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#!/usr/bin/env python
from gnuradio import gr, blks2
from gnuradio.qtgui import qtgui
from PyQt4 import QtGui, QtCore
import sys, sip
import scipy
class dialog_box(QtGui.QWidget):
def __init__(self, display_tx, display_rx, channel):
QtGui.QWidget.__init__(self, None)
self.setWindowTitle('Digital Signal Examples')
self.control = control_panel(channel, self)
hlayout = QtGui.QHBoxLayout()
hlayout.addWidget(display_tx)
hlayout.addWidget(display_rx)
hlayout.setGeometry(QtCore.QRect(0,0,100,100))
vlayout = QtGui.QVBoxLayout()
vlayout.addLayout(hlayout)
vlayout.addLayout(self.control.layout, -1)
#vlayout.addStretch(-1)
self.setLayout(vlayout)
self.resize(1000, 1000)
class control_panel(QtGui.QWidget):
def __init__(self, channel, parent=None):
QtGui.QWidget.__init__(self, parent)
self.setWindowTitle('Control Panel')
self.channel = channel
self.layout = QtGui.QFormLayout()
# Set channel noise
self.noiseEdit = QtGui.QLineEdit(self)
self.layout.addRow("Noise Amplitude:", self.noiseEdit)
self.connect(self.noiseEdit, QtCore.SIGNAL("editingFinished()"),
self.noiseEditText)
# Set channel frequency offset
self.freqEdit = QtGui.QLineEdit(self)
self.layout.addRow("Frequency Offset:", self.freqEdit)
self.connect(self.freqEdit, QtCore.SIGNAL("editingFinished()"),
self.freqEditText)
# Set channel timing offset
self.timeEdit = QtGui.QLineEdit(self)
self.layout.addRow("Timing Offset:", self.timeEdit)
self.connect(self.timeEdit, QtCore.SIGNAL("editingFinished()"),
self.timeEditText)
self.quit = QtGui.QPushButton('Close', self)
self.layout.addRow(self.quit)
self.connect(self.quit, QtCore.SIGNAL('clicked()'),
QtGui.qApp, QtCore.SLOT('quit()'))
def set_noise(self, noise):
self.noise = noise
self.noiseEdit.setText(QtCore.QString("%1").arg(self.noise))
def set_frequency(self, freq):
self.freq = freq
self.freqEdit.setText(QtCore.QString("%1").arg(self.freq))
def set_time_offset(self, to):
self.timing_offset = to
self.timeEdit.setText(QtCore.QString("%1").arg(self.timing_offset))
def noiseEditText(self):
try:
noise = self.noiseEdit.text().toDouble()[0]
self.channel.set_noise_voltage(noise)
self.noise = noise
except RuntimeError:
pass
def freqEditText(self):
try:
freq = self.freqEdit.text().toDouble()[0]
self.channel.set_frequency_offset(freq)
self.freq = freq
except RuntimeError:
pass
def timeEditText(self):
try:
to = self.timeEdit.text().toDouble()[0]
self.channel.set_timing_offset(to)
self.timing_offset = to
except RuntimeError:
pass
class my_top_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
self.qapp = QtGui.QApplication(sys.argv)
sps = 2
excess_bw = 0.35
gray_code = True
fftsize = 2048
data = scipy.random.randint(0, 255, 1000)
src = gr.vector_source_b(data, True)
mod = blks2.dqpsk_mod(sps, excess_bw, gray_code, False, False)
rrctaps = gr.firdes.root_raised_cosine(1, sps, 1, excess_bw, 21)
rx_rrc = gr.fir_filter_ccf(sps, rrctaps)
noise = 1e-7
fo = 1e-6
to = 1.0
channel = gr.channel_model(noise, fo, to)
thr = gr.throttle(gr.sizeof_gr_complex, 10*fftsize)
self.snk_tx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, -1/2, 1/2,
"Tx", True, True, False, True, True)
self.snk_rx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, -1/2, 1/2,
"Rx", True, True, False, True, True)
self.connect(src, mod, channel, self.snk_tx)
self.connect(channel, rx_rrc, thr, self.snk_rx)
pyTxQt = self.snk_tx.pyqwidget()
pyTx = sip.wrapinstance(pyTxQt, QtGui.QWidget)
pyRxQt = self.snk_rx.pyqwidget()
pyRx = sip.wrapinstance(pyRxQt, QtGui.QWidget)
self.main_box = dialog_box(pyTx, pyRx, channel)
self.main_box.control.set_noise(noise)
self.main_box.control.set_frequency(fo)
self.main_box.control.set_time_offset(to)
self.main_box.show()
if __name__ == "__main__":
tb = my_top_block();
tb.start()
tb.qapp.exec_()
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