Wideband FM configuration messages from M0.

firmware/application/analog_audio_app.cpp

@@ -35,13 +35,37 @@ AnalogAudioModel::AnalogAudioModel(ReceiverModel::Mode mode) {
 	});
 	receiver_model.set_baseband_bandwidth(1750000);
 
-	if( mode == ReceiverModel::Mode::NarrowbandFMAudio ) {
-		const NBFMConfigureMessage message {
-			taps_4k25_decim_0,
-			taps_4k25_decim_1,
-			taps_4k25_channel,
-			2500,
-		};
-		shared_memory.baseband_queue.push(message);
+	switch(mode) {
+	case ReceiverModel::Mode::NarrowbandFMAudio:
+		configure_nbfm();
+		break;
+
+	case ReceiverModel::Mode::WidebandFMAudio:
+		configure_wfm();
+		break;
+
+	default:
+		break;
 	}
+
+}
+
+void AnalogAudioModel::configure_nbfm() {
+	const NBFMConfigureMessage message {
+		taps_4k25_decim_0,
+		taps_4k25_decim_1,
+		taps_4k25_channel,
+		2500,
+	};
+	shared_memory.baseband_queue.push(message);
+}
+
+void AnalogAudioModel::configure_wfm() {
+	const WFMConfigureMessage message {
+		taps_200k_wfm_decim_0,
+		taps_200k_wfm_decim_1,
+		taps_64_lp_156_198,
+		75000,
+	};
+	shared_memory.baseband_queue.push(message);
 }

firmware/application/analog_audio_app.hpp

@@ -28,6 +28,10 @@
 class AnalogAudioModel {
 public:
 	AnalogAudioModel(ReceiverModel::Mode mode);
+
+private:
+	void configure_nbfm();
+	void configure_wfm();
 };
 
 namespace ui {

firmware/baseband/proc_wfm_audio.cpp

@@ -23,26 +23,11 @@
 
 #include <cstdint>
 
-WidebandFMAudio::WidebandFMAudio() {
-	constexpr size_t baseband_fs = 3072000;
-
-	constexpr size_t decim_0_input_fs = baseband_fs;
-	constexpr size_t decim_0_decimation_factor = 4;
-	constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0_decimation_factor;
-
-	constexpr size_t decim_1_input_fs = decim_0_output_fs;
-	constexpr size_t decim_1_decimation_factor = 2;
-	constexpr size_t decim_1_output_fs = decim_1_input_fs / decim_1_decimation_factor;
-
-	constexpr size_t demod_input_fs = decim_1_output_fs;
-
-	decim_0.configure(taps_200k_wfm_decim_0.taps, 33554432);
-	decim_1.configure(taps_200k_wfm_decim_1.taps, 131072);
-	demod.configure(demod_input_fs, 75000);
-	audio_filter.configure(taps_64_lp_156_198.taps);
-}
-
 void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
+	if( !configured ) {
+		return;
+	}
+
 	std::array<complex16_t, 512> dst;
 	const buffer_c16_t dst_buffer {
 		dst.data(),
@@ -94,3 +79,35 @@ void WidebandFMAudio::execute(const buffer_c8_t& buffer) {
 
 	fill_audio_buffer(audio);
 }
+
+void WidebandFMAudio::on_message(const Message* const message) {
+	switch(message->id) {
+	case Message::ID::WFMConfigure:
+		configure(*reinterpret_cast<const WFMConfigureMessage*>(message));
+		break;
+
+	default:
+		break;
+	}
+}
+
+void WidebandFMAudio::configure(const WFMConfigureMessage& message) {
+	constexpr size_t baseband_fs = 3072000;
+
+	constexpr size_t decim_0_input_fs = baseband_fs;
+	constexpr size_t decim_0_decimation_factor = 4;
+	constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0_decimation_factor;
+
+	constexpr size_t decim_1_input_fs = decim_0_output_fs;
+	constexpr size_t decim_1_decimation_factor = 2;
+	constexpr size_t decim_1_output_fs = decim_1_input_fs / decim_1_decimation_factor;
+
+	constexpr size_t demod_input_fs = decim_1_output_fs;
+
+	decim_0.configure(message.decim_0_filter.taps, 33554432);
+	decim_1.configure(message.decim_1_filter.taps, 131072);
+	demod.configure(demod_input_fs, message.deviation);
+	audio_filter.configure(message.audio_filter.taps);
+
+	configured = true;
+}

firmware/baseband/proc_wfm_audio.hpp

@@ -33,10 +33,10 @@
 
 class WidebandFMAudio : public BasebandProcessor {
 public:
-	WidebandFMAudio();
-
 	void execute(const buffer_c8_t& buffer) override;
 
+	void on_message(const Message* const message) override;
+
 private:
 	dsp::decimate::FIRC8xR16x24FS4Decim4 decim_0;
 	dsp::decimate::FIRC16xR16x16Decim2 decim_1;
@@ -48,6 +48,9 @@ private:
 
 	IIRBiquadFilter audio_hpf { audio_hpf_30hz_config };
 	IIRBiquadFilter audio_deemph { audio_deemph_2122_6_config };
+
+	bool configured { false };
+	void configure(const WFMConfigureMessage& message);
 };
 
 #endif/*__PROC_WFM_AUDIO_H__*/

firmware/common/message.hpp

@@ -53,6 +53,7 @@ public:
 		ERTPacket = 9,
 		UpdateSpectrum = 10,
 		NBFMConfigure = 11,
+		WFMConfigure = 12,
 		MAX
 	};
 
@@ -292,6 +293,27 @@ public:
 	const size_t deviation;
 };
 
+class WFMConfigureMessage : public Message {
+public:
+	constexpr WFMConfigureMessage(
+		const fir_taps_real<24>& decim_0_filter,
+		const fir_taps_real<16>& decim_1_filter,
+		const fir_taps_real<64>& audio_filter,
+		const size_t deviation
+	) : Message { ID::WFMConfigure },
+		decim_0_filter { decim_0_filter },
+		decim_1_filter { decim_1_filter },
+		audio_filter { audio_filter },
+		deviation { deviation }
+	{
+	}
+
+	const fir_taps_real<24> decim_0_filter;
+	const fir_taps_real<16> decim_1_filter;
+	const fir_taps_real<64> audio_filter;
+	const size_t deviation;
+};
+
 class MessageHandlerMap {
 public:
 	using MessageHandler = std::function<void(Message* const p)>;