160 lines
4.7 KiB
ReStructuredText
160 lines
4.7 KiB
ReStructuredText
.. _nrf51dk_nrf51422:
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nRF51 DK
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########
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Overview
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********
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The nRF51 Development Kit (PCA10028) hardware provides support for the Nordic
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Semiconductor nRF51822 ARM Cortex-M0 CPU and the following devices:
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* :abbr:`ADC (Analog to Digital Converter)`
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* CLOCK
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* FLASH
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* :abbr:`GPIO (General Purpose Input Output)`
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* :abbr:`I2C (Inter-Integrated Circuit)`
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* :abbr:`NVIC (Nested Vectored Interrupt Controller)`
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* RADIO (Bluetooth Low Energy)
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* :abbr:`RTC (nRF RTC System Clock)`
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* Segger RTT (RTT Console)
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* :abbr:`SPI (Serial Peripheral Interface)`
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* :abbr:`UART (Universal asynchronous receiver-transmitter)`
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* :abbr:`WDT (Watchdog Timer)`
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.. figure:: img/nrf51dk_nrf51822.jpg
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:align: center
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:alt: nRF51 DK
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nRF51 DK (Credit: Nordic Semiconductor)
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More information about the board can be found at the
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`nRF51 DK website`_. The `nRF51 Development Kit User Guide`_
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contains the processor's information and the datasheet.
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Hardware
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********
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nRF51 DK has two external oscillators. The frequency of
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the slow clock is 32.768 kHz. The frequency of the main clock
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is 16 MHz.
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Supported Features
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==================
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The nrf51dk/nrf51822 board configuration supports the following nRF51
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hardware features:
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+-----------+------------+----------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+======================+
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| ADC | on-chip | adc |
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+-----------+------------+----------------------+
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| CLOCK | on-chip | clock_control |
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+-----------+------------+----------------------+
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| FLASH | on-chip | flash |
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+-----------+------------+----------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+----------------------+
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| I2C(M) | on-chip | i2c |
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+-----------+------------+----------------------+
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| NVIC | on-chip | arch/arm |
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+-----------+------------+----------------------+
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| RADIO | on-chip | Bluetooth |
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+-----------+------------+----------------------+
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| RTC | on-chip | system clock |
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+-----------+------------+----------------------+
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| RTT | Segger | console |
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+-----------+------------+----------------------+
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| SPI(M/S) | on-chip | spi |
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+-----------+------------+----------------------+
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| UART | on-chip | serial |
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+-----------+------------+----------------------+
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| WDT | on-chip | watchdog |
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+-----------+------------+----------------------+
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Other hardware features have not been enabled yet for this board.
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See `nRF51 DK website`_ and `nRF51 Development Kit User Guide`_
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for a complete list of nRF51 Development Kit board hardware features.
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Connections and IOs
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===================
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LED
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---
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* LED1 (green) = P0.21
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* LED2 (green) = P0.22
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* LED3 (green) = P0.23
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* LED4 (green) = P0.24
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Push buttons
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------------
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* BUTTON1 = SW1 = P0.17
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* BUTTON2 = SW2 = P0.18
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* BUTTON3 = SW3 = P0.19
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* BUTTON4 = SW4 = P0.20
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* BOOT = SW5 = boot/reset
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Programming and Debugging
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*************************
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Flashing
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========
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Follow the instructions in the :ref:`nordic_segger` page to install
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and configure all the necessary software. Further information can be
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found in :ref:`nordic_segger_flashing`. Then build and flash
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applications as usual (see :ref:`build_an_application` and
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:ref:`application_run` for more details).
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Here is an example for the :zephyr:code-sample:`hello_world` application.
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First, run your favorite terminal program to listen for output.
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.. code-block:: console
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$ minicom -D <tty_device> -b 115200
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Replace :code:`<tty_device>` with the port where the board nRF51 DK
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can be found. For example, under Linux, :code:`/dev/ttyACM0`.
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Then build and flash the application in the usual way.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: nrf51dk/nrf51822
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:goals: build flash
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Debugging
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=========
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Refer to the :ref:`nordic_segger` page to learn about debugging Nordic boards with a
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Segger IC.
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Testing the LEDs and buttons in the nRF51 DK
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********************************************
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There are 2 samples that allow you to test that the buttons (switches) and LEDs on
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the board are working properly with Zephyr:
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.. code-block:: console
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samples/basic/blinky
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samples/basic/button
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You can build and flash the examples to make sure Zephyr is running correctly on
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your board. The button and LED definitions can be found in
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:zephyr_file:`boards/nordic/nrf51dk/nrf51dk_nrf51822.dts`.
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References
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**********
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.. target-notes::
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.. _nRF51 DK website: https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF51-DK
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.. _nRF51 Development Kit User Guide: https://docs.nordicsemi.com/bundle/nRF51-Series-DK/resource/nRF51_Development_Kit_User_Guide_v1.2.pdf
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