Here again, struggling with another attempt to transmit in AM instead of
FM, I've copied/modified the grc file found at
https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver
I get the following error line, which I don't understand as it seems to
me identical to the original simulation file
===========
Executing: /usr/bin/python3 -u /home/pi/Desktop/SDR STUFF/top_block.py
File "/home/pi/Desktop/SDR STUFF/top_block.py", line 105
self.uhd_usrp_sink_0.set_normalized_gain(500m, 0)
^
SyntaxError: invalid syntax
>>> Done (return code 1)
=============
Any suggestion? thank you for your time and patience
Stefano
system:
HackRF one
Raspberrypi + usb card for input
GRC 3.8.2.0
Il 30/03/2021 08:23, Marcus Müller ha scritto:
Why are you doing short to float, if the output of the audio source is already
float?
On 30.03.21 01:47, Stefano Zorzanello wrote:
Dear list,
as a newbie I ask you for your help with the attached file. For a
sound-installation
purpose I'd like to transmit a weak signal, which is generated live, over a
particular FM
frequency. In my attempt based on a grc file found here
https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver
<https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver>
I
get errors even if I change the vector lenght to 2 of [short to float] and
[multiply
const] blocks, and I don't know what values to change in order to make it work.
Any help is greatly appreciated,
thank you
stefano
system:
HackRF one
Raspberrypi + usb card for input
GRC 3.8.2.0
options:
parameters:
author: BARRY dUGGAN
category: Custom
cmake_opt: ''
comment: ''
copyright: '2020'
description: ''
gen_cmake: 'On'
gen_linking: dynamic
generate_options: qt_gui
hier_block_src_path: '.:'
id: top_block
max_nouts: '0'
output_language: python
placement: (0,0)
qt_qss_theme: ''
realtime_scheduling: ''
run: 'True'
run_command: '{python} -u {filename}'
run_options: prompt
sizing_mode: fixed
thread_safe_setters: ''
title: AM_TRANSMITTER
window_size: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [8, 8]
rotation: 0
state: enabled
blocks:
- name: VOLUME
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: Audio gain
min_len: '200'
orient: Qt.Horizontal
rangeType: float
start: '0'
step: 100m
stop: '10'
value: '1.2'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [282, 11]
rotation: 0
state: true
- name: freq
id: variable_qtgui_entry
parameters:
comment: ''
gui_hint: ''
label: Frequency
type: real
value: '1805000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [425, 19]
rotation: 0
state: true
- name: samp_rate
id: variable
parameters:
comment: ''
value: '44100'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [185, 10]
rotation: 0
state: enabled
- name: usrp_rate
id: variable
parameters:
comment: ''
value: '705600'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [181, 77]
rotation: 0
state: enabled
- name: audio_source_0
id: audio_source
parameters:
affinity: ''
alias: ''
comment: ''
device_name: hw:CARD=Device,DEV=0
maxoutbuf: '0'
minoutbuf: '0'
num_outputs: '1'
ok_to_block: 'True'
samp_rate: '44100'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [15, 231]
rotation: 0
state: true
- name: blocks_add_const_vxx_0
id: blocks_add_const_vxx
parameters:
affinity: ''
alias: ''
comment: ''
const: '1'
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [622, 269]
rotation: 0
state: true
- name: blocks_float_to_complex_0
id: blocks_float_to_complex
parameters:
affinity: ''
alias: ''
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [953, 269]
rotation: 0
state: true
- name: blocks_multiply_const_vxx_1
id: blocks_multiply_const_vxx
parameters:
affinity: ''
alias: ''
comment: ''
const: '1.2'
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [443, 271]
rotation: 0
state: enabled
- name: blocks_null_source_0
id: blocks_null_source
parameters:
affinity: ''
alias: ''
bus_structure_source: '[[0,],]'
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
num_outputs: '1'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [797, 330]
rotation: 0
state: true
- name: blocks_repeat_0
id: blocks_repeat
parameters:
affinity: ''
alias: ''
comment: ''
interp: '16'
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [264, 274]
rotation: 0
state: true
- name: blocks_repeat_1
id: blocks_repeat
parameters:
affinity: ''
alias: ''
comment: ''
interp: '16'
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [779, 271]
rotation: 0
state: true
- name: low_pass_filter_0
id: low_pass_filter
parameters:
affinity: ''
alias: ''
beta: '6.76'
comment: ''
cutoff_freq: ''
decim: '1'
gain: '1'
interp: '1'
maxoutbuf: '0'
minoutbuf: '0'
samp_rate: usrp_rate
type: fir_filter_ccf
width: 3k
win: firdes.WIN_HAMMING
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1132, 231]
rotation: 0
state: true
- name: note_0
id: note
parameters:
alias: ''
comment: ''
note: 48khz Carrier
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [430, 463]
rotation: 0
state: true
- name: qtgui_time_sink_x_0
id: qtgui_time_sink_x
parameters:
affinity: ''
alias: ''
alpha1: '1.0'
alpha10: '1.0'
alpha2: '1.0'
alpha3: '1.0'
alpha4: '1.0'
alpha5: '1.0'
alpha6: '1.0'
alpha7: '1.0'
alpha8: '1.0'
alpha9: '1.0'
autoscale: 'False'
axislabels: 'True'
color1: blue
color10: dark blue
color2: red
color3: green
color4: black
color5: cyan
color6: magenta
color7: yellow
color8: dark red
color9: dark green
comment: ''
ctrlpanel: 'False'
entags: 'True'
grid: 'False'
gui_hint: ''
label1: Signal 1
label10: Signal 10
label2: Signal 2
label3: Signal 3
label4: Signal 4
label5: Signal 5
label6: Signal 6
label7: Signal 7
label8: Signal 8
label9: Signal 9
legend: 'True'
marker1: '-1'
marker10: '-1'
marker2: '-1'
marker3: '-1'
marker4: '-1'
marker5: '-1'
marker6: '-1'
marker7: '-1'
marker8: '-1'
marker9: '-1'
name: '""'
nconnections: '1'
size: '4096'
srate: samp_rate
stemplot: 'False'
style1: '1'
style10: '1'
style2: '1'
style3: '1'
style4: '1'
style5: '1'
style6: '1'
style7: '1'
style8: '1'
style9: '1'
tr_chan: '0'
tr_delay: '0'
tr_level: '0.0'
tr_mode: qtgui.TRIG_MODE_FREE
tr_slope: qtgui.TRIG_SLOPE_POS
tr_tag: '""'
type: float
update_time: '0.10'
width1: '1'
width10: '1'
width2: '1'
width3: '1'
width4: '1'
width5: '1'
width6: '1'
width7: '1'
width8: '1'
width9: '1'
ylabel: Amplitude
ymax: '1'
ymin: '-1'
yunit: '""'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [642, 159]
rotation: 0
state: true
- name: uhd_usrp_sink_0
id: uhd_usrp_sink
parameters:
affinity: ''
alias: ''
ant0: TX/RX
ant1: TX/RX
ant10: TX/RX
ant11: TX/RX
ant12: TX/RX
ant13: TX/RX
ant14: TX/RX
ant15: TX/RX
ant16: TX/RX
ant17: TX/RX
ant18: TX/RX
ant19: TX/RX
ant2: TX/RX
ant20: TX/RX
ant21: TX/RX
ant22: TX/RX
ant23: TX/RX
ant24: TX/RX
ant25: TX/RX
ant26: TX/RX
ant27: TX/RX
ant28: TX/RX
ant29: TX/RX
ant3: TX/RX
ant30: TX/RX
ant31: TX/RX
ant4: TX/RX
ant5: TX/RX
ant6: TX/RX
ant7: TX/RX
ant8: TX/RX
ant9: TX/RX
bw0: 200k
bw1: '0'
bw10: '0'
bw11: '0'
bw12: '0'
bw13: '0'
bw14: '0'
bw15: '0'
bw16: '0'
bw17: '0'
bw18: '0'
bw19: '0'
bw2: '0'
bw20: '0'
bw21: '0'
bw22: '0'
bw23: '0'
bw24: '0'
bw25: '0'
bw26: '0'
bw27: '0'
bw28: '0'
bw29: '0'
bw3: '0'
bw30: '0'
bw31: '0'
bw4: '0'
bw5: '0'
bw6: '0'
bw7: '0'
bw8: '0'
bw9: '0'
center_freq0: freq
center_freq1: '0'
center_freq10: '0'
center_freq11: '0'
center_freq12: '0'
center_freq13: '0'
center_freq14: '0'
center_freq15: '0'
center_freq16: '0'
center_freq17: '0'
center_freq18: '0'
center_freq19: '0'
center_freq2: '0'
center_freq20: '0'
center_freq21: '0'
center_freq22: '0'
center_freq23: '0'
center_freq24: '0'
center_freq25: '0'
center_freq26: '0'
center_freq27: '0'
center_freq28: '0'
center_freq29: '0'
center_freq3: '0'
center_freq30: '0'
center_freq31: '0'
center_freq4: '0'
center_freq5: '0'
center_freq6: '0'
center_freq7: '0'
center_freq8: '0'
center_freq9: '0'
clock_rate: 0e0
clock_source0: ''
clock_source1: ''
clock_source2: ''
clock_source3: ''
clock_source4: ''
clock_source5: ''
clock_source6: ''
clock_source7: ''
comment: ''
dev_addr: '""'
dev_args: '""'
gain0: 500m
gain1: '0'
gain10: '0'
gain11: '0'
gain12: '0'
gain13: '0'
gain14: '0'
gain15: '0'
gain16: '0'
gain17: '0'
gain18: '0'
gain19: '0'
gain2: '0'
gain20: '0'
gain21: '0'
gain22: '0'
gain23: '0'
gain24: '0'
gain25: '0'
gain26: '0'
gain27: '0'
gain28: '0'
gain29: '0'
gain3: '0'
gain30: '0'
gain31: '0'
gain4: '0'
gain5: '0'
gain6: '0'
gain7: '0'
gain8: '0'
gain9: '0'
len_tag_name: ''
lo_export0: 'False'
lo_export1: 'False'
lo_export10: 'False'
lo_export11: 'False'
lo_export12: 'False'
lo_export13: 'False'
lo_export14: 'False'
lo_export15: 'False'
lo_export16: 'False'
lo_export17: 'False'
lo_export18: 'False'
lo_export19: 'False'
lo_export2: 'False'
lo_export20: 'False'
lo_export21: 'False'
lo_export22: 'False'
lo_export23: 'False'
lo_export24: 'False'
lo_export25: 'False'
lo_export26: 'False'
lo_export27: 'False'
lo_export28: 'False'
lo_export29: 'False'
lo_export3: 'False'
lo_export30: 'False'
lo_export31: 'False'
lo_export4: 'False'
lo_export5: 'False'
lo_export6: 'False'
lo_export7: 'False'
lo_export8: 'False'
lo_export9: 'False'
lo_source0: internal
lo_source1: internal
lo_source10: internal
lo_source11: internal
lo_source12: internal
lo_source13: internal
lo_source14: internal
lo_source15: internal
lo_source16: internal
lo_source17: internal
lo_source18: internal
lo_source19: internal
lo_source2: internal
lo_source20: internal
lo_source21: internal
lo_source22: internal
lo_source23: internal
lo_source24: internal
lo_source25: internal
lo_source26: internal
lo_source27: internal
lo_source28: internal
lo_source29: internal
lo_source3: internal
lo_source30: internal
lo_source31: internal
lo_source4: internal
lo_source5: internal
lo_source6: internal
lo_source7: internal
lo_source8: internal
lo_source9: internal
maxoutbuf: '0'
minoutbuf: '0'
nchan: '1'
norm_gain0: 'True'
norm_gain1: 'False'
norm_gain10: 'False'
norm_gain11: 'False'
norm_gain12: 'False'
norm_gain13: 'False'
norm_gain14: 'False'
norm_gain15: 'False'
norm_gain16: 'False'
norm_gain17: 'False'
norm_gain18: 'False'
norm_gain19: 'False'
norm_gain2: 'False'
norm_gain20: 'False'
norm_gain21: 'False'
norm_gain22: 'False'
norm_gain23: 'False'
norm_gain24: 'False'
norm_gain25: 'False'
norm_gain26: 'False'
norm_gain27: 'False'
norm_gain28: 'False'
norm_gain29: 'False'
norm_gain3: 'False'
norm_gain30: 'False'
norm_gain31: 'False'
norm_gain4: 'False'
norm_gain5: 'False'
norm_gain6: 'False'
norm_gain7: 'False'
norm_gain8: 'False'
norm_gain9: 'False'
num_mboards: '1'
otw: ''
samp_rate: usrp_rate
sd_spec0: ''
sd_spec1: ''
sd_spec2: ''
sd_spec3: ''
sd_spec4: ''
sd_spec5: ''
sd_spec6: ''
sd_spec7: ''
show_lo_controls: 'False'
stream_args: ''
stream_chans: '[]'
sync: sync
time_source0: ''
time_source1: ''
time_source2: ''
time_source3: ''
time_source4: ''
time_source5: ''
time_source6: ''
time_source7: ''
type: fc32
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1394, 215]
rotation: 0
state: true
connections:
- [audio_source_0, '0', blocks_repeat_0, '0']
- [blocks_add_const_vxx_0, '0', blocks_repeat_1, '0']
- [blocks_float_to_complex_0, '0', low_pass_filter_0, '0']
- [blocks_multiply_const_vxx_1, '0', blocks_add_const_vxx_0, '0']
- [blocks_multiply_const_vxx_1, '0', qtgui_time_sink_x_0, '0']
- [blocks_null_source_0, '0', blocks_float_to_complex_0, '1']
- [blocks_repeat_0, '0', blocks_multiply_const_vxx_1, '0']
- [blocks_repeat_1, '0', blocks_float_to_complex_0, '0']
- [low_pass_filter_0, '0', uhd_usrp_sink_0, '0']
metadata:
file_format: 1
