mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
249 lines
6.5 KiB
C++
249 lines
6.5 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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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 "pocsag_app.hpp"
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#include "baseband_api.hpp"
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#include "portapack.hpp"
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#include "portapack_persistent_memory.hpp"
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using namespace portapack;
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#include "string_format.hpp"
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#include "utility.hpp"
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#define POCSAG_IDLE 0x7A89C197
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namespace pocsag {
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namespace format {
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static std::string signal_rate_str(SignalRate signal_rate) {
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switch(signal_rate) {
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case SignalRate::FSK512: return "FSK 512 ";
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case SignalRate::FSK1200: return "FSK 1200";
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case SignalRate::FSK2400: return "FSK 2400";
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default: return "- - - - ";
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}
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}
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} /* namespace format */
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} /* namespace pocsag */
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void POCSAGLogger::on_packet(const pocsag::POCSAGPacket& packet, const uint32_t frequency) {
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std::string entry = pocsag::format::signal_rate_str(packet.signal_rate()) + " " + to_string_dec_uint(frequency) + "Hz ";
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for (size_t c = 0; c < 16; c++)
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entry += to_string_hex(packet[c], 8) + " ";
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log_file.write_entry(packet.timestamp(), entry);
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}
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void POCSAGLogger::on_decoded(
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const pocsag::POCSAGPacket& packet,
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const std::string text,
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const uint32_t address,
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const uint32_t function) {
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log_file.write_entry(packet.timestamp(), to_string_hex(address, 8) + "(" + to_string_dec_uint(function) + "): " + text);
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}
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namespace ui {
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void POCSAGAppView::update_freq(rf::Frequency f) {
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char finalstr[10] = {0};
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options_freq.set_selected_index(0);
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set_target_frequency(f);
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portapack::persistent_memory::set_tuned_frequency(f); // Maybe not ?
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auto mhz = to_string_dec_int(f / 1000000, 4);
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auto hz100 = to_string_dec_int((f / 100) % 10000, 4, '0');
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strcat(finalstr, mhz.c_str());
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strcat(finalstr, ".");
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strcat(finalstr, hz100.c_str());
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this->button_setfreq.set_text(finalstr);
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}
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POCSAGAppView::POCSAGAppView(NavigationView& nav) {
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baseband::run_image(portapack::spi_flash::image_tag_pocsag);
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add_children({ {
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&rssi,
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&channel,
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&options_freq,
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&button_setfreq,
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&field_rf_amp,
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&field_lna,
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&field_vga,
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&console
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} });
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radio::enable({
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tuning_frequency(),
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sampling_rate,
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baseband_bandwidth,
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rf::Direction::Receive,
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receiver_model.rf_amp(),
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static_cast<int8_t>(receiver_model.lna()),
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static_cast<int8_t>(receiver_model.vga()),
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1,
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});
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options_freq.on_change = [this](size_t, OptionsField::value_t v) {
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this->on_band_changed(v);
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};
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options_freq.set_by_value(target_frequency());
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button_setfreq.on_select = [this,&nav](Button&) {
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auto new_view = nav.push<FrequencyKeypadView>(target_frequency_);
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new_view->on_changed = [this](rf::Frequency f) {
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update_freq(f);
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};
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};
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logger = std::make_unique<POCSAGLogger>();
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if( logger ) {
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logger->append("pocsag.txt");
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}
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baseband::set_pocsag();
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}
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POCSAGAppView::~POCSAGAppView() {
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radio::disable();
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baseband::shutdown();
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}
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void POCSAGAppView::focus() {
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options_freq.focus();
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}
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void POCSAGAppView::set_parent_rect(const Rect new_parent_rect) {
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View::set_parent_rect(new_parent_rect);
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}
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void POCSAGAppView::on_packet(const POCSAGPacketMessage * message) {
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bool eom = false;
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uint32_t codeword;
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std::string alphanum_text = "";
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char ascii_char;
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for (size_t i = 0; i < 16; i++) {
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codeword = message->packet[i];
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if (codeword & 0x80000000U) {
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// Message
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ascii_data |= ((codeword >> 11) & 0xFFFFF); // 20 bits
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ascii_idx += 20;
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// AAAAAAABBBBBBBCCCCCC C
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// 20 -> 13 -> 6
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// CCCCCC CDDDDDDDEEEEEEEFFFFF FF
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// 26 -> 19 -> 12 -> 5
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// FFFFF FFGGGGGGGHHHHHHHIIII III
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// 25 -> 18 -> 11 -> 4
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// IIII IIIJJJJJJJKKKKKKKLLL LLLL
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// 24 -> 17 -> 10 -> 3
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// LLL LLLLMMMMMMMNNNNNNNOO OOOOO
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// 23 -> 16 -> 9 -> 2
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// OO OOOOOPPPPPPPQQQQQQQR RRRRRR
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// 22 -> 15 -> 8 -> 1
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// R RRRRRRSSSSSSSTTTTTTT UUUUUUU
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// 21 -> 14 -> 7 -> 0
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while (ascii_idx >= 7) {
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ascii_idx -= 7;
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ascii_char = (ascii_data >> ascii_idx) & 0x7F;
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// Bottom's up
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ascii_char = (ascii_char & 0xF0) >> 4 | (ascii_char & 0x0F) << 4; // 01234567 -> 45670123
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ascii_char = (ascii_char & 0xCC) >> 2 | (ascii_char & 0x33) << 2; // 45670123 -> 67452301
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ascii_char = (ascii_char & 0xAA) >> 2 | (ascii_char & 0x55); // 67452301 -> *7654321
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alphanum_text += ascii_char;
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}
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ascii_data = ascii_data << 20;
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} else {
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// Address
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if (codeword == POCSAG_IDLE) {
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eom = true;
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} else {
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if (eom == false) {
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function = (codeword >> 11) & 3;
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address = ((codeword >> 10) & 0x1FFFF8) | ((codeword >> 1) & 7);
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}
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}
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}
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}
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if( logger ) logger->on_packet(message->packet, target_frequency());
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// Todo: same code in ui_lcr, make function in string_format !
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for(const auto c : alphanum_text) {
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if ((c < 32) || (c > 126))
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output_text += "[" + to_string_dec_uint(c) + "]";
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else
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output_text += c;
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}
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if (eom) {
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if ((address != 0) || (function != 0)) {
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if (logger) logger->on_decoded(message->packet, output_text, address, function);
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console.writeln(to_string_time(message->packet.timestamp()) + " ADDR:" + to_string_hex(address, 6) + " F:" + to_string_dec_uint(function) + " ");
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if (output_text != "") console.writeln("MSG:" + output_text);
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} else {
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console.writeln(to_string_time(message->packet.timestamp()) + " Tone only ");
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}
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output_text = "";
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ascii_idx = 0;
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ascii_data = 0;
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batch_cnt = 0;
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} else {
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batch_cnt++;
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}
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}
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void POCSAGAppView::on_band_changed(const uint32_t new_band_frequency) {
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if (new_band_frequency) set_target_frequency(new_band_frequency);
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}
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void POCSAGAppView::set_target_frequency(const uint32_t new_value) {
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target_frequency_ = new_value;
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radio::set_tuning_frequency(tuning_frequency());
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}
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uint32_t POCSAGAppView::target_frequency() const {
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return target_frequency_;
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}
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uint32_t POCSAGAppView::tuning_frequency() const {
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return target_frequency() - (sampling_rate / 4);
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}
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} /* namespace ui */
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