#!/usr/bin/env python3 # -*- coding: utf-8 -*- # # SPDX-License-Identifier: GPL-3.0 # # GNU Radio Python Flow Graph # Title: LoRa Receiver to UDP socket with USRP # Author: FlUxIuS # Copyright: PentHertz # Description: Example of a schema that receive LoRa frames and write to an UDP socket to be decoded with the Scapy Layer # GNU Radio version: 3.8.0.0 from distutils.version import StrictVersion if __name__ == '__main__': import ctypes import sys if sys.platform.startswith('linux'): try: x11 = ctypes.cdll.LoadLibrary('libX11.so') x11.XInitThreads() except: print("Warning: failed to XInitThreads()") from PyQt5 import Qt from gnuradio import eng_notation from gnuradio import qtgui from gnuradio.filter import firdes import sip from gnuradio import gr import sys import signal from argparse import ArgumentParser from gnuradio.eng_arg import eng_float, intx from gnuradio import uhd import time from gnuradio.qtgui import Range, RangeWidget import lora from gnuradio import qtgui class LoRa_usrp_receive_to_UDP(gr.top_block, Qt.QWidget): def __init__(self): gr.top_block.__init__(self, "LoRa Receiver to UDP socket with USRP") Qt.QWidget.__init__(self) self.setWindowTitle("LoRa Receiver to UDP socket with USRP") qtgui.util.check_set_qss() try: self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc')) except: pass self.top_scroll_layout = Qt.QVBoxLayout() self.setLayout(self.top_scroll_layout) self.top_scroll = Qt.QScrollArea() self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame) self.top_scroll_layout.addWidget(self.top_scroll) self.top_scroll.setWidgetResizable(True) self.top_widget = Qt.QWidget() self.top_scroll.setWidget(self.top_widget) self.top_layout = Qt.QVBoxLayout(self.top_widget) self.top_grid_layout = Qt.QGridLayout() self.top_layout.addLayout(self.top_grid_layout) self.settings = Qt.QSettings("GNU Radio", "LoRa_usrp_receive_to_UDP") try: if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"): self.restoreGeometry(self.settings.value("geometry").toByteArray()) else: self.restoreGeometry(self.settings.value("geometry")) except: pass ################################################## # Variables ################################################## self.samp_rate = samp_rate = 1e6 self.freq_slider = freq_slider = 868e6 self.channel_freq = channel_freq = 868.2e6 ################################################## # Blocks ################################################## self._freq_slider_range = Range(867e6, 869e6, 1, 868e6, 200) self._freq_slider_win = RangeWidget(self._freq_slider_range, self.set_freq_slider, 'Frequency', "counter_slider", float) self.top_grid_layout.addWidget(self._freq_slider_win) self._channel_freq_tool_bar = Qt.QToolBar(self) self._channel_freq_tool_bar.addWidget(Qt.QLabel('Channel frequency' + ": ")) self._channel_freq_line_edit = Qt.QLineEdit(str(self.channel_freq)) self._channel_freq_tool_bar.addWidget(self._channel_freq_line_edit) self._channel_freq_line_edit.returnPressed.connect( lambda: self.set_channel_freq(eng_notation.str_to_num(str(self._channel_freq_line_edit.text())))) self.top_grid_layout.addWidget(self._channel_freq_tool_bar) self.uhd_usrp_source_0 = uhd.usrp_source( ",".join(("", "")), uhd.stream_args( cpu_format="fc32", args='', channels=[], ), ) self.uhd_usrp_source_0.set_center_freq(freq_slider, 0) self.uhd_usrp_source_0.set_gain(0, 0) self.uhd_usrp_source_0.set_antenna('RX2', 0) self.uhd_usrp_source_0.set_bandwidth(samp_rate, 0) self.uhd_usrp_source_0.set_samp_rate(samp_rate) self.uhd_usrp_source_0.set_time_unknown_pps(uhd.time_spec()) self.qtgui_waterfall_sink_x_0 = qtgui.waterfall_sink_c( 1024, #size firdes.WIN_HAMMING, #wintype channel_freq, #fc samp_rate, #bw "", #name 1 #number of inputs ) self.qtgui_waterfall_sink_x_0.set_update_time(0.10) self.qtgui_waterfall_sink_x_0.enable_grid(True) self.qtgui_waterfall_sink_x_0.enable_axis_labels(True) labels = ['', '', '', '', '', '', '', '', '', ''] colors = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0] alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0] for i in range(1): if len(labels[i]) == 0: self.qtgui_waterfall_sink_x_0.set_line_label(i, "Data {0}".format(i)) else: self.qtgui_waterfall_sink_x_0.set_line_label(i, labels[i]) self.qtgui_waterfall_sink_x_0.set_color_map(i, colors[i]) self.qtgui_waterfall_sink_x_0.set_line_alpha(i, alphas[i]) self.qtgui_waterfall_sink_x_0.set_intensity_range(-140, 10) self._qtgui_waterfall_sink_x_0_win = sip.wrapinstance(self.qtgui_waterfall_sink_x_0.pyqwidget(), Qt.QWidget) self.top_grid_layout.addWidget(self._qtgui_waterfall_sink_x_0_win) self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c( 1024, #size firdes.WIN_BLACKMAN_hARRIS, #wintype freq_slider, #fc samp_rate, #bw "", #name 1 ) self.qtgui_freq_sink_x_0.set_update_time(0.10) self.qtgui_freq_sink_x_0.set_y_axis(-140, 10) self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB') self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "") self.qtgui_freq_sink_x_0.enable_autoscale(False) self.qtgui_freq_sink_x_0.enable_grid(False) self.qtgui_freq_sink_x_0.set_fft_average(1.0) self.qtgui_freq_sink_x_0.enable_axis_labels(True) self.qtgui_freq_sink_x_0.enable_control_panel(True) labels = ['', '', '', '', '', '', '', '', '', ''] widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] colors = ["blue", "red", "green", "black", "cyan", "magenta", "yellow", "dark red", "dark green", "dark blue"] alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0] for i in range(1): if len(labels[i]) == 0: self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i)) else: self.qtgui_freq_sink_x_0.set_line_label(i, labels[i]) self.qtgui_freq_sink_x_0.set_line_width(i, widths[i]) self.qtgui_freq_sink_x_0.set_line_color(i, colors[i]) self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i]) self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget) self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win) self.lora_message_socket_sink_0 = lora.message_socket_sink('127.0.0.1', 40868, 0) self.lora_lora_receiver_0 = lora.lora_receiver(samp_rate, 868e6, [channel_freq], 125000, 7, False, 4, True, False, False, 1, False, False) ################################################## # Connections ################################################## self.msg_connect((self.lora_lora_receiver_0, 'frames'), (self.lora_message_socket_sink_0, 'in')) self.connect((self.uhd_usrp_source_0, 0), (self.lora_lora_receiver_0, 0)) self.connect((self.uhd_usrp_source_0, 0), (self.qtgui_freq_sink_x_0, 0)) self.connect((self.uhd_usrp_source_0, 0), (self.qtgui_waterfall_sink_x_0, 0)) def closeEvent(self, event): self.settings = Qt.QSettings("GNU Radio", "LoRa_usrp_receive_to_UDP") self.settings.setValue("geometry", self.saveGeometry()) event.accept() def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.qtgui_freq_sink_x_0.set_frequency_range(self.freq_slider, self.samp_rate) self.qtgui_waterfall_sink_x_0.set_frequency_range(self.channel_freq, self.samp_rate) self.uhd_usrp_source_0.set_samp_rate(self.samp_rate) self.uhd_usrp_source_0.set_bandwidth(self.samp_rate, 0) def get_freq_slider(self): return self.freq_slider def set_freq_slider(self, freq_slider): self.freq_slider = freq_slider self.qtgui_freq_sink_x_0.set_frequency_range(self.freq_slider, self.samp_rate) self.uhd_usrp_source_0.set_center_freq(self.freq_slider, 0) def get_channel_freq(self): return self.channel_freq def set_channel_freq(self, channel_freq): self.channel_freq = channel_freq Qt.QMetaObject.invokeMethod(self._channel_freq_line_edit, "setText", Qt.Q_ARG("QString", eng_notation.num_to_str(self.channel_freq))) self.qtgui_waterfall_sink_x_0.set_frequency_range(self.channel_freq, self.samp_rate) def main(top_block_cls=LoRa_usrp_receive_to_UDP, options=None): if StrictVersion("4.5.0") <= StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"): style = gr.prefs().get_string('qtgui', 'style', 'raster') Qt.QApplication.setGraphicsSystem(style) qapp = Qt.QApplication(sys.argv) tb = top_block_cls() tb.start() tb.show() def sig_handler(sig=None, frame=None): Qt.QApplication.quit() signal.signal(signal.SIGINT, sig_handler) signal.signal(signal.SIGTERM, sig_handler) timer = Qt.QTimer() timer.start(500) timer.timeout.connect(lambda: None) def quitting(): tb.stop() tb.wait() qapp.aboutToQuit.connect(quitting) qapp.exec_() if __name__ == '__main__': main()