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u-blox EVK-BMD-30/35: BMD-300-EVAL, BMD-301-EVAL, and BMD-350-EVAL

Overview

The BMD-300-EVAL, BMD-301-EVAL, and BMD-350-EVAL hardware provides support for the u-blox BMD-300, BMD-301, and BMD-350 Bluetooth 5 modules, based on the Nordic Semiconductor nRF52832 ARM Cortex-M4F CPU and the following devices:

  • ADC

  • CLOCK

  • FLASH

  • GPIO

  • I2C

  • MPU

  • NVIC

  • PWM

  • RADIO (Bluetooth Low Energy)

  • RTC

  • Segger RTT (RTT Console)

  • SPI

  • UART

  • WDT

BMD-300-EVAL

Fig. 176 BMD-300-EVAL (Credit: u-blox AG)

Note

The BMD-300-EVAL, BMD-301-EVAL, and BMD-350-EVAL share the same pin headers and assignments. The boards are different only in the module used on the board. The BMD-300 and BMD-301 modules share the same footprint and differ only in the antenna. The BMD-350 module utilizes the nRF52832 CIAA WLCSP package.

More information about the BMD-300-EVAL, BMD-301-EVAL, and BMD-350-EVAL and the respective modules can be found at the u-blox website 1. All of the Nordic Semiconductor examples for the nRF52 DK (nrf52dk_nrf52832) may be used without modification.

Hardware

The BMD-300/301/350 module on the board contains an internal high-frequency oscillator at 32MHz. There is also a low frequency (slow) oscillator of 32.768kHz. The module itself does not include the slow crystal; however, the EVAL boards 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-300/301/350-EVAL 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

RTC

on-chip

system clock

RTT

Segger

console

SPI(M/S)

on-chip

spi

UART

on-chip

serial

WDT

on-chip

watchdog

Other hardware features have not been enabled yet for this board. See the u-blox website 1 for a complete list of BMD-300/301/350-EVAL hardware features.

Connections and IOs

LED

  • LED1 (red) = P0.17

  • LED2 (red) = P0.18

  • LED3 (green) = P0.19

  • LED4 (green) = P0.20

  • D5 (red) = OB LED 1

  • D6 (green) = OB LED 2

Push buttons

  • BUTTON1 = SW1 = P0.13

  • BUTTON2 = SW2 = P0.14

  • BUTTON3 = SW3 = P0.15

  • BUTTON4 = SW4 = P0.16

  • BOOT = SW5 = boot/reset

External Connectors

BMD-300-EVAL pin-out

Fig. 177 BMD-300-EVAL pin-out (Credit: u-blox AG)

Note

The BMD-300-EVAL, BMD-301-EVAL, and BMD-350-EVAL share the same pin headers and assignments. The BMD-300-EVAL is shown here.

Note

The pin numbers noted below are referenced to the pin 1 markings on the BMD-300/301/350-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

Auxiliary (J9)

PIN #

Signal Name

1

P0.10

2

P0.09

3

P0.08

4

P0.07

5

P0.06

6

P0.05 / AIN3

7

P0.21 / RESET

8

P0.01 / XL2

9

P0.00 / XL1

10

GND

Arduino Headers

Power (J5)

PIN #

Signal Name

BMD-300/301/350 Functions

1

VSHLD

N/A

2

VSHLD

N/A

3

RESET

P0.21 / 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-300/301/350 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-300/301/350 Functions

1

D7

P0.18/TRACEDATA[0]/SWO

2

D6

P0.17

3

D5

P0.16/TRACEDATA[1]

4

D4

P0.15/TRACEDATA[2]

5

D3

P0.14/TRACEDATA[3]

6

D2

P0.13

7

D1 (TX)

P0.12

8

D0 (RX)

P0.11

Digital I/O (J6)

PIN #

Signal Name

BMD-300/301/350 Functions

1

SCL

P0.27

2

SDA

P0.26

3

AREF

P0.02/AIN0

4

GND

N/A

5

D13 (SCK)

P0.25

6

D12 (MISO)

P0.24

7

D11 (MOSI)

P0.23

8

D10 (SS)

P0.22

9

D9

P0.20/TRACECLK

10

D8

P0.19

J11

PIN #

Signal Name

BMD-300/301/350 Functions

1

D12 (MISO)

P0.24

2

V5V

N/A

3

D13 (SCK)

P0.25

4

D11 (MOSI)

P0.23

5

RESET

N/A

6

N/A

N/A

Programming and Debugging

Flashing

Follow the instructions in the Nordic nRF5x Segger J-Link page to install and configure all the necessary software. Further information can be found in Flashing. Then build and flash applications as usual (see Building an Application and Run an Application for more details).

Here is an example for the Hello World application.

First, run your favorite terminal program to listen for output.

$ minicom -D <tty_device> -b 115200

Replace <tty_device> with the port where the BMD-300/301/350-EVAL can be found. For example, under Linux, /dev/ttyACM0.

Then build and flash the application in the usual way.

# From the root of the zephyr repository
west build -b ubx_bmd300eval_nrf52832 samples/hello_world
west flash

Debugging

Refer to the Nordic nRF5x Segger J-Link page to learn about debugging u-blox boards with a Segger J-LINK-OB IC.

Testing the LEDs and buttons in the BMD-330-EVAL

There are 2 samples that allow you to test that the buttons (switches) and LEDs on the board are working properly with Zephyr:

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 boards/arm/ubx_bmd300eval_nrf52832/ubx_bmd300eval_nrf52832.dts.