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https://github.com/portapack-mayhem/mayhem-firmware.git
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furrtek
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/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "tpms_app.hpp"
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#include "event_m0.hpp"
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#include "portapack.hpp"
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using namespace portapack;
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#include "string_format.hpp"
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#include "crc.hpp"
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#include "utility.hpp"
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namespace tpms {
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namespace format {
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std::string type(Reading::Type type) {
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return to_string_dec_uint(toUType(type), 2);
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}
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std::string id(TransponderID id) {
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return to_string_hex(id.value(), 8);
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}
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std::string pressure(Pressure pressure) {
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return to_string_dec_int(pressure.kilopascal(), 3);
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}
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std::string temperature(Temperature temperature) {
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return to_string_dec_int(temperature.celsius(), 3);
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}
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} /* namespace format */
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Timestamp Packet::received_at() const {
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return packet_.timestamp();
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}
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ManchesterFormatted Packet::symbols_formatted() const {
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return format_manchester(decoder_);
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}
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Optional<Reading> Packet::reading() const {
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const auto length = crc_valid_length();
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switch(length) {
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case 64:
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return Reading {
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Reading::Type::FLM_64,
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reader_.read(0, 32),
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Pressure { static_cast<int>(reader_.read(32, 8)) * 4 / 3 },
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Temperature { static_cast<int>(reader_.read(40, 8) & 0x7f) - 50 }
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};
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case 72:
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return Reading {
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Reading::Type::FLM_72,
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reader_.read(0, 32),
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Pressure { static_cast<int>(reader_.read(40, 8)) * 4 / 3 },
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Temperature { static_cast<int>(reader_.read(48, 8)) - 50 }
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};
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case 80:
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return Reading {
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Reading::Type::FLM_80,
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reader_.read(8, 32),
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Pressure { static_cast<int>(reader_.read(48, 8)) * 4 / 3 },
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Temperature { static_cast<int>(reader_.read(56, 8)) - 50 }
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};
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default:
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return { };
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}
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}
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size_t Packet::crc_valid_length() const {
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constexpr uint32_t checksum_bytes = 0b1111111;
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constexpr uint32_t crc_72_bytes = 0b111111111;
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constexpr uint32_t crc_80_bytes = 0b1111111110;
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std::array<uint8_t, 10> bytes;
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for(size_t i=0; i<bytes.size(); i++) {
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bytes[i] = reader_.read(i * 8, 8);
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}
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uint32_t checksum = 0;
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CRC<uint8_t> crc_72 { 0x01, 0x00 };
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CRC<uint8_t> crc_80 { 0x01, 0x00 };
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for(size_t i=0; i<bytes.size(); i++) {
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const uint32_t byte_mask = 1 << i;
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const auto byte = bytes[i];
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if( checksum_bytes & byte_mask ) {
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checksum += byte;
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}
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if( crc_72_bytes & byte_mask ) {
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crc_72.process_byte(byte);
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}
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if( crc_80_bytes & byte_mask ) {
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crc_80.process_byte(byte);
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}
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}
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if( crc_80.checksum() == 0 ) {
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return 80;
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} else if( crc_72.checksum() == 0 ) {
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return 72;
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} else if( (checksum & 0xff) == bytes[7] ) {
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return 64;
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} else {
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return 0;
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}
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}
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} /* namespace tpms */
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void TPMSLogger::on_packet(const tpms::Packet& packet) {
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const auto hex_formatted = packet.symbols_formatted();
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if( log_file.is_ready() ) {
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const auto tuning_frequency = receiver_model.tuning_frequency();
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// TODO: function doesn't take uint64_t, so when >= 1<<32, weirdness will ensue!
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const auto tuning_frequency_str = to_string_dec_uint(tuning_frequency, 10);
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std::string entry = tuning_frequency_str + " FSK 38.4 19.2 " + hex_formatted.data + "/" + hex_formatted.errors;
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log_file.write_entry(packet.received_at(), entry);
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}
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}
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const TPMSRecentEntry::Key TPMSRecentEntry::invalid_key = { tpms::Reading::Type::None, 0 };
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void TPMSRecentEntry::update(const tpms::Reading& reading) {
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received_count++;
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if( reading.pressure().is_valid() ) {
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last_pressure = reading.pressure();
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}
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if( reading.temperature().is_valid() ) {
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last_temperature = reading.temperature();
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}
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}
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namespace ui {
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static const std::array<std::pair<std::string, size_t>, 5> tpms_columns { {
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{ "Tp", 2 },
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{ "ID", 8 },
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{ "kPa", 3 },
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{ "C", 3 },
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{ "Cnt", 3 },
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} };
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template<>
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void RecentEntriesView<TPMSRecentEntries>::draw_header(
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const Rect& target_rect,
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Painter& painter,
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const Style& style
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) {
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auto x = 0;
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for(const auto& column : tpms_columns) {
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const auto width = column.second;
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auto text = column.first;
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if( width > text.length() ) {
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text.append(width - text.length(), ' ');
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}
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painter.draw_string({ x, target_rect.pos.y }, style, text);
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x += (width * 8) + 8;
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}
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}
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template<>
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void RecentEntriesView<TPMSRecentEntries>::draw(
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const Entry& entry,
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const Rect& target_rect,
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Painter& painter,
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const Style& style,
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const bool is_selected
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) {
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const auto& draw_style = is_selected ? style.invert() : style;
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std::string line = tpms::format::type(entry.type) + " " + tpms::format::id(entry.id);
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if( entry.last_pressure.is_valid() ) {
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line += " " + tpms::format::pressure(entry.last_pressure.value());
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} else {
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line += " " " ";
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}
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if( entry.last_temperature.is_valid() ) {
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line += " " + tpms::format::temperature(entry.last_temperature.value());
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} else {
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line += " " " ";
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}
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if( entry.received_count > 999 ) {
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line += " +++";
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} else {
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line += " " + to_string_dec_uint(entry.received_count, 3);
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}
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line.resize(target_rect.width() / 8, ' ');
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painter.draw_string(target_rect.pos, draw_style, line);
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}
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TPMSAppView::TPMSAppView(NavigationView&) {
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add_children({ {
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&recent_entries_view,
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} });
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EventDispatcher::message_map().register_handler(Message::ID::TPMSPacket,
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[this](Message* const p) {
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const auto message = static_cast<const TPMSPacketMessage*>(p);
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const tpms::Packet packet { message->packet };
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this->on_packet(packet);
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}
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);
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receiver_model.set_baseband_configuration({
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.mode = 5,
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.sampling_rate = 2457600,
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.decimation_factor = 1,
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});
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receiver_model.set_baseband_bandwidth(1750000);
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receiver_model.set_rf_amp(false);
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receiver_model.set_lna(32);
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receiver_model.set_vga(32);
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receiver_model.set_tuning_frequency(315000000);
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receiver_model.enable();
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}
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TPMSAppView::~TPMSAppView() {
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receiver_model.disable();
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EventDispatcher::message_map().unregister_handler(Message::ID::TPMSPacket);
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}
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void TPMSAppView::focus() {
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recent_entries_view.focus();
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}
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void TPMSAppView::set_parent_rect(const Rect new_parent_rect) {
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View::set_parent_rect(new_parent_rect);
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recent_entries_view.set_parent_rect({ 0, 0, new_parent_rect.width(), new_parent_rect.height() });
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}
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void TPMSAppView::on_packet(const tpms::Packet& packet) {
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logger.on_packet(packet);
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const auto reading_opt = packet.reading();
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if( reading_opt.is_valid() ) {
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const auto reading = reading_opt.value();
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recent.on_packet({ reading.type(), reading.id() }, reading);
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recent_entries_view.set_dirty();
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}
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}
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void TPMSAppView::on_show_list() {
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recent_entries_view.hidden(false);
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recent_entries_view.focus();
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}
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} /* namespace ui */
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