Run baseband image per application.

First step toward having separate baseband images per app or function.

firmware/application/ais_app.cpp

@@ -286,6 +286,8 @@ void AISRecentEntryDetailView::set_entry(const AISRecentEntry& entry) {
 }
 
 AISAppView::AISAppView(NavigationView&) {
+	baseband::run_image(portapack::spi_flash::baseband);
+
 	add_children({ {
 		&label_channel,
 		&options_channel,
@@ -333,6 +335,8 @@ AISAppView::AISAppView(NavigationView&) {
 AISAppView::~AISAppView() {
 	baseband::stop();
 	radio::disable();
+
+	baseband::shutdown();
 }
 
 void AISAppView::focus() {

firmware/application/analog_audio_app.cpp

@@ -21,6 +21,8 @@
 
 #include "analog_audio_app.hpp"
 
+#include "baseband_api.hpp"
+
 #include "portapack.hpp"
 #include "portapack_persistent_memory.hpp"
 using namespace portapack;
@@ -77,6 +79,8 @@ NBFMOptionsView::NBFMOptionsView(
 AnalogAudioView::AnalogAudioView(
 	NavigationView& nav
 ) {
+	baseband::run_image(portapack::spi_flash::baseband);
+
 	add_children({ {
 		&rssi,
 		&channel,
@@ -145,6 +149,8 @@ AnalogAudioView::~AnalogAudioView() {
 	audio::output::stop();
 
 	receiver_model.disable();
+
+	baseband::shutdown();
 }
 
 void AnalogAudioView::on_hide() {

firmware/application/baseband_api.cpp

@@ -26,6 +26,8 @@
 
 #include "portapack_shared_memory.hpp"
 
+#include "core_control.hpp"
+
 namespace baseband {
 
 void AMConfig::apply() const {
@@ -81,6 +83,10 @@ void stop() {
 	);
 }
 
+void run_image(const portapack::spi_flash::region_t image_region) {
+	m4_init(image_region, portapack::memory::map::m4_code);
+}
+
 void shutdown() {
 	ShutdownMessage shutdown_message;
 	shared_memory.baseband_queue.push(shutdown_message);

firmware/application/baseband_api.hpp

@@ -26,6 +26,8 @@
 
 #include "dsp_fir_taps.hpp"
 
+#include "spi_image.hpp"
+
 #include <cstddef>
 
 namespace baseband {
@@ -53,6 +55,7 @@ struct WFMConfig {
 void start(BasebandConfiguration configuration);
 void stop();
 
+void run_image(const portapack::spi_flash::region_t image_region);
 void shutdown();
 
 void spectrum_streaming_start();

firmware/application/capture_app.cpp

@@ -32,6 +32,8 @@ using namespace portapack;
 namespace ui {
 
 CaptureAppView::CaptureAppView(NavigationView& nav) {
+	baseband::run_image(portapack::spi_flash::baseband);
+
 	add_children({ {
 		&rssi,
 		&channel,
@@ -83,6 +85,8 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
 CaptureAppView::~CaptureAppView() {
 	baseband::stop();
 	radio::disable();
+
+	baseband::shutdown();
 }
 
 void CaptureAppView::on_hide() {

firmware/application/ert_app.cpp

@@ -121,6 +121,8 @@ void RecentEntriesView<ERTRecentEntries>::draw(
 }
 
 ERTAppView::ERTAppView(NavigationView&) {
+	baseband::run_image(portapack::spi_flash::baseband);
+
 	add_children({ {
 		&recent_entries_view,
 	} });
@@ -149,6 +151,8 @@ ERTAppView::ERTAppView(NavigationView&) {
 ERTAppView::~ERTAppView() {
 	baseband::stop();
 	radio::disable();
+
+	baseband::shutdown();
 }
 
 void ERTAppView::focus() {

firmware/application/main.cpp

@@ -59,13 +59,6 @@ static void event_loop() {
 	};
 
 	EventDispatcher event_dispatcher { &system_view, context };
-
-	MessageHandlerRegistration message_handler_shutdown {
-		Message::ID::Shutdown,
-		[&event_dispatcher](const Message* const) {
-			event_dispatcher.request_stop();
-		}
-	};
 	MessageHandlerRegistration message_handler_display_sleep {
 		Message::ID::DisplaySleep,
 		[&event_dispatcher](const Message* const) {
@@ -88,8 +81,6 @@ int main(void) {
 
 	sdcStart(&SDCD1, nullptr);
 
-	m4_init(portapack::spi_flash::baseband, portapack::memory::map::m4_code);
-
 	controls_init();
 	lcd_frame_sync_configure();
 	rtc_interrupt_enable();

firmware/application/tpms_app.cpp

@@ -164,6 +164,8 @@ void RecentEntriesView<TPMSRecentEntries>::draw(
 }
 
 TPMSAppView::TPMSAppView(NavigationView&) {
+	baseband::run_image(portapack::spi_flash::baseband);
+
 	add_children({ {
 		&rssi,
 		&channel,
@@ -205,6 +207,8 @@ TPMSAppView::TPMSAppView(NavigationView&) {
 TPMSAppView::~TPMSAppView() {
 	baseband::stop();
 	radio::disable();
+
+	baseband::shutdown();
 }
 
 void TPMSAppView::focus() {