| .. _nrf52840_pca10056: |
| |
| nRF52840-PCA10056 |
| ################# |
| |
| Overview |
| ******** |
| |
| Zephyr applications use the nrf52840_pca10056 board configuration |
| to run on the nRF52840 Preview Development Kit (PCA10056) hardware. It provides |
| support for the Nordic Semiconductor nRF52840 ARM Cortex-M4F CPU and |
| the following devices: |
| |
| * :abbr:`NVIC (Nested Vectored Interrupt Controller)` |
| * :abbr:`RTC (nRF RTC System Clock)` |
| * UART |
| * GPIO |
| * FLASH |
| * RADIO (Bluetooth Low Energy) |
| * Segger RTT (RTT Console) |
| |
| .. figure:: img/nrf52840_pca10056.jpg |
| :width: 442px |
| :align: center |
| :alt: nRF52840 PCA10056 Preview DK |
| |
| nRF52840 PCA10056 Preview DK (Credit: Nordic Semi) |
| |
| More information about the board can be found at the |
| `nRF52840 PDK website`_. The `Nordic Semiconductor Infocenter`_ |
| contains the processor's information and the datasheet. |
| |
| Hardware |
| ******** |
| |
| nRF52840 PDK 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 nrf52840_pca10056 board configuration supports the following |
| hardware features: |
| |
| +-----------+------------+----------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+======================+ |
| | NVIC | on-chip | nested vectored | |
| | | | interrupt controller | |
| +-----------+------------+----------------------+ |
| | RTC | on-chip | system clock | |
| +-----------+------------+----------------------+ |
| | UART | on-chip | serial port | |
| +-----------+------------+----------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+----------------------+ |
| | FLASH | on-chip | flash | |
| +-----------+------------+----------------------+ |
| | RADIO | on-chip | Bluetooth | |
| +-----------+------------+----------------------+ |
| | RTT | on-chip | console | |
| +-----------+------------+----------------------+ |
| |
| Other hardware features are not supported by the Zephyr kernel. |
| See `nRF52840 PDK website`_ and `Nordic Semiconductor Infocenter`_ |
| for a complete list of nRF52840 Development Kit board hardware features. |
| |
| Connections and IOs |
| =================== |
| |
| LED |
| --- |
| |
| * LED1 (green) = P0.13 |
| * LED2 (green) = P0.14 |
| * LED3 (green) = P0.15 |
| * LED4 (green) = P0.16 |
| |
| Push buttons |
| ------------ |
| |
| * BUTTON1 = SW1 = P0.11 |
| * BUTTON2 = SW2 = P0.12 |
| * BUTTON3 = SW3 = P0.24 |
| * BUTTON4 = SW4 = P0.25 |
| * BOOT = SW5 = boot/reset |
| |
| Programming and Debugging |
| ************************* |
| |
| Flashing |
| ======== |
| |
| Follow the instructions in the :ref:`nordic_segger` page to install and configure |
| all the necessary software. |
| |
| This tutorial uses the sample application |
| shell :file:`$ZEPHYR_BASE/samples/subsys/shell/shell`, and uses the information that can be found in |
| :ref:`nordic_segger_flashing`. |
| |
| #. To build the Zephyr kernel, enter: |
| |
| .. code-block:: console |
| |
| $ cd $ZEPHYR_BASE |
| $ make -C samples/subsys/shell/shell BOARD=nrf52840_pca10056 |
| |
| #. Connect the micro-USB cable to the nRF52840 PDK and to your computer. |
| |
| #. Erase the flash memory in the nRF52840: |
| |
| .. code-block:: console |
| |
| $ nrfjprog --eraseall -f nrf52 |
| |
| #. Flash the application using the nrfjprog tool: |
| |
| .. code-block:: console |
| |
| $ nrfjprog --program outdir/zephyr.hex -f nrf52 |
| |
| #. 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 |
| nRF52840 PDK can be found. For example, under Linux, |
| :code:`/dev/ttyACM0`. |
| |
| The ``-b`` option sets baudrate ignoring the value |
| from config. |
| |
| #. Press the Reset button and you should see the output of |
| shell application in your terminal. |
| |
| 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 nRF52840 PDK |
| ************************************************ |
| |
| 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 :file:`boards/arm/nrf52840_pca10056/board.h`. |
| |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| |
| .. _nRF52840 PDK website: http://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK |
| .. _Nordic Semiconductor Infocenter: http://infocenter.nordicsemi.com/ |
| .. _J-Link Software and documentation pack: https://www.segger.com/jlink-software.html |
| |