_gnuradio-world-challenges/challenge_0.grc
options:
parameters:
author: Marc
comment: ''
copyright: ''
description: ''
generate_options: qt_gui
id: Challenge_0
title: Challenge 0
states:
coordinate: [10, 10]
rotation: 0
state: enabled
blocks:
- name: samp_rate
id: variable
parameters:
comment: ''
value: '32000'
states:
coordinate: [590, 10]
rotation: 0
state: enabled
- name: analog_sig_source_x_0
id: analog_sig_source_x
parameters:
affinity: ''
alias: ''
amp: '1'
comment: Creates a tone
freq: '70'
maxoutbuf: '0'
minoutbuf: '0'
offset: '0'
phase: '0'
samp_rate: samp_rate
type: float
waveform: analog.GR_COS_WAVE
states:
coordinate: [10, 330]
rotation: 0
state: enabled
- name: blocks_throttle2_0
id: blocks_throttle2
parameters:
affinity: ''
alias: ''
comment: "Limits the rate of IQ samples\nflowing through"
ignoretag: 'True'
limit: auto
maximum: '0.1'
maxoutbuf: '0'
minoutbuf: '0'
samples_per_second: samp_rate
type: float
vlen: '1'
states:
coordinate: [360, 350]
rotation: 0
state: enabled
- name: challenge_0
id: wasm_challenge
parameters:
affinity: ''
alias: ''
challenge_id: challenge_0
comment: ''
criteria: "[\n {\"kind\": \"ran\", \"seconds\": 2, \"goal\": \"Run the flowgraph and watch the scope\"},\n {\"kind\": \"param\", \"block\": \"analog_sig_source_x_0\", \"param\": \"freq\", \"equals\": 200, \"goal\": \"Set the Signal Source frequency to 200 Hz\"}\n]"
requires: ''
title: Change the tone
states:
coordinate: [760, 10]
rotation: 0
state: enabled
- name: note_0
id: note
parameters:
affinity: ''
alias: ''
bgcolor: '#4dff6a'
comment: ''
note: In this starter flowgraph, real-valued samples are generated by the Signal Source, it creates a tone at 70 Hz.
states:
coordinate: [1170, 10]
rotation: 0
state: enabled
- name: note_0_0
id: note
parameters:
affinity: ''
alias: ''
bgcolor: '#4dff6a'
comment: ''
note: Because there is no hardware/SDR/audio blocks, the Signal Source would generate samples as fast as it can (it doesn't limit itself to samp_rate), so we add a Throttle block to limit the flow of samples.
states:
coordinate: [10, 170]
rotation: 0
state: enabled
- name: note_0_1
id: note
parameters:
affinity: ''
alias: ''
bgcolor: '#4dff6a'
comment: ''
note: "Challenge:\n1) Run the flowgraph using the play button at the top, observe what happens, then stop it with the stop button\n2) Change the frequency of the tone to 200 Hz"
states:
coordinate: [440, 170]
rotation: 0
state: enabled
- name: qtgui_time_sink_x_0
id: qtgui_time_sink_x
parameters:
affinity: ''
alias: ''
alpha1: '1'
alpha10: '1'
alpha2: '1'
alpha3: '1'
alpha4: '1'
alpha5: '1'
alpha6: '1'
alpha7: '1'
alpha8: '1'
alpha9: '1'
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: Displays the time domain
ctrlpanel: 'False'
entags: 'True'
grid: 'False'
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: Scope
nconnections: '1'
size: '2000'
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'
tr_mode: qtgui.TRIG_MODE_FREE
tr_slope: qtgui.TRIG_SLOPE_POS
tr_tag: ''
type: float
update_time: '0.1'
width1: '1'
width10: '1'
width2: '1'
width3: '1'
width4: '1'
width5: '1'
width6: '1'
width7: '1'
width8: '1'
width9: '1'
ylabel: Amplitude
ymax: '1.5'
ymin: '-1.5'
yunit: ''
states:
coordinate: [690, 350]
rotation: 0
state: enabled
- name: wasm_gui_layout_0
id: wasm_gui_layout
parameters:
affinity: ''
alias: ''
columns: '12'
comment: ''
layout: '{}'
row_height: '60'
states:
coordinate: [300, 10]
rotation: 0
state: enabled
connections:
- [analog_sig_source_x_0, '0', blocks_throttle2_0, '0']
- [blocks_throttle2_0, '0', qtgui_time_sink_x_0, '0']
metadata:
file_format: 1
grc_version: 3.11.0.0
