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gr-satnogs/lib/morse_decoder_impl.cc

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Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
/* -*- c++ -*- */
/*
* gr-satnogs: SatNOGS GNU Radio Out-Of-Tree Module
*
* Copyright (C) 2016, 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>
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
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#include "morse_decoder_impl.h"
Add Morse code debug source block Now, with the Morse code debug source block the testing of the decoder can begin. Add at the examples directory a small flowgraph that connects the debug source block with the decoder.
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#include <satnogs/log.h>
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
namespace gr
{
namespace satnogs
{
Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
morse_decoder::sptr
morse_decoder::make (char unrecognized_char)
Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
{
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
return gnuradio::get_initial_sptr (
new morse_decoder_impl (unrecognized_char));
Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
}
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
void
morse_decoder_impl::symbol_msg_handler (pmt::pmt_t msg)
Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
{
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
morse_symbol_t s;
s = (morse_symbol_t) pmt::to_long (msg);
Add Morse code debug source block Now, with the Morse code debug source block the testing of the decoder can begin. Add at the examples directory a small flowgraph that connects the debug source block with the decoder.
2016-01-22 21:10:06 +01:00
switch(s) {
case MORSE_DOT:
LOG_DEBUG("Dot received");
break;
case MORSE_DASH:
LOG_DEBUG("Dash received");
break;
case MORSE_S_SPACE:
LOG_DEBUG("Short space received");
break;
case MORSE_L_SPACE:
LOG_DEBUG("Long space received");
break;
default:
LOG_ERROR("Unknown Morse symbol");
}
Morse tree traversal is working Depending the received symbol the tree is traversed towards the leafs. At each step the corresponding decode-able character is appended at a string buffer. TODOs: * Add logic in the decoder to retrieve the decoded words from the tree * Create a debug source block
2016-01-21 20:33:08 +01:00
}
/*
* The private constructor
*/
morse_decoder_impl::morse_decoder_impl (char unrecognized_char) :
gr::block ("morse_decoder",
gr::io_signature::make (0, 0, 0),
gr::io_signature::make (0, 0, 0)),
d_morse_tree (unrecognized_char)
{
/* Register the input msg handler */
message_port_register_in (pmt::mp ("in"));
set_msg_handler (
pmt::mp ("in"),
boost::bind (&morse_decoder_impl::symbol_msg_handler, this, _1));
Add morse decoder block. The morse decoder is not yet functional. The decoding is performed using a binary tree. Left child, corresponds to a received dot whereas right to a received dash.
2016-01-19 18:35:37 +01:00
}
} /* namespace satnogs */
} /* namespace gr */