.. zephyr:code-sample:: coprocessor
:name: OpenThread co-processor
:relevant-api: openthread
Build a Thread border-router using OpenThread's co-processor designs.
Overview
********
OpenThread Co-Processor allows building a Thread Border Router. The code in this
sample is only the MCU target part of a complete Thread Border Router.
The Co-Processor can act in two variants: Network Co-Processor (NCP) and Radio
Co-Processor (RCP), see https://openthread.io/platforms/co-processor.
Additional required host-side tools (e.g. otbr-agent) to build a Thread Border
Router can be obtained by following
https://openthread.io/guides/border-router/build#set-up-the-border-router.
The preferred Co-Processor configuration of OpenThread is RCP now.
The source code for this sample application can be found at:
:zephyr_file:`samples/net/openthread/coprocessor`.
Building and Running
********************
Build the OpenThread NCP sample application like this:
.. zephyr-app-commands::
:zephyr-app: samples/net/openthread/coprocessor
:board: <board to use>
:conf: <config file to use>
:goals: build
:compact:
Build the OpenThread NCP sample application which uses CDC ACM UART device:
.. zephyr-app-commands::
:zephyr-app: samples/net/openthread/coprocessor
:board: nrf52840dk/nrf52840
:goals: build flash
:gen-args: -DDTC_OVERLAY_FILE=usb.overlay -DEXTRA_CONF_FILE=overlay-usb-nrf-br.conf
:compact:
Example building for the nrf52840dk/nrf52840 for RCP:
.. zephyr-app-commands::
:zephyr-app: samples/net/openthread/coprocessor
:host-os: unix
:board: nrf52840dk/nrf52840
:conf: "prj.conf overlay-rcp.conf"
:goals: run
:compact:
There are configuration files for different boards and setups in the
coprocessor directory:
- :file:`prj.conf`
Generic NCP config file. Use this, if you want the NCP configuration.
- :file:`overlay-rcp.conf`
RCP overlay file. Use this in combination with prj.conf, if you want the RCP
configuration.
- :file:`overlay-tri-n4m-br.conf`
This is an overlay for the dedicated Thread Border Router hardware
https://www.tridonic.com/com/en/download/data_sheets/net4more_Borderrouter_PoE-Thread_en.pdf.
The board support is not part of the Zephyr repositories, but the
product is based on NXP K64 and AT86RF233. This file can be used as an
example for a development set-up based on development boards.
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