| .. _ubx_bmd345eval_nrf52840: |
| |
| u-blox EVK-BMD-34/38: BMD-345-EVAL |
| ################################## |
| |
| Overview |
| ******** |
| |
| The BMD-345-EVALhardware provides support for the u-blox BMD-345 |
| Bluetooth 5.0 modules, based on the Nordic Semiconductor nRF52840 |
| ARM Cortex-M4F CPU and Skyworks RFX2411 Front End Module (FEM), |
| also known as a Power Amplifier / Low Noise Amplifier (PA/LNA). |
| 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:: img/bmd-345-eval_features.jpg |
| :align: center |
| :alt: BMD 345 EVAL |
| |
| BMD-345-EVAL (Credit: ublox AG) |
| |
| More information about the BMD-345-EVAL and BMD-345 module can be |
| found at the `u-blox website`_. |
| |
| |
| Hardware |
| ******** |
| |
| The BMD-345 on the BMD-345-EVAL contains an internal high-frequency |
| oscillator at 32MHz. There is also a low frequency (slow) |
| oscillator of 32.768kHz. The BMD-345 does not include the slow |
| crystal; however, the BMD-345-EVAL does. |
| |
| .. 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. |
| |
| Front End Module |
| ================ |
| |
| BMD-345 utilizes the Skyworks RFX2411 front end module (FEM). |
| The FEM provides higher output power and better sensitivity. |
| |
| FEM pin assignments |
| ------------------- |
| |
| +-------------+--------------+----------+--------+----------+---------+ |
| | GPIO Number | Signal Name | Shutdown | Bypass | Transmit | Receive | |
| +=============+==============+==========+========+==========+=========+ |
| | P1.05 | TX_EN | Low | Low | High | Low | |
| +-------------+--------------+----------+--------+----------+---------+ |
| | P1.06 | RX_EN | Low | Low | Low | High | |
| +-------------+--------------+----------+--------+----------+---------+ |
| | P1.04 | MODE | Low | High | Low | Low | |
| +-------------+--------------+----------+--------+----------+---------+ |
| | P1.02 | A_SEL | Low | Low | Low | Low | |
| +-------------+--------------+----------+--------+----------+---------+ |
| |
| Supported Features |
| ================== |
| |
| The BMD-345-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-345-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:: img/bmd-345-eval_pin_out.jpg |
| :align: center |
| :alt: BMD-345-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-345 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-345 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-345 Functions | |
| +=======+==============+=========================+ |
| | 1 | D7 | P1.08 | |
| +-------+--------------+-------------------------+ |
| | 2 | D6 | P1.07 | |
| +-------+--------------+-------------------------+ |
| | 3 | N/C | N/A | |
| +-------+--------------+-------------------------+ |
| | 4 | N/C | N/A | |
| +-------+--------------+-------------------------+ |
| | 5 | N/C | N/A | |
| +-------+--------------+-------------------------+ |
| | 6 | D2 | P1.03 | |
| +-------+--------------+-------------------------+ |
| | 7 | N/C | N/A | |
| +-------+--------------+-------------------------+ |
| | 8 | D0 (RX) | P1.01 | |
| +-------+--------------+-------------------------+ |
| |
| Digital I/O (J6) |
| |
| +-------+--------------+-------------------------+ |
| | PIN # | Signal Name | BMD-345 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-345 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-345-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 :zephyr:code-sample:`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 BMD-345-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_bmd345eval/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-345-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/u-blox/ubx_bmd345eval/ubx_bmd345eval_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 = <NRF_PSEL(UART_TX, 0, 14)>, |
| <NRF_PSEL(UART_RX, 0, 16)>; |
| }; |
| }; |
| /* required if CONFIG_PM_DEVICE=y */ |
| uart1_sleep: uart1_sleep { |
| group1 { |
| psels = <NRF_PSEL(UART_TX, 0, 14)>, |
| <NRF_PSEL(UART_RX, 0, 16)>; |
| 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 ``<board>.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-345 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/en/product/bmd-34-series-open-cpu |
