GPS Sim

firmware/application/apps/gps_sim_app.cpp

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+/*
+ * Copyright (C) 2016 Jared Boone, ShareBrained Technology, Inc.
+ * Copyright (C) 2016 Furrtek
+ * Copyright (C) 2020 Shao
+ *
+ * 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 "gps_sim_app.hpp"
+#include "string_format.hpp"
+
+#include "ui_fileman.hpp"
+#include "io_file.hpp"
+
+#include "baseband_api.hpp"
+#include "portapack.hpp"
+#include "portapack_persistent_memory.hpp"
+
+using namespace portapack;
+
+namespace ui {
+
+void GpsSimAppView::set_ready() {
+	ready_signal = true;
+}
+
+void GpsSimAppView::on_file_changed(std::filesystem::path new_file_path) {
+	File data_file, info_file;
+	char file_data[257];
+	
+	// Get file size
+	auto data_open_error = data_file.open("/" + new_file_path.string());
+	if (data_open_error.is_valid()) {
+		file_error();
+		return;
+	}
+	
+	file_path = new_file_path;
+	
+	// Get original record frequency if available
+	std::filesystem::path info_file_path = file_path;
+	info_file_path.replace_extension(u".TXT");
+	
+	sample_rate = 500000;
+	
+	auto info_open_error = info_file.open("/" + info_file_path.string());
+	if (!info_open_error.is_valid()) {
+		memset(file_data, 0, 257);
+		auto read_size = info_file.read(file_data, 256);
+		if (!read_size.is_error()) {
+			auto pos1 = strstr(file_data, "center_frequency=");
+			if (pos1) {
+				pos1 += 17;
+				field_frequency.set_value(strtoll(pos1, nullptr, 10));
+			}
+			
+			auto pos2 = strstr(file_data, "sample_rate=");
+			if (pos2) {
+				pos2 += 12;
+				sample_rate = strtoll(pos2, nullptr, 10);
+			}
+		}
+	}
+	
+	text_sample_rate.set(unit_auto_scale(sample_rate, 3, 1) + "Hz");
+	
+	auto file_size = data_file.size();
+	auto duration = (file_size * 1000) / (1 * 2 * sample_rate);
+	
+	progressbar.set_max(file_size);
+	text_filename.set(file_path.filename().string().substr(0, 12));
+	text_duration.set(to_string_time_ms(duration));
+	
+	button_play.focus();
+}
+
+void GpsSimAppView::on_tx_progress(const uint32_t progress) {
+	progressbar.set_value(progress);
+}
+
+void GpsSimAppView::focus() {
+	button_open.focus();
+}
+
+void GpsSimAppView::file_error() {
+	nav_.display_modal("Error", "File read error.");
+}
+
+bool GpsSimAppView::is_active() const {
+	return (bool)replay_thread;
+}
+
+void GpsSimAppView::toggle() {
+	if( is_active() ) {
+		stop(false);
+	} else {
+		start();
+	}
+}
+
+void GpsSimAppView::start() {
+	stop(false);
+
+	std::unique_ptr<stream::Reader> reader;
+	
+	auto p = std::make_unique<FileReader>();
+	auto open_error = p->open(file_path);
+	if( open_error.is_valid() ) {
+		file_error();
+	} else {
+		reader = std::move(p);
+	}
+
+	if( reader ) {
+		button_play.set_bitmap(&bitmap_stop);
+		baseband::set_sample_rate(sample_rate );
+		
+		replay_thread = std::make_unique<ReplayThread>(
+			std::move(reader),
+			read_size, buffer_count,
+			&ready_signal,
+			[](uint32_t return_code) {
+				ReplayThreadDoneMessage message { return_code };
+				EventDispatcher::send_message(message);
+			}
+		);
+	}
+	
+	radio::enable({
+		receiver_model.tuning_frequency(),
+		sample_rate ,
+		baseband_bandwidth,
+		rf::Direction::Transmit,
+		receiver_model.rf_amp(),
+		static_cast<int8_t>(receiver_model.lna()),
+		static_cast<int8_t>(receiver_model.vga())
+	});
+}
+
+void GpsSimAppView::stop(const bool do_loop) {
+	if( is_active() )
+		replay_thread.reset();
+	
+	if (do_loop && check_loop.value()) {
+		start();
+	} else {
+		radio::disable();
+		button_play.set_bitmap(&bitmap_play);
+	}
+	
+	ready_signal = false;
+}
+
+void GpsSimAppView::handle_replay_thread_done(const uint32_t return_code) {
+	if (return_code == ReplayThread::END_OF_FILE) {
+		stop(true);
+	} else if (return_code == ReplayThread::READ_ERROR) {
+		stop(false);
+		file_error();
+	}
+	
+	progressbar.set_value(0);
+}
+
+GpsSimAppView::GpsSimAppView(
+	NavigationView& nav
+) : nav_ (nav)
+{
+	baseband::run_image(portapack::spi_flash::image_tag_gps);
+
+	add_children({
+		&labels,
+		&button_open,
+		&text_filename,
+		&text_sample_rate,
+		&text_duration,
+		&progressbar,
+		&field_frequency,
+		&field_lna,
+		&field_rf_amp,
+		&check_loop,
+		&button_play,
+		&waterfall,
+	});
+	
+	field_frequency.set_value(target_frequency());
+	field_frequency.set_step(receiver_model.frequency_step());
+	field_frequency.on_change = [this](rf::Frequency f) {
+		this->on_target_frequency_changed(f);
+	};
+	field_frequency.on_edit = [this, &nav]() {
+		// TODO: Provide separate modal method/scheme?
+		auto new_view = nav.push<FrequencyKeypadView>(this->target_frequency());
+		new_view->on_changed = [this](rf::Frequency f) {
+			this->on_target_frequency_changed(f);
+			this->field_frequency.set_value(f);
+		};
+	};
+
+	field_frequency.set_step(5000);
+	
+	button_play.on_select = [this](ImageButton&) {
+		this->toggle();
+	};
+	
+	button_open.on_select = [this, &nav](Button&) {
+		auto open_view = nav.push<FileLoadView>(".C8");
+		open_view->on_changed = [this](std::filesystem::path new_file_path) {
+			on_file_changed(new_file_path);
+		};
+	};
+}
+
+GpsSimAppView::~GpsSimAppView() {
+	radio::disable();
+	baseband::shutdown();
+}
+
+void GpsSimAppView::on_hide() {
+	// TODO: Terrible kludge because widget system doesn't notify Waterfall that
+	// it's being shown or hidden.
+	waterfall.on_hide();
+	View::on_hide();
+}
+
+void GpsSimAppView::set_parent_rect(const Rect new_parent_rect) {
+	View::set_parent_rect(new_parent_rect);
+
+	const ui::Rect waterfall_rect { 0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height };
+	waterfall.set_parent_rect(waterfall_rect);
+}
+
+void GpsSimAppView::on_target_frequency_changed(rf::Frequency f) {
+	set_target_frequency(f);
+}
+
+void GpsSimAppView::set_target_frequency(const rf::Frequency new_value) {
+	persistent_memory::set_tuned_frequency(new_value);;
+}
+
+rf::Frequency GpsSimAppView::target_frequency() const {
+	return persistent_memory::tuned_frequency();
+}
+
+} /* namespace ui */