Introduce 8b10b Decoder
This commit is contained in:
parent
0b7fed15e8
commit
c2d20fbead
|
@ -52,5 +52,6 @@ if(${INCLUDE_DEBUG_BLOCKS})
|
||||||
endif()
|
endif()
|
||||||
install(FILES
|
install(FILES
|
||||||
${enabled_blocks}
|
${enabled_blocks}
|
||||||
satnogs_quad_demod_filter_ff.xml DESTINATION share/gnuradio/grc/blocks
|
satnogs_quad_demod_filter_ff.xml
|
||||||
|
satnogs_decoder_8b10b.xml DESTINATION share/gnuradio/grc/blocks
|
||||||
)
|
)
|
||||||
|
|
|
@ -0,0 +1,48 @@
|
||||||
|
<?xml version="1.0"?>
|
||||||
|
<block>
|
||||||
|
<name>8b10b Decoder</name>
|
||||||
|
<key>satnogs_decoder_8b10b</key>
|
||||||
|
<category>[SatNOGS]</category>
|
||||||
|
<import>import satnogs</import>
|
||||||
|
<make>satnogs.decoder_8b10b($control_symbol, $max_frame_len,
|
||||||
|
$comp_type)</make>
|
||||||
|
|
||||||
|
<param>
|
||||||
|
<name>Control symbols</name>
|
||||||
|
<key>control_symbol</key>
|
||||||
|
<value>0011111010</value>
|
||||||
|
<type>string</type>
|
||||||
|
</param>
|
||||||
|
|
||||||
|
<param>
|
||||||
|
<name>Maximum frame length</name>
|
||||||
|
<key>max_frame_len</key>
|
||||||
|
<value>1500</value>
|
||||||
|
<type>int</type>
|
||||||
|
</param>
|
||||||
|
|
||||||
|
<param>
|
||||||
|
<name>Comparison type</name>
|
||||||
|
<key>comp_type</key>
|
||||||
|
<type>enum</type>
|
||||||
|
<option>
|
||||||
|
<name>Equality</name>
|
||||||
|
<key>0</key>
|
||||||
|
</option>
|
||||||
|
<option>
|
||||||
|
<name>Hamming</name>
|
||||||
|
<key>1</key>
|
||||||
|
</option>
|
||||||
|
</param>
|
||||||
|
|
||||||
|
<sink>
|
||||||
|
<name>in</name>
|
||||||
|
<type>byte</type>
|
||||||
|
</sink>
|
||||||
|
|
||||||
|
<source>
|
||||||
|
<name>pdu</name>
|
||||||
|
<type>message</type>
|
||||||
|
</source>
|
||||||
|
|
||||||
|
</block>
|
|
@ -67,5 +67,6 @@ endif()
|
||||||
|
|
||||||
install(FILES
|
install(FILES
|
||||||
${HEADER_FILES}
|
${HEADER_FILES}
|
||||||
quad_demod_filter_ff.h DESTINATION include/satnogs
|
quad_demod_filter_ff.h
|
||||||
|
decoder_8b10b.h DESTINATION include/satnogs
|
||||||
)
|
)
|
|
@ -0,0 +1,58 @@
|
||||||
|
/* -*- c++ -*- */
|
||||||
|
/*
|
||||||
|
* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
|
||||||
|
*
|
||||||
|
* Copyright (C) 2018, Libre Space Foundation <http://librespacefoundation.org/>
|
||||||
|
*
|
||||||
|
* This program 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 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef INCLUDED_SATNOGS_DECODER_8B10B_H
|
||||||
|
#define INCLUDED_SATNOGS_DECODER_8B10B_H
|
||||||
|
|
||||||
|
#include <satnogs/api.h>
|
||||||
|
#include <gnuradio/sync_block.h>
|
||||||
|
|
||||||
|
namespace gr
|
||||||
|
{
|
||||||
|
namespace satnogs
|
||||||
|
{
|
||||||
|
|
||||||
|
/*!
|
||||||
|
* \brief <+description of block+>
|
||||||
|
* \ingroup satnogs
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
class SATNOGS_API decoder_8b10b : virtual public gr::sync_block
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
typedef boost::shared_ptr<decoder_8b10b> sptr;
|
||||||
|
|
||||||
|
/*!
|
||||||
|
* \brief Return a shared_ptr to a new instance of satnogs::decoder_8b10b.
|
||||||
|
*
|
||||||
|
* To avoid accidental use of raw pointers, satnogs::decoder_8b10b's
|
||||||
|
* constructor is in a private implementation
|
||||||
|
* class. satnogs::decoder_8b10b::make is the public interface for
|
||||||
|
* creating new instances.
|
||||||
|
*/
|
||||||
|
static sptr make(const std::string& control_symbol,size_t max_frame_len,int comp_type);
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
// namespace satnogs
|
||||||
|
}// namespace gr
|
||||||
|
|
||||||
|
#endif /* INCLUDED_SATNOGS_DECODER_8B10B_H */
|
||||||
|
|
|
@ -65,7 +65,8 @@ list(APPEND satnogs_sources
|
||||||
noaa_apt_sink_impl.cc
|
noaa_apt_sink_impl.cc
|
||||||
frame_file_sink_impl.cc
|
frame_file_sink_impl.cc
|
||||||
iq_sink_impl.cc
|
iq_sink_impl.cc
|
||||||
quad_demod_filter_ff_impl.cc)
|
quad_demod_filter_ff_impl.cc
|
||||||
|
decoder_8b10b_impl.cc)
|
||||||
|
|
||||||
if(${INCLUDE_DEBUG_BLOCKS})
|
if(${INCLUDE_DEBUG_BLOCKS})
|
||||||
list(APPEND satnogs_sources ${satnogs_debug_sources})
|
list(APPEND satnogs_sources ${satnogs_debug_sources})
|
||||||
|
|
|
@ -0,0 +1,119 @@
|
||||||
|
/* -*- c++ -*- */
|
||||||
|
/*
|
||||||
|
* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
|
||||||
|
*
|
||||||
|
* Copyright (C) 2018, Libre Space Foundation <http://librespacefoundation.org/>
|
||||||
|
*
|
||||||
|
* This program 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 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
#include "config.h"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <gnuradio/io_signature.h>
|
||||||
|
#include "decoder_8b10b_impl.h"
|
||||||
|
#include <gnuradio/blocks/count_bits.h>
|
||||||
|
|
||||||
|
namespace gr
|
||||||
|
{
|
||||||
|
namespace satnogs
|
||||||
|
{
|
||||||
|
|
||||||
|
decoder_8b10b::sptr
|
||||||
|
decoder_8b10b::make (const std::string& control_symbol,
|
||||||
|
size_t max_frame_len, int comp_type)
|
||||||
|
{
|
||||||
|
return gnuradio::get_initial_sptr (
|
||||||
|
new decoder_8b10b_impl (control_symbol, max_frame_len, comp_type));
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The private constructor
|
||||||
|
*/
|
||||||
|
decoder_8b10b_impl::decoder_8b10b_impl (const std::string& control_symbol,
|
||||||
|
size_t max_frame_len, int comp_type) :
|
||||||
|
gr::sync_block ("decoder_8b10b",
|
||||||
|
gr::io_signature::make (1, 1, sizeof(char)),
|
||||||
|
gr::io_signature::make (0, 0, 0)),
|
||||||
|
d_max_frame_len (max_frame_len),
|
||||||
|
d_comp_type (comp_type),
|
||||||
|
d_control_symbol_pos (0),
|
||||||
|
d_control_symbol_neg (0),
|
||||||
|
d_data_reg (0)
|
||||||
|
{
|
||||||
|
message_port_register_out (pmt::mp ("pdu"));
|
||||||
|
if (!set_access_code (control_symbol)) {
|
||||||
|
GR_LOG_ERROR(d_logger, "control_symbol is not 10 bits");
|
||||||
|
throw std::out_of_range ("control_symbol is not 10 bits");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Our virtual destructor.
|
||||||
|
*/
|
||||||
|
decoder_8b10b_impl::~decoder_8b10b_impl ()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
bool
|
||||||
|
decoder_8b10b_impl::set_access_code (const std::string &control_symbol)
|
||||||
|
{
|
||||||
|
unsigned len = control_symbol.length (); // # of bytes in string
|
||||||
|
|
||||||
|
/* if the control sequence is not 10-bit then throw exception */
|
||||||
|
if (len != 10) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (size_t i = 0; i < len; i++) {
|
||||||
|
d_control_symbol_pos = (d_control_symbol_pos << 1)
|
||||||
|
| (control_symbol[i] & 0x1);
|
||||||
|
}
|
||||||
|
d_control_symbol_neg = ~d_control_symbol_pos;
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
decoder_8b10b_impl::work (int noutput_items,
|
||||||
|
gr_vector_const_void_star &input_items,
|
||||||
|
gr_vector_void_star &output_items)
|
||||||
|
{
|
||||||
|
const uint8_t *in = (const uint8_t *) input_items[0];
|
||||||
|
for (int i = 0; i < noutput_items; i++) {
|
||||||
|
|
||||||
|
d_data_reg = (d_data_reg << 1) | (in[i] & 0x1);
|
||||||
|
|
||||||
|
unsigned long long wrong_bits = (d_data_reg ^ d_control_symbol_pos)
|
||||||
|
& 0x3FF;
|
||||||
|
unsigned int nwrong = gr::blocks::count_bits64 (wrong_bits);
|
||||||
|
|
||||||
|
if (nwrong <= 1) {
|
||||||
|
d_data_reg = 0;
|
||||||
|
printf ("Packet found \n");
|
||||||
|
}
|
||||||
|
|
||||||
|
//GR_LOG_DEBUG(d_logger, boost::format ("Wrong number: %u") % wrong_bits);
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
// Tell runtime system how many output items we produced.
|
||||||
|
return noutput_items;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
/* namespace satnogs */
|
||||||
|
} /* namespace gr */
|
||||||
|
|
|
@ -0,0 +1,59 @@
|
||||||
|
/* -*- c++ -*- */
|
||||||
|
/*
|
||||||
|
* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
|
||||||
|
*
|
||||||
|
* Copyright (C) 2018, Libre Space Foundation <http://librespacefoundation.org/>
|
||||||
|
*
|
||||||
|
* This program 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 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef INCLUDED_SATNOGS_DECODER_8B10B_IMPL_H
|
||||||
|
#define INCLUDED_SATNOGS_DECODER_8B10B_IMPL_H
|
||||||
|
|
||||||
|
#include <satnogs/decoder_8b10b.h>
|
||||||
|
|
||||||
|
namespace gr
|
||||||
|
{
|
||||||
|
namespace satnogs
|
||||||
|
{
|
||||||
|
|
||||||
|
class decoder_8b10b_impl : public decoder_8b10b
|
||||||
|
{
|
||||||
|
private:
|
||||||
|
size_t d_max_frame_len;
|
||||||
|
int d_comp_type;
|
||||||
|
uint16_t d_control_symbol_pos;
|
||||||
|
uint16_t d_control_symbol_neg;
|
||||||
|
uint16_t d_data_reg;
|
||||||
|
|
||||||
|
public:
|
||||||
|
decoder_8b10b_impl (const std::string& control_symbol,
|
||||||
|
size_t max_frame_len, int comp_type);
|
||||||
|
~decoder_8b10b_impl ();
|
||||||
|
|
||||||
|
bool
|
||||||
|
set_access_code (const std::string &access_code);
|
||||||
|
|
||||||
|
// Where all the action really happens
|
||||||
|
int
|
||||||
|
work (int noutput_items, gr_vector_const_void_star &input_items,
|
||||||
|
gr_vector_void_star &output_items);
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
// namespace satnogs
|
||||||
|
}// namespace gr
|
||||||
|
|
||||||
|
#endif /* INCLUDED_SATNOGS_DECODER_8B10B_IMPL_H */
|
||||||
|
|
|
@ -32,6 +32,7 @@
|
||||||
#include "satnogs/frame_file_sink.h"
|
#include "satnogs/frame_file_sink.h"
|
||||||
#include "satnogs/iq_sink.h"
|
#include "satnogs/iq_sink.h"
|
||||||
#include "satnogs/quad_demod_filter_ff.h"
|
#include "satnogs/quad_demod_filter_ff.h"
|
||||||
|
#include "satnogs/decoder_8b10b.h"
|
||||||
%}
|
%}
|
||||||
|
|
||||||
|
|
||||||
|
@ -100,3 +101,5 @@ GR_SWIG_BLOCK_MAGIC2(satnogs, frame_file_sink);
|
||||||
GR_SWIG_BLOCK_MAGIC2(satnogs, iq_sink);
|
GR_SWIG_BLOCK_MAGIC2(satnogs, iq_sink);
|
||||||
%include "satnogs/quad_demod_filter_ff.h"
|
%include "satnogs/quad_demod_filter_ff.h"
|
||||||
GR_SWIG_BLOCK_MAGIC2(satnogs, quad_demod_filter_ff);
|
GR_SWIG_BLOCK_MAGIC2(satnogs, quad_demod_filter_ff);
|
||||||
|
%include "satnogs/decoder_8b10b.h"
|
||||||
|
GR_SWIG_BLOCK_MAGIC2(satnogs, decoder_8b10b);
|
||||||
|
|
Loading…
Reference in New Issue