samples: dect: add simple sample

Add simple dect sample.

Signed-off-by: Eivind Jølsgard <eivind.jolsgard@nordicsemi.no>

samples/dect/dect_phy/hello_dect/CMakeLists.txt

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+#
+# Copyright (c) 2024 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(hello_dect)
+
+# NORDIC SDK APP START
+target_sources(app PRIVATE src/main.c)
+# NORDIC SDK APP END

samples/dect/dect_phy/hello_dect/Kconfig

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+#
+# Copyright (c) 2024 Nordic Semiconductor
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+config CARRIER
+ int "Carrier to use"
+ default 1677 #during development, remove default from sample so cutomer must address it?-
+ help
+ The availability of the channels and the exact regulation to use them varies in different countries.
+ See ETSI TS 103 636-2 5.4.2 for the calculation.
+
+config MCS
+ int
+ default 1
+ help
+ The MCS impacts how much data can be fit into subslots/slots.
+ This is now hardcoded assuming MCS 1.
+
+config TX_POWER
+ int "Transmission power"
+ range 0 11
+ default 1
+ help
+ TX power, 11 == 19 dBm, maximum of the HW(!)
+
+config TX_INTERVAL_SECONDS
+ int "Transmission interval in seconds"
+ default 5
+
+config TX_TRANSMISSION_CYCLES_BEFORE_EXIT
+ int "Number of transmissions lost before receiver device times out"
+ default 3
+
+module = DECT_PHY_HELLO
+module-str = DECT NR+ PHY hello DECT
+source "${ZEPHYR_BASE}/subsys/logging/Kconfig.template.log_config"
+
+menu "Zephyr Kernel"
+source "Kconfig.zephyr"
+endmenu

samples/dect/dect_phy/hello_dect/README.rst

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+.. _nrf_modem_dect_phy_hello:
+
+nRF91x1: DECT NR+ PHY hello sample
+##################################
+
+.. contents::
+ :local:
+ :depth: 2
+
+This sample demonstrates how to set up a simple DECT NR+ application with the DECT PHY modem firmware.
+
+.. important::
+
+ DECT NR+ operates on free but regulated radio channels. The regulation and availability of the channels varies in different countries.
+ It is the responsibility of the developer to operate the devices according to the local regulation, both at the development site and the device operation regions.
+
+Requirements
+************
+
+The sample needs at least two nRF91x1 Development Kits.
+
+See :ref:`nrf91x1_ug_intro` for more details.
+
+.. note::
+
+ The :ref:`nrf_modem_dect_phy_simple` require a special modem firmware to run on the nRF91x1 modem core. Please contact our sales department to know more.
+
+
+.. include:: /includes/tfm.txt
+
+Overview
+********
+
+The sample shows a simple broadcast of DECT NR+ messages from one device to other devices on a hard-coded channel.
+
+During initialization the devices listens on the channel for broadcast transmissions.
+Dependent on the detection of transmissions, the device takes one of the following roles:
+
+* If no transmission is detected, the device takes the role as a tranceiver. In this role, the device sends an incrementing counter value on the hard-coded channel. The period between each transmission is decided by the :kconfig:option:`CONFIG_TX_INTERVAL_SECONDS` Kconfig option.
+* If a transmission is detected, the device takes the role as a receiver. In this role, the device listens for incomming messages.
+ By comparing the counter value with the previous one, the device detects if messages are lost in transmission.
+
+The device will exit the sample if the user presses button 1, ``exit`` is entered in the terminal or if an irrecoverable error occurs.
+A device in the receiving role will also exit if no message is received within a given number of transmission cycles, see :kconfig:option:`CONFIG_TX_TRANSMISSION_CYCLES_BEFORE_EXIT.
+
+Upon exit, devices in the receiving role will print a simple statistics.
+Each device can be reset to run the sample again.
+
+TX Mode: led 1 on, led 2 blinks
+RX mode: led 1 off, led 2 blinks
+
+User interface
+***************
+
+Button 1:
+ Exits the sample.
+
+
+Building and running
+********************
+
+.. |sample path| replace:: :file:`samples/modem_trace_flash`
+
+.. include:: /includes/build_and_run_ns.txt
+
+Testing
+=======
+
+|test_sample|
+
+After programming the sample to your development kits, test it by performing the following steps:
+
+#. |connect_kit|
+#. |connect_terminal|
+#. Observe that the device will start listening for incomming data. If data is received, the device will take the receiver role, if not the device will take the transmitter role.
+#. Observe that the transmitter device will transmit a counter value that is received by the other devices.
+#. Press button 1 on the transmitter device. Observe that the device stops transmitting, and the other devices stop receiving.
+#. After some time, observe that the receiver devices prints the simple statistics and exit the sample.
+
+
+Dependencies
+************
+
+It uses the following `sdk-nrfxlib`_ libraries:
+
+* :ref:`nrfxlib:nrf_modem`
+
+It uses the following Zephyr libraries:
+
+* :ref:`zephyr:uart_api`
+
+
+In addition, it uses the following secure firmware components:
+
+* :ref:`Trusted Firmware-M <ug_tfm>`

samples/dect/dect_phy/hello_dect/prj.conf

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+CONFIG_DK_LIBRARY=y
+CONFIG_LOG=y
+
+CONFIG_MODEM_ANTENNA_AT_MAGPIO=""
+CONFIG_MODEM_ANTENNA_AT_COEX0=""
+
+CONFIG_NRF_MODEM_LIB=y
+
+CONFIG_NRF_MODEM_LINK_BINARY_DECT_PHY=y

samples/dect/dect_phy/hello_dect/sample.yaml

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+sample:
+ name: Modem trace flash
+tests:
+ sample.nrf9160.modem_trace_flash:
+ build_only: true
+ integration_platforms:
+ - nrf9160dk_nrf9160_ns
+ platform_allow: nrf9160dk_nrf9160_ns
+ tags: ci_build