From 817f61bbdd180a2854116c85ccf1020e561c523f Mon Sep 17 00:00:00 2001
From: Tom Rondeau <tom@trondeau.com>
Date: Tue, 14 Jun 2016 10:48:00 -0700
Subject: digital: Complete overhaul of protocol handling
See documentation for details. In brief:
- digital_protocol_* classes added (replace packet header blocks)
- header_buffer class added
- Lots of QA
- default packet formatter: contains access code and payload length
fields.
- counter packet formatter: also contains the bits/sym in the payload
modulation and a packet number counter.
- Also adds QA code and the infrastructure for C++ QA code in
gr-digital.
- New block to use the packet formatter objects.
- The header and payload are transmitted as PDU messages out of different ports.
- header_buffer class for header formatting.
- Used by packet_formatter_x classes to more easily add and format
header data for transmission.
- New blocks that parse headers.
- Handles either hard or soft bits. Produces an info message to
instruct payload demod.
- 'receive mode' to header_buffer class.
- Designed to make extracting fields from the received header bits
easier for packet formatter classes. Use extract_field[N] to get
the different fields out of a collected set of header bits. *
Docs describing both functions with small examples for how to use
them.
- Don't force access code to be a multiple of 8
- need to verify everything else handles this correctly.
- Throw an exception in the ctor if setting the code failed and emit a
log message.
Committed-By: Martin Braun <martin.braun@ettus.com>
---
gr-digital/lib/protocol_parser_b_impl.cc | 83 ++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
create mode 100644 gr-digital/lib/protocol_parser_b_impl.cc
(limited to 'gr-digital/lib/protocol_parser_b_impl.cc')
diff --git a/gr-digital/lib/protocol_parser_b_impl.cc b/gr-digital/lib/protocol_parser_b_impl.cc
new file mode 100644
index 0000000000..642fcae812
--- /dev/null
+++ b/gr-digital/lib/protocol_parser_b_impl.cc
@@ -0,0 +1,83 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2015-2016 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "protocol_parser_b_impl.h"
+#include <gnuradio/io_signature.h>
+#include <stdexcept>
+#include <volk/volk.h>
+#include <iostream>
+
+namespace gr {
+ namespace digital {
+
+ protocol_parser_b::sptr
+ protocol_parser_b::make(const header_format_base::sptr &format)
+ {
+ return gnuradio::get_initial_sptr
+ (new protocol_parser_b_impl(format));
+ }
+
+
+ protocol_parser_b_impl::protocol_parser_b_impl(const header_format_base::sptr &format)
+ : sync_block("protocol_parser_b",
+ io_signature::make(1, 1, sizeof(char)),
+ io_signature::make(0, 0, 0))
+ {
+ d_format = format;
+
+ d_out_port = pmt::mp("info");
+ message_port_register_out(d_out_port);
+ }
+
+ protocol_parser_b_impl::~protocol_parser_b_impl()
+ {
+ }
+
+ int
+ protocol_parser_b_impl::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];
+
+ int count = 0;
+ std::vector<pmt::pmt_t> info;
+ bool ret = d_format->parse(noutput_items, in, info, count);
+
+ if(ret) {
+ for(size_t i = 0; i < info.size(); i++) {
+ message_port_pub(d_out_port, info[i]);
+ }
+ }
+ else {
+ message_port_pub(d_out_port, pmt::PMT_F);
+ }
+
+ return count;
+ }
+
+ } /* namespace digital */
+} /* namespace gr */
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