);
+}
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2006 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 2, 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_GR_PROBE_AVG_MAG_SQRD_CF_H
+#define INCLUDED_GR_PROBE_AVG_MAG_SQRD_CF_H
+
+#include <gr_sync_block.h>
+#include <gr_single_pole_iir.h>
+
+class gr_probe_avg_mag_sqrd_cf;
+typedef boost::shared_ptr<gr_probe_avg_mag_sqrd_cf> gr_probe_avg_mag_sqrd_cf_sptr;
+
+gr_probe_avg_mag_sqrd_cf_sptr
+gr_make_probe_avg_mag_sqrd_cf (double threshold_db, double alpha = 0.0001);
+
+/*!
+ * \brief compute avg magnitude squared.
+ * \ingroup sink
+ *
+ * input: gr_complex
+ * output: gr_float
+ *
+ * Compute a running average of the magnitude squared of the the input.
+ * The level and indication as to whether the level exceeds threshold
+ * can be retrieved with the level and unmuted accessors.
+ *
+ */
+class gr_probe_avg_mag_sqrd_cf : public gr_sync_block
+{
+ double d_threshold;
+ gr_single_pole_iir<double,double,double> d_iir;
+ bool d_unmuted;
+ double d_level;
+
+ friend gr_probe_avg_mag_sqrd_cf_sptr
+ gr_make_probe_avg_mag_sqrd_cf (double threshold_db, double alpha);
+
+ gr_probe_avg_mag_sqrd_cf (double threshold_db, double alpha);
+
+public:
+ ~gr_probe_avg_mag_sqrd_cf ();
+
+ int work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+
+ // ACCESSORS
+ bool unmuted () const { return d_unmuted; }
+ double level () const { return d_level; }
+
+ double threshold() const;
+
+ // SETTERS
+ void set_alpha (double alpha);
+ void set_threshold (double decibels);
+};
+
+#endif /* INCLUDED_GR_PROBE_AVG_MAG_SQRD_CF_H */
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2005 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 2, 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.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,probe_avg_mag_sqrd_cf);
+
+gr_probe_avg_mag_sqrd_cf_sptr
+gr_make_probe_avg_mag_sqrd_cf (double threshold_db, double alpha = 0.0001);
+
+class gr_probe_avg_mag_sqrd_cf : public gr_sync_block
+{
+public:
+ bool unmuted () const { return d_unmuted; }
+ double level () const { return d_level; }
+ void set_alpha (double alpha);
+ void set_threshold (double decibels);
+ double threshold();
+};
# Carrier Sensing Blocks
alpha = 0.001
thresh = 30 # in dB, will have to adjust
- self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha)
- fg.connect(self.chan_filt, self.probe)
+
+ if options.log_rx_power == True:
+ self.probe = gr.probe_avg_mag_sqrd_cf(thresh,alpha)
+ self.power_sink = gr.file_sink(gr.sizeof_float, "rxpower.dat")
+ fg.connect(self.chan_filt, self.probe, self.power_sink)
+ else:
+ self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha)
+ fg.connect(self.chan_filt, self.probe)
# Display some information about the setup
if self._verbose:
help="set fpga decimation rate to DECIM [default=%default]")
expert.add_option("", "--log", action="store_true", default=False,
help="Log all parts of flow graph to files (CAUTION: lots of data)")
+ expert.add_option("", "--log-rx-power", action="store_true", default=False,
+ help="Log receive signal power to file (CAUTION: lots of data)")
# Make a static method to call before instantiation
add_options = staticmethod(add_options)
print "decim: %3d" % (self._decim)
print "Rx Frequency: %s" % (eng_notation.num_to_str(self._rx_freq))
# print "Rx Frequency: %f" % (self._rx_freq)
-
+
def add_freq_option(parser):
"""
Hackery that has the -f / --freq option set both tx_freq and rx_freq
projects / debian / gnuradio / commitdiff