mayhem-firmware/firmware/application/app_ert.cpp
Jared Boone bb3cb6f080 Push packet timestamping earlier in packet handling.
Ideally, it'd get pushed back into baseband, and baseband would correct for the length of the packet (based on preamble/access code match timestamp minus preamble/access code duration) to give the exact time the packet started.
2015-12-03 14:04:20 -08:00

96 lines
2.3 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* 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 2, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "app_ert.hpp"
#include "portapack.hpp"
using namespace portapack;
#include "manchester.hpp"
#include "lpc43xx_cpp.hpp"
using namespace lpc43xx;
ERTModel::ERTModel() {
receiver_model.set_baseband_configuration({
.mode = 6,
.sampling_rate = 4194304,
.decimation_factor = 1,
});
receiver_model.set_baseband_bandwidth(1750000);
log_file.open_for_append("ert.txt");
}
std::string ERTModel::on_packet(const ERTPacketMessage& message) {
rtc::RTC received_at;
rtcGetTime(&RTCD1, &received_at);
std::string entry;
if( message.packet.preamble == 0x555516a3 ) {
entry += "IDM ";
}
if( message.packet.preamble == 0x1f2a60 ) {
entry += "SCM ";
}
const ManchesterDecoder decoder(message.packet.payload, message.packet.bits_received);
const auto hex_formatted = format_manchester(decoder);
entry += hex_formatted.data;
entry += "/";
entry += hex_formatted.errors;
if( log_file.is_ready() ) {
log_file.write_entry(received_at, entry);
}
return entry;
}
namespace ui {
void ERTView::on_show() {
Console::on_show();
auto& message_map = context().message_map();
message_map.register_handler(Message::ID::ERTPacket,
[this](Message* const p) {
const auto message = static_cast<const ERTPacketMessage*>(p);
this->log(this->model.on_packet(*message));
}
);
}
void ERTView::on_hide() {
auto& message_map = context().message_map();
message_map.unregister_handler(Message::ID::ERTPacket);
Console::on_hide();
}
void ERTView::log(const std::string& s) {
writeln(s);
}
} /* namespace ui */