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 test_segmentation_ask_50(self): modulator = Modulator("ask50") modulator.modulation_type = "ASK" modulator.parameters[0] = 50 modulator.parameters[1] = 100 modulator.samples_per_symbol = 100 msg1 = modulator.modulate("1010101111", pause=10000) msg2 = modulator.modulate("1010101110010101", pause=20000) msg3 = modulator.modulate("1010101010101111", pause=30000) data = IQArray.concatenate((msg1, msg2, msg3)) segments = segment_messages_from_magnitudes(data.magnitudes, noise_threshold=0) self.assertEqual(len(segments), 3) self.assertEqual(segments, [(0, 999), (10999, 12599), (32599, 34199)])