def demodulate(signal_data,
mod_type: str,
bit_length,
center,
noise,
tolerance,
decoding=None,
pause_threshold=8):
signal = Signal("", "")
if isinstance(signal_data, IQArray):
signal.iq_array = signal_data
else:
if signal_data.dtype == np.complex64:
signal.iq_array = IQArray(signal_data.view(np.float32))
else:
signal.iq_array = IQArray(signal_data)
signal.modulation_type = mod_type
signal.bit_len = bit_length
signal.qad_center = center
signal.noise_threshold = noise
signal.pause_threshold = pause_threshold
if tolerance is not None:
signal.tolerance = tolerance
pa = ProtocolAnalyzer(signal)
if decoding is not None:
pa.decoder = decoding
pa.get_protocol_from_signal()
return pa.decoded_hex_str
def test_4_psk(self):
bits = array.array("B", [1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1])
angles_degree = [-135, -45, 45, 135]
parameters = array.array("f", [np.pi*a/180 for a in angles_degree])
result = modulate_c(bits, 100, "PSK", parameters, 2, 1, 40e3, 0, 1e6, 1000, 0)
signal = Signal("")
signal.iq_array = IQArray(result)
signal.bits_per_symbol = 2
signal.center = 0
signal.center_spacing = 1
signal.modulation_type = "PSK"
proto_analyzer = ProtocolAnalyzer(signal)
proto_analyzer.get_protocol_from_signal()
demod_bits = proto_analyzer.plain_bits_str[0]
self.assertEqual(len(demod_bits), len(bits))
self.assertTrue(demod_bits.startswith("10101010"))
np.random.seed(42)
noised = result + 0.1 * np.random.normal(loc=0, scale=np.sqrt(2)/2, size=(len(result), 2))
signal.iq_array = IQArray(noised.astype(np.float32))
signal.center_spacing = 1.5
signal.noise_threshold = 0.2
signal._qad = None
proto_analyzer.get_protocol_from_signal()
demod_bits = proto_analyzer.plain_bits_str[0]
self.assertEqual(len(demod_bits), len(bits))
self.assertTrue(demod_bits.startswith("10101010"))
def __demodulate(self, connection: socket.socket):
connection.settimeout(self.TIMEOUT)
time.sleep(self.TIMEOUT)
total_data = []
while True:
try:
data = connection.recv(65536)
if data:
total_data.append(data)
else:
break
except socket.timeout:
break
if len(total_data) == 0:
logger.error("Did not receive any data from socket.")
arr = IQArray(
np.array(np.frombuffer(b"".join(total_data), dtype=np.complex64)))
signal = Signal("", "")
signal.iq_array = arr
pa = ProtocolAnalyzer(signal)
pa.get_protocol_from_signal()
return pa.plain_bits_str
def test_cli_modulate_messages(self):
modulator = Modulator("test")
modulator.sample_rate = 2e3
modulator.samples_per_bit = 100
modulator.modulation_type_str = "ASK"
modulator.param_for_zero = 0
modulator.param_for_one = 100
bits = "1010111100001"
self.assertIsNone(urh_cli.modulate_messages([], modulator))
message = Message.from_plain_bits_str(bits, pause=1000)
modulated = urh_cli.modulate_messages([message], modulator)
# Demodulate for testing
s = Signal("", "", modulation="ASK", sample_rate=2e6)
s.bit_len = 100
s.noise_threshold = 0
s.iq_array = modulated
pa = ProtocolAnalyzer(s)
pa.get_protocol_from_signal()
self.assertEqual(len(pa.messages), 1)
self.assertEqual(pa.messages[0].plain_bits_str, bits)
def test_protocol_sniffer(self):
samples_per_symbol = 100
center = 0.0942
noise = 0.1
tolerance = 2
modulation_type = "FSK"
sample_rate = 1e6
device_name = NetworkSDRInterfacePlugin.NETWORK_SDR_NAME
sniffer = ProtocolSniffer(samples_per_symbol=samples_per_symbol, center=center, center_spacing=0.1,
noise=noise, tolerance=tolerance,
modulation_type=modulation_type, bits_per_symbol=1,
device=device_name, backend_handler=BackendHandler(),
network_raw_mode=True)
port = self.get_free_port()
sniffer.rcv_device.set_server_port(port)
self.network_sdr_plugin_sender = NetworkSDRInterfacePlugin(raw_mode=True)
self.network_sdr_plugin_sender.client_port = port
sniffer.sniff()
QTest.qWait(10)
data = ["101010", "000111", "1111000"]
pause = 10 * samples_per_symbol
modulator = Modulator("test")
modulator.samples_per_symbol = samples_per_symbol
modulator.sample_rate = sample_rate
modulator.modulation_type = modulation_type
modulator.parameters[1] = 20e3
modulator.parameters[0] = 10e3
packages = []
for d in data:
packages.append(modulator.modulate(list(map(int, d)), pause))
# verify modulation was correct
pa = ProtocolAnalyzer(None)
signal = Signal("", "", sample_rate=sample_rate)
signal.iq_array = IQArray.concatenate(packages)
signal.modulation_type = modulation_type
signal.samples_per_symbol = samples_per_symbol
signal.tolerance = tolerance
signal.noise_threshold = noise
signal.center = center
pa.signal = signal
pa.get_protocol_from_signal()
self.assertEqual(pa.plain_bits_str, data)
# send data
send_data = IQArray.concatenate(packages)
self.network_sdr_plugin_sender.send_raw_data(send_data, 1)
time.sleep(1)
# Send enough pauses to end sniffing
self.network_sdr_plugin_sender.send_raw_data(IQArray(None, np.float32, 10 * 2 * samples_per_symbol), 1)
time.sleep(1)
sniffer.stop()
self.assertEqual(sniffer.plain_bits_str, data)
def __init__(self,
project_manager,
modulated_data,
modulation_msg_indices=None,
continuous_send_mode=False,
parent=None,
testing_mode=False):
super().__init__(project_manager,
is_tx=True,
continuous_send_mode=continuous_send_mode,
parent=parent,
testing_mode=testing_mode)
self.graphics_view = self.ui.graphicsViewSend
self.ui.stackedWidget.setCurrentWidget(self.ui.page_send)
self.hide_receive_ui_items()
self.ui.btnStart.setIcon(QIcon.fromTheme("media-playback-start"))
self.setWindowTitle("Send Signal")
self.setWindowIcon(QIcon.fromTheme("media-playback-start"))
self.ui.btnStart.setToolTip("Send data")
self.ui.btnStop.setToolTip("Stop sending")
self.device_is_sending = False
self.modulation_msg_indices = modulation_msg_indices
if self.modulation_msg_indices is not None:
self.ui.progressBarMessage.setMaximum(
len(self.modulation_msg_indices))
else:
self.ui.progressBarMessage.hide()
self.ui.labelCurrentMessage.hide()
if modulated_data is not None:
assert isinstance(modulated_data, IQArray)
# modulated_data is none in continuous send mode
self.ui.progressBarSample.setMaximum(len(modulated_data))
samp_rate = self.device_settings_widget.ui.spinBoxSampleRate.value(
)
signal = Signal("", "Modulated Preview", sample_rate=samp_rate)
signal.iq_array = modulated_data
self.scene_manager = SignalSceneManager(signal, parent=self)
self.send_indicator = self.scene_manager.scene.addRect(
0, -2, 0, 4, QPen(QColor(Qt.transparent), 0),
QBrush(constants.SEND_INDICATOR_COLOR))
self.send_indicator.stackBefore(
self.scene_manager.scene.selection_area)
self.scene_manager.init_scene()
self.graphics_view.set_signal(signal)
self.graphics_view.sample_rate = samp_rate
self.create_connects()
self.device_settings_widget.update_for_new_device(
overwrite_settings=False)
def __init__(self,
samples_per_symbol: int,
center: float,
center_spacing: float,
noise: float,
tolerance: int,
modulation_type: str,
bits_per_symbol: int,
device: str,
backend_handler: BackendHandler,
network_raw_mode=False):
signal = Signal("", "LiveSignal")
signal.samples_per_symbol = samples_per_symbol
signal.center = center
signal.center_spacing = center_spacing
signal.noise_threshold = noise
signal.tolerance = tolerance
signal.silent_set_modulation_type(modulation_type)
signal.bits_per_symbol = bits_per_symbol
ProtocolAnalyzer.__init__(self, signal)
QObject.__init__(self, None)
self.network_raw_mode = network_raw_mode
self.backend_handler = backend_handler
self.rcv_device = VirtualDevice(self.backend_handler,
device,
Mode.receive,
resume_on_full_receive_buffer=True,
raw_mode=network_raw_mode)
signal.iq_array = IQArray(None, self.rcv_device.data_type, 0)
self.sniff_thread = Thread(target=self.check_for_data, daemon=True)
self.rcv_device.started.connect(self.__emit_started)
self.rcv_device.stopped.connect(self.__emit_stopped)
self.__buffer = IQArray(None, np.float32, 0)
self.__init_buffer()
self.__current_buffer_index = 0
self.reading_data = False
self.adaptive_noise = False
self.automatic_center = False
self.pause_length = 0
self.is_running = False
self.store_messages = True
self.__sniff_file = ""
self.__store_data = True
def test_4_fsk(self):
bits = array.array("B", [1, 0, 1, 0, 1, 1, 0, 0, 0, 1])
parameters = array.array("f", [-20e3, -10e3, 10e3, 20e3])
result = modulate_c(bits, 100, "FSK", parameters, 2, 1, 40e3, 0, 1e6, 1000, 0, parameters[0])
signal = Signal("")
signal.iq_array = IQArray(result)
signal.bits_per_symbol = 2
signal.qad_center = 0
proto_analyzer = ProtocolAnalyzer(signal)
proto_analyzer.get_protocol_from_signal()
self.assertEqual(proto_analyzer.plain_bits_str[0], "1010110001")
def test_fsk_short_bit_length(self):
bits_str = "101010"
bits = array.array("B", list(map(int, bits_str)))
parameters = array.array("f", [-10e3, 10e3])
result = modulate_c(bits, 8, "FSK", parameters, 1, 1, 40e3, 0, 1e6, 1000, 0)
signal = Signal("")
signal.iq_array = IQArray(result)
# Ensure we have no spikes
self.assertLess(np.max(signal.qad), 1)
signal.qad_center = 0
signal.samples_per_symbol = 8
proto_analyzer = ProtocolAnalyzer(signal)
proto_analyzer.get_protocol_from_signal()
self.assertEqual(proto_analyzer.plain_bits_str[0], bits_str)
