sampleschema.xml

<ConfigSchema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:noNamespaceSchemaLocation="configschema.xsd">

  <!-- Enum values are declared separately from the knobs.
       The same Enum can be used as the 'enumtype' of any number of EnumKnobs -->
  <Enums>
    <Enum name="OPTION_MODE" help="Modes of the option">
      <Value name="FIRST" value="0" help="First mode" />
      <Value name="SECOND" value="1" help="Second mode" />
      <Value name="THIRD" value="2" help="Third mode" />
    </Enum>
  </Enums>

  <Structs>
    <Struct name="simple_t" help="Simple struct">
      <Member name="value" count="2" type="uint32_t" />
    </Struct>
    <Struct name="child_t" help="Embedded struct">
      <Member name="data" type="uint8_t" count="5" help="Bytes" />
      <Member name="mode" type="OPTION_MODE" />
    </Struct>
    <Struct name="sample_t" help="Sample struct">
      <Member name="counter" type="uint32_t" help="Number value" />
      <Member name="children" type="child_t" count="2" help="Child data" />
    </Struct>
  </Structs>

  <!-- namespace indicates the GUID namespace the values are stored in -->
  <Knobs namespace="{FE3ED49F-B173-41ED-9076-356661D46A42}">
    <!-- Example knobs of different types -->

    <Knob name="COMPLEX_KNOB1a" type="child_t" default="{{1,2,3, 4,5 },FIRST }" help="Complex knob" />
    
    <Knob name="COMPLEX_KNOB1b" type="child_t" default="{{1,2,3, 4,5 },SECOND }" help="Complex type" />

    <Knob name="COMPLEX_KNOB2" type="sample_t" default="{2,{{{1,2,3, 4,5 },FIRST },{{6,7,8, 9,10 },SECOND }}}" help="Complex type" />

    <Knob name="INTEGER_KNOB" type="uint32_t" default="100" help="Integer type" />
    <Knob name="BOOLEAN_KNOB" type="bool" default="true" help="Boolean type" />
    <Knob name="DOUBLE_KNOB" type="double" default="3.1415926" help="Double type" />
    <Knob name="FLOAT_KNOB" type="float" default="1.414" help="Float type" />

  </Knobs>

  <!-- Second knob namespace -->
  <Knobs namespace="{8CF777E5-0D01-479D-9255-19B1F07328D4}">
    <!-- Example knobs of different types -->

    <Knob name="COMPLEX_KNOB1b" type="child_t" default="{{3,3,3,3,3},FIRST}" help="Complex knob" />
    
    <Knob name="COMPLEX_KNOB3b" type="child_t" default="{{2,2,2,2,2},SECOND}" help="Complex type" />

    <Knob name="COMPLEX_KNOB4" type="sample_t" default="{1,{{{5,5,5,5,5},FIRST},{{6,7,7,7,7},SECOND}}}" help="Complex type" />

    <Knob name="INTEGER_KNOB2" type="uint32_t" default="89" help="Integer type" />
    <Knob name="BOOLEAN_KNOB2" type="bool" default="false" help="Boolean type" />
    <Knob name="DOUBLE_KNOB2" type="double" default="10.00281456" help="Double type" />
    <Knob name="FLOAT_KNOB2" type="float" default="4.56" help="Float type" />

  </Knobs>

</ConfigSchema>