+++ /dev/null
-Johnathan Corgan <jcorgan@aeinet.com>
+++ /dev/null
-#
-# Copyright 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.
-#
-
-include $(top_srcdir)/Makefile.common
-
-SUBDIRS = src
-
-MOSTLYCLEANFILES = *~ *.tmp
\ No newline at end of file
+++ /dev/null
-This GNU Radio component implements (will implement) common radiopager
-signaling protocols such as POCSAG and FLEX.
-
-Current status (10/6/06):
-
-FLEX receiving is completed except for addition of BCH error correction.
-
-pager.slicer_fb() Accepts a complex baseband downconverted channel
- and outputs 4-level FSK symbols [0-3] as bytes.
-
-pager.flex_sync() Accepts 4FSK symbol stream at channel rate and
- outputs four phases of FLEX data bits as bytes.
- Auto-shifts to 3200 bps as determined by received
- FLEX synchronization word.
-
-pager.flex_deinterleave() Accepts a single phase of FLEX data bits and performs
- deinterleaving on 256-bit blocks. Resulting code
- words are error corrected using BCH 32,21 ecc (stub)
- and converted into FLEX data words for output.
-
-pager.flex_parse() Sink block that accepts a single phase of FLEX data
- words and unpacks and parses individual pages. These are
- passed outside the data plane via gr_message's.
-
-pager.flex_decode() Combines the above blocks correctly to convert
- from downconverted baseband to pager messages
-
-usrp_flex.py Instantiates USRP receive chain to receive FLEX
- protocol pages. See command-line help for options.
- Right now this installs into $PREFIX/bin but will
- probably make it into gnuradio-examples.
-
-aypabtu.py Decodes FLEX pages from multiple rx channels in a range.
- Incomplete.
-
-Johnathan Corgan
-jcorgan@aeinet.com
+++ /dev/null
-#
-# Copyright 2004,2005,2006 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.
-#
-
-include $(top_srcdir)/Makefile.common
-
-EXTRA_DIST = \
- run_tests.in
-
-TESTS = \
- run_tests
-
-bin_SCRIPTS = \
- usrp_flex.py \
- aypabtu.py
-
-noinst_PYTHON = \
- qa_pager.py
-
-# Install this stuff so that it ends up as the gnuradio.pgr module
-# This usually ends up at:
-# ${prefix}/lib/python${python_version}/site-packages/gnuradio/pager
-
-ourpythondir = $(grpythondir)/pager
-ourlibdir = $(grpyexecdir)/pager
-
-INCLUDES = $(STD_DEFINES_AND_INCLUDES) $(PYTHON_CPPFLAGS)
-
-SWIGPYTHONARGS = $(SWIGPYTHONFLAGS) $(STD_DEFINES_AND_INCLUDES)
-
-ALL_IFILES = \
- $(LOCAL_IFILES) \
- $(NON_LOCAL_IFILES) \
- pager_flex_frame.i
-
-NON_LOCAL_IFILES = \
- $(GNURADIO_I)
-
-LOCAL_IFILES = \
- $(top_srcdir)/gr-pager/src/pager.i
-
-# These files are built by SWIG. The first is the C++ glue.
-# The second is the python wrapper that loads the _howto shared library
-# and knows how to call our extensions.
-
-BUILT_SOURCES = \
- pager_swig.cc \
- pager_swig.py
-
-# This gets pgr.py installed in the right place
-ourpython_PYTHON = \
- __init__.py \
- pager_swig.py \
- flex_demod.py \
- usrp_flex.py \
- aypabtu.py
-
-ourlib_LTLIBRARIES = _pager_swig.la
-
-# These are the source files that go into the shared library
-_pager_swig_la_SOURCES = \
- pager_swig.cc \
- pager_flex_frame.cc \
- pager_slicer_fb.cc \
- pager_flex_sync.cc \
- pager_flex_deinterleave.cc \
- pager_flex_parse.cc \
- pageri_bch3221.cc \
- pageri_flex_modes.cc \
- pageri_util.cc
- # Additional source modules here
-
-# magic flags
-_pager_swig_la_LDFLAGS = $(NO_UNDEFINED) -module -avoid-version
-
-# link the library against the c++ standard library
-_pager_swig_la_LIBADD = \
- $(PYTHON_LDFLAGS) \
- $(GNURADIO_CORE_LIBS) \
- -lstdc++
-
-pager_swig.cc pager_swig.py: $(ALL_IFILES)
- $(SWIG) $(SWIGPYTHONARGS) -module pager_swig -o pager_swig.cc $(LOCAL_IFILES)
-
-# These headers get installed in ${prefix}/include/gnuradio
-grinclude_HEADERS = \
- pager_slicer_fb.h \
- pager_flex_sync.h \
- pager_flex_deinterleave.h \
- pager_flex_parse.h \
- pager_flex_frame.h \
- pageri_bch3221.h \
- pageri_flex_modes.h \
- pageri_util.h
- # Additional header files here
-
-# These swig headers get installed in ${prefix}/include/gnuradio/swig
-swiginclude_HEADERS = \
- $(LOCAL_IFILES) \
- pager_flex_frame.i
-
-MOSTLYCLEANFILES = $(BUILT_SOURCES) *.pyc *~ *.tmp
-
-# Don't distribute output of swig
-dist-hook:
- @for file in $(BUILT_SOURCES); do echo $(RM) $(distdir)/$$file; done
- @for file in $(BUILT_SOURCES); do $(RM) $(distdir)/$$file; done
+++ /dev/null
-#
-# Copyright 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.
-#
-
-# The presence of this file turns this directory into a Python package
-
-from pager_swig import *
-from flex_demod import flex_demod
+++ /dev/null
-#!/usr/bin/env python
-
-from math import pi
-from gnuradio import gr, gru, usrp, optfir, audio, eng_notation, blks, pager
-from gnuradio.eng_option import eng_option
-from optparse import OptionParser
-from string import split, join, printable
-
-class usrp_source_c(gr.hier_block):
- """
- Create a USRP source object supplying complex floats.
-
- Selects user supplied subdevice or chooses first available one.
-
- Calibration value is the offset from the tuned frequency to
- the actual frequency.
- """
- def __init__(self, fg, subdev_spec, decim, gain=None, calibration=0.0):
- self._decim = decim
- self._src = usrp.source_c()
- if subdev_spec is None:
- subdev_spec = usrp.pick_rx_subdevice(self._src)
- self._subdev = usrp.selected_subdev(self._src, subdev_spec)
- self._src.set_mux(usrp.determine_rx_mux_value(self._src, subdev_spec))
- self._src.set_decim_rate(self._decim)
-
- # If no gain specified, set to midrange
- if gain is None:
- g = self._subdev.gain_range()
- gain = (g[0]+g[1])/2.0
-
- self._subdev.set_gain(gain)
- self._cal = calibration
-
- gr.hier_block.__init__(self, fg, self._src, self._src)
-
- def tune(self, freq):
- result = usrp.tune(self._src, 0, self._subdev, freq+self._cal)
- # TODO: deal with residual
-
- def rate(self):
- return self._src.adc_rate()/self._decim
-
-class channelizer(blks.analysis_filterbank):
- def __init__(self,
- fg, # Flow graph
- if_rate, # IF input sample rate (complex)
- channel_rate, # Final channel sample rate (complex)
- channel_pass, # Occupied spectrum for narrowband channel
- channel_stop): # Total channel + guard band
-
- num_channels = int(if_rate/channel_rate)
- taps = optfir.low_pass(1.0, if_rate, channel_pass, channel_stop, 0.1, 60)
- blks.analysis_filterbank.__init__(self, fg, num_channels, taps)
-
-class app_flow_graph(gr.flow_graph):
- def __init__(self, options, args, queue):
- gr.flow_graph.__init__(self)
- self.options = options
- self.args = args
-
- # FIXME: Parameterize
- #
- # Difference between upper and lower must evenly divide into USRP sample rate
- # and also must be divisible by 25000
- options.channel_rate = 25000
- options.channel_pass = 8000
- options.channel_stop = 10000
-
- if_rate = options.upper_freq - options.lower_freq
- center_freq = options.lower_freq + if_rate/2
- num_channels = int(if_rate/options.channel_rate)
- decim = int(64000000/if_rate)
-
- self.SRC = usrp_source_c(self, options.rx_board, decim, options.gain, options.calibration)
- self.CHAN = channelizer(self, if_rate, options.channel_rate, options.channel_pass, options.channel_stop)
-
- self.connect(self.SRC, self.CHAN)
- for i in range(num_channels):
- freq = options.lower_freq + i*options.channel_rate
- if freq > center_freq:
- freq -= if_rate/2
- else:
- freq += if_rate/2
- FLEX = pager.flex_demod(self, options.channel_rate, queue)
- self.connect((self.CHAN, i), FLEX.INPUT)
-
- self.SRC.tune(center_freq)
-
-def make_printable(data):
- return "".join(char for char in data if char in printable)
-
-def main():
- parser = OptionParser(option_class=eng_option)
- parser.add_option("", "--upper-freq", type="eng_float", help="lower Rx frequency", metavar="LOWER")
- parser.add_option("", "--lower-freq", type="eng_float", help="upper Rx frequency", metavar="UPPER")
- parser.add_option("-R", "--rx-board", type="subdev", help="select USRP Rx side A or B (default=first daughterboard found)", metavar="SIDE")
- parser.add_option("-c", "--calibration", type="eng_float", default=0.0, help="set frequency offset to Hz", metavar="Hz")
- parser.add_option("-g", "--gain", type="int", help="set RF gain", metavar="dB")
- (options, args) = parser.parse_args()
-
- # FIXME: parameter sanity checks
-
- queue = gr.msg_queue()
- fg = app_flow_graph(options, args, queue)
- try:
- fg.start()
- while 1:
- msg = queue.delete_head() # Blocking read
- fields = split(msg.to_string(), chr(128))
- print join([make_printable(field) for field in fields], '|')
-
- except KeyboardInterrupt:
- fg.stop()
-
-if __name__ == "__main__":
- main()
+++ /dev/null
-#
-# Copyright 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.
-#
-
-from gnuradio import gr, gru, optfir, blks
-from math import pi
-import pager_swig
-
-chan_rate = 16000
-
-class flex_demod:
- """
- FLEX pager protocol demodulation block.
-
- This block demodulates a band-limited, complex down-converted baseband
- channel into FLEX protocol frames.
-
- Flow graph (so far):
-
- RSAMP - Resample incoming stream to 16000 sps
- QUAD - Quadrature demodulator converts FSK to baseband amplitudes
- LPF - Low pass filter to remove noise prior to slicer
- SLICER - Converts input to one of four symbols (0, 1, 2, 3)
- SYNC - Converts symbol stream to four phases of FLEX blocks
- DEINTx - Deinterleaves FLEX blocks into datawords
- PARSEx - Parse a single FLEX phase worth of data words into pages
- ---
-
- @param fg: flowgraph
- @param channel_rate: incoming sample rate of the baseband channel
- @type sample_rate: integer
- """
-
-
- def __init__(self, fg, channel_rate, queue):
- k = chan_rate/(2*pi*4800) # 4800 Hz max deviation
- QUAD = gr.quadrature_demod_cf(k)
- self.INPUT = QUAD
-
- if channel_rate != chan_rate:
- interp = gru.lcm(channel_rate, chan_rate)/channel_rate
- decim = gru.lcm(channel_rate, chan_rate)/chan_rate
- RESAMP = blks.rational_resampler_ccf(fg, interp, decim)
- self.INPUT = RESAMP
-
- taps = optfir.low_pass(1.0, chan_rate, 3200, 6400, 0.1, 60)
- LPF = gr.fir_filter_fff(1, taps)
- SLICER = pager_swig.slicer_fb(.001, .00001) # Attack, decay
- SYNC = pager_swig.flex_sync(chan_rate)
-
- if channel_rate != chan_rate:
- fg.connect(RESAMP, QUAD, LPF, SLICER, SYNC)
- else:
- fg.connect(QUAD, LPF, SLICER, SYNC)
-
- DEINTA = pager_swig.flex_deinterleave()
- PARSEA = pager_swig.flex_parse(queue)
-
- DEINTB = pager_swig.flex_deinterleave()
- PARSEB = pager_swig.flex_parse(queue)
-
- DEINTC = pager_swig.flex_deinterleave()
- PARSEC = pager_swig.flex_parse(queue)
-
- DEINTD = pager_swig.flex_deinterleave()
- PARSED = pager_swig.flex_parse(queue)
-
- fg.connect((SYNC, 0), DEINTA, PARSEA)
- fg.connect((SYNC, 1), DEINTB, PARSEB)
- fg.connect((SYNC, 2), DEINTC, PARSEC)
- fg.connect((SYNC, 3), DEINTD, PARSED)
+++ /dev/null
-/*
- * 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.
- */
-
-%feature("autodoc","1");
-%include "exception.i"
-%import "gnuradio.i"
-
-%{
-#include "gnuradio_swig_bug_workaround.h" // mandatory bug fix
-#include "pager_flex_frame.h"
-#include "pager_slicer_fb.h"
-#include "pager_flex_sync.h"
-#include "pager_flex_deinterleave.h"
-#include "pager_flex_parse.h"
-#include <stdexcept>
-%}
-
-%include "pager_flex_frame.i"
-
-// ----------------------------------------------------------------
-
-GR_SWIG_BLOCK_MAGIC(pager,slicer_fb);
-
-pager_slicer_fb_sptr pager_make_slicer_fb(float alpha, float beta);
-
-class pager_slicer_fb : public gr_sync_block
-{
-private:
- pager_slicer_fb(float alpha, float beta);
-
-public:
-};
-
-// ----------------------------------------------------------------
-
-GR_SWIG_BLOCK_MAGIC(pager,flex_sync);
-
-pager_flex_sync_sptr pager_make_flex_sync(int rate);
-
-class pager_flex_sync : public gr_block
-{
-private:
- pager_flex_sync(int rate);
-
-public:
-};
-
-// ----------------------------------------------------------------
-
-GR_SWIG_BLOCK_MAGIC(pager,flex_deinterleave);
-
-pager_flex_deinterleave_sptr pager_make_flex_deinterleave();
-
-class pager_flex_deinterleave : public gr_sync_decimator
-{
-private:
- pager_flex_deinterleave();
-
-public:
-};
-
-// ----------------------------------------------------------------
-
-GR_SWIG_BLOCK_MAGIC(pager,flex_parse);
-
-pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue);
-
-class pager_flex_parse : public gr_block
-{
-private:
- pager_flex_parse(gr_msg_queue_sptr queue);
-
-public:
-};
+++ /dev/null
-/*
- * Copyright 2004,2006 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pager_flex_deinterleave.h>
-#include <pageri_bch3221.h>
-#include <pageri_util.h>
-#include <gr_io_signature.h>
-
-pager_flex_deinterleave_sptr pager_make_flex_deinterleave()
-{
- return pager_flex_deinterleave_sptr(new pager_flex_deinterleave());
-}
-
-pager_flex_deinterleave::pager_flex_deinterleave() :
- gr_sync_decimator("flex_deinterleave",
- gr_make_io_signature(1, 1, sizeof(unsigned char)),
- gr_make_io_signature(1, 1, sizeof(gr_int32)), 32)
-{
- set_output_multiple(8); // One FLEX block at a time
-}
-
-int pager_flex_deinterleave::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- const unsigned char *in = (const unsigned char *)input_items[0];
- gr_int32 *out = (gr_int32 *)output_items[0];
-
- // FLEX codewords are interleaved in blocks of 256 bits or 8, 32 bit
- // codes. To deinterleave we parcel each incoming bit into the MSB
- // of each codeword, then switch to MSB-1, etc. This is done by shifting
- // in the bits from the right on each codeword as the bits come in.
- // When we are done we have a FLEX block of eight codewords, ready for
- // conversion to data words.
- //
- // FLEX data words are recovered by reversing the bit order of the code
- // word, masking off the (reversed) ECC, and inverting the remainder of
- // the bits (!).
- //
- // The data portion of a FLEX frame consists of 11 of these deinterleaved
- // and converted blocks.
- //
- // set_output_multiple garauntees we have output space for at least
- // eight data words, and 256 bits are supplied on input
-
- int i, j;
- for (i = 0; i < 32; i++) {
- for (j = 0; j < 8; j++) {
- d_codewords[j] <<= 1;
- d_codewords[j] |= *in++;
- }
- }
-
- // Now convert code words into data words
- for (j = 0; j < 8; j++) {
- gr_int32 codeword = d_codewords[j];
-
- // Apply BCH 32,21 error correction
- // TODO: mark dataword when codeword fails ECC
- pageri_bch3221(codeword);
-
- // Reverse bit order
- codeword = pageri_reverse_bits32(codeword);
-
- // Mask off ECC then invert lower 21 bits
- codeword = (codeword & 0x001FFFFF)^0x001FFFFF;
-
- *out++ = codeword;
- }
-
- return j;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGER_FLEX_DEINTERLEAVE_H
-#define INCLUDED_PAGER_FLEX_DEINTERLEAVE_H
-
-#include <gr_sync_decimator.h>
-
-class pager_flex_deinterleave;
-typedef boost::shared_ptr<pager_flex_deinterleave> pager_flex_deinterleave_sptr;
-
-pager_flex_deinterleave_sptr pager_make_flex_deinterleave();
-
-/*!
- * \brief flex deinterleave description
- * \ingroup block
- */
-
-class pager_flex_deinterleave : public gr_sync_decimator
-{
-private:
- // Constructors
- friend pager_flex_deinterleave_sptr pager_make_flex_deinterleave();
- pager_flex_deinterleave();
-
- // One FLEX block of deinterleaved data
- gr_int32 d_codewords[8];
-
-public:
-
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
-
-#endif /* INCLUDED_PAGER_FLEX_DEINTERLEAVE_H */
+++ /dev/null
-/*
- * Copyright 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <pager_flex_frame.h>
-
-pager_flex_frame_sptr pager_make_flex_frame()
-{
- return pager_flex_frame_sptr(new pager_flex_frame());
-}
-
-pager_flex_frame::pager_flex_frame()
-{
-}
-
-pager_flex_frame::~pager_flex_frame()
-{
-}
+++ /dev/null
-/*
- * Copyright 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_PAGER_FLEX_FRAME_H
-#define INCLUDED_PAGER_FLEX_FRAME_H
-
-#include <boost/shared_ptr.hpp>
-
-class pager_flex_frame;
-typedef boost::shared_ptr<pager_flex_frame> pager_flex_frame_sptr;
-
-/*!
- * \brief public constructor for pager_flex_frame
- */
-pager_flex_frame_sptr pager_make_flex_frame();
-
-/*!
- * \brief flex_frame.
- */
-class pager_flex_frame {
- // Constructor is private to force use of shared_ptr
- pager_flex_frame();
- friend pager_flex_frame_sptr pager_make_flex_frame();
-
-public:
- ~pager_flex_frame();
-};
-
-#endif /* INCLUDED_PAGER_FLEX_FRAME_H */
+++ /dev/null
-/*
- * Copyright 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.
- */
-
-class pager_flex_frame;
-typedef boost::shared_ptr<pager_flex_frame> pager_flex_frame_sptr;
-%template(pager_flex_frame_sptr) boost::shared_ptr<pager_flex_frame>;
-
-%rename(flex_frame) pager_make_flex_frame;
-pager_flex_frame_sptr pager_make_flex_frame();
-
-/*!
- * \brief flex_frame.
- */
-class pager_flex_frame {
- pager_flex_frame();
-
-public:
-};
-
+++ /dev/null
-/*
- * Copyright 2004,2006 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pager_flex_parse.h>
-#include <pageri_bch3221.h>
-#include <gr_io_signature.h>
-#include <ctype.h>
-#include <iostream>
-
-pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue)
-{
- return pager_flex_parse_sptr(new pager_flex_parse(queue));
-}
-
-pager_flex_parse::pager_flex_parse(gr_msg_queue_sptr queue) :
- gr_sync_block("flex_parse",
- gr_make_io_signature(1, 1, sizeof(gr_int32)),
- gr_make_io_signature(0, 0, 0)),
- d_queue(queue)
-{
- d_count = 0;
-}
-
-int pager_flex_parse::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- const gr_int32 *in = (const gr_int32 *)input_items[0];
-
- int i = 0;
- while (i < noutput_items) {
- // Accumulate one whole frame's worth of data words (88 of them)
- d_datawords[d_count] = *in++; i++;
- if (++d_count == 88) {
- parse_data();
- d_count = 0;
- }
- }
-
- return i;
-}
-
-/* FLEX data frames (that is, 88 data words per phase recovered after sync,
- symbol decoding, dephasing, deinterleaving, error correction, and conversion
- from codewords to data words) start with a block information word containing
- indices of the page address field and page vector fields.
-*/
-
-void pager_flex_parse::parse_capcode(gr_int32 aw1, gr_int32 aw2)
-{
- d_laddr = (aw1 < 0x008001L) ||
- (aw1 > 0x1E0000L) ||
- (aw1 > 0x1E7FFEL);
-
- if (d_laddr)
- d_capcode = aw1+((aw2^0x001FFFFF)<<15)+0x1F9000; // Don't ask
- else
- d_capcode = aw1-0x8000;
-}
-
-void pager_flex_parse::parse_data()
-{
- // Block information word is the first data word in frame
- gr_int32 biw = d_datawords[0];
-
- // Nothing to see here, please move along
- if (biw == 0 || biw == 0x001FFFFF)
- return;
-
- // Vector start index is bits 15-10
- // Address start address is bits 9-8, plus one for offset
- int voffset = (biw >> 10) & 0x3f;
- int aoffset = ((biw >> 8) & 0x03) + 1;
-
- //printf("BIW:%08X AW:%02i-%02i\n", biw, aoffset, voffset);
-
- // Iterate through pages and dispatch to appropriate handler
- for (int i = aoffset; i < voffset; i++) {
- int j = voffset+i-aoffset; // Start of vector field for address @ i
-
- if (d_datawords[i] == 0x00000000 ||
- d_datawords[i] == 0x001FFFFF)
- continue; // Idle codewords, invalid address
-
- parse_capcode(d_datawords[i], d_datawords[i+1]);
- if (d_laddr)
- i++;
-
- if (d_capcode < 0) // Invalid address, skip
- continue;
-
- // Parse vector information word for address @ offset 'i'
- gr_int32 viw = d_datawords[j];
- d_type = (page_type_t)((viw >> 4) & 0x00000007);
- int mw1 = (viw >> 7) & 0x00000007F;
- int len = (viw >> 14) & 0x0000007F;
-
- if (is_numeric_page(d_type))
- len &= 0x07;
- int mw2 = mw1+len;
-
- if (mw1 == 0 && mw2 == 0)
- continue; // Invalid VIW
-
- if (is_tone_page(d_type))
- mw1 = mw2 = 0;
-
- if (mw1 > 87 || mw2 > 87)
- continue; // Invalid offsets
-
- d_payload.str("");
- d_payload << d_capcode << FIELD_DELIM << d_type << FIELD_DELIM;
-
- if (is_alphanumeric_page(d_type))
- parse_alphanumeric(mw1, mw2-1, j);
- else if (is_numeric_page(d_type))
- parse_numeric(mw1, mw2, j);
- else if (is_tone_page(d_type))
- parse_tone_only();
- else
- parse_unknown(mw1, mw2);
-
- //std::cout << d_payload.str() << std::endl;
- //fflush(stdout);
-
- gr_message_sptr msg = gr_make_message_from_string(std::string(d_payload.str()));
- d_queue->handle(msg);
- }
-}
-
-void pager_flex_parse::parse_alphanumeric(int mw1, int mw2, int j)
-{
- int frag;
- bool cont;
-
- if (!d_laddr) {
- frag = (d_datawords[mw1] >> 11) & 0x03;
- cont = (d_datawords[mw1] >> 10) & 0x01;
- mw1++;
- }
- else {
- frag = (d_datawords[j+1] >> 11) & 0x03;
- cont = (d_datawords[j+1] >> 10) & 0x01;
- mw2--;
- }
-
- d_payload << frag << FIELD_DELIM;
- d_payload << cont << FIELD_DELIM;
-
- for (int i = mw1; i <= mw2; i++) {
- gr_int32 dw = d_datawords[i];
- unsigned char ch;
-
- if (i > mw1 || frag != 0x03) {
- ch = dw & 0x7F;
- if (ch != 0x03)
- d_payload << ch;
- }
-
- ch = (dw >> 7) & 0x7F;
- if (ch != 0x03) // Fill
- d_payload << ch;
-
- ch = (dw >> 14) & 0x7F;
- if (ch != 0x03) // Fill
- d_payload << ch;
- }
-}
-
-void pager_flex_parse::parse_numeric(int mw1, int mw2, int j)
-{
- // Get first dataword from message field or from second
- // vector word if long address
- gr_int32 dw;
- if (!d_laddr) {
- dw = d_datawords[mw1];
- mw1++;
- mw2++;
- }
- else {
- dw = d_datawords[j+1];
- }
-
- unsigned char digit = 0;
- int count = 4;
- if (d_type == FLEX_NUMBERED_NUMERIC)
- count += 10; // Skip 10 header bits for numbered numeric pages
- else
- count += 2; // Otherwise skip 2
-
- for (int i = mw1; i <= mw2; i++) {
- for (int k = 0; k < 21; k++) {
- // Shift LSB from data word into digit
- digit = (digit >> 1) & 0x0F;
- if (dw & 0x01)
- digit ^= 0x08;
- dw >>= 1;
- if (--count == 0) {
- if (digit != 0x0C) // Fill
- d_payload << flex_bcd[digit];
- count = 4;
- }
- }
-
- dw = d_datawords[i];
- }
-}
-
-void pager_flex_parse::parse_tone_only()
-{
-}
-
-void pager_flex_parse::parse_unknown(int mw1, int mw2)
-{
-}
+++ /dev/null
-/*
- * Copyright 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_PAGER_FLEX_PARSE_H
-#define INCLUDED_PAGER_FLEX_PARSE_H
-
-#include <gr_sync_block.h>
-#include <gr_msg_queue.h>
-#include <pageri_flex_modes.h>
-#include <sstream>
-
-class pager_flex_parse;
-typedef boost::shared_ptr<pager_flex_parse> pager_flex_parse_sptr;
-
-pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue);
-
-/*!
- * \brief flex parse description
- * \ingroup block
- */
-
-#define FIELD_DELIM ((unsigned char)128)
-
-class pager_flex_parse : public gr_sync_block
-{
-private:
- // Constructors
- friend pager_flex_parse_sptr pager_make_flex_parse(gr_msg_queue_sptr queue);
- pager_flex_parse(gr_msg_queue_sptr queue);
-
- std::ostringstream d_payload;
- gr_msg_queue_sptr d_queue; // Destination for decoded pages
-
- int d_count; // Count of received codewords
- gr_int32 d_datawords[88]; // 11 blocks of 8 32-bit words
-
- page_type_t d_type; // Current page type
- int d_capcode; // Current page destination address
- bool d_laddr; // Current page has long address
-
- void parse_data(); // Handle a frame's worth of data
- void parse_capcode(gr_int32 aw1, gr_int32 aw2);
- void parse_alphanumeric(int mw1, int mw2, int j);
- void parse_numeric(int mw1, int mw2, int j);
- void parse_tone_only();
- void parse_unknown(int mw1, int mw2);
-
-public:
- int work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
-
-#endif /* INCLUDED_PAGER_FLEX_PARSE_H */
+++ /dev/null
-/*
- * Copyright 2004,2006 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pager_flex_sync.h>
-#include <pageri_flex_modes.h>
-#include <pageri_bch3221.h>
-#include <pageri_util.h>
-#include <gr_io_signature.h>
-#include <gr_count_bits.h>
-
-pager_flex_sync_sptr pager_make_flex_sync(int rate)
-{
- return pager_flex_sync_sptr(new pager_flex_sync(rate));
-}
-
-// FLEX sync block takes input from sliced baseband stream [0-3] at specified
-// channel rate. Symbol timing is established based on receiving one of the
-// defined FLEX protocol synchronization words. The block outputs one FLEX frame
-// worth of bits on each output phase for the data portion of the frame. Unused phases
-// get all zeros, which are considered idle code words.
-
-pager_flex_sync::pager_flex_sync(int rate) :
- gr_block ("flex_sync",
- gr_make_io_signature (1, 1, sizeof(unsigned char)),
- gr_make_io_signature (4, 4, sizeof(unsigned char))),
- d_sync(rate/1600) // Maximum samples per baud
-{
- d_rate = rate;
- enter_idle();
-}
-
-void pager_flex_sync::forecast(int noutput_items, gr_vector_int &inputs_required)
-{
- // samples per bit X number of outputs needed
- int items = noutput_items*d_spb;
- for (unsigned int i = 0; i < inputs_required.size(); i++)
- inputs_required[i] = items;
-}
-
-int pager_flex_sync::index_avg(int start, int end)
-{
- // modulo average
- if (start < end)
- return (end + start)/2;
- else
- return ((end + start)/2 + d_spb/2) % d_spb;
-}
-
-bool pager_flex_sync::test_sync(unsigned char sym)
-{
- // 64-bit FLEX sync code:
- // AAAA:BBBBBBBB:CCCC
- //
- // Where BBBBBBBB is always 0xA6C6AAAA
- // and AAAA^CCCC is 0xFFFF
- //
- // Specific values of AAAA determine what bps and encoding the
- // packet is beyond the frame information word
- //
- // First we match on the marker field with a hamming distance < 4
- // Then we match on the outer code with a hamming distance < 4
-
- d_sync[d_index] = (d_sync[d_index] << 1) | (sym < 2);
- gr_int64 val = d_sync[d_index];
- gr_int32 marker = ((val & 0x0000FFFFFFFF0000ULL)) >> 16;
-
- if (gr_count_bits32(marker^FLEX_SYNC_MARKER) < 4) {
- gr_int32 code = ((val & 0xFFFF000000000000ULL) >> 32) |
- (val & 0x000000000000FFFFULL);
-
- for (int i = 0; i < num_flex_modes; i++) {
- if (gr_count_bits32(code^flex_modes[i].sync) < 4) {
- d_mode = i;
- return true;
- }
- }
-
- // Marker received but doesn't match known codes
- // All codes have high word inverted to low word
- unsigned short high = (code & 0xFFFF0000) >> 16;
- unsigned short low = code & 0x0000FFFF;
- unsigned short syn = high^low;
- if (syn == 0xFFFF)
- fprintf(stderr, "Unknown sync code detected: %08X\n", code);
- }
-
- return false;
-}
-
-void pager_flex_sync::enter_idle()
-{
- d_state = ST_IDLE;
- d_index = 0;
- d_start = 0;
- d_center = 0;
- d_end = 0;
- d_count = 0;
- d_mode = 0;
- d_baudrate = 1600;
- d_levels = 2;
- d_spb = d_rate/d_baudrate;
- d_bit_a = 0;
- d_bit_b = 0;
- d_bit_c = 0;
- d_bit_d = 0;
- d_hibit = false;
- fflush(stdout);
-}
-
-void pager_flex_sync::enter_syncing()
-{
- d_start = d_index;
- d_state = ST_SYNCING;
-}
-
-void pager_flex_sync::enter_sync1()
-{
- d_state = ST_SYNC1;
- d_end = d_index;
- d_center = index_avg(d_start, d_end); // Center of goodness
- d_count = 0;
- //printf("SYNC1:%08X ", flex_modes[d_mode].sync);
-}
-
-void pager_flex_sync::enter_sync2()
-{
- d_state = ST_SYNC2;
- d_count = 0;
- d_baudrate = flex_modes[d_mode].baud;
- d_levels = flex_modes[d_mode].levels;
- d_spb = d_rate/d_baudrate;
-
- if (d_baudrate == 3200) {
- // Oversampling buffer just got halved
- d_center = d_center/2;
-
- // We're here at the center of a 1600 baud bit
- // So this hack puts the index and bit counter
- // in the right place for 3200 bps.
- d_index = d_index/2-d_spb/2;
- d_count = -1;
- }
-}
-
-void pager_flex_sync::enter_data()
-{
- d_state = ST_DATA;
- d_count = 0;
-}
-
-void pager_flex_sync::parse_fiw()
-{
- // Nothing is done with these now, but these will end up getting
- // passed as metadata when mblocks are available
-
- // Bits 31-28 are frame number related, but unknown function
- // This might be a checksum
- d_unknown2 = pageri_reverse_bits8((d_fiw >> 24) & 0xF0);
-
- // Cycle is bits 27-24, reversed
- d_cycle = pageri_reverse_bits8((d_fiw >> 20) & 0xF0);
-
- // Frame is bits 23-17, reversed
- d_frame = pageri_reverse_bits8((d_fiw >> 16) & 0xFE);
-
- // Bits 16-11 are some sort of marker, usually identical across
- // many frames but sometimes changes between frames or modes
- d_unknown1 = (d_fiw >> 11) & 0x3F;
-
- //printf("CYC:%02i FRM:%03i\n", d_cycle, d_frame);
-}
-
-int pager_flex_sync::output_symbol(unsigned char sym)
-{
- // Here is where we output a 1 or 0 on each phase according
- // to current FLEX mode and symbol value. Unassigned phases
- // are zero from the enter_idle() initialization.
- //
- // FLEX can transmit the data portion of the frame at either
- // 1600 bps or 3200 bps, and can use either two- or four-level
- // FSK encoding.
- //
- // At 1600 bps, 2-level, a single "phase" is transmitted with bit
- // value '0' using level '3' and bit value '1' using level '0'.
- //
- // At 1600 bps, 4-level, a second "phase" is transmitted, and the
- // di-bits are encoded with a gray code:
- //
- // Symbol Phase 1 Phase 2
- // ------ ------- -------
- // 0 1 1
- // 1 1 0
- // 2 0 0
- // 3 0 1
- //
- // At 1600 bps, 4-level, these are called PHASE A and PHASE B.
- //
- // At 3200 bps, the same 1 or 2 bit encoding occurs, except that
- // additionally two streams are interleaved on alternating symbols.
- // Thus, PHASE A (and PHASE B if 4-level) are decoded on one symbol,
- // then PHASE C (and PHASE D if 4-level) are decoded on the next.
-
- int bits = 0;
-
- if (d_baudrate == 1600) {
- d_bit_a = (sym < 2);
- if (d_levels == 4)
- d_bit_b = (sym == 0) || (sym == 3);
-
- *d_phase_a++ = d_bit_a;
- *d_phase_b++ = d_bit_b;
- *d_phase_c++ = d_bit_c;
- *d_phase_d++ = d_bit_d;
- bits++;
- }
- else {
- if (!d_hibit) {
- d_bit_a = (sym < 2);
- if (d_levels == 4)
- d_bit_b = (sym == 0) || (sym == 3);
- d_hibit = true;
- }
- else {
- d_bit_c = (sym < 2);
- if (d_levels == 4)
- d_bit_d = (sym == 0) || (sym == 3);
- d_hibit = false;
-
- *d_phase_a++ = d_bit_a;
- *d_phase_b++ = d_bit_b;
- *d_phase_c++ = d_bit_c;
- *d_phase_d++ = d_bit_d;
- bits++;
- }
- }
-
- return bits;
-}
-
-int pager_flex_sync::general_work(int noutput_items,
- gr_vector_int &ninput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- const unsigned char *in = (const unsigned char *)input_items[0];
- d_phase_a = (unsigned char *)output_items[0];
- d_phase_b = (unsigned char *)output_items[1];
- d_phase_c = (unsigned char *)output_items[2];
- d_phase_d = (unsigned char *)output_items[3];
-
- int i = 0, j = 0;
- int ninputs = ninput_items[0];
-
- while (i < ninputs && j < noutput_items) {
- unsigned char sym = *in++; i++;
- d_index = ++d_index % d_spb;
-
- switch (d_state) {
- case ST_IDLE:
- // Continually compare the received symbol stream
- // against the known FLEX sync words.
- if (test_sync(sym))
- enter_syncing();
- break;
-
- case ST_SYNCING:
- // Wait until we stop seeing sync, then calculate
- // the center of the bit period (d_center)
- if (!test_sync(sym))
- enter_sync1();
- break;
-
- case ST_SYNC1:
- // Skip 16 bits of dotting, then accumulate 32 bits
- // of Frame Information Word.
- if (d_index == d_center) {
- d_fiw = (d_fiw << 1) | (sym > 1);
- if (++d_count == 48) {
- // FIW is accumulated, call BCH to error correct it
- pageri_bch3221(d_fiw);
- parse_fiw();
- enter_sync2();
- }
- }
- break;
-
- case ST_SYNC2:
- // This part and the remainder of the frame are transmitted
- // at either 1600 bps or 3200 bps based on the received
- // FLEX sync word. The second SYNC header is 25ms of idle bits
- // at either speed.
- if (d_index == d_center) {
- // Skip 25 ms = 40 bits @ 1600 bps, 80 @ 3200 bps
- if (++d_count == d_baudrate/40)
- enter_data();
- }
- break;
-
- case ST_DATA:
- // The data portion of the frame is 1760 ms long at either
- // baudrate. This is 2816 bits @ 1600 bps and 5632 bits @ 3200 bps.
- // The output_symbol() routine decodes and doles out the bits
- // to each of the four transmitted phases of FLEX interleaved codes.
- if (d_index == d_center) {
- j += output_symbol(sym);
- if (++d_count == d_baudrate*1760/1000)
- enter_idle();
- }
- break;
-
- default:
- assert(0); // memory corruption of d_state if ever gets here
- break;
- }
- }
-
- consume_each(i);
- return j;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGER_FLEX_SYNC_H
-#define INCLUDED_PAGER_FLEX_SYNC_H
-
-#include <gr_block.h>
-
-class pager_flex_sync;
-typedef boost::shared_ptr<pager_flex_sync> pager_flex_sync_sptr;
-typedef std::vector<gr_int64> gr_int64_vector;
-
-pager_flex_sync_sptr pager_make_flex_sync(int rate);
-
-/*!
- * \brief flex sync description
- * \ingroup block
- */
-
-class pager_flex_sync : public gr_block
-{
-private:
- // Constructors
- friend pager_flex_sync_sptr pager_make_flex_sync(int rate);
- pager_flex_sync(int rate);
-
- // State machine transitions
- void enter_idle();
- void enter_syncing();
- void enter_sync1();
- void enter_sync2();
- void enter_data();
-
- int index_avg(int start, int end);
- bool test_sync(unsigned char sym);
- void parse_fiw();
- int output_symbol(unsigned char sym);
-
- // Simple state machine
- enum state_t { ST_IDLE, ST_SYNCING, ST_SYNC1, ST_SYNC2, ST_DATA };
- state_t d_state;
-
- int d_rate; // Incoming sample rate
- int d_index; // Index into current baud
- int d_start; // Start of good sync
- int d_center; // Center of bit
- int d_end; // End of good sync
- int d_count; // Bit counter
-
- int d_mode; // Current packet mode
- int d_baudrate; // Current decoding baud rate
- int d_levels; // Current decoding levels
- int d_spb; // Current samples per baud
- bool d_hibit; // Alternating bit indicator for 3200 bps
-
- gr_int32 d_fiw; // Frame information word
- int d_frame; // Current FLEX frame
- int d_cycle; // Current FLEX cycle
- int d_unknown1;
- int d_unknown2;
-
- unsigned char d_bit_a;
- unsigned char d_bit_b;
- unsigned char d_bit_c;
- unsigned char d_bit_d;
-
- unsigned char *d_phase_a;
- unsigned char *d_phase_b;
- unsigned char *d_phase_c;
- unsigned char *d_phase_d;
-
- gr_int64_vector d_sync; // Trial synchronizers
-
-public:
- void forecast(int noutput_items, gr_vector_int &inputs_required);
-
- int general_work(int noutput_items,
- gr_vector_int &ninput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
-
-#endif /* INCLUDED_PAGER_FLEX_SYNC_H */
+++ /dev/null
-/*
- * Copyright 2004,2006 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pager_slicer_fb.h>
-#include <gr_io_signature.h>
-
-pager_slicer_fb_sptr pager_make_slicer_fb(float alpha, float beta)
-{
- return pager_slicer_fb_sptr(new pager_slicer_fb(alpha, beta));
-}
-
-pager_slicer_fb::pager_slicer_fb(float alpha, float beta) :
- gr_sync_block ("slicer_fb",
- gr_make_io_signature (1, 1, sizeof(float)),
- gr_make_io_signature (1, 1, sizeof(unsigned char)))
-{
- d_alpha = alpha;
- d_beta = beta;
- d_max = 0.0;
- d_hi = 0.0;
- d_avg = 0.0;
- d_lo = 0.0;
- d_min = 0.0;
-}
-
-// Tracks average, minimum, and peak, then converts input into one of:
-//
-// [0, 1, 2, 3]
-unsigned char pager_slicer_fb::slice(float sample)
-{
- unsigned char decision;
-
- // Update DC level and remove
- d_avg = d_avg*(1.0-d_alpha)+sample*d_alpha;
- sample -= d_avg;
-
- if (sample > 0) {
- if (sample > d_hi) { // In max region
- d_max = d_max*(1.0-d_alpha) + sample*d_alpha;
- decision = 3;
- }
- else {
- d_max -= (d_max-d_avg)*d_beta; // decay otherwise
- decision = 2;
- }
- }
- else {
- if (sample < d_lo) { // In min region
- d_min = d_min*(1.0-d_alpha) + sample*d_alpha;
- decision = 0;
- }
- else {
- d_min -= (d_min-d_avg)*d_beta; // decay otherwise
- decision = 1;
- }
- }
-
- d_hi = d_max*2.0/3.0;
- d_lo = d_min*2.0/3.0;
-
- //fprintf(stderr, "%f %d\n", sample, decision);
- return decision;
-}
-
-int pager_slicer_fb::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
-{
- float *iptr = (float *) input_items[0];
- unsigned char *optr = (unsigned char *) output_items[0];
-
- int size = noutput_items;
-
- for (int i = 0; i < size; i++)
- *optr++ = slice(*iptr++);
-
- return noutput_items;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGER_SLICER_FB_H
-#define INCLUDED_PAGER_SLICER_FB_H
-
-#include <gr_sync_block.h>
-
-class pager_slicer_fb;
-typedef boost::shared_ptr<pager_slicer_fb> pager_slicer_fb_sptr;
-
-pager_slicer_fb_sptr pager_make_slicer_fb(float alpha, float beta);
-
-/*!
- * \brief slicer description
- * \ingroup block
- */
-class pager_slicer_fb : public gr_sync_block
-{
-private:
- friend pager_slicer_fb_sptr pager_make_slicer_fb(float alpha, float beta);
- pager_slicer_fb(float alpha, float beta);
-
- unsigned char slice(float sample);
-
- float d_alpha; // Attack constant
- float d_beta; // Decay constant
- float d_max; // Maximum value for symbol comparison
- float d_hi; // High side decision boundary
- float d_avg; // Average value for DC offset subtraction
- float d_lo; // Low side decision boundary
- float d_min; // Minimum value for symbol comparison
-
-public:
- int work (int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items);
-};
-
-#endif /* INCLUDED_PAGER_SLICER_FB_H */
+++ /dev/null
-/*
- * Copyright 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pageri_bch3221.h>
-
-// Corrects supplied data word according to BCH3221 encoding and
-// returns the number of errors detected/corrected.
-//
-// Not implemented yet
-
-int pageri_bch3221(gr_int32 &data)
-{
- return 0;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGERI_BCH3221_H
-#define INCLUDED_PAGERI_BCH3221_H
-
-#include <gr_types.h>
-
-// Perform BCH (32,21) error correction on supplied data
-// Return number of errors found/corrected (0, 1, or 2)
-int pageri_bch3221(gr_int32 &data);
-
-#endif /* INCLUDED_PAGERI_BCH3221_H */
+++ /dev/null
-/*
- * Copyright 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.
- */
-
-#include "pageri_flex_modes.h"
-
-const flex_mode_t flex_modes[] =
-{
- { 0x870C78F3, 1600, 2 },
- { 0xB0684F97, 1600, 4 },
-// { 0xUNKNOWN, 3200, 2 },
- { 0xDEA0215F, 3200, 4 },
- { 0x4C7CB383, 3200, 4 }
-};
-
-const int num_flex_modes = sizeof(flex_modes)/sizeof(flex_modes[0]);
-
-unsigned char flex_bcd[17] = "0123456789 U -][";
-
-int find_flex_mode(gr_int32 sync_code)
-{
- for (int i = 0; i < num_flex_modes; i++)
- if (flex_modes[i].sync == sync_code)
- return i;
-
- // Not found
- return -1;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGERI_FLEX_MODES_H
-#define INCLUDED_PAGERI_FLEX_MODES_H
-
-#include <gr_types.h>
-
-#define FLEX_SYNC_MARKER 0xA6C6AAAA
-
-typedef struct flex_mode
-{
- gr_int32 sync; // Outer synchronization code
- unsigned int baud; // Baudrate of SYNC2 and DATA
- unsigned int levels; // FSK encoding of SYNC2 and DATA
-}
-flex_mode_t;
-
-extern const flex_mode_t flex_modes[];
-extern const int num_flex_modes;
-int find_flex_mode(gr_int32 sync_code);
-extern unsigned char flex_bcd[];
-
-typedef enum {
- FLEX_SECURE,
- FLEX_UNKNOWN,
- FLEX_TONE,
- FLEX_STANDARD_NUMERIC,
- FLEX_SPECIAL_NUMERIC,
- FLEX_ALPHANUMERIC,
- FLEX_BINARY,
- FLEX_NUMBERED_NUMERIC,
- NUM_FLEX_PAGE_TYPES
-}
-page_type_t;
-
-inline bool is_alphanumeric_page(page_type_t type)
-{
- return (type == FLEX_ALPHANUMERIC ||
- type == FLEX_SECURE);
-}
-
-inline bool is_numeric_page(page_type_t type)
-{
- return (type == FLEX_STANDARD_NUMERIC ||
- type == FLEX_SPECIAL_NUMERIC ||
- type == FLEX_NUMBERED_NUMERIC);
-}
-
-inline bool is_tone_page(page_type_t type)
-{
- return (type == FLEX_TONE);
-}
-
-#endif // INCLUDED_PAGERI_FLEX_MODES_H
+++ /dev/null
-/*
- * Copyright 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <pageri_util.h>
-
-unsigned char pageri_reverse_bits8(unsigned char val)
-{
- // This method was attributed to Rich Schroeppel in the Programming
- // Hacks section of Beeler, M., Gosper, R. W., and Schroeppel, R.
- // HAKMEM. MIT AI Memo 239, Feb. 29, 1972.
- //
- // Reverses 8 bits in 5 machine operations with 64 bit arch
- return (val * 0x0202020202ULL & 0x010884422010ULL) % 1023;
-}
-
-gr_int32 pageri_reverse_bits32(gr_int32 val)
-{
- gr_int32 out = 0x00000000;
- out |= (pageri_reverse_bits8((val >> 24) & 0x000000FF) );
- out |= (pageri_reverse_bits8((val >> 16) & 0x000000FF) << 8);
- out |= (pageri_reverse_bits8((val >> 8) & 0x000000FF) << 16);
- out |= (pageri_reverse_bits8((val ) & 0x000000FF) << 24);
- return out;
-}
+++ /dev/null
-/*
- * Copyright 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_PAGERI_UTIL_H
-#define INCLUDED_PAGERI_UTIL_H
-
-#include <gr_types.h>
-
-unsigned char pageri_reverse_bits8(unsigned char val);
-gr_int32 pageri_reverse_bits32(gr_int32 val);
-
-#endif /* INCLUDED_PAGERI_UTIL_H */
+++ /dev/null
-#!/usr/bin/env python
-#
-# Copyright 2004,2006 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.
-#
-
-from gnuradio import gr, gr_unittest
-import pager_swig
-
-class qa_pgr(gr_unittest.TestCase):
-
- def setUp (self):
- self.fg = gr.flow_graph ()
-
- def tearDown (self):
- self.fg = None
-
-if __name__ == '__main__':
- gr_unittest.main ()
+++ /dev/null
-#!/bin/sh
-
-# 1st parameter is absolute path to component source directory
-# 2nd parameter is absolute path to component build directory
-# 3rd parameter is path to Python QA directory
-
-@top_builddir@/run_tests.sh \
- @abs_top_srcdir@/gr-pager \
- @abs_top_builddir@/gr-pager \
- @srcdir@
+++ /dev/null
-#!/usr/bin/env python
-
-from gnuradio import gr, gru, usrp, optfir, eng_notation, blks, pager
-from gnuradio.eng_option import eng_option
-from optparse import OptionParser
-import time, os, sys
-from string import split, join
-
-"""
-This example application demonstrates receiving and demodulating the
-FLEX pager protocol.
-
-A receive chain is built up of the following signal processing
-blocks:
-
-USRP - Daughter board source generating complex baseband signal.
-CHAN - Low pass filter to select channel bandwidth
-AGC - Automatic gain control leveling signal at [-1.0, +1.0]
-FLEX - FLEX pager protocol decoder
-
-The following are required command line parameters:
-
--f FREQ USRP receive frequency
-
-The following are optional command line parameters:
-
--R SUBDEV Daughter board specification, defaults to first found
--c FREQ Calibration offset. Gets added to receive frequency.
- Defaults to 0.0 Hz.
--g GAIN Daughterboard gain setting. Defaults to mid-range.
--r RFSQL RF squelch in db. Defaults to -50.0.
-
-Once the program is running, ctrl-break (Ctrl-C) stops operation.
-"""
-
-class usrp_source_c(gr.hier_block):
- """
- Create a USRP source object supplying complex floats.
-
- Selects user supplied subdevice or chooses first available one.
-
- Calibration value is the offset from the tuned frequency to
- the actual frequency.
- """
- def __init__(self, fg, subdev_spec, decim, gain=None, calibration=0.0):
- self._decim = decim
- self._src = usrp.source_c()
- if subdev_spec is None:
- subdev_spec = usrp.pick_rx_subdevice(self._src)
- self._subdev = usrp.selected_subdev(self._src, subdev_spec)
- self._src.set_mux(usrp.determine_rx_mux_value(self._src, subdev_spec))
- self._src.set_decim_rate(self._decim)
-
- # If no gain specified, set to midrange
- if gain is None:
- g = self._subdev.gain_range()
- gain = (g[0]+g[1])/2.0
-
- self._subdev.set_gain(gain)
- self._cal = calibration
-
- gr.hier_block.__init__(self, fg, self._src, self._src)
-
- def tune(self, freq):
- result = usrp.tune(self._src, 0, self._subdev, freq+self._cal)
- # TODO: deal with residual
-
- def rate(self):
- return self._src.adc_rate()/self._decim
-
-class app_flow_graph(gr.flow_graph):
- def __init__(self, options, args, queue):
- gr.flow_graph.__init__(self)
- self.options = options
- self.args = args
-
- USRP = usrp_source_c(self, # Flow graph
- options.rx_subdev_spec, # Daugherboard spec
- 256, # IF decimation ratio gets 250K if_rate
- options.gain, # Receiver gain
- options.calibration) # Frequency offset
- USRP.tune(options.frequency)
-
- if_rate = USRP.rate()
- channel_rate = 25000
- channel_decim = int(if_rate / channel_rate)
-
- CHAN_taps = optfir.low_pass(1.0, # Filter gain
- if_rate, # Sample rate
- 8000, # One sided modulation bandwidth
- 10000, # One sided channel bandwidth
- 0.1, # Passband ripple
- 60) # Stopband attenuation
-
- CHAN = gr.freq_xlating_fir_filter_ccf(channel_decim, # Decimation rate
- CHAN_taps, # Filter taps
- 0.0, # Offset frequency
- if_rate) # Sample rate
-
- AGC = gr.agc_cc(1.0/channel_rate, # Time constant
- 1.0, # Reference power
- 1.0, # Initial gain
- 1.0) # Maximum gain
-
- FLEX = pager.flex_demod(self, 25000, queue)
-
- self.connect(USRP, CHAN, AGC, FLEX.INPUT)
-
-def main():
- parser = OptionParser(option_class=eng_option)
- parser.add_option("-f", "--frequency", type="eng_float",
- help="set receive frequency to Hz", metavar="Hz")
- parser.add_option("-R", "--rx-subdev-spec", type="subdev",
- help="select USRP Rx side A or B", metavar="SUBDEV")
- parser.add_option("-c", "--calibration", type="eng_float", default=0.0,
- help="set frequency offset to Hz", metavar="Hz")
- parser.add_option("-g", "--gain", type="int", default=None,
- help="set RF gain", metavar="dB")
- (options, args) = parser.parse_args()
-
- if options.frequency < 1e6:
- options.frequency *= 1e6
-
- queue = gr.msg_queue()
-
- fg = app_flow_graph(options, args, queue)
- try:
- fg.start()
- while 1:
- msg = queue.delete_head() # Blocking read
- fields = split(msg.to_string(), chr(128))
- print join(fields, '|')
-
- except KeyboardInterrupt:
- fg.stop()
-
-if __name__ == "__main__":
- main()
projects / debian / gnuradio / commitdiff