.. _ubx_bmd340eval_nrf52840: u-blox EVK-BMD-34/38: BMD-340-EVAL and BMD-341-EVAL ################################################### Overview ******** The BMD-340-EVAL and BMD-341-EVAL hardware provides support for the u-blox BMD-340 and BMD-341 Bluetooth 5.0 modules, based on the Nordic Semiconductor nRF52840 ARM Cortex-M4F CPU. the BMD-340 and BMD-341 are identical in operation except for the antenna. The BMD-340 has a PCB antenna while the BMD-341 has a U.FL connector. Both support 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:: ../../../../../../../../../zephyr/boards/arm/ubx_bmd340eval_nrf52840/doc/img/BMD-34-38-EVAL.jpg :align: center :alt: BMD-340-EVAL BMD-340-EVAL (Credit: u-blox AG) More information about the BMD-340-EVAL, BMD-340 module, BMD-341-EVAL, and BMD-341 module can be found at the `u-blox website`_. All of the Nordic Semiconductor examples for the nRF52840 DK (nrf52840dk_nrf52840) may be used without modification. ..note:: The BMD-340 and BMD-341 are identical except for the antenna. Throughout this board support package, the filenames utilize the ubx_bmd340eval_nrf52840. Hardware ******** The BMD-340 on the BMD-340-EVAL (or BMD-341 on the BMD-341-EVAL) contains an internal high-frequency oscillator at 32MHz. There is also a low frequency (slow) oscillator of 32.768kHz. The BMD-340 and BMD-341 do not include the slow crystal; however, the BMD-340-EVAL and BMD-341-EVAL do. .. note:: When targeting a custom design without a slow crystal, be sure to modify code to utilize the internal RC oscillator for the slow clock. Supported Features ================== The BMD-340-EVAL and BMD-341-EVAL 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, | | | | IEEE 802.15.4 | +-----------+------------+----------------------+ | RTC | on-chip | system clock | +-----------+------------+----------------------+ | RTT | Segger | console | +-----------+------------+----------------------+ | SPI(M/S) | on-chip | spi | +-----------+------------+----------------------+ | UART | on-chip | serial | +-----------+------------+----------------------+ | USB | on-chip | usb | +-----------+------------+----------------------+ | WDT | on-chip | watchdog | +-----------+------------+----------------------+ Other hardware features have not been enabled yet for this board. See the `u-blox website`_ for a complete list of BMD-340-EVAL and BMD-341-EVAL hardware features. Connections and IOs =================== LED --- * LED1 (red) = P0.13 * LED2 (red) = P0.14 * LED3 (green) = P0.15 * LED4 (green) = P0.16 * D5 (red) = OB LED 1 * D6 (green) = OB LED 2 Push buttons ------------ * BUTTON1 = SW1 = P0.11 * BUTTON2 = SW2 = P0.12 * BUTTON3 = SW3 = P0.24 * BUTTON4 = SW4 = P0.25 * BOOT = SW5 = boot/reset External Connectors ------------------- .. figure:: ../../../../../../../../../zephyr/boards/arm/ubx_bmd340eval_nrf52840/doc/img/bmd-340-eval_pin_out.jpg :align: center :alt: BMD-340-EVAL pin-out .. note:: The pin numbers noted below are referenced to the pin 1 markings on the BMD-340-EVAL or BMD-341-EVAL for each header J-Link Prog Connector (J2) +-------+--------------+ | PIN # | Signal Name | +=======+==============+ | 1 | VDD | +-------+--------------+ | 2 | IMCU_TMSS | +-------+--------------+ | 3 | GND | +-------+--------------+ | 4 | IMCU_TCKS | +-------+--------------+ | 5 | V5V | +-------+--------------+ | 6 | IMCU_TDOS | +-------+--------------+ | 7 | Cut off | +-------+--------------+ | 8 | IMCU_TDIS | +-------+--------------+ | 9 | Cut off | +-------+--------------+ | 10 | IMCU_RESET | +-------+--------------+ Debug OUT (J3) +-------+----------------+ | PIN # | Signal Name | +=======+================+ | 1 | EXT_VTG | +-------+----------------+ | 2 | EXT_SWDIO | +-------+----------------+ | 3 | GND | +-------+----------------+ | 4 | EXT_SWDCLK | +-------+----------------+ | 5 | GND | +-------+----------------+ | 6 | EXT_SWO | +-------+----------------+ | 7 | N/C | +-------+----------------+ | 8 | N/C | +-------+----------------+ | 9 | EXT_GND_DETECT | +-------+----------------+ | 10 | EXT_RESET | +-------+----------------+ Debug IN (J26) +-------+----------------+ | PIN # | Signal Name | +=======+================+ | 1 | BMD-340_VCC | +-------+----------------+ | 2 | BMD-340_SWDIO | +-------+----------------+ | 3 | GND | +-------+----------------+ | 4 | BMD-340_SWDCLK | +-------+----------------+ | 5 | GND | +-------+----------------+ | 6 | BMD-340_SWO | +-------+----------------+ | 7 | N/C | +-------+----------------+ | 8 | N/C | +-------+----------------+ | 9 | GND | +-------+----------------+ | 10 | BMD-340_RESET | +-------+----------------+ Auxiliary (J9) +-------+----------------+ | PIN # | Signal Name | +=======+================+ | 1 | P0.10 / NFC2 | +-------+----------------+ | 2 | P0.09 / NFC1 | +-------+----------------+ | 3 | P0.08 | +-------+----------------+ | 4 | P0.07 | +-------+----------------+ | 5 | P0.06 | +-------+----------------+ | 6 | P0.05 / AIN3 | +-------+----------------+ | 7 | P0.01 / XL2 | +-------+----------------+ | 8 | P0.00 / XL1 | +-------+----------------+ Auxiliary (J10) +-------+-------------------+ | PIN # | Signal Name | +=======+===================+ | 1 | P0.11 / TRACED[2] | +-------+-------------------+ | 2 | P0.12 / TRACED[1] | +-------+-------------------+ | 3 | P0.13 | +-------+-------------------+ | 4 | P0.14 | +-------+-------------------+ | 5 | P0.15 | +-------+-------------------+ | 6 | P0.16 | +-------+-------------------+ | 7 | P0.17 / QSPI_CS | +-------+-------------------+ | 8 | P0.18 / RESET | +-------+-------------------+ | 9 | P0.19 / QSPI_CLK | +-------+-------------------+ | 10 | P0.20 / QSPI_D0 | +-------+-------------------+ | 11 | P0.21 / QSPI_D1 | +-------+-------------------+ | 12 | P0.22 / QSPI_D2 | +-------+-------------------+ | 13 | P0.23 / QSPI_D3 | +-------+-------------------+ | 14 | P0.24 | +-------+-------------------+ | 15 | P0.25 | +-------+-------------------+ | 16 | P1.00 / TRACED[0] | +-------+-------------------+ | 17 | P1.09 / TRACED[3] | +-------+-------------------+ | 18 | No connection | +-------+-------------------+ Arduino Headers --------------- Power (J5) +-------+--------------+-------------------------+ | PIN # | Signal Name | BMD-34x Functions | +=======+==============+=========================+ | 1 | VSHLD | N/A | +-------+--------------+-------------------------+ | 2 | VSHLD | N/A | +-------+--------------+-------------------------+ | 3 | RESET | P0.18 / RESET | +-------+--------------+-------------------------+ | 4 | VSHLD | N/A | +-------+--------------+-------------------------+ | 5 | V5V | N/A | +-------+--------------+-------------------------+ | 6 | GND | N/A | +-------+--------------+-------------------------+ | 7 | GND | N/A | +-------+--------------+-------------------------+ | 8 | N/C | N/A | +-------+--------------+-------------------------+ Analog in (J8) +-------+--------------+-------------------------+ | PIN # | Signal Name | BMD-34x Functions | +=======+==============+=========================+ | 1 | A0 | P0.03 / AIN1 | +-------+--------------+-------------------------+ | 2 | A1 | P0.04 / AIN2 | +-------+--------------+-------------------------+ | 3 | A2 | P0.28 / AIN4 | +-------+--------------+-------------------------+ | 4 | A3 | P0.29 / AIN5 | +-------+--------------+-------------------------+ | 5 | A4 | P0.30 / AIN6 | +-------+--------------+-------------------------+ | 6 | A5 | P0.31 / AIN7 | +-------+--------------+-------------------------+ Digital I/O (J7) +-------+--------------+-------------------------+ | PIN # | Signal Name | BMD-34x Functions | +=======+==============+=========================+ | 1 | D7 | P1.08 | +-------+--------------+-------------------------+ | 2 | D6 | P1.07 | +-------+--------------+-------------------------+ | 3 | D5 | P1.06 | +-------+--------------+-------------------------+ | 4 | D4 | P1.05 | +-------+--------------+-------------------------+ | 5 | D3 | P1.04 | +-------+--------------+-------------------------+ | 6 | D2 | P1.03 | +-------+--------------+-------------------------+ | 7 | D1 (TX) | P1.02 | +-------+--------------+-------------------------+ | 8 | D0 (RX) | P1.01 | +-------+--------------+-------------------------+ Digital I/O (J6) +-------+--------------+-------------------------+ | PIN # | Signal Name | BMD-34x Functions | +=======+==============+=========================+ | 1 | SCL | P0.27 | +-------+--------------+-------------------------+ | 2 | SDA | P0.26 | +-------+--------------+-------------------------+ | 3 | AREF | P0.02 / AIN0 | +-------+--------------+-------------------------+ | 4 | GND | N/A | +-------+--------------+-------------------------+ | 5 | D13 (SCK) | P1.15 | +-------+--------------+-------------------------+ | 6 | D12 (MISO) | P1.14 | +-------+--------------+-------------------------+ | 7 | D11 (MOSI) | P1.13 | +-------+--------------+-------------------------+ | 8 | D10 (SS) | P1.12 | +-------+--------------+-------------------------+ | 9 | D9 | P1.11 | +-------+--------------+-------------------------+ | 10 | D8 | P1.10 | +-------+--------------+-------------------------+ J11 +-------+--------------+-------------------------+ | PIN # | Signal Name | BMD-34x Functions | +=======+==============+=========================+ | 1 | D12 (MISO) | P0.14 | +-------+--------------+-------------------------+ | 2 | V5V | N/A | +-------+--------------+-------------------------+ | 3 | D13 (SCK) | P0.15 | +-------+--------------+-------------------------+ | 4 | D11 (MOSI) | P0.13 | +-------+--------------+-------------------------+ | 5 | RESET | N/A | +-------+--------------+-------------------------+ | 6 | N/A | N/A | +-------+--------------+-------------------------+ Programming and Debugging ************************* Applications for the BMD-340-EVAL and BMD-341-EVAL board configurations can be built and flashed in the usual way (see :ref:`build_an_application` and :ref:`application_run` for more details); however, the standard debugging targets are not currently available. 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. First, run your favorite terminal program to listen for output. .. code-block:: console $ minicom -D -b 115200 Replace :code:`` with the port where the BMD-340-EVAL or BMD-341-EVAL can be found. For example, under Linux, :code:`/dev/ttyACM0`. Then build and flash the application in the usual way. .. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: ubx_bmd340eval_nrf52840 :goals: build flash Debugging ========= Refer to the :ref:`nordic_segger` page to learn about debugging u-blox boards with a Segger J-LINK-OB IC. Testing the LEDs and buttons in the BMD-340-EVAL and BMD-341-EVAL ***************************************************************** 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/arm/ubx_bmd340eval_nrf52840/ubx_bmd340eval_nrf52840.dts`. Using UART1 *********** The following approach can be used when an application needs to use more than one UART for connecting peripheral devices: 1. Add device tree overlay file to the main directory of your application: .. code-block:: devicetree &pinctrl { uart1_default: uart1_default { group1 { psels = , ; }; }; /* required if CONFIG_PM_DEVICE=y */ uart1_sleep: uart1_sleep { group1 { psels = , ; low-power-enable; }; }; }; &uart1 { compatible = "nordic,nrf-uarte"; current-speed = <115200>; status = "okay"; pinctrl-0 = <&uart1_default>; pinctrl-1 = <&uart1_sleep>; pinctrl-names = "default", "sleep"; }; In the overlay file above, pin P0.16 is used for RX and P0.14 is used for TX 2. Use the UART1 as ``DEVICE_DT_GET(DT_NODELABEL(uart1))`` Overlay file naming =================== The file has to be named ``.overlay`` and placed in the app main directory to be picked up automatically by the device tree compiler. Selecting the pins ================== Pins can be configured in the board pinctrl file. To see the available mappings, open the data sheet for the BMD-340 at the `u-blox website`_, Section 2 'Pin definition'. In the table 3 select the pins marked 'GPIO'. Note that pins marked as 'Standard drive, low frequency I/O only (<10 kH' can only be used in under-10KHz applications. They are not suitable for 115200 speed of UART. .. note: Pins are defined according to the "nRF52" pin number, not the module pad number. References ********** .. target-notes:: .. _u-blox website: https://www.u-blox.com/docs/UBX-19033353