Merge fixing, commit to catch up on recent files

firmware/application/Makefile

@@ -148,6 +148,8 @@ CPPSRC = main.cpp \
          encoder.cpp \
          lcd_ili9341.cpp \
          ui.cpp \
+         ui_alphanum.cpp \
+         ui_about.cpp \
          ui_text.cpp \
          ui_widget.cpp \
          ui_painter.cpp \
@@ -157,6 +159,9 @@ CPPSRC = main.cpp \
          ui_rssi.cpp \
          ui_channel.cpp \
          ui_audio.cpp \
+         ui_lcr.cpp \
+         ui_rds.cpp \
+         ui_jammer.cpp \
          ui_font_fixed_8x16.cpp \
          ui_setup.cpp \
          ui_debug.cpp \

firmware/application/file.hpp

@@ -19,36 +19,34 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#include "irq_ipc.hpp"
+#ifndef __FILE_H__
+#define __FILE_H__
 
-#include "event.hpp"
+#include "ff.h"
 
-#include "ch.h"
-#include "hal.h"
+#include <cstddef>
+#include <string>
 
-#include "lpc43xx_cpp.hpp"
-using namespace lpc43xx;
+class File {
+public:
+	~File();
 
-void m4txevent_interrupt_enable() {
-	nvicEnableVector(M4CORE_IRQn, CORTEX_PRIORITY_MASK(LPC43XX_M4TXEVENT_IRQ_PRIORITY));
-}
+	bool open_for_append(const std::string file_path);
+	bool close();
 
-void m4txevent_interrupt_disable() {
-	nvicDisableVector(M4CORE_IRQn);
-}
+	bool is_ready();
 
-extern "C" {
+	bool read(void* const data, const size_t bytes_to_read);
+	bool write(const void* const data, const size_t bytes_to_write);
 
-CH_IRQ_HANDLER(M4Core_IRQHandler) {
-	CH_IRQ_PROLOGUE();
+	bool puts(const std::string string);
 
-	chSysLockFromIsr();
-	events_flag_isr(EVT_MASK_APPLICATION);
-	chSysUnlockFromIsr();
+	bool sync();
 
-	creg::m4txevent::clear();
+private:
+	const std::string file_path;
+	
+	FIL f;
+};
 
-	CH_IRQ_EPILOGUE();
-}
-
-}
+#endif/*__FILE_H__*/

firmware/application/m4_startup.cpp

@@ -106,7 +106,7 @@ void m4_switch(const char * hash) {
 	
 	// Ask M4 to enter wait loop in RAM
 	BasebandConfiguration baseband_switch {
-		.mode = SWITCH,
+		.mode = 255, // DEBUG
 		.sampling_rate = 0,
 		.decimation_factor = 1,
 	};

firmware/application/main.cpp

@@ -62,7 +62,6 @@
 #include "ui_painter.hpp"
 #include "ui_navigation.hpp"
 
-#include "irq_ipc.hpp"
 #include "irq_lcd_frame.hpp"
 #include "irq_controls.hpp"
 #include "irq_rtc.hpp"

firmware/application/transmitter_model.cpp

@@ -75,31 +75,8 @@ uint32_t TransmitterModel::sampling_rate() const {
 	return baseband_configuration.sampling_rate;
 }
 
-void TransmitterModel::set_sampling_rate(uint32_t hz) {
-	baseband_configuration.sampling_rate = hz;
-	update_baseband_configuration();
-}
-
-mode_type TransmitterModel::modulation() const {
-	return baseband_configuration.mode;
-}
-
-void TransmitterModel::set_modulation(mode_type v) {
-	baseband_configuration.mode = v;
-	update_modulation();
-}
-
-uint32_t TransmitterModel::baseband_oversampling() const {
-	// TODO: Rename decimation_factor.
-	return baseband_configuration.decimation_factor;
-}
-
-void TransmitterModel::set_baseband_oversampling(uint32_t v) {
-	baseband_configuration.decimation_factor = v;
-	update_baseband_configuration();
-}
-
 void TransmitterModel::enable() {
+	enabled_ = true;
 	radio::set_direction(rf::Direction::Transmit);
 	update_tuning_frequency();
 	update_rf_amp();
@@ -107,23 +84,30 @@ void TransmitterModel::enable() {
 	update_vga();
 	update_baseband_bandwidth();
 	update_baseband_configuration();
-	radio::streaming_enable();
+}
+
+void TransmitterModel::baseband_disable() {
+	shared_memory.baseband_queue.push_and_wait(
+		BasebandConfigurationMessage {
+			.configuration = { },
+		}
+	);
 }
 
 void TransmitterModel::disable() {
-	/* TODO: This is a dumb hack to stop baseband from working so hard. */
-	BasebandConfigurationMessage message {
-		.configuration = {
-			.mode = NONE,
-			.sampling_rate = 0,
-			.decimation_factor = 1,
-		}
-	};
-	shared_memory.baseband_queue.push(message);
+	enabled_ = false;
+	baseband_disable();
 
+	// TODO: Responsibility for enabling/disabling the radio is muddy.
+	// Some happens in ReceiverModel, some inside radio namespace.
 	radio::disable();
 }
 
+uint32_t TransmitterModel::baseband_oversampling() const {
+	// TODO: Rename decimation_factor.
+	return baseband_configuration.decimation_factor;
+}
+
 int32_t TransmitterModel::tuning_offset() {
 	return -(sampling_rate() / 4);
 }
@@ -148,8 +132,8 @@ void TransmitterModel::update_vga() {
 	radio::set_vga_gain(vga_gain_db_);
 }
 
-void TransmitterModel::update_modulation() {
-	update_baseband_configuration();
+uint32_t TransmitterModel::modulation() const {
+	return baseband_configuration.mode;
 }
 
 void TransmitterModel::set_baseband_configuration(const BasebandConfiguration config) {
@@ -158,7 +142,12 @@ void TransmitterModel::set_baseband_configuration(const BasebandConfiguration co
 }
 
 void TransmitterModel::update_baseband_configuration() {
-	radio::streaming_disable();
+	// TODO: Move more low-level radio control stuff to M4. It'll enable tighter
+	// synchronization for things like wideband (sweeping) spectrum analysis, and
+	// protocols that need quick RX/TX turn-around.
+
+	// Disabling baseband while changing sampling rates seems like a good idea...
+	baseband_disable();
 
 	clock_manager.set_sampling_frequency(sampling_rate() * baseband_oversampling());
 	update_tuning_frequency();
@@ -166,7 +155,5 @@ void TransmitterModel::update_baseband_configuration() {
 
 	BasebandConfigurationMessage message { baseband_configuration };
 	shared_memory.baseband_queue.push(message);
-
-	radio::streaming_enable();
 }
 

firmware/application/transmitter_model.hpp

@@ -38,7 +38,7 @@ public:
 	) : clock_manager(clock_manager)
 	{
 	}
-
+	
 	rf::Frequency tuning_frequency() const;
 	void set_tuning_frequency(rf::Frequency f);
 
@@ -55,13 +55,10 @@ public:
 	void set_vga(int32_t v_db);
 
 	uint32_t sampling_rate() const;
-	void set_sampling_rate(uint32_t hz);
-
-	mode_type modulation() const;
-	void set_modulation(mode_type v);
 
+	uint32_t modulation() const;
+	
 	uint32_t baseband_oversampling() const;
-	void set_baseband_oversampling(uint32_t v);
 
 	void enable();
 	void disable();
@@ -69,12 +66,14 @@ public:
 	void set_baseband_configuration(const BasebandConfiguration config);
 
 private:
+	rf::Frequency frequency_step_ { 25000 };
+	bool enabled_ { false };
 	bool rf_amp_ { true };
 	int32_t lna_gain_db_ { 0 };
 	uint32_t baseband_bandwidth_ { max2837::filter::bandwidth_minimum };
 	int32_t vga_gain_db_ { 8 };
 	BasebandConfiguration baseband_configuration {
-		.mode = NONE,
+		.mode = 1,
 		.sampling_rate = 2280000,
 		.decimation_factor = 1,
 	};
@@ -89,6 +88,8 @@ private:
 	void update_vga();
 	void update_modulation();
 	void update_baseband_configuration();
+	
+	void baseband_disable();
 };
 
 #endif/*__TRANSMITTER_MODEL_H__*/

firmware/application/ui_about.cpp

@@ -26,6 +26,7 @@
 #include "ymdata.hpp"
 
 #include "portapack.hpp"
+#include "event_m0.hpp"
 
 #include "ui_about.hpp"
 #include "touch.hpp"
@@ -44,23 +45,21 @@ using namespace portapack;
 namespace ui {
 	
 void AboutView::on_show() {
-	auto& message_map = context().message_map();
-	
 	// Just in case
-	message_map.unregister_handler(Message::ID::DisplayFrameSync);
+	EventDispatcher::message_map().unregister_handler(Message::ID::DisplayFrameSync);
 	
 	// "Vertical blank interrupt"
-	message_map.register_handler(Message::ID::DisplayFrameSync,
+	EventDispatcher::message_map().register_handler(Message::ID::DisplayFrameSync,
 		[this](const Message* const) {
 			update();
 		}
 	);
 	
 	// Just in case
-	message_map.unregister_handler(Message::ID::FIFOSignal);
+	EventDispatcher::message_map().unregister_handler(Message::ID::FIFOSignal);
 	
 	// Handle baseband asking to fill up FIFO
-	message_map.register_handler(Message::ID::FIFOSignal,
+	EventDispatcher::message_map().register_handler(Message::ID::FIFOSignal,
 		[this](Message* const p) {
 			FIFODataMessage datamessage;
 			const auto message = static_cast<const FIFOSignalMessage*>(p);
@@ -349,6 +348,7 @@ void AboutView::update() {
 		refresh_cnt++;
 	}
 	
+	// Slowly increase volume to avoid jumpscare
 	if (headphone_vol < (70<<2)) {
 		portapack::audio_codec.set_headphone_volume(volume_t::decibel((headphone_vol/4) - 99) + wolfson::wm8731::headphone_gain_range.max);
 		headphone_vol++;
@@ -370,14 +370,13 @@ void AboutView::ym_init() {
 }
 
 AboutView::AboutView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	uint8_t p, c;
 	
 	transmitter_model.set_baseband_configuration({
-		.mode = PLAY_AUDIO,
+		.mode = 5,
 		.sampling_rate = 1536000,
 		.decimation_factor = 1,
 	});
@@ -412,8 +411,7 @@ AboutView::AboutView(
 	ym_init();
 
 	button_ok.on_select = [this,&nav](Button&){
-		auto& message_map = context().message_map();
-		message_map.unregister_handler(Message::ID::DisplayFrameSync);
+		EventDispatcher::message_map().unregister_handler(Message::ID::DisplayFrameSync);
 		if (framebuffer) chHeapFree(framebuffer);	// Do NOT forget this
 		nav.pop();
 	};

firmware/application/ui_about.hpp

@@ -34,7 +34,7 @@ namespace ui {
 
 class AboutView : public View {
 public:
-	AboutView(NavigationView& nav, TransmitterModel& transmitter_model);
+	AboutView(NavigationView& nav);
 	~AboutView();
 	
 	void on_show() override;
@@ -54,8 +54,6 @@ private:
 		bool same;
 	} ymreg_t;
 	
-	TransmitterModel& transmitter_model;
-	
 	uint16_t headphone_vol = 5<<2;
 	
 	ymreg_t ym_regs[14];

firmware/application/ui_afskrx.cpp

@@ -24,19 +24,17 @@
 #include "ui_spectrum.hpp"
 #include "ui_console.hpp"
 
+#include "event_m0.hpp"
 #include "ff.h"
 
 #include "portapack.hpp"
 using namespace portapack;
 
-#include "ui_receiver.hpp"
-
 namespace ui {
 
 AFSKRXView::AFSKRXView(
-	NavigationView& nav,
-	ReceiverModel& receiver_model
-) : receiver_model(receiver_model)
+	NavigationView& nav
+)
 {
 	add_children({ {
 		&button_done,
@@ -48,7 +46,7 @@ AFSKRXView::AFSKRXView(
 	};
 	
 	receiver_model.set_baseband_configuration({
-		.mode = RX_AFSK,
+		.mode = 6,
 		.sampling_rate = 3072000,
 		.decimation_factor = 4,
 	});
@@ -60,8 +58,7 @@ AFSKRXView::~AFSKRXView() {
 }
 
 void AFSKRXView::on_show() {
-	auto& message_map = context().message_map();
-	message_map.register_handler(Message::ID::AFSKData,
+	EventDispatcher::message_map().register_handler(Message::ID::AFSKData,
 		[this](Message* const p) {
 			const auto message = static_cast<const AFSKDataMessage*>(p);
 			this->on_data_afsk(*message);
@@ -72,8 +69,7 @@ void AFSKRXView::on_show() {
 }
 
 void AFSKRXView::on_hide() {
-	auto& message_map = context().message_map();
-	message_map.unregister_handler(Message::ID::AFSKData);
+	EventDispatcher::message_map().unregister_handler(Message::ID::AFSKData);
 }
 
 void AFSKRXView::on_data_afsk(const AFSKDataMessage& message) {

firmware/application/ui_afskrx.hpp

@@ -42,7 +42,7 @@ namespace ui {
 
 class AFSKRXView : public View {
 public:
-	AFSKRXView(NavigationView& nav, ReceiverModel& receiver_model);
+	AFSKRXView(NavigationView& nav);
 	~AFSKRXView();
 
 	void focus() override;
@@ -51,8 +51,6 @@ public:
 	void on_hide() override;
 
 private:
-	ReceiverModel& receiver_model;
-	
 	std::unique_ptr<Widget> widget_content;
 
 	Button button_done {

firmware/application/ui_afsksetup.cpp

@@ -66,9 +66,8 @@ void AFSKSetupView::updfreq(rf::Frequency f) {
 }
 
 AFSKSetupView::AFSKSetupView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	uint8_t rpt;
 	

firmware/application/ui_afsksetup.hpp

@@ -36,15 +36,13 @@ namespace ui {
 
 class AFSKSetupView : public View {
 public:
-	AFSKSetupView(NavigationView& nav, TransmitterModel& transmitter_model);
+	AFSKSetupView(NavigationView& nav);
 	
 	void updfreq(rf::Frequency f);
 	void focus() override;
 	void paint(Painter& painter) override;
 
 private:
-	TransmitterModel& transmitter_model;
-	
 	Text text_title {
 		{ 40, 32, 160, 16 },
 		"AFSK modulator setup"

firmware/application/ui_alphanum.cpp

@@ -110,7 +110,7 @@ void AlphanumView::set_uppercase() {
 
 	size_t n = 0;
 	for(auto& button : buttons) {
-		add_child(&button);
+		//add_child(&button);
 		const std::string label {
 			key_caps[n]
 		};
@@ -125,7 +125,7 @@ void AlphanumView::set_lowercase() {
 
 	size_t n = 0;
 	for(auto& button : buttons) {
-		add_child(&button);
+		//add_child(&button);
 		const std::string label {
 			key_caps[n]
 		};

firmware/application/ui_debug.cpp

@@ -245,20 +245,6 @@ void RegistersView::focus() {
 	button_done.focus();
 }
 
-void DebugLCRView::paint(Painter& painter) {
-	const Point offset = {
-		static_cast<Coord>(32),
-		static_cast<Coord>(32)
-	};
-	
-	const auto text = to_string_hex(fr, 2);
-	painter.draw_string(
-		screen_pos() + offset,
-		style(),
-		text
-	);
-}
-
 char hexify(char in) {
 	if (in > 9) in += 7;
 	return in + 0x30;
@@ -301,26 +287,26 @@ void DebugLCRView::focus() {
 
 DebugMenuView::DebugMenuView(NavigationView& nav) {
 	add_items<8>({ {
-		{ "Memory",      [&nav](){ nav.push<DebugMemoryView>(); } },
-		{ "Radio State", [&nav](){ nav.push<NotImplementedView>(); } },
-		{ "SD Card",     [&nav](){ nav.push<NotImplementedView>(); } },
-		{ "RFFC5072",    [&nav](){ nav.push<RegistersView>(
+		{ "Memory", ui::Color::white(),      [&nav](){ nav.push<DebugMemoryView>(); } },
+		{ "Radio State", ui::Color::white(), [&nav](){ nav.push<NotImplementedView>(); } },
+		{ "SD Card", ui::Color::white(),     [&nav](){ nav.push<NotImplementedView>(); } },
+		{ "RFFC5072", ui::Color::white(),    [&nav](){ nav.push<RegistersView>(
 			"RFFC5072", RegistersWidgetConfig { 31, 2, 4, 4 },
 			[](const size_t register_number) { return radio::first_if.read(register_number); }
 		); } },
-		{ "MAX2837",     [&nav](){ nav.push<RegistersView>(
+		{ "MAX2837", ui::Color::white(),     [&nav](){ nav.push<RegistersView>(
 			"MAX2837", RegistersWidgetConfig { 32, 2, 3, 4 },
 			[](const size_t register_number) { return radio::second_if.read(register_number); }
 		); } },
-		{ "Si5351C",     [&nav](){ nav.push<RegistersView>(
+		{ "Si5351C", ui::Color::white(),     [&nav](){ nav.push<RegistersView>(
 			"Si5351C", RegistersWidgetConfig { 96, 2, 2, 8 },
 			[](const size_t register_number) { return portapack::clock_generator.read_register(register_number); }
 		); } },
-		{ "WM8731",      [&nav](){ nav.push<RegistersView>(
+		{ "WM8731", ui::Color::white(),      [&nav](){ nav.push<RegistersView>(
 			"WM8731", RegistersWidgetConfig { wolfson::wm8731::reg_count, 1, 3, 4 },
 			[](const size_t register_number) { return portapack::audio_codec.read(register_number); }
 		); } },
-		{ "Temperature", [&nav](){ nav.push<TemperatureView>(); } },
+		{ "Temperature", ui::Color::white(), [&nav](){ nav.push<TemperatureView>(); } },
 	} });
 	on_left = [&nav](){ nav.pop(); };
 }

firmware/application/ui_debug.hpp

@@ -246,8 +246,6 @@ public:
 
 	void focus() override;
 
-	void paint(Painter& painter) override;
-
 private:
 	Text text_lcr1 {
 		{ 16, 32, 208, 8 },

firmware/application/ui_jammer.cpp

@@ -29,6 +29,8 @@
 #include "hackrf_gpio.hpp"
 #include "portapack.hpp"
 #include "radio.hpp"
+#include "string_format.hpp"
+#include "event_m0.hpp"
 
 #include "hackrf_hal.hpp"
 #include "portapack_shared_memory.hpp"
@@ -37,7 +39,7 @@
 #include <cstring>
 #include <stdio.h>
 
-using namespace hackrf::one;
+using namespace portapack;
 
 namespace ui {
 
@@ -146,9 +148,8 @@ void JammerView::updfreq(uint8_t id, rf::Frequency f) {
 }
 
 JammerView::JammerView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	
 	static constexpr Style style_val {
@@ -169,7 +170,11 @@ JammerView::JammerView(
 		.foreground = Color::grey(),
 	};
 	
-	transmitter_model.set_modulation(TX_JAMMER);
+	transmitter_model.set_baseband_configuration({
+		.mode = 3,
+		.sampling_rate = 1536000,	// ?
+		.decimation_factor = 1,
+	});
 	
 	add_children({ {
 		&text_type,
@@ -232,11 +237,9 @@ JammerView::JammerView(
 	button_transmit.on_select = [this,&transmitter_model](Button&) {
 		uint8_t i = 0;
 		rf::Frequency t, range_lower;
-		auto& message_map = context().message_map();
+		EventDispatcher::message_map().unregister_handler(Message::ID::Retune);
 		
-		message_map.unregister_handler(Message::ID::Retune);
-		
-		message_map.register_handler(Message::ID::Retune,
+		EventDispatcher::message_map().register_handler(Message::ID::Retune,
 			[this,&transmitter_model](Message* const p) {
 				const auto message = static_cast<const RetuneMessage*>(p);
 				if (message->freq > 0) {

firmware/application/ui_jammer.hpp

@@ -36,7 +36,7 @@ namespace ui {
 
 class JammerView : public View {
 public:
-	JammerView(NavigationView& nav, TransmitterModel& transmitter_model);
+	JammerView(NavigationView& nav);
 	~JammerView();
 	
 	void updfreq(uint8_t id, rf::Frequency f);
@@ -117,7 +117,6 @@ private:
 	
 	bool jamming = false;
 	rf::Frequency f;
-	TransmitterModel& transmitter_model;
 	
 	Text text_type {
 		{ 1 * 8, 1 * 16, 40, 16 },

firmware/application/ui_lcr.cpp

@@ -31,8 +31,11 @@
 #include "ff.h"
 #include "hackrf_gpio.hpp"
 #include "portapack.hpp"
+#include "event_m0.hpp"
 #include "radio.hpp"
 
+#include "string_format.hpp"
+
 #include "hackrf_hal.hpp"
 #include "portapack_shared_memory.hpp"
 #include "portapack_persistent_memory.hpp"
@@ -40,7 +43,7 @@
 #include <cstring>
 #include <stdio.h>
 
-using namespace hackrf::one;
+using namespace portapack;
 
 namespace ui {
 
@@ -176,9 +179,8 @@ void LCRView::paint(Painter& painter) {
 }
 
 LCRView::LCRView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	char finalstr[24] = {0};
 	
@@ -188,7 +190,12 @@ LCRView::LCRView(
 		.foreground = Color::black(),
 	};
 	
-	transmitter_model.set_modulation(TX_LCR);
+	transmitter_model.set_baseband_configuration({
+		.mode = 1,
+		.sampling_rate = 1536000,	// Is this right ?
+		.decimation_factor = 1,
+	});
+
 	transmitter_model.set_tuning_frequency(portapack::persistent_memory::tuned_frequency());
 	memset(litteral, 0, 5*8);
 	memset(rgsb, 0, 5);
@@ -277,8 +284,6 @@ LCRView::LCRView(
 	};
 	
 	button_transmit.on_select = [this,&transmitter_model](Button&){		
-		auto& message_map = context().message_map();
-		
 		make_frame();
 			
 		shared_memory.afsk_samples_per_bit = 228000/portapack::persistent_memory::afsk_bitrate();
@@ -293,7 +298,7 @@ LCRView::LCRView(
 		shared_memory.afsk_transmit_done = false;
 		shared_memory.afsk_repeat = (portapack::persistent_memory::afsk_config() >> 8) & 0xFF;
 
-		message_map.register_handler(Message::ID::TXDone,
+		EventDispatcher::message_map().register_handler(Message::ID::TXDone,
 			[this,&transmitter_model](Message* const p) {
 				char str[8];
 				const auto message = static_cast<const TXDoneMessage*>(p);
@@ -319,7 +324,7 @@ LCRView::LCRView(
 	};
 	
 	button_txsetup.on_select = [&nav, &transmitter_model](Button&){
-		nav.push(new AFSKSetupView { nav, transmitter_model });
+		nav.push(new AFSKSetupView { nav });
 	};
 
 	button_exit.on_select = [&nav](Button&){

firmware/application/ui_lcr.hpp

@@ -36,7 +36,7 @@ namespace ui {
 
 class LCRView : public View {
 public:
-	LCRView(NavigationView& nav, TransmitterModel& transmitter_model);
+	LCRView(NavigationView& nav);
 	~LCRView();
 	
 	void make_frame();
@@ -63,7 +63,6 @@ private:
 	char lcrframe[256];
 	char lcrframe_f[256];
 	rf::Frequency f;
-	TransmitterModel& transmitter_model;
 
 	Text text_status {
 		{ 168, 196, 64, 16 },

firmware/application/ui_loadmodule.cpp

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
  *
  * This file is part of PortaPack.
  *
@@ -24,10 +25,12 @@
 #include "ch.h"
 
 #include "ff.h"
+#include "event_m0.hpp"
 #include "hackrf_gpio.hpp"
 #include "portapack.hpp"
 #include "portapack_shared_memory.hpp"
 #include "hackrf_hal.hpp"
+#include "string_format.hpp"
 
 #include <cstring>
 #include <stdio.h>
@@ -45,18 +48,17 @@ void LoadModuleView::paint(Painter& painter) {
 }
 
 void LoadModuleView::on_hide() {
-	auto& message_map = context().message_map();
-	message_map.unregister_handler(Message::ID::ReadyForSwitch);
+	EventDispatcher::message_map().unregister_handler(Message::ID::ReadyForSwitch);
+	EventDispatcher::message_map().unregister_handler(Message::ID::ModuleID);
 }
 
 void LoadModuleView::on_show() {
 	// Ask for MD5 signature and compare
 	ModuleIDMessage message;
-	auto& message_map = context().message_map();
+
+	//message_map.unregister_handler(Message::ID::ModuleID);
 	
-	message_map.unregister_handler(Message::ID::ModuleID);
-	
-	message_map.register_handler(Message::ID::ModuleID,
+	EventDispatcher::message_map().register_handler(Message::ID::ModuleID,
 		[this](Message* const p) {
 			uint8_t c;
 			const auto message = static_cast<const ModuleIDMessage*>(p);
@@ -78,13 +80,66 @@ void LoadModuleView::on_show() {
 	shared_memory.baseband_queue.push(message);
 }
 
+int LoadModuleView::load_image() {
+	const char magic[6] = {'P', 'P', 'M', ' ', 0x02, 0x00};
+	UINT bw;
+	uint8_t i;
+	uint32_t cnt;
+	char md5sum[16];
+	FILINFO modinfo;
+	FIL modfile;
+	DIR rootdir;
+	FRESULT res;
+	
+	// Scan SD card root directory for files with the right MD5 fingerprint at the right location
+	if (f_opendir(&rootdir, "/") == FR_OK) {
+		for (;;) {
+			res = f_readdir(&rootdir, &modinfo);
+			if (res != FR_OK || modinfo.fname[0] == 0) break;	// Reached last file, abort
+			// Only care about files with .bin extension
+			if ((!(modinfo.fattrib & AM_DIR)) && (modinfo.fname[9] == 'B') && (modinfo.fname[10] == 'I') && (modinfo.fname[11] == 'N')) {
+				res = f_open(&modfile, modinfo.fname, FA_OPEN_EXISTING | FA_READ);
+				if (res != FR_OK) return 0;
+				// Magic bytes and version check
+				f_read(&modfile, &md5sum, 6, &bw);
+				for (i = 0; i < 6; i++)
+					if (md5sum[i] != magic[i]) break;
+				if (i == 6) {
+					f_lseek(&modfile, 26);
+					f_read(&modfile, &md5sum, 16, &bw);
+					for (i = 0; i < 16; i++)
+						if (md5sum[i] != _hash[i]) break;
+					// f_read can't read more than 512 bytes at a time ?
+					if (i == 16) {
+						f_lseek(&modfile, 512);
+						for (cnt = 0; cnt < 64; cnt++) {
+							if (f_read(&modfile, reinterpret_cast<void*>(portapack::memory::map::m4_code.base() + (cnt * 512)), 512, &bw)) return 0;
+						}
+						f_close(&modfile);
+						f_closedir(&rootdir);
+						LPC_RGU->RESET_CTRL[0] = (1 << 13);
+						return 1;
+					}
+				}
+				f_close(&modfile);
+			}
+		}
+		f_closedir(&rootdir);
+	}
+	
+	return 0;
+}
+
 void LoadModuleView::loadmodule() {
-	auto& message_map = context().message_map();
-	message_map.register_handler(Message::ID::ReadyForSwitch,
+	//message_map.unregister_handler(Message::ID::ReadyForSwitch);
+	
+	EventDispatcher::message_map().register_handler(Message::ID::ReadyForSwitch,
 		[this](Message* const p) {
 			(void)p;
-			if (m4_load_image()) {
-				text_info.set("Module loaded :)");
+			if (load_image()) {
+				text_info.set(to_string_hex(*((unsigned int*)0x10080000),8));
+				//text_infob.set(to_string_hex(*((unsigned int*)0x10080004),8));
+				text_infob.set("Module loaded :)");
 				_mod_loaded = true;
 			} else {
 				text_info.set("Module not found :(");
@@ -104,6 +159,7 @@ LoadModuleView::LoadModuleView(
 {
 	add_children({ {
 		&text_info,
+		&text_infob,
 		&button_ok
 	} });
 	

firmware/application/ui_loadmodule.hpp

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
  *
  * This file is part of PortaPack.
  *
@@ -31,7 +32,7 @@ namespace ui {
 
 class LoadModuleView : public View {
 public:
-	LoadModuleView(NavigationView& nav, const char * hash, View* new_view);
+	LoadModuleView(NavigationView& nav, const char * hash, View * new_view);
 	void loadmodule();
 	
 	void on_show() override;
@@ -40,12 +41,17 @@ public:
 	void paint(Painter& painter) override;
 
 private:
+	int load_image(void);
 	const char * _hash;
 	bool _mod_loaded = false;
 	
 	Text text_info {
 		{ 8, 64, 224, 16 },
-		"Searching module..."
+		"-"
+	};
+	Text text_infob {
+		{ 8, 64+16, 224, 16 },
+		"-"
 	};
 	
 	Button button_ok {

firmware/application/ui_navigation.cpp

@@ -108,6 +108,10 @@ View* NavigationView::push_view(std::unique_ptr<View> new_view) {
 	return p;
 }
 
+void NavigationView::push(View* v) {
+	push_view(std::unique_ptr<View>(v));
+}
+
 void NavigationView::pop() {
 	// Can't pop last item from stack.
 	if( view_stack.size() > 1 ) {
@@ -149,9 +153,9 @@ void NavigationView::focus() {
 
 TranspondersMenuView::TranspondersMenuView(NavigationView& nav) {
 	add_items<3>({ {
-		{ "AIS:  Boats",          [&nav](){ nav.push<AISAppView>(); } },
-		{ "ERT:  Utility Meters", [&nav](){ nav.push<ERTAppView>(); } },
-		{ "TPMS: Cars",           [&nav](){ nav.push<TPMSAppView>(); } },
+		{ "AIS:  Boats",          ui::Color::white(), [&nav](){ nav.push<AISAppView>(); } },
+		{ "ERT:  Utility Meters", ui::Color::white(), [&nav](){ nav.push<ERTAppView>(); } },
+		{ "TPMS: Cars",           ui::Color::white(), [&nav](){ nav.push<TPMSAppView>(); } },
 	} });
 }
 
@@ -159,8 +163,8 @@ TranspondersMenuView::TranspondersMenuView(NavigationView& nav) {
 
 ReceiverMenuView::ReceiverMenuView(NavigationView& nav) {
 	add_items<2>({ {
-		{ "Audio",        [&nav](){ nav.push<ReceiverView>(); } },
-		{ "Transponders", [&nav](){ nav.push<TranspondersMenuView>(); } },
+		{ "Audio",        ui::Color::white(), [&nav](){ nav.push<ReceiverView>(); } },
+		{ "Transponders", ui::Color::white(), [&nav](){ nav.push<TranspondersMenuView>(); } },
 	} });
 }
 
@@ -168,24 +172,24 @@ ReceiverMenuView::ReceiverMenuView(NavigationView& nav) {
 
 SystemMenuView::SystemMenuView(NavigationView& nav) {
 	add_items<10>({ {
-		{ "Play dead",	ui::Color::red(),  			[&nav](){ nav.push(new PlayDeadView 	  { nav, false }); } },
-		{ "Receiver", ui::Color::cyan(), 			[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband, new ReceiverMenuView { nav, receiver_model }}); } },
+		{ "Play dead",	ui::Color::red(),  			[&nav](){ nav.push<PlayDeadView>(false); } },
+		{ "Receiver", ui::Color::cyan(), 			[&nav](){ nav.push<LoadModuleView>(md5_baseband, new ReceiverMenuView(nav)); } },
 		//{ "Nordic/BTLE RX", ui::Color::cyan(),	[&nav](){ nav.push(new NotImplementedView { nav }); } },
-		{ "Jammer", ui::Color::white(),   			[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband, new JammerView { nav, transmitter_model }}); } },
+		{ "Jammer", ui::Color::white(),   			[&nav](){ nav.push<LoadModuleView>(md5_baseband, new JammerView(nav)); } },
 		//{ "Audio file TX", ui::Color::white(),	[&nav](){ nav.push(new NotImplementedView { nav }); } },
 		//{ "Encoder TX", ui::Color::green(),		[&nav](){ nav.push(new NotImplementedView { nav }); } },
 		//{ "Whistle", ui::Color::purple(),  		[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband, new WhistleView { nav, transmitter_model }}); } },
 		//{ "SIGFOX RX", ui::Color::orange(),  		[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband, new SIGFRXView 		  { nav, receiver_model }}); } },
-		{ "RDS TX", ui::Color::yellow(),  			[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband_tx, new RDSView { nav, transmitter_model }}); } },
-		{ "Xylos TX", ui::Color::orange(),  		[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband_tx, new XylosView	{ nav, transmitter_model }}); } },
+		{ "RDS TX", ui::Color::yellow(),  			[&nav](){ nav.push<LoadModuleView>(md5_baseband_tx, new RDSView(nav)); } },
+		{ "Xylos TX", ui::Color::orange(),  		[&nav](){ nav.push<LoadModuleView>(md5_baseband_tx, new XylosView(nav)); } },
 		//{ "Xylos RX", ui::Color::green(),  		[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband_tx, new XylosRXView	{ nav, receiver_model }}); } },
 		//{ "AFSK RX", ui::Color::cyan(),  			[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband, new AFSKRXView         { nav, receiver_model }}); } },
-		{ "TEDI/LCR TX", ui::Color::yellow(),  		[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband_tx, new LCRView { nav, transmitter_model }}); } },
+		{ "TEDI/LCR TX", ui::Color::yellow(),  		[&nav](){ nav.push<LoadModuleView>(md5_baseband_tx, new LCRView(nav)); } },
 		//{ "Numbers station", ui::Color::purple(),	[&nav](){ nav.push(new LoadModuleView { nav, md5_baseband_tx, new NumbersStationView { nav, transmitter_model }}); } },
-		{ "Setup", ui::Color::white(),    			[&nav](){ nav.push(new SetupMenuView      { nav }); } },
-		{ "About", ui::Color::white(),    			[&nav](){ nav.push(new AboutView          { nav, transmitter_model }); } },
-		{ "Debug", ui::Color::white(),    			[&nav](){ nav.push(new DebugMenuView      { nav }); } },
-		{ "HackRF", ui::Color::white(),   			[&nav](){ nav.push(new HackRFFirmwareView { nav }); } },
+		{ "Setup", ui::Color::white(),    			[&nav](){ nav.push<SetupMenuView>(); } },
+		{ "About", ui::Color::white(),    			[&nav](){ nav.push<AboutView>(); } },
+		{ "Debug", ui::Color::white(),    			[&nav](){ nav.push<DebugMenuView>(); } },
+		{ "HackRF", ui::Color::white(),   			[&nav](){ nav.push<HackRFFirmwareView>(); } },
 	} });
 }
 
@@ -266,6 +270,41 @@ HackRFFirmwareView::HackRFFirmwareView(NavigationView& nav) {
 	} });
 }
 
+/* PlayDeadView **********************************************************/
+
+void PlayDeadView::focus() {
+	button_done.focus();
+}
+
+PlayDeadView::PlayDeadView(NavigationView& nav, bool booting) {
+	_booting = booting;
+	persistent_memory::set_playing_dead(0x59);
+	
+	add_children({ {
+		&text_playdead1,
+		&text_playdead2,
+		&button_done,
+	} });
+	
+	button_done.on_dir = [this,&nav](Button&, KeyEvent key){
+		sequence = (sequence<<3) | static_cast<std::underlying_type<KeyEvent>::type>(key);
+	};
+	
+	button_done.on_select = [this,&nav](Button&){
+		if (sequence == persistent_memory::playdead_sequence()) {
+			persistent_memory::set_playing_dead(0);
+			if (_booting) {
+				nav.pop();
+				nav.push<SystemMenuView>();
+			} else {
+				nav.pop();
+			}
+		} else {
+			sequence = 0;
+		}
+	};
+}
+
 void HackRFFirmwareView::focus() {
 	button_no.focus();
 }

firmware/application/ui_navigation.hpp

@@ -82,6 +82,8 @@ public:
 	T* push(Args&&... args) {
 		return reinterpret_cast<T*>(push_view(std::unique_ptr<View>(new T(*this, std::forward<Args>(args)...))));
 	}
+	
+	void push(View* v);
 
 	void pop();
 
@@ -120,6 +122,29 @@ private:
 	};
 };
 
+class PlayDeadView : public View {
+public:
+	PlayDeadView(NavigationView& nav, bool booting);
+	void focus() override;
+
+private:
+	bool _booting;
+	uint32_t sequence = 0;
+	Text text_playdead1 {
+		{ 6 * 8, 7 * 16, 14 * 8, 16 },
+		"Firmware error"
+	};
+	Text text_playdead2 {
+		{ 6 * 8, 9 * 16, 16 * 8, 16 },
+		"0x1400_0000 : 2C"
+	};
+	
+	Button button_done {
+		{ 240, 0, 1, 1 },
+		""
+	};
+};
+
 class ReceiverMenuView : public MenuView {
 public:
 	ReceiverMenuView(NavigationView& nav);

firmware/application/ui_rds.cpp

@@ -34,7 +34,7 @@
 
 #include <cstring>
 
-using namespace hackrf::one;
+using namespace portapack;
 
 namespace ui {
 
@@ -134,9 +134,8 @@ void RDSView::paint(Painter& painter) {
 }
 
 RDSView::RDSView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	transmitter_model.set_tuning_frequency(93000000);
 	strcpy(psname, "TEST1234");

firmware/application/ui_rds.hpp

@@ -86,7 +86,7 @@ private:
 */
 class RDSView : public View {
 public:
-	RDSView(NavigationView& nav, TransmitterModel& transmitter_model);
+	RDSView(NavigationView& nav);
 	~RDSView();
 
 	void focus() override;
@@ -94,7 +94,6 @@ public:
 
 private:
 	char psname[9];
-	TransmitterModel& transmitter_model;
 	
 	Text text_title {
 		{ 76, 16, 88, 16 },

firmware/application/ui_setup.cpp

@@ -20,13 +20,16 @@
  */
 
 #include "ui_setup.hpp"
-
+#include "string_format.hpp"
 #include "portapack_persistent_memory.hpp"
+#include "ui_font_fixed_8x16.hpp"
+
 #include "lpc43xx_cpp.hpp"
 using namespace lpc43xx;
 
 #include "portapack.hpp"
 using portapack::receiver_model;
+using namespace portapack;
 
 namespace ui {
 
@@ -167,12 +170,6 @@ void AntennaBiasSetupView::focus() {
 	button_done.focus();
 }
 
-
-
-void AboutView::focus() {
-	button_ok.focus();
-}
-
 void SetTouchCalibView::focus() {
 	button_ok.focus();
 }
@@ -433,13 +430,13 @@ void ModInfoView::focus() {
 
 SetupMenuView::SetupMenuView(NavigationView& nav) {
 	add_items<7>({ {
-		{ "SD card modules", ui::Color::white(), [&nav](){ nav.push(new ModInfoView { nav }); } },
-		{ "Date/Time", ui::Color::white(), [&nav](){ nav.push(new SetDateTimeView { nav }); } },
+		{ "SD card modules", ui::Color::white(), [&nav](){ nav.push<ModInfoView>(); } },
+		{ "Date/Time", ui::Color::white(), [&nav](){ nav.push<SetDateTimeView>(); } },
 		{ "Frequency correction", ui::Color::white(), [&nav](){ nav.push<SetFrequencyCorrectionView>(); } },
-		{ "Antenna Bias Voltage", [&nav](){ nav.push<AntennaBiasSetupView>(); } },		
-		{ "Touch screen", ui::Color::white(),     [&nav](){ nav.push(new SetTouchCalibView { nav }); } },
-		{ "Play dead", ui::Color::red(), [&nav](){ nav.push(new SetPlayDeadView { nav }); } },
-		{ "UI", ui::Color::white(), [&nav](){ nav.push(new SetUIView { nav }); } },
+		{ "Antenna Bias Voltage", ui::Color::white(), [&nav](){ nav.push<AntennaBiasSetupView>(); } },		
+		{ "Touch screen", ui::Color::white(),     [&nav](){ nav.push<SetTouchCalibView>(); } },
+		{ "Play dead", ui::Color::red(), [&nav](){ nav.push<SetPlayDeadView>(); } },
+		{ "UI", ui::Color::white(), [&nav](){ nav.push<SetUIView>(); } },
 	} });
 	on_left = [&nav](){ nav.pop(); };
 }

firmware/application/ui_setup.hpp

@@ -25,6 +25,7 @@
 #include "ui_widget.hpp"
 #include "ui_menu.hpp"
 #include "ui_navigation.hpp"
+#include "ff.h"
 
 #include <cstdint>
 
@@ -252,6 +253,132 @@ private:
 	};
 };
 
+class SetUIView : public View {
+public:
+	SetUIView(NavigationView& nav);
+	void focus() override;
+	
+private:
+	Checkbox checkbox_showsplash {
+		{ 3 * 8, 2 * 16},
+		"Show splash"
+	};
+	
+	Checkbox checkbox_bloff {
+		{ 3 * 8, 4 * 16},
+		"Backlight off after:"
+	};
+
+	OptionsField options_bloff {
+		{ 10 * 8, 5 * 16 + 4 },
+		10,
+		{
+			{ "5 seconds ", 0 },
+			{ "15 seconds", 1 },
+			{ "1 minute  ", 2 },
+			{ "5 minutes ", 3 },
+			{ "10 minutes", 4 }
+		}
+	};
+	
+	Button button_ok {
+		{ 4 * 8, 272, 64, 24 },
+		"Ok"
+	};
+};
+
+class SetPlayDeadView : public View {
+public:
+	SetPlayDeadView(NavigationView& nav);
+	void focus() override;
+private:
+	bool entermode = false;
+	uint32_t sequence = 0;
+	uint8_t keycount, key_code;
+	char sequence_txt[11];
+	
+	Text text_sequence {
+		{ 64, 32, 14 * 8, 16 },
+		"Enter sequence",
+	};
+	
+	Button button_enter {
+		{ 16, 192, 96, 24 },
+		"Enter"
+	};
+	Button button_cancel {
+		{ 128, 192, 96, 24 },
+		"Cancel"
+	};
+};
+
+class ModInfoView : public View {
+public:
+	ModInfoView(NavigationView& nav);
+	void focus() override;
+	void on_show() override;
+	
+private:
+	void update_infos(uint8_t modn);
+	
+	typedef struct moduleinfo_t{
+		char filename[9];
+		uint16_t version;
+		uint32_t size;
+		char md5[16];
+		char name[16];
+		char description[214];
+	} moduleinfo_t;
+	
+	moduleinfo_t module_list[8];	// 8 max for now
+	
+	Text text_modcount {
+		{ 2 * 8, 1 * 16, 18 * 8, 16 },
+		"Searching..."
+	};
+	
+	OptionsField option_modules {
+		{ 2 * 8, 2 * 16 },
+		24,
+		{ { "-", 0 }
+		}
+	};
+	
+	Text text_name {
+		{ 2 * 8, 4 * 16, 5 * 8, 16 },
+		"Name:"
+	};
+	Text text_namestr {
+		{ 8 * 8, 4 * 16, 16 * 8, 16 },
+		"..."
+	};
+	Text text_size {
+		{ 2 * 8, 5 * 16, 5 * 8, 16 },
+		"Size:"
+	};
+	Text text_sizestr {
+		{ 8 * 8, 5 * 16, 16 * 8, 16 },
+		"..."
+	};
+	Text text_md5 {
+		{ 2 * 8, 6 * 16, 4 * 8, 16 },
+		"MD5:"
+	};
+	Text text_md5_a {
+		{ 7 * 8, 6 * 16, 16 * 8, 16 },
+		"..."
+	};
+	Text text_md5_b {
+		{ 7 * 8, 7 * 16, 16 * 8, 16 },
+		"..."
+	};
+	
+	Button button_ok {
+		{ 4 * 8, 272, 64, 24 },
+		"Ok"
+	};
+};
+
 class SetupMenuView : public MenuView {
 public:
 	SetupMenuView(NavigationView& nav);

firmware/application/ui_sigfrx.cpp

@@ -25,11 +25,13 @@
 #include "ch.h"
 #include "evtimer.h"
 
+#include "event_m0.hpp"
 #include "ff.h"
 #include "hackrf_gpio.hpp"
 #include "portapack.hpp"
 #include "radio.hpp"
-//#include "fox_bmp.hpp"
+
+#include "string_format.hpp"
 
 #include "hackrf_hal.hpp"
 #include "portapack_shared_memory.hpp"
@@ -38,7 +40,7 @@
 #include <cstring>
 #include <stdio.h>
 
-using namespace hackrf::one;
+using namespace portapack;
 
 namespace ui {
 
@@ -98,20 +100,23 @@ void SIGFRXView::on_channel_spectrum(const ChannelSpectrum& spectrum) {
 }
 
 void SIGFRXView::on_show() {
-	context().message_map().register_handler(Message::ID::ChannelSpectrum,
+	/*EventDispatcher::message_map().register_handler(Message::ID::ChannelSpectrum,
 		[this](const Message* const p) {
 			this->on_channel_spectrum(reinterpret_cast<const ChannelSpectrumMessage*>(p)->spectrum);
 		}
-	);
+	);*/
+}
+
+void SIGFRXView::on_hide() {
+	//EventDispatcher::message_map().unregister_handler(Message::ID::ChannelSpectrum);
 }
 
 SIGFRXView::SIGFRXView(
-	NavigationView& nav,
-	ReceiverModel& receiver_model
-) : receiver_model(receiver_model)
+	NavigationView& nav
+)
 {
 	receiver_model.set_baseband_configuration({
-		.mode = RX_SIGFOX,
+		.mode = 255,	// DEBUG
 		.sampling_rate = 3072000,
 		.decimation_factor = 4,
 	});

firmware/application/ui_sigfrx.hpp

@@ -36,17 +36,16 @@ namespace ui {
 
 class SIGFRXView : public View {
 public:
-	SIGFRXView(NavigationView& nav, ReceiverModel& receiver_model);
+	SIGFRXView(NavigationView& nav);
 	~SIGFRXView();
 	void on_channel_spectrum(const ChannelSpectrum& spectrum);
 	
 	void on_show() override;
+	void on_hide() override;
 	void focus() override;
 	void paint(Painter& painter) override;
 
-private:
-	ReceiverModel& receiver_model;
-	
+private:	
 	uint8_t last_channel;
 	uint8_t detect_counter = 0;
 	

firmware/application/ui_xylos.cpp

@@ -25,6 +25,7 @@
 #include "ch.h"
 #include "hackrf_hal.hpp"
 
+#include "event_m0.hpp"
 #include "ui_alphanum.hpp"
 #include "ff.h"
 #include "hackrf_gpio.hpp"
@@ -38,7 +39,7 @@
 #include <cstring>
 #include <stdio.h>
 
-using namespace hackrf::one;
+using namespace portapack;
 
 namespace ui {
 	
@@ -91,9 +92,8 @@ void XylosRXView::on_show() {
 }
 
 XylosRXView::XylosRXView(
-	NavigationView& nav,
-	ReceiverModel& receiver_model
-) : receiver_model(receiver_model)
+	NavigationView& nav
+)
 {
 	char ccirdebug[21] = { 0,0,0,0,1,8,1,10,10,10,11,1,1,2,0,11,0,0,0,0,0xFF };
 	
@@ -211,9 +211,8 @@ void XylosView::journuit() {
 }
 
 XylosView::XylosView(
-	NavigationView& nav,
-	TransmitterModel& transmitter_model
-) : transmitter_model(transmitter_model)
+	NavigationView& nav
+)
 {
 	static constexpr Style style_val {
 		.font = font::fixed_8x16,
@@ -228,13 +227,11 @@ XylosView::XylosView(
 	};
 	
 	transmitter_model.set_baseband_configuration({
-		.mode = TX_XYLOS,
+		.mode = 4,
 		.sampling_rate = 1536000,
 		.decimation_factor = 1,
 	});
-	
-	transmitter_model.set_modulation(TX_XYLOS); // Useless ?
-	
+
 	add_children({ {
 		&text_title,
 		&button_txtest,
@@ -323,11 +320,9 @@ XylosView::XylosView(
 	button_txtest.on_select = [this,&transmitter_model](Button&) {
 		const uint8_t ccirtest[21] = { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,14,13,12,11,0xFF };
 		if (txing == false) {
-			auto& message_map = context().message_map();
+			EventDispatcher::message_map().unregister_handler(Message::ID::TXDone);
 			
-			message_map.unregister_handler(Message::ID::TXDone);
-			
-			message_map.register_handler(Message::ID::TXDone,
+			EventDispatcher::message_map().register_handler(Message::ID::TXDone,
 				[this,&transmitter_model](Message* const p) {
 					const auto message = static_cast<const TXDoneMessage*>(p);
 					if (message->n == 25) {
@@ -359,11 +354,9 @@ XylosView::XylosView(
 		if (txing == false) {
 			upd_message();
 			
-			auto& message_map = context().message_map();
+			EventDispatcher::message_map().unregister_handler(Message::ID::TXDone);
 			
-			message_map.unregister_handler(Message::ID::TXDone);
-			
-			message_map.register_handler(Message::ID::TXDone,
+			EventDispatcher::message_map().register_handler(Message::ID::TXDone,
 				[this,&transmitter_model](Message* const p) {
 					uint8_t c;
 					char progress[21];

firmware/application/ui_xylos.hpp

@@ -45,7 +45,7 @@ void do_something();
 
 class XylosRXView : public View {
 public:
-	XylosRXView(NavigationView& nav, ReceiverModel& receiver_model);
+	XylosRXView(NavigationView& nav);
 	~XylosRXView();
 	
 	void talk();
@@ -91,8 +91,6 @@ private:
 												"trailer.wav"
 										};
 	char ccir_received[21];
-
-	ReceiverModel& receiver_model;
 	
 	Text text_title {
 		{ 1 * 8, 1 * 16, 11, 16 },
@@ -142,7 +140,7 @@ private:
 
 class XylosView : public View {
 public:
-	XylosView(NavigationView& nav, TransmitterModel& transmitter_model);
+	XylosView(NavigationView& nav);
 	~XylosView();
 	void journuit();
 	
@@ -184,8 +182,6 @@ private:
 										};
 	char ccirmessage[21];
 	char ccir_received[21];
-
-	TransmitterModel& transmitter_model;
 	
 	Text text_title {
 		{ 1 * 8, 1 * 16, 11, 16 },

firmware/baseband-tx/Makefile

@@ -124,16 +124,20 @@ CSRC = $(PORTSRC) \
 # setting.
 CPPSRC = main.cpp \
          message_queue.cpp \
+         event.cpp \
          event_m4.cpp \
-         irq_ipc_m4.cpp \
          gpdma.cpp \
          baseband_dma.cpp \
+         baseband_sgpio.cpp \
          portapack_shared_memory.cpp \
+         baseband_thread.cpp \
          baseband_processor.cpp \
-         channel_decimator.cpp \
+         baseband_stats_collector.cpp \
          dsp_decimate.cpp \
          dsp_demodulate.cpp \
          matched_filter.cpp \
+         spectrum_collector.cpp \
+         proc_rds.cpp \
          proc_jammer.cpp \
          proc_fsk_lcr.cpp \
          proc_xylos.cpp \
@@ -144,11 +148,15 @@ CPPSRC = main.cpp \
          packet_builder.cpp \
          dsp_fft.cpp \
          dsp_fir_taps.cpp \
+         dsp_iir.cpp \
          fxpt_atan2.cpp \
          rssi.cpp \
          rssi_dma.cpp \
+         rssi_thread.cpp \
          audio.cpp \
+         audio_output.cpp \
          audio_dma.cpp \
+         audio_stats_collector.cpp \
          touch_dma.cpp \
          ../common/utility.cpp \
          ../common/chibios_cpp.cpp \

firmware/baseband-tx/audio_dma.cpp

@@ -121,7 +121,7 @@ constexpr gpdma::channel::Config config_rx() {
 
 /* TODO: Clean up terminology around "buffer", "transfer", "samples" */
 
-constexpr size_t buffer_samples_log2n = 8; // Bumped to 8, to allow filling at 750Hz
+constexpr size_t buffer_samples_log2n = 7;
 constexpr size_t buffer_samples = (1 << buffer_samples_log2n);
 constexpr size_t transfers_per_buffer_log2n = 2;
 constexpr size_t transfers_per_buffer = (1 << transfers_per_buffer_log2n);
@@ -208,8 +208,8 @@ void enable() {
 }
 
 void disable() {
-	gpdma_channel_i2s0_tx.disable_force();
-	gpdma_channel_i2s0_rx.disable_force();
+	gpdma_channel_i2s0_tx.disable();
+	gpdma_channel_i2s0_rx.disable();
 }
 
 buffer_t tx_empty_buffer() {

firmware/baseband-tx/audio_output.cpp

@@ -0,0 +1,100 @@
+/*
+ * 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 "audio_output.hpp"
+
+#include "portapack_shared_memory.hpp"
+
+#include "audio_dma.hpp"
+
+#include "message.hpp"
+
+#include <cstdint>
+#include <cstddef>
+#include <array>
+
+void AudioOutput::configure(
+	const iir_biquad_config_t& hpf_config,
+	const iir_biquad_config_t& deemph_config,
+	const float squelch_threshold
+) {
+	hpf.configure(hpf_config);
+	deemph.configure(deemph_config);
+	squelch.set_threshold(squelch_threshold);
+}
+
+void AudioOutput::write(
+	const buffer_s16_t& audio
+) {
+	std::array<float, 32> audio_f;
+	for(size_t i=0; i<audio.count; i++) {
+		audio_f[i] = audio.p[i];
+	}
+	write(buffer_f32_t {
+		audio_f.data(),
+		audio.count,
+		audio.sampling_rate
+	});
+}
+
+void AudioOutput::write(
+	const buffer_f32_t& audio
+) {
+	const auto audio_present_now = squelch.execute(audio);
+
+	hpf.execute_in_place(audio);
+	deemph.execute_in_place(audio);
+
+	audio_present_history = (audio_present_history << 1) | (audio_present_now ? 1 : 0);
+	const bool audio_present = (audio_present_history != 0);
+	
+	if( audio_present ) {
+		i2s::i2s0::tx_unmute();
+	} else {
+		i2s::i2s0::tx_mute();
+		for(size_t i=0; i<audio.count; i++) {
+			audio.p[i] = 0;
+		}
+	}
+
+	fill_audio_buffer(audio);
+}
+
+void AudioOutput::fill_audio_buffer(const buffer_f32_t& audio) {
+	auto audio_buffer = audio::dma::tx_empty_buffer();
+	for(size_t i=0; i<audio_buffer.count; i++) {
+		const int32_t sample_int = audio.p[i];
+		const int32_t sample_saturated = __SSAT(sample_int, 16);
+		audio_buffer.p[i].left = audio_buffer.p[i].right = sample_saturated;
+	}
+
+	feed_audio_stats(audio);
+}
+
+void AudioOutput::feed_audio_stats(const buffer_f32_t& audio) {
+	audio_stats.feed(
+		audio,
+		[](const AudioStatistics& statistics) {
+			const AudioStatisticsMessage audio_stats_message { statistics };
+			shared_memory.application_queue.push(audio_stats_message);
+		}
+	);
+}

firmware/baseband-tx/audio_output.hpp

@@ -0,0 +1,58 @@
+/*
+ * 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 __AUDIO_OUTPUT_H__
+#define __AUDIO_OUTPUT_H__
+
+#include "dsp_types.hpp"
+
+#include "dsp_iir.hpp"
+#include "dsp_squelch.hpp"
+
+#include "audio_stats_collector.hpp"
+
+#include <cstdint>
+
+class AudioOutput {
+public:
+	void configure(
+		const iir_biquad_config_t& hpf_config,
+		const iir_biquad_config_t& deemph_config = iir_config_passthrough,
+		const float squelch_threshold = 0.0f
+	);
+
+	void write(const buffer_s16_t& audio);
+	void write(const buffer_f32_t& audio);
+
+private:
+	IIRBiquadFilter hpf;
+	IIRBiquadFilter deemph;
+	FMSquelch squelch;
+
+	AudioStatsCollector audio_stats;
+
+	uint64_t audio_present_history = 0;
+
+	void fill_audio_buffer(const buffer_f32_t& audio);
+	void feed_audio_stats(const buffer_f32_t& audio);
+};
+
+#endif/*__AUDIO_OUTPUT_H__*/

firmware/baseband-tx/audio_stats_collector.cpp

@@ -0,0 +1,67 @@
+/*
+ * 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 "audio_stats_collector.hpp"
+
+#include "utility.hpp"
+
+void AudioStatsCollector::consume_audio_buffer(const buffer_f32_t& src) {
+	auto src_p = src.p;
+	const auto src_end = &src.p[src.count];
+	while(src_p < src_end) {
+		const auto sample = *(src_p++);
+		const auto sample_squared = sample * sample;
+		squared_sum += sample_squared;
+		if( sample_squared > max_squared ) {
+			max_squared = sample_squared;
+		}
+	}
+}
+
+bool AudioStatsCollector::update_stats(const size_t sample_count, const size_t sampling_rate) {
+	count += sample_count;
+
+	const size_t samples_per_update = sampling_rate * update_interval;
+
+	if( count >= samples_per_update ) {
+		statistics.rms_db = complex16_mag_squared_to_dbv_norm(squared_sum / count);
+		statistics.max_db = complex16_mag_squared_to_dbv_norm(max_squared);
+		statistics.count = count;
+
+		squared_sum = 0;
+		max_squared = 0;
+		count = 0;
+
+		return true;
+	} else {
+		return false;
+	}
+}
+
+bool AudioStatsCollector::feed(const buffer_f32_t& src) {
+	consume_audio_buffer(src);
+
+	return update_stats(src.count, src.sampling_rate);
+}
+
+bool AudioStatsCollector::mute(const size_t sample_count, const size_t sampling_rate) {
+	return update_stats(sample_count, sampling_rate);
+}

firmware/baseband-tx/audio_stats_collector.hpp

@@ -22,9 +22,8 @@
 #ifndef __AUDIO_STATS_COLLECTOR_H__
 #define __AUDIO_STATS_COLLECTOR_H__
 
-#include "buffer.hpp"
+#include "dsp_types.hpp"
 #include "message.hpp"
-#include "utility.hpp"
 
 #include <cstdint>
 #include <cstddef>
@@ -32,64 +31,33 @@
 class AudioStatsCollector {
 public:
 	template<typename Callback>
-	void feed(buffer_s16_t src, Callback callback) {
-		consume_audio_buffer(src);
-
-		if( update_stats(src.count, src.sampling_rate) ) {
+	void feed(const buffer_f32_t& src, Callback callback) {
+		if( feed(src) ) {
 			callback(statistics);
 		}
 	}
 
 	template<typename Callback>
 	void mute(const size_t sample_count, const size_t sampling_rate, Callback callback) {
-		if( update_stats(sample_count, sampling_rate) ) {
+		if( mute(sample_count, sampling_rate) ) {
 			callback(statistics);
 		}
 	}
 
 private:
 	static constexpr float update_interval { 0.1f };
-	uint64_t squared_sum { 0 };
-	uint32_t max_squared { 0 };
+	float squared_sum { 0 };
+	float max_squared { 0 };
 	size_t count { 0 };
 
 	AudioStatistics statistics;
 
-	void consume_audio_buffer(buffer_s16_t src) {
-		auto src_p = src.p;
-		const auto src_end = &src.p[src.count];
-		while(src_p < src_end) {
-			const auto sample = *(src_p++);
-			const uint64_t sample_squared = sample * sample;
-			squared_sum += sample_squared;
-			if( sample_squared > max_squared ) {
-				max_squared = sample_squared;
-			}
-		}
-	}
+	void consume_audio_buffer(const buffer_f32_t& src);
 
-	bool update_stats(const size_t sample_count, const size_t sampling_rate) {
-		count += sample_count;
+	bool update_stats(const size_t sample_count, const size_t sampling_rate);
 
-		const size_t samples_per_update = sampling_rate * update_interval;
-
-		if( count >= samples_per_update ) {
-			const float squared_sum_f = squared_sum;
-			const float max_squared_f = max_squared;
-			const float squared_avg_f = squared_sum_f / count;
-			statistics.rms_db = complex16_mag_squared_to_dbv_norm(squared_avg_f);
-			statistics.max_db = complex16_mag_squared_to_dbv_norm(max_squared_f);
-			statistics.count = count;
-
-			squared_sum = 0;
-			max_squared = 0;
-			count = 0;
-
-			return true;
-		} else {
-			return false;
-		}
-	}
+	bool feed(const buffer_f32_t& src);
+	bool mute(const size_t sample_count, const size_t sampling_rate);
 };
 
 #endif/*__AUDIO_STATS_COLLECTOR_H__*/

firmware/baseband-tx/baseband_dma.cpp

@@ -20,7 +20,6 @@
  */
 
 #include "baseband_dma.hpp"
-#include "portapack_shared_memory.hpp"
 
 #include <cstdint>
 #include <cstddef>
@@ -35,8 +34,6 @@ using namespace lpc43xx;
 
 namespace baseband {
 namespace dma {
-	
-	int quitt = 0;
 
 constexpr uint32_t gpdma_ahb_master_sgpio = 0;
 constexpr uint32_t gpdma_ahb_master_memory = 1;
@@ -102,17 +99,12 @@ constexpr size_t msg_count = transfers_per_buffer - 1;
 static std::array<gpdma::channel::LLI, transfers_per_buffer> lli_loop;
 static constexpr auto& gpdma_channel_sgpio = gpdma::channels[portapack::sgpio_gpdma_channel_number];
 
-//static Mailbox mailbox;
-//static std::array<msg_t, msg_count> messages;
 static Semaphore semaphore;
 
 static volatile const gpdma::channel::LLI* next_lli = nullptr;
 
-void transfer_complete() {
+static void transfer_complete() {
 	next_lli = gpdma_channel_sgpio.next_lli();
-	quitt = 0;
-	/* TODO: Is Mailbox the proper synchronization mechanism for this? */
-	//chMBPostI(&mailbox, 0);
 	chSemSignalI(&semaphore);
 }
 
@@ -121,7 +113,6 @@ static void dma_error() {
 }
 
 void init() {
-	//chMBInit(&mailbox, messages.data(), messages.size());
 	chSemInit(&semaphore, 0);
 	gpdma_channel_sgpio.set_handlers(transfer_complete, dma_error);
 
@@ -148,7 +139,6 @@ void enable(const baseband::Direction direction) {
 	const auto gpdma_config = config(direction);
 	gpdma_channel_sgpio.configure(lli_loop[0], gpdma_config);
 
-	//chMBReset(&mailbox);
 	chSemReset(&semaphore, 0);
 
 	gpdma_channel_sgpio.enable();
@@ -159,14 +149,11 @@ bool is_enabled() {
 }
 
 void disable() {
-	gpdma_channel_sgpio.disable_force();
+	gpdma_channel_sgpio.disable();
 }
 
 baseband::buffer_t wait_for_rx_buffer() {
-	//msg_t msg;
-	//const auto status = chMBFetch(&mailbox, &msg, TIME_INFINITE);
 	const auto status = chSemWait(&semaphore);
-	if (quitt) return { nullptr, 0 };
 	if( status == RDY_OK ) {
 		const auto next = next_lli;
 		if( next ) {
@@ -174,28 +161,10 @@ baseband::buffer_t wait_for_rx_buffer() {
 			const size_t free_index = (next_index + transfers_per_buffer - 2) & transfers_mask;
 			return { reinterpret_cast<sample_t*>(lli_loop[free_index].destaddr), transfer_samples };
 		} else {
-			return { nullptr, 0 };
+			return { };
 		}
 	} else {
-		return { nullptr, 0 };
-	}
-}
-
-baseband::buffer_t wait_for_tx_buffer() {
-	//msg_t msg;
-	//const auto status = chMBFetch(&mailbox, &msg, TIME_INFINITE);
-	const auto status = chSemWait(&semaphore);
-	if( status == RDY_OK ) {
-		const auto next = next_lli;
-		if( next ) {
-			const size_t next_index = next - &lli_loop[0];
-			const size_t free_index = (next_index + transfers_per_buffer - 2) & transfers_mask;
-			return { reinterpret_cast<sample_t*>(lli_loop[free_index].srcaddr), transfer_samples };
-		} else {
-			return { nullptr, 0 };
-		}
-	} else {
-		return { nullptr, 0 };
+		return { };
 	}
 }
 

firmware/baseband-tx/baseband_processor.cpp

@@ -23,104 +23,14 @@
 
 #include "portapack_shared_memory.hpp"
 
-#include "dsp_fft.hpp"
-
-#include "audio_dma.hpp"
-
 #include "message.hpp"
-#include "event_m4.hpp"
-#include "utility.hpp"
 
-#include <cstddef>
-#include <algorithm>
-
-void BasebandProcessor::update_spectrum() {
-	// Called from idle thread (after EVT_MASK_SPECTRUM is flagged)
-	if( channel_spectrum_request_update ) {
-		/* Decimated buffer is full. Compute spectrum. */
-		channel_spectrum_request_update = false;
-		fft_c_preswapped(channel_spectrum);
-
-		ChannelSpectrumMessage spectrum_message;
-		for(size_t i=0; i<spectrum_message.spectrum.db.size(); i++) {
-			const auto mag2 = magnitude_squared(channel_spectrum[i]);
-			const float db = complex16_mag_squared_to_dbv_norm(mag2);
-			constexpr float mag_scale = 5.0f;
-			const unsigned int v = (db * mag_scale) + 255.0f;
-			spectrum_message.spectrum.db[i] = std::max(0U, std::min(255U, v));
-		}
-
-		/* TODO: Rename .db -> .magnitude, or something more (less!) accurate. */
-		spectrum_message.spectrum.db_count = spectrum_message.spectrum.db.size();
-		spectrum_message.spectrum.sampling_rate = channel_spectrum_sampling_rate;
-		spectrum_message.spectrum.channel_filter_pass_frequency = channel_filter_pass_frequency;
-		spectrum_message.spectrum.channel_filter_stop_frequency = channel_filter_stop_frequency;
-		shared_memory.application_queue.push(spectrum_message);
-	}
-}
-
-void BasebandProcessor::feed_channel_stats(const buffer_c16_t channel) {
+void BasebandProcessor::feed_channel_stats(const buffer_c16_t& channel) {
 	channel_stats.feed(
 		channel,
-		[this](const ChannelStatistics statistics) {
-			this->post_channel_stats_message(statistics);
+		[](const ChannelStatistics& statistics) {
+			const ChannelStatisticsMessage channel_stats_message { statistics };
+			shared_memory.application_queue.push(channel_stats_message);
 		}
 	);
 }
-
-void BasebandProcessor::feed_channel_spectrum(
-	const buffer_c16_t channel,
-	const uint32_t filter_pass_frequency,
-	const uint32_t filter_stop_frequency
-) {
-	channel_filter_pass_frequency = filter_pass_frequency;
-	channel_filter_stop_frequency = filter_stop_frequency;
-	channel_spectrum_decimator.feed(
-		channel,
-		[this](const buffer_c16_t data) {
-			this->post_channel_spectrum_message(data);
-		}
-	);
-}
-
-void BasebandProcessor::fill_audio_buffer(const buffer_s16_t audio) {
-	auto audio_buffer = audio::dma::tx_empty_buffer();;
-	for(size_t i=0; i<audio_buffer.count; i++) {
-		audio_buffer.p[i].left = audio_buffer.p[i].right = audio.p[i];
-	}
-	i2s::i2s0::tx_unmute();
-
-	feed_audio_stats(audio);
-}
-
-void BasebandProcessor::post_channel_stats_message(const ChannelStatistics statistics) {
-	channel_stats_message.statistics = statistics;
-	shared_memory.application_queue.push(channel_stats_message);
-}
-
-void BasebandProcessor::post_channel_spectrum_message(const buffer_c16_t data) {
-	if( !channel_spectrum_request_update ) {
-		fft_swap(data, channel_spectrum);
-		channel_spectrum_sampling_rate = data.sampling_rate;
-		channel_spectrum_request_update = true;
-		events_flag(EVT_MASK_SPECTRUM);
-	}
-}
-
-void BasebandProcessor::feed_audio_stats(const buffer_s16_t audio) {
-	audio_stats.feed(
-		audio,
-		[this](const AudioStatistics statistics) {
-			this->post_audio_stats_message(statistics);
-		}
-	);
-}
-
-void BasebandProcessor::post_audio_stats_message(const AudioStatistics statistics) {
-	audio_stats_message.statistics = statistics;
-	shared_memory.application_queue.push(audio_stats_message);
-}
-
-void BasebandProcessor::fill_buffer(int8_t * inptr) {
-	(void)inptr;
-}

firmware/baseband-tx/baseband_processor.hpp

@@ -23,55 +23,24 @@
 #define __BASEBAND_PROCESSOR_H__
 
 #include "dsp_types.hpp"
-#include "complex.hpp"
 
-#include "block_decimator.hpp"
 #include "channel_stats_collector.hpp"
-#include "audio_stats_collector.hpp"
 
-#include <array>
-#include <cstdint>
-#include <complex>
+#include "message.hpp"
 
 class BasebandProcessor {
 public:
 	virtual ~BasebandProcessor() = default;
 
-	virtual void execute(buffer_c8_t buffer) = 0;
-	virtual void fill_buffer(int8_t * inptr);
+	virtual void execute(const buffer_c8_t& buffer) = 0;
 
-	void update_spectrum();
+	virtual void on_message(const Message* const) { };
 
 protected:
-	void feed_channel_stats(const buffer_c16_t channel);
-
-	void feed_channel_spectrum(
-		const buffer_c16_t channel,
-		const uint32_t filter_pass_frequency,
-		const uint32_t filter_stop_frequency
-	);
-
-	void fill_audio_buffer(const buffer_s16_t audio);
-
-	volatile bool channel_spectrum_request_update { false };
-	std::array<std::complex<float>, 256> channel_spectrum;
-	uint32_t channel_spectrum_sampling_rate { 0 };
-	uint32_t channel_filter_pass_frequency { 0 };
-	uint32_t channel_filter_stop_frequency { 0 };
+	void feed_channel_stats(const buffer_c16_t& channel);
 
 private:
-	BlockDecimator<256> channel_spectrum_decimator { 4 };
-
 	ChannelStatsCollector channel_stats;
-	ChannelStatisticsMessage channel_stats_message;
-
-	AudioStatsCollector audio_stats;
-	AudioStatisticsMessage audio_stats_message;
-
-	void post_channel_stats_message(const ChannelStatistics statistics);
-	void post_channel_spectrum_message(const buffer_c16_t data);
-	void feed_audio_stats(const buffer_s16_t audio);
-	void post_audio_stats_message(const AudioStatistics statistics);
 };
 
 #endif/*__BASEBAND_PROCESSOR_H__*/

firmware/baseband-tx/baseband_stats_collector.cpp

@@ -0,0 +1,59 @@
+/*
+ * 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 "baseband_stats_collector.hpp"
+
+#include "lpc43xx_cpp.hpp"
+
+bool BasebandStatsCollector::process(const buffer_c8_t& buffer) {
+	samples += buffer.count;
+
+	const size_t report_samples = buffer.sampling_rate * report_interval;
+	const auto report_delta = samples - samples_last_report;
+	return report_delta >= report_samples;
+}
+
+BasebandStatistics BasebandStatsCollector::capture_statistics() {
+	BasebandStatistics statistics;
+
+	const auto idle_ticks = thread_idle->total_ticks;
+	statistics.idle_ticks = (idle_ticks - last_idle_ticks);
+	last_idle_ticks = idle_ticks;
+
+	const auto main_ticks = thread_main->total_ticks;
+	statistics.main_ticks = (main_ticks - last_main_ticks);
+	last_main_ticks = main_ticks;
+
+	const auto rssi_ticks = thread_rssi->total_ticks;
+	statistics.rssi_ticks = (rssi_ticks - last_rssi_ticks);
+	last_rssi_ticks = rssi_ticks;
+
+	const auto baseband_ticks = thread_baseband->total_ticks;
+	statistics.baseband_ticks = (baseband_ticks - last_baseband_ticks);
+	last_baseband_ticks = baseband_ticks;
+
+	statistics.saturation = lpc43xx::m4::flag_saturation();
+	lpc43xx::m4::clear_flag_saturation();
+
+	samples_last_report = samples;
+
+	return statistics;
+}

firmware/baseband-tx/baseband_stats_collector.hpp

@@ -26,7 +26,6 @@
 
 #include "dsp_types.hpp"
 #include "message.hpp"
-#include "utility_m4.hpp"
 
 #include <cstdint>
 #include <cstddef>
@@ -46,36 +45,9 @@ public:
 	}
 
 	template<typename Callback>
-	void process(buffer_c8_t buffer, Callback callback) {
-		samples += buffer.count;
-
-		const size_t report_samples = buffer.sampling_rate * report_interval;
-		const auto report_delta = samples - samples_last_report;
-		if( report_delta >= report_samples ) {
-			BasebandStatistics statistics;
-
-			const auto idle_ticks = thread_idle->total_ticks;
-			statistics.idle_ticks = (idle_ticks - last_idle_ticks);
-			last_idle_ticks = idle_ticks;
-
-			const auto main_ticks = thread_main->total_ticks;
-			statistics.main_ticks = (main_ticks - last_main_ticks);
-			last_main_ticks = main_ticks;
-
-			const auto rssi_ticks = thread_rssi->total_ticks;
-			statistics.rssi_ticks = (rssi_ticks - last_rssi_ticks);
-			last_rssi_ticks = rssi_ticks;
-
-			const auto baseband_ticks = thread_baseband->total_ticks;
-			statistics.baseband_ticks = (baseband_ticks - last_baseband_ticks);
-			last_baseband_ticks = baseband_ticks;
-
-			statistics.saturation = m4_flag_saturation();
-			clear_m4_flag_saturation();
-
-			callback(statistics);
-
-			samples_last_report = samples;
+	void process(const buffer_c8_t& buffer, Callback callback) {
+		if( process(buffer) ) {
+			callback(capture_statistics());
 		}
 	}
 
@@ -91,6 +63,9 @@ private:
 	uint32_t last_rssi_ticks { 0 };
 	const Thread* const thread_baseband;
 	uint32_t last_baseband_ticks { 0 };
+
+	bool process(const buffer_c8_t& buffer);
+	BasebandStatistics capture_statistics();
 };
 
 #endif/*__BASEBAND_STATS_COLLECTOR_H__*/

firmware/baseband-tx/baseband_thread.cpp

@@ -0,0 +1,155 @@
+/*
+ * 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 "baseband_thread.hpp"
+
+#include "dsp_types.hpp"
+
+#include "baseband.hpp"
+#include "baseband_stats_collector.hpp"
+#include "baseband_sgpio.hpp"
+#include "baseband_dma.hpp"
+
+#include "rssi.hpp"
+#include "i2s.hpp"
+
+#include "proc_xylos.hpp"
+#include "proc_fsk_lcr.hpp"
+#include "proc_jammer.hpp"
+#include "proc_rds.hpp"
+#include "proc_playaudio.hpp"
+
+#include "portapack_shared_memory.hpp"
+
+#include <array>
+
+static baseband::SGPIO baseband_sgpio;
+
+WORKING_AREA(baseband_thread_wa, 4096);
+
+Thread* BasebandThread::start(const tprio_t priority) {
+	return chThdCreateStatic(baseband_thread_wa, sizeof(baseband_thread_wa),
+		priority, ThreadBase::fn,
+		this
+	);
+}
+
+void BasebandThread::set_configuration(const BasebandConfiguration& new_configuration) {
+	if( new_configuration.mode != baseband_configuration.mode ) {
+		disable();
+
+		// TODO: Timing problem around disabling DMA and nulling and deleting old processor
+		auto old_p = baseband_processor;
+		baseband_processor = nullptr;
+		delete old_p;
+
+		baseband_processor = create_processor(new_configuration.mode);
+
+		enable();
+	}
+
+	baseband_configuration = new_configuration;
+}
+
+void BasebandThread::on_message(const Message* const message) {
+	if( message->id == Message::ID::BasebandConfiguration ) {
+		set_configuration(reinterpret_cast<const BasebandConfigurationMessage*>(message)->configuration);
+	} else {
+		if( baseband_processor ) {
+			baseband_processor->on_message(message);
+		}
+	}
+}
+
+void BasebandThread::run() {
+	baseband_sgpio.init();
+	baseband::dma::init();
+
+	const auto baseband_buffer = new std::array<baseband::sample_t, 8192>();
+	baseband::dma::configure(
+		baseband_buffer->data(),
+		direction()
+	);
+	//baseband::dma::allocate(4, 2048);
+
+	BasebandStatsCollector stats {
+		chSysGetIdleThread(),
+		thread_main,
+		thread_rssi,
+		chThdSelf()
+	};
+
+	while(true) {
+		// TODO: Place correct sampling rate into buffer returned here:
+		const auto buffer_tmp = baseband::dma::wait_for_rx_buffer();
+		if( buffer_tmp ) {
+			buffer_c8_t buffer {
+				buffer_tmp.p, buffer_tmp.count, baseband_configuration.sampling_rate
+			};
+
+			if( baseband_processor ) {
+				baseband_processor->execute(buffer);
+			}
+
+			stats.process(buffer,
+				[](const BasebandStatistics& statistics) {
+					const BasebandStatisticsMessage message { statistics };
+					shared_memory.application_queue.push(message);
+				}
+			);
+		}
+	}
+
+	delete baseband_buffer;
+}
+
+BasebandProcessor* BasebandThread::create_processor(const int32_t mode) {
+	switch(mode) {
+	case 0:		return new RDSProcessor();
+	case 1:		return new LCRFSKProcessor();
+	case 2:		return nullptr; //new ToneProcessor();
+	case 3:		return new JammerProcessor();
+	case 4:		return new XylosProcessor();
+	case 5:		return new PlayAudioProcessor();
+	case 6:		return nullptr; //new AFSKRXProcessor();
+	default:	return nullptr;
+	}
+}
+
+void BasebandThread::disable() {
+	if( baseband_processor ) {
+		i2s::i2s0::tx_mute();
+		baseband::dma::disable();
+		baseband_sgpio.streaming_disable();
+		rf::rssi::stop();
+	}
+}
+
+void BasebandThread::enable() {
+	if( baseband_processor ) {
+		if( direction() == baseband::Direction::Receive ) {
+			rf::rssi::start();
+		}
+		baseband_sgpio.configure(direction());
+		baseband::dma::enable(direction());
+		baseband_sgpio.streaming_enable();
+	}
+}

firmware/baseband-tx/baseband_thread.hpp

@@ -0,0 +1,65 @@
+/*
+ * 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 __BASEBAND_THREAD_H__
+#define __BASEBAND_THREAD_H__
+
+#include "thread_base.hpp"
+#include "message.hpp"
+#include "baseband_processor.hpp"
+
+#include <ch.h>
+
+class BasebandThread : public ThreadBase {
+public:
+	BasebandThread(
+	) : ThreadBase { "baseband" }
+	{
+	}
+
+	Thread* start(const tprio_t priority);
+
+	void on_message(const Message* const message);
+	
+	// This getter should die, it's just here to leak information to code that
+	// isn't in the right place to begin with.
+	baseband::Direction direction() const {
+		return baseband::Direction::Receive;
+	}
+
+	Thread* thread_main { nullptr };
+	Thread* thread_rssi { nullptr };
+	BasebandProcessor* baseband_processor { nullptr };
+
+private:
+	BasebandConfiguration baseband_configuration;
+
+	void run() override;
+
+	BasebandProcessor* create_processor(const int32_t mode);
+
+	void disable();
+	void enable();
+
+	void set_configuration(const BasebandConfiguration& new_configuration);
+};
+
+#endif/*__BASEBAND_THREAD_H__*/

firmware/baseband-tx/description

@@ -1 +1 @@
-More specific stuff for testing :o
+More or less experimental stuff, mainly TX.

firmware/baseband-tx/dsp_iir.cpp

@@ -0,0 +1,57 @@
+/*
+ * 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 "dsp_iir.hpp"
+
+#include <hal.h>
+
+void IIRBiquadFilter::configure(const iir_biquad_config_t& new_config) {
+	config = new_config;
+}
+
+void IIRBiquadFilter::execute(const buffer_f32_t& buffer_in, const buffer_f32_t& buffer_out) {
+	const auto a_ = config.a;
+	const auto b_ = config.b;
+	
+	auto x_ = x;
+	auto y_ = y;
+
+	// TODO: Assert that buffer_out.count == buffer_in.count.
+	for(size_t i=0; i<buffer_out.count; i++) {
+		x_[0] = x_[1];
+		x_[1] = x_[2];
+		x_[2] = buffer_in.p[i];
+
+		y_[0] = y_[1];
+		y_[1] = y_[2];
+		y_[2] = b_[0] * x_[2] + b_[1] * x_[1] + b_[2] * x_[0]
+		                      - a_[1] * y_[1] - a_[2] * y_[0];
+
+		buffer_out.p[i] = y_[2];
+	}
+
+	x = x_;
+	y = y_;
+}
+
+void IIRBiquadFilter::execute_in_place(const buffer_f32_t& buffer) {
+	execute(buffer, buffer);
+}

firmware/baseband-tx/dsp_iir.hpp

@@ -27,13 +27,27 @@
 #include "dsp_types.hpp"
 
 struct iir_biquad_config_t {
-	const std::array<float, 3> b;
-	const std::array<float, 3> a;
+	std::array<float, 3> b;
+	std::array<float, 3> a;
+};
+
+constexpr iir_biquad_config_t iir_config_passthrough {
+	{ { 1.0f, 0.0f, 0.0f } },
+	{ { 0.0f, 0.0f, 0.0f } },
+};
+
+constexpr iir_biquad_config_t iir_config_no_pass {
+	{ { 0.0f, 0.0f, 0.0f } },
+	{ { 0.0f, 0.0f, 0.0f } },
 };
 
 class IIRBiquadFilter {
 public:
 	// http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt
+	constexpr IIRBiquadFilter(
+	) : IIRBiquadFilter(iir_config_no_pass)
+	{
+	}
 
 	// Assume all coefficients are normalized so that a0=1.0
 	constexpr IIRBiquadFilter(
@@ -42,34 +56,15 @@ public:
 	{
 	}
 
-	void execute(buffer_s16_t buffer_in, buffer_s16_t buffer_out) {
-		// TODO: Assert that buffer_out.count == buffer_in.count.
-		for(size_t i=0; i<buffer_out.count; i++) {
-			buffer_out.p[i] = execute_sample(buffer_in.p[i]);
-		}
-	}
+	void configure(const iir_biquad_config_t& new_config);
 
-	void execute_in_place(buffer_s16_t buffer) {
-		execute(buffer, buffer);
-	}
+	void execute(const buffer_f32_t& buffer_in, const buffer_f32_t& buffer_out);
+	void execute_in_place(const buffer_f32_t& buffer);
 
 private:
-	const iir_biquad_config_t config;
+	iir_biquad_config_t config;
 	std::array<float, 3> x { { 0.0f, 0.0f, 0.0f } };
 	std::array<float, 3> y { { 0.0f, 0.0f, 0.0f } };
-
-	float execute_sample(const float in) {
-		x[0] = x[1];
-		x[1] = x[2];
-		x[2] = in;
-
-		y[0] = y[1];
-		y[1] = y[2];
-		y[2] = config.b[0] * x[2] + config.b[1] * x[1] + config.b[2] * x[0]
-		                          - config.a[1] * y[1] - config.a[2] * y[0];
-
-		return y[2];
-	}
 };
 
 #endif/*__DSP_IIR_H__*/

firmware/baseband-tx/dsp_squelch.cpp

@@ -24,22 +24,30 @@
 #include <cstdint>
 #include <array>
 
-bool FMSquelch::execute(buffer_s16_t audio) {
+bool FMSquelch::execute(const buffer_f32_t& audio) {
+	if( threshold_squared == 0.0f ) {
+		return true;
+	}
+
 	// TODO: No hard-coded array size.
-	std::array<int16_t, N> squelch_energy_buffer;
-	const buffer_s16_t squelch_energy {
+	std::array<float, N> squelch_energy_buffer;
+	const buffer_f32_t squelch_energy {
 		squelch_energy_buffer.data(),
 		squelch_energy_buffer.size()
 	};
 	non_audio_hpf.execute(audio, squelch_energy);
 
-	uint64_t max_squared = 0;
+	float non_audio_max_squared = 0;
 	for(const auto sample : squelch_energy_buffer) {
-		const uint64_t sample_squared = sample * sample;
-		if( sample_squared > max_squared ) {
-			max_squared = sample_squared;
+		const float sample_squared = sample * sample;
+		if( sample_squared > non_audio_max_squared ) {
+			non_audio_max_squared = sample_squared;
 		}
 	}
 
-	return (max_squared < (threshold * threshold));
+	return (non_audio_max_squared < threshold_squared);
+}
+
+void FMSquelch::set_threshold(const float new_value) {
+	threshold_squared = new_value * new_value;
 }

firmware/baseband-tx/dsp_squelch.hpp

@@ -31,14 +31,14 @@
 
 class FMSquelch {
 public:
-	bool execute(buffer_s16_t audio);
+	bool execute(const buffer_f32_t& audio);
+
+	void set_threshold(const float new_value);
 
 private:
 	static constexpr size_t N = 32;
-	static constexpr int16_t threshold = 3072;
+	float threshold_squared { 0.0f };
 
-	// nyquist = 48000 / 2.0
-	// scipy.signal.iirdesign(wp=8000 / nyquist, ws= 4000 / nyquist, gpass=1, gstop=18, ftype='ellip')
 	IIRBiquadFilter non_audio_hpf { non_audio_hpf_config };
 };
 

firmware/baseband-tx/event_m4.cpp

@@ -21,10 +21,99 @@
 
 #include "event_m4.hpp"
 
+#include "portapack_shared_memory.hpp"
+
+#include "message_queue.hpp"
+
 #include "ch.h"
 
-Thread* thread_event_loop = nullptr;
+#include "lpc43xx_cpp.hpp"
+using namespace lpc43xx;
 
-void events_initialize(Thread* const event_loop_thread) {
-	thread_event_loop = event_loop_thread;
+#include <cstdint>
+#include <array>
+
+extern "C" {
+
+CH_IRQ_HANDLER(MAPP_IRQHandler) {
+	CH_IRQ_PROLOGUE();
+
+	chSysLockFromIsr();
+	EventDispatcher::events_flag_isr(EVT_MASK_BASEBAND);
+	chSysUnlockFromIsr();
+
+	creg::m0apptxevent::clear();
+
+	CH_IRQ_EPILOGUE();
+}
+
+}
+
+Thread* EventDispatcher::thread_event_loop = nullptr;
+
+void EventDispatcher::run() {
+	thread_event_loop = chThdSelf();
+	lpc43xx::creg::m0apptxevent::enable();
+
+	baseband_thread.thread_main = chThdSelf();
+	baseband_thread.thread_rssi = rssi_thread.start(NORMALPRIO + 10);
+	baseband_thread.start(NORMALPRIO + 20);
+
+	while(is_running) {
+		const auto events = wait();
+		dispatch(events);
+	}
+
+	lpc43xx::creg::m0apptxevent::disable();
+}
+
+void EventDispatcher::request_stop() {
+	is_running = false;
+}
+
+eventmask_t EventDispatcher::wait() {
+	return chEvtWaitAny(ALL_EVENTS);
+}
+
+void EventDispatcher::dispatch(const eventmask_t events) {
+	if( events & EVT_MASK_BASEBAND ) {
+		handle_baseband_queue();
+	}
+
+	if( events & EVT_MASK_SPECTRUM ) {
+		handle_spectrum();
+	}
+}
+
+void EventDispatcher::handle_baseband_queue() {
+	std::array<uint8_t, Message::MAX_SIZE> message_buffer;
+	while(Message* const message = shared_memory.baseband_queue.peek(message_buffer)) {
+		on_message(message);
+		shared_memory.baseband_queue.skip();
+	}
+}
+
+void EventDispatcher::on_message(const Message* const message) {
+	switch(message->id) {
+	case Message::ID::Shutdown:
+		on_message_shutdown(*reinterpret_cast<const ShutdownMessage*>(message));
+		break;
+
+	default:
+		on_message_default(message);
+		break;
+	}
+}
+
+void EventDispatcher::on_message_shutdown(const ShutdownMessage&) {
+	request_stop();
+}
+
+void EventDispatcher::on_message_default(const Message* const message) {
+	baseband_thread.on_message(message);
+}
+
+void EventDispatcher::handle_spectrum() {
+	const UpdateSpectrumMessage message;
+	baseband_thread.on_message(&message);
 }

firmware/baseband-tx/event_m4.hpp

@@ -22,25 +22,54 @@
 #ifndef __EVENT_M4_H__
 #define __EVENT_M4_H__
 
+#include "event.hpp"
+
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
+
+#include "message.hpp"
+
 #include "ch.h"
 
 constexpr auto EVT_MASK_BASEBAND = EVENT_MASK(0);
 constexpr auto EVT_MASK_SPECTRUM = EVENT_MASK(1);
 
-void events_initialize(Thread* const event_loop_thread);
+class EventDispatcher {
+public:
+	void run();
+	void request_stop();
 
-extern Thread* thread_event_loop;
-
-inline void events_flag(const eventmask_t events) {
-	if( thread_event_loop ) {
-		chEvtSignal(thread_event_loop, events);
+	static inline void events_flag(const eventmask_t events) {
+		if( thread_event_loop ) {
+			chEvtSignal(thread_event_loop, events);
+		}
 	}
-}
 
-inline void events_flag_isr(const eventmask_t events) {
-	if( thread_event_loop ) {
-		chEvtSignalI(thread_event_loop, events);
+	static inline void events_flag_isr(const eventmask_t events) {
+		if( thread_event_loop ) {
+			chEvtSignalI(thread_event_loop, events);
+		}
 	}
-}
+
+private:
+	static Thread* thread_event_loop;
+
+	BasebandThread baseband_thread;
+	RSSIThread rssi_thread;
+
+	bool is_running = true;
+
+	eventmask_t wait();
+
+	void dispatch(const eventmask_t events);
+
+	void handle_baseband_queue();
+
+	void on_message(const Message* const message);
+	void on_message_shutdown(const ShutdownMessage&);
+	void on_message_default(const Message* const message);
+
+	void handle_spectrum();
+};
 
 #endif/*__EVENT_M4_H__*/

firmware/baseband-tx/main.cpp

@@ -15,13 +15,11 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; see the file COPYING.  If not, write to
- * 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 "ch.h"
-#include "test.h"
 
 #include "lpc43xx_cpp.hpp"
 
@@ -30,34 +28,13 @@
 
 #include "gpdma.hpp"
 
-#include "baseband.hpp"
-#include "baseband_dma.hpp"
-
 #include "event_m4.hpp"
 
-#include "irq_ipc_m4.hpp"
-
 #include "touch_dma.hpp"
 
-#include "modules.h"
-
-#include "dsp_decimate.hpp"
-#include "dsp_demodulate.hpp"
-#include "dsp_fft.hpp"
-#include "dsp_fir_taps.hpp"
-#include "dsp_iir.hpp"
-#include "dsp_iir_config.hpp"
-#include "dsp_squelch.hpp"
-
-#include "channel_decimator.hpp"
+#include "baseband_thread.hpp"
+#include "rssi_thread.hpp"
 #include "baseband_processor.hpp"
-#include "proc_fsk_lcr.hpp"
-#include "proc_jammer.hpp"
-#include "proc_xylos.hpp"
-#include "proc_playaudio.hpp"
-
-#include "clock_recovery.hpp"
-#include "packet_builder.hpp"
 
 #include "message_queue.hpp"
 
@@ -73,55 +50,87 @@
 #include <cstdint>
 #include <cstddef>
 #include <array>
-#include <string>
-#include <bitset>
-#include <math.h>
 
-static baseband::Direction direction = baseband::Direction::Receive;
+extern "C" {
 
-class ThreadBase {
-public:
-	constexpr ThreadBase(
-		const char* const name
-	) : name { name }
-	{
+void __late_init(void) {
+	/*
+	 * System initializations.
+	 * - HAL initialization, this also initializes the configured device drivers
+	 *   and performs the board-specific initializations.
+	 * - Kernel initialization, the main() function becomes a thread and the
+	 *   RTOS is active.
+	 */
+	halInit();
+
+	/* After this call, scheduler, systick, heap, etc. are available. */
+	/* By doing chSysInit() here, it runs before C++ constructors, which may
+	 * require the heap.
+	 */
+	chSysInit();
+}
+
+}
+
+static void init() {
+	i2s::i2s0::configure(
+		audio::i2s0_config_tx,
+		audio::i2s0_config_rx,
+		audio::i2s0_config_dma
+	);
+
+	audio::dma::init();
+	audio::dma::configure();
+	audio::dma::enable();
+
+	i2s::i2s0::tx_start();
+	i2s::i2s0::rx_start();
+
+	LPC_CREG->DMAMUX = portapack::gpdma_mux;
+	gpdma::controller.enable();
+	nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
+
+	touch::dma::init();
+	touch::dma::allocate();
+	touch::dma::enable();
+}
+
+static void halt() {
+	port_disable();
+	while(true) {
+		port_wait_for_interrupt();
 	}
+}
 
-	static msg_t fn(void* arg) {
-		auto obj = static_cast<ThreadBase*>(arg);
-		chRegSetThreadName(obj->name);
-		obj->run();
+static void shutdown() {
+	// TODO: Is this complete?
+	
+	nvicDisableVector(DMA_IRQn);
+	
+	chSysDisable();
 
-		return 0;
-	}
+	systick_stop();
 
-	virtual void run() = 0;
+	ShutdownMessage shutdown_message;
+	shared_memory.application_queue.push(shutdown_message);
 
-private:
-	const char* const name;
-};
+	halt();
+}
 
-class BasebandThread : public ThreadBase {
-public:
-	BasebandThread(
-	) : ThreadBase { "baseband" }
-	{
-	}
+int main(void) {
+	init();
 
-	Thread* start(const tprio_t priority) {
-		return chThdCreateStatic(wa, sizeof(wa),
-			priority, ThreadBase::fn,
-			this
-		);
-	}
+	/* TODO: Ensure DMAs are configured to point at first LLI in chain. */
 
-	Thread* thread_main { nullptr };
-	BasebandProcessor* baseband_processor { nullptr };
-	BasebandConfiguration baseband_configuration;
+	EventDispatcher event_dispatcher;
+	event_dispatcher.run();
 
-private:
-	WORKING_AREA(wa, 2048);
+	shutdown();
 
+	return 0;
+}
+
+/*
 	void run() override {
 		while(true) {
 			if (direction == baseband::Direction::Transmit) {
@@ -149,167 +158,6 @@ private:
 	}
 };
 
-#define SAMPLES_PER_BIT 192
-#define FILTER_SIZE 576
-#define SAMPLE_BUFFER_SIZE SAMPLES_PER_BIT + FILTER_SIZE
-
-static int32_t waveform_biphase[] = {
-	165,167,168,168,167,166,163,160,
-	157,152,147,141,134,126,118,109,
-	99,88,77,66,53,41,27,14,
-	0,-14,-29,-44,-59,-74,-89,-105,
-	-120,-135,-150,-165,-179,-193,-206,-218,
-	-231,-242,-252,-262,-271,-279,-286,-291,
-	-296,-299,-301,-302,-302,-300,-297,-292,
-	-286,-278,-269,-259,-247,-233,-219,-202,
-	-185,-166,-145,-124,-101,-77,-52,-26,
-	0,27,56,85,114,144,175,205,
-	236,266,296,326,356,384,412,439,
-	465,490,513,535,555,574,590,604,
-	616,626,633,637,639,638,633,626,
-	616,602,586,565,542,515,485,451,
-	414,373,329,282,232,178,121,62,
-	0,-65,-132,-202,-274,-347,-423,-500,
-	-578,-656,-736,-815,-894,-973,-1051,-1128,
-	-1203,-1276,-1347,-1415,-1479,-1540,-1596,-1648,
-	-1695,-1736,-1771,-1799,-1820,-1833,-1838,-1835,
-	-1822,-1800,-1767,-1724,-1670,-1605,-1527,-1437,
-	-1334,-1217,-1087,-943,-785,-611,-423,-219,
-	0,235,487,755,1040,1341,1659,1994,
-	2346,2715,3101,3504,3923,4359,4811,5280,
-	5764,6264,6780,7310,7856,8415,8987,9573,
-	10172,10782,11404,12036,12678,13329,13989,14656,
-	15330,16009,16694,17382,18074,18767,19461,20155,
-	20848,21539,22226,22909,23586,24256,24918,25571,
-	26214,26845,27464,28068,28658,29231,29787,30325,
-	30842,31339,31814,32266,32694,33097,33473,33823,
-	34144,34437,34699,34931,35131,35299,35434,35535,
-	35602,35634,35630,35591,35515,35402,35252,35065,
-	34841,34579,34279,33941,33566,33153,32702,32214,
-	31689,31128,30530,29897,29228,28525,27788,27017,
-	26214,25379,24513,23617,22693,21740,20761,19755,
-	18725,17672,16597,15501,14385,13251,12101,10935,
-	9755,8563,7360,6148,4927,3701,2470,1235,
-	0,-1235,-2470,-3701,-4927,-6148,-7360,-8563,
-	-9755,-10935,-12101,-13251,-14385,-15501,-16597,-17672,
-	-18725,-19755,-20761,-21740,-22693,-23617,-24513,-25379,
-	-26214,-27017,-27788,-28525,-29228,-29897,-30530,-31128,
-	-31689,-32214,-32702,-33153,-33566,-33941,-34279,-34579,
-	-34841,-35065,-35252,-35402,-35515,-35591,-35630,-35634,
-	-35602,-35535,-35434,-35299,-35131,-34931,-34699,-34437,
-	-34144,-33823,-33473,-33097,-32694,-32266,-31814,-31339,
-	-30842,-30325,-29787,-29231,-28658,-28068,-27464,-26845,
-	-26214,-25571,-24918,-24256,-23586,-22909,-22226,-21539,
-	-20848,-20155,-19461,-18767,-18074,-17382,-16694,-16009,
-	-15330,-14656,-13989,-13329,-12678,-12036,-11404,-10782,
-	-10172,-9573,-8987,-8415,-7856,-7310,-6780,-6264,
-	-5764,-5280,-4811,-4359,-3923,-3504,-3101,-2715,
-	-2346,-1994,-1659,-1341,-1040,-755,-487,-235,
-	0,219,423,611,785,943,1087,1217,
-	1334,1437,1527,1605,1670,1724,1767,1800,
-	1822,1835,1838,1833,1820,1799,1771,1736,
-	1695,1648,1596,1540,1479,1415,1347,1276,
-	1203,1128,1051,973,894,815,736,656,
-	578,500,423,347,274,202,132,65,
-	0,-62,-121,-178,-232,-282,-329,-373,
-	-414,-451,-485,-515,-542,-565,-586,-602,
-	-616,-626,-633,-638,-639,-637,-633,-626,
-	-616,-604,-590,-574,-555,-535,-513,-490,
-	-465,-439,-412,-384,-356,-326,-296,-266,
-	-236,-205,-175,-144,-114,-85,-56,-27,
-	0,26,52,77,101,124,145,166,
-	185,202,219,233,247,259,269,278,
-	286,292,297,300,302,302,301,299,
-	296,291,286,279,271,262,252,242,
-	231,218,206,193,179,165,150,135,
-	120,105,89,74,59,44,29,14,
-	0,-14,-27,-41,-53,-66,-77,-88,
-	-99,-109,-118,-126,-134,-141,-147,-152,
-	-157,-160,-163,-166,-167,-168,-168,-167
-};
-
-class RDSProcessor : public BasebandProcessor {
-public:
-	void execute(buffer_c8_t buffer) override {
-        
-		for (size_t i = 0; i<buffer.count; i++) {
-			
-			//Sample generation 2.28M/10=228kHz
-			if(s >= 9) {
-				s = 0;
-				if(sample_count >= SAMPLES_PER_BIT) {
-					cur_bit = (shared_memory.rdsdata[(bit_pos / 26) & 15]>>(25-(bit_pos % 26))) & 1;
-					prev_output = cur_output;
-					cur_output = prev_output ^ cur_bit;
-
-					int32_t *src = waveform_biphase;
-					int idx = in_sample_index;
-
-					for(int j=0; j<FILTER_SIZE; j++) {
-						val = (*src++);
-						if (cur_output) val = -val;
-						sample_buffer[idx++] += val;
-						if (idx >= SAMPLE_BUFFER_SIZE) idx = 0;
-					}
-
-					in_sample_index += SAMPLES_PER_BIT;
-					if (in_sample_index >= SAMPLE_BUFFER_SIZE) in_sample_index -= SAMPLE_BUFFER_SIZE;
-					
-					bit_pos++;
-					sample_count = 0;
-				}
-				
-				sample = sample_buffer[out_sample_index];
-				sample_buffer[out_sample_index] = 0;
-				out_sample_index++;
-				if (out_sample_index >= SAMPLE_BUFFER_SIZE) out_sample_index = 0;
-				
-				//AM @ 228k/4=57kHz
-				switch (mphase) {
-					case 0:
-					case 2: sample = 0; break;
-					case 1: break;
-					case 3: sample = -sample; break;
-				}
-				mphase++;
-				if (mphase >= 4) mphase = 0;
-				
-				sample_count++;
-			} else {
-				s++;
-			}
-			
-			//FM
-			frq = (sample>>16) * 386760;
-			
-			phase = (phase + frq);
-			sphase = phase + (256<<16);
-
-			//re = sintab[(sphase & 0x03FF0000)>>16];
-			//im = sintab[(phase & 0x03FF0000)>>16];
-			
-			buffer.p[i] = {(int8_t)re,(int8_t)im};
-		}
-	}
-
-private:
-	int8_t re, im;
-	uint8_t mphase, s;
-    uint32_t bit_pos;
-    int32_t sample_buffer[SAMPLE_BUFFER_SIZE] = {0};
-    int32_t val;
-    uint8_t prev_output = 0;
-    uint8_t cur_output = 0;
-    uint8_t cur_bit = 0;
-    int sample_count = SAMPLES_PER_BIT;
-    int in_sample_index = 0;
-    int32_t sample;
-    int out_sample_index = SAMPLE_BUFFER_SIZE-1;
-	uint32_t phase, sphase;
-	int32_t sig, frq, frq_im, rdsc;
-	int32_t k;
-};
-
 class ToneProcessor : public BasebandProcessor {
 public:
 	void execute(buffer_c8_t buffer) override {
@@ -348,130 +196,6 @@ private:
 	int32_t sample, sig, frq;
 };
 
-extern "C" {
-
-void __late_init(void) {
-	/*
-	 * System initializations.
-	 * - HAL initialization, this also initializes the configured device drivers
-	 *   and performs the board-specific initializations.
-	 * - Kernel initialization, the main() function becomes a thread and the
-	 *   RTOS is active.
-	 */
-	halInit();
-
-	/* After this call, scheduler, systick, heap, etc. are available. */
-	/* By doing chSysInit() here, it runs before C++ constructors, which may
-	 * require the heap.
-	 */
-	chSysInit();
-}
-
-}
-
-static BasebandThread baseband_thread;
-
-static void init() {
-	i2s::i2s0::configure(
-		audio::i2s0_config_tx,
-		audio::i2s0_config_rx,
-		audio::i2s0_config_dma
-	);
-
-	audio::dma::init();
-	audio::dma::configure();
-	audio::dma::enable();
-
-	i2s::i2s0::tx_start();
-	i2s::i2s0::rx_start();
-
-	LPC_CREG->DMAMUX = portapack::gpdma_mux;
-	gpdma::controller.enable();
-	nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
-
-	baseband::dma::init();
-
-	touch::dma::init();
-
-	const auto thread_main = chThdSelf();
-
-	baseband_thread.thread_main = thread_main;
-
-	baseband_thread.start(NORMALPRIO + 20);
-}
-
-static void shutdown() {
-	// TODO: Is this complete?
-	
-	nvicDisableVector(DMA_IRQn);
-
-	m0apptxevent_interrupt_disable();
-	
-	chSysDisable();
-
-	systick_stop();
-}
-
-static void halt() {
-	port_disable();
-	while(true) {
-		port_wait_for_interrupt();
-	}
-}
-
-class EventDispatcher {
-public:
-	MessageHandlerMap& message_handlers() {
-		return message_map;
-	}
-
-	void run() {
-		while(is_running) {
-			const auto events = wait();
-			dispatch(events);
-		}
-	}
-
-	void request_stop() {
-		is_running = false;
-	}
-
-private:
-	MessageHandlerMap message_map;
-
-	bool is_running = true;
-
-	eventmask_t wait() {
-		return chEvtWaitAny(ALL_EVENTS);
-	}
-
-	void dispatch(const eventmask_t events) {
-		if( events & EVT_MASK_BASEBAND ) {
-			handle_baseband_queue();
-		}
-
-		if( events & EVT_MASK_SPECTRUM ) {
-			handle_spectrum();
-		}
-	}
-
-	void handle_baseband_queue() {
-		std::array<uint8_t, Message::MAX_SIZE> message_buffer;
-		while(Message* const message = shared_memory.baseband_queue.pop(message_buffer)) {
-			message_map.send(message);
-		}
-	}
-
-	void handle_spectrum() {
-		if( baseband_thread.baseband_processor ) {
-			baseband_thread.baseband_processor->update_spectrum();
-		}
-	}
-};
-
-const auto baseband_buffer =
-	new std::array<baseband::sample_t, 8192>();
-	
 char ram_loop[32];
 typedef int (*fn_ptr)(void);
 fn_ptr loop_ptr;
@@ -586,27 +310,4 @@ int main(void) {
 			event_dispatcher.request_stop();
 		}
 	);
-
-	/* TODO: Ensure DMAs are configured to point at first LLI in chain. */
-
-	touch::dma::allocate();
-	touch::dma::enable();
-	
-	baseband::dma::configure(
-		baseband_buffer->data(),
-		direction
-	);
-
-	//baseband::dma::allocate(4, 2048);
-
-	event_dispatcher.run();
-
-	shutdown();
-
-	ShutdownMessage shutdown_message;
-	shared_memory.application_queue.push(shutdown_message);
-
-	halt();
-
-	return 0;
-}
+*/

firmware/baseband-tx/name

@@ -1 +1 @@
-Second module
+Experimental

firmware/baseband-tx/proc_audiotx.cpp

@@ -26,6 +26,6 @@
 
 #include <cstdint>
 
-void AudioTXProcessor::execute(buffer_c8_t buffer) {
+void AudioTXProcessor::execute(const buffer_c8_t& buffer) {
 
 }

firmware/baseband-tx/proc_audiotx.hpp

@@ -29,7 +29,8 @@
 
 class AudioTXProcessor : public BasebandProcessor {
 public:
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
+	
 
 private:
 	int8_t audio_fifo[SAMPLERATE];

firmware/baseband-tx/proc_fsk_lcr.cpp

@@ -25,7 +25,7 @@
 
 #include <cstdint>
 
-void LCRFSKProcessor::execute(buffer_c8_t buffer) {
+void LCRFSKProcessor::execute(const buffer_c8_t& buffer) {
 	
 	for (size_t i = 0; i<buffer.count; i++) {
 		

firmware/baseband-tx/proc_fsk_lcr.hpp

@@ -26,7 +26,7 @@
 
 class LCRFSKProcessor : public BasebandProcessor {
 public:
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 
 private:
 	int8_t re, im;

firmware/baseband-tx/proc_jammer.cpp

@@ -27,33 +27,9 @@
 
 #define POLY_MASK_32 0xB4BCD35C
 
-
-void JammerProcessor::execute(buffer_c8_t buffer) {
+void JammerProcessor::execute(const buffer_c8_t& buffer) {
 	for (size_t i = 0; i<buffer.count; i++) {
 
-		/*if (s > 3000000) {
-			s = 0;
-			feedback = lfsr & 1;
-			lfsr >>= 1;
-			if (feedback == 1)
-				lfsr ^= POLY_MASK_32;
-		} else {
-			s++;
-		}
-
-		aphase += lfsr;*/
-		
-		/*if (s >= 10) {
-			s = 0;
-			aphase += 353205;	// DEBUG
-		} else {
-			s++;
-		}
-		
-		sample = sintab[(aphase & 0x03FF0000)>>16];*/
-		
-		// Duration timer
-		// 
 		if (s >= 10000) { //shared_memory.jammer_ranges[ir].duration
 			s = 0;
 			for (;;) {

firmware/baseband-tx/proc_jammer.hpp

@@ -26,7 +26,7 @@
 
 class JammerProcessor : public BasebandProcessor {
 public:
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 
 private:
     int32_t lfsr32 = 0xABCDE;

firmware/baseband-tx/proc_playaudio.cpp

@@ -33,7 +33,7 @@ void PlayAudioProcessor::fill_buffer(int8_t * inptr) {
 	asked = false;
 }
 
-void PlayAudioProcessor::execute(buffer_c8_t buffer) {
+void PlayAudioProcessor::execute(const buffer_c8_t& buffer){
 
 	// This is called at 1536000/2048 = 750Hz
 
@@ -69,5 +69,5 @@ void PlayAudioProcessor::execute(buffer_c8_t buffer) {
 		buffer.p[i] = {(int8_t)re,(int8_t)im};
 	}
 	
-	fill_audio_buffer(preview_audio_buffer);
+	//fill_audio_buffer(preview_audio_buffer);
 }

firmware/baseband-tx/proc_playaudio.hpp

@@ -27,7 +27,7 @@
 
 class PlayAudioProcessor : public BasebandProcessor {
 public:
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 	void fill_buffer(int8_t * inptr);
 
 private:

firmware/baseband-tx/proc_rds.cpp

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 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_rds.hpp"
+#include "portapack_shared_memory.hpp"
+#include "sine_table.hpp"
+
+#include <cstdint>
+
+void RDSProcessor::execute(const buffer_c8_t& buffer) {
+	
+	for (size_t i = 0; i<buffer.count; i++) {
+		
+		//Sample generation 2.28M/10=228kHz
+		if(s >= 9) {
+			s = 0;
+			if(sample_count >= SAMPLES_PER_BIT) {
+				cur_bit = (shared_memory.rdsdata[(bit_pos / 26) & 15]>>(25-(bit_pos % 26))) & 1;
+				prev_output = cur_output;
+				cur_output = prev_output ^ cur_bit;
+
+				int32_t *src = waveform_biphase;
+				int idx = in_sample_index;
+
+				for(int j=0; j<FILTER_SIZE; j++) {
+					val = (*src++);
+					if (cur_output) val = -val;
+					sample_buffer[idx++] += val;
+					if (idx >= SAMPLE_BUFFER_SIZE) idx = 0;
+				}
+
+				in_sample_index += SAMPLES_PER_BIT;
+				if (in_sample_index >= SAMPLE_BUFFER_SIZE) in_sample_index -= SAMPLE_BUFFER_SIZE;
+				
+				bit_pos++;
+				sample_count = 0;
+			}
+			
+			sample = sample_buffer[out_sample_index];
+			sample_buffer[out_sample_index] = 0;
+			out_sample_index++;
+			if (out_sample_index >= SAMPLE_BUFFER_SIZE) out_sample_index = 0;
+			
+			//AM @ 228k/4=57kHz
+			switch (mphase) {
+				case 0:
+				case 2: sample = 0; break;
+				case 1: break;
+				case 3: sample = -sample; break;
+			}
+			mphase++;
+			if (mphase >= 4) mphase = 0;
+			
+			sample_count++;
+		} else {
+			s++;
+		}
+		
+		//FM
+		frq = (sample>>16) * 386760;
+		
+		phase = (phase + frq);
+		sphase = phase + (256<<16);
+
+		//re = sintab[(sphase & 0x03FF0000)>>16];
+		//im = sintab[(phase & 0x03FF0000)>>16];
+		
+		buffer.p[i] = {(int8_t)re,(int8_t)im};
+	}
+}
+	

firmware/baseband-tx/proc_rds.hpp

@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 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_RDS_H__
+#define __PROC_RDS_H__
+
+#include "baseband_processor.hpp"
+
+#define SAMPLES_PER_BIT 192
+#define FILTER_SIZE 576
+#define SAMPLE_BUFFER_SIZE SAMPLES_PER_BIT + FILTER_SIZE
+
+class RDSProcessor : public BasebandProcessor {
+public:
+	void execute(const buffer_c8_t& buffer) override;
+
+private:
+	int8_t re, im;
+	uint8_t mphase, s;
+    uint32_t bit_pos;
+    int32_t sample_buffer[SAMPLE_BUFFER_SIZE] = {0};
+    int32_t val;
+    uint8_t prev_output = 0;
+    uint8_t cur_output = 0;
+    uint8_t cur_bit = 0;
+    int sample_count = SAMPLES_PER_BIT;
+    int in_sample_index = 0;
+    int32_t sample;
+    int out_sample_index = SAMPLE_BUFFER_SIZE-1;
+	uint32_t phase, sphase;
+	int32_t sig, frq, frq_im, rdsc;
+	int32_t k;
+
+	int32_t waveform_biphase[576] = {
+		165,167,168,168,167,166,163,160,
+		157,152,147,141,134,126,118,109,
+		99,88,77,66,53,41,27,14,
+		0,-14,-29,-44,-59,-74,-89,-105,
+		-120,-135,-150,-165,-179,-193,-206,-218,
+		-231,-242,-252,-262,-271,-279,-286,-291,
+		-296,-299,-301,-302,-302,-300,-297,-292,
+		-286,-278,-269,-259,-247,-233,-219,-202,
+		-185,-166,-145,-124,-101,-77,-52,-26,
+		0,27,56,85,114,144,175,205,
+		236,266,296,326,356,384,412,439,
+		465,490,513,535,555,574,590,604,
+		616,626,633,637,639,638,633,626,
+		616,602,586,565,542,515,485,451,
+		414,373,329,282,232,178,121,62,
+		0,-65,-132,-202,-274,-347,-423,-500,
+		-578,-656,-736,-815,-894,-973,-1051,-1128,
+		-1203,-1276,-1347,-1415,-1479,-1540,-1596,-1648,
+		-1695,-1736,-1771,-1799,-1820,-1833,-1838,-1835,
+		-1822,-1800,-1767,-1724,-1670,-1605,-1527,-1437,
+		-1334,-1217,-1087,-943,-785,-611,-423,-219,
+		0,235,487,755,1040,1341,1659,1994,
+		2346,2715,3101,3504,3923,4359,4811,5280,
+		5764,6264,6780,7310,7856,8415,8987,9573,
+		10172,10782,11404,12036,12678,13329,13989,14656,
+		15330,16009,16694,17382,18074,18767,19461,20155,
+		20848,21539,22226,22909,23586,24256,24918,25571,
+		26214,26845,27464,28068,28658,29231,29787,30325,
+		30842,31339,31814,32266,32694,33097,33473,33823,
+		34144,34437,34699,34931,35131,35299,35434,35535,
+		35602,35634,35630,35591,35515,35402,35252,35065,
+		34841,34579,34279,33941,33566,33153,32702,32214,
+		31689,31128,30530,29897,29228,28525,27788,27017,
+		26214,25379,24513,23617,22693,21740,20761,19755,
+		18725,17672,16597,15501,14385,13251,12101,10935,
+		9755,8563,7360,6148,4927,3701,2470,1235,
+		0,-1235,-2470,-3701,-4927,-6148,-7360,-8563,
+		-9755,-10935,-12101,-13251,-14385,-15501,-16597,-17672,
+		-18725,-19755,-20761,-21740,-22693,-23617,-24513,-25379,
+		-26214,-27017,-27788,-28525,-29228,-29897,-30530,-31128,
+		-31689,-32214,-32702,-33153,-33566,-33941,-34279,-34579,
+		-34841,-35065,-35252,-35402,-35515,-35591,-35630,-35634,
+		-35602,-35535,-35434,-35299,-35131,-34931,-34699,-34437,
+		-34144,-33823,-33473,-33097,-32694,-32266,-31814,-31339,
+		-30842,-30325,-29787,-29231,-28658,-28068,-27464,-26845,
+		-26214,-25571,-24918,-24256,-23586,-22909,-22226,-21539,
+		-20848,-20155,-19461,-18767,-18074,-17382,-16694,-16009,
+		-15330,-14656,-13989,-13329,-12678,-12036,-11404,-10782,
+		-10172,-9573,-8987,-8415,-7856,-7310,-6780,-6264,
+		-5764,-5280,-4811,-4359,-3923,-3504,-3101,-2715,
+		-2346,-1994,-1659,-1341,-1040,-755,-487,-235,
+		0,219,423,611,785,943,1087,1217,
+		1334,1437,1527,1605,1670,1724,1767,1800,
+		1822,1835,1838,1833,1820,1799,1771,1736,
+		1695,1648,1596,1540,1479,1415,1347,1276,
+		1203,1128,1051,973,894,815,736,656,
+		578,500,423,347,274,202,132,65,
+		0,-62,-121,-178,-232,-282,-329,-373,
+		-414,-451,-485,-515,-542,-565,-586,-602,
+		-616,-626,-633,-638,-639,-637,-633,-626,
+		-616,-604,-590,-574,-555,-535,-513,-490,
+		-465,-439,-412,-384,-356,-326,-296,-266,
+		-236,-205,-175,-144,-114,-85,-56,-27,
+		0,26,52,77,101,124,145,166,
+		185,202,219,233,247,259,269,278,
+		286,292,297,300,302,302,301,299,
+		296,291,286,279,271,262,252,242,
+		231,218,206,193,179,165,150,135,
+		120,105,89,74,59,44,29,14,
+		0,-14,-27,-41,-53,-66,-77,-88,
+		-99,-109,-118,-126,-134,-141,-147,-152,
+		-157,-160,-163,-166,-167,-168,-168,-167
+	};
+
+};
+
+#endif

firmware/baseband-tx/proc_xylos.cpp

@@ -21,6 +21,10 @@
  */
 
 #include "proc_xylos.hpp"
+
+#include "dsp_iir_config.hpp"
+//#include "audio_output.hpp"
+
 #include "portapack_shared_memory.hpp"
 #include "sine_table.hpp"
 
@@ -31,7 +35,7 @@
 // 14 13 12 11:
 // 2108 989 2259 931
 
-void XylosProcessor::execute(buffer_c8_t buffer) {
+void XylosProcessor::execute(const buffer_c8_t& buffer) {
 	
 	// This is called at 1536000/2048 = 750Hz
 	
@@ -88,5 +92,5 @@ void XylosProcessor::execute(buffer_c8_t buffer) {
 		buffer.p[i] = {(int8_t)re,(int8_t)im};
 	}
 	
-	fill_audio_buffer(preview_audio_buffer);
+	//audio_output.write(preview_audio_buffer);
 }

firmware/baseband-tx/proc_xylos.hpp

@@ -25,12 +25,18 @@
 
 #include "baseband_processor.hpp"
 
+#include "dsp_decimate.hpp"
+#include "dsp_demodulate.hpp"
+
+//#include "audio_output.hpp"
+#include "baseband_processor.hpp"
+
 #define CCIR_TONELENGTH 15360-1 // 1536000/10/10
 #define PHASEV 436.91	// (65536*1024)/1536000*10
 
 class XylosProcessor : public BasebandProcessor {
 public:
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 
 private:
 	int16_t audio_data[64];
@@ -67,6 +73,8 @@ private:
 	uint32_t aphase, phase, sphase;
 	int32_t sample, frq;
 	TXDoneMessage message;
+	
+	//AudioOutput audio_output;
 };
 
 #endif

firmware/baseband-tx/rssi_dma.cpp

@@ -157,7 +157,7 @@ bool is_enabled() {
 }
 
 void disable() {
-	gpdma_channel.disable_force();
+	gpdma_channel.disable();
 }
 
 rf::rssi::buffer_t wait_for_buffer() {

firmware/baseband-tx/rssi_thread.cpp

@@ -0,0 +1,63 @@
+/*
+ * 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 "rssi_thread.hpp"
+
+#include "rssi.hpp"
+#include "rssi_dma.hpp"
+#include "rssi_stats_collector.hpp"
+
+#include "message.hpp"
+#include "portapack_shared_memory.hpp"
+
+WORKING_AREA(rssi_thread_wa, 128);
+
+Thread* RSSIThread::start(const tprio_t priority) {
+	return chThdCreateStatic(rssi_thread_wa, sizeof(rssi_thread_wa),
+		priority, ThreadBase::fn,
+		this
+	);
+}
+
+void RSSIThread::run() {
+	rf::rssi::init();
+	rf::rssi::dma::allocate(4, 400);
+
+	RSSIStatisticsCollector stats;
+
+	while(true) {
+		// TODO: Place correct sampling rate into buffer returned here:
+		const auto buffer_tmp = rf::rssi::dma::wait_for_buffer();
+		const rf::rssi::buffer_t buffer {
+			buffer_tmp.p, buffer_tmp.count, sampling_rate
+		};
+
+		stats.process(
+			buffer,
+			[](const RSSIStatistics& statistics) {
+				const RSSIStatisticsMessage message { statistics };
+				shared_memory.application_queue.push(message);
+			}
+		);
+	}
+
+	rf::rssi::dma::free();
+}

firmware/baseband-tx/rssi_thread.hpp

@@ -0,0 +1,46 @@
+/*
+ * 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 __RSSI_THREAD_H__
+#define __RSSI_THREAD_H__
+
+#include "thread_base.hpp"
+
+#include <ch.h>
+
+#include <cstdint>
+
+class RSSIThread : public ThreadBase {
+public:
+	RSSIThread(
+	) : ThreadBase { "rssi" }
+	{
+	}
+
+	Thread* start(const tprio_t priority);
+
+private:
+	void run() override;
+
+	const uint32_t sampling_rate { 400000 };
+};
+
+#endif/*__RSSI_THREAD_H__*/

firmware/baseband-tx/spectrum_collector.cpp

@@ -0,0 +1,130 @@
+/*
+ * 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 "spectrum_collector.hpp"
+
+#include "dsp_fft.hpp"
+
+#include "utility.hpp"
+#include "event_m4.hpp"
+#include "portapack_shared_memory.hpp"
+
+#include "event_m4.hpp"
+
+#include <algorithm>
+
+void SpectrumCollector::on_message(const Message* const message) {
+	switch(message->id) {
+	case Message::ID::UpdateSpectrum:
+		update();
+		break;
+
+	case Message::ID::SpectrumStreamingConfig:
+		set_state(*reinterpret_cast<const SpectrumStreamingConfigMessage*>(message));
+		break;
+
+	default:
+		break;
+	}
+}
+
+void SpectrumCollector::set_state(const SpectrumStreamingConfigMessage& message) {
+	if( message.mode == SpectrumStreamingConfigMessage::Mode::Running ) {
+		start();
+	} else {
+		stop();
+	}
+}
+
+void SpectrumCollector::start() {
+	streaming = true;
+	ChannelSpectrumConfigMessage message { &fifo };
+	shared_memory.application_queue.push(message);
+}
+
+void SpectrumCollector::stop() {
+	streaming = false;
+	fifo.reset_in();
+}
+
+void SpectrumCollector::set_decimation_factor(
+	const size_t decimation_factor
+) {
+	channel_spectrum_decimator.set_factor(decimation_factor);
+}
+
+/* TODO: Refactor to register task with idle thread?
+ * It's sad that the idle thread has to call all the way back here just to
+ * perform the deferred task on the buffer of data we prepared.
+ */
+
+void SpectrumCollector::feed(
+	const buffer_c16_t& channel,
+	const uint32_t filter_pass_frequency,
+	const uint32_t filter_stop_frequency
+) {
+	// Called from baseband processing thread.
+	channel_filter_pass_frequency = filter_pass_frequency;
+	channel_filter_stop_frequency = filter_stop_frequency;
+
+	channel_spectrum_decimator.feed(
+		channel,
+		[this](const buffer_c16_t& data) {
+			this->post_message(data);
+		}
+	);
+}
+
+void SpectrumCollector::post_message(const buffer_c16_t& data) {
+	// Called from baseband processing thread.
+	if( streaming && !channel_spectrum_request_update ) {
+		fft_swap(data, channel_spectrum);
+		channel_spectrum_sampling_rate = data.sampling_rate;
+		channel_spectrum_request_update = true;
+		EventDispatcher::events_flag(EVT_MASK_SPECTRUM);
+	}
+}
+
+void SpectrumCollector::update() {
+	// Called from idle thread (after EVT_MASK_SPECTRUM is flagged)
+	if( streaming && channel_spectrum_request_update ) {
+		/* Decimated buffer is full. Compute spectrum. */
+		fft_c_preswapped(channel_spectrum);
+
+		ChannelSpectrum spectrum;
+		spectrum.sampling_rate = channel_spectrum_sampling_rate;
+		spectrum.channel_filter_pass_frequency = channel_filter_pass_frequency;
+		spectrum.channel_filter_stop_frequency = channel_filter_stop_frequency;
+		for(size_t i=0; i<spectrum.db.size(); i++) {
+			// Three point Hamming window.
+			const auto corrected_sample = channel_spectrum[i] * 0.54f
+				+ (channel_spectrum[(i-1) & 0xff] + channel_spectrum[(i+1) & 0xff]) * -0.23f;
+			const auto mag2 = magnitude_squared(corrected_sample);
+			const float db = complex16_mag_squared_to_dbv_norm(mag2);
+			constexpr float mag_scale = 5.0f;
+			const unsigned int v = (db * mag_scale) + 255.0f;
+			spectrum.db[i] = std::max(0U, std::min(255U, v));
+		}
+		fifo.in(spectrum);
+	}
+
+	channel_spectrum_request_update = false;
+}

firmware/baseband-tx/spectrum_collector.hpp

@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+#ifndef __SPECTRUM_COLLECTOR_H__
+#define __SPECTRUM_COLLECTOR_H__
+
+#include "dsp_types.hpp"
+#include "complex.hpp"
+
+#include "block_decimator.hpp"
+
+#include <cstdint>
+#include <array>
+
+#include "message.hpp"
+
+class SpectrumCollector {
+public:
+	constexpr SpectrumCollector(
+	) : channel_spectrum_decimator { 1 }
+	{
+	}
+
+	void on_message(const Message* const message);
+
+	void set_decimation_factor(const size_t decimation_factor);
+
+	void feed(
+		const buffer_c16_t& channel,
+		const uint32_t filter_pass_frequency,
+		const uint32_t filter_stop_frequency
+	);
+
+private:
+	BlockDecimator<256> channel_spectrum_decimator;
+	ChannelSpectrumFIFO fifo;
+
+	volatile bool channel_spectrum_request_update { false };
+	bool streaming { false };
+	std::array<std::complex<float>, 256> channel_spectrum;
+	uint32_t channel_spectrum_sampling_rate { 0 };
+	uint32_t channel_filter_pass_frequency { 0 };
+	uint32_t channel_filter_stop_frequency { 0 };
+
+	void post_message(const buffer_c16_t& data);
+
+	void set_state(const SpectrumStreamingConfigMessage& message);
+	void start();
+	void stop();
+
+	void update();
+};
+
+#endif/*__SPECTRUM_COLLECTOR_H__*/

firmware/baseband-tx/thread_base.hpp

@@ -0,0 +1,50 @@
+/*
+ * 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 __THREAD_BASE_H__
+#define __THREAD_BASE_H__
+
+#include <ch.h>
+
+class ThreadBase {
+public:
+	constexpr ThreadBase(
+		const char* const name
+	) : name { name }
+	{
+	}
+
+protected:
+	static msg_t fn(void* arg) {
+		auto obj = static_cast<ThreadBase*>(arg);
+		chRegSetThreadName(obj->name);
+		obj->run();
+
+		return 0;
+	}
+
+private:
+	const char* const name;
+
+	virtual void run() = 0;
+};
+
+#endif/*__THREAD_BASE_H__*/

firmware/baseband-tx/touch_dma.cpp

@@ -122,7 +122,7 @@ bool is_enabled() {
 }
 
 void disable() {
-	gpdma_channel.disable_force();
+	gpdma_channel.disable();
 }
 
 } /* namespace dma */

firmware/baseband/description

@@ -1 +1 @@
-Basic RX/TX stuff for testing :)
+Original firmware's functionalities: Receiver.

firmware/baseband/main.cpp

@@ -50,121 +50,6 @@
 #include <cstdint>
 #include <cstddef>
 #include <array>
-#include <string>
-#include <bitset>
-
-class ThreadBase {
-public:
-	constexpr ThreadBase(
-		const char* const name
-	) : name { name }
-	{
-	}
-
-	static msg_t fn(void* arg) {
-		auto obj = static_cast<ThreadBase*>(arg);
-		chRegSetThreadName(obj->name);
-		obj->run();
-
-		return 0;
-	}
-
-	virtual void run() = 0;
-
-private:
-	const char* const name;
-};
-
-class BasebandThread : public ThreadBase {
-public:
-	BasebandThread(
-	) : ThreadBase { "baseband" }
-	{
-	}
-
-	Thread* start(const tprio_t priority) {
-		return chThdCreateStatic(wa, sizeof(wa),
-			priority, ThreadBase::fn,
-			this
-		);
-	}
-
-	Thread* thread_main { nullptr };
-	Thread* thread_rssi { nullptr };
-	BasebandProcessor* baseband_processor { nullptr };
-	BasebandConfiguration baseband_configuration;
-
-private:
-	WORKING_AREA(wa, 2048);
-
-	void run() override {
-		BasebandStatsCollector stats {
-			chSysGetIdleThread(),
-			thread_main,
-			thread_rssi,
-			chThdSelf()
-		};
-
-		while(true) {
-			// TODO: Place correct sampling rate into buffer returned here:
-			const auto buffer_tmp = baseband::dma::wait_for_rx_buffer();
-			const buffer_c8_t buffer {
-				buffer_tmp.p, buffer_tmp.count, baseband_configuration.sampling_rate
-			};
-
-			if( baseband_processor ) {
-				baseband_processor->execute(buffer);
-			}
-
-			stats.process(buffer,
-				[](const BasebandStatistics statistics) {
-					const BasebandStatisticsMessage message { statistics };
-					shared_memory.application_queue.push(message);
-				}
-			);
-		}
-	}
-};
-
-class RSSIThread : public ThreadBase {
-public:
-	RSSIThread(
-	) : ThreadBase { "rssi" }
-	{
-	}
-
-	Thread* start(const tprio_t priority) {
-		return chThdCreateStatic(wa, sizeof(wa),
-			priority, ThreadBase::fn,
-			this
-		);
-	}
-
-	uint32_t sampling_rate { 400000 };
-
-private:
-	WORKING_AREA(wa, 128);
-
-	void run() override {
-		RSSIStatisticsCollector stats;
-
-		while(true) {
-			// TODO: Place correct sampling rate into buffer returned here:
-			const auto buffer_tmp = rf::rssi::dma::wait_for_buffer();
-			const rf::rssi::buffer_t buffer {
-				buffer_tmp.p, buffer_tmp.count, sampling_rate
-			};
-
-			stats.process(
-				buffer,
-				[](const RSSIStatistics statistics) {
-					const RSSIStatisticsMessage message { statistics };
-					shared_memory.application_queue.push(message);
-				}
-			);
-		}
-	}
-};
 
 extern "C" {
 
@@ -187,9 +72,6 @@ void __late_init(void) {
 
 }
 
-static BasebandThread baseband_thread;
-static RSSIThread rssi_thread;
-
 static void init() {
 	i2s::i2s0::configure(
 		audio::i2s0_config_tx,
@@ -208,31 +90,9 @@ static void init() {
 	gpdma::controller.enable();
 	nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
 
-	baseband::dma::init();
-
-	rf::rssi::init();
 	touch::dma::init();
-
-	const auto thread_main = chThdSelf();
-	
-	const auto thread_rssi = rssi_thread.start(NORMALPRIO + 10);
-
-	baseband_thread.thread_main = thread_main;
-	baseband_thread.thread_rssi = thread_rssi;
-
-	baseband_thread.start(NORMALPRIO + 20);
-}
-
-static void shutdown() {
-	// TODO: Is this complete?
-	
-	nvicDisableVector(DMA_IRQn);
-
-	m0apptxevent_interrupt_disable();
-	
-	chSysDisable();
-
-	systick_stop();
+	touch::dma::allocate();
+	touch::dma::enable();
 }
 
 static void halt() {
@@ -242,146 +102,27 @@ static void halt() {
 	}
 }
 
-class EventDispatcher {
-public:
-	MessageHandlerMap& message_handlers() {
-		return message_map;
-	}
+static void shutdown() {
+	// TODO: Is this complete?
+	
+	nvicDisableVector(DMA_IRQn);
+	
+	chSysDisable();
 
-	void run() {
-		while(is_running) {
-			const auto events = wait();
-			dispatch(events);
-		}
-	}
+	systick_stop();
 
-	void request_stop() {
-		is_running = false;
-	}
+	ShutdownMessage shutdown_message;
+	shared_memory.application_queue.push(shutdown_message);
 
-private:
-	MessageHandlerMap message_map;
-
-	bool is_running = true;
-
-	eventmask_t wait() {
-		return chEvtWaitAny(ALL_EVENTS);
-	}
-
-	void dispatch(const eventmask_t events) {
-		if( events & EVT_MASK_BASEBAND ) {
-			handle_baseband_queue();
-		}
-
-		if( events & EVT_MASK_SPECTRUM ) {
-			handle_spectrum();
-		}
-	}
-
-	void handle_baseband_queue() {
-		std::array<uint8_t, Message::MAX_SIZE> message_buffer;
-		while(Message* const message = shared_memory.baseband_queue.pop(message_buffer)) {
-			message_map.send(message);
-		}
-	}
-
-	void handle_spectrum() {
-		if( baseband_thread.baseband_processor ) {
-			baseband_thread.baseband_processor->update_spectrum();
-		}
-	}
-};
-
-static constexpr auto direction = baseband::Direction::Receive;
+	halt();
+}
 
 int main(void) {
 	init();
 
-	events_initialize(chThdSelf());
-	m0apptxevent_interrupt_enable();
-
-	EventDispatcher event_dispatcher;
-	auto& message_handlers = event_dispatcher.message_handlers();
-
-	message_handlers.register_handler(Message::ID::BasebandConfiguration,
-		[&message_handlers](const Message* const p) {
-			auto message = reinterpret_cast<const BasebandConfigurationMessage*>(p);
-			if( message->configuration.mode != baseband_thread.baseband_configuration.mode ) {
-
-				if( baseband_thread.baseband_processor ) {
-					i2s::i2s0::tx_mute();
-					baseband::dma::disable();
-					rf::rssi::stop();
-				}
-
-				// TODO: Timing problem around disabling DMA and nulling and deleting old processor
-				auto old_p = baseband_thread.baseband_processor;
-				baseband_thread.baseband_processor = nullptr;
-				delete old_p;
-
-				switch(message->configuration.mode) {
-				case 0:
-					baseband_thread.baseband_processor = new NarrowbandAMAudio();
-					break;
-
-				case 1:
-					baseband_thread.baseband_processor = new NarrowbandFMAudio();
-					break;
-
-				case 2:
-					baseband_thread.baseband_processor = new WidebandFMAudio();
-					break;
-
-				case 3:
-					baseband_thread.baseband_processor = new AISProcessor();
-					break;
-
-				case 4:
-					baseband_thread.baseband_processor = new WidebandSpectrum();
-					break;
-
-				case 5:
-					baseband_thread.baseband_processor = new TPMSProcessor();
-					break;
-
-				default:
-					break;
-				}
-
-				if( baseband_thread.baseband_processor ) {
-					if( direction == baseband::Direction::Receive ) {
-						rf::rssi::start();
-					}
-					baseband::dma::enable(direction);
-				}
-			}
-
-			baseband_thread.baseband_configuration = message->configuration;
-		}
-	);
-
-	message_handlers.register_handler(Message::ID::Shutdown,
-		[&event_dispatcher](const Message* const) {
-			event_dispatcher.request_stop();
-		}
-	);
-
 	/* TODO: Ensure DMAs are configured to point at first LLI in chain. */
 
-	if( direction == baseband::Direction::Receive ) {
-		rf::rssi::dma::allocate(4, 400);
-	}
-
-	touch::dma::allocate();
-	touch::dma::enable();
-
-	const auto baseband_buffer =
-		new std::array<baseband::sample_t, 8192>();
-	baseband::dma::configure(
-		baseband_buffer->data(),
-		direction
-	);
-
+	EventDispatcher event_dispatcher;
 	event_dispatcher.run();
 
 	shutdown();

firmware/baseband/name

@@ -1 +1 @@
-First module
+Receiver

firmware/baseband/proc_afskrx.cpp

@@ -25,30 +25,17 @@
 
 using namespace lpc43xx;
 
-void AFSKRXProcessor::execute(buffer_c8_t buffer) {
+void AFSKRXProcessor::execute(const buffer_c8_t& buffer) {
+	if( !configured ) {
+		return;
+	}
 	/* Called every 2048/3072000 second -- 1500Hz. */
-
-	auto decimator_out = decimator.execute(buffer);
-
-	const buffer_c16_t work_baseband_buffer {
-		(complex16_t*)decimator_out.p,
-		sizeof(*decimator_out.p) * decimator_out.count
-	};
-
-	/* 96kHz complex<int16_t>[64]
-	 * -> FIR filter, <6kHz (0.063fs) pass, gain 1.0
-	 * -> 48kHz int16_t[32] */
-	auto channel = channel_filter.execute(decimator_out, work_baseband_buffer);
-
-	const buffer_s16_t work_audio_buffer {
-		(int16_t*)decimator_out.p,
-		sizeof(*decimator_out.p) * decimator_out.count
-	};
 	
-	/* 48kHz complex<int16_t>[32]
-	 * -> FM demodulation
-	 * -> 48kHz int16_t[32] */
-	auto audio = demod.execute(channel, work_audio_buffer);
+	const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
+	const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
+	const auto channel_out = channel_filter.execute(decim_1_out, dst_buffer);
+
+	auto audio = demod.execute(channel_out, work_audio_buffer);
 
 	/*static uint64_t audio_present_history = 0;
 	const auto audio_present_now = squelch.execute(audio);
@@ -65,7 +52,7 @@ void AFSKRXProcessor::execute(buffer_c8_t buffer) {
 		}*/
 	//}
 
-	audio_hpf.execute_in_place(audio);
+	//audio_hpf.execute_in_place(audio);
 
 	for(size_t i=0; i<audio.count; i++) {
 		if (spur > 10) {
@@ -97,9 +84,9 @@ void AFSKRXProcessor::execute(buffer_c8_t buffer) {
 	
     if (sc >= 600) {
 		sc = 0;
-		AFSKDataMessage message;
-		memcpy(message.data,aud,128*2);
-		shared_memory.application_queue.push(message);
+		//AFSKDataMessage message;
+		//memcpy(message.data,aud,128*2);
+		//shared_memory.application_queue.push(message);
 		audc = 0;
 	} else {
 		sc++;
@@ -110,7 +97,7 @@ void AFSKRXProcessor::execute(buffer_c8_t buffer) {
 		audc++;
 	}
 	
-	fill_audio_buffer(audio);
+	audio_output.write(audio);
 }
 
 void AFSKRXProcessor::data_handler(

firmware/baseband/proc_afskrx.hpp

@@ -24,38 +24,35 @@
 
 #include "baseband_processor.hpp"
 
-#include "channel_decimator.hpp"
 #include "dsp_decimate.hpp"
 #include "dsp_demodulate.hpp"
-#include "dsp_fir_taps.hpp"
-#include "dsp_iir.hpp"
-#include "dsp_iir_config.hpp"
-#include "dsp_squelch.hpp"
 
+#include "audio_output.hpp"
 #include "message.hpp"
 
-#include <cstdint>
-#include <cstddef>
-#include <bitset>
-
 class AFSKRXProcessor : public BasebandProcessor {
 public:
-	AFSKRXProcessor() {
-		decimator.set_decimation_factor(ChannelDecimator::DecimationFactor::By32);
-		channel_filter.configure(channel_filter_taps.taps, 2);
-	}
-
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 
 private:
-	ChannelDecimator decimator;
-	const fir_taps_real<64>& channel_filter_taps = taps_64_lp_042_078_tfilter;
-	dsp::decimate::FIRAndDecimateComplex channel_filter;
-	dsp::demodulate::FM demod { 48000, 5000 };
-
-	IIRBiquadFilter audio_hpf { audio_hpf_config };
-	//FMSquelch squelch;
+	std::array<complex16_t, 512> dst;
+	const buffer_c16_t dst_buffer {
+		dst.data(),
+		dst.size()
+	};
+	const buffer_f32_t work_audio_buffer {
+		(float*)dst.data(),
+		sizeof(dst) / sizeof(float)
+	};
 	
+	dsp::decimate::FIRAndDecimateComplex channel_filter;
+	dsp::demodulate::FM demod;	// 48000 5000
+	
+	dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0;
+	dsp::decimate::FIRC16xR16x32Decim8 decim_1;
+
+	AudioOutput audio_output;
+
     uint16_t bit_timer = 0, freq_timer = 0;
 	uint16_t sc;
 	uint8_t audc, spur, sign, prev_sign, bit = 0;
@@ -63,6 +60,9 @@ private:
 	int16_t aud[128];
 	
 	void data_handler(const double data);
+	
+	bool configured { false };
+	void configure(const NBFMConfigureMessage& message);
 };
 
 #endif/*__PROC_TPMS_H__*/

firmware/baseband/proc_sigfrx.cpp

@@ -24,46 +24,6 @@
 #include <cstdint>
 #include <cstddef>
 
-void SIGFRXProcessor::execute(buffer_c8_t buffer) {
+void SIGFRXProcessor::execute(const buffer_c8_t& buffer) {
 	/* Called every 2048/3072000 second -- 1500Hz. */
-
-	auto decimator_out = decimator.execute(buffer);
-
-	const buffer_c16_t work_baseband_buffer {
-		(complex16_t*)decimator_out.p,
-		sizeof(*decimator_out.p) * decimator_out.count
-	};
-
-	/* 192kHz complex<int16_t>[64]
-	 * -> 96kHz int16_t[32] */
-	//auto channel = channel_filter.execute(decimator_out, work_baseband_buffer);
-
-	// TODO: Feed channel_stats post-decimation data?
-	feed_channel_spectrum(
-		decimator_out,
-		41000, //decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
-		70000 //decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
-	);
-
-	/*const buffer_s16_t work_audio_buffer {
-		(int16_t*)decimator_out.p,
-		sizeof(*decimator_out.p) * decimator_out.count
-	};
-	* 
-	auto audio = demod.execute(channel, work_audio_buffer);
-
-	static uint64_t audio_present_history = 0;
-	const auto audio_present_now = squelch.execute(audio);
-	audio_present_history = (audio_present_history << 1) | (audio_present_now ? 1 : 0);
-	const bool audio_present = (audio_present_history != 0);
-
-	if( !audio_present ) {
-		// Zero audio buffer.
-		for(size_t i=0; i<audio.count; i++) {
-			audio.p[i] = 0;
-		}
-	}
-
-	audio_hpf.execute_in_place(audio);
-	fill_audio_buffer(audio);*/
 }

firmware/baseband/proc_sigfrx.hpp

@@ -24,31 +24,15 @@
 
 #include "baseband_processor.hpp"
 
-#include "channel_decimator.hpp"
 #include "dsp_decimate.hpp"
 #include "dsp_demodulate.hpp"
-#include "dsp_fir_taps.hpp"
-#include "dsp_iir.hpp"
-#include "dsp_iir_config.hpp"
-#include "dsp_squelch.hpp"
 
 class SIGFRXProcessor : public BasebandProcessor {
 public:
-	SIGFRXProcessor() {
-		decimator.set_decimation_factor(ChannelDecimator::DecimationFactor::By16);
-		//channel_filter.configure(channel_filter_taps.taps, 1);
-	}
-
-	void execute(buffer_c8_t buffer) override;
+	void execute(const buffer_c8_t& buffer) override;
 
 private:
-	ChannelDecimator decimator;
-	//const fir_taps_real<64>& channel_filter_taps = taps_64_lp_410_700_tfilter; //taps_64_lp_104_140_tfilter
-	//dsp::decimate::FIRAndDecimateComplex channel_filter;
-	dsp::demodulate::FM demod { 48000, 7500 };
 
-	IIRBiquadFilter audio_hpf { audio_hpf_config };
-	FMSquelch squelch;
 };
 
 #endif

firmware/chibios-portapack/ext/fatfs/src/ff.c

@@ -2579,7 +2579,6 @@ FRESULT f_read (
 	UINT rcnt, cc;
 	BYTE csect, *rbuff = (BYTE*)buff;
 
-
 	*br = 0;	/* Clear read byte counter */
 
 	res = validate(fp);							/* Check validity */

firmware/chibios-portapack/os/hal/platforms/LPC43xx/sdc_lld.c

@@ -619,7 +619,7 @@ void sdc_lld_start_clk(SDCDriver *sdcp) {
   (void)sdcp;
   sdio_cclk_set_400khz();
   /* TODO: Reset card using CMD0 + init flag? */
-  sdio_send_command(sdcp, 0 | (1U << 15), 0);
+  if (sdio_send_command(sdcp, 0 | (1U << 15), 0) != CH_SUCCESS) for(;;);
 }
 
 /**

firmware/common/message.hpp

@@ -419,12 +419,14 @@ public:
 	int64_t freq = 0;
 };
 
-class DisplayFrameSyncMessage : public Message {
+class AFSKDataMessage : public Message {
 public:
-	constexpr DisplayFrameSyncMessage(
-	) : Message { ID::DisplayFrameSync }
+	constexpr AFSKDataMessage(
+	) : Message { ID::AFSKData }
 	{
 	}
+
+	int16_t data[128] = {0};
 };
 
 class FIFOSignalMessage : public Message {

firmware/common/modules.h

@@ -1,2 +1,2 @@
-const char md5_baseband[16] = {0x0f,0xf7,0xa8,0x6f,0x0f,0xb3,0x88,0x4c,0xec,0x45,0xcf,0x8d,0xd5,0xf8,0x11,0x92,};
-const char md5_baseband_tx[16] = {0x77,0xa8,0x27,0xec,0xb4,0xcb,0xe6,0x17,0x06,0x70,0x49,0x01,0xed,0x48,0x1f,0x54,};
+const char md5_baseband[16] = {0xf8,0xf3,0x7b,0x36,0x68,0xd3,0xa1,0x85,0x26,0xb1,0x76,0x99,0x46,0x95,0xfd,0xec,};
+const char md5_baseband_tx[16] = {0xfc,0xe9,0x57,0x6b,0xfb,0xac,0x72,0x61,0x65,0x4e,0x3d,0x7f,0xb4,0x78,0xbd,0xd2,};

firmware/common/ui_widget.cpp

@@ -1,24 +1,3 @@
-/*
- * 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 "ui_widget.hpp"
 #include "ui_painter.hpp"
 
@@ -305,77 +284,91 @@ void Text::set(const std::string value) {
 }
 
 void Text::paint(Painter& painter) {
-	if (style_ == nullptr) style_ = &style();
 	const auto rect = screen_rect();
+	const auto s = style();
 
 	painter.fill_rectangle(rect, s.background);
 
 	painter.draw_string(
 		rect.pos,
-		(*style_),
+		s,
 		text
 	);
 }
 
-/* Button ****************************************************************/
+/* Checkbox **************************************************************/
 
- Button::Button(
-	Rect parent_rect,
-	std::string text
-) : Widget { parent_rect },
-	text_ { text }
-{
-	flags.focusable = true;
-}
-
-void Button::set_text(const std::string value) {
+void Checkbox::set_text(const std::string value) {
 	text_ = value;
 	set_dirty();
 }
 
-std::string Button::text() const {
+std::string Checkbox::text() const {
 	return text_;
 }
 
-void Button::paint(Painter& painter) {
+void Checkbox::set_value(const bool value) {
+	value_ = value;
+	set_dirty();
+}
+
+bool Checkbox::value() const {
+	return value_;
+}
+
+void Checkbox::paint(Painter& painter) {
 	const auto r = screen_rect();
 	
-	if (style_ == nullptr) style_ = &style();
-
-	const auto paint_style = (has_focus() || flags.highlighted) ? style_->invert() : *(style_);
-
-	painter.draw_rectangle(r, style().foreground);
+	const auto paint_style = (has_focus() || flags.highlighted) ? style().invert() : style();
+	
+	painter.draw_rectangle({ r.pos.x, r.pos.y, 24, 24 }, style().foreground);
 
 	painter.fill_rectangle(
-		{ r.pos.x + 1, r.pos.y + 1, r.size.w - 2, r.size.h - 2 },
-		paint_style.background
+		{
+			static_cast<Coord>(r.pos.x + 1), static_cast<Coord>(r.pos.y + 1),
+			static_cast<Dim>(24 - 2), static_cast<Dim>(24 - 2)
+		},
+		style().background
 	);
-
+	
+	painter.draw_rectangle({ r.pos.x+2, r.pos.y+2, 24-4, 24-4 }, paint_style.background);
+	
+	if (value_ == true) {
+		// Check
+		portapack::display.draw_line( {r.pos.x+2, r.pos.y+14}, {r.pos.x+6, r.pos.y+18}, ui::Color::green());
+		portapack::display.draw_line( {r.pos.x+6, r.pos.y+18}, {r.pos.x+20, r.pos.y+4}, ui::Color::green());
+	} else {
+		// Cross
+		portapack::display.draw_line( {r.pos.x+1, r.pos.y+1}, {r.pos.x+24-2, r.pos.y+24-2}, ui::Color::red());
+		portapack::display.draw_line( {r.pos.x+24-2, r.pos.y+1}, {r.pos.x+1, r.pos.y+24-2}, ui::Color::red());
+	}
+	
 	const auto label_r = paint_style.font.size_of(text_);
 	painter.draw_string(
-		{ r.pos.x + (r.size.w - label_r.w) / 2, r.pos.y + (r.size.h - label_r.h) / 2 },
+		{
+			static_cast<Coord>(r.pos.x + 24 + 4),
+			static_cast<Coord>(r.pos.y + (24 - label_r.h) / 2)
+		},
 		paint_style,
 		text_
 	);
 }
 
-bool Button::on_key(const KeyEvent key) {
+bool Checkbox::on_key(const KeyEvent key) {
 	if( key == KeyEvent::Select ) {
+		value_ = not value_;
+		set_dirty();
+		
 		if( on_select ) {
 			on_select(*this);
 			return true;
 		}
-	} else {
-		if( on_dir ) {
-			on_dir(*this, key);
-			return false;
-		}
 	}
 
 	return false;
 }
 
-bool Button::on_touch(const TouchEvent event) {
+bool Checkbox::on_touch(const TouchEvent event) {
 	switch(event.type) {
 	case TouchEvent::Type::Start:
 		flags.highlighted = true;
@@ -385,6 +378,7 @@ bool Button::on_touch(const TouchEvent event) {
 
 	case TouchEvent::Type::End:
 		flags.highlighted = false;
+		value_ = not value_;
 		set_dirty();
 		if( on_select ) {
 			on_select(*this);
@@ -427,6 +421,199 @@ bool Button::on_touch(const TouchEvent event) {
 #endif
 }
 
+/* Button ****************************************************************/
+
+ Button::Button(
+	Rect parent_rect,
+	std::string text
+) : Widget { parent_rect },
+	text_ { text }
+{
+	flags.focusable = true;
+}
+
+void Button::set_text(const std::string value) {
+	text_ = value;
+	set_dirty();
+}
+
+std::string Button::text() const {
+	return text_;
+}
+
+void Button::paint(Painter& painter) {
+	const auto r = screen_rect();
+
+	const auto paint_style = (has_focus() || flags.highlighted) ? style().invert() : style();
+
+	painter.draw_rectangle(r, style().foreground);
+
+	painter.fill_rectangle(
+		{ r.pos.x + 1, r.pos.y + 1, r.size.w - 2, r.size.h - 2 },
+		paint_style.background
+	);
+
+	const auto label_r = paint_style.font.size_of(text_);
+	painter.draw_string(
+		{ r.pos.x + (r.size.w - label_r.w) / 2, r.pos.y + (r.size.h - label_r.h) / 2 },
+		paint_style,
+		text_
+	);
+}
+
+bool Button::on_key(const KeyEvent key) {
+	if( key == KeyEvent::Select ) {
+		if( on_select ) {
+			on_select(*this);
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool Button::on_touch(const TouchEvent event) {
+	switch(event.type) {
+	case TouchEvent::Type::Start:
+		flags.highlighted = true;
+		set_dirty();
+		return true;
+
+
+	case TouchEvent::Type::End:
+		flags.highlighted = false;
+		set_dirty();
+		if( on_select ) {
+			on_select(*this);
+		}
+		return true;
+
+	default:
+		return false;
+	}
+#if 0
+	switch(event.type) {
+	case TouchEvent::Type::Start:
+		flags.highlighted = true;
+		set_dirty();
+		return true;
+	case TouchEvent::Type::Move:
+		{
+			const bool new_highlighted = screen_rect().contains(event.point);
+			if( flags.highlighted != new_highlighted ) {
+				flags.highlighted = new_highlighted;
+				set_dirty();
+			}
+		}
+		return true;
+	case TouchEvent::Type::End:
+		if( flags.highlighted ) {
+			flags.highlighted = false;
+			set_dirty();
+			if( on_select ) {
+				on_select(*this);
+			}
+		}
+		return true;
+	default:
+		return false;
+	}
+#endif
+}
+
+/* Image *****************************************************************/
+
+Image::Image(
+) : Image { { }, nullptr, Color::white(), Color::black() }
+{
+}
+
+Image::Image(
+	const Rect parent_rect,
+	const Bitmap* bitmap,
+	const Color foreground,
+	const Color background
+) : Widget { parent_rect },
+	bitmap_ { bitmap },
+	foreground_ { foreground },
+	background_ { background }
+{
+}
+
+void Image::set_bitmap(const Bitmap* bitmap) {
+	bitmap_ = bitmap;
+	set_dirty();
+}
+
+void Image::set_foreground(const Color color) {
+	foreground_ = color;
+	set_dirty();
+}
+
+void Image::set_background(const Color color) {
+	background_ = color;
+	set_dirty();
+}
+
+void Image::paint(Painter& painter) {
+	if( bitmap_ ) {
+		// Code also handles ImageButton behavior.
+		const bool selected = (has_focus() || flags.highlighted);
+		painter.draw_bitmap(
+			screen_pos(),
+			*bitmap_,
+			selected ? background_ : foreground_,
+			selected ? foreground_ : background_
+		);
+	}
+}
+
+/* ImageButton ***********************************************************/
+
+// TODO: Virtually all this code is duplicated from Button. Base class?
+
+ImageButton::ImageButton(
+	const Rect parent_rect,
+	const Bitmap* bitmap,
+	const Color foreground,
+	const Color background
+) : Image { parent_rect, bitmap, foreground, background }
+{
+	flags.focusable = true;
+}
+
+bool ImageButton::on_key(const KeyEvent key) {
+	if( key == KeyEvent::Select ) {
+		if( on_select ) {
+			on_select(*this);
+			return true;
+		}
+	}
+
+	return false;
+}
+
+bool ImageButton::on_touch(const TouchEvent event) {
+	switch(event.type) {
+	case TouchEvent::Type::Start:
+		flags.highlighted = true;
+		set_dirty();
+		return true;
+
+
+	case TouchEvent::Type::End:
+		flags.highlighted = false;
+		set_dirty();
+		if( on_select ) {
+			on_select(*this);
+		}
+		return true;
+
+	default:
+		return false;
+	}
+}
+
 /* OptionsField **********************************************************/
 
 OptionsField::OptionsField(
@@ -480,6 +667,12 @@ void OptionsField::paint(Painter& painter) {
 	}
 }
 
+void OptionsField::on_focus() {
+	if( on_show_options ) {
+		on_show_options();
+	}
+}
+
 bool OptionsField::on_encoder(const EncoderEvent delta) {
 	set_selected_index(selected_index() + delta);
 	return true;

firmware/common/ui_widget.hpp

@@ -188,48 +188,11 @@ public:
 	Text(Rect parent_rect);
 
 	void set(const std::string value);
-	void set_style(const Style* new_style);
-	
+
 	void paint(Painter& painter) override;
 
 private:
 	std::string text;
-	const Style* style_ { nullptr };
-};
-
-class Checkbox : public Widget {
-public:
-	std::function<void(Checkbox&)> on_select;
-
-	Checkbox(
-		Point parent_point,
-		std::string text
-	) : Widget { parent_point },
-		text_ { text }
-	{
-		flags.focusable = true;
-	}
-
-	Checkbox(
-	) : Checkbox { { }, { } }
-	{
-	}
-
-	void set_text(const std::string value);
-	void set_style(const Style* new_style);
-	std::string text() const;
-	void set_value(const bool value);
-	bool value() const;
-
-	void paint(Painter& painter) override;
-	
-	bool on_key(const KeyEvent key) override;
-	bool on_touch(const TouchEvent event) override;
-
-private:
-	std::string text_;
-	bool value_ = false;
-	const Style* style_ { nullptr };
 };
 
 class Button : public Widget {
@@ -244,8 +207,6 @@ public:
 	}
 
 	void set_text(const std::string value);
-	void set_text(const int value);
-	void set_style(const Style* new_style);
 	std::string text() const;
 
 	void paint(Painter& painter) override;
@@ -255,7 +216,43 @@ public:
 
 private:
 	std::string text_;
-	const Style* style_ { nullptr };
+};
+
+class Image : public Widget {
+public:
+	Image();
+	Image(
+		const Rect parent_rect,
+		const Bitmap* bitmap,
+		const Color foreground,
+		const Color background
+	);
+
+	void set_bitmap(const Bitmap* bitmap);
+	void set_foreground(const Color color);
+	void set_background(const Color color);
+
+	void paint(Painter& painter) override;
+
+private:
+	const Bitmap* bitmap_;
+	Color foreground_;
+	Color background_;
+};
+
+class ImageButton : public Image {
+public:
+	std::function<void(ImageButton&)> on_select;
+
+	ImageButton(
+		const Rect parent_rect,
+		const Bitmap* bitmap,
+		const Color foreground,
+		const Color background
+	);
+
+	bool on_key(const KeyEvent key) override;
+	bool on_touch(const TouchEvent event) override;
 };
 
 class OptionsField : public Widget {
@@ -266,6 +263,7 @@ public:
 	using options_t = std::vector<option_t>;
 
 	std::function<void(size_t, value_t)> on_change;
+	std::function<void(void)> on_show_options;
 
 	OptionsField(Point parent_pos, size_t length, options_t options);
 
@@ -276,6 +274,7 @@ public:
 
 	void paint(Painter& painter) override;
 
+	void on_focus() override;
 	bool on_encoder(const EncoderEvent delta) override;
 	bool on_touch(const TouchEvent event) override;
 

firmware/tools/make_baseband_file.py

@@ -55,8 +55,9 @@ sys.argv = sys.argv[1:]
 
 # Format for module file:
 # Magic (4), Version (2), Length (4), Name (16), MD5 (16), Description (214)
-# Module binary...
-# MD5 (16)
+# 0x00 pad bytes (256)
+# Module binary (padded to 32768-16)
+# MD5 (16) again, so that module code can read it (dirty...)
 
 for args in sys.argv:
 	data = read_image(args + '/build/' + args + '.bin')
@@ -66,7 +67,7 @@ for args in sys.argv:
 	info = 'PPM '
 	
 	# Version
-	info += struct.pack('H', 1)
+	info += struct.pack('H', 2)
 	
 	# Length
 	info += struct.pack('I', len(data))
@@ -94,9 +95,12 @@ for args in sys.argv:
 	description += (data_default_byte * pad_size)
 	info += description
 	
-	# Padding
+	# Header padding to fit in SD card sector
+	info += (data_default_byte * 256)
+	
+	# Binary padding
 	data = info + data
-	pad_size = (32768 + 256 - 16) - len(data)
+	pad_size = (32768 + 512 - 16) - len(data)
 	data += (data_default_byte * pad_size)
 	data += digest
 	write_file(data, args + '.bin')
@@ -108,6 +112,6 @@ for args in sys.argv:
 	h_data += 'const char md5_' + args.replace('-','_') + '[16] = {' + md5sum + '};\n'
 	
 	# Update original binary with MD5 footprint
-	write_file(data[256:(32768+256)], args + '/build/' + args + '.bin')
+	write_file(data[512:(32768+512)], args + '/build/' + args + '.bin')
 
 write_file(h_data, 'common/modules.h')