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Gerard Marull-Paretas c7b5b3c419 samples: migrate includes to contain <zephyr/...> prefix 
In order to bring consistency in-tree, migrate all samples to the use
the new prefix <zephyr/...>. Note that the conversion has been scripted:

```python
from pathlib import Path
import re

EXTENSIONS = ("c", "h", "cpp", "rst")

for p in Path(".").glob("samples/**/*"):
    if not p.is_file() or p.suffix and p.suffix[1:] not in EXTENSIONS:
        continue

    content = ""
    with open(p) as f:
        for line in f:
            m = re.match(r"^(.*)#include <(.*)>(.*)$", line)
            if (m and
                not m.group(2).startswith("zephyr/") and
                (Path(".") / "include" / "zephyr" / m.group(2)).exists()):
                content += (
                    m.group(1) +
                    "#include <zephyr/" + m.group(2) +">" +
                    m.group(3) + "\n"
                )
            else:
                content += line

    with open(p, "w") as f:
        f.write(content)
```

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
 		2022-05-06 11:29:59 +02:00
..
boards
…
src samples: migrate includes to contain <zephyr/...> prefix 2022-05-06 11:29:59 +02:00
CMakeLists.txt
…
README.rst
…
overlay-aoa.conf
…
prj.conf
…
sample.yaml
…

README.rst 

.. _bluetooth_direction_finding_connectionless_tx:

Bluetooth: Direction Finding Periodic Advertising Beacon
########################################################

Overview
********

A simple application demonstrating the BLE Direction Finding CTE Broadcaster
functionality by sending Constant Tone Extension with periodic advertising PDUs.

Requirements
************

* Nordic nRF SoC based board with Direction Finding support (example boards:
  :ref:`nrf52833dk_nrf52833`, :ref:`nrf5340dk_nrf5340`)
* Antenna matrix for AoD (optional)

Check your SoC's product specification for Direction Finding support if you are
unsure.

Building and Running
********************

By default the application supports Angle of Arrival (AoA) and Angle of
Departure (AoD) mode.

To use Angle of Arrival mode only, build this application as follows, changing
``nrf52833dk_nrf52833`` as needed for your board:

.. zephyr-app-commands::
   :zephyr-app: samples/bluetooth/direction_finding_connectionless_tx
   :host-os: unix
   :board: nrf52833dk_nrf52833
   :gen-args: -DOVERLAY_CONFIG=overlay-aoa.conf
   :goals: build flash
   :compact:

To run the application on nRF5340DK, a Bluetooth controller application must
also run on the network core. The :zephyr_file:`samples/bluetooth/hci_rpmsg`
sample application may be used. To build this sample with direction finding
support enabled:

* Copy
  :zephyr_file:`samples/bluetooth/direction_finding_connectionless_tx/boards/nrf52833dk_nrf52833.overlay`
  to a new file,
  :file:`samples/bluetooth/hci_rpmsg/boards/nrf5340dk_nrf5340_cpunet.overlay`.
* Make sure the same GPIO pins are assigned to Direction Finding Extension in file
  :zephyr_file:`samples/bluetooth/direction_finding_connectionless_tx/boards/nrf5340dk_nrf5340_cpuapp.overlay`.
  as those in the created file :file:`samples/bluetooth/hci_rpmsg/boards/nrf5340dk_nrf5340_cpunet.overlay`.
* Copy
  :zephyr_file:`samples/bluetooth/direction_finding_connectionless_tx/boards/nrf52833dk_nrf52833.conf`
  to a new file,
  :file:`samples/bluetooth/hci_rpmsg/boards/nrf5340dk_nrf5340_cpunet.conf`. Add
  the line ``CONFIG_BT_EXT_ADV=y`` to enable extended size of
  :kconfig:option:`CONFIG_BT_BUF_CMD_TX_SIZE` to support the LE Set Extended
  Advertising Data command.

Antenna matrix configuration
****************************

To use this sample with Angle of Departure enabled on Nordic SoCs, additional
configuration must be provided via :ref:`devicetree <dt-guide>` to enable
control of the antenna array, as well as via the ``ant_patterns`` array in the
source code.

An example devicetree overlay is in
:zephyr_file:`samples/bluetooth/direction_finding_connectionless_tx/boards/nrf52833dk_nrf52833.overlay`.
You can customize this overlay when building for the same board, or create your
own board-specific overlay in the same directory for a different board. See
:dtcompatible:`nordic,nrf-radio` for documentation on the properties used in
this overlay. See :ref:`set-devicetree-overlays` for information on setting up
and using overlays.

Note that antenna matrix configuration for the nRF5340 SoC is part of the
network core application. When :ref:`bluetooth-hci-rpmsg-sample` is used as
network core application, the antenna matrix configuration should be stored in
the file
:file:`samples/bluetooth/hci_rpmsg/boards/nrf5340dk_nrf5340_cpunet.overlay`
instead.

In addition to the devicetree configuration, to successfully use the Direction
Finding locator when the AoA mode is enabled, also update the antenna patterns
in the :cpp:var:`ant_patterns` array in
:zephyr_file:`samples/bluetooth/direction_finding_connectionless_tx/src/main.c`.