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White Rabbit Trigger Distribution
Commit 5bf262e1 authored by Dimitris Lampridis's avatar Dimitris Lampridis
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[doc] work on devel intro

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doc/devel.rst
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......@@ -9,15 +9,23 @@ This section provides guidelines on how to develop a new WRTD Node (or, modify a
provided by the `WRTD project <https://www.ohwr.org/project/wrtd/>`_. If you simply need to control
an existing WRTD Node, please refer to :numref:`usage` instead.
It should be noted that a new Node need not necessarily use the resources provided by the WRTD
project itself. In fact, the only hard requirement is that the Node is able to send and/or receive
:ref:`Event Messages <message>` over an Ethernet-based LAN.
It should be noted that a new Node does not necessarily need to use the resources provided by the
WRTD project itself. In fact, the only hard requirement is that the Node must be able to send and/or
receive :ref:`Event Messages <message>` over an Ethernet-based LAN, using multicast UDP on address
``224.0.23.159``, port ``5044``.
Of course, the above is the absolute minimum requirement, which is already fullfilled by any LXI
device supporting the relevant LXI extended functions (see also :ref:`lxi`).
Moving one step further, the network interface of the Node should be White Rabbit enabled, to allow
for accurate timestamping and sub-ns synchronisation between the Nodes.
for accurate timestamping and sub-ns synchronisation between the Nodes. This has implications for
your :ref:`hw_dev`.
If your :ref:`node` contains an FPGA and you choose to use the WRTD-provided :ref:`gw_dev`
resources, then this also opens up the possibility of using the WRTD-provided :ref:`fw_dev`
resources as well, to develop the application(s) running inside the FPGA. A WRTD :ref:`node`
developed with the WRTD :ref:`gw_dev` and :ref:`fw_dev` resources will be accessible via the
provided :ref:`clib`, :ref:`pywrap` and :ref:`tools`.
.. _dev_setup:
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