Added options for tuning CLKOUT freq.

- Now we have variable CLKOUT.
- CLKOUT can be set between 10kHz and 60MHz.
(The output signal will become mostly sine shape when reaching 50MHz.)
- Click on freq setting field to change tuning step.

firmware/application/apps/ui_settings.cpp

@@ -145,6 +145,9 @@ SetRadioView::SetRadioView(
 
 	add_children({
 		&check_clkout,
+		&field_clkout_freq,
+		&labels_clkout_khz,
+		&value_freq_step,
 		&labels_bias,
 		&check_bias,
 		&button_done,
@@ -165,6 +168,31 @@ SetRadioView::SetRadioView(
 		EventDispatcher::send_message(message);
 	};
 
+	field_clkout_freq.set_value(portapack::persistent_memory::clkout_freq());
+	value_freq_step.set_style(&style_text);
+
+	field_clkout_freq.on_select = [this](NumberField&) {
+		freq_step_khz++;
+		if(freq_step_khz > 3) {
+			freq_step_khz = 0;
+		}
+		switch(freq_step_khz) {
+			case 0:
+				value_freq_step.set("   |");
+				break;
+			case 1:
+				value_freq_step.set("  | ");
+				break;
+			case 2:
+				value_freq_step.set(" |  ");
+				break;
+			case 3:
+				value_freq_step.set("|   ");
+				break;
+		}
+		field_clkout_freq.set_step(pow(10, freq_step_khz));
+	};
+
 	check_bias.set_value(portapack::get_antenna_bias());
 	check_bias.on_select = [this](Checkbox&, bool v) {
 		portapack::set_antenna_bias(v);
@@ -175,6 +203,8 @@ SetRadioView::SetRadioView(
 	button_done.on_select = [this, &nav](Button&){
 		const auto model = this->form_collect();
 		portapack::persistent_memory::set_correction_ppb(model.ppm * 1000);
+		portapack::persistent_memory::set_clkout_freq(model.freq);
+		clock_manager.enable_clock_output(portapack::persistent_memory::clkout_enabled());
 		nav.pop();
 	};
 }
@@ -190,6 +220,7 @@ void SetRadioView::form_init(const SetFrequencyCorrectionModel& model) {
 SetFrequencyCorrectionModel SetRadioView::form_collect() {
 	return {
 		.ppm = static_cast<int8_t>(field_ppm.value()),
+		.freq = static_cast<uint32_t>(field_clkout_freq.value()),
 	};
 }
 

firmware/application/apps/ui_settings.hpp

@@ -114,6 +114,7 @@ private:
 
 struct SetFrequencyCorrectionModel {
 	int8_t ppm;
+	uint32_t freq;
 };
 
 class SetRadioView : public View {
@@ -130,6 +131,7 @@ private:
 		.background = Color::black(),
 		.foreground = Color::light_grey(),
 	};
+	uint8_t freq_step_khz = 3;
 
 	Text label_source {
 		{ 0, 1 * 16, 17 * 8, 16 },
@@ -152,9 +154,26 @@ private:
 	};
 
 	Checkbox check_clkout {
-		{ 28, (6 * 16 - 4) },
+		{ 18, (6 * 16 - 4) },
-		4,
+		13,
-		"Enable 10MHz CLKOUT"
+		"Enable CLKOUT"
+	};
+
+	NumberField field_clkout_freq {
+		{ 20 * 8, 6 * 16 },
+		5,
+		{ 10, 60000 },
+		1000,
+		' '
+	};
+
+	Labels labels_clkout_khz {
+		{ { 26 * 8, 6 * 16 }, "kHz", Color::light_grey() }
+	};
+
+	Text value_freq_step {
+		{ 21 * 8, (7 * 16 ), 4 * 8, 16 },
+		"|   "
 	};
 
 	Labels labels_bias {

firmware/application/clock_manager.cpp

@@ -21,6 +21,7 @@
 
 #include "clock_manager.hpp"
 
+#include "portapack_persistent_memory.hpp"
 #include "portapack_io.hpp"
 
 #include "hackrf_hal.hpp"
@@ -467,7 +468,11 @@ void ClockManager::stop_audio_pll() {
 void ClockManager::enable_clock_output(bool enable) {
 	if(enable) {
 		clock_generator.enable_output(clock_generator_output_clkout);
-		clock_generator.set_ms_frequency(clock_generator_output_clkout, 10000000, si5351_vco_f, 0);
+		if(portapack::persistent_memory::clkout_freq() < 1000) {
+			clock_generator.set_ms_frequency(clock_generator_output_clkout, portapack::persistent_memory::clkout_freq() * 128000, si5351_vco_f, 7);
+		} else {
+			clock_generator.set_ms_frequency(clock_generator_output_clkout, portapack::persistent_memory::clkout_freq() * 1000, si5351_vco_f, 0);
+		}
 	} else {
 		clock_generator.disable_output(clock_generator_output_clkout);
 	}

firmware/common/portapack_persistent_memory.cpp

@@ -63,6 +63,10 @@ using modem_repeat_range_t = range_t<int32_t>;
 constexpr modem_repeat_range_t modem_repeat_range { 1, 99 };
 constexpr int32_t modem_repeat_reset_value { 5 };
 
+using clkout_freq_range_t = range_t<uint32_t>;
+constexpr clkout_freq_range_t clkout_freq_range { 10, 60000 };
+constexpr uint32_t clkout_freq_reset_value { 10000 };
+
 /* struct must pack the same way on M4 and M0 cores. */
 struct data_t {
 	int64_t tuned_frequency;
@@ -295,5 +299,20 @@ void set_clkout_enabled(bool enable) {
 	data->ui_config = (data->ui_config & ~0x08000000UL) | (enable << 27);
 }
 
+uint32_t clkout_freq() {
+	uint16_t freq = (data->ui_config & 0x000FFFF0) >> 4;
+	if(freq < clkout_freq_range.minimum || freq > clkout_freq_range.maximum) {
+		data->ui_config = (data->ui_config & ~0x000FFFF0) | clkout_freq_reset_value << 4;
+		return clkout_freq_reset_value;
+	}
+	else {
+		return freq;
+	}
+}
+
+void set_clkout_freq(uint32_t freq) {
+	data->ui_config = (data->ui_config & ~0x000FFFF0) | (clkout_freq_range.clip(freq) << 4);
+}
+
 } /* namespace persistent_memory */
 } /* namespace portapack */

firmware/common/portapack_persistent_memory.hpp

@@ -95,6 +95,8 @@ void set_pocsag_ignore_address(uint32_t address);
 
 bool clkout_enabled();
 void set_clkout_enabled(bool enable);
+uint32_t clkout_freq();
+void set_clkout_freq(uint32_t freq);
 
 } /* namespace persistent_memory */
 } /* namespace portapack */