Move ERT, AIS packet code to common/.

2026-09-11 00:59:28 +00:00 · 2015-12-08 16:08:20 -08:00
parent 2e81d1f5b7
commit 7de187e267
5 changed files with 2 additions and 2 deletions
@@ -0,0 +1,101 @@
+/*
+ * 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 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>;
+	using CRCReader = FieldReader<baseband::Packet, BitRemapNone>;
+	
+	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 */
+
+#endif/*__AIS_PACKET_H__*/