Added basic POCSAG receiver

Added Yes/no modal screen (for future tx warnings)
This commit is contained in:
furrtek 2016-08-23 08:45:33 +02:00
parent c2fbc0c8d5
commit 02f0271553
34 changed files with 944 additions and 42 deletions

View File

@ -179,8 +179,10 @@ set(CPPSRC
analog_audio_app.cpp
${COMMON}/ais_baseband.cpp
${COMMON}/ais_packet.cpp
${COMMON}/pocsag_packet.cpp
ais_app.cpp
tpms_app.cpp
pocsag_app.cpp
${COMMON}/tpms_packet.cpp
ert_app.cpp
${COMMON}/ert_packet.cpp
@ -236,6 +238,7 @@ set(INCDIR ${CMAKE_CURRENT_BINARY_DIR} ${COMMON} ${PORTINC} ${KERNINC} ${TESTINC
${HALINC} ${PLATFORMINC} ${BOARDINC}
${FATFSINC}
${CHIBIOS}/os/various
bitmaps
)
#

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@ -2190,6 +2190,30 @@ __/common/png_writer.cpp.s:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/__/common/png_writer.cpp.s
.PHONY : __/common/png_writer.cpp.s
__/common/pocsag_packet.obj: __/common/pocsag_packet.cpp.obj
.PHONY : __/common/pocsag_packet.obj
# target to build an object file
__/common/pocsag_packet.cpp.obj:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/__/common/pocsag_packet.cpp.obj
.PHONY : __/common/pocsag_packet.cpp.obj
__/common/pocsag_packet.i: __/common/pocsag_packet.cpp.i
.PHONY : __/common/pocsag_packet.i
# target to preprocess a source file
__/common/pocsag_packet.cpp.i:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/__/common/pocsag_packet.cpp.i
.PHONY : __/common/pocsag_packet.cpp.i
__/common/pocsag_packet.s: __/common/pocsag_packet.cpp.s
.PHONY : __/common/pocsag_packet.s
# target to generate assembly for a file
__/common/pocsag_packet.cpp.s:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/__/common/pocsag_packet.cpp.s
.PHONY : __/common/pocsag_packet.cpp.s
__/common/portapack_io.obj: __/common/portapack_io.cpp.obj
.PHONY : __/common/portapack_io.obj
@ -3030,6 +3054,30 @@ max5864.cpp.s:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/max5864.cpp.s
.PHONY : max5864.cpp.s
pocsag_app.obj: pocsag_app.cpp.obj
.PHONY : pocsag_app.obj
# target to build an object file
pocsag_app.cpp.obj:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/pocsag_app.cpp.obj
.PHONY : pocsag_app.cpp.obj
pocsag_app.i: pocsag_app.cpp.i
.PHONY : pocsag_app.i
# target to preprocess a source file
pocsag_app.cpp.i:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/pocsag_app.cpp.i
.PHONY : pocsag_app.cpp.i
pocsag_app.s: pocsag_app.cpp.s
.PHONY : pocsag_app.s
# target to generate assembly for a file
pocsag_app.cpp.s:
cd /home/furrtek/portapack-hackrf && $(MAKE) -f firmware/application/CMakeFiles/application.elf.dir/build.make firmware/application/CMakeFiles/application.elf.dir/pocsag_app.cpp.s
.PHONY : pocsag_app.cpp.s
portapack.obj: portapack.cpp.obj
.PHONY : portapack.obj
@ -4378,6 +4426,9 @@ help:
@echo "... __/common/png_writer.obj"
@echo "... __/common/png_writer.i"
@echo "... __/common/png_writer.s"
@echo "... __/common/pocsag_packet.obj"
@echo "... __/common/pocsag_packet.i"
@echo "... __/common/pocsag_packet.s"
@echo "... __/common/portapack_io.obj"
@echo "... __/common/portapack_io.i"
@echo "... __/common/portapack_io.s"
@ -4483,6 +4534,9 @@ help:
@echo "... max5864.obj"
@echo "... max5864.i"
@echo "... max5864.s"
@echo "... pocsag_app.obj"
@echo "... pocsag_app.i"
@echo "... pocsag_app.s"
@echo "... portapack.obj"
@echo "... portapack.i"
@echo "... portapack.s"

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@ -133,6 +133,13 @@ void set_ook_data(const uint32_t stream_length, const uint32_t samples_per_bit,
send_message(&message);
}
void set_pocsag() {
const POCSAGConfigureMessage message {
1200
};
send_message(&message);
}
static bool baseband_image_running = false;
void run_image(const portapack::spi_flash::image_tag_t image_tag) {

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@ -60,6 +60,7 @@ void set_afsk_data(const uint32_t afsk_samples_per_bit, const uint32_t afsk_phas
const uint8_t afsk_repeat, const uint32_t afsk_bw, const bool afsk_alt_format);
void set_ook_data(const uint32_t stream_length, const uint32_t samples_per_bit, const uint8_t repeat,
const uint32_t pause_symbols);
void set_pocsag();
void run_image(const portapack::spi_flash::image_tag_t image_tag);
void shutdown();

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@ -97,22 +97,22 @@ static constexpr Bitmap bitmap_keyboard {
};
static constexpr uint8_t bitmap_unistroke_data[] = {
0x33, 0xC0,
0x33, 0x00,
0xB3, 0xCD,
0xB3, 0xDF,
0xB3, 0xD9,
0xB3, 0xD9,
0x9E, 0xD9,
0x00, 0x00,
0x00, 0x00,
0x22, 0x00,
0x22, 0x00,
0x22, 0x00,
0x22, 0x00,
0x22, 0x00,
0x22, 0x00,
0xA2, 0x73,
0xA2, 0x24,
0xA2, 0x24,
0xA2, 0x24,
0xA2, 0x24,
0x9C, 0x74,
0x00, 0x00,
0x00, 0x00,
0x00, 0x1C,
0x06, 0x3E,
0x06, 0x67,
0xCE, 0x43,
0xFC, 0x01,
0x78, 0x40,
0x00, 0x00
};
static constexpr Bitmap bitmap_unistroke {

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@ -0,0 +1,73 @@
unsigned char modal_warning_bmp[] = {
0x42, 0x4d, 0xfa, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x96, 0x00,
0x00, 0x00, 0x6c, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x28, 0x00,
0x00, 0x00, 0x01, 0x00, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0xa8, 0x02,
0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x07, 0x00,
0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x42, 0x47, 0x52, 0x73, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
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0xff, 0x00, 0x78, 0x78, 0x78, 0x00, 0x00, 0x7c, 0xff, 0x00, 0x00, 0xa9,
0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x02, 0x03, 0x24, 0x66, 0x02, 0x30,
0x00, 0x00, 0x02, 0x36, 0x24, 0x66, 0x02, 0x63, 0x00, 0x00, 0x02, 0x66,
0x02, 0x63, 0x20, 0x00, 0x02, 0x36, 0x02, 0x66, 0x00, 0x00, 0x02, 0x36,
0x02, 0x60, 0x20, 0x00, 0x02, 0x06, 0x02, 0x63, 0x00, 0x00, 0x02, 0x06,
0x02, 0x60, 0x0c, 0x00, 0x00, 0x08, 0x03, 0x66, 0x66, 0x30, 0x0c, 0x00,
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0x00, 0x01
};
unsigned int modal_warning_bmp_len = 830;

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@ -0,0 +1,168 @@
/*
* 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 "pocsag_app.hpp"
#include "baseband_api.hpp"
#include "portapack.hpp"
using namespace portapack;
#include "string_format.hpp"
#include "utility.hpp"
#define POCSAG_IDLE 0x7A89C197
namespace pocsag {
namespace format {
static std::string signal_rate_str(SignalRate signal_rate) {
switch(signal_rate) {
case SignalRate::FSK512: return "FSK 512 ";
case SignalRate::FSK1200: return "FSK 1200";
case SignalRate::FSK2400: return "FSK 2400";
default: return "- - - - ";
}
}
} /* namespace format */
} /* namespace pocsag */
void POCSAGLogger::on_packet(const pocsag::POCSAGPacket& packet) {
std::string entry = pocsag::format::signal_rate_str(packet.signal_rate()) + " ";
for (size_t c = 0; c < 16; c++)
entry += to_string_hex(packet[c], 8) + " ";
log_file.write_entry(packet.timestamp(), entry);
}
namespace ui {
POCSAGAppView::POCSAGAppView(NavigationView& nav) {
baseband::run_image(portapack::spi_flash::image_tag_pocsag);
add_children({ {
&rssi,
&channel,
&options_band,
&field_rf_amp,
&field_lna,
&field_vga,
//&text_debug,
&console
} });
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()),
1,
});
options_band.on_change = [this](size_t, OptionsField::value_t v) {
this->on_band_changed(v);
};
options_band.set_by_value(target_frequency());
logger = std::make_unique<POCSAGLogger>();
if( logger ) {
logger->append("pocsag.txt");
}
baseband::set_pocsag();
}
POCSAGAppView::~POCSAGAppView() {
radio::disable();
baseband::shutdown();
}
void POCSAGAppView::focus() {
options_band.focus();
}
void POCSAGAppView::set_parent_rect(const Rect new_parent_rect) {
View::set_parent_rect(new_parent_rect);
}
void POCSAGAppView::on_packet(const POCSAGPacketMessage * message) {
bool eom = false;
uint32_t codeword;
if( logger ) {
logger->on_packet(message->packet);
}
for (size_t c = 0; c < 16; c++) {
codeword = message->packet[c];
if (codeword & 0x80000000) {
// Message
console.writeln("Message !");
} else {
// Address
if (codeword == POCSAG_IDLE) {
eom = true;
} else {
function = (codeword >> 11) & 3;
address = ((codeword >> 10) & 0x1FFFF8) | ((codeword >> 1) & 7);
}
}
}
if (eom)
console.writeln("Address:" + to_string_hex(address, 6) + " Function:" + to_string_dec_uint(function));
//console.writeln("EOM");
//console.writeln(to_string_hex(message->packet[0], 8) + "/"+ to_string_hex(message->packet[1], 8));
if (eom)
batch_cnt = 0;
else
batch_cnt++;
}
void POCSAGAppView::on_band_changed(const uint32_t new_band_frequency) {
set_target_frequency(new_band_frequency);
}
void POCSAGAppView::set_target_frequency(const uint32_t new_value) {
target_frequency_ = new_value;
radio::set_tuning_frequency(tuning_frequency());
}
uint32_t POCSAGAppView::target_frequency() const {
return target_frequency_;
}
uint32_t POCSAGAppView::tuning_frequency() const {
return target_frequency() - (sampling_rate / 4);
}
} /* namespace ui */

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@ -0,0 +1,142 @@
/*
* 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.
*/
#ifndef __POCSAG_APP_H__
#define __POCSAG_APP_H__
#include "ui_widget.hpp"
#include "ui_navigation.hpp"
#include "ui_receiver.hpp"
#include "ui_rssi.hpp"
#include "ui_channel.hpp"
#include "event_m0.hpp"
#include "log_file.hpp"
#include "pocsag_packet.hpp"
class POCSAGLogger {
public:
Optional<File::Error> append(const std::string& filename) {
return log_file.append(filename);
}
void on_packet(const pocsag::POCSAGPacket& packet);
private:
LogFile log_file;
};
namespace ui {
class POCSAGAppView : public View {
public:
POCSAGAppView(NavigationView& nav);
~POCSAGAppView();
void set_parent_rect(const Rect new_parent_rect) override;
void paint(Painter&) override { };
void focus() override;
std::string title() const override { return "POCSAG RX"; };
private:
static constexpr uint32_t initial_target_frequency = 466175000;
static constexpr uint32_t sampling_rate = 1536000;
static constexpr uint32_t baseband_bandwidth = 1750000;
uint32_t batch_cnt = 0;
uint32_t address, function;
MessageHandlerRegistration message_handler_packet {
Message::ID::POCSAGPacket,
[this](Message* const p) {
const auto message = static_cast<const POCSAGPacketMessage*>(p);
this->on_packet(message);
}
};
static constexpr ui::Dim header_height = 1 * 16;
RSSI rssi {
{ 21 * 8, 0, 6 * 8, 4 },
};
Channel channel {
{ 21 * 8, 5, 6 * 8, 4 },
};
OptionsField options_band {
{ 0 * 8, 0 * 16 },
7,
{
{ "FR .025", 466025000 },
{ "FR .050", 466050000 },
{ "FR .075", 466075000 },
{ "FR .175", 466175000 },
{ "FR .206", 466206250 },
{ "FR .231", 466231250 }
}
};
Text text_debug {
{ 0, 40, 240, 16 },
"Debug..."
};
Console console {
{ 0, 32, 240, 272 }
};
RFAmpField field_rf_amp {
{ 13 * 8, 0 * 16 }
};
LNAGainField field_lna {
{ 15 * 8, 0 * 16 }
};
VGAGainField field_vga {
{ 18 * 8, 0 * 16 }
};
std::unique_ptr<POCSAGLogger> logger;
uint32_t target_frequency_ = initial_target_frequency;
void on_packet(const POCSAGPacketMessage * message);
void on_show_list();
void on_band_changed(const uint32_t new_band_frequency);
uint32_t target_frequency() const;
void set_target_frequency(const uint32_t new_value);
uint32_t tuning_frequency() const;
};
} /* namespace ui */
#endif/*__POCSAG_APP_H__*/

View File

@ -99,7 +99,7 @@ std::string to_string_dec_int(
static void to_string_hex_internal(char* p, const uint32_t n, const int32_t l) {
const uint32_t d = n & 0xf;
p[l] = (d > 9) ? (d + 87) : (d + 48);
p[l] = (d > 9) ? (d + 55) : (d + 48);
if( l > 0 ) {
to_string_hex_internal(p, n >> 4, l - 1);
}

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@ -116,7 +116,7 @@ AlphanumView::AlphanumView(
add_child(&button_done);
button_done.on_select = [this, &nav, txt, max_len](Button&) {
memcpy(txt, txtinput, max_len + 1);
on_changed(this->value());
if (on_changed) on_changed(this->value());
nav.pop();
};

View File

@ -28,7 +28,8 @@
#include "portapack.hpp"
#include "event_m0.hpp"
#include "portapack_persistent_memory.hpp"
#include "splash.hpp"
#include "bmp_splash.hpp"
#include "bmp_modal_warning.hpp"
#include "ui_about.hpp"
#include "ui_setup.hpp"
@ -52,6 +53,7 @@
#include "ais_app.hpp"
#include "ert_app.hpp"
#include "tpms_app.hpp"
#include "pocsag_app.hpp"
#include "capture_app.hpp"
#include "core_control.hpp"
@ -184,7 +186,7 @@ void NavigationView::display_modal(
) {
/* If a modal view is already visible, don't display another */
if( !modal_view ) {
modal_view = push<ModalMessageView>(title, message);
modal_view = push<ModalMessageView>(title, message, false);
}
}
@ -228,9 +230,10 @@ TranspondersMenuView::TranspondersMenuView(NavigationView& nav) {
/* ReceiverMenuView ******************************************************/
ReceiverMenuView::ReceiverMenuView(NavigationView& nav) {
add_items<2>({ {
add_items<3>({ {
{ "Audio", ui::Color::white(), [&nav](){ nav.push<AnalogAudioView>(); } },
{ "Transponders", ui::Color::white(), [&nav](){ nav.push<TranspondersMenuView>(); } },
{ "POCSAG", ui::Color::cyan(), [&nav](){ nav.push<POCSAGAppView>(); } },
} });
on_left = [&nav](){ nav.pop(); };
}
@ -437,17 +440,37 @@ void NotImplementedView::focus() {
ModalMessageView::ModalMessageView(
NavigationView& nav,
const std::string& title,
const std::string& message
) : title_ { title }
const std::string& message,
bool yesno
) : title_ { title },
yesno_ { yesno }
{
button_done.on_select = [&nav](Button&){
nav.pop();
};
add_children({ {
&text_message,
&button_done,
} });
if (!yesno) {
button_done.on_select = [&nav](Button&){
nav.pop();
};
add_children({ {
&text_message,
&button_done
} });
} else {
button_yes.on_select = [this,&nav](Button&){
if (on_choice) on_choice(true);
nav.pop();
};
button_no.on_select = [this,&nav](Button&){
if (on_choice) on_choice(false);
nav.pop();
};
add_children({ {
&text_message,
&button_yes,
&button_no
} });
}
text_message.set(message);
@ -458,8 +481,17 @@ ModalMessageView::ModalMessageView(
});
}
void ModalMessageView::paint(Painter& painter) {
(void)painter;
portapack::display.drawBMP({64, 64}, modal_warning_bmp, false);
}
void ModalMessageView::focus() {
button_done.focus();
if (!yesno_) {
button_done.focus();
} else {
button_yes.focus();
}
}
} /* namespace ui */

View File

@ -264,15 +264,20 @@ public:
ModalMessageView(
NavigationView& nav,
const std::string& title,
const std::string& message
const std::string& message,
bool yesno
);
void paint(Painter& painter) override;
void focus() override;
std::string title() const override { return title_; };
std::function<void(bool)> on_choice;
private:
const std::string title_;
const bool yesno_;
Text text_message { };
@ -280,6 +285,15 @@ private:
{ 10 * 8, 13 * 16, 10 * 8, 24 },
"OK",
};
Button button_yes {
{ 40, 13 * 16, 64, 24 },
"YES",
};
Button button_no {
{ 152, 13 * 16, 64, 24 },
"NO",
};
};
} /* namespace ui */

View File

@ -415,14 +415,19 @@ XylosView::XylosView(NavigationView& nav) {
};*/
// Single transmit
button_transmit.on_select = [this](Button&) {
button_transmit.on_select = [this,&nav](Button&) {
if (tx_mode == IDLE) {
// audio::headphone::set_volume(volume_t::decibel(90 - 99) + audio::headphone::volume_range().max);
tx_mode = SINGLE;
button_transmit.set_style(&style_cancel);
button_transmit.set_text("Wait");
generate_message();
start_tx();
/*auto modal_view = nav.push<ModalMessageView>("TX", "TX ?", true);
modal_view->on_choice = [this](bool choice) {
if (choice) {*/
// audio::headphone::set_volume(volume_t::decibel(90 - 99) + audio::headphone::volume_range().max);
tx_mode = SINGLE;
button_transmit.set_style(&style_cancel);
button_transmit.set_text("Wait");
generate_message();
start_tx();
//}
//};
}
};
}

View File

@ -25,9 +25,9 @@
#include "ui_navigation.hpp"
#include "ui_font_fixed_8x16.hpp"
#include "bulb_on_bmp.hpp"
#include "bulb_off_bmp.hpp"
#include "bulb_ignore_bmp.hpp"
#include "bmp_bulb_on.hpp"
#include "bmp_bulb_off.hpp"
#include "bmp_bulb_ignore.hpp"
#include "message.hpp"
//#include "volume.hpp"

View File

@ -298,6 +298,13 @@ set(MODE_CPPSRC
)
DeclareTargets(PERT ert)
### POCSAG RX
set(MODE_CPPSRC
proc_pocsag.cpp
)
DeclareTargets(PPOC pocsag)
### NFM Audio
set(MODE_CPPSRC

View File

@ -0,0 +1,164 @@
/*
* Copyright (C) 1996 Thomas Sailer (sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu)
* Copyright (C) 2012-2014 Elias Oenal (multimon-ng@eliasoenal.com)
* 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 "proc_pocsag.hpp"
#include "event_m4.hpp"
#include <cstdint>
#include <cstddef>
#define FREQ_SAMP 24000
#define BAUD 1200
#define SPHASEINC (0x10000u * BAUD / FREQ_SAMP)
#define POCSAG_SYNC 0x7CD215D8
#define POCSAG_IDLE 0x7A89C197
void POCSAGProcessor::execute(const buffer_c8_t& buffer) {
/* 1.536MHz, 2048 samples */
if( !configured ) return;
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
auto audio = demod.execute(decim_1_out, audio_buffer);
for (c = 0; c < 32; c++) {
// Bit = sign
const int32_t sample_int = audio.p[c] * 32768.0f;
const int32_t audio_sample = __SSAT(sample_int, 16);
dcd_shreg <<= 1;
dcd_shreg |= (audio_sample < 0);
// Detect transitions to adjust clock
if ((dcd_shreg ^ (dcd_shreg >> 1)) & 1) {
if (sphase < (0x8000u-(SPHASEINC/2)))
sphase += SPHASEINC/8;
else
sphase -= SPHASEINC/8;
}
sphase += SPHASEINC;
if (sphase >= 0x10000u) {
sphase &= 0xffffu;
rx_data <<= 1;
rx_data |= (dcd_shreg & 1);
switch(rx_state) {
case WAITING:
if (rx_data == 0xAAAAAAAA) {
rx_state = PREAMBLE;
sync_timeout = 0;
}
break;
case PREAMBLE:
if (sync_timeout < 600) {
sync_timeout++;
//pocsag_brute_repair(&s->l2.pocsag, &rx_data);
if (rx_data == POCSAG_SYNC) {
packet.clear();
rx_state = SYNC;
frame_counter = 0;
rx_bit = 0;
} else if (rx_data == POCSAG_IDLE) {
rx_state = WAITING;
}
} else {
rx_state = WAITING; // Abort
}
break;
case SYNC:
rx_bit++;
if (rx_bit >= 32) {
rx_bit = 0;
//pocsag_brute_repair(&s->l2.pocsag, &rx_data);
packet.set(frame_counter, rx_data);
if (rx_data == POCSAG_IDLE) {
rx_state = WAITING;
packet.set_timestamp(Timestamp::now());
//packet.rate = pocsag::SignalRate::FSK1200;
const POCSAGPacketMessage message(packet);
shared_memory.application_queue.push(message);
} else {
if (frame_counter < 15)
frame_counter++;
else
rx_state = WAITING;
}
}
break;
default:
break;
}
}
}
}
void POCSAGProcessor::on_message(const Message* const message) {
if (message->id == Message::ID::POCSAGConfigure)
configure(*reinterpret_cast<const POCSAGConfigureMessage*>(message));
}
void POCSAGProcessor::configure(const POCSAGConfigureMessage& message) {
(void)message;
constexpr size_t decim_0_input_fs = baseband_fs;
constexpr size_t decim_0_output_fs = decim_0_input_fs / decim_0.decimation_factor;
constexpr size_t decim_1_input_fs = decim_0_output_fs;
constexpr size_t decim_1_output_fs = decim_1_input_fs / decim_1.decimation_factor;
const size_t demod_input_fs = decim_1_output_fs;
decim_0.configure(taps_11k0_decim_0.taps, 33554432);
decim_1.configure(taps_11k0_decim_1.taps, 131072);
demod.configure(demod_input_fs, 4500);
rx_state = WAITING;
configured = true;
}
int main() {
EventDispatcher event_dispatcher { std::make_unique<POCSAGProcessor>() };
event_dispatcher.run();
return 0;
}

View File

@ -0,0 +1,97 @@
/*
* 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.
*/
#ifndef __PROC_POCSAG_H__
#define __PROC_POCSAG_H__
#include "baseband_processor.hpp"
#include "baseband_thread.hpp"
#include "rssi_thread.hpp"
#include "dsp_iir.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "pocsag_packet.hpp"
#include "message.hpp"
#include "portapack_shared_memory.hpp"
#include <cstdint>
class POCSAGProcessor : public BasebandProcessor {
public:
void execute(const buffer_c8_t& buffer) override;
void on_message(const Message* const message) override;
private:
enum rx_states {
WAITING = 0,
PREAMBLE = 32,
SYNC = 64,
LOSING_SYNC = 65,
LOST_SYNC = 66,
ADDRESS = 67,
MESSAGE = 68,
END_OF_MESSAGE = 69
};
static constexpr size_t baseband_fs = 1536000;
BasebandThread baseband_thread { baseband_fs, this, NORMALPRIO + 20, baseband::Direction::Receive };
RSSIThread rssi_thread { NORMALPRIO + 10 };
std::array<complex16_t, 512> dst;
const buffer_c16_t dst_buffer {
dst.data(),
dst.size()
};
std::array<float, 32> audio;
const buffer_f32_t audio_buffer {
audio.data(),
audio.size()
};
dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0;
dsp::decimate::FIRC16xR16x32Decim8 decim_1;
dsp::demodulate::FM demod;
uint32_t sync_timeout;
uint32_t dcd_shreg;
uint32_t sphase;
uint32_t rx_data;
uint32_t rx_bit;
bool configured = false;
rx_states rx_state;
size_t c, frame_counter;
pocsag::POCSAGPacket packet;
void configure(const POCSAGConfigureMessage& message);
};
#endif/*__PROC_POCSAG_H__*/

View File

@ -40,6 +40,7 @@ constexpr iir_biquad_config_t audio_48k_hpf_300hz_config {
constexpr iir_biquad_config_t audio_24k_hpf_300hz_config {
{ 0.94597686f, -1.89195371f, 0.94597686f },
{ 1.00000000f, -1.88903308f, 0.89487434f }
};
// scipy.signal.butter(2, 300 / 8000.0, 'highpass', analog=False)

View File

@ -32,6 +32,7 @@
#include "baseband_packet.hpp"
#include "ert_packet.hpp"
#include "tpms_packet.hpp"
#include "pocsag_packet.hpp"
#include "dsp_fir_taps.hpp"
#include "dsp_iir.hpp"
#include "fifo.hpp"
@ -73,9 +74,12 @@ public:
OOKConfigure = 25,
RDSConfigure = 26,
AudioTXConfig = 27,
POCSAGConfigure = 28,
FIFOSignal = 28,
FIFOData = 29,
POCSAGPacket = 30,
FIFOSignal = 31,
FIFOData = 32,
MAX
};
@ -270,6 +274,18 @@ public:
baseband::Packet packet;
};
class POCSAGPacketMessage : public Message {
public:
constexpr POCSAGPacketMessage(
const pocsag::POCSAGPacket& packet
) : Message { ID::POCSAGPacket },
packet { packet }
{
}
pocsag::POCSAGPacket packet;
};
class ShutdownMessage : public Message {
public:
constexpr ShutdownMessage(
@ -602,6 +618,18 @@ public:
const uint32_t pause_symbols;
};
class POCSAGConfigureMessage : public Message {
public:
constexpr POCSAGConfigureMessage(
const uint32_t rate
) : Message { ID::POCSAGConfigure },
rate(rate)
{
}
const uint32_t rate;
};
// TODO: use streaming buffer instead
class FIFOSignalMessage : public Message {
public:

View File

@ -0,0 +1,27 @@
/*
* 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 "pocsag_packet.hpp"
namespace pocsag {
} /* namespace pocsag */

View File

@ -0,0 +1,78 @@
/*
* 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.
*/
#ifndef __POCSAG_PACKET_H__
#define __POCSAG_PACKET_H__
#include <cstdint>
#include <cstddef>
#include "optional.hpp"
#include "baseband.hpp"
namespace pocsag {
enum SignalRate : uint32_t {
FSK512 = 1,
FSK1200 = 2,
FSK2400 = 3,
DEBUG = 4
};
class POCSAGPacket {
public:
void set_timestamp(const Timestamp& value) {
timestamp_ = value;
}
Timestamp timestamp() const {
return timestamp_;
}
void set(const size_t index, const uint32_t data) {
if (index < 16)
codewords[index] = data;
}
uint32_t operator[](const size_t index) const {
return (index < 16) ? codewords[index] : 0;
}
SignalRate signal_rate() const {
return FSK1200;
}
void clear() {
for (size_t c = 0; c < 16; c++)
codewords[c] = 0;
}
private:
//SignalRate rate = FSK1200;
uint32_t codewords[16];
Timestamp timestamp_ { };
};
} /* namespace pocsag */
#endif/*__POCSAG_PACKET_H__*/

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@ -68,6 +68,7 @@ constexpr image_tag_t image_tag_capture { 'P', 'C', 'A', 'P' };
constexpr image_tag_t image_tag_ert { 'P', 'E', 'R', 'T' };
constexpr image_tag_t image_tag_nfm_audio { 'P', 'N', 'F', 'M' };
constexpr image_tag_t image_tag_tpms { 'P', 'T', 'P', 'M' };
constexpr image_tag_t image_tag_pocsag { 'P', 'P', 'O', 'C' };
constexpr image_tag_t image_tag_wfm_audio { 'P', 'W', 'F', 'M' };
constexpr image_tag_t image_tag_wideband_spectrum { 'P', 'S', 'P', 'E' };

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