#!/usr/bin/env python3 # -*- coding: utf-8 -*- # # SPDX-License-Identifier: GPL-3.0 # # GNU Radio Python Flow Graph # Title: Lora Receive Realtime # 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 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 eng_notation import lora import osmosdr import time from gnuradio import qtgui class lora_receive_realtime(gr.top_block, Qt.QWidget): def __init__(self): gr.top_block.__init__(self, "Lora Receive Realtime") Qt.QWidget.__init__(self) self.setWindowTitle("Lora Receive Realtime") 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_receive_realtime") 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.sf = sf = 11 self.bw = bw = 125000 self.target_freq = target_freq = 868.1e6 self.symbols_per_sec = symbols_per_sec = float(bw) / (2**sf) self.samp_rate = samp_rate = 1e6 self.decimation = decimation = 1 self.capture_freq = capture_freq = 868e6 self.bitrate = bitrate = sf * (1 / (2**sf / float(bw))) ################################################## # Blocks ################################################## self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c( 1024, #size firdes.WIN_BLACKMAN_hARRIS, #wintype capture_freq, #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(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.pyqwidget(), Qt.QWidget) self.top_grid_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(capture_freq, 0) self.osmosdr_source_0.set_freq_corr(0, 0) self.osmosdr_source_0.set_gain(10, 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.lora_message_socket_sink_0 = lora.message_socket_sink('127.0.0.1', 40868, 0) self.lora_lora_receiver_0 = lora.lora_receiver(1e6, capture_freq, [target_freq], bw, sf, False, 4, True, False, False, decimation, False, False) ################################################## # Connections ################################################## self.msg_connect((self.lora_lora_receiver_0, 'frames'), (self.lora_message_socket_sink_0, 'in')) self.connect((self.osmosdr_source_0, 0), (self.lora_lora_receiver_0, 0)) self.connect((self.osmosdr_source_0, 0), (self.qtgui_freq_sink_x_0, 0)) def closeEvent(self, event): self.settings = Qt.QSettings("GNU Radio", "lora_receive_realtime") self.settings.setValue("geometry", self.saveGeometry()) event.accept() def get_sf(self): return self.sf def set_sf(self, sf): self.sf = sf self.set_bitrate(self.sf * (1 / (2**self.sf / float(self.bw)))) self.set_symbols_per_sec(float(self.bw) / (2**self.sf)) self.lora_lora_receiver_0.set_sf(self.sf) def get_bw(self): return self.bw def set_bw(self, bw): self.bw = bw self.set_bitrate(self.sf * (1 / (2**self.sf / float(self.bw)))) self.set_symbols_per_sec(float(self.bw) / (2**self.sf)) def get_target_freq(self): return self.target_freq def set_target_freq(self, target_freq): self.target_freq = target_freq def get_symbols_per_sec(self): return self.symbols_per_sec def set_symbols_per_sec(self, symbols_per_sec): self.symbols_per_sec = symbols_per_sec 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.qtgui_freq_sink_x_0.set_frequency_range(self.capture_freq, self.samp_rate) def get_decimation(self): return self.decimation def set_decimation(self, decimation): self.decimation = decimation def get_capture_freq(self): return self.capture_freq def set_capture_freq(self, capture_freq): self.capture_freq = capture_freq self.lora_lora_receiver_0.set_center_freq(self.capture_freq) self.osmosdr_source_0.set_center_freq(self.capture_freq, 0) self.qtgui_freq_sink_x_0.set_frequency_range(self.capture_freq, self.samp_rate) def get_bitrate(self): return self.bitrate def set_bitrate(self, bitrate): self.bitrate = bitrate def main(top_block_cls=lora_receive_realtime, 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()