| .. _raytac_mdbt50q_db_40_nrf52840: |
| |
| Raytac MDBT50Q-DB-40 |
| #################### |
| |
| Overview |
| ******** |
| |
| The Raytac MDBT50Q-DB-40 hardware provides support for the |
| Nordic Semiconductor nRF52840 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 and 802.15.4) |
| * :abbr:`RTC (nRF RTC System Clock)` |
| * Segger RTT (RTT Console) |
| * :abbr:`SPI (Serial Peripheral Interface)` |
| * :abbr:`UART (Universal asynchronous receiver-transmitter)` |
| * :abbr:`USB (Universal Serial Bus)` |
| * :abbr:`WDT (Watchdog Timer)` |
| |
| .. figure:: img/mdbt50q_db_40.jpg |
| :width: 442px |
| :align: center |
| :alt: MDBT50Q-DB-40 |
| |
| More information about the board can be found at the `MDBT50Q-DB-40 website`_. |
| The `MDBT50Q-DB-40 Specification`_ contains the demo board's datasheet. |
| The `MDBT50Q-DB-40 Schematic`_ contains the demo board's schematic. |
| |
| Hardware |
| ******** |
| - Module Demo Board build by MDBT50Q-1MV2 |
| - Nordic nRF52840 SoC Solution Version: 2 |
| - A recommnded 3rd-party module by Nordic Semiconductor. |
| - BT5.2&BT5.1&BT5 Bluetooth Specification Cerified |
| - Supports BT5 Long Range Features |
| - Cerifications: FCC, IC, CE, Telec(MIC), KC, SRRC, NCC, RCM, WPC |
| - 32-bit ARM® Cortex™ M4F CPU |
| - 1MB Flash Memory/256kB RAM |
| - RoHs & Reach Compiant. |
| - 48 GPIO |
| - Chip Antenna |
| - Interfaces: SPI, UART, I2C, I2S, PWM, ADC, NFC, and USB |
| - Highly flexible multiprotocol SoC ideally suited for Bluetooth® Low Energy, ANT+, Zigbee, Thread (802.15.4) ultra low-power wireless applications. |
| - 3 User LEDs |
| - 4 User buttons |
| - 1 Mini USB connector for power supply and USB communication |
| - SWD connector for FW programing |
| - J-Link interface for FW programing |
| - UART interface for UART communication |
| |
| Supported Features |
| ================== |
| |
| The raytac_mdbt50q_db_40/nrf52840 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, | |
| | | | ieee802154 | |
| +-----------+------------+----------------------+ |
| | RTC | on-chip | system clock | |
| +-----------+------------+----------------------+ |
| | RTT | Segger | console | |
| +-----------+------------+----------------------+ |
| | SPI(M/S) | on-chip | spi | |
| +-----------+------------+----------------------+ |
| | QSPI(M) | on-chip | qspi | |
| +-----------+------------+----------------------+ |
| | UART | on-chip | serial | |
| +-----------+------------+----------------------+ |
| | USB | on-chip | usb | |
| +-----------+------------+----------------------+ |
| | WDT | on-chip | watchdog | |
| +-----------+------------+----------------------+ |
| |
| Other hardware features have not been enabled yet for this board. |
| See `MDBT50Q-DB-40 website`_ and `MDBT50Q-DB-40 Specification`_ |
| for a complete list of Raytac MDBT50Q-DB-40 board hardware features. |
| |
| Connections and IOs |
| =================== |
| |
| LED |
| --- |
| |
| * LED1 (green) = P0.13 |
| * LED2 (red) = P0.14 |
| * LED3 (blue) = P0.15 |
| |
| Push buttons |
| ------------ |
| |
| * BUTTON1 = SW1 = P0.11 |
| * BUTTON2 = SW2 = P0.12 |
| * BUTTON3 = SW3 = P0.24 |
| * BUTTON4 = SW4 = P0.25 |
| |
| UART |
| ---- |
| * RXD = P0.08 |
| * TXD = P0.06 |
| * RTS = P0.05 |
| * CTS = P0.07 |
| |
| Programming and Debugging |
| ************************* |
| |
| Applications for the ``raytac_mdbt50q_db_40/nrf52840`` board configuration can be |
| built, flashed, and debugged in the usual way. See :ref:`build_an_application` and |
| :ref:`application_run` for more details on building and running. |
| |
| .. note:: |
| Flashing and Debugging Zephyr onto the raytac_mdbt50q_db_40/nrf52840 board |
| requires an external J-Link programmer. The programmer is attached to the J1 |
| or J9 SWD connector. |
| |
| 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. |
| |
| Use a USB to TTL converter to connect the computer and raytac_mdbt50q_db_40/nrf52840 |
| J10 connector. Then 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 USB to TTL converter |
| can be found. For example, under Linux, :code:`/dev/ttyUSB0`. |
| |
| Then build and flash the application in the usual way. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: raytac_mdbt50q_db_40/nrf52840 |
| :goals: build flash |
| |
| Debugging |
| ========= |
| |
| The ``raytac_mdbt50q_db_40/nrf52840`` board does not have an on-board-J-Link debug IC, |
| however, instructions from the :ref:`nordic_segger` page also apply to this board. |
| Use the Debug out connector of nRF52x DK to connect to the J1 connector, and use SEGGER |
| J-Link OB IF to debug. |
| |
| Testing the LEDs and buttons in the MDBT50Q-DB-40 |
| ************************************************* |
| |
| 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/raytac/mdbt50q_db_40/raytac_mdbt50q_db_40_nrf52840.dts`. |
| |
| Selecting the pins |
| ================== |
| |
| Pins can be configured in the board pinctrl file. To see the available mappings, |
| open the `MDBT50Q-DB-40 Specification`_, chapter 2.5 'Pin Assignment'. |
| Select the pins marked 'General-purpose I/O'. Note that pins marked as 'low-frequency I/O |
| only' can only be used in under-10KHz applications. They are not suitable for SPI, I2C, |
| UART, and PWM. |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| |
| .. _MDBT50Q-DB-40 website: |
| https://www.raytac.com/product/ins.php?index_id=81 |
| .. _MDBT50Q-DB-40 Specification: |
| https://www.raytac.com/download/index.php?index_id=43 |
| .. _MDBT50Q-DB-40 Schematic: |
| https://www.raytac.com/upload/catalog_b/134ade06b5db3dd5803d27c5b17f22f3.jpg |
| .. _J-Link Software and documentation pack: |
| https://www.segger.com/jlink-software.html |
