portapack-mayhem/firmware/application/apps/ui_aprs_tx.cpp

/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2017 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_aprs_tx.hpp"
#include "ui_alphanum.hpp"

#include "aprs.hpp"
#include "string_format.hpp"
#include "portapack.hpp"
#include "baseband_api.hpp"
#include "portapack_shared_memory.hpp"
#include "portapack_persistent_memory.hpp"

#include <cstring>
#include <stdio.h>

using namespace aprs;
using namespace portapack;

namespace ui {

void APRSTXView::focus() {
    tx_view.focus();
}

APRSTXView::~APRSTXView() {
    transmitter_model.disable();
    baseband::shutdown();
}

void APRSTXView::start_tx() {
    // TODO: Clean up this API to take string_views to avoid allocations.
    make_aprs_frame(
        sym_source.to_string().c_str(), num_ssid_source.value(),
        sym_dest.to_string().c_str(), num_ssid_dest.value(),
        payload);

    // uint8_t * bb_data_ptr = shared_memory.bb_data.data;
    // text_payload.set(to_string_hex_array(bb_data_ptr + 56, 15));

    transmitter_model.set_baseband_bandwidth(1'750'000);  // APRS Automatic Packet Reporting System (APRS).AFSK with NBFM , max BW= 12k5 , then TX LPF min 1M75
    transmitter_model.enable();

    baseband::set_afsk_data(
        AFSK_TX_SAMPLERATE / 1200,
        1200,
        2200,
        1,
        10000,  // APRS uses fixed 10k bandwidth
        8);
}

void APRSTXView::on_tx_progress(const uint32_t progress, const bool done) {
    (void)progress;

    if (done) {
        transmitter_model.disable();
        tx_view.set_transmitting(false);
    }
}

APRSTXView::APRSTXView(NavigationView& nav) {
    baseband::run_image(portapack::spi_flash::image_tag_afsk);

    add_children({&labels,
                  &sym_source,
                  &num_ssid_source,
                  &sym_dest,
                  &num_ssid_dest,
                  &text_payload,
                  &button_set,
                  &tx_view});

    button_set.on_select = [this, &nav](Button&) {
        text_prompt(
            nav,
            payload,
            30,
            [this](std::string& s) {
                text_payload.set(s);
            });
    };

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

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

    tx_view.on_stop = [this]() {
        tx_view.set_transmitting(false);
        transmitter_model.disable();
    };
}

} /* namespace ui */