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schema.xml
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<?xml version="1.0" encoding="UTF-8"?>
<schema name="cc_demo1" endian="big" dslVersion="7">
<fields>
<enum name="MsgId" type="uint8" semanticType="messageId" >
<validValue name="Ack" val="0" />
<validValue name="SimpleInts" val="1" />
<validValue name="ScaledInts" val="2" />
<validValue name="Floats" val="3" />
<validValue name="Enums" val="4" />
<validValue name="Sets" val="5" />
<validValue name="Bitfields" val="6" />
<validValue name="Strings" val="7" />
<validValue name="Datas" val="8" />
<validValue name="Lists" val="9" />
<validValue name="Optionals" val="10" />
<validValue name="Variants" val="11" />
</enum>
</fields>
<frame name="Frame">
<sync name="Sync">
<int name="Sync" type="uint16" defaultValue="0xabcd" validValue="0xabcd" failOnInvalid="true"/>
</sync>
<size name="Size">
<int name="Size" type="uint16" serOffset="2" displayOffset="2"/>
</size>
<id name="Id" field="MsgId" />
<payload name="Data" />
<checksum name="Checksum" alg="crc-ccitt" from="Size">
<int name="Checksum" type="uint16" />
</checksum>
</frame>
<message name="Ack" id="MsgId.Ack" sender="Server">
<ref field="MsgId" />
</message>
<message name="SimpleInts" id="MsgId.SimpleInts" displayName="Simple Ints" sender="client">
<int name="F1" type="int8" defaultValue="S1">
<special name="S1" val="1" />
</int>
<int name="F2" type="uint8" defaultValue="2" />
<int name="F3" type="int16" defaultValue="3" />
<int name="F4" type="uint16" defaultValue="4" />
<int name="F5" type="int32" defaultValue="5"/>
<int name="F6" type="uint32" defaultValue="6">
<special name="S1" val="0xffffffff" />
</int>
<int name="F7" type="int64" defaultValue="7"/>
<int name="F8" type="uint64" defaultValue="8"/>
<int name="F9" type="intvar" length="4" defaultValue="9" />
<int name="F10" type="uintvar" length="4" defaultValue="10" endian="little">
<description>
Using little endian (LEB-128) to encode this field.
</description>
</int>
</message>
<fields>
<int name="Lat" type="int32" units="deg" scaling="1/10000000" displayDecimals="7">
<description>
Latitude in 1/10^7 of the degrees
</description>
</int>
<int reuse="Lat" name="Lon" description="Longitude in 1/10^7 of the degrees" />
</fields>
<message name="ScaledInts" id="MsgId.ScaledInts" displayName="Scaled Ints" sender="client">
<ref field="Lat" />
<ref field="Lon" />
<int name="Height" type="int32" units="mm" >
<description value="Height above ellipsoid in mm" />
</int>
<int name="SomeScaledVal" type="uint32" scaling="1/100" displayDecimals="2">
<description>
Some scaled value without units.
</description>
<displayName value="Some Scaled Value" />
</int>
</message>
<message name="Floats" id="MsgId.Floats" sender="client">
<float name="Timeout" type="float" units="sec">
<special name="Infinite" val="0.0" />
<special name="Invalid" val="nan" />
</float>
<float name="Distance" type="float" units="m" defaultValue="Invalid" displayDecimals="3">
<special name="Infinite" val="inf" />
<special name="Invalid" val="nan" />
</float>
</message>
<message name="Enums" id="MsgId.Enums" sender="client">
<enum name="F1" type="uint8">
<description value="Simple enum with sequential values" />
<validValue name="V0" val="0" />
<validValue name="V1" val="1" />
<validValue name="V2" val="2" />
</enum>
<enum name="F2" type="int16" defaultValue="V3">
<description>
Enum with signed values
</description>
<validValue name="V1" val="-1" />
<validValue name="V2" val="5" />
<validValue name="V3" val="6" />
<validValue name="V4" val="7" />
</enum>
<enum name="F3" type="uint32" length="3" defaultValue="V1" hexAssign="true">
<description>
Enum with non-standard length
</description>
<validValue name="V1" val="0x010203" />
<validValue name="V2" val="0x040506" />
</enum>
<enum name="F4" type="uintvar" length="2">
<description>
Enum with variable length
</description>
<validValue name="V1" val="0" />
<validValue name="V2" val="128" />
</enum>
</message>
<message name="Sets" id="MsgId.Sets" sender="client">
<set name="F1" type="uint8">
<description value="Sequential 1 byte set" />
<bit name="Bit0" idx="0" />
<bit name="Bit1" idx="1" />
<bit name="Bit2" idx="2" />
</set>
<set name="F2" length="2">
<description value="Non Sequential 2 bytes set" />
<bit name="Bit0" idx="0" />
<bit name="Bit15" idx="15" defaultValue="true" />
</set>
<set name="F3" length="3">
<description value="Non standard length (3 bytes) set" />
<bit name="Bit0" idx="0" />
<bit name="Bit2" idx="2" />
</set>
</message>
<message name="Bitfields" id="MsgId.Bitfields" sender="client">
<bitfield name="F1">
<int name="Mem1" type="uint8" bitLength="3" />
<set name="Mem2" bitLength="3">
<bit name="Bit0" idx="0" />
<bit name="Bit1" idx="1" />
<bit name="Bit2" idx="2" />
</set>
<enum name="Mem3" type="uint8" bitLength="2">
<validValue name="V1" val="0" />
<validValue name="V2" val="3" />
</enum>
</bitfield>
</message>
<message name="Strings" id="MsgId.Strings" sender="client">
<int name="F4Len" type="uint8" description="Detached length of F4." />
<string name="F1" length="5" description="Fixed length string" />
<string name="F2" defaultValue="hello">
<description value="Length prefixed string" />
<lengthPrefix>
<int name="Length" type="uint8" />
</lengthPrefix>
</string>
<string name="F3" zeroTermSuffix="true">
<description value="Zero terminated string" />
</string>
<string name="F4" lengthPrefix="$F4Len">
<description value="String with detached length prefix" />
</string>
<string name="F5" description="String without length limit" />
</message>
<message name="Datas" id="MsgId.Datas" sender="client">
<int name="F3Len" type="uint8" description="Detached length of F3." />
<data name="F1" length="5" description="Fixed length raw data" />
<data name="F2" defaultValue="ab cd ef">
<description value="Length prefixed raw data" />
<lengthPrefix>
<int name="Length" type="uint8" />
</lengthPrefix>
</data>
<data name="F3" lengthPrefix="$F3Len">
<description value="Data with detached length prefix" />
</data>
<data name="F4" description="Data without length limit" />
</message>
<message name="Lists" id="MsgId.Lists" sender="client">
<int name="F2Count" type="uint8" />
<list name="F1" count="5">
<description value="Fixed size list of int fields" />
<element>
<int name="Elem" type="uint32" />
</element>
</list>
<list name="F2" countPrefix="$F2Count">
<description value="List of int fields with detached count prefix" />
<element>
<int name="Elem" type="uint32" />
</element>
</list>
<list name="F3">
<description>List of bundles prefixed with number of elements</description>
<element>
<bundle name="Element">
<int name="Mem1" type="uint32" />
<int name="Mem2" type="int32" />
</bundle>
</element>
<countPrefix>
<int name="Count" type="uint8" />
</countPrefix>
</list>
<list name="F4">
<description>
List of bundles prefixed with serialization length.
Every element is prefixed with its serialization length as well.
</description>
<element>
<bundle name="Element">
<int name="Mem1" type="uint32" />
<string name="Mem2" />
</bundle>
</element>
<lengthPrefix>
<int name="Length" type="uint8" />
</lengthPrefix>
<elemLengthPrefix>
<int name="ElemLength" type="uint8" />
</elemLengthPrefix>
</list>
<list name="F5" elemFixedLength="true">
<description>
List of fixed length bundles prefixed with number of elements.
First element is prefixed with the serialization length of the element.
</description>
<element>
<bundle name="Element">
<int name="Mem1" type="uint32" />
<int name="Mem2" type="int32"/>
</bundle>
</element>
<countPrefix>
<int name="Count" type="uint8" />
</countPrefix>
<elemLengthPrefix>
<int name="ElemLength" type="uint8" />
</elemLengthPrefix>
</list>
</message>
<message name="Optionals" id="MsgId.Optionals" sender="client">
<set name="Flags" type="uint8">
<description value="Flags indicating existence of the fields to follow" />
<bit name="F2Exists" idx="0" />
<bit name="F3Missing" idx="1" />
</set>
<optional name="F2" defaultMode="missing" cond="$Flags.F2Exists">
<int name="F2" type="uint16" defaultValue="0x1111"/>
</optional>
<optional name="F3" defaultMode="exist" cond="!$Flags.F3Missing">
<int name="F3" type="uint16" defaultValue="0x2222" />
</optional>
</message>
<fields>
<int name="PropKey" type="uint8" displayName="Key" failOnInvalid="true" fixedValue="true"/>
<int name="PropType" reuse="PropKey" displayName="Type" />
<int name="PropRemLen" type="uint16" displayName="Length" semanticType="length" />
</fields>
<message name="Variants" id="MsgId.Variants" sender="client">
<description>
To demonstrate usage of variants fields, this message
contains a list of heterogatious values implemented using
variant field. Every element is a key-value pair.
</description>
<fields>
<list name="Props1">
<element>
<variant name="Property">
<bundle name="Prop1">
<int reuse="PropKey" name="Key" defaultValidValue="1" />
<int name="Val" type="int16" />
</bundle>
<bundle name="Prop2">
<int reuse="PropKey" name="Key" defaultValidValue="2" />
<int name="Val" type="uint32" />
</bundle>
<bundle name="Prop3">
<int reuse="PropKey" name="Key" defaultValidValue="3" />
<string name="Val">
<lengthPrefix>
<int name="Length" type="uint8" />
</lengthPrefix>
</string>
</bundle>
</variant>
</element>
<countPrefix>
<int name="Count" type="uint8" />
</countPrefix>
</list>
<list name="Props2">
<element>
<variant name="Property">
<bundle name="Prop1">
<int reuse="PropType" name="Type" defaultValidValue="1" />
<ref field="PropRemLen" name="Length" />
<int name="Val" type="int16" />
</bundle>
<bundle name="Prop2">
<int reuse="PropType" name="Type" defaultValidValue="2" />
<ref field="PropRemLen" name="Length" />
<int name="Val" type="uint32" />
</bundle>
<bundle name="Prop3">
<int reuse="PropType" name="Type" defaultValidValue="3" />
<ref field="PropRemLen" name="Length" />
<string name="Val" />
</bundle>
<bundle name="UnknownProp">
<int reuse="PropType" name="Type" failOnInvalid="false" fixedValue="false" />
<ref field="PropRemLen" name="Length" />
<data name="Val" />
</bundle>
</variant>
</element>
<lengthPrefix>
<int name="Length" type="uint8" />
</lengthPrefix>
</list>
</fields>
</message>
</schema>