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Document protocol extensions

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Thomas Geymayer 2011-12-27 21:29:37 +01:00 committed by ThorstenB
parent 4ec6810c29
commit 3f133c014f
1 changed files with 40 additions and 0 deletions
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docs-mini/README.protocol
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@ -131,6 +131,23 @@ each of which describes the properties of on variable to write/read.
<offset> an optional offset which can be used for unit conversion. <offset> an optional offset which can be used for unit conversion.
(for example, degrees Celcius to degrees Fahrenheit). (for example, degrees Celcius to degrees Fahrenheit).
For input chunks there exist some more options:
<rel> optional boolean parameter to enable handling of incoming values
as relative changes (default: false)
(Can be eg. used to realise up/down buttons by just sending 1 or
-1 respectively)
<min> an optional minimum limit for the value to be clamped to. This
limit is always specified as absolute value, also with relative
changes enabled. (default: 0)
<max> an optional upper limit for the input value to be clamped to. If
<min> equals <max> no limit is applied. (default: 0)
<wrap> instead of clamping to minimum and maximum limits, wrap values
around. (default: false)
(Usefull for eg. heading selector to start again with 1 for
values higher than 360)
Chunks can also consist of a single constant <format>, like in: Chunks can also consist of a single constant <format>, like in:
<format>Data Section</format> <format>Data Section</format>
@ -184,7 +201,30 @@ P=3.59
</PropertyList> </PropertyList>
Control the heading bug by sending relative changes separated by newlines:
<?xml version="1.0"?>
<PropertyList>
<generic>
<input>
<line_separator>newline</line_separator>
<chunk>
<name>heading bug</name>
<type>int</type>
<node>/autopilot/settings/heading-bug-deg</node>
<relative>true</relative>
<min>1</min>
<max>360</max>
<wrap>true</wrap>
</chunk>
</input>
</generic>
</PropertyList>
-- writing data in XML syntax ------------------------------------------------- -- writing data in XML syntax -------------------------------------------------