boards/arm/bl5340_dvk/doc/index.rst - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 .. _bl5340_dvk:

 Laird Connectivity BL5340 DVK
 #############################

 Overview
 ********
 The BL5340 Development Kit provides support for the Laird Connectivity
 BL5340 module which is powered by a dual-core Nordic Semiconductor
 nRF5340 ARM Cortex-M33F CPU. The nRF5340 inside the BL5340 module is a
 dual-core SoC based on the Arm® Cortex®-M33 architecture, with:

 * a full-featured Arm Cortex-M33F core with DSP instructions, FPU, and
   Armv8-M Security Extension, running at up to 128 MHz, referred to as
   the **application core**
 * a secondary Arm Cortex-M33 core, with a reduced feature set, running
   at a fixed 64 MHz, referred to as the **network core**.

 The bl5340_dvk_cpuapp build target provides support for the application
 core on the BL5340 module. The bl5340_dvk_cpunet build target provides
 support for the network core on the BL5340 module. If ARM TrustZone is
 used then the bl5340_dvk_cpuapp build target provides support for the
 non-secure partition of the application core on the BL5340 module.

 This development kit has the following features:

 * :abbr:`ADC (Analog to Digital Converter)`
 * CLOCK
 * FLASH
 * :abbr:`GPIO (General Purpose Input Output)`
 * :abbr:`IDAU (Implementation Defined Attribution Unit)`
 * :abbr:`I2C (Inter-Integrated Circuit)`
 * :abbr:`I2S (Inter-Integrated Sound)`
 * :abbr:`MPU (Memory Protection Unit)`
 * :abbr:`NVIC (Nested Vectored Interrupt Controller)`
 * :abbr:`PWM (Pulse Width Modulation)`
 * :abbr:`QSPI (Quad Serial Peripheral Interface)`
 * RADIO (Bluetooth Low Energy and 802.15.4)
 * :abbr:`RTC (nRF RTC System Clock)`
 * Segger RTT (RTT Console)
 * :abbr:`SPI (Serial Peripheral Interface)`
 * :abbr:`UARTE (Universal asynchronous receiver-transmitter)`
 * :abbr:`USB (Universal Serial Bus)`
 * :abbr:`WDT (Watchdog Timer)`

 .. figure:: img/bl5340_dvk_top.jpg
      :align: center
      :alt: BL5340 DVK

      BL5340 DVK (Credit: Laird Connectivity)

 More information about the module can be found on the
 `BL5340 homepage`_.

 The `Nordic Semiconductor Infocenter`_
 contains the processor's information and the datasheet.

 Hardware
 ********

 The BL5340 DVK has two external oscillators. The frequency of
 the slow clock is 32.768KHz. The frequency of the main clock
 is 32MHz.

 Supported Features
 ==================

 The bl5340_dvk_cpuapp board configuration supports the following
 hardware features:

 +-----------+------------+----------------------+
 | Interface | Controller | Driver/Component     |
 +===========+============+======================+
 | ADC       | on-chip    | adc                  |
 +-----------+------------+----------------------+
 | CLOCK     | on-chip    | clock_control        |
 +-----------+------------+----------------------+
 | FLASH     | on-chip    | flash                |
 +-----------+------------+----------------------+
 | GPIO      | on-chip    | gpio                 |
 +-----------+------------+----------------------+
 | I2C(M)    | on-chip    | i2c                  |
 +-----------+------------+----------------------+
 | MPU       | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | NVIC      | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | QSPI(M)   | on-chip    | nor                  |
 +-----------+------------+----------------------+
 | PWM       | on-chip    | pwm                  |
 +-----------+------------+----------------------+
 | RTC       | on-chip    | system clock         |
 +-----------+------------+----------------------+
 | RTT       | Segger     | console              |
 +-----------+------------+----------------------+
 | SPI(M/S)  | on-chip    | spi                  |
 +-----------+------------+----------------------+
 | SPU       | on-chip    | system protection    |
 +-----------+------------+----------------------+
 | UARTE     | on-chip    | serial               |
 +-----------+------------+----------------------+
 | USB       | on-chip    | usb                  |
 +-----------+------------+----------------------+
 | WDT       | on-chip    | watchdog             |
 +-----------+------------+----------------------+

 The bl5340_dvk_cpunet board configuration supports the following
 hardware features:

 +-----------+------------+----------------------+
 | Interface | Controller | Driver/Component     |
 +===========+============+======================+
 | CLOCK     | on-chip    | clock_control        |
 +-----------+------------+----------------------+
 | FLASH     | on-chip    | flash                |
 +-----------+------------+----------------------+
 | GPIO      | on-chip    | gpio                 |
 +-----------+------------+----------------------+
 | I2C(M)    | on-chip    | i2c                  |
 +-----------+------------+----------------------+
 | MPU       | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | NVIC      | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | RADIO     | on-chip    | Bluetooth,           |
 |           |            | ieee802154           |
 +-----------+------------+----------------------+
 | RTC       | on-chip    | system clock         |
 +-----------+------------+----------------------+
 | RTT       | Segger     | console              |
 +-----------+------------+----------------------+
 | SPI(M/S)  | on-chip    | spi                  |
 +-----------+------------+----------------------+
 | UARTE     | on-chip    | serial               |
 +-----------+------------+----------------------+
 | WDT       | on-chip    | watchdog             |
 +-----------+------------+----------------------+

 Other hardware features have not been enabled yet for this board.
 See `Nordic Semiconductor Infocenter`_
 for a complete list of hardware features.

 Connections and IOs
 ===================

 An eight-pin GPIO port expander is used to provide additional inputs
 and outputs to the BL5340 module.

 Refer to the `TI TCA9538 datasheet`_ for further details.

 LEDs
 ----

 * LED1 (blue) = via TCA9538 port expander channel P4 (active low)
 * LED2 (blue) = via TCA9538 port expander channel P5 (active low)
 * LED3 (blue) = via TCA9538 port expander channel P6 (active low)
 * LED4 (blue) = via TCA9538 port expander channel P7 (active low)

 Push buttons
 ------------

 * BUTTON1 = SW1 = via TCA9538 port expander channel P0 (active low)
 * BUTTON2 = SW2 = via TCA9538 port expander channel P1 (active low)
 * BUTTON3 = SW3 = via TCA9538 port expander channel P2 (active low)
 * BUTTON4 = SW4 = via TCA9538 port expander channel P3 (active low)
 * BOOT = boot (active low)

 External Memory
 ===============

 Several external memory sources are available for the BL5340 DVK. These
 are described as follows.

 Flash Memory
 ------------

 A Macronix MX25R6435FZNIL0 8MB external QSPI Flash memory part is
 incorporated for application image storage and large datasets.

 Refer to the `Macronix MX25R6435FZNIL0 datasheet`_ for further details.

 EEPROM Memory
 -------------

 A 32KB Giantec GT24C256C-2GLI-TR EEPROM is available via I2C for
 storage of infrequently updated data and small datasets.

 Refer to the `Giantec GT24C256C-2GLI-TR datasheet`_ for further details.

 External Memory
 ---------------

 An on-board micro SD card slot is available for use with micro SD cards.

 Sensors
 =======

 The BL5340 DVK incorporates two sensors for user application testing.
 These are described as follows.

 Temperature, Pressure, Humidity & Air Quality Sensor
 ----------------------------------------------------

 A Bosch BME680 Temperature, Pressure, Humidity & Air Quality sensor is
 available via I2C for environmental measurement applications.

 Refer to the `Bosch BME680 datasheet`_ for further details.

 3-Axis Accelerometer
 --------------------

 An ST Microelectronics LIS3DH 3-Axis Accelerometer is available via I2C
 for vibration and motion detection applications.

 Refer to the `ST Microelectronics LIS3DH datasheet`_ for further details.

 Ethernet
 ========

 Cabled 10/100 Base-T Ethernet Connectivity is available via a Microchip
 ENC424J600 Ethernet controller.

 Refer to the `Microchip ENC424J600 datasheet`_ for further details.

 TFT Display & Capacitive Touch Screen Controller
 ================================================

 A 2.8 inch, 240 x 320 pixel TFT display with capacitive touch
 controller is included with the BL5340 DVK for user interface
 application features.

 Refer to the `ER_TFTM028_4 datasheet`_ for a high level overview of the
 display.

 An ILI9341 TFT controller is incorporated in the TFT module and
 acts as the main controller, controlled via SPI.

 Refer to the `ILI9341 datasheet`_ for further details.

 An FT6206 Capacitive Touch Controller, controlled via I2C is
 also incorporated in the TFT module.

 Refer to the `FT6206 datasheet`_ for further details.

 Real-Time Clock
 ===============

 A real-time clock is available for accurate time data availability.

 Refer to the `Microchip MCP7940N datasheet`_ for further details.

 DAC
 ===

 A 10-bit Digital to Analog Converter is incorporated for generation of
 variable voltages.

 Refer to the `Microchip MCP4725 datasheet`_ for further details.

 Security components
 ===================

 - Implementation Defined Attribution Unit (`IDAU`_) on the application
   core. The IDAU is implemented with the System Protection Unit and is
   used to define secure and non-secure memory maps.  By default, all of
   the memory space (Flash, SRAM, and peripheral address space) is
   defined to be secure accessible only.
 - Secure boot.

 Programming and Debugging
 *************************

 The BL5340's application core supports the Armv8-M Security Extension.
 Applications built for the bl5340_dvk_cpuapp board by default
 boot in the Secure state.

 The BL5340's network core does not support the Armv8-M Security
 Extension. The IDAU may configure bus accesses by the network core to
 have Secure attribute set; the latter allows to build and run Secure
 only applications on the BL5340 module.

 Building Secure/Non-Secure Zephyr applications with Arm |reg| TrustZone |reg|
 =============================================================================

 Applications on the BL5340 module may contain a Secure and a Non-Secure
 firmware image for the application core. The Secure image can be built
 using either Zephyr or `Trusted Firmware M`_ (TF-M). Non-Secure
 firmware images are always built using Zephyr. The two alternatives are
 described below.

 .. note::

    By default the the Secure image for BL5340's application core is
    built using TF-M.

 Building the Secure firmware with TF-M
 --------------------------------------

 The process to build the Secure firmware image using TF-M and the
 Non-Secure firmware image using Zephyr requires the following steps:

 1. Build the Non-Secure Zephyr application
    for the application core using ``-DBOARD=bl5340_dvk_cpuapp_ns``.
    To invoke the building of TF-M the Zephyr build system requires the
    Kconfig option ``BUILD_WITH_TFM`` to be enabled, which is done by
    default when building Zephyr as a Non-Secure application.
    The Zephyr build system will perform the following steps automatically:

       * Build the Non-Secure firmware image as a regular Zephyr application
       * Build a TF-M (secure) firmware image
       * Merge the output image binaries together
       * Optionally build a bootloader image (MCUboot)

 .. note::

    Depending on the TF-M configuration, an application DTS overlay may
    be required, to adjust the Non-Secure image Flash and SRAM starting
    address and sizes.

 2. Build the application firmware for the network core using
    ``-DBOARD=bl5340_dvk_cpunet``.

 Building the Secure firmware using Zephyr
 -----------------------------------------

 The process to build the Secure and the Non-Secure firmware images
 using Zephyr requires the following steps:

 1. Build the Secure Zephyr application for the application core
    using ``-DBOARD=bl5340_dvk_cpuapp`` and
    ``CONFIG_TRUSTED_EXECUTION_SECURE=y`` and ``CONFIG_BUILD_WITH_TFM=n``
    in the application project configuration file.
 2. Build the Non-Secure Zephyr application for the application core
    using ``-DBOARD=bl5340_dvk_cpuapp_ns``.
 3. Merge the two binaries together.
 4. Build the application firmware for the network core using
    ``-DBOARD=bl5340_dvk_cpunet``.

 When building a Secure/Non-Secure application for the BL5340's
 application core, the Secure application will have to set the IDAU
 (SPU) configuration to allow Non-Secure access to all CPU resources
 utilized by the Non-Secure application firmware. SPU configuration
 shall take place before jumping to the Non-Secure application.

 Building a Secure only application
 ==================================

 Build the Zephyr app in the usual way (see :ref:`build_an_application`
 and :ref:`application_run`), using ``-DBOARD=bl5340_dvk_cpuapp`` for
 the firmware running on the BL5340's application core, and using
 ``-DBOARD=bl5340_dvk_cpunet`` for the firmware running
 on the BL5340's network core.

 Flashing
 ========

 Follow the instructions in the :ref:`nordic_segger` page to install
 and configure all the necessary software. Further information can be
 found in :ref:`nordic_segger_flashing`. Then you can build and flash
 applications as usual (:ref:`build_an_application` and
 :ref:`application_run` for more details).

 .. warning::

    The BL5340 has a flash read-back protection feature. When flash
    read-back protection is active, you will need to recover the chip
    before reflashing. If you are flashing with
    :ref:`west <west-build-flash-debug>`, run this command for more
    details on the related ``--recover`` option:

    .. code-block:: console

       west flash -H -r nrfjprog --skip-rebuild

 .. note::

    Flashing and debugging applications on the BL5340 DVK requires
    upgrading the nRF Command Line Tools to version 10.12.0 or newer.
    Further information on how to install the nRF Command Line Tools can
    be found in :ref:`nordic_segger_flashing`.

 Here is an example for the :ref:`hello_world` application running on the
 BL5340's application core.

 First, run your favorite terminal program to listen for output.

 .. code-block:: console

    $ minicom -D <tty_device> -b 115200

 Replace :code:`<tty_device>` with the port where the BL5340 DVK board
 can be found. For example, under Linux, :code:`/dev/ttyACM0`.

 Then build and flash the application in the usual way.

 .. zephyr-app-commands::
    :zephyr-app: samples/hello_world
    :board: bl5340_dvk_cpuapp
    :goals: build flash

 Debugging
 =========

 Refer to the :ref:`nordic_segger` page to learn about debugging
 boards with a Segger IC.

 Testing Bluetooth on the BL5340 DVK
 ***********************************
 Many of the Bluetooth examples will work on the BL5340 DVK.
 Try them out:

 * :ref:`ble_peripheral`
 * :ref:`bluetooth-eddystone-sample`
 * :ref:`bluetooth-ibeacon-sample`

 References
 **********

 .. target-notes::

 .. _IDAU:
    https://developer.arm.com/docs/100690/latest/attribution-units-sau-and-idau
 .. _BL5340 homepage: https://www.lairdconnect.com/wireless-modules/bluetooth-modules/bluetooth-5-modules/bl5340-series-multi-core-bluetooth-52-802154-nfc-modules
 .. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com
 .. _TI TCA9538 datasheet: https://www.ti.com/lit/gpn/TCA9538
 .. _Macronix MX25R6435FZNIL0 datasheet: https://www.macronix.com/Lists/Datasheet/Attachments/8868/MX25R6435F,%20Wide%20Range,%2064Mb,%20v1.6.pdf
 .. _Giantec GT24C256C-2GLI-TR datasheet: http://www.giantec-semi.com/Upload/datasheet/CU/GT24C256C_DS_Cu.pdf
 .. _Bosch BME680 datasheet: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme680-ds001.pdf
 .. _ST Microelectronics LIS3DH datasheet: https://www.st.com/resource/en/datasheet/lis3dh.pdf
 .. _Microchip ENC424J600 datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/39935c.pdf
 .. _ER_TFTM028_4 datasheet: https://www.buydisplay.com/download/manual/ER-TFTM028-4_Datasheet.pdf
 .. _ILI9341 datasheet: https://www.buydisplay.com/download/ic/ILI9341.pdf
 .. _FT6206 datasheet: https://www.buydisplay.com/download/ic/FT6206.pdf
 .. _Microchip MCP7940N datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/20005010H.pdf
 .. _Microchip MCP4725 datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/22039d.pdf
 .. _Trusted Firmware M: https://www.trustedfirmware.org/projects/tf-m/
	.. _bl5340_dvk:

	Laird Connectivity BL5340 DVK
	#############################

	Overview
	********
	The BL5340 Development Kit provides support for the Laird Connectivity
	BL5340 module which is powered by a dual-core Nordic Semiconductor
	nRF5340 ARM Cortex-M33F CPU. The nRF5340 inside the BL5340 module is a
	dual-core SoC based on the Arm® Cortex®-M33 architecture, with:

	* a full-featured Arm Cortex-M33F core with DSP instructions, FPU, and
	Armv8-M Security Extension, running at up to 128 MHz, referred to as
	the application core
	* a secondary Arm Cortex-M33 core, with a reduced feature set, running
	at a fixed 64 MHz, referred to as the network core.

	The bl5340_dvk_cpuapp build target provides support for the application
	core on the BL5340 module. The bl5340_dvk_cpunet build target provides
	support for the network core on the BL5340 module. If ARM TrustZone is
	used then the bl5340_dvk_cpuapp build target provides support for the
	non-secure partition of the application core on the BL5340 module.

	This development kit has the following features:

	* :abbr:`ADC (Analog to Digital Converter)`
	* CLOCK
	* FLASH
	* :abbr:`GPIO (General Purpose Input Output)`
	* :abbr:`IDAU (Implementation Defined Attribution Unit)`
	* :abbr:`I2C (Inter-Integrated Circuit)`
	* :abbr:`I2S (Inter-Integrated Sound)`
	* :abbr:`MPU (Memory Protection Unit)`
	* :abbr:`NVIC (Nested Vectored Interrupt Controller)`
	* :abbr:`PWM (Pulse Width Modulation)`
	* :abbr:`QSPI (Quad Serial Peripheral Interface)`
	* RADIO (Bluetooth Low Energy and 802.15.4)
	* :abbr:`RTC (nRF RTC System Clock)`
	* Segger RTT (RTT Console)
	* :abbr:`SPI (Serial Peripheral Interface)`
	* :abbr:`UARTE (Universal asynchronous receiver-transmitter)`
	* :abbr:`USB (Universal Serial Bus)`
	* :abbr:`WDT (Watchdog Timer)`

	.. figure:: img/bl5340_dvk_top.jpg
	:align: center
	:alt: BL5340 DVK

	BL5340 DVK (Credit: Laird Connectivity)

	More information about the module can be found on the
	`BL5340 homepage`_.

	The `Nordic Semiconductor Infocenter`_
	contains the processor's information and the datasheet.

	Hardware
	********

	The BL5340 DVK has two external oscillators. The frequency of
	the slow clock is 32.768KHz. The frequency of the main clock
	is 32MHz.

	Supported Features
	==================

	The bl5340_dvk_cpuapp board configuration supports the following
	hardware features:

	+-----------+------------+----------------------+
	\| Interface \| Controller \| Driver/Component \|
	+===========+============+======================+
	\| ADC \| on-chip \| adc \|
	+-----------+------------+----------------------+
	\| CLOCK \| on-chip \| clock_control \|
	+-----------+------------+----------------------+
	\| FLASH \| on-chip \| flash \|
	+-----------+------------+----------------------+
	\| GPIO \| on-chip \| gpio \|
	+-----------+------------+----------------------+
	\| I2C(M) \| on-chip \| i2c \|
	+-----------+------------+----------------------+
	\| MPU \| on-chip \| arch/arm \|
	+-----------+------------+----------------------+
	\| NVIC \| on-chip \| arch/arm \|
	+-----------+------------+----------------------+
	\| QSPI(M) \| on-chip \| nor \|
	+-----------+------------+----------------------+
	\| PWM \| on-chip \| pwm \|
	+-----------+------------+----------------------+
	\| RTC \| on-chip \| system clock \|
	+-----------+------------+----------------------+
	\| RTT \| Segger \| console \|
	+-----------+------------+----------------------+
	\| SPI(M/S) \| on-chip \| spi \|
	+-----------+------------+----------------------+
	\| SPU \| on-chip \| system protection \|
	+-----------+------------+----------------------+
	\| UARTE \| on-chip \| serial \|
	+-----------+------------+----------------------+
	\| USB \| on-chip \| usb \|
	+-----------+------------+----------------------+
	\| WDT \| on-chip \| watchdog \|
	+-----------+------------+----------------------+

	The bl5340_dvk_cpunet board configuration supports the following
	hardware features:

	+-----------+------------+----------------------+
	\| Interface \| Controller \| Driver/Component \|
	+===========+============+======================+
	\| CLOCK \| on-chip \| clock_control \|
	+-----------+------------+----------------------+
	\| FLASH \| on-chip \| flash \|
	+-----------+------------+----------------------+
	\| GPIO \| on-chip \| gpio \|
	+-----------+------------+----------------------+
	\| I2C(M) \| on-chip \| i2c \|
	+-----------+------------+----------------------+
	\| MPU \| on-chip \| arch/arm \|
	+-----------+------------+----------------------+
	\| NVIC \| on-chip \| arch/arm \|
	+-----------+------------+----------------------+
	\| RADIO \| on-chip \| Bluetooth, \|
	\| \| \| ieee802154 \|
	+-----------+------------+----------------------+
	\| RTC \| on-chip \| system clock \|
	+-----------+------------+----------------------+
	\| RTT \| Segger \| console \|
	+-----------+------------+----------------------+
	\| SPI(M/S) \| on-chip \| spi \|
	+-----------+------------+----------------------+
	\| UARTE \| on-chip \| serial \|
	+-----------+------------+----------------------+
	\| WDT \| on-chip \| watchdog \|
	+-----------+------------+----------------------+

	Other hardware features have not been enabled yet for this board.
	See `Nordic Semiconductor Infocenter`_
	for a complete list of hardware features.

	Connections and IOs
	===================

	An eight-pin GPIO port expander is used to provide additional inputs
	and outputs to the BL5340 module.

	Refer to the `TI TCA9538 datasheet`_ for further details.

	LEDs
	----

	* LED1 (blue) = via TCA9538 port expander channel P4 (active low)
	* LED2 (blue) = via TCA9538 port expander channel P5 (active low)
	* LED3 (blue) = via TCA9538 port expander channel P6 (active low)
	* LED4 (blue) = via TCA9538 port expander channel P7 (active low)

	Push buttons
	------------

	* BUTTON1 = SW1 = via TCA9538 port expander channel P0 (active low)
	* BUTTON2 = SW2 = via TCA9538 port expander channel P1 (active low)
	* BUTTON3 = SW3 = via TCA9538 port expander channel P2 (active low)
	* BUTTON4 = SW4 = via TCA9538 port expander channel P3 (active low)
	* BOOT = boot (active low)

	External Memory
	===============

	Several external memory sources are available for the BL5340 DVK. These
	are described as follows.

	Flash Memory
	------------

	A Macronix MX25R6435FZNIL0 8MB external QSPI Flash memory part is
	incorporated for application image storage and large datasets.

	Refer to the `Macronix MX25R6435FZNIL0 datasheet`_ for further details.

	EEPROM Memory
	-------------

	A 32KB Giantec GT24C256C-2GLI-TR EEPROM is available via I2C for
	storage of infrequently updated data and small datasets.

	Refer to the `Giantec GT24C256C-2GLI-TR datasheet`_ for further details.

	External Memory
	---------------

	An on-board micro SD card slot is available for use with micro SD cards.

	Sensors
	=======

	The BL5340 DVK incorporates two sensors for user application testing.
	These are described as follows.

	Temperature, Pressure, Humidity & Air Quality Sensor
	----------------------------------------------------

	A Bosch BME680 Temperature, Pressure, Humidity & Air Quality sensor is
	available via I2C for environmental measurement applications.

	Refer to the `Bosch BME680 datasheet`_ for further details.

	3-Axis Accelerometer
	--------------------

	An ST Microelectronics LIS3DH 3-Axis Accelerometer is available via I2C
	for vibration and motion detection applications.

	Refer to the `ST Microelectronics LIS3DH datasheet`_ for further details.

	Ethernet
	========

	Cabled 10/100 Base-T Ethernet Connectivity is available via a Microchip
	ENC424J600 Ethernet controller.

	Refer to the `Microchip ENC424J600 datasheet`_ for further details.

	TFT Display & Capacitive Touch Screen Controller
	================================================

	A 2.8 inch, 240 x 320 pixel TFT display with capacitive touch
	controller is included with the BL5340 DVK for user interface
	application features.

	Refer to the `ER_TFTM028_4 datasheet`_ for a high level overview of the
	display.

	An ILI9341 TFT controller is incorporated in the TFT module and
	acts as the main controller, controlled via SPI.

	Refer to the `ILI9341 datasheet`_ for further details.

	An FT6206 Capacitive Touch Controller, controlled via I2C is
	also incorporated in the TFT module.

	Refer to the `FT6206 datasheet`_ for further details.

	Real-Time Clock
	===============

	A real-time clock is available for accurate time data availability.

	Refer to the `Microchip MCP7940N datasheet`_ for further details.

	DAC
	===

	A 10-bit Digital to Analog Converter is incorporated for generation of
	variable voltages.

	Refer to the `Microchip MCP4725 datasheet`_ for further details.

	Security components
	===================

	- Implementation Defined Attribution Unit (`IDAU`_) on the application
	core. The IDAU is implemented with the System Protection Unit and is
	used to define secure and non-secure memory maps. By default, all of
	the memory space (Flash, SRAM, and peripheral address space) is
	defined to be secure accessible only.
	- Secure boot.

	Programming and Debugging
	*************************

	The BL5340's application core supports the Armv8-M Security Extension.
	Applications built for the bl5340_dvk_cpuapp board by default
	boot in the Secure state.

	The BL5340's network core does not support the Armv8-M Security
	Extension. The IDAU may configure bus accesses by the network core to
	have Secure attribute set; the latter allows to build and run Secure
	only applications on the BL5340 module.

	Building Secure/Non-Secure Zephyr applications with Arm \|reg\| TrustZone \|reg\|
	=============================================================================

	Applications on the BL5340 module may contain a Secure and a Non-Secure
	firmware image for the application core. The Secure image can be built
	using either Zephyr or `Trusted Firmware M`_ (TF-M). Non-Secure
	firmware images are always built using Zephyr. The two alternatives are
	described below.

	.. note::

	By default the the Secure image for BL5340's application core is
	built using TF-M.

	Building the Secure firmware with TF-M
	--------------------------------------

	The process to build the Secure firmware image using TF-M and the
	Non-Secure firmware image using Zephyr requires the following steps:

	1. Build the Non-Secure Zephyr application
	for the application core using ``-DBOARD=bl5340_dvk_cpuapp_ns``.
	To invoke the building of TF-M the Zephyr build system requires the
	Kconfig option ``BUILD_WITH_TFM`` to be enabled, which is done by
	default when building Zephyr as a Non-Secure application.
	The Zephyr build system will perform the following steps automatically:

	* Build the Non-Secure firmware image as a regular Zephyr application
	* Build a TF-M (secure) firmware image
	* Merge the output image binaries together
	* Optionally build a bootloader image (MCUboot)

	.. note::

	Depending on the TF-M configuration, an application DTS overlay may
	be required, to adjust the Non-Secure image Flash and SRAM starting
	address and sizes.

	2. Build the application firmware for the network core using
	``-DBOARD=bl5340_dvk_cpunet``.

	Building the Secure firmware using Zephyr
	-----------------------------------------

	The process to build the Secure and the Non-Secure firmware images
	using Zephyr requires the following steps:

	1. Build the Secure Zephyr application for the application core
	using ``-DBOARD=bl5340_dvk_cpuapp`` and
	``CONFIG_TRUSTED_EXECUTION_SECURE=y`` and ``CONFIG_BUILD_WITH_TFM=n``
	in the application project configuration file.
	2. Build the Non-Secure Zephyr application for the application core
	using ``-DBOARD=bl5340_dvk_cpuapp_ns``.
	3. Merge the two binaries together.
	4. Build the application firmware for the network core using
	``-DBOARD=bl5340_dvk_cpunet``.

	When building a Secure/Non-Secure application for the BL5340's
	application core, the Secure application will have to set the IDAU
	(SPU) configuration to allow Non-Secure access to all CPU resources
	utilized by the Non-Secure application firmware. SPU configuration
	shall take place before jumping to the Non-Secure application.

	Building a Secure only application
	==================================

	Build the Zephyr app in the usual way (see :ref:`build_an_application`
	and :ref:`application_run`), using ``-DBOARD=bl5340_dvk_cpuapp`` for
	the firmware running on the BL5340's application core, and using
	``-DBOARD=bl5340_dvk_cpunet`` for the firmware running
	on the BL5340's network core.

	Flashing
	========

	Follow the instructions in the :ref:`nordic_segger` page to install
	and configure all the necessary software. Further information can be
	found in :ref:`nordic_segger_flashing`. Then you can build and flash
	applications as usual (:ref:`build_an_application` and
	:ref:`application_run` for more details).

	.. warning::

	The BL5340 has a flash read-back protection feature. When flash
	read-back protection is active, you will need to recover the chip
	before reflashing. If you are flashing with
	:ref:`west <west-build-flash-debug>`, run this command for more
	details on the related ``--recover`` option:

	.. code-block:: console

	west flash -H -r nrfjprog --skip-rebuild

	.. note::

	Flashing and debugging applications on the BL5340 DVK requires
	upgrading the nRF Command Line Tools to version 10.12.0 or newer.
	Further information on how to install the nRF Command Line Tools can
	be found in :ref:`nordic_segger_flashing`.

	Here is an example for the :ref:`hello_world` application running on the
	BL5340's application core.

	First, run your favorite terminal program to listen for output.

	.. code-block:: console

	$ minicom -D <tty_device> -b 115200

	Replace :code:`<tty_device>` with the port where the BL5340 DVK board
	can be found. For example, under Linux, :code:`/dev/ttyACM0`.

	Then build and flash the application in the usual way.

	.. zephyr-app-commands::
	:zephyr-app: samples/hello_world
	:board: bl5340_dvk_cpuapp
	:goals: build flash

	Debugging
	=========

	Refer to the :ref:`nordic_segger` page to learn about debugging
	boards with a Segger IC.

	Testing Bluetooth on the BL5340 DVK
	***********************************
	Many of the Bluetooth examples will work on the BL5340 DVK.
	Try them out:

	* :ref:`ble_peripheral`
	* :ref:`bluetooth-eddystone-sample`
	* :ref:`bluetooth-ibeacon-sample`

	References
	**********

	.. target-notes::

	.. _IDAU:
	https://developer.arm.com/docs/100690/latest/attribution-units-sau-and-idau
	.. _BL5340 homepage: https://www.lairdconnect.com/wireless-modules/bluetooth-modules/bluetooth-5-modules/bl5340-series-multi-core-bluetooth-52-802154-nfc-modules
	.. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com
	.. _TI TCA9538 datasheet: https://www.ti.com/lit/gpn/TCA9538
	.. _Macronix MX25R6435FZNIL0 datasheet: https://www.macronix.com/Lists/Datasheet/Attachments/8868/MX25R6435F,%20Wide%20Range,%2064Mb,%20v1.6.pdf
	.. _Giantec GT24C256C-2GLI-TR datasheet: http://www.giantec-semi.com/Upload/datasheet/CU/GT24C256C_DS_Cu.pdf
	.. _Bosch BME680 datasheet: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme680-ds001.pdf
	.. _ST Microelectronics LIS3DH datasheet: https://www.st.com/resource/en/datasheet/lis3dh.pdf
	.. _Microchip ENC424J600 datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/39935c.pdf
	.. _ER_TFTM028_4 datasheet: https://www.buydisplay.com/download/manual/ER-TFTM028-4_Datasheet.pdf
	.. _ILI9341 datasheet: https://www.buydisplay.com/download/ic/ILI9341.pdf
	.. _FT6206 datasheet: https://www.buydisplay.com/download/ic/FT6206.pdf
	.. _Microchip MCP7940N datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/20005010H.pdf
	.. _Microchip MCP4725 datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/22039d.pdf
	.. _Trusted Firmware M: https://www.trustedfirmware.org/projects/tf-m/