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firmware/application/tpms_app.hpp

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+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * 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.
+ */
+
+#ifndef __TPMS_APP_H__
+#define __TPMS_APP_H__
+
+#include "ui_widget.hpp"
+#include "ui_navigation.hpp"
+
+#include "field_reader.hpp"
+#include "baseband_packet.hpp"
+#include "manchester.hpp"
+#include "log_file.hpp"
+
+#include "recent_entries.hpp"
+
+#include "optional.hpp"
+
+#include "units.hpp"
+using units::Temperature;
+using units::Pressure;
+
+namespace tpms {
+
+class TransponderID {
+public:
+	constexpr TransponderID(
+	) : id_ { 0 }
+	{
+	}
+
+	constexpr TransponderID(
+		const uint32_t id
+	) : id_ { id }
+	{
+	}
+
+	constexpr uint32_t value() const {
+		return id_;
+	}
+
+private:
+	uint32_t id_;
+};
+
+class Reading {
+public:
+	enum Type {
+		None = 0,
+		FLM_64 = 1,
+		FLM_72 = 2,
+		FLM_80 = 3,
+	};
+
+	constexpr Reading(
+	) : type_ { Type::None }
+	{
+	}
+	
+	constexpr Reading(
+		Type type,
+		TransponderID id
+	) : type_ { type },
+		id_ { id }
+	{
+	}
+	
+	constexpr Reading(
+		Type type,
+		TransponderID id,
+		Optional<Pressure> pressure = { },
+		Optional<Temperature> temperature = { }
+	) : type_ { type },
+		id_ { id },
+		pressure_ { pressure },
+		temperature_ { temperature }
+	{
+	}
+
+	Type type() const {
+		return type_;
+	}
+
+	TransponderID id() const {
+		return id_;
+	}
+
+	Optional<Pressure> pressure() const {
+		return pressure_;
+	}
+
+	Optional<Temperature> temperature() const {
+		return temperature_;
+	}
+
+private:
+	Type type_ { Type::None };
+	TransponderID id_ { 0 };
+	Optional<Pressure> pressure_ { };
+	Optional<Temperature> temperature_ { };
+};
+
+class Packet {
+public:
+	constexpr Packet(
+		const baseband::Packet& packet
+	) : packet_ { packet },
+		decoder_ { packet_, 0 },
+		reader_ { decoder_ }
+	{
+	}
+
+	Timestamp received_at() const;
+
+	ManchesterFormatted symbols_formatted() const;
+
+	Optional<Reading> reading() const;
+
+private:
+	using Reader = FieldReader<ManchesterDecoder, BitRemapNone>;
+
+	const baseband::Packet packet_;
+	const ManchesterDecoder decoder_;
+
+	const Reader reader_;
+
+	size_t crc_valid_length() const;
+};
+
+} /* namespace tpms */
+
+namespace std {
+
+constexpr bool operator==(const tpms::TransponderID& lhs, const tpms::TransponderID& rhs) {
+	return (lhs.value() == rhs.value());
+}
+
+} /* namespace std */
+
+struct TPMSRecentEntry {
+	using Key = std::pair<tpms::Reading::Type, tpms::TransponderID>;
+
+	static const Key invalid_key;
+
+	tpms::Reading::Type type { invalid_key.first };
+	tpms::TransponderID id { invalid_key.second };
+
+	size_t received_count { 0 };
+
+	Optional<Pressure> last_pressure;
+	Optional<Temperature> last_temperature;
+
+	TPMSRecentEntry(
+		const Key& key
+	) : type { key.first },
+		id { key.second }
+	{
+	}
+
+	Key key() const {
+		return { type, id };
+	}
+
+	void update(const tpms::Reading& reading);
+};
+
+using TPMSRecentEntries = RecentEntries<tpms::Reading, TPMSRecentEntry>;
+
+class TPMSLogger {
+public:
+	void on_packet(const tpms::Packet& packet);
+
+private:
+	LogFile log_file { "tpms.txt" };
+};
+
+namespace ui {
+
+using TPMSRecentEntriesView = RecentEntriesView<TPMSRecentEntries>;
+
+class TPMSAppView : public View {
+public:
+	TPMSAppView(NavigationView& nav);
+	~TPMSAppView();
+
+	void set_parent_rect(const Rect new_parent_rect) override;
+
+	// Prevent painting of region covered entirely by a child.
+	// TODO: Add flag to View that specifies view does not need to be cleared before painting.
+	void paint(Painter&) override { };
+
+	void focus() override;
+
+	std::string title() const override { return "TPMS"; };
+
+private:
+	TPMSRecentEntries recent;
+	TPMSLogger logger;
+
+	TPMSRecentEntriesView recent_entries_view { recent };
+
+	void on_packet(const tpms::Packet& packet);
+	void on_show_list();
+};
+
+} /* namespace ui */
+
+#endif/*__TPMS_APP_H__*/