Started work on ACARS RX

Added ACARS frequencies file
Moved non-implemented apps menu items down

firmware/baseband/proc_acars.hpp

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2018 Furrtek
+ *
+ * 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 __PROC_ACARS_H__
+#define __PROC_ACARS_H__
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+
+#include "dsp_decimate.hpp"
+#include "dsp_demodulate.hpp"
+//#include "audio_compressor.hpp"
+
+#include "spectrum_collector.hpp"
+
+#include <cstdint>
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+
+#include "channel_decimator.hpp"
+#include "matched_filter.hpp"
+
+#include "clock_recovery.hpp"
+#include "symbol_coding.hpp"
+#include "packet_builder.hpp"
+#include "baseband_packet.hpp"
+
+#include "message.hpp"
+
+#include <cstdint>
+#include <cstddef>
+#include <bitset>
+
+#include "ais_baseband.hpp"
+
+class ACARSProcessor : public BasebandProcessor {
+public:
+	ACARSProcessor();
+
+	void execute(const buffer_c8_t& buffer) override;
+
+private:
+	static constexpr size_t baseband_fs = 2457600;
+
+	BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
+	RSSIThread rssi_thread { NORMALPRIO + 10 };
+
+	std::array<complex16_t, 512> dst { };
+	const buffer_c16_t dst_buffer {
+		dst.data(),
+		dst.size()
+	};
+
+	dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
+	dsp::decimate::FIRC16xR16x32Decim8 decim_1 { };
+	dsp::matched_filter::MatchedFilter mf { baseband::ais::square_taps_38k4_1t_p, 2 };
+
+	clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery {
+		19200, 2400, { 0.0555f },
+		[this](const float symbol) { this->consume_symbol(symbol); }
+	};
+	symbol_coding::NRZIDecoder nrzi_decode { };
+	PacketBuilder<BitPattern, NeverMatch, BitPattern> packet_builder {
+		{ 0b1001011010010110, 16, 1 },	// SYN, SYN
+		{ },
+		{ 0b11111111, 8, 1 },
+		[this](const baseband::Packet& packet) {
+			this->payload_handler(packet);
+		}
+	};
+
+	void consume_symbol(const float symbol);
+	void payload_handler(const baseband::Packet& packet);
+};
+
+#endif/*__PROC_ACARS_H__*/