| .. _nrf52840_pca10090: |
| |
| nRF52840-PCA10090 |
| ################# |
| |
| Overview |
| ******** |
| |
| The nRF52840 SoC on the nRF9160 DK (PCA10090) hardware provides support for the |
| Nordic Semiconductor nRF52840 ARM Cortex-M4F CPU and the following devices: |
| |
| * CLOCK |
| * FLASH |
| * :abbr:`GPIO (General Purpose Input Output)` |
| * :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:`UART (Universal asynchronous receiver-transmitter)` |
| * :abbr:`WDT (Watchdog Timer)` |
| |
| The nRF52840 SoC does not have any connection to the any of the LEDs, |
| buttons, switches, and Arduino pin headers on the PCA10090 board. It is, |
| however, possible to route some of the pins of the nRF52840 SoC to the nRF9160 |
| SiP. |
| |
| More information about the board can be found at |
| the `Nordic Low power cellular IoT`_ website. |
| The `Nordic Semiconductor documentation library`_ |
| contains the processor's information and the datasheet. |
| |
| Hardware |
| ******** |
| |
| The nRF9160 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 nrf52840_pca10090 board configuration supports the following |
| hardware features: |
| |
| +-----------+------------+----------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+======================+ |
| | CLOCK | on-chip | clock_control | |
| +-----------+------------+----------------------+ |
| | FLASH | on-chip | flash | |
| +-----------+------------+----------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+----------------------+ |
| | 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 | |
| +-----------+------------+----------------------+ |
| | UART | on-chip | serial | |
| +-----------+------------+----------------------+ |
| | WDT | on-chip | watchdog | |
| +-----------+------------+----------------------+ |
| |
| Programming and Debugging |
| ************************* |
| |
| Applications for the ``nrf52840_pca10090`` board configuration can be |
| built and flashed in the usual way (see :ref:`build_an_application` |
| and :ref:`application_run` for more details). |
| |
| Make sure that the PROG/DEBUG switch on the DK is set to nRF52. |
| |
| 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). |
| |
| Remember to set the PROG/DEBUG switch on the DK to nRF52. |
| |
| See the following 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 nRF52840 SoC is connected |
| to. Usually, under Linux it will be ``/dev/ttyACM1``. The ``/dev/ttyACM0`` |
| port is connected to the nRF9160 SiP on the board. |
| |
| Then build and flash the application in the usual way. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: nrf52840_pca10090 |
| :goals: build flash |
| |
| Debugging |
| ========= |
| |
| Refer to the :ref:`nordic_segger` page to learn about debugging Nordic boards |
| with a Segger IC. |
| |
| Remember to set the PROG/DEBUG switch on the DK to nRF52. |
| |
| Board controller firmware |
| ************************* |
| |
| The board controller firmware is a small snippet of code that takes care of |
| routing specific pins on nRF9160 SiP to different components on the board, |
| such as LEDs, switches, and specific nRF52840 SoC pins. |
| |
| When compiling a project for nrf52840_pca10090, the board controller firmware |
| will be compiled and run automatically after the Kernel has been initialized. |
| |
| By default, the board controller firmware will route the following: |
| |
| +-----------------+----------------------------------+ |
| | Component | Routed to | |
| +=================+==================================+ |
| | nRF9160 UART0 | VCOM0 | |
| +-----------------+----------------------------------+ |
| | nRF9160 UART1 | VCOM2 | |
| +-----------------+----------------------------------+ |
| | Leds 1-4 | physical LEDs | |
| +-----------------+----------------------------------+ |
| | Buttons 1-2 | physical buttons | |
| +-----------------+----------------------------------+ |
| | Switches 1-2 | physical switches | |
| +-----------------+----------------------------------+ |
| | MCU Interface 0 | Arduino pin headers | |
| +-----------------+----------------------------------+ |
| | MCU Interface 1 | Trace interface | |
| +-----------------+----------------------------------+ |
| | MCU Interface 2 | COEX interface | |
| +-----------------+----------------------------------+ |
| |
| It is possible to configure the behavior of the board controller firmware by |
| using Kconfig and editing its options under "Board options". |
| |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| .. _Nordic Low power cellular IoT: https://www.nordicsemi.com/Products/Low-power-cellular-IoT |
| .. _Nordic Semiconductor documentation library: https://www.nordicsemi.com/DocLib |
| .. _J-Link Software and documentation pack: https://www.segger.com/jlink-software.html |
| |