Started working on radiosonde RX

Removed some warnings
Better handling of absent map file in GeoMap ?

firmware/application/CMakeLists.txt

@@ -203,6 +203,7 @@ set(CPPSRC
 	# ui_sd_card_debug.cpp
 	ui_setup.cpp
 	ui_siggen.cpp
+	ui_sonde.cpp
 	ui_soundboard.cpp
 	ui_spectrum.cpp
 	ui_sstvtx.cpp
@@ -225,6 +226,7 @@ set(CPPSRC
 	${COMMON}/morse.cpp
 	${COMMON}/adsb_frame.cpp
 	${COMMON}/adsb.cpp
+	${COMMON}/sonde_packet.cpp
 	ais_app.cpp
 	tpms_app.cpp
 	pocsag_app.cpp

firmware/application/bitmap.hpp

@@ -705,6 +705,28 @@ static constexpr Bitmap bitmap_icon_notepad {
 	{ 16, 16 }, bitmap_icon_notepad_data
 };
 
+static constexpr uint8_t bitmap_icon_sonde_data[] = {
+	0xE0, 0x03, 
+	0x90, 0x07, 
+	0xE8, 0x0F, 
+	0xF8, 0x0F, 
+	0xF8, 0x0F, 
+	0xF0, 0x07, 
+	0xF0, 0x07, 
+	0xE0, 0x03, 
+	0xE0, 0x03, 
+	0xC0, 0x01, 
+	0xC0, 0x01, 
+	0x80, 0x00, 
+	0x80, 0x00, 
+	0x80, 0x02, 
+	0xC0, 0x01, 
+	0xC0, 0x01, 
+};
+static constexpr Bitmap bitmap_icon_sonde {
+	{ 16, 16 }, bitmap_icon_sonde_data
+};
+
 static constexpr uint8_t bitmap_icon_setup_data[] = {
 	0x00, 0x00, 
 	0x18, 0x18, 

firmware/application/ui_about.hpp

@@ -72,7 +72,7 @@ private:
 		int32_t delay;
 	} credits_t;
 	
-	const credits_t credits[20] = {	
+	const credits_t credits[22] = {	
 		{ 60,		"PortaPack|HAVOC",				0 },
 		{ 7 * 8,	"Git hash " GIT_REVISION,		16 },
 		{ 11 * 8,	"Gurus  J. Boone",				0 },
@@ -80,6 +80,8 @@ private:
 		{ 11 * 8,	"HAVOC  Furrtek",				16 },
 		{ 7 * 8,	"POCSAG rx  T. Sailer",			0 },
 		{ 18 * 8,	"E. Oenal",						16 },
+		{ 0 * 8,	"Radiosonde infos  F4GMU",		0 },
+		{ 18 * 8,	"RS1729",						16 },
 		{ 4 * 8,	"RDS waveform  C. Jacquet", 	16 },
 		{ 7 * 8,	"Xy. infos  cLx", 				16 },
 		{ 2 * 8,	"OOK scan trick  Samy Kamkar",	16 },

firmware/application/ui_debug.cpp

@@ -261,7 +261,7 @@ DebugPeripheralsMenuView::DebugPeripheralsMenuView(NavigationView& nav) {
 			[](const size_t register_number) { return portapack::clock_generator.read_register(register_number); }
 		); } },
 		{ audio::debug::codec_name(), ui::Color::white(),	nullptr,	[&nav](){ nav.push<RegistersView>(
-			audio::debug::codec_name(), RegistersWidgetConfig { (int)audio::debug::reg_count(), (int)audio::debug::reg_bits() },
+			audio::debug::codec_name(), RegistersWidgetConfig { (size_t)audio::debug::reg_count(), (size_t)audio::debug::reg_bits() },
 			[](const size_t register_number) { return audio::debug::reg_read(register_number); }
 		); } },
 	});

firmware/application/ui_encoders.cpp

@@ -30,7 +30,7 @@ using namespace portapack;
 namespace ui {
 
 EncodersConfigView::EncodersConfigView(
-	NavigationView& nav, Rect parent_rect
+	NavigationView&, Rect parent_rect
 ) {
 	using option_t = std::pair<std::string, int32_t>;
 	std::vector<option_t> enc_options;
@@ -171,7 +171,7 @@ void EncodersScanView::focus() {
 }
 
 EncodersScanView::EncodersScanView(
-	NavigationView& nav, Rect parent_rect
+	NavigationView&, Rect parent_rect
 ) {
 	set_parent_rect(parent_rect);
 	hidden(true);

firmware/application/ui_geomap.cpp

@@ -173,9 +173,8 @@ void GeoMap::move(const float lon, const float lat) {
 
 bool GeoMap::init() {
 	auto result = map_file.open("ADSB/world_map.bin");
-	if (result.is_valid()) {
+	if (result.is_valid())
 		return false;
-	}
 	
 	map_file.read(&map_width, 2);
 	map_file.read(&map_height, 2);
@@ -210,9 +209,9 @@ void GeoMap::draw_bearing(const Point origin, const uint32_t angle, uint32_t siz
 }
 
 void GeoMapView::focus() {
-	if (!file_error) {
+	geopos.focus();
-		geopos.focus();
+	
-	} else
+	if (!file_error)
 		nav_.display_modal("No map", "No world_map.bin file in\n/ADSB/ directory", ABORT, nullptr);
 }
 
@@ -226,10 +225,7 @@ void GeoMapView::update_position(float lat, float lon) {
 }
 	
 void GeoMapView::setup() {
-	add_children({
+	add_child(&geomap);
-		&geopos,
-		&geomap
-	});
 	
 	geopos.set_altitude(altitude_);
 	geopos.set_lat(lat_);
@@ -282,6 +278,8 @@ GeoMapView::GeoMapView(
 {
 	mode_ = DISPLAY;
 	
+	add_child(&geopos);
+	
 	file_error = !geomap.init();
 	if (file_error) return;
 	
@@ -308,6 +306,8 @@ GeoMapView::GeoMapView(
 {
 	mode_ = PROMPT;
 	
+	add_child(&geopos);
+	
 	file_error = !geomap.init();
 	if (file_error) return;
 	

firmware/application/ui_navigation.cpp

@@ -50,6 +50,7 @@
 #include "ui_nuoptix.hpp"
 #include "ui_playdead.hpp"
 #include "ui_pocsag_tx.hpp"
+#include "ui_sonde.hpp"
 #include "ui_rds.hpp"
 #include "ui_sd_wipe.hpp"
 #include "ui_scanner.hpp"
@@ -294,6 +295,7 @@ ReceiversMenuView::ReceiversMenuView(NavigationView& nav) {
 		{ "POCSAG", 				ui::Color::green(),	&bitmap_icon_pocsag,	[&nav](){ nav.push<POCSAGAppView>(); } },
 		{ "SIGFOX", 				ui::Color::grey(),	&bitmap_icon_fox,	[&nav](){ nav.push<NotImplementedView>(); } }, // SIGFRXView
 		{ "LoRa", 					ui::Color::grey(),	nullptr,			[&nav](){ nav.push<NotImplementedView>(); } },
+		{ "Radiosondes", 			ui::Color::red(),	&bitmap_icon_sonde,	[&nav](){ nav.push<SondeView>(); } },
 		{ "SSTV", 					ui::Color::grey(), 	&bitmap_icon_sstv,	[&nav](){ nav.push<NotImplementedView>(); } },
 		{ "TPMS:  Cars", 			ui::Color::green(),	&bitmap_icon_tpms,	[&nav](){ nav.push<TPMSAppView>(); } },
 	});

firmware/application/ui_sonde.cpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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.
+ */
+
+#include "ui_sonde.hpp"
+
+#include "baseband_api.hpp"
+
+#include "portapack.hpp"
+using namespace portapack;
+
+//#include "manchester.hpp"
+
+#include "string_format.hpp"
+
+/*void SondeLogger::on_packet(const sonde::Packet& packet) {
+	const auto formatted = packet.symbols_formatted();
+	log_file.write_entry(packet.received_at(), formatted.data + "/" + formatted.errors);
+}*/
+
+namespace ui {
+
+SondeView::SondeView(NavigationView& nav) {
+	baseband::run_image(portapack::spi_flash::image_tag_sonde);
+
+	add_children({
+		&field_frequency,
+		&text_debug,
+		&field_rf_amp,
+		&field_lna,
+		&field_vga,
+		&rssi
+	});
+
+	field_frequency.set_value(receiver_model.tuning_frequency());
+	field_frequency.set_step(receiver_model.frequency_step());
+	field_frequency.on_change = [this](rf::Frequency f) {
+		receiver_model.set_tuning_frequency(f);
+		field_frequency.set_value(f);
+	};
+	field_frequency.on_edit = [this, &nav]() {
+		// TODO: Provide separate modal method/scheme?
+		auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
+		new_view->on_changed = [this](rf::Frequency f) {
+			receiver_model.set_tuning_frequency(f);
+			field_frequency.set_value(f);
+		};
+	};
+	
+	radio::enable({
+		receiver_model.tuning_frequency(),
+		sampling_rate,
+		baseband_bandwidth,
+		rf::Direction::Receive,
+		receiver_model.rf_amp(),
+		static_cast<int8_t>(receiver_model.lna()),
+		static_cast<int8_t>(receiver_model.vga()),
+	});
+
+	/*logger = std::make_unique<SondeLogger>();
+	if( logger ) {
+		logger->append(u"sonde.txt");
+	}*/
+}
+
+SondeView::~SondeView() {
+	radio::disable();
+	baseband::shutdown();
+}
+
+void SondeView::focus() {
+	field_vga.focus();
+}
+
+void SondeView::on_packet(const sonde::Packet& packet) {
+	text_debug.set("Got frame !");
+	/*if( logger ) {
+		logger->on_packet(packet);
+	}*/
+
+	/*if( packet.crc_ok() ) {
+	}*/
+}
+
+} /* namespace ui */

firmware/application/ui_sonde.hpp

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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 __UI_SONDE_H__
+#define __UI_SONDE_H__
+
+#include "ui_navigation.hpp"
+#include "ui_receiver.hpp"
+#include "ui_rssi.hpp"
+#include "ui_channel.hpp"
+
+#include "event_m0.hpp"
+
+#include "log_file.hpp"
+
+#include "sonde_packet.hpp"
+
+#include "recent_entries.hpp"
+
+#include <cstddef>
+#include <string>
+
+/*class SondeLogger {
+public:
+	Optional<File::Error> append(const std::filesystem::path& filename) {
+		return log_file.append(filename);
+	}
+	
+	void on_packet(const sonde::Packet& packet);
+
+private:
+	LogFile log_file { };
+};*/
+
+namespace ui {
+
+class SondeView : public View {
+public:
+	static constexpr uint32_t sampling_rate = 2457600;
+	static constexpr uint32_t baseband_bandwidth = 1750000;
+
+	SondeView(NavigationView& nav);
+	~SondeView();
+
+	void focus() override;
+
+	std::string title() const override { return "Radiosonde RX"; };
+
+private:
+	//std::unique_ptr<SondeLogger> logger { };
+
+	FrequencyField field_frequency {
+		{ 0 * 8, 0 * 8 },
+	};
+	RFAmpField field_rf_amp {
+		{ 13 * 8, 0 * 16 }
+	};
+
+	LNAGainField field_lna {
+		{ 15 * 8, 0 * 16 }
+	};
+
+	VGAGainField field_vga {
+		{ 18 * 8, 0 * 16 }
+	};
+
+	RSSI rssi {
+		{ 21 * 8, 0, 6 * 8, 4 },
+	};
+	
+	Text text_debug {
+		{ 0, 32, 240, 16 },
+		"Waiting for frame..."
+	};
+
+	MessageHandlerRegistration message_handler_packet {
+		Message::ID::SondePacket,
+		[this](Message* const p) {
+			const auto message = static_cast<const SondePacketMessage*>(p);
+			const sonde::Packet packet { message->type, message->packet };
+			this->on_packet(packet);
+		}
+	};
+
+	void on_packet(const sonde::Packet& packet);
+};
+
+} /* namespace ui */
+
+#endif/*__UI_SONDE_H__*/

firmware/baseband/CMakeLists.txt

@@ -338,6 +338,13 @@ set(MODE_CPPSRC
 )
 DeclareTargets(PERT ert)
 
+### Radiosonde
+
+set(MODE_CPPSRC
+	proc_sonde.cpp
+)
+DeclareTargets(PSON sonde)
+
 ### FSK TX
 
 set(MODE_CPPSRC

firmware/baseband/proc_sonde.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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.
+ */
+
+#include "proc_sonde.hpp"
+
+#include "dsp_fir_taps.hpp"
+//#include "portapack_shared_memory.hpp"
+
+#include "event_m4.hpp"
+
+SondeProcessor::SondeProcessor() {
+	decim_0.configure(taps_200k_decim_0.taps, 33554432);
+	decim_1.configure(taps_200k_decim_1.taps, 131072);
+}
+
+void SondeProcessor::execute(const buffer_c8_t& buffer) {
+	/* 2.4576MHz, 2048 samples */
+
+	const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
+	const auto decimator_out = decim_1.execute(decim_0_out, dst_buffer);
+
+	/* 307.2kHz, 256 samples */
+	feed_channel_stats(decimator_out);
+
+	for(size_t i=0; i<decimator_out.count; i++) {
+		if( mf_38k4_1t_19k2.execute_once(decimator_out.p[i]) ) {
+			clock_recovery_fsk_19k2(mf_38k4_1t_19k2.get_output());
+		}
+	}
+}
+
+int main() {
+	EventDispatcher event_dispatcher { std::make_unique<SondeProcessor>() };
+	event_dispatcher.run();
+	return 0;
+}

firmware/baseband/proc_sonde.hpp

@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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_SONDE_H__
+#define __PROC_SONDE_H__
+
+#include "baseband_processor.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+#include "proc_tpms.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 "ook.hpp"
+
+#include "message.hpp"
+#include "portapack_shared_memory.hpp"
+
+#include <cstdint>
+#include <cstddef>
+#include <bitset>
+
+class SondeProcessor : public BasebandProcessor {
+public:
+	SondeProcessor();
+	
+	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::FIRC8xR16x24FS4Decim4 decim_0 { };
+	dsp::decimate::FIRC16xR16x16Decim2 decim_1 { };
+
+	dsp::matched_filter::MatchedFilter mf_38k4_1t_19k2 { rect_taps_307k2_38k4_1t_19k2_p, 8 };
+
+	clock_recovery::ClockRecovery<clock_recovery::FixedErrorFilter> clock_recovery_fsk_19k2 {
+		38400, 19200, { 0.0555f },
+		[this](const float raw_symbol) {
+			const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
+			this->packet_builder_fsk_4800_M10.execute(sliced_symbol);
+		}
+	};
+	PacketBuilder<BitPattern, NeverMatch, FixedLength> packet_builder_fsk_4800_M10 {
+		{ 0b11001100110011001010011001001100, 32, 1 },
+		{ },
+		{ 102 * 8 },
+		[this](const baseband::Packet& packet) {
+			const SondePacketMessage message { sonde::Packet::Type::M10, packet };
+			shared_memory.application_queue.push(message);
+		}
+	};
+};
+
+#endif/*__PROC_ERT_H__*/

firmware/common/message.hpp

@@ -35,6 +35,7 @@
 #include "ert_packet.hpp"
 #include "tpms_packet.hpp"
 #include "pocsag_packet.hpp"
+#include "sonde_packet.hpp"
 #include "adsb_frame.hpp"
 #include "jammer.hpp"
 #include "dsp_fir_taps.hpp"
@@ -60,18 +61,19 @@ public:
 		Shutdown = 8,
 		AISPacket = 7,
 		ERTPacket = 9,
-		UpdateSpectrum = 10,
+		SondePacket = 10,
-		NBFMConfigure = 11,
+		UpdateSpectrum = 11,
-		WFMConfigure = 12,
+		NBFMConfigure = 12,
-		AMConfigure = 13,
+		WFMConfigure = 13,
-		ChannelSpectrumConfig = 14,
+		AMConfigure = 14,
-		SpectrumStreamingConfig = 15,
+		ChannelSpectrumConfig = 15,
-		DisplaySleep = 16,
+		SpectrumStreamingConfig = 16,
-		CaptureConfig = 17,
+		DisplaySleep = 17,
-		CaptureThreadDone = 18,
+		CaptureConfig = 18,
-		ReplayConfig = 19,
+		CaptureThreadDone = 19,
-		ReplayThreadDone = 20,
+		ReplayConfig = 20,
-		AFSKRxConfigure = 21,
+		ReplayThreadDone = 21,
+		AFSKRxConfigure = 22,
 
 		TXProgress = 30,
 		Retune = 31,
@@ -372,6 +374,22 @@ public:
 	baseband::Packet packet;
 };
 
+class SondePacketMessage : public Message {
+public:
+	constexpr SondePacketMessage(
+		const sonde::Packet::Type type,
+		const baseband::Packet& packet
+	) : Message { ID::SondePacket },
+		type { type },
+		packet { packet }
+	{
+	}
+
+	sonde::Packet::Type type;
+
+	baseband::Packet packet;
+};
+
 class UpdateSpectrumMessage : public Message {
 public:
 	constexpr UpdateSpectrumMessage(

firmware/common/sonde_packet.cpp

@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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.
+ */
+
+#include "sonde_packet.hpp"
+
+//#include "crc.hpp"
+
+namespace sonde {
+
+size_t Packet::length() const {
+	return decoder_.symbols_count();
+}
+
+bool Packet::is_valid() const {
+	return true;
+}
+
+Timestamp Packet::received_at() const {
+	return packet_.timestamp();
+}
+
+Packet::Type Packet::type() const {
+	return type_;
+}
+
+SN Packet::serial_number() const {
+	if (type() == Type::M10) {
+		// See https://github.com/rs1729/RS/blob/master/m10/m10x.c line 606
+		return (reader_.read(2 * 8, 8) << 20) |
+			(reader_.read(0, 4) << 16) |
+			(reader_.read(4 * 8, 3) << 13) |
+			(reader_.read(4 * 8 + 3, 5) << 8) |
+			reader_.read(3 * 8, 8);
+	}
+	return 0;
+}
+
+FormattedSymbols Packet::symbols_formatted() const {
+	return format_symbols(decoder_);
+}
+
+bool Packet::crc_ok() const {
+	switch(type()) {
+	case Type::M10:	return crc_ok_M10();
+	default:		return false;
+	}
+}
+
+bool Packet::crc_ok_M10() const {
+    uint16_t cs { 0 };
+	uint32_t c0, c1, t, t6, t7, s,b ;
+    
+	for (size_t i = 0; i < packet_.size(); i++) {
+		b = packet_[i];
+		c1 = cs & 0xFF;
+
+		// B
+		b = (b >> 1) | ((b & 1) << 7);
+		b ^= (b >> 2) & 0xFF;
+
+		// A1
+		t6 = (cs & 1) ^ ((cs >> 2) & 1) ^ ((cs >> 4) & 1);
+		t7 = ((cs >> 1) & 1) ^ ((cs >> 3) & 1) ^ ((cs >> 5) & 1);
+		t = (cs & 0x3F) | (t6 << 6) | (t7 << 7);
+
+		// A2
+		s = (cs >> 7) & 0xFF;
+		s ^= (s >> 2) & 0xFF;
+
+		c0 = b ^ t ^ s;
+
+		cs = ((c1<<8) | c0) & 0xFFFF;
+    }
+
+	return ((cs & 0xFFFF) == ((packet_[0x63] << 8) | (packet_[0x63 + 1])));
+}
+
+} /* namespace sonde */

firmware/common/sonde_packet.hpp

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2017 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 __SONDE_PACKET_H__
+#define __SONDE_PACKET_H__
+
+#include <cstdint>
+#include <cstddef>
+
+#include "field_reader.hpp"
+#include "baseband_packet.hpp"
+#include "manchester.hpp"
+
+namespace sonde {
+
+using SN = uint64_t;
+
+class Packet {
+public:
+	enum class Type : uint32_t {
+		Unknown = 0,
+		M10 = 1,
+	};
+
+	Packet(
+		const Type type,
+		const baseband::Packet& packet
+	) : packet_ { packet },
+		decoder_ { packet_ },
+		reader_ { decoder_ },
+		type_ { type }
+	{
+	}
+
+	size_t length() const;
+	
+	bool is_valid() const;
+
+	Timestamp received_at() const;
+
+	Type type() const;
+	SN serial_number() const;
+
+	FormattedSymbols symbols_formatted() const;
+
+	bool crc_ok() const;
+
+private:
+	using Reader = FieldReader<ManchesterDecoder, BitRemapNone>;
+
+	const baseband::Packet packet_;
+	const ManchesterDecoder decoder_;
+	const Reader reader_;
+	const Type type_;
+
+	bool crc_ok_M10() const;
+};
+
+} /* namespace sonde */
+
+#endif/*__SONDE_PACKET_H__*/

firmware/common/spi_image.hpp

@@ -70,23 +70,24 @@ constexpr image_tag_t image_tag_am_audio			{ 'P', 'A', 'M', 'A' };
 constexpr image_tag_t image_tag_capture				{ 'P', 'C', 'A', 'P' };
 constexpr image_tag_t image_tag_ert					{ 'P', 'E', 'R', 'T' };
 constexpr image_tag_t image_tag_nfm_audio			{ 'P', 'N', 'F', 'M' };
-constexpr image_tag_t image_tag_tpms				{ 'P', 'T', 'P', 'M' };
 constexpr image_tag_t image_tag_pocsag				{ 'P', 'P', 'O', 'C' };
+constexpr image_tag_t image_tag_sonde				{ 'P', 'S', 'O', 'N' };
+constexpr image_tag_t image_tag_tpms				{ 'P', 'T', 'P', 'M' };
 constexpr image_tag_t image_tag_wfm_audio			{ 'P', 'W', 'F', 'M' };
 constexpr image_tag_t image_tag_wideband_spectrum	{ 'P', 'S', 'P', 'E' };
 
-constexpr image_tag_t image_tag_jammer				{ 'P', 'J', 'A', 'M' };
-constexpr image_tag_t image_tag_audio_tx			{ 'P', 'A', 'T', 'X' };
-constexpr image_tag_t image_tag_afsk				{ 'P', 'A', 'F', 'T' };
-constexpr image_tag_t image_tag_tones				{ 'P', 'T', 'O', 'N' };
-constexpr image_tag_t image_tag_rds					{ 'P', 'R', 'D', 'S' };
-constexpr image_tag_t image_tag_ook					{ 'P', 'O', 'O', 'K' };
 constexpr image_tag_t image_tag_adsb_tx				{ 'P', 'A', 'D', 'T' };
-constexpr image_tag_t image_tag_replay				{ 'P', 'R', 'E', 'P' };
+constexpr image_tag_t image_tag_afsk				{ 'P', 'A', 'F', 'T' };
+constexpr image_tag_t image_tag_audio_tx			{ 'P', 'A', 'T', 'X' };
 constexpr image_tag_t image_tag_fsktx				{ 'P', 'F', 'S', 'K' };
+constexpr image_tag_t image_tag_jammer				{ 'P', 'J', 'A', 'M' };
 constexpr image_tag_t image_tag_mic_tx				{ 'P', 'M', 'T', 'X' };
-constexpr image_tag_t image_tag_sstv_tx				{ 'P', 'S', 'T', 'X' };
+constexpr image_tag_t image_tag_ook					{ 'P', 'O', 'O', 'K' };
+constexpr image_tag_t image_tag_rds					{ 'P', 'R', 'D', 'S' };
+constexpr image_tag_t image_tag_replay				{ 'P', 'R', 'E', 'P' };
 constexpr image_tag_t image_tag_siggen				{ 'P', 'S', 'I', 'G' };
+constexpr image_tag_t image_tag_sstv_tx				{ 'P', 'S', 'T', 'X' };
+constexpr image_tag_t image_tag_tones				{ 'P', 'T', 'O', 'N' };
 
 constexpr image_tag_t image_tag_noop				{ 'P', 'N', 'O', 'P' };