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add S2OPC documentation Assisted-by: Claude Code Signed-off-by: raiden00pl <raiden00@railab.me>
45 lines
1.2 KiB
ReStructuredText
45 lines
1.2 KiB
ReStructuredText
==================================
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``s2opc`` OPC UA server example
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==================================
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Overview
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========
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``s2opc`` runs an OPC UA server on NuttX. It provides an anonymous
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``SecurityPolicy None`` endpoint and an address space generated as C source,
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without XML files or embedded certificates.
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Configuration
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=============
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Enable ``CONFIG_EXAMPLES_S2OPC``.
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``CONFIG_EXAMPLES_S2OPC_ENDPOINT_URL`` selects the default endpoint URL.
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Usage
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=====
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Start the server with the configured endpoint::
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nsh> s2opc
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S2OPC server: opc.tcp://10.0.0.2:4841
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Press Ctrl-C to stop
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An endpoint URL can be supplied on the command line::
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nsh> s2opc opc.tcp://192.168.1.20:4841
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The URL address must belong to a configured NuttX network interface. Press
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Ctrl-C to stop the server.
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Client test
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===========
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Connect an OPC UA client to the printed endpoint. The address space includes
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the standard ``ServerStatus.CurrentTime`` node, ``i=2258``, and the test
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variable ``ns=1;s=PubInt16``. For example, with the AsyncUA command-line
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tools installed on the host::
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$ uaread -u opc.tcp://10.0.0.2:4841 -n i=2258
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This test needs no separate OPC UA server: NuttX is the server and the host
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tool is the client.
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