mayhem-firmware/firmware/application/apps/ui_coasterp.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_coasterp.hpp"

#include "baseband_api.hpp"
#include "cpld_update.hpp"
#include "portapack_persistent_memory.hpp"

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

using namespace portapack;

namespace ui {

void CoasterPagerView::focus() {
    sym_data.focus();
}

CoasterPagerView::~CoasterPagerView() {
    // save app settings
    app_settings.tx_frequency = transmitter_model.tuning_frequency();
    settings.save("tx_coaster", &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 CoasterPagerView::generate_frame() {
    uint8_t frame[19];
    uint32_t c;

    // Preamble (8 bytes)
    for (c = 0; c < 8; c++)
        frame[c] = 0x55;  // Isn't this 0xAA ?

    // Sync word
    frame[8] = 0x2D;
    frame[9] = 0xD4;

    // Data length
    frame[10] = 8;

    // Data
    for (c = 0; c < 8; c++)
        frame[c + 11] = (sym_data.get_sym(c * 2) << 4) | sym_data.get_sym(c * 2 + 1);

    // Copy for baseband
    memcpy(shared_memory.bb_data.data, frame, 19);
}

void CoasterPagerView::start_tx() {
    generate_frame();

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

    baseband::set_fsk_data(19 * 8, 2280000 / 1000, 5000, 32);
}

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

    uint16_t address = 0;
    uint32_t c;

    if (done) {
        if (tx_mode == SINGLE) {
            transmitter_model.disable();
            tx_mode = IDLE;
            tx_view.set_transmitting(false);
        } else if (tx_mode == SCAN) {
            // Increment address

            for (c = 0; c < 4; c++) {
                address <<= 4;
                address |= sym_data.get_sym(12 + c);
            }

            address++;

            for (c = 0; c < 4; c++) {
                sym_data.set_sym(15 - c, address & 0x0F);
                address >>= 4;
            }

            start_tx();
        }
    }
}

CoasterPagerView::CoasterPagerView(NavigationView& nav) {
    const uint8_t data_init[8] = {0x44, 0x01, 0x3B, 0x30, 0x30, 0x30, 0x34, 0xBC};
    uint32_t c;

    baseband::run_image(portapack::spi_flash::image_tag_fsktx);

    add_children({&labels,
                  &sym_data,
                  &checkbox_scan,
                  &text_message,
                  &tx_view});

    // load app settings
    auto rc = settings.load("tx_coaster", &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);
    }

    // Bytes to nibbles
    for (c = 0; c < 16; c++)
        sym_data.set_sym(c, (data_init[c >> 1] >> ((c & 1) ? 0 : 4)) & 0x0F);

    checkbox_scan.set_value(false);

    generate_frame();

    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]() {
        if (tx_mode == IDLE) {
            if (checkbox_scan.value())
                tx_mode = SCAN;
            else
                tx_mode = SINGLE;
            tx_view.set_transmitting(true);
            start_tx();
        }
    };

    tx_view.on_stop = [this]() {
        tx_view.set_transmitting(false);
        tx_mode = IDLE;
    };
}

} /* namespace ui */