#!/usr/bin/env python3 # -*- coding: utf-8 -*- # # SPDX-License-Identifier: GPL-3.0 # # GNU Radio Python Flow Graph # Title: LoRa SDR Receiver # Author: gr-mcp # GNU Radio version: 3.10.12.0 from PyQt5 import Qt from gnuradio import qtgui from gnuradio import blocks, gr from gnuradio import filter from gnuradio.filter import firdes from gnuradio import gr from gnuradio.fft import window import sys import signal from PyQt5 import Qt from argparse import ArgumentParser from gnuradio.eng_arg import eng_float, intx from gnuradio import eng_notation from xmlrpc.server import SimpleXMLRPCServer import gnuradio.lora_sdr as lora_sdr import osmosdr import time import sip import threading class default(gr.top_block, Qt.QWidget): def __init__(self): gr.top_block.__init__(self, "LoRa SDR Receiver", catch_exceptions=True) Qt.QWidget.__init__(self) self.setWindowTitle("LoRa SDR Receiver") qtgui.util.check_set_qss() try: self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc')) except BaseException as exc: print(f"Qt GUI: Could not set Icon: {str(exc)}", file=sys.stderr) 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("gnuradio/flowgraphs", "default") try: geometry = self.settings.value("geometry") if geometry: self.restoreGeometry(geometry) except BaseException as exc: print(f"Qt GUI: Could not restore geometry: {str(exc)}", file=sys.stderr) self.flowgraph_started = threading.Event() ################################################## # Variables ################################################## self.samp_rate = samp_rate = 1000000 self.center_freq = center_freq = 915e6 ################################################## # Blocks ################################################## self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c( 1024, #size window.WIN_BLACKMAN_hARRIS, #wintype center_freq, #fc samp_rate, #bw "LoRa Spectrum", #name 1, None # parent ) 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(False) self.qtgui_freq_sink_x_0.set_fft_window_normalized(False) 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.qwidget(), Qt.QWidget) self.top_layout.addWidget(self._qtgui_freq_sink_x_0_win) self.osmosdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" ) self.osmosdr_source_0.set_time_unknown_pps(osmosdr.time_spec_t()) self.osmosdr_source_0.set_sample_rate(samp_rate) self.osmosdr_source_0.set_center_freq(center_freq, 0) self.osmosdr_source_0.set_freq_corr(0, 0) self.osmosdr_source_0.set_dc_offset_mode(0, 0) self.osmosdr_source_0.set_iq_balance_mode(0, 0) self.osmosdr_source_0.set_gain_mode(False, 0) self.osmosdr_source_0.set_gain(40, 0) self.osmosdr_source_0.set_if_gain(20, 0) self.osmosdr_source_0.set_bb_gain(20, 0) self.osmosdr_source_0.set_antenna('', 0) self.osmosdr_source_0.set_bandwidth(0, 0) self.low_pass_filter_0 = filter.fir_filter_ccf( 2, firdes.low_pass( 1, samp_rate, 200e3, 50e3, window.WIN_HAMMING, 6.76)) self.lora_rx_0 = lora_sdr.lora_sdr_lora_rx( bw=125000, cr=1, has_crc=True, impl_head=False, pay_len=255, samp_rate=(int(samp_rate/2)), sf=7, sync_word=[0x12], soft_decoding=True, ldro_mode=2, print_rx=[True,True]) self.blocks_message_debug_0 = blocks.message_debug(True) self.xmlrpc_server_0 = SimpleXMLRPCServer(('0.0.0.0', 8080), allow_none=True) self.xmlrpc_server_0.register_introspection_functions() self.xmlrpc_server_0.register_instance(self) self.xmlrpc_server_0_thread = threading.Thread(target=self.xmlrpc_server_0.serve_forever) self.xmlrpc_server_0_thread.daemon = True self.xmlrpc_server_0_thread.start() ################################################## # Connections ################################################## self.msg_connect((self.lora_rx_0, 'out'), (self.blocks_message_debug_0, 'print')) self.connect((self.low_pass_filter_0, 0), (self.lora_rx_0, 0)) self.connect((self.osmosdr_source_0, 0), (self.low_pass_filter_0, 0)) self.connect((self.osmosdr_source_0, 0), (self.qtgui_freq_sink_x_0, 0)) def closeEvent(self, event): self.settings = Qt.QSettings("gnuradio/flowgraphs", "default") self.settings.setValue("geometry", self.saveGeometry()) self.stop() self.wait() event.accept() def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.osmosdr_source_0.set_sample_rate(self.samp_rate) self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, 200e3, 50e3, window.WIN_HAMMING, 6.76)) self.qtgui_freq_sink_x_0.set_frequency_range(self.center_freq, self.samp_rate) def get_center_freq(self): return self.center_freq def set_center_freq(self, center_freq): self.center_freq = center_freq self.osmosdr_source_0.set_center_freq(self.center_freq, 0) self.qtgui_freq_sink_x_0.set_frequency_range(self.center_freq, self.samp_rate) def main(top_block_cls=default, options=None): qapp = Qt.QApplication(sys.argv) tb = top_block_cls() tb.start() tb.flowgraph_started.set() tb.show() def sig_handler(sig=None, frame=None): tb.stop() tb.wait() 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) qapp.exec_() if __name__ == '__main__': main()