Am getting the following error when trying to run a GRC flowgraph that loads
FFT filter taps from an external file. The type filter parameter is set to
complex->complex (complex taps).
The flow graph has imported numpy. The taps are loaded using:
numpy.fromfile('/home/tom/Desktop/EchoScreencaps/chirp-down-20-20-131072',
numpy.complex64)
as the taps parameter. What does the error below mean?
GRC: v3.7.4git-101-g76970d54
Ubuntu 13.10
top_block.py is attached.
-- Tom, N5EG
Traceback (most recent call last):
File "/home/tom/Desktop/EchoScreencaps/top_block.py", line 173, in <module>
tb = top_block()
File "/home/tom/Desktop/EchoScreencaps/top_block.py", line 115, in __init__
self.fft_filter_xxx_0 = filter.fft_filter_ccc(1,
(numpy.fromfile('/home/tom/Desktop/EchoScreencaps/chirp-down-20-20-131072',
numpy.complex64)), 1)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/filter/filter_swig.py",
line 1329, in make
return _filter_swig.fft_filter_ccc_make(*args, **kwargs)
TypeError: in method 'fft_filter_ccc_make', argument 2 of type 'std::vector<
gr_complex,std::allocator< gr_complex > > const &'#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Generated: Sat Apr 19 09:34:24 2014
##################################################
execfile("/home/tom/.grc_gnuradio/ChirpSource.py")
from PyQt4 import Qt
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio import qtgui
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from optparse import OptionParser
import hpsdr
import numpy
import sip
import sys
class top_block(gr.top_block, Qt.QWidget):
def __init__(self):
gr.top_block.__init__(self, "Top Block")
Qt.QWidget.__init__(self)
self.setWindowTitle("Top Block")
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", "top_block")
self.restoreGeometry(self.settings.value("geometry").toByteArray())
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 48000
self.TxDrive = TxDrive = 0
self.Frequency = Frequency = 3525000
##################################################
# Blocks
##################################################
self._TxDrive_tool_bar = Qt.QToolBar(self)
self._TxDrive_tool_bar.addWidget(Qt.QLabel("TxDrive"+": "))
self._TxDrive_line_edit = Qt.QLineEdit(str(self.TxDrive))
self._TxDrive_tool_bar.addWidget(self._TxDrive_line_edit)
self._TxDrive_line_edit.returnPressed.connect(
lambda: self.set_TxDrive(int(self._TxDrive_line_edit.text().toAscii())))
self.top_layout.addWidget(self._TxDrive_tool_bar)
self._Frequency_tool_bar = Qt.QToolBar(self)
self._Frequency_tool_bar.addWidget(Qt.QLabel("Frequency"+": "))
self._Frequency_line_edit = Qt.QLineEdit(str(self.Frequency))
self._Frequency_tool_bar.addWidget(self._Frequency_line_edit)
self._Frequency_line_edit.returnPressed.connect(
lambda: self.set_Frequency(int(self._Frequency_line_edit.text().toAscii())))
self.top_layout.addWidget(self._Frequency_tool_bar)
self.qtgui_time_sink_x_0 = qtgui.time_sink_c(
131072, #size
samp_rate, #samp_rate
"QT GUI Plot", #name
1 #number of inputs
)
self.qtgui_time_sink_x_0.set_update_time(0.10)
self.qtgui_time_sink_x_0.set_y_axis(-1, 1)
self.qtgui_time_sink_x_0.enable_tags(-1, True)
self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
self.qtgui_time_sink_x_0.enable_autoscale(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", "blue"]
styles = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
markers = [-1, -1, -1, -1, -1,
-1, -1, -1, -1, -1]
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]
for i in xrange(2*1):
if len(labels[i]) == 0:
if(i % 2 == 0):
self.qtgui_time_sink_x_0.set_line_label(i, "Re{{Data {0}}}".format(i/2))
else:
self.qtgui_time_sink_x_0.set_line_label(i, "Im{{Data {0}}}".format(i/2))
else:
self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])
self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
self.top_layout.addWidget(self._qtgui_time_sink_x_0_win)
self.hpsdr_hermesNB_0 = hpsdr.hermesNB(Frequency, 7200000, Frequency, 1, 2, 0, 0, TxDrive, samp_rate, "eth0", "0xF8", "0x00000000", 1)
self.fft_filter_xxx_0 = filter.fft_filter_ccc(1, (numpy.fromfile('/home/tom/Desktop/EchoScreencaps/chirp-down-20-20-131072', numpy.complex64)), 1)
self.fft_filter_xxx_0.declare_sample_delay(0)
self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((5, ))
self.ChirpSource_0 = ChirpSource(20, 48000, 0, 0.95, 20000, 0)
##################################################
# Connections
##################################################
self.connect((self.ChirpSource_0, 0), (self.hpsdr_hermesNB_0, 0))
self.connect((self.hpsdr_hermesNB_0, 0), (self.blocks_multiply_const_vxx_0, 0))
self.connect((self.blocks_multiply_const_vxx_0, 0), (self.fft_filter_xxx_0, 0))
self.connect((self.fft_filter_xxx_0, 0), (self.qtgui_time_sink_x_0, 0))
# QT sink close method reimplementation
def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "top_block")
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.hpsdr_hermesNB_0.set_RxSampRate(self.samp_rate)
self.qtgui_time_sink_x_0.set_samp_rate(self.samp_rate)
def get_TxDrive(self):
return self.TxDrive
def set_TxDrive(self, TxDrive):
self.TxDrive = TxDrive
self.hpsdr_hermesNB_0.set_TxDrive(self.TxDrive)
Qt.QMetaObject.invokeMethod(self._TxDrive_line_edit, "setText", Qt.Q_ARG("QString", str(self.TxDrive)))
def get_Frequency(self):
return self.Frequency
def set_Frequency(self, Frequency):
self.Frequency = Frequency
self.hpsdr_hermesNB_0.set_Receive0Frequency(self.Frequency)
self.hpsdr_hermesNB_0.set_TransmitFrequency(self.Frequency)
Qt.QMetaObject.invokeMethod(self._Frequency_line_edit, "setText", Qt.Q_ARG("QString", str(self.Frequency)))
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()"
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
(options, args) = parser.parse_args()
Qt.QApplication.setGraphicsSystem(gr.prefs().get_string('qtgui','style','raster'))
qapp = Qt.QApplication(sys.argv)
tb = top_block()
tb.start()
tb.show()
def quitting():
tb.stop()
tb.wait()
qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
qapp.exec_()
tb = None #to clean up Qt widgets
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