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#!/usr/bin/env python
from gnuradio import gr
from gnuradio import usrp
from gnuradio import eng_notation
from gnuradio.eng_option import eng_option
from gnuradio.qtgui import qtgui
from optparse import OptionParser
from PyQt4 import QtGui, QtCore
import sys, sip
class dialog_box(QtGui.QWidget):
def __init__(self, display, control):
QtGui.QWidget.__init__(self, None)
self.setWindowTitle('USRP FFT')
self.boxlayout = QtGui.QBoxLayout(QtGui.QBoxLayout.LeftToRight, self)
self.boxlayout.addWidget(display, 1)
self.boxlayout.addWidget(control)
self.resize(800, 500)
class control_panel(QtGui.QWidget):
def __init__(self, usrp, subdev, qtsink, parent=None):
QtGui.QWidget.__init__(self, parent)
self.setWindowTitle('USRP Control Panel')
self.usrp = usrp
self.subdev = subdev
self.qtsink = qtsink
self.adc_rate = self.usrp.converter_rate()
self.freq = 0
self.decim = 0
self.bw = 0
self.gain = 0
self.setToolTip('Set the values of the USRP')
QtGui.QToolTip.setFont(QtGui.QFont('OldEnglish', 10))
self.layout = QtGui.QFormLayout(self)
# Received frequency
self.freqEdit = QtGui.QLineEdit(self)
self.layout.addRow("Frequency:", self.freqEdit)
self.connect(self.freqEdit, QtCore.SIGNAL("editingFinished()"),
self.freqEditText)
# Receiver gain
self.gainEdit = QtGui.QLineEdit(self)
self.layout.addRow("Gain:", self.gainEdit)
self.connect(self.gainEdit, QtCore.SIGNAL("editingFinished()"),
self.gainEditText)
# Decim / Bandwidth
self.decimEdit = QtGui.QLineEdit(self)
self.layout.addRow("Decim Rate:", self.decimEdit)
self.connect(self.decimEdit, QtCore.SIGNAL("editingFinished()"),
self.decimEditText)
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_frequency(self, freq):
self.freq = freq
sfreq = eng_notation.num_to_str(self.freq)
self.freqEdit.setText(QtCore.QString("%1").arg(sfreq))
def set_gain(self, gain):
self.gain = gain
self.gainEdit.setText(QtCore.QString("%1").arg(self.gain))
def set_decim(self, decim):
self.decim = decim
self.bw = self.adc_rate / float(self.decim) / 1000.0
self.decimEdit.setText(QtCore.QString("%1").arg(self.decim))
def freqEditText(self):
try:
freq = eng_notation.str_to_num(self.freqEdit.text().toAscii())
self.usrp.tune(0, self.subdev, freq)
self.freq = freq
self.qtsink.set_frequency_range(self.freq, self.freq-self.bw/2.0, self.freq+self.bw/2.0)
except RuntimeError:
pass
#self.set_frequency(self.freq)
def gainEditText(self):
try:
gain = float(self.gainEdit.text())
self.subdev.set_gain(gain)
self.gain = gain
except ValueError:
pass
#self.set_gain(gain)
def decimEditText(self):
try:
decim = int(self.decimEdit.text())
self.usrp.set_decim_rate(decim)
self.decim = decim
self.bw = self.adc_rate / self.decim
self.qtsink.set_frequency_range(-self.bw/2.0, self.bw/2.0, self.freq)
except ValueError:
pass
#self.set_decim(decim)
class my_top_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
parser = OptionParser(option_class=eng_option)
parser.add_option("-w", "--which", type="int", default=0,
help="select which USRP (0, 1, ...) default is %default",
metavar="NUM")
parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
help="select USRP Rx side A or B (default=first one with a daughterboard)")
parser.add_option("-A", "--antenna", default=None,
help="select Rx Antenna (only on RFX-series boards)")
parser.add_option("-d", "--decim", type="int", default=16,
help="set fgpa decimation rate to DECIM [default=%default]")
parser.add_option("-f", "--freq", type="eng_float", default=None,
help="set frequency to FREQ", metavar="FREQ")
parser.add_option("-g", "--gain", type="eng_float", default=None,
help="set gain in dB [default is midpoint]")
parser.add_option("-W", "--waterfall", action="store_true", default=False,
help="Enable waterfall display")
parser.add_option("-8", "--width-8", action="store_true", default=False,
help="Enable 8-bit samples across USB")
parser.add_option( "--no-hb", action="store_true", default=False,
help="don't use halfband filter in usrp")
parser.add_option("-S", "--oscilloscope", action="store_true", default=False,
help="Enable oscilloscope display")
parser.add_option("", "--avg-alpha", type="eng_float", default=1e-1,
help="Set fftsink averaging factor, [default=%default]")
parser.add_option("", "--ref-scale", type="eng_float", default=13490.0,
help="Set dBFS=0dB input value, [default=%default]")
parser.add_option("", "--fft-size", type="int", default=1024,
help="Set FFT frame size, [default=%default]");
(options, args) = parser.parse_args()
if len(args) != 0:
parser.print_help()
sys.exit(1)
self.options = options
self.show_debug_info = True
# Call this before creating the Qt sink
self.qapp = QtGui.QApplication(sys.argv)
self.u = usrp.source_c(which=options.which, decim_rate=options.decim)
rx_subdev_spec = (0,0)
self.u.set_mux(usrp.determine_rx_mux_value(self.u, rx_subdev_spec))
self.subdev = usrp.selected_subdev(self.u, rx_subdev_spec)
if options.gain is None:
# if no gain was specified, use the mid-point in dB
g = self.subdev.gain_range()
options.gain = float(g[0]+g[1])/2
self.subdev.set_gain(options.gain)
if options.freq is None:
# if no frequency was specified, use the mid-point of the subdev
f = self.subdev.freq_range()
options.freq = float(f[0]+f[1])/2
self.u.tune(0, self.subdev, options.freq)
fftsize = 2048
input_rate = self.u.converter_rate() / self.u.decim_rate()
self.snk = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS,
-input_rate/2, input_rate/2,
"USRP Display",
True, True, False, True, False)
amp = gr.multiply_const_cc(0.001)
self.connect(self.u, amp, self.snk)
self.ctrl_win = control_panel(self.u, self.subdev, self.snk)
self.ctrl_win.set_frequency(options.freq)
self.ctrl_win.set_gain(options.gain)
self.ctrl_win.set_decim(options.decim)
# Get the reference pointer to the SpectrumDisplayForm QWidget
pyQt = self.snk.pyqwidget()
# Wrap the pointer as a PyQt SIP object
# This can now be manipulated as a PyQt4.QtGui.QWidget
pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)
self.main_box = dialog_box(pyWin, self.ctrl_win)
self.main_box.show()
if __name__ == "__main__":
tb = my_top_block();
tb.start()
tb.qapp.exec_()
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