org.bluetooth.characteristic.cycling_power_vector.xml

<?xml version="1.0" encoding="utf-8"?>
<!--Copyright 2011 Bluetooth SIG, Inc. All rights reserved.-->
<Characteristic xsi:noNamespaceSchemaLocation="http://schemas.bluetooth.org/Documents/characteristic.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
name="Cycling Power Vector"
type="org.bluetooth.characteristic.cycling_power_vector"
uuid="2A64" last-modified="2014-07-02" approved="Yes">
  <InformativeText>
    <Summary>The Cycling Power Vector characteristic is a variable
    length structure containing a Flags fieldand based on the
    contents of the Flags field, may contain one or more additional
    fields as shown in the table below.</Summary>
  </InformativeText>
  <Value>
    <Field name="Flags">
      <Requirement>Mandatory</Requirement>
      <Format>8bit</Format>
      <BitField>
        <Bit index="0" size="1"
        name="Crank Revolution Data Present">
          <Enumerations>
            <Enumeration key="0" value="False" />
            <Enumeration key="1" value="True" />
          </Enumerations>
        </Bit>
        <Bit index="1" size="1"
        name="First Crank Measurement Angle Present">
          <Enumerations>
            <Enumeration key="0" value="False" />
            <Enumeration key="1" value="True" />
          </Enumerations>
        </Bit>
        <Bit index="2" size="1"
        name="Instantaneous Force Magnitude Array Present">
          <Enumerations>
            <Enumeration key="0" value="False" />
            <Enumeration key="1" value="True" />
          </Enumerations>
        </Bit>
        <Bit index="3" size="1"
        name="Instantaneous Torque Magnitude Array Present">
          <Enumerations>
            <Enumeration key="0" value="False" />
            <Enumeration key="1" value="True" />
          </Enumerations>
        </Bit>
        <Bit index="4" size="2"
        name="Instantaneous Measurement Direction">
          <Enumerations>
            <Enumeration key="0" value="Unknown" />
            <Enumeration key="1" value="Tangential Component" />
            <Enumeration key="2" value="Radial Component" />
            <Enumeration key="3" value="Lateral Component" />
          </Enumerations>
        </Bit>
        <ReservedForFutureUse index="6" size="2" />
      </BitField>
      <br>C1:These Fields are dependent upon the Flags field</br>
      <p></p>
    </Field>
    <Field name="Crank Revolution Data - Cumulative Crank Revolutions">

      <InformativeText>Unitless 
      <br>C1:When present, these fields are always present as a
      pair.</br></InformativeText>
      <Requirement>C1</Requirement>
      <Format>uint16</Format>
      <Unit>org.bluetooth.unit.unitless</Unit>
      <DecimalExponent>0</DecimalExponent>
    </Field>
    <Field name="Crank Revolution Data - Last Crank Event Time">
      <InformativeText>Unit is in seconds with a resolution of
      1/1024. 
      <br>C1:When present, these fields are always present as a
      pair.</br></InformativeText>
      <Requirement>C1</Requirement>
      <Format>uint16</Format>
      <Unit>org.bluetooth.unit.time.second</Unit>
      <BinaryExponent>-10</BinaryExponent>
    </Field>
    <Field name="First Crank Measurement Angle">
      <InformativeText>Unit is in degrees with a resolution of
      1.</InformativeText>
      <Requirement>Optional</Requirement>
      <Format>uint16</Format>
      <Unit>org.bluetooth.unit.plane_angle.degree</Unit>
      <!-- 2014-07-02 - Added the Description tag to show the informational text per request from SF WG -->
      <Description>When observed with the front wheel to the right
      of the pedals, a value of 0 degrees represents the angle when
      the crank is in the 12 o'clock position and a value of 90
      degrees represents the angle, measured clockwise, when the
      crank points towards the front wheel in a 3 o'clock position.
      The left crank sensor (if fitted) detects the 0? when the
      crank it is attached to is in the 12 o'clock position and the
      right sensor (if fitted) detects the 0? when the crank it is
      attached to is in its 12 o'clock position; thus, there is a
      constant 180? difference between the right crank and the left
      crank position signals.</Description>
      <DecimalExponent>0</DecimalExponent>
    </Field>
    <Field name="Instantaneous Force Magnitude Array">
      <InformativeText>The unit is in newtons with a resolution of
      1 
      <br>Array Order - Older is towards the LSO and Newer is
      towards the MSO</br>
      <br>C2: These fields are mutually exclusive. When this field
      is present, the presence of the Instantaneous Torque
      Magnitude Array is excluded.</br></InformativeText>
      <Requirement>C2</Requirement>
      <Format>sint16</Format>
      <Unit>org.bluetooth.unit.force.newton</Unit>
      <DecimalExponent>0</DecimalExponent>
      <Repeated>1</Repeated>
    </Field>
    <Field name="Instantaneous Torque Magnitude Array">
      <InformativeText>Unit is in newton/meter with a resolution of
      1/32 
      <br>Array Order - Older is towards the LSO and Newer is
      towards the MSO</br>
      <br>C2: These fields are mutually exclusive. When this field
      is present, the presence of the Instantaneous Force Magnitude
      Array is excluded.</br></InformativeText>
      <Requirement>C2</Requirement>
      <Format>sint16</Format>
      <Unit>org.bluetooth.unit.moment_of_force.newton_metre</Unit>
      <BinaryExponent>-5</BinaryExponent>
      <Repeated>1</Repeated>
    </Field>
  </Value>
  <Note>
    <p>The fields in the above table, reading from top to bottom,
    are shown in the order of LSO to MSO, where LSO = Least
    Significant Octet and MSO = Most Significant Octet. The Least
    Significant Octet represents the eight bits numbered 0 to
    7.</p>
  </Note>
</Characteristic>