.. _nrf51_blenano: Redbear Labs Nano ################# Overview ******** The Nano is a development board equipped with Nordic's nRF51822 Bluetooth Low Energy SOC. This board is available on `RedBear Store`_. Hardware ******** nRF51 BLE Nano has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 16 MHz. Supported Features ================== The nrf51_blenano board configuration supports the following nRF51 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 | +-----------+------------+----------------------+ Connections and IOs ==================== BLE nano pinout .. image:: ../../../../../../../../zephyr/boards/arm/nrf51_blenano/doc/img/nrf51_blenano.png :width: 500px :align: center :alt: BLE Nano DAPLink board .. image:: ../../../../../../../../zephyr/boards/arm/nrf51_blenano/doc/img/daplink.png :width: 500px :align: center :alt: DAPLink The DAPLink USB board acts as a dongle. DAPLink debug probes appear on the host computer as a USB disk. It also regulates 5V from USB to 3.3V via the onboard LDO to power Nano. More information about Nano and DAPLink can be found at the `RedBear Github`_. Programming and Debugging ************************* Applications for the ``nrf51_blenano`` board configuration can be built and flashed in the usual way (see :ref:`build_an_application` and :ref:`application_run` for more details). Flashing ======== To flash an application, you'll need to connect your BLE Nano with the DAPLink board, then attach that to your computer via USB. .. warning:: Be careful to mount the BLE Nano correctly! The side of the board with the VIN and GND pins should face **towards** the USB connector. The `RedBear Store`_ page links to a tutorial video that shows how to properly solder headers and assemble the DAPLink and BLE Nano boards. Now build and flash applications as usual. Here is an example for the :ref:`hello_world` application. .. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nrf51_blenano :goals: build flash Debugging ========= After mounting the BLE Nano on its DAPLink board as described above, you can debug an application in the usual way. Here is an example for the :ref:`hello_world` application. .. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nrf51_blenano :maybe-skip-config: :goals: debug References ********** .. target-notes:: .. _RedBear Store: https://redbear.cc/product/ble-nano-kit.html .. _RedBear Github: https://github.com/redbear/nRF5x