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add decoder Threshold as a user-tunable parameter + loopback example

main
Jean-Michel Friedt 2023-03-07 12:11:02 +01:00
parent 44dd872d8c
commit bb64f0ae1c
7 changed files with 1185 additions and 13 deletions
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524
examples/NFM_simulation.grc 100644
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options:
parameters:
author: Barry Duggan
catch_exceptions: 'True'
category: '[GRC Hier Blocks]'
cmake_opt: ''
comment: ''
copyright: ''
description: NBFM transmitter
gen_cmake: 'On'
gen_linking: dynamic
generate_options: qt_gui
hier_block_src_path: '.:'
id: NFM_xmt
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: NFM_xmt
window_size: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [16, 32.0]
rotation: 0
state: enabled
blocks:
- name: df
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0'
step: '0.001'
stop: '0.02'
value: '0'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [168, 296.0]
rotation: 0
state: true
- name: freq
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0'
step: '1'
stop: samp_rate/2
value: '440'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [672, 64.0]
rotation: 0
state: true
- name: if_rate
id: variable
parameters:
comment: ''
value: int(usrp_rate/3)
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [376, 32.0]
rotation: 0
state: true
- name: noise
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0'
step: '0.01'
stop: '2'
value: '0.3'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [8, 296.0]
rotation: 0
state: true
- name: samp_rate
id: variable
parameters:
comment: ''
value: '48000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [200, 32.0]
rotation: 0
state: enabled
- name: usrp_rate
id: variable
parameters:
comment: ''
value: '576000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [288, 32.0]
rotation: 0
state: true
- name: analog_nbfm_rx_0
id: analog_nbfm_rx
parameters:
affinity: ''
alias: ''
audio_rate: '48000'
comment: ''
max_dev: 5e3
maxoutbuf: '0'
minoutbuf: '0'
quad_rate: if_rate
tau: 75e-6
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [696, 392.0]
rotation: 0
state: enabled
- name: analog_nbfm_tx_0
id: analog_nbfm_tx
parameters:
affinity: ''
alias: ''
audio_rate: samp_rate
comment: ''
fh: '-1.0'
max_dev: 5e3
maxoutbuf: '0'
minoutbuf: '0'
quad_rate: if_rate
tau: 75e-6
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [280, 160.0]
rotation: 0
state: true
- name: analog_sig_source_x_1
id: analog_sig_source_x
parameters:
affinity: ''
alias: ''
amp: '0.9'
comment: ''
freq: freq
maxoutbuf: '0'
minoutbuf: '0'
offset: '0'
phase: '0'
samp_rate: samp_rate
type: float
waveform: analog.GR_COS_WAVE
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [32, 152.0]
rotation: 0
state: true
- name: blocks_repeat_0_0
id: blocks_repeat
parameters:
affinity: ''
alias: ''
comment: ''
interp: (int)(usrp_rate/if_rate)
maxoutbuf: '0'
minoutbuf: '0'
type: complex
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [752, 192.0]
rotation: 0
state: true
- name: blocks_throttle_0
id: blocks_throttle
parameters:
affinity: ''
alias: ''
comment: ''
ignoretag: 'True'
maxoutbuf: '0'
minoutbuf: '0'
samples_per_second: usrp_rate
type: complex
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [160, 416.0]
rotation: 0
state: true
- name: channels_channel_model_0
id: channels_channel_model
parameters:
affinity: ''
alias: ''
block_tags: 'False'
comment: ''
epsilon: '1.0'
freq_offset: df
maxoutbuf: '0'
minoutbuf: '0'
noise_voltage: noise
seed: '0'
taps: 1.0 + 1.0j
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [320, 376.0]
rotation: 0
state: true
- name: low_pass_filter_0
id: low_pass_filter
parameters:
affinity: ''
alias: ''
beta: '6.76'
comment: ''
cutoff_freq: '5000'
decim: '1'
gain: '1'
interp: '1'
maxoutbuf: '0'
minoutbuf: '0'
samp_rate: if_rate
type: fir_filter_ccf
width: '2000'
win: window.WIN_HAMMING
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [552, 140.0]
rotation: 0
state: true
- name: low_pass_filter_1
id: low_pass_filter
parameters:
affinity: ''
alias: ''
beta: '6.76'
comment: ''
cutoff_freq: samp_rate/6
decim: int(usrp_rate/if_rate)
gain: '1'
interp: '1'
maxoutbuf: '0'
minoutbuf: '0'
samp_rate: usrp_rate
type: fir_filter_ccf
width: samp_rate/64
win: window.WIN_HAMMING
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [520, 364.0]
rotation: 0
state: true
- name: qtgui_freq_sink_x_0
id: qtgui_freq_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'
average: '1.0'
axislabels: 'True'
bw: if_rate
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'
fc: '0'
fftsize: '1024'
freqhalf: 'True'
grid: 'False'
gui_hint: ''
label: Relative Gain
label1: ''
label10: ''''''
label2: ''''''
label3: ''''''
label4: ''''''
label5: ''''''
label6: ''''''
label7: ''''''
label8: ''''''
label9: ''''''
legend: 'True'
maxoutbuf: '0'
minoutbuf: '0'
name: '""'
nconnections: '3'
norm_window: 'False'
showports: 'False'
tr_chan: '0'
tr_level: '0.0'
tr_mode: qtgui.TRIG_MODE_FREE
tr_tag: '""'
type: complex
units: dB
update_time: '0.10'
width1: '1'
width10: '1'
width2: '1'
width3: '1'
width4: '1'
width5: '1'
width6: '1'
width7: '1'
width8: '1'
width9: '1'
wintype: window.WIN_BLACKMAN_hARRIS
ymax: '10'
ymin: '-140'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [896, 272.0]
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: '2'
size: '1024'
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: [888, 384.0]
rotation: 0
state: true
- name: virtual_sink_0
id: virtual_sink
parameters:
alias: ''
comment: ''
stream_id: tag1
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [904, 192.0]
rotation: 0
state: true
- name: virtual_source_0
id: virtual_source
parameters:
alias: ''
comment: ''
stream_id: tag1
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [8, 416.0]
rotation: 0
state: true
connections:
- [analog_nbfm_rx_0, '0', qtgui_time_sink_x_0, '1']
- [analog_nbfm_tx_0, '0', low_pass_filter_0, '0']
- [analog_nbfm_tx_0, '0', qtgui_freq_sink_x_0, '1']
- [analog_sig_source_x_1, '0', analog_nbfm_tx_0, '0']
- [analog_sig_source_x_1, '0', qtgui_time_sink_x_0, '0']
- [blocks_repeat_0_0, '0', virtual_sink_0, '0']
- [blocks_throttle_0, '0', channels_channel_model_0, '0']
- [channels_channel_model_0, '0', low_pass_filter_1, '0']
- [low_pass_filter_0, '0', blocks_repeat_0_0, '0']
- [low_pass_filter_0, '0', qtgui_freq_sink_x_0, '0']
- [low_pass_filter_1, '0', analog_nbfm_rx_0, '0']
- [low_pass_filter_1, '0', qtgui_freq_sink_x_0, '2']
- [virtual_source_0, '0', blocks_throttle_0, '0']
metadata:
file_format: 1
grc_version: 3.10.5.1

630
examples/m17_loopback_noisychannel.grc 100644
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@ -0,0 +1,630 @@
options:
parameters:
author: sp5wwp
catch_exceptions: 'True'
category: '[GRC Hier Blocks]'
cmake_opt: ''
comment: ''
copyright: ''
description: ''
gen_cmake: 'On'
gen_linking: dynamic
generate_options: qt_gui
hier_block_src_path: '.:'
id: m17_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: Not titled yet
window_size: (1000,1000)
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [40, 8.0]
rotation: 0
state: enabled
blocks:
- name: N
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '-20'
step: '1'
stop: '20'
value: '8'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [432, 8.0]
rotation: 0
state: true
- name: can
id: variable
parameters:
comment: ''
value: '0'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [280, 8.0]
rotation: 0
state: true
- name: df
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0'
step: '.001'
stop: '.2'
value: '0'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [536, 8.0]
rotation: 0
state: true
- name: noise
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: ''
min_len: '200'
orient: QtCore.Qt.Horizontal
rangeType: float
start: '0'
step: '.01'
stop: '5'
value: '0'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [640, 8.0]
rotation: 0
state: true
- name: samp_rate
id: variable
parameters:
comment: ''
value: '48000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [344, 8.0]
rotation: 0
state: true
- name: threshold
id: variable_qtgui_entry
parameters:
comment: ''
gui_hint: ''
label: ''
type: real
value: '0.85'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [744, 8.0]
rotation: 0
state: true
- name: analog_agc_xx_0
id: analog_agc_xx
parameters:
affinity: ''
alias: ''
comment: ''
gain: '1.0'
max_gain: '65536'
maxoutbuf: '0'
minoutbuf: '0'
rate: 1e-2
reference: '2'
type: float
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [896, 320.0]
rotation: 0
state: true
- name: analog_frequency_modulator_fc_0
id: analog_frequency_modulator_fc
parameters:
affinity: ''
alias: ''
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
sensitivity: '8.18123e-2'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [752, 176.0]
rotation: 0
state: enabled
- name: analog_quadrature_demod_cf_0
id: analog_quadrature_demod_cf
parameters:
affinity: ''
alias: ''
comment: ''
gain: samp_rate/(2*math.pi*800.0)
maxoutbuf: '0'
minoutbuf: '0'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [520, 344.0]
rotation: 0
state: enabled
- name: blocks_delay_0
id: blocks_delay
parameters:
affinity: ''
alias: ''
comment: ''
delay: N
maxoutbuf: '0'
minoutbuf: '0'
num_ports: '1'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [912, 232.0]
rotation: 0
state: true
- name: blocks_throttle_0
id: blocks_throttle
parameters:
affinity: ''
alias: ''
comment: ''
ignoretag: 'True'
maxoutbuf: '0'
minoutbuf: '0'
samples_per_second: '4800'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [376, 176.0]
rotation: 0
state: enabled
- name: blocks_vector_source_x_0
id: blocks_vector_source_x
parameters:
affinity: ''
alias: ''
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
repeat: 'True'
tags: '[]'
type: byte
vector: (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [16, 160.0]
rotation: 0
state: enabled
- name: channels_channel_model_0
id: channels_channel_model
parameters:
affinity: ''
alias: ''
block_tags: 'False'
comment: ''
epsilon: '1.0'
freq_offset: df
maxoutbuf: '0'
minoutbuf: '0'
noise_voltage: noise
seed: '0'
taps: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [320, 304.0]
rotation: 0
state: bypassed
- name: iio_pluto_sink_0
id: iio_pluto_sink
parameters:
affinity: ''
alias: ''
attenuation1: '10.0'
bandwidth: '20000000'
buffer_size: '32768'
comment: ''
cyclic: 'False'
filter: ''
filter_source: '''Auto'''
fpass: '0'
frequency: '435000000'
fstop: '0'
len_tag_key: ''
samplerate: samp_rate*16
type: fc32
uri: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1016, 60.0]
rotation: 0
state: disabled
- name: iio_pluto_source_0
id: iio_pluto_source
parameters:
affinity: ''
alias: ''
bandwidth: '20000000'
bbdc: 'True'
buffer_size: '32768'
comment: ''
filter: ''
filter_source: '''Auto'''
fpass: '0'
frequency: 2400000000-40000
fstop: '0'
gain1: '''slow_attack'''
len_tag_key: packet_len
manual_gain1: '64'
maxoutbuf: '0'
minoutbuf: '0'
quadrature: 'True'
rfdc: 'True'
samplerate: samp_rate*16
type: fc32
uri: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [8, 340.0]
rotation: 0
state: disabled
- name: import_0
id: import
parameters:
alias: ''
comment: ''
imports: import math
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [192, 8.0]
rotation: 0
state: true
- name: m17_m17_coder_0
id: m17_m17_coder
parameters:
affinity: ''
alias: ''
comment: ''
debug: 'False'
dst_id: ALL
maxoutbuf: '0'
meta: helloworld
minoutbuf: '0'
src_id: AB1CDE
type: (can<<7)|(2<<1)|1
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [208, 144.0]
rotation: 0
state: enabled
- name: m17_m17_decoder_0
id: m17_m17_decoder
parameters:
affinity: ''
alias: ''
comment: ''
debug_ctrl: 'True'
debug_data: 'False'
maxoutbuf: '0'
minoutbuf: '0'
threshold: threshold
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1096, 328.0]
rotation: 0
state: enabled
- name: qtgui_number_sink_0
id: qtgui_number_sink
parameters:
affinity: ''
alias: ''
autoscale: 'False'
avg: '0'
color1: ("black", "black")
color10: ("black", "black")
color2: ("black", "black")
color3: ("black", "black")
color4: ("black", "black")
color5: ("black", "black")
color6: ("black", "black")
color7: ("black", "black")
color8: ("black", "black")
color9: ("black", "black")
comment: ''
factor1: '1'
factor10: '1'
factor2: '1'
factor3: '1'
factor4: '1'
factor5: '1'
factor6: '1'
factor7: '1'
factor8: '1'
factor9: '1'
graph_type: qtgui.NUM_GRAPH_HORIZ
gui_hint: ''
label1: ''
label10: ''
label2: ''
label3: ''
label4: ''
label5: ''
label6: ''
label7: ''
label8: ''
label9: ''
max: '1'
min: '-1'
name: '""'
nconnections: '1'
type: byte
unit1: ''
unit10: ''
unit2: ''
unit3: ''
unit4: ''
unit5: ''
unit6: ''
unit7: ''
unit8: ''
unit9: ''
update_time: '0.10'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1264, 320.0]
rotation: 0
state: true
- name: qtgui_time_sink_x_0_0_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: '2'
size: '100'
srate: samp_rate/10
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: '5'
ymin: '-5'
yunit: '""'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [1096, 240.0]
rotation: 0
state: enabled
- name: root_raised_cosine_filter_0
id: root_raised_cosine_filter
parameters:
affinity: ''
alias: ''
alpha: '0.5'
comment: ''
decim: '1'
gain: '10'
interp: '10'
maxoutbuf: '0'
minoutbuf: '0'
ntaps: '81'
samp_rate: '10'
sym_rate: '1.0'
type: interp_fir_filter_fff
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [536, 136.0]
rotation: 0
state: enabled
- name: root_raised_cosine_filter_0_0
id: root_raised_cosine_filter
parameters:
affinity: ''
alias: ''
alpha: '0.5'
comment: ''
decim: '10'
gain: '10'
interp: '1'
maxoutbuf: '0'
minoutbuf: '0'
ntaps: '81'
samp_rate: '10'
sym_rate: '1.0'
type: fir_filter_fff
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [696, 304.0]
rotation: 0
state: enabled
- name: virtual_sink_0
id: virtual_sink
parameters:
alias: ''
comment: ''
stream_id: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [928, 176.0]
rotation: 0
state: enabled
- name: virtual_source_0
id: virtual_source
parameters:
alias: ''
comment: ''
stream_id: ''
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [176, 344.0]
rotation: 0
state: enabled
connections:
- [analog_agc_xx_0, '0', m17_m17_decoder_0, '0']
- [analog_agc_xx_0, '0', qtgui_time_sink_x_0_0_0, '1']
- [analog_frequency_modulator_fc_0, '0', iio_pluto_sink_0, '0']
- [analog_frequency_modulator_fc_0, '0', virtual_sink_0, '0']
- [analog_quadrature_demod_cf_0, '0', root_raised_cosine_filter_0_0, '0']
- [blocks_delay_0, '0', qtgui_time_sink_x_0_0_0, '0']
- [blocks_throttle_0, '0', blocks_delay_0, '0']
- [blocks_throttle_0, '0', root_raised_cosine_filter_0, '0']
- [blocks_vector_source_x_0, '0', m17_m17_coder_0, '0']
- [channels_channel_model_0, '0', analog_quadrature_demod_cf_0, '0']
- [iio_pluto_source_0, '0', analog_quadrature_demod_cf_0, '0']
- [m17_m17_coder_0, '0', blocks_throttle_0, '0']
- [m17_m17_decoder_0, '0', qtgui_number_sink_0, '0']
- [root_raised_cosine_filter_0, '0', analog_frequency_modulator_fc_0, '0']
- [root_raised_cosine_filter_0_0, '0', analog_agc_xx_0, '0']
- [virtual_source_0, '0', channels_channel_model_0, '0']
metadata:
file_format: 1
grc_version: 3.10.5.1

7
grc/m17_m17_decoder.block.yml
View File

@ -13,13 +13,18 @@ parameters:
dtype: bool
default: 'False'
options: ['True', 'False']
- id: threshold
label: Threshold
dtype: float
default: 0.9
templates:
imports: from gnuradio import m17
make: m17.m17_decoder(${debug_data},${debug_ctrl})
make: m17.m17_decoder(${debug_data},${debug_ctrl},${threshold})
callbacks:
- set_debug_data(${debug_data})
- set_debug_ctrl(${debug_ctrl})
- set_threshold(${threshold})
# Make one 'inputs' list entry per input and one 'outputs' list entry per output.
# Keys include:

3
include/gnuradio/m17/m17_decoder.h
View File

@ -32,9 +32,10 @@ public:
* class. m17::m17_decoder::make is the public interface for
* creating new instances.
*/
static sptr make(bool debug_data,bool debug_ctrl);
static sptr make(bool debug_data,bool debug_ctrl,float threshold);
virtual void set_debug_data(bool debug)=0;
virtual void set_debug_ctrl(bool debug)=0;
virtual void set_threshold(float threshold)=0;
};
} // namespace m17

23
lib/m17_decoder_impl.cc
View File

@ -40,7 +40,7 @@
//#define SHOW_VITERBI_ERRS
//
#define XCORR_THRESHOLD 0.90 // arbitrary threshold between 0 and 1: might be tunable from GNU Radio Block for flexibility
//#define XCORR_THRESHOLD 0.90 // arbitrary threshold between 0 and 1: might be tunable from GNU Radio Block for flexibility
#define CODE_MEAN -0.75 // mean(str_sync)
#define CODE_STD 8.78 // std(str_sync)*sqrt(length(str_sync))
// see ../M17_Implementations/SP5WWP/inc/m17.h for const int8_t str_sync[8]={-3, -3, -3, -3, +3, +3, -3, +3};
@ -108,23 +108,25 @@ void decode_callsign(uint8_t *outp, const uint8_t *inp)
}
m17_decoder::sptr
m17_decoder::make(bool debug_data,bool debug_ctrl)
m17_decoder::make(bool debug_data,bool debug_ctrl,float threshold)
{
return gnuradio::get_initial_sptr
(new m17_decoder_impl(debug_data,debug_ctrl));
(new m17_decoder_impl(debug_data,debug_ctrl,threshold));
}
/*
* The private constructor
*/
m17_decoder_impl::m17_decoder_impl(bool debug_data,bool debug_ctrl)
m17_decoder_impl::m17_decoder_impl(bool debug_data,bool debug_ctrl,float threshold)
: gr::block("m17_decoder",
gr::io_signature::make(1, 1, sizeof(float)),
gr::io_signature::make(1, 1, sizeof(char))),
_debug_data(debug_data), _debug_ctrl(debug_ctrl)
_debug_data(debug_data), _debug_ctrl(debug_ctrl), _threshold(threshold)
{set_debug_data(debug_data);
set_debug_ctrl(debug_ctrl);}
set_debug_ctrl(debug_ctrl);
set_threshold(threshold);
}
/*
* Our virtual destructor.
@ -133,6 +135,11 @@ void decode_callsign(uint8_t *outp, const uint8_t *inp)
{
}
void m17_decoder_impl::set_threshold(float threshold)
{_threshold=threshold;
printf("Threshold: %f\n",_threshold);
}
void m17_decoder_impl::set_debug_data(bool debug)
{_debug_data=debug;
if (_debug_data==true) printf("Data debug: true\n"); else printf("Data debug: false\n");
@ -210,13 +217,13 @@ uint8_t pushed; //counter for pushed symbols
xcorr/=(sqrt(normx)*CODE_STD); // 8.78=std(str_sync)*sqrt(length(str_sync))
// printf("%f\n", xcorr);
if(xcorr>XCORR_THRESHOLD) //Frame syncword detected
if(xcorr>_threshold) // XCORR_THRESHOLD) //Frame syncword detected
{
syncd=1;
pushed=0;
fl=0;
}
else if(xcorr<-XCORR_THRESHOLD) //LSF syncword
else if(xcorr<-_threshold) // XCORR_THRESHOLD) //LSF syncword
{
syncd=1;
pushed=0;

4
lib/m17_decoder_impl.h
View File

@ -18,12 +18,14 @@ class m17_decoder_impl : public m17_decoder
private:
bool _debug_data=false;
bool _debug_ctrl=false;
float _threshold=0.9;
public:
m17_decoder_impl(bool debug_data,bool debug_ctrl);
m17_decoder_impl(bool debug_data,bool debug_ctrl,float threshold);
~m17_decoder_impl();
void set_debug_data(bool debug);
void set_debug_ctrl(bool debug);
void set_threshold(float threshold);
// Where all the action really happens
void forecast(int noutput_items, gr_vector_int& ninput_items_required);

7
python/m17/bindings/m17_decoder_python.cc
View File

@ -16,7 +16,7 @@
/* BINDTOOL_GEN_AUTOMATIC(0) */
/* BINDTOOL_USE_PYGCCXML(0) */
/* BINDTOOL_HEADER_FILE(m17_decoder.h) */
/* BINDTOOL_HEADER_FILE_HASH(6d1584568dd4bd471f76c6e03b799efb) */
/* BINDTOOL_HEADER_FILE_HASH(74e8e77389b1889023dbed48ecb9523e) */
/***********************************************************************************/
#include <pybind11/complex.h>
@ -37,7 +37,7 @@ void bind_m17_decoder(py::module &m) {
std::shared_ptr<m17_decoder>>(m, "m17_decoder", D(m17_decoder))
.def(py::init(&m17_decoder::make), py::arg("debug_data"),
py::arg("debug_ctrl"), D(m17_decoder, make))
py::arg("debug_ctrl"), py::arg("threshold"), D(m17_decoder, make))
.def("set_debug_data", &m17_decoder::set_debug_data, py::arg("debug"),
D(m17_decoder, set_debug_data))
@ -45,5 +45,8 @@ void bind_m17_decoder(py::module &m) {
.def("set_debug_ctrl", &m17_decoder::set_debug_ctrl, py::arg("debug"),
D(m17_decoder, set_debug_ctrl))
.def("set_threshold", &m17_decoder::set_threshold, py::arg("threshold"),
D(m17_decoder, set_threshold))
;
}