..  Copyright (c) 2014-present PlatformIO <contact@platformio.org>
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
       http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

.. _board_nordicnrf52_electronut_papyr:

ElectronutLabs Papyr
====================

.. contents::

Hardware
--------

Platform :ref:`platform_nordicnrf52`: The nRF52 Series are built for speed to carry out increasingly complex tasks in the shortest possible time and return to sleep, conserving precious battery power. They have a Cortex-M4F processor which makes them quite capable Bluetooth Smart SoCs.

.. list-table::

  * - **Microcontroller**
    - NRF52840
  * - **Frequency**
    - 64MHz
  * - **Flash**
    - 1MB
  * - **RAM**
    - 256KB
  * - **Vendor**
    - `ElectronutLabs <https://docs.electronut.in/papyr?utm_source=platformio.org&utm_medium=docs>`__


Configuration
-------------

Please use ``electronut_papyr`` ID for :ref:`projectconf_env_board` option in :ref:`projectconf`:

.. code-block:: ini

  [env:electronut_papyr]
  platform = nordicnrf52
  board = electronut_papyr

You can override default ElectronutLabs Papyr settings per build environment using
``board_***`` option, where ``***`` is a JSON object path from
board manifest `electronut_papyr.json <https://github.com/platformio/platform-nordicnrf52/blob/master/boards/electronut_papyr.json>`_. For example,
``board_build.mcu``, ``board_build.f_cpu``, etc.

.. code-block:: ini

  [env:electronut_papyr]
  platform = nordicnrf52
  board = electronut_papyr

  ; change microcontroller
  board_build.mcu = nrf52840

  ; change MCU frequency
  board_build.f_cpu = 64000000L


Uploading
---------
ElectronutLabs Papyr supports the following uploading protocols:

* ``blackmagic``
* ``cmsis-dap``
* ``jlink``
* ``nrfjprog``
* ``stlink``

Default protocol is ``blackmagic``

You can change upload protocol using :ref:`projectconf_upload_protocol` option:

.. code-block:: ini

  [env:electronut_papyr]
  platform = nordicnrf52
  board = electronut_papyr

  upload_protocol = blackmagic

Debugging
---------

:ref:`piodebug` - "1-click" solution for debugging with a zero configuration.

.. warning::
    You will need to install debug tool drivers depending on your system.
    Please click on compatible debug tool below for the further
    instructions and configuration information.

You can switch between debugging :ref:`debugging_tools` using
:ref:`projectconf_debug_tool` option in :ref:`projectconf`.

ElectronutLabs Papyr has on-board debug probe and **IS READY** for debugging. You don't need to use/buy external debug probe.

.. list-table::
  :header-rows:  1

  * - Compatible Tools
    - On-board
    - Default
  * - :ref:`debugging_tool_blackmagic`
    - Yes
    - Yes
  * - :ref:`debugging_tool_cmsis-dap`
    - 
    - 
  * - :ref:`debugging_tool_jlink`
    - 
    - 
  * - :ref:`debugging_tool_stlink`
    - 
    - 

Frameworks
----------
.. list-table::
    :header-rows:  1

    * - Name
      - Description

    * - :ref:`framework_zephyr`
      - Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures