mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
Separate AIS packet and formatting code from app code.
This commit is contained in:
Jared Boone
parent
218d81fc60
commit
37d7d5b273
@ -170,6 +170,7 @@ CPPSRC = main.cpp \
|
||||
spectrum_color_lut.cpp \
|
||||
analog_audio_app.cpp \
|
||||
ais_baseband.cpp \
|
||||
ais_packet.cpp \
|
||||
ais_app.cpp \
|
||||
tpms_app.cpp \
|
||||
ert_app.cpp \
|
||||
|
||||
@ -21,124 +21,31 @@
|
||||
|
||||
#include "ais_app.hpp"
|
||||
|
||||
#include "string_format.hpp"
|
||||
|
||||
#include "portapack.hpp"
|
||||
using namespace portapack;
|
||||
|
||||
#include "crc.hpp"
|
||||
|
||||
#include "string_format.hpp"
|
||||
|
||||
#include <algorithm>
|
||||
|
||||
namespace baseband {
|
||||
namespace ais {
|
||||
namespace format {
|
||||
|
||||
using CRCFieldReader = ::FieldReader<baseband::Packet, BitRemapNone>;
|
||||
|
||||
struct PacketLengthRange {
|
||||
constexpr PacketLengthRange(
|
||||
) : min_bytes { 0 },
|
||||
max_bytes { 0 }
|
||||
{
|
||||
}
|
||||
|
||||
constexpr PacketLengthRange(
|
||||
const uint16_t min_bits,
|
||||
const uint16_t max_bits
|
||||
) : min_bytes { static_cast<uint8_t>(min_bits / 8U) },
|
||||
max_bytes { static_cast<uint8_t>(max_bits / 8U) }
|
||||
{
|
||||
// static_assert((min_bits & 7) == 0, "minimum bits not a multiple of 8");
|
||||
// static_assert((max_bits & 7) == 0, "minimum bits not a multiple of 8");
|
||||
}
|
||||
|
||||
constexpr bool contains(const size_t bit_count) const {
|
||||
return !is_above(bit_count) && !is_below(bit_count);
|
||||
}
|
||||
|
||||
constexpr bool is_above(const size_t bit_count) const {
|
||||
return (min() > bit_count);
|
||||
}
|
||||
|
||||
constexpr bool is_below(const size_t bit_count) const {
|
||||
return (max() < bit_count);
|
||||
}
|
||||
|
||||
constexpr size_t min() const {
|
||||
return min_bytes * 8;
|
||||
}
|
||||
|
||||
constexpr size_t max() const {
|
||||
return max_bytes * 8;
|
||||
}
|
||||
|
||||
private:
|
||||
const uint8_t min_bytes;
|
||||
const uint8_t max_bytes;
|
||||
};
|
||||
|
||||
static constexpr std::array<PacketLengthRange, 64> packet_length_range { {
|
||||
{ 0, 0 }, // 0
|
||||
{ 168, 168 }, // 1
|
||||
{ 168, 168 }, // 2
|
||||
{ 168, 168 }, // 3
|
||||
{ 168, 168 }, // 4
|
||||
{ 424, 424 }, // 5
|
||||
{ 0, 0 }, // 6
|
||||
{ 0, 0 }, // 7
|
||||
{ 0, 1008 }, // 8
|
||||
{ 0, 0 }, // 9
|
||||
{ 0, 0 }, // 10
|
||||
{ 0, 0 }, // 11
|
||||
{ 0, 0 }, // 12
|
||||
{ 0, 0 }, // 13
|
||||
{ 0, 0 }, // 14
|
||||
{ 0, 0 }, // 15
|
||||
{ 0, 0 }, // 16
|
||||
{ 0, 0 }, // 17
|
||||
{ 168, 168 }, // 18
|
||||
{ 0, 0 }, // 19
|
||||
{ 72, 160 }, // 20
|
||||
{ 272, 360 }, // 21
|
||||
{ 168, 168 }, // 22
|
||||
{ 160, 160 }, // 23
|
||||
{ 160, 168 }, // 24
|
||||
{ 0, 168 }, // 25
|
||||
{ 0, 0 }, // 26
|
||||
{ 0, 0 }, // 27
|
||||
{ 0, 0 }, // 28
|
||||
{ 0, 0 }, // 29
|
||||
{ 0, 0 }, // 30
|
||||
{ 0, 0 }, // 31
|
||||
} };
|
||||
|
||||
struct PacketLengthValidator {
|
||||
constexpr bool operator()(const uint_fast8_t message_id, const size_t length) const {
|
||||
return packet_length_range[message_id].contains(length);
|
||||
}
|
||||
};
|
||||
|
||||
struct PacketTooLong {
|
||||
constexpr bool operator()(const uint_fast8_t message_id, const size_t length) const {
|
||||
return packet_length_range[message_id].is_below(length);
|
||||
}
|
||||
};
|
||||
|
||||
static std::string format_latlon_normalized(const int32_t normalized) {
|
||||
static std::string latlon_normalized(const int32_t normalized) {
|
||||
const int32_t t = (normalized * 5) / 3;
|
||||
const int32_t degrees = t / (100 * 10000);
|
||||
const int32_t fraction = std::abs(t) % (100 * 10000);
|
||||
return to_string_dec_int(degrees) + "." + to_string_dec_int(fraction, 6, '0');
|
||||
}
|
||||
|
||||
static std::string format_mmsi(
|
||||
const MMSI& mmsi
|
||||
static std::string mmsi(
|
||||
const baseband::ais::MMSI& mmsi
|
||||
) {
|
||||
return to_string_dec_uint(mmsi, 9, '0');
|
||||
}
|
||||
|
||||
static std::string format_datetime(
|
||||
const DateTime& datetime
|
||||
static std::string datetime(
|
||||
const baseband::ais::DateTime& datetime
|
||||
) {
|
||||
return to_string_dec_uint(datetime.year, 4, '0') + "/" +
|
||||
to_string_dec_uint(datetime.month, 2, '0') + "/" +
|
||||
@ -148,7 +55,7 @@ static std::string format_datetime(
|
||||
to_string_dec_uint(datetime.second, 2, '0');
|
||||
}
|
||||
|
||||
static std::string format_navigational_status(const unsigned int value) {
|
||||
static std::string navigational_status(const unsigned int value) {
|
||||
switch(value) {
|
||||
case 0: return "under way w/engine";
|
||||
case 1: return "at anchor";
|
||||
@ -168,113 +75,8 @@ static std::string format_navigational_status(const unsigned int value) {
|
||||
}
|
||||
}
|
||||
|
||||
static constexpr char char_to_ascii(const uint8_t c) {
|
||||
return (c ^ 32) + 32;
|
||||
}
|
||||
|
||||
size_t Packet::length() const {
|
||||
return packet_.size();
|
||||
}
|
||||
|
||||
bool Packet::is_valid() const {
|
||||
return length_valid() && crc_ok();
|
||||
}
|
||||
|
||||
rtc::RTC Packet::received_at() const {
|
||||
return received_at_;
|
||||
}
|
||||
|
||||
uint32_t Packet::message_id() const {
|
||||
return field_.read(0, 6);
|
||||
}
|
||||
|
||||
MMSI Packet::user_id() const {
|
||||
return field_.read(8, 30);
|
||||
}
|
||||
|
||||
MMSI Packet::source_id() const {
|
||||
return field_.read(8, 30);
|
||||
}
|
||||
|
||||
uint32_t Packet::read(const size_t start_bit, const size_t length) const {
|
||||
return field_.read(start_bit, length);
|
||||
}
|
||||
|
||||
std::string Packet::text(
|
||||
const size_t start_bit,
|
||||
const size_t character_count
|
||||
) const {
|
||||
std::string result;
|
||||
result.reserve(character_count);
|
||||
|
||||
const size_t character_length = 6;
|
||||
const size_t end_bit = start_bit + character_count * character_length;
|
||||
for(size_t i=start_bit; i<end_bit; i+=character_length) {
|
||||
result += char_to_ascii(field_.read(i, character_length));
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
DateTime Packet::datetime(const size_t start_bit) const {
|
||||
return {
|
||||
static_cast<uint16_t>(field_.read(start_bit + 0, 14)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 14, 4)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 18, 5)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 23, 5)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 28, 6)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 34, 6)),
|
||||
};
|
||||
}
|
||||
|
||||
Latitude Packet::latitude(const size_t start_bit) const {
|
||||
// Shifting and dividing is to sign-extend the source field.
|
||||
// TODO: There's probably a more elegant way to do it.
|
||||
return static_cast<int32_t>(field_.read(start_bit, 27) << 5) / 32;
|
||||
}
|
||||
|
||||
Longitude Packet::longitude(const size_t start_bit) const {
|
||||
// Shifting and dividing is to sign-extend the source field.
|
||||
// TODO: There's probably a more elegant way to do it.
|
||||
return static_cast<int32_t>(field_.read(start_bit, 28) << 4) / 16;
|
||||
}
|
||||
|
||||
bool Packet::crc_ok() const {
|
||||
CRCFieldReader field_crc { packet_ };
|
||||
CRC<uint16_t> ais_fcs { 0x1021, 0xffff, 0xffff };
|
||||
|
||||
for(size_t i=0; i<data_length(); i+=8) {
|
||||
ais_fcs.process_byte(field_crc.read(i, 8));
|
||||
}
|
||||
|
||||
return (ais_fcs.checksum() == field_crc.read(data_length(), fcs_length));
|
||||
}
|
||||
|
||||
size_t Packet::data_and_fcs_length() const {
|
||||
// Subtract end flag (8 bits) - one unstuffing bit (occurs during end flag).
|
||||
return length() - 7;
|
||||
}
|
||||
|
||||
size_t Packet::data_length() const {
|
||||
return data_and_fcs_length() - fcs_length;
|
||||
}
|
||||
|
||||
bool Packet::length_valid() const {
|
||||
const size_t extra_bits = data_and_fcs_length() & 7;
|
||||
if( extra_bits != 0 ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const PacketLengthValidator packet_length_valid;
|
||||
if( !packet_length_valid(message_id(), data_length()) ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
} /* namespace format */
|
||||
} /* namespace ais */
|
||||
} /* namespace baseband */
|
||||
|
||||
AISModel::AISModel() {
|
||||
receiver_model.set_baseband_configuration({
|
||||
@ -416,7 +218,7 @@ void AISView::draw_entry(
|
||||
Painter& painter,
|
||||
const Style& s
|
||||
) {
|
||||
std::string line = baseband::ais::format_mmsi(entry.mmsi) + " ";
|
||||
std::string line = ais::format::mmsi(entry.mmsi) + " ";
|
||||
if( !entry.name.empty() ) {
|
||||
line += entry.name;
|
||||
} else {
|
||||
|
||||
@ -22,11 +22,10 @@
|
||||
#ifndef __AIS_APP_H__
|
||||
#define __AIS_APP_H__
|
||||
|
||||
#include "ui_console.hpp"
|
||||
#include "message.hpp"
|
||||
#include "ui_widget.hpp"
|
||||
#include "log_file.hpp"
|
||||
#include "field_reader.hpp"
|
||||
#include "baseband_packet.hpp"
|
||||
|
||||
#include "ais_packet.hpp"
|
||||
|
||||
#include "lpc43xx_cpp.hpp"
|
||||
using namespace lpc43xx;
|
||||
@ -34,79 +33,11 @@ using namespace lpc43xx;
|
||||
#include <cstdint>
|
||||
#include <cstddef>
|
||||
#include <string>
|
||||
#include <bitset>
|
||||
#include <list>
|
||||
#include <utility>
|
||||
|
||||
#include <iterator>
|
||||
|
||||
namespace baseband {
|
||||
namespace ais {
|
||||
|
||||
struct DateTime {
|
||||
uint16_t year;
|
||||
uint8_t month;
|
||||
uint8_t day;
|
||||
uint8_t hour;
|
||||
uint8_t minute;
|
||||
uint8_t second;
|
||||
};
|
||||
|
||||
using Latitude = int32_t;
|
||||
using Longitude = int32_t;
|
||||
|
||||
using MMSI = uint32_t;
|
||||
|
||||
class Packet {
|
||||
public:
|
||||
constexpr Packet(
|
||||
const rtc::RTC& received_at,
|
||||
const baseband::Packet& packet
|
||||
) : packet_ { packet },
|
||||
received_at_ { received_at },
|
||||
field_ { packet_ }
|
||||
{
|
||||
}
|
||||
|
||||
size_t length() const;
|
||||
|
||||
bool is_valid() const;
|
||||
|
||||
rtc::RTC received_at() const;
|
||||
|
||||
uint32_t message_id() const;
|
||||
MMSI user_id() const;
|
||||
MMSI source_id() const;
|
||||
|
||||
uint32_t read(const size_t start_bit, const size_t length) const;
|
||||
|
||||
std::string text(const size_t start_bit, const size_t character_count) const;
|
||||
|
||||
DateTime datetime(const size_t start_bit) const;
|
||||
|
||||
Latitude latitude(const size_t start_bit) const;
|
||||
Longitude longitude(const size_t start_bit) const;
|
||||
|
||||
bool crc_ok() const;
|
||||
|
||||
private:
|
||||
using Reader = FieldReader<baseband::Packet, BitRemapByteReverse>;
|
||||
|
||||
const baseband::Packet packet_;
|
||||
const rtc::RTC received_at_;
|
||||
const Reader field_;
|
||||
|
||||
const size_t fcs_length = 16;
|
||||
|
||||
size_t data_and_fcs_length() const;
|
||||
size_t data_length() const;
|
||||
|
||||
bool length_valid() const;
|
||||
};
|
||||
|
||||
} /* namespace ais */
|
||||
} /* namespace baseband */
|
||||
|
||||
class AISModel {
|
||||
public:
|
||||
AISModel();
|
||||
|
||||
228
firmware/application/ais_packet.cpp
Normal file
228
firmware/application/ais_packet.cpp
Normal file
@ -0,0 +1,228 @@
|
||||
/*
|
||||
* Copyright (C) 2014 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 "ais_packet.hpp"
|
||||
|
||||
#include "crc.hpp"
|
||||
|
||||
#include <cstdlib>
|
||||
|
||||
namespace baseband {
|
||||
namespace ais {
|
||||
|
||||
using CRCFieldReader = ::FieldReader<baseband::Packet, BitRemapNone>;
|
||||
|
||||
struct PacketLengthRange {
|
||||
constexpr PacketLengthRange(
|
||||
) : min_bytes { 0 },
|
||||
max_bytes { 0 }
|
||||
{
|
||||
}
|
||||
|
||||
constexpr PacketLengthRange(
|
||||
const uint16_t min_bits,
|
||||
const uint16_t max_bits
|
||||
) : min_bytes { static_cast<uint8_t>(min_bits / 8U) },
|
||||
max_bytes { static_cast<uint8_t>(max_bits / 8U) }
|
||||
{
|
||||
// static_assert((min_bits & 7) == 0, "minimum bits not a multiple of 8");
|
||||
// static_assert((max_bits & 7) == 0, "minimum bits not a multiple of 8");
|
||||
}
|
||||
|
||||
constexpr bool contains(const size_t bit_count) const {
|
||||
return !is_above(bit_count) && !is_below(bit_count);
|
||||
}
|
||||
|
||||
constexpr bool is_above(const size_t bit_count) const {
|
||||
return (min() > bit_count);
|
||||
}
|
||||
|
||||
constexpr bool is_below(const size_t bit_count) const {
|
||||
return (max() < bit_count);
|
||||
}
|
||||
|
||||
constexpr size_t min() const {
|
||||
return min_bytes * 8;
|
||||
}
|
||||
|
||||
constexpr size_t max() const {
|
||||
return max_bytes * 8;
|
||||
}
|
||||
|
||||
private:
|
||||
const uint8_t min_bytes;
|
||||
const uint8_t max_bytes;
|
||||
};
|
||||
|
||||
static constexpr std::array<PacketLengthRange, 64> packet_length_range { {
|
||||
{ 0, 0 }, // 0
|
||||
{ 168, 168 }, // 1
|
||||
{ 168, 168 }, // 2
|
||||
{ 168, 168 }, // 3
|
||||
{ 168, 168 }, // 4
|
||||
{ 424, 424 }, // 5
|
||||
{ 0, 0 }, // 6
|
||||
{ 0, 0 }, // 7
|
||||
{ 0, 1008 }, // 8
|
||||
{ 0, 0 }, // 9
|
||||
{ 0, 0 }, // 10
|
||||
{ 0, 0 }, // 11
|
||||
{ 0, 0 }, // 12
|
||||
{ 0, 0 }, // 13
|
||||
{ 0, 0 }, // 14
|
||||
{ 0, 0 }, // 15
|
||||
{ 0, 0 }, // 16
|
||||
{ 0, 0 }, // 17
|
||||
{ 168, 168 }, // 18
|
||||
{ 0, 0 }, // 19
|
||||
{ 72, 160 }, // 20
|
||||
{ 272, 360 }, // 21
|
||||
{ 168, 168 }, // 22
|
||||
{ 160, 160 }, // 23
|
||||
{ 160, 168 }, // 24
|
||||
{ 0, 168 }, // 25
|
||||
{ 0, 0 }, // 26
|
||||
{ 0, 0 }, // 27
|
||||
{ 0, 0 }, // 28
|
||||
{ 0, 0 }, // 29
|
||||
{ 0, 0 }, // 30
|
||||
{ 0, 0 }, // 31
|
||||
} };
|
||||
|
||||
struct PacketLengthValidator {
|
||||
constexpr bool operator()(const uint_fast8_t message_id, const size_t length) const {
|
||||
return packet_length_range[message_id].contains(length);
|
||||
}
|
||||
};
|
||||
|
||||
struct PacketTooLong {
|
||||
constexpr bool operator()(const uint_fast8_t message_id, const size_t length) const {
|
||||
return packet_length_range[message_id].is_below(length);
|
||||
}
|
||||
};
|
||||
|
||||
static constexpr char char_to_ascii(const uint8_t c) {
|
||||
return (c ^ 32) + 32;
|
||||
}
|
||||
|
||||
size_t Packet::length() const {
|
||||
return packet_.size();
|
||||
}
|
||||
|
||||
bool Packet::is_valid() const {
|
||||
return length_valid() && crc_ok();
|
||||
}
|
||||
|
||||
rtc::RTC Packet::received_at() const {
|
||||
return received_at_;
|
||||
}
|
||||
|
||||
uint32_t Packet::message_id() const {
|
||||
return field_.read(0, 6);
|
||||
}
|
||||
|
||||
MMSI Packet::user_id() const {
|
||||
return field_.read(8, 30);
|
||||
}
|
||||
|
||||
MMSI Packet::source_id() const {
|
||||
return field_.read(8, 30);
|
||||
}
|
||||
|
||||
uint32_t Packet::read(const size_t start_bit, const size_t length) const {
|
||||
return field_.read(start_bit, length);
|
||||
}
|
||||
|
||||
std::string Packet::text(
|
||||
const size_t start_bit,
|
||||
const size_t character_count
|
||||
) const {
|
||||
std::string result;
|
||||
result.reserve(character_count);
|
||||
|
||||
const size_t character_length = 6;
|
||||
const size_t end_bit = start_bit + character_count * character_length;
|
||||
for(size_t i=start_bit; i<end_bit; i+=character_length) {
|
||||
result += char_to_ascii(field_.read(i, character_length));
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
DateTime Packet::datetime(const size_t start_bit) const {
|
||||
return {
|
||||
static_cast<uint16_t>(field_.read(start_bit + 0, 14)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 14, 4)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 18, 5)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 23, 5)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 28, 6)),
|
||||
static_cast<uint8_t >(field_.read(start_bit + 34, 6)),
|
||||
};
|
||||
}
|
||||
|
||||
Latitude Packet::latitude(const size_t start_bit) const {
|
||||
// Shifting and dividing is to sign-extend the source field.
|
||||
// TODO: There's probably a more elegant way to do it.
|
||||
return static_cast<int32_t>(field_.read(start_bit, 27) << 5) / 32;
|
||||
}
|
||||
|
||||
Longitude Packet::longitude(const size_t start_bit) const {
|
||||
// Shifting and dividing is to sign-extend the source field.
|
||||
// TODO: There's probably a more elegant way to do it.
|
||||
return static_cast<int32_t>(field_.read(start_bit, 28) << 4) / 16;
|
||||
}
|
||||
|
||||
bool Packet::crc_ok() const {
|
||||
CRCFieldReader field_crc { packet_ };
|
||||
CRC<uint16_t> ais_fcs { 0x1021, 0xffff, 0xffff };
|
||||
|
||||
for(size_t i=0; i<data_length(); i+=8) {
|
||||
ais_fcs.process_byte(field_crc.read(i, 8));
|
||||
}
|
||||
|
||||
return (ais_fcs.checksum() == field_crc.read(data_length(), fcs_length));
|
||||
}
|
||||
|
||||
size_t Packet::data_and_fcs_length() const {
|
||||
// Subtract end flag (8 bits) - one unstuffing bit (occurs during end flag).
|
||||
return length() - 7;
|
||||
}
|
||||
|
||||
size_t Packet::data_length() const {
|
||||
return data_and_fcs_length() - fcs_length;
|
||||
}
|
||||
|
||||
bool Packet::length_valid() const {
|
||||
const size_t extra_bits = data_and_fcs_length() & 7;
|
||||
if( extra_bits != 0 ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const PacketLengthValidator packet_length_valid;
|
||||
if( !packet_length_valid(message_id(), data_length()) ) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
} /* namespace ais */
|
||||
} /* namespace baseband */
|
||||
102
firmware/application/ais_packet.hpp
Normal file
102
firmware/application/ais_packet.hpp
Normal file
@ -0,0 +1,102 @@
|
||||
/*
|
||||
* Copyright (C) 2014 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.
|
||||
*/
|
||||
|
||||
#ifndef __AIS_PACKET_H__
|
||||
#define __AIS_PACKET_H__
|
||||
|
||||
#include "baseband_packet.hpp"
|
||||
#include "field_reader.hpp"
|
||||
|
||||
#include "lpc43xx_cpp.hpp"
|
||||
using namespace lpc43xx;
|
||||
|
||||
#include <cstdint>
|
||||
#include <cstddef>
|
||||
#include <string>
|
||||
|
||||
namespace baseband {
|
||||
namespace ais {
|
||||
|
||||
struct DateTime {
|
||||
uint16_t year;
|
||||
uint8_t month;
|
||||
uint8_t day;
|
||||
uint8_t hour;
|
||||
uint8_t minute;
|
||||
uint8_t second;
|
||||
};
|
||||
|
||||
using Latitude = int32_t;
|
||||
using Longitude = int32_t;
|
||||
|
||||
using MMSI = uint32_t;
|
||||
|
||||
class Packet {
|
||||
public:
|
||||
constexpr Packet(
|
||||
const rtc::RTC& received_at,
|
||||
const baseband::Packet& packet
|
||||
) : packet_ { packet },
|
||||
received_at_ { received_at },
|
||||
field_ { packet_ }
|
||||
{
|
||||
}
|
||||
|
||||
size_t length() const;
|
||||
|
||||
bool is_valid() const;
|
||||
|
||||
rtc::RTC received_at() const;
|
||||
|
||||
uint32_t message_id() const;
|
||||
MMSI user_id() const;
|
||||
MMSI source_id() const;
|
||||
|
||||
uint32_t read(const size_t start_bit, const size_t length) const;
|
||||
|
||||
std::string text(const size_t start_bit, const size_t character_count) const;
|
||||
|
||||
DateTime datetime(const size_t start_bit) const;
|
||||
|
||||
Latitude latitude(const size_t start_bit) const;
|
||||
Longitude longitude(const size_t start_bit) const;
|
||||
|
||||
bool crc_ok() const;
|
||||
|
||||
private:
|
||||
using Reader = FieldReader<baseband::Packet, BitRemapByteReverse>;
|
||||
|
||||
const baseband::Packet packet_;
|
||||
const rtc::RTC received_at_;
|
||||
const Reader field_;
|
||||
|
||||
const size_t fcs_length = 16;
|
||||
|
||||
size_t data_and_fcs_length() const;
|
||||
size_t data_length() const;
|
||||
|
||||
bool length_valid() const;
|
||||
};
|
||||
|
||||
} /* namespace ais */
|
||||
} /* namespace baseband */
|
||||
|
||||
#endif/*__AIS_PACKET_H__*/
|
||||
Loading…
Reference in New Issue
Block a user