mayhem-firmware/firmware/application/apps/tpms_app.cpp

/*
 * 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.
 */

#include "tpms_app.hpp"

#include "baseband_api.hpp"

#include "portapack.hpp"
using namespace portapack;

#include "string_format.hpp"

#include "utility.hpp"

namespace tpms {

namespace format {

static bool use_kpa = true;
static bool use_celsius = true;

std::string type(Reading::Type type) {
    return to_string_dec_uint(toUType(type), 2);
}

std::string id(TransponderID id) {
    return to_string_hex(id.value(), 8);
}

std::string pressure(Pressure pressure) {
    return to_string_dec_int(use_kpa ? pressure.kilopascal() : pressure.psi(), 3);
}

std::string temperature(Temperature temperature) {
    return to_string_dec_int(use_celsius ? temperature.celsius() : temperature.fahrenheit(), 3);
}

std::string flags(Flags flags) {
    return to_string_hex(flags, 2);
}

static std::string signal_type(SignalType signal_type) {
    switch (signal_type) {
        case SignalType::FSK_19k2_Schrader:
            return "FSK 38400 19200 Schrader";
        case SignalType::OOK_8k192_Schrader:
            return "OOK - 8192 Schrader";
        case SignalType::OOK_8k4_Schrader:
            return "OOK - 8400 Schrader";
        default:
            return "- - - -";
    }
}

} /* namespace format */

} /* namespace tpms */

void TPMSLogger::on_packet(const tpms::Packet& packet, const uint32_t target_frequency) {
    const auto hex_formatted = packet.symbols_formatted();

    // TODO: function doesn't take uint64_t, so when >= 1<<32, weirdness will ensue!
    const auto tuning_frequency_str = to_string_dec_uint(target_frequency, 10);

    std::string entry = tuning_frequency_str + " " + tpms::format::signal_type(packet.signal_type()) + " " + hex_formatted.data + "/" + hex_formatted.errors;
    log_file.write_entry(packet.received_at(), entry);
}

const TPMSRecentEntry::Key TPMSRecentEntry::invalid_key = {tpms::Reading::Type::None, 0};

void TPMSRecentEntry::update(const tpms::Reading& reading) {
    received_count++;

    if (reading.pressure().is_valid()) {
        last_pressure = reading.pressure();
    }
    if (reading.temperature().is_valid()) {
        last_temperature = reading.temperature();
    }
    if (reading.flags().is_valid()) {
        last_flags = reading.flags();
    }
}

namespace ui {

template <>
void RecentEntriesTable<TPMSRecentEntries>::draw(
    const Entry& entry,
    const Rect& target_rect,
    Painter& painter,
    const Style& style) {
    std::string line = tpms::format::type(entry.type) + " " + tpms::format::id(entry.id);

    if (entry.last_pressure.is_valid()) {
        line += "  " + tpms::format::pressure(entry.last_pressure.value());
    } else {
        line +=
            "  "
            "   ";
    }

    if (entry.last_temperature.is_valid()) {
        line += "  " + tpms::format::temperature(entry.last_temperature.value());
    } else {
        line +=
            "  "
            "   ";
    }

    if (entry.received_count > 999) {
        line += " +++";
    } else {
        line += " " + to_string_dec_uint(entry.received_count, 3);
    }

    if (entry.last_flags.is_valid()) {
        line += " " + tpms::format::flags(entry.last_flags.value());
    } else {
        line +=
            " "
            "  ";
    }

    line.resize(target_rect.width() / 8, ' ');
    painter.draw_string(target_rect.location(), style, line);
}

TPMSAppView::TPMSAppView(NavigationView&) {
    baseband::run_image(portapack::spi_flash::image_tag_tpms);

    add_children({&rssi,
                  &channel,
                  &options_band,
                  &options_pressure,
                  &options_temperature,
                  &field_rf_amp,
                  &field_lna,
                  &field_vga,
                  &recent_entries_view});

    // load app settings
    auto rc = settings.load("rx_tpms", &app_settings);
    if (rc == SETTINGS_OK) {
        field_lna.set_value(app_settings.lna);
        field_vga.set_value(app_settings.vga);
        field_rf_amp.set_value(app_settings.rx_amp);
        options_band.set_by_value(app_settings.rx_frequency);
    } else
        options_band.set_by_value(receiver_model.tuning_frequency());

    receiver_model.set_tuning_frequency(tuning_frequency());
    receiver_model.set_sampling_rate(sampling_rate);
    receiver_model.set_baseband_bandwidth(baseband_bandwidth);
    receiver_model.enable();  // Before using radio::enable(), but not updating Ant.DC-Bias.

    /*	radio::enable({
                tuning_frequency(),
                sampling_rate,
                baseband_bandwidth,
                rf::Direction::Receive,
                receiver_model.rf_amp(),
                static_cast<int8_t>(receiver_model.lna()),
                static_cast<int8_t>(receiver_model.vga()),
        }); */

    options_band.on_change = [this](size_t, OptionsField::value_t v) {
        this->on_band_changed(v);
    };
    options_band.set_by_value(target_frequency());

    options_pressure.on_change = [this](size_t, int32_t i) {
        tpms::format::use_kpa = !i;
        update_view();
    };

    options_pressure.set_selected_index(0, true);

    options_temperature.on_change = [this](size_t, int32_t i) {
        tpms::format::use_celsius = !i;
        update_view();
    };

    options_temperature.set_selected_index(0, true);

    logger = std::make_unique<TPMSLogger>();
    if (logger) {
        logger->append(LOG_ROOT_DIR "/TPMS.TXT");
    }
}

TPMSAppView::~TPMSAppView() {
    // save app settings
    app_settings.rx_frequency = target_frequency_;
    settings.save("rx_tpms", &app_settings);

    receiver_model.disable();  // to switch off all, including DC bias and change flag enabled_

    baseband::shutdown();
}

void TPMSAppView::focus() {
    options_band.focus();
}

void TPMSAppView::update_view() {
    recent_entries_view.set_parent_rect(view_normal_rect);
}

void TPMSAppView::set_parent_rect(const Rect new_parent_rect) {
    View::set_parent_rect(new_parent_rect);

    view_normal_rect = {0, header_height, new_parent_rect.width(), new_parent_rect.height() - header_height};

    update_view();
}

void TPMSAppView::on_packet(const tpms::Packet& packet) {
    if (logger) {
        logger->on_packet(packet, target_frequency());
    }

    const auto reading_opt = packet.reading();
    if (reading_opt.is_valid()) {
        const auto reading = reading_opt.value();
        auto& entry = ::on_packet(recent, TPMSRecentEntry::Key{reading.type(), reading.id()});
        entry.update(reading);
        recent_entries_view.set_dirty();
    }
}

void TPMSAppView::on_show_list() {
    recent_entries_view.hidden(false);
    recent_entries_view.focus();
}

void TPMSAppView::on_band_changed(const uint32_t new_band_frequency) {
    set_target_frequency(new_band_frequency);
}

void TPMSAppView::set_target_frequency(const uint32_t new_value) {
    target_frequency_ = new_value;
    radio::set_tuning_frequency(tuning_frequency());
}

uint32_t TPMSAppView::target_frequency() const {
    return target_frequency_;
}

uint32_t TPMSAppView::tuning_frequency() const {
    return target_frequency() - (sampling_rate / 4);
}

} /* namespace ui */