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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
import sys
try:
from gnuradio.qtgui import qtgui
from PyQt4 import QtGui, QtCore
import sip
except ImportError:
print "Please install gr-qtgui."
sys.exit(1)
try:
from usrp_display_qtgui import Ui_MainWindow
except ImportError:
print "Error: could not find usrp_display_qtgui.py:"
print "\t\"pyuic4 usrp_display_qtgui.ui -o usrp_display_qtgui.py\""
sys.exit(1)
# ////////////////////////////////////////////////////////////////////
# Define the QT Interface and Control Dialog
# ////////////////////////////////////////////////////////////////////
class main_window(QtGui.QMainWindow):
def __init__(self, snk, fg, parent=None):
QtGui.QWidget.__init__(self, parent)
self.gui = Ui_MainWindow()
self.gui.setupUi(self)
self.fg = fg
# Add the qtsnk widgets to the layout box
self.gui.sinkLayout.addWidget(snk)
# Connect up some signals
self.connect(self.gui.pauseButton, QtCore.SIGNAL("clicked()"),
self.pauseFg)
self.connect(self.gui.frequencyEdit, QtCore.SIGNAL("editingFinished()"),
self.frequencyEditText)
self.connect(self.gui.gainEdit, QtCore.SIGNAL("editingFinished()"),
self.gainEditText)
self.connect(self.gui.bandwidthEdit, QtCore.SIGNAL("editingFinished()"),
self.bandwidthEditText)
self.connect(self.gui.amplifierEdit, QtCore.SIGNAL("editingFinished()"),
self.amplifierEditText)
self.connect(self.gui.actionSaveData, QtCore.SIGNAL("activated()"),
self.saveData)
self.gui.actionSaveData.setShortcut(QtGui.QKeySequence.Save)
def pauseFg(self):
if(self.gui.pauseButton.text() == "Pause"):
self.fg.stop()
self.fg.wait()
self.gui.pauseButton.setText("Unpause")
else:
self.fg.start()
self.gui.pauseButton.setText("Pause")
# Functions to set the values in the GUI
def set_frequency(self, freq):
self.freq = freq
sfreq = eng_notation.num_to_str(self.freq)
self.gui.frequencyEdit.setText(QtCore.QString("%1").arg(sfreq))
def set_gain(self, gain):
self.gain = gain
self.gui.gainEdit.setText(QtCore.QString("%1").arg(self.gain))
def set_bandwidth(self, bw):
self.bw = bw
sbw = eng_notation.num_to_str(self.bw)
self.gui.bandwidthEdit.setText(QtCore.QString("%1").arg(sbw))
def set_amplifier(self, bw):
self.amp = amp
self.gui.amplifierEdit.setText(QtCore.QString("%1").arg(self.amp))
# Functions called when signals are triggered in the GUI
def frequencyEditText(self):
try:
freq = eng_notation.str_to_num(self.gui.frequencyEdit.text().toAscii())
self.fg.set_frequency(freq)
self.freq = freq
except RuntimeError:
pass
def gainEditText(self):
try:
gain = float(self.gui.gainEdit.text())
self.fg.set_gain(gain)
self.gain = gain
except ValueError:
pass
def bandwidthEditText(self):
try:
bw = eng_notation.str_to_num(self.gui.bandwidthEdit.text().toAscii())
self.fg.set_bandwidth(bw)
self.bw = bw
except ValueError:
pass
def amplifierEditText(self):
try:
amp = float(self.gui.amplifierEdit.text())
self.fg.set_amplifier_gain(amp)
self.amp = amp
except ValueError:
pass
def saveData(self):
fileName = QtGui.QFileDialog.getSaveFileName(self, "Save data to file", ".");
if(len(fileName)):
self.fg.save_to_file(str(fileName))
def pick_subdevice(u):
"""
The user didn't specify a subdevice on the command line.
If there's a daughterboard on A, select A.
If there's a daughterboard on B, select B.
Otherwise, select A.
"""
if u.db(0, 0).dbid() >= 0: # dbid is < 0 if there's no d'board or a problem
return (0, 0)
if u.db(0, 0).dbid() >= 0:
return (1, 0)
return (0, 0)
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("-W", "--bw", type="float", default=1e6,
help="set bandwidth of receiver [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("-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._fftsize = 2048
self.u = usrp.source_c(which=options.which)
self._adc_rate = self.u.converter_rate()
self.set_bandwidth(options.bw)
if options.rx_subdev_spec is None:
options.rx_subdev_spec = pick_subdevice(self.u)
self._rx_subdev_spec = options.rx_subdev_spec
self.u.set_mux(usrp.determine_rx_mux_value(self.u, self._rx_subdev_spec))
self.subdev = usrp.selected_subdev(self.u, self._rx_subdev_spec)
self._gain_range = self.subdev.gain_range()
if options.gain is None:
# if no gain was specified, use the mid-point in dB
g = self._gain_range
options.gain = float(g[0]+g[1])/2
self.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.set_frequency(options.freq)
self.snk = qtgui.sink_c(self._fftsize, gr.firdes.WIN_BLACKMAN_hARRIS,
self._freq, self._bandwidth,
"USRP Display",
True, True, False, True, False)
# Set up internal amplifier
self.amp = gr.multiply_const_cc(0.0)
self.set_amplifier_gain(0.001)
# Connect the flow graph
self.connect(self.u, self.amp, self.snk)
# Get the reference pointer to the SpectrumDisplayForm QWidget
# Wrap the pointer as a PyQt SIP object
# This can now be manipulated as a PyQt4.QtGui.QWidget
self.pysink = sip.wrapinstance(self.snk.pyqwidget(), QtGui.QWidget)
self.main_win = main_window(self.pysink, self)
self.main_win.set_frequency(self._freq)
self.main_win.set_gain(self._gain)
self.main_win.set_bandwidth(self._bandwidth)
self.main_win.show()
def save_to_file(self, name):
# Pause the flow graph
self.stop()
self.wait()
# Add file sink to save data
self.file_sink = gr.file_sink(gr.sizeof_gr_complex, name)
self.connect(self.amp, self.file_sink)
# Restart flow graph
self.start()
def set_gain(self, gain):
self._gain = gain
self.subdev.set_gain(self._gain)
def set_frequency(self, freq):
self._freq = freq
self.u.tune(0, self.subdev, self._freq)
try:
self.snk.set_frequency_range(self._freq, self._bandwidth)
except:
pass
def set_bandwidth(self, bw):
self._bandwidth = bw
self._decim = int(self._adc_rate / self._bandwidth)
self.u.set_decim_rate(self._decim)
try:
self.snk.set_frequency_range(self._freq, self._bandwidth)
except:
pass
def set_amplifier_gain(self, amp):
self._amp_value = amp
self.amp.set_k(self._amp_value)
if __name__ == "__main__":
tb = my_top_block();
tb.start()
tb.qapp.exec_()
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