UNABLE TO USE THE FMCOMM BLOCKS IN GNU RADIO 3.10.5

Moved to Virtual Classroom for ADI University Program section.

Thanks,
Dragos

Can you provide the full python code?

-Travis

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: Adalm-Pluto Radar
# GNU Radio version: 3.10.4.0

from packaging.version import Version as 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 PyQt5 import Qt
from gnuradio import qtgui
from gnuradio.filter import firdes
import sip
from gnuradio import analog
from gnuradio import filter
from gnuradio import gr
from gnuradio.fft import window
import sys
import signal
from argparse import ArgumentParser
from gnuradio.eng_arg import eng_float, intx
from gnuradio import eng_notation
from gnuradio import iio
from gnuradio.qtgui import Range, GrRangeWidget
from PyQt5 import QtCore

from gnuradio import qtgui

class Radar(gr.top_block, Qt.QWidget):

def __init__(self):
gr.top_block.__init__(self, "Adalm-Pluto Radar", catch_exceptions=True)
Qt.QWidget.__init__(self)
self.setWindowTitle("Adalm-Pluto Radar")
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", "Radar")

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.tx_att = tx_att = 70
self.tone_freq = tone_freq = 500
self.samp_rate = samp_rate = 2.304e6
self.rx_gain = rx_gain = 20

##################################################
# Blocks
##################################################
self._tx_att_range = Range(0, 100, 1, 70, 200)
self._tx_att_win = GrRangeWidget(self._tx_att_range, self.set_tx_att, "'tx_att'", "counter_slider", float, QtCore.Qt.Horizontal, "value")

self.top_layout.addWidget(self._tx_att_win)
self._tone_freq_range = Range(1, 1000, 1, 500, 200)
self._tone_freq_win = GrRangeWidget(self._tone_freq_range, self.set_tone_freq, "'tone_freq'", "counter_slider", float, QtCore.Qt.Horizontal, "value")

self.top_layout.addWidget(self._tone_freq_win)
self._rx_gain_range = Range(0, 73, 1, 20, 200)
self._rx_gain_win = GrRangeWidget(self._rx_gain_range, self.set_rx_gain, "'rx_gain'", "counter_slider", float, QtCore.Qt.Horizontal, "value")

self.top_layout.addWidget(self._rx_gain_win)
self.qtgui_time_sink_0 = qtgui.time_sink_c(
1024, #size
samp_rate, #samp_rate
"", #name
1, #number of inputs
None # parent
)
self.qtgui_time_sink_0.set_update_time(0.10)
self.qtgui_time_sink_0.set_y_axis(-1, 1)

self.qtgui_time_sink_0.set_y_label('Amplitude', "")

self.qtgui_time_sink_0.enable_tags(True)
self.qtgui_time_sink_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
self.qtgui_time_sink_0.enable_autoscale(False)
self.qtgui_time_sink_0.enable_grid(False)
self.qtgui_time_sink_0.enable_axis_labels(True)
self.qtgui_time_sink_0.enable_control_panel(False)
self.qtgui_time_sink_0.enable_stem_plot(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', 'dark blue']
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]
styles = [1, 1, 1, 1, 1,
1, 1, 1, 1, 1]
markers = [-1, -1, -1, -1, -1,
-1, -1, -1, -1, -1]

for i in range(2):
if len(labels[i]) == 0:
if (i % 2 == 0):
self.qtgui_time_sink_0.set_line_label(i, "Re{{Data {0}}}".format(i/2))
else:
self.qtgui_time_sink_0.set_line_label(i, "Im{{Data {0}}}".format(i/2))
else:
self.qtgui_time_sink_0.set_line_label(i, labels[i])
self.qtgui_time_sink_0.set_line_width(i, widths[i])
self.qtgui_time_sink_0.set_line_color(i, colors[i])
self.qtgui_time_sink_0.set_line_style(i, styles[i])
self.qtgui_time_sink_0.set_line_marker(i, markers[i])
self.qtgui_time_sink_0.set_line_alpha(i, alphas[i])

self._qtgui_time_sink_0_win = sip.wrapinstance(self.qtgui_time_sink_0.qwidget(), Qt.QWidget)
self.top_layout.addWidget(self._qtgui_time_sink_0_win)
self.qtgui_freq_sink_0 = qtgui.freq_sink_c(
1024, #size
window.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"", #name
1,
None # parent
)
self.qtgui_freq_sink_0.set_update_time(0.10)
self.qtgui_freq_sink_0.set_y_axis((-140), 10)
self.qtgui_freq_sink_0.set_y_label('Relative Gain', 'dB')
self.qtgui_freq_sink_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
self.qtgui_freq_sink_0.enable_autoscale(False)
self.qtgui_freq_sink_0.enable_grid(False)
self.qtgui_freq_sink_0.set_fft_average(1.0)
self.qtgui_freq_sink_0.enable_axis_labels(True)
self.qtgui_freq_sink_0.enable_control_panel(False)
self.qtgui_freq_sink_0.set_fft_window_normalized(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", "dark blue"]
alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
1.0, 1.0, 1.0, 1.0, 1.0]

for i in range(1):
if len(labels[i]) == 0:
self.qtgui_freq_sink_0.set_line_label(i, "Data {0}".format(i))
else:
self.qtgui_freq_sink_0.set_line_label(i, labels[i])
self.qtgui_freq_sink_0.set_line_width(i, widths[i])
self.qtgui_freq_sink_0.set_line_color(i, colors[i])
self.qtgui_freq_sink_0.set_line_alpha(i, alphas[i])

self._qtgui_freq_sink_0_win = sip.wrapinstance(self.qtgui_freq_sink_0.qwidget(), Qt.QWidget)
self.top_layout.addWidget(self._qtgui_freq_sink_0_win)
self.low_pass_filter_0 = filter.fir_filter_ccf(
50,
firdes.low_pass(
1,
samp_rate,
(tone_freq*2),
250,
window.WIN_HAMMING,
6.76))
self.iio_pluto_source_0 = iio.fmcomms2_source_fc32('' if '' else iio.get_pluto_uri(), [True, True], 32768)
self.iio_pluto_source_0.set_len_tag_key('packet_len')
self.iio_pluto_source_0.set_frequency(3500000000)
self.iio_pluto_source_0.set_samplerate(int(samp_rate))
self.iio_pluto_source_0.set_gain_mode(0, 'manual')
self.iio_pluto_source_0.set_gain(0, rx_gain)
self.iio_pluto_source_0.set_quadrature(True)
self.iio_pluto_source_0.set_rfdc(True)
self.iio_pluto_source_0.set_bbdc(True)
self.iio_pluto_source_0.set_filter_params('Auto', '', 0, 0)
self.iio_pluto_sink_0 = iio.fmcomms2_sink_fc32('' if '' else iio.get_pluto_uri(), [True, True], 32768, False)
self.iio_pluto_sink_0.set_len_tag_key('')
self.iio_pluto_sink_0.set_bandwidth((int(samp_rate/2)))
self.iio_pluto_sink_0.set_frequency(3500000000)
self.iio_pluto_sink_0.set_samplerate(int(samp_rate))
self.iio_pluto_sink_0.set_attenuation(0, tx_att)
self.iio_pluto_sink_0.set_filter_params('Auto', '', 0, 0)
self.analog_sig_source_0 = analog.sig_source_c(samp_rate, analog.GR_SIN_WAVE, tone_freq, 1, 0, 0)

##################################################
# Connections
##################################################
self.connect((self.analog_sig_source_0, 0), (self.iio_pluto_sink_0, 0))
self.connect((self.iio_pluto_source_0, 0), (self.low_pass_filter_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.qtgui_freq_sink_0, 0))
self.connect((self.low_pass_filter_0, 0), (self.qtgui_time_sink_0, 0))

def closeEvent(self, event):
self.settings = Qt.QSettings("GNU Radio", "Radar")
self.settings.setValue("geometry", self.saveGeometry())
self.stop()
self.wait()

event.accept()

def get_tx_att(self):
return self.tx_att

def set_tx_att(self, tx_att):
self.tx_att = tx_att
self.iio_pluto_sink_0.set_attenuation(0,self.tx_att)

def get_tone_freq(self):
return self.tone_freq

def set_tone_freq(self, tone_freq):
self.tone_freq = tone_freq
self.analog_sig_source_0.set_frequency(self.tone_freq)
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, (self.tone_freq*2), 250, window.WIN_HAMMING, 6.76))

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_0.set_sampling_freq(self.samp_rate)
self.iio_pluto_sink_0.set_bandwidth((int(self.samp_rate/2)))
self.iio_pluto_sink_0.set_samplerate(int(self.samp_rate))
self.iio_pluto_source_0.set_samplerate(int(self.samp_rate))
self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate, (self.tone_freq*2), 250, window.WIN_HAMMING, 6.76))
self.qtgui_freq_sink_0.set_frequency_range(0, self.samp_rate)
self.qtgui_time_sink_0.set_samp_rate(self.samp_rate)

def get_rx_gain(self):
return self.rx_gain

def set_rx_gain(self, rx_gain):
self.rx_gain = rx_gain
self.iio_pluto_source_0.set_gain(0, self.rx_gain)

def main(top_block_cls=Radar, options=None):
if gr.enable_realtime_scheduling() != gr.RT_OK:
print("Error: failed to enable real-time scheduling.")

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):
tb.stop()
tb.wait()

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)

qapp.exec_()

if __name__ == '__main__':
main()

Can you manually specify the context as the IP of your Pluto? Are you able to access Pluto through IP of other tools like IIO-Scope?

-Travis

Im getting the same error while just trying to rx in the FM demod tutorial

Im getting the same error while just trying to rx in the FM demod tutorial

89echo can you create a separate thread with the flowgraph and the output of an "iio_info -S" scan from the terminal.

-Travos