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.. _nrf52dk_nrf52832:
nRF52 DK
########
Overview
********
The nRF52 Development Kit (PCA10040) hardware provides
support for the Nordic Semiconductor nRF52832 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)
* :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/nrf52dk_nrf52832.jpg
:width: 442px
:align: center
:alt: nRF52 DK
nRF52 DK (Credit: Nordic Semiconductor)
More information about the board can be found at the
`nRF52 DK website`_. The `Nordic Semiconductor Infocenter`_
contains the processor's information and the datasheet.
Hardware
********
nRF52 DK has two external oscillators. The frequency of
the slow clock is 32.768 kHz. The frequency of the main clock
is 32 MHz.
Supported Features
==================
The nrf52dk_nrf52832 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 |
+-----------+------------+----------------------+
| 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 have not been enabled yet for this board.
See `nRF52 DK website`_ and `Nordic Semiconductor Infocenter`_
for a complete list of nRF52 Development Kit board hardware features.
Connections and IOs
===================
LED
---
* LED1 (green) = P0.17
* LED2 (green) = P0.18
* LED3 (green) = P0.19
* LED4 (green) = P0.20
* LD5 (red/green) = OB LED 1/2
Push buttons
------------
* BUTTON1 = SW1 = P0.13
* BUTTON2 = SW2 = P0.14
* BUTTON3 = SW3 = P0.15
* BUTTON4 = SW4 = P0.16
* BOOT = SW5 = boot/reset
External Connectors
-------------------
J-Link Prog Connector
+-------+--------------+
| PIN # | Signal Name |
+=======+==============+
| 1 | VDD |
+-------+--------------+
| 2 | IMCU_TMSS |
+-------+--------------+
| 3 | GND |
+-------+--------------+
| 4 | IMCU_TCKS |
+-------+--------------+
| 5 | V5V |
+-------+--------------+
| 6 | IMCU_TDOS |
+-------+--------------+
| 7 | Cut off |
+-------+--------------+
| 8 | IMCU_TDIS |
+-------+--------------+
| 9 | Cut off |
+-------+--------------+
| 10 | IMCU_RESET |
+-------+--------------+
Debug IN
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | VDD | N/A |
+-------+--------------+-------------------------+
| 2 | SWDIO | SWDIO |
+-------+--------------+-------------------------+
| 3 | GND | N/A |
+-------+--------------+-------------------------+
| 4 | SWDCLK | SWDCLK |
+-------+--------------+-------------------------+
| 5 | GND | N/A |
+-------+--------------+-------------------------+
| 6 | P0.18 | P0.18 / TRACEDATA[0] / |
| | | SWO |
+-------+--------------+-------------------------+
| 7 | Cut off | N/A |
+-------+--------------+-------------------------+
| 8 | Cut off | N/A |
+-------+--------------+-------------------------+
| 9 | GND | N/A |
+-------+--------------+-------------------------+
| 10 | P0.21 | P0.21 / RESET |
+-------+--------------+-------------------------+
Debug OUT
+-------+----------------+
| PIN # | Signal Name |
+=======+================+
| 1 | EXT_VTG |
+-------+----------------+
| 2 | EXT_SWDIO |
+-------+----------------+
| 3 | GND |
+-------+----------------+
| 4 | EXT_SWDCLK |
+-------+----------------+
| 5 | GND |
+-------+----------------+
| 6 | EXT_SWO |
| | |
+-------+----------------+
| 7 | Cut off |
+-------+----------------+
| 8 | Cut off |
+-------+----------------+
| 9 | EXT_GND_DETECT |
+-------+----------------+
| 10 | EXT_RESET |
+-------+----------------+
Shield Debug and Current measurement
+-------+----------------+
| PIN # | Signal Name |
+=======+================+
| 1 | VDD_nRF |
+-------+----------------+
| 2 | VDD |
+-------+----------------+
| 3 | SH_VTG |
+-------+----------------+
| 4 | SH_SWDIO |
+-------+----------------+
| 5 | SH_SWDCLK |
+-------+----------------+
| 6 | SH_SWO |
+-------+----------------+
| 7 | SH_RESET |
+-------+----------------+
| 8 | SH_GND_DETECT |
+-------+----------------+
Auxiliary
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | P0.00 | P0.00 / XL1 |
+-------+--------------+-------------------------+
| 2 | P0.01 | P0.01 / XL2 |
+-------+--------------+-------------------------+
| 3 | P0.21 | P0.21 / RESET |
+-------+--------------+-------------------------+
| 4 | P0.05_C | P0.05 / AIN3 |
+-------+--------------+-------------------------+
| 5 | P0.06_C | P0.06 |
+-------+--------------+-------------------------+
| 6 | P0.07_C | P0.07 |
+-------+--------------+-------------------------+
| 7 | P0.08_C | P0.08 |
+-------+--------------+-------------------------+
| 8 | P0.09 | P0.09 / NFC1 |
+-------+--------------+-------------------------+
| 9 | P0.10 | P0.10 / NFC2 |
+-------+--------------+-------------------------+
Arduino Headers
---------------
P1/P7 Power
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | VDD | N/A |
+-------+--------------+-------------------------+
| 2 | VDD | N/A |
+-------+--------------+-------------------------+
| 3 | RESET | P0.21 / RESET |
+-------+--------------+-------------------------+
| 4 | VDD | N/A |
+-------+--------------+-------------------------+
| 5 | V5V | N/A |
+-------+--------------+-------------------------+
| 6 | GND | N/A |
+-------+--------------+-------------------------+
| 7 | GND | N/A |
+-------+--------------+-------------------------+
| 8 | VIN | N/A |
+-------+--------------+-------------------------+
P2/P8 Analog in
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | A0 | P0.03 / AIN1 |
+-------+--------------+-------------------------+
| 2 | A1 | P0.04 / AIN2 |
+-------+--------------+-------------------------+
| 3 | A2 | P0.28 / AIN4 |
+-------+--------------+-------------------------+
| 4 | A3 | P0.29 / AIN5 |
+-------+--------------+-------------------------+
| 5 | A4 | P0.30 / AIN6 |
+-------+--------------+-------------------------+
| 6 | A5 | P0.31 / AIN7 |
+-------+--------------+-------------------------+
P3/P9 Digital I/O
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | D0 (RX) | P0.11 |
+-------+--------------+-------------------------+
| 2 | D1 (TX) | P0.12 |
+-------+--------------+-------------------------+
| 3 | D2 | P0.13 |
+-------+--------------+-------------------------+
| 4 | D3 | P0.14 / TRACEDATA[3] |
+-------+--------------+-------------------------+
| 5 | D4 | P0.15 / TRACEDATA[2] |
+-------+--------------+-------------------------+
| 6 | D5 | P0.16 / TRACEDATA[1] |
+-------+--------------+-------------------------+
| 7 | D6 | P0.17 |
+-------+--------------+-------------------------+
| 8 | D7 | P0.18 / TRACEDATA[3] / |
| | | SWO |
+-------+--------------+-------------------------+
P4/P10 Digital I/O
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | D8 | P0.19 |
+-------+--------------+-------------------------+
| 2 | D9 | P0.20 / TRACECLK |
+-------+--------------+-------------------------+
| 3 | D10 (SS) | P0.22 |
+-------+--------------+-------------------------+
| 4 | D11 (MOSI) | P0.23 |
+-------+--------------+-------------------------+
| 5 | D12 (MISO) | P0.24 |
+-------+--------------+-------------------------+
| 6 | D13 (SCK) | P0.25 |
+-------+--------------+-------------------------+
| 7 | GND | N/A |
+-------+--------------+-------------------------+
| 8 | AREF | P0.02 / AIN0 |
+-------+--------------+-------------------------+
| 9 | SDA | P0.26 |
+-------+--------------+-------------------------+
| 10 | SCL | P0.27 |
+-------+--------------+-------------------------+
P5/P11
+-------+--------------+-------------------------+
| PIN # | Signal Name | NRF52832 Functions |
+=======+==============+=========================+
| 1 | D12 (MISO) | P0.24 |
+-------+--------------+-------------------------+
| 2 | V5V | N/A |
+-------+--------------+-------------------------+
| 3 | D13 (SCK) | P0.25 |
+-------+--------------+-------------------------+
| 4 | D11 (MOSI) | P0.23 |
+-------+--------------+-------------------------+
| 5 | RESET | N/A |
+-------+--------------+-------------------------+
| 6 | N/A | N/A |
+-------+--------------+-------------------------+
Programming and Debugging
*************************
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 nRF52 DK
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: nrf52dk_nrf52832
: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 nRF52 DK
********************************************
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/nrf52dk_nrf52832/nrf52dk_nrf52832.dts`.
References
**********
.. target-notes::
.. _nRF52 DK website: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52-DK
.. _Nordic Semiconductor Infocenter: https://infocenter.nordicsemi.com