Add wideband spectrum processor.

firmware/application/receiver_model.cpp

@@ -92,20 +92,10 @@ uint32_t ReceiverModel::sampling_rate() const {
 	return baseband_configuration.sampling_rate;
 }
 
-void ReceiverModel::set_sampling_rate(uint32_t hz) {
-	baseband_configuration.sampling_rate = hz;
-	update_baseband_configuration();
-}
-
 uint32_t ReceiverModel::modulation() const {
 	return baseband_configuration.mode;
 }
 
-void ReceiverModel::set_modulation(uint32_t v) {
-	baseband_configuration.mode = v;
-	update_modulation();
-}
-
 volume_t ReceiverModel::headphone_volume() const {
 	return headphone_volume_;
 }
@@ -120,11 +110,6 @@ uint32_t ReceiverModel::baseband_oversampling() const {
 	return baseband_configuration.decimation_factor;
 }
 
-void ReceiverModel::set_baseband_oversampling(uint32_t v) {
-	baseband_configuration.decimation_factor = v;
-	update_baseband_configuration();
-}
-
 void ReceiverModel::enable() {
 	radio::set_direction(rf::Direction::Receive);
 	update_tuning_frequency();
@@ -153,7 +138,11 @@ void ReceiverModel::disable() {
 }
 
 int32_t ReceiverModel::tuning_offset() {
-	return -(sampling_rate() / 4);
+	if( baseband_configuration.mode == 4 ) {
+		return 0;
+	} else {
+		return -(sampling_rate() / 4);
+	}
 }
 
 void ReceiverModel::update_tuning_frequency() {
@@ -176,7 +165,8 @@ void ReceiverModel::update_vga() {
 	radio::set_vga_gain(vga_gain_db_);
 }
 
-void ReceiverModel::update_modulation() {
+void ReceiverModel::set_baseband_configuration(const BasebandConfiguration config) {
+	baseband_configuration = config;
 	update_baseband_configuration();
 }
 

firmware/application/receiver_model.hpp

@@ -61,20 +61,19 @@ public:
 	void set_vga(int32_t v_db);
 
 	uint32_t sampling_rate() const;
-	void set_sampling_rate(uint32_t hz);
 
 	uint32_t modulation() const;
-	void set_modulation(uint32_t v);
 
 	volume_t headphone_volume() const;
 	void set_headphone_volume(volume_t v);
 
 	uint32_t baseband_oversampling() const;
-	void set_baseband_oversampling(uint32_t v);
 
 	void enable();
 	void disable();
 
+	void set_baseband_configuration(const BasebandConfiguration config);
+
 private:
 	rf::Frequency frequency_step_ { 25000 };
 	bool rf_amp_ { false };
@@ -96,7 +95,6 @@ private:
 	void update_lna();
 	void update_baseband_bandwidth();
 	void update_vga();
-	void update_modulation();
 	void update_baseband_configuration();
 	void update_headphone_volume();
 

firmware/application/ui_receiver.cpp

@@ -538,13 +538,35 @@ void ReceiverView::on_vga_changed(int32_t v_db) {
 }
 
 void ReceiverView::on_modulation_changed(int32_t modulation) {
-	if( modulation == 3 ) {
-		/* TODO: This is TERRIBLE!!! */
-		receiver_model.set_sampling_rate(2457600);
-	} else {
-		receiver_model.set_sampling_rate(3072000);
+	/* TODO: This is TERRIBLE!!! */
+	switch(modulation) {
+	case 3:
+		receiver_model.set_baseband_configuration({
+			.mode = modulation,
+			.sampling_rate = 2457600,
+			.decimation_factor = 4,
+		});
+		receiver_model.set_baseband_bandwidth(1750000);
+		break;
+
+	case 4:
+		receiver_model.set_baseband_configuration({
+			.mode = modulation,
+			.sampling_rate = 20000000,
+			.decimation_factor = 1,
+		});
+		receiver_model.set_baseband_bandwidth(12000000);
+		break;
+
+	default:
+		receiver_model.set_baseband_configuration({
+			.mode = modulation,
+			.sampling_rate = 3072000,
+			.decimation_factor = 4,
+		});
+		receiver_model.set_baseband_bandwidth(1750000);
+		break;
 	}
-	receiver_model.set_modulation(modulation);
 }
 
 void ReceiverView::on_show_options_frequency() {

firmware/application/ui_receiver.hpp

@@ -419,6 +419,7 @@ private:
 			{ "NFM ", 1 },
 			{ "WFM ", 2 },
 			{ "FSK ", 3 },
+			{ "SPEC", 4 },
 		}
 	};
 /*