.. _we_proteus3ev_nrf52840:

Würth Elektronik Proteus-III-EV
###############################

Overview
********

The Proteus-III-EV (evaluation board) hardware provides support
for the Proteus-III radio module that uses the Nordic Semiconductor
nRF52840 ARM Cortex-M4F CPU and the following devices:

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

.. figure:: img/we_proteus3ev_nrf52840.jpg
     :align: center
     :alt: Proteus-III EV

     Proteus-III EV (Credit: Würth Elektronik)

More information about the radio module can be found the Würth Elektronik
web page https://www.we-online.com/katalog/de/PROTEUS-III .


Hardware
********

Proteus-III radio module provides only the internal oscillators. The
frequency of the slow clock is 32.768 kHz. The frequency of the main
clock is 32 MHz.

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

The we_proteus3ev_nrf52840 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             |
+-----------+------------+----------------------+
| PWM       | on-chip    | pwm                  |
+-----------+------------+----------------------+
| RADIO     | on-chip    | Bluetooth,           |
|           |            | ieee802154           |
+-----------+------------+----------------------+
| RTC       | on-chip    | system clock         |
+-----------+------------+----------------------+
| RTT       | Segger     | console              |
+-----------+------------+----------------------+
| SPI(M/S)  | on-chip    | spi                  |
+-----------+------------+----------------------+
| UART      | on-chip    | serial               |
+-----------+------------+----------------------+
| WDT       | on-chip    | watchdog             |
+-----------+------------+----------------------+

Other hardware features are not supported by the Zephyr kernel.

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

LED
---

* LED1 = P0.00
* LED2 = P0.01

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

* BUTTON1 = SW1 = P0.03

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

Applications for the ``we_proteus3ev_nrf52840`` board configuration can be
built, flashed, and debugged in the usual way. See
:ref:`build_an_application` and :ref:`application_run` for more details on
building and running.

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 build and flash
applications as usual (see :ref:`build_an_application` and
:ref:`application_run` for more details).

Here is an example for the :ref:`hello_world` application.

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 board Proteus-III-EV
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: we_proteus3ev_nrf52840
   :goals: build flash

Debugging
=========

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

Testing the LEDs and buttons in the Proteus-III-EV
**************************************************

There are 2 samples that allow you to test that the buttons (switches) and
LEDs on the board are working properly with Zephyr:

.. code-block:: console

   samples/basic/blinky
   samples/basic/button

You can build and flash the examples to make sure Zephyr is running correctly
on your board. The button and LED definitions can be found in
:zephyr_file:`boards/arm/we_proteus3ev_nrf52840/we_proteus3ev_nrf52840.dts`.

References
**********

.. target-notes::

.. _Proteus-III radio module website: https://www.we-online.com/katalog/de/PROTEUS-III
.. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com
.. _J-Link Software and documentation pack: https://www.segger.com/jlink-software.html
.. _nRF52840 Product Specification: http://infocenter.nordicsemi.com/pdf/nRF52840_PS_v1.0.pdf