Scoreboard_TX.grc

options:
  parameters:
    author: 'Jesse Victors, Maxwell Dulin, assistance from Derek Kozel '
    catch_exceptions: 'True'
    category: '[GRC Hier Blocks]'
    cmake_opt: ''
    comment: ''
    copyright: ''
    description: Please see the series in https://blog.securityinnovation.com/cracking-a-sports-scoreboard-part-1
      and https://maxwelldulin.com/BlogPost?post=8579892224
    gen_cmake: 'On'
    gen_linking: dynamic
    generate_options: no_gui
    hier_block_src_path: '.:'
    id: Scoreboard_TX
    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: Scoreboard TX
    window_size: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [8, 8]
    rotation: 0
    state: enabled

blocks:
- name: FSK_offset_hz
  id: variable
  parameters:
    comment: ''
    value: 1000 * 1e3
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [488, 104.0]
    rotation: 0
    state: enabled
- name: bits_per_second
  id: variable
  parameters:
    comment: baud rate for 2FSK
    value: '12345'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [376, 104.0]
    rotation: 0
    state: enabled
- name: center_freq_MHz
  id: variable
  parameters:
    comment: ''
    value: '922'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [256, 104.0]
    rotation: 0
    state: enabled
- name: digital_sequence
  id: variable
  parameters:
    comment: ''
    value: (1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
      1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1,
      0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0,
      0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
      1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1,
      0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0,
      1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1,
      0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1,
      1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0,
      1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0,
      1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1,
      1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1,
      0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0,
      1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
      1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
      1, 0, 1, 0, 1, 0, 1)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [24, 152.0]
    rotation: 0
    state: true
- name: offset_freq
  id: variable
  parameters:
    comment: Transmission offset
    value: '-FSK_offset_hz / 2 '
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [800, 136.0]
    rotation: 0
    state: enabled
- name: sample_rate
  id: variable
  parameters:
    comment: 'Transmission

      sampling rate'
    value: FSK_offset_hz * sample_rate_coefficient
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [704, 136.0]
    rotation: 0
    state: enabled
- name: sample_rate_coefficient
  id: variable
  parameters:
    comment: ''
    value: '5'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [704, 64.0]
    rotation: 0
    state: enabled
- name: blocks_repeat_0
  id: blocks_repeat
  parameters:
    affinity: ''
    alias: ''
    comment: 'Repeat each bit to

      match the expected

      bit rate within the

      sampling rate.'
    interp: int(sample_rate / bits_per_second)
    maxoutbuf: '0'
    minoutbuf: '0'
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [216, 320.0]
    rotation: 0
    state: enabled
- name: blocks_rotator_cc_0
  id: blocks_rotator_cc
  parameters:
    affinity: ''
    alias: ''
    comment: "Rotate the samples counter-clockwise\naround the complex unit circle,\
      \ thus\ncreating a negative frequency and \nthus shifting the frequency.\n\n\
      This way the wave is shifted 500 kHz\n(offset_freq) allowing us to avoid \n\
      the hardware noise from the HackRF\nOne interfering in our signal."
    maxoutbuf: '0'
    minoutbuf: '0'
    phase_inc: (math.pi * 2 * offset_freq) / sample_rate
    tag_inc_update: 'False'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [944, 328.0]
    rotation: 0
    state: true
- name: blocks_throttle_0
  id: blocks_throttle
  parameters:
    affinity: ''
    alias: ''
    comment: 'Throttle stream to

      the final sampling rate.'
    ignoretag: 'True'
    maxoutbuf: '0'
    minoutbuf: '0'
    samples_per_second: sample_rate
    type: float
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [384, 320.0]
    rotation: 0
    state: enabled
- name: blocks_vco_c_0
  id: blocks_vco_c
  parameters:
    affinity: ''
    alias: ''
    amplitude: '1'
    comment: 'Voltage Controlled Oscillator.

      A larger value in the input

      creates a higher frequency.

      Delivering 1s and 0s thus

      creates frequency shift keying.


      The wave is represented as

      complex numbers, so the output

      port is blue now.'
    maxoutbuf: '0'
    minoutbuf: '0'
    samp_rate: sample_rate
    sensitivity: (2 * math.pi * FSK_offset_hz)
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [552, 304.0]
    rotation: 0
    state: enabled
- name: blocks_vector_source_x_0
  id: blocks_vector_source_x
  parameters:
    affinity: ''
    alias: ''
    comment: 'Binary to transmit.


      Note the orange output block;

      these values are floats.'
    maxoutbuf: '0'
    minoutbuf: '0'
    repeat: 'False'
    tags: '[]'
    type: float
    vector: digital_sequence
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [16, 304.0]
    rotation: 0
    state: enabled
- name: import_0
  id: import
  parameters:
    alias: ''
    comment: ''
    imports: import math
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1040, 112.0]
    rotation: 0
    state: enabled
- name: low_pass_filter_0
  id: low_pass_filter
  parameters:
    affinity: ''
    alias: ''
    beta: '6.76'
    comment: 'Low-pass filter removes

      high-frequency noise

      from the VCO block.'
    cutoff_freq: FSK_offset_hz * 1.1
    decim: '1'
    gain: '1'
    interp: '1'
    maxoutbuf: '0'
    minoutbuf: '0'
    samp_rate: sample_rate
    type: fir_filter_ccf
    width: '10000'
    win: window.WIN_HAMMING
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [744, 268.0]
    rotation: 0
    state: enabled
- name: osmosdr_sink_0
  id: osmosdr_sink
  parameters:
    affinity: ''
    alias: ''
    ant0: ''
    ant1: ''
    ant10: ''
    ant11: ''
    ant12: ''
    ant13: ''
    ant14: ''
    ant15: ''
    ant16: ''
    ant17: ''
    ant18: ''
    ant19: ''
    ant2: ''
    ant20: ''
    ant21: ''
    ant22: ''
    ant23: ''
    ant24: ''
    ant25: ''
    ant26: ''
    ant27: ''
    ant28: ''
    ant29: ''
    ant3: ''
    ant30: ''
    ant31: ''
    ant4: ''
    ant5: ''
    ant6: ''
    ant7: ''
    ant8: ''
    ant9: ''
    args: '""'
    bb_gain0: '0'
    bb_gain1: '20'
    bb_gain10: '20'
    bb_gain11: '20'
    bb_gain12: '20'
    bb_gain13: '20'
    bb_gain14: '20'
    bb_gain15: '20'
    bb_gain16: '20'
    bb_gain17: '20'
    bb_gain18: '20'
    bb_gain19: '20'
    bb_gain2: '20'
    bb_gain20: '20'
    bb_gain21: '20'
    bb_gain22: '20'
    bb_gain23: '20'
    bb_gain24: '20'
    bb_gain25: '20'
    bb_gain26: '20'
    bb_gain27: '20'
    bb_gain28: '20'
    bb_gain29: '20'
    bb_gain3: '20'
    bb_gain30: '20'
    bb_gain31: '20'
    bb_gain4: '20'
    bb_gain5: '20'
    bb_gain6: '20'
    bb_gain7: '20'
    bb_gain8: '20'
    bb_gain9: '20'
    bw0: '0'
    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'
    clock_source0: ''
    clock_source1: ''
    clock_source2: ''
    clock_source3: ''
    clock_source4: ''
    clock_source5: ''
    clock_source6: ''
    clock_source7: ''
    comment: 'Transmit into HackRF One.

      Frequency set to center_freq_MHz'
    corr0: '0'
    corr1: '0'
    corr10: '0'
    corr11: '0'
    corr12: '0'
    corr13: '0'
    corr14: '0'
    corr15: '0'
    corr16: '0'
    corr17: '0'
    corr18: '0'
    corr19: '0'
    corr2: '0'
    corr20: '0'
    corr21: '0'
    corr22: '0'
    corr23: '0'
    corr24: '0'
    corr25: '0'
    corr26: '0'
    corr27: '0'
    corr28: '0'
    corr29: '0'
    corr3: '0'
    corr30: '0'
    corr31: '0'
    corr4: '0'
    corr5: '0'
    corr6: '0'
    corr7: '0'
    corr8: '0'
    corr9: '0'
    freq0: center_freq_MHz * 1e6
    freq1: 100e6
    freq10: 100e6
    freq11: 100e6
    freq12: 100e6
    freq13: 100e6
    freq14: 100e6
    freq15: 100e6
    freq16: 100e6
    freq17: 100e6
    freq18: 100e6
    freq19: 100e6
    freq2: 100e6
    freq20: 100e6
    freq21: 100e6
    freq22: 100e6
    freq23: 100e6
    freq24: 100e6
    freq25: 100e6
    freq26: 100e6
    freq27: 100e6
    freq28: 100e6
    freq29: 100e6
    freq3: 100e6
    freq30: 100e6
    freq31: 100e6
    freq4: 100e6
    freq5: 100e6
    freq6: 100e6
    freq7: 100e6
    freq8: 100e6
    freq9: 100e6
    gain0: '14'
    gain1: '10'
    gain10: '10'
    gain11: '10'
    gain12: '10'
    gain13: '10'
    gain14: '10'
    gain15: '10'
    gain16: '10'
    gain17: '10'
    gain18: '10'
    gain19: '10'
    gain2: '10'
    gain20: '10'
    gain21: '10'
    gain22: '10'
    gain23: '10'
    gain24: '10'
    gain25: '10'
    gain26: '10'
    gain27: '10'
    gain28: '10'
    gain29: '10'
    gain3: '10'
    gain30: '10'
    gain31: '10'
    gain4: '10'
    gain5: '10'
    gain6: '10'
    gain7: '10'
    gain8: '10'
    gain9: '10'
    if_gain0: '47'
    if_gain1: '20'
    if_gain10: '20'
    if_gain11: '20'
    if_gain12: '20'
    if_gain13: '20'
    if_gain14: '20'
    if_gain15: '20'
    if_gain16: '20'
    if_gain17: '20'
    if_gain18: '20'
    if_gain19: '20'
    if_gain2: '20'
    if_gain20: '20'
    if_gain21: '20'
    if_gain22: '20'
    if_gain23: '20'
    if_gain24: '20'
    if_gain25: '20'
    if_gain26: '20'
    if_gain27: '20'
    if_gain28: '20'
    if_gain29: '20'
    if_gain3: '20'
    if_gain30: '20'
    if_gain31: '20'
    if_gain4: '20'
    if_gain5: '20'
    if_gain6: '20'
    if_gain7: '20'
    if_gain8: '20'
    if_gain9: '20'
    maxoutbuf: '0'
    minoutbuf: '0'
    nchan: '1'
    num_mboards: '1'
    sample_rate: sample_rate
    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: [1216, 260.0]
    rotation: 0
    state: enabled

connections:
- [blocks_repeat_0, '0', blocks_throttle_0, '0']
- [blocks_rotator_cc_0, '0', osmosdr_sink_0, '0']
- [blocks_throttle_0, '0', blocks_vco_c_0, '0']
- [blocks_vco_c_0, '0', low_pass_filter_0, '0']
- [blocks_vector_source_x_0, '0', blocks_repeat_0, '0']
- [low_pass_filter_0, '0', blocks_rotator_cc_0, '0']

metadata:
  file_format: 1
  grc_version: 3.9.8.0-rc1