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

/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 *
 * 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 "ui_rds.hpp"

#include "portapack.hpp"
#include "baseband_api.hpp"
#include "cpld_update.hpp"
#include "portapack_shared_memory.hpp"

#include <cstring>

using namespace portapack;
using namespace rds;

namespace ui {

RDSPSNView::RDSPSNView(
    NavigationView& nav,
    Rect parent_rect)
    : OptionTabView(parent_rect) {
    set_type("PSN");

    add_children({&labels,
                  &text_psn,
                  &button_set,
                  &check_mono_stereo,
                  &check_TA,
                  &check_MS});

    set_enabled(true);

    check_TA.set_value(true);

    check_mono_stereo.on_select = [this](Checkbox&, bool value) {
        mono_stereo = value;
    };
    check_TA.on_select = [this](Checkbox&, bool value) {
        TA = value;
    };
    check_MS.on_select = [this](Checkbox&, bool value) {
        MS = value;
    };

    button_set.on_select = [this, &nav](Button&) {
        text_prompt(
            nav,
            PSN,
            8,
            [this](std::string& s) {
                text_psn.set(s);
            });
    };
}

RDSRadioTextView::RDSRadioTextView(
    NavigationView& nav,
    Rect parent_rect)
    : OptionTabView(parent_rect) {
    set_type("Radiotext");

    add_children({&labels,
                  &button_set,
                  &text_radiotext});

    button_set.on_select = [this, &nav](Button&) {
        text_prompt(
            nav,
            radiotext,
            28,
            [this](std::string& s) {
                text_radiotext.set(s);
            });
    };
}

RDSDateTimeView::RDSDateTimeView(
    Rect parent_rect)
    : OptionTabView(parent_rect) {
    set_type("date & time");

    add_children({&labels});
}

RDSAudioView::RDSAudioView(
    Rect parent_rect)
    : OptionTabView(parent_rect) {
    set_type("audio");

    add_children({&labels});
}

RDSThread::RDSThread(
    std::vector<RDSGroup>** frames)
    : frames_{std::move(frames)} {
    thread = chThdCreateFromHeap(NULL, 1024, NORMALPRIO + 10, RDSThread::static_fn, this);
}

RDSThread::~RDSThread() {
    if (thread) {
        chThdTerminate(thread);
        chThdWait(thread);
        thread = nullptr;
    }
}

msg_t RDSThread::static_fn(void* arg) {
    auto obj = static_cast<RDSThread*>(arg);
    obj->run();
    return 0;
}

void RDSThread::run() {
    std::vector<RDSGroup>* frame_ptr;
    size_t block_count, c;
    uint32_t* tx_data_u32 = (uint32_t*)shared_memory.bb_data.data;
    uint32_t frame_index = 0;

    while (!chThdShouldTerminate()) {
        do {
            frame_ptr = frames_[frame_index];

            if (frame_index == 2) {
                frame_index = 0;
            } else {
                frame_index++;
            }
        } while (!(block_count = frame_ptr->size() * 4));

        for (c = 0; c < block_count; c++)
            tx_data_u32[c] = frame_ptr->at(c >> 2).block[c & 3];

        baseband::set_rds_data(block_count * 26);

        chThdSleepMilliseconds(1000);
    }
}

void RDSView::focus() {
    tab_view.focus();
}

RDSView::~RDSView() {
    // save app settings
    app_settings.tx_frequency = transmitter_model.tuning_frequency();
    settings.save("tx_rds", &app_settings);

    transmitter_model.disable();
    hackrf::cpld::load_sram_no_verify();  // to leave all RX ok, without ghost signal problem at the exit.
    baseband::shutdown();                 // better this function at the end, not load_sram() that sometimes produces hang up.
}

void RDSView::start_tx() {
    rds_flags.PI_code = sym_pi_code.value_hex_u64();
    rds_flags.PTY = options_pty.selected_index_value();
    rds_flags.DI = view_PSN.mono_stereo ? 1 : 0;
    rds_flags.TP = check_TP.value();
    rds_flags.TA = view_PSN.TA;
    rds_flags.MS = view_PSN.MS;

    if (view_PSN.is_enabled())
        gen_PSN(frame_psn, view_PSN.PSN, &rds_flags);
    else
        frame_psn.clear();

    if (view_radiotext.is_enabled())
        gen_RadioText(frame_radiotext, view_radiotext.radiotext, 0, &rds_flags);
    else
        frame_radiotext.clear();

    // DEBUG
    if (view_datetime.is_enabled())
        gen_ClockTime(frame_datetime, &rds_flags, 2016, 12, 1, 9, 23, 2);
    else
        frame_datetime.clear();

    transmitter_model.set_sampling_rate(2280000U);
    transmitter_model.set_baseband_bandwidth(1750000);
    transmitter_model.enable();

    tx_thread = std::make_unique<RDSThread>(frames);
}

RDSView::RDSView(
    NavigationView& nav)
    : nav_{nav} {
    baseband::run_image(portapack::spi_flash::image_tag_rds);

    add_children({
        &tab_view,
        &labels,
        &sym_pi_code,
        &check_TP,
        &options_pty,
        &view_PSN,
        &view_radiotext,
        &view_datetime,
        &view_audio,
        &tx_view,
    });

    // load app settings
    auto rc = settings.load("tx_rds", &app_settings);
    if (rc == SETTINGS_OK) {
        transmitter_model.set_rf_amp(app_settings.tx_amp);
        transmitter_model.set_channel_bandwidth(app_settings.channel_bandwidth);
        transmitter_model.set_tuning_frequency(app_settings.tx_frequency);
        transmitter_model.set_tx_gain(app_settings.tx_gain);
    }
    check_TP.set_value(true);

    sym_pi_code.set_sym(0, 0xF);
    sym_pi_code.set_sym(1, 0x3);
    sym_pi_code.set_sym(2, 0xE);
    sym_pi_code.set_sym(3, 0x0);
    sym_pi_code.on_change = [this]() {
        rds_flags.PI_code = sym_pi_code.value_hex_u64();
    };

    options_pty.set_selected_index(0);  // None

    tx_view.on_edit_frequency = [this, &nav]() {
        auto new_view = nav.push<FrequencyKeypadView>(receiver_model.tuning_frequency());
        new_view->on_changed = [this](rf::Frequency f) {
            receiver_model.set_tuning_frequency(f);
        };
    };

    tx_view.on_start = [this]() {
        start_tx();
        tx_view.set_transmitting(true);
        txing = true;
    };

    tx_view.on_stop = [this]() {
        // Kill tx_thread here ?
        tx_view.set_transmitting(false);
        transmitter_model.disable();
        txing = false;
    };
}

} /* namespace ui */