options:
  parameters:
    author: ''
    category: '[GRC Hier Blocks]'
    cmake_opt: ''
    comment: ''
    copyright: ''
    description: ''
    gen_cmake: 'On'
    gen_linking: dynamic
    generate_options: qt_gui
    hier_block_src_path: '.:'
    id: scope
    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: Arduino Voltmeter / Oscilloscope
    window_size: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [20, 20]
    rotation: 0
    state: enabled

blocks:
- name: sample_rate_hz
  id: variable
  parameters:
    comment: ''
    value: '1203.47'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [408, 37]
    rotation: 0
    state: enabled
- name: blocks_message_debug_0
  id: blocks_message_debug
  parameters:
    affinity: ''
    alias: ''
    comment: ''
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [1130, 378]
    rotation: 0
    state: true
- name: blocks_probe_rate_0
  id: blocks_probe_rate
  parameters:
    affinity: ''
    alias: ''
    alpha: '0.15'
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    mintime: '10000.0'
    type: byte
    vlen: '1'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [530, 342]
    rotation: 0
    state: true
- name: blocks_uchar_to_float_0
  id: blocks_uchar_to_float
  parameters:
    affinity: ''
    alias: ''
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [659, 234]
    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: 'False'
    marker1: '-1'
    marker10: '-1'
    marker2: '-1'
    marker3: '-1'
    marker4: '-1'
    marker5: '-1'
    marker6: '-1'
    marker7: '-1'
    marker8: '-1'
    marker9: '-1'
    name: '""'
    nconnections: '1'
    size: int(sample_rate_hz*2)
    srate: sample_rate_hz
    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: '2'
    width10: '1'
    width2: '1'
    width3: '1'
    width4: '1'
    width5: '1'
    width6: '1'
    width7: '1'
    width8: '1'
    width9: '1'
    ylabel: Signal
    ymax: '1'
    ymin: '0'
    yunit: '""'
  states:
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [959, 186]
    rotation: 0
    state: enabled
- name: serial_source_block
  id: epy_block
  parameters:
    _source_code: "import gnuradio\nimport numpy\nimport serial\n\n\nclass SerialSourceBlock(gnuradio.gr.sync_block):\n\
      \    def __init__(\n        self, port=\"/dev/ttyUSB0\", baud_rate=115200, buffer_max_length=10,\
      \ timeout=2\n    ):\n        gnuradio.gr.sync_block.__init__(\n            self,\
      \ name=\"Serial Source Block\", in_sig=None, out_sig=[numpy.uint8]\n       \
      \ )\n        self._serial_port = serial.Serial(\n            port=port, baudrate=baud_rate,\
      \ bytesize=serial.EIGHTBITS, timeout=timeout\n        )\n        self._buffer_max_length\
      \ = buffer_max_length\n\n    def work(self, input_items, output_items):\n  \
      \      # pylint: disable=unused-argument\n        buffer = self._serial_port.read(\n\
      \            min(len(output_items[0]), self._buffer_max_length)\n        )\n\
      \        output_items[0][: len(buffer)] = numpy.frombuffer(buffer, dtype=\"\
      u1\")\n        assert output_items[0][: len(buffer)].max() <= 1, \"invalid value\"\
      \n        return len(buffer)\n"
    affinity: ''
    alias: ''
    baud_rate: '115200'
    buffer_max_length: int(sample_rate_hz/4)
    comment: ''
    maxoutbuf: '0'
    minoutbuf: '0'
    port: '''/dev/ttyUSB0'''
    timeout: '2'
  states:
    _io_cache: ('Serial Source Block', 'SerialSourceBlock', [('port', "'/dev/ttyUSB0'"),
      ('baud_rate', '115200'), ('buffer_max_length', '10'), ('timeout', '2')], [],
      [('0', 'byte', 1)], '', [])
    bus_sink: false
    bus_source: false
    bus_structure: null
    coordinate: [28, 170]
    rotation: 0
    state: true

connections:
- [blocks_probe_rate_0, rate, blocks_message_debug_0, print]
- [blocks_uchar_to_float_0, '0', qtgui_time_sink_x_0, '0']
- [serial_source_block, '0', blocks_probe_rate_0, '0']
- [serial_source_block, '0', blocks_uchar_to_float_0, '0']

metadata:
  file_format: 1