问题描述
那生成了这个top_block:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: Not titled yet
# Author: alessandro
# GNU Radio version: 3.8.1.0
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 gnuradio import analog
from gnuradio import gr
from gnuradio.filter import firdes
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
import osmosdr
import time
from gnuradio import qtgui
class test(gr.top_block,Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self,"Not titled yet")
Qt.QWidget.__init__(self)
self.setwindowTitle("Not titled yet")
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","test")
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 = 2000000
##################################################
# Blocks
##################################################
self.osmosdr_sink_0 = osmosdr.sink(
args="numchan=" + str(1) + " " + ""
)
self.osmosdr_sink_0.set_time_unkNown_pps(osmosdr.time_spec_t())
self.osmosdr_sink_0.set_sample_rate(samp_rate)
self.osmosdr_sink_0.set_center_freq(100e6,0)
self.osmosdr_sink_0.set_freq_corr(0,0)
self.osmosdr_sink_0.set_gain(10,0)
self.osmosdr_sink_0.set_if_gain(20,0)
self.osmosdr_sink_0.set_bb_gain(20,0)
self.osmosdr_sink_0.set_antenna('',0)
self.osmosdr_sink_0.set_bandwidth(0,0)
self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate,analog.GR_COS_WAVE,1000,1,0)
##################################################
# Connections
##################################################
self.connect((self.analog_sig_source_x_0,0),(self.osmosdr_sink_0,0))
def closeEvent(self,event):
self.settings = Qt.QSettings("GNU Radio","test")
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.analog_sig_source_x_0.set_sampling_freq(self.samp_rate)
self.osmosdr_sink_0.set_sample_rate(self.samp_rate)
def main(top_block_cls=test,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()
我不知道如何使osmocom Sink以随机不断选择的两个频率进行传输。
我应该安排一段时间吗?事实是我尝试了几件事,但没有任何效果,所以我真的不知道该怎么办。
我想在两个频率之间随机选择,所以像这样:
freqs = [100000000,200000000]
while 1:
freq = random.choice(freqs)
# then osmocom transmits in "freq"
解决方法
似乎您想要的不是random.choice
,而是random.randrange
(还有一些列表解压缩,因此您可以将输入列表用作传递给函数的参数)。 random.randrange(x,y)
的工作方式与random.choice(range(x,y))
相同,但是效率更高。这是link to the documentation on it。
如果您要在最小值和最大值之间使用随机频率,则代码应看起来像这样:
freqs = [100000000,200000000]
while True:
# Doing *freqs unpacks the list so you can use it as
# arguments to random.randrange
freq = random.randrange(*freqs)
# your other code stuff
当随机化似乎是您唯一的问题时,我不确定为什么要将其他代码放在那里。如果这与当前的问题有关,那么我将不得不请您澄清问题,因为正如现在所说的那样,看起来就是这样。