This is the documentation for the latest (master) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

nRF52-VBLUno52

Overview

Zephyr can use the nrf52_vbluno52 board configuration to run on the VBLUno52 board, a VNG Bluetooth Low Energy UNO using an nRF52832 ARM Cortex-M4F processor. It provides support for the Nordic Semiconductor nRF52832 ARM Cortex-M4F CPU and the following devices:

  • NVIC

  • RTC

  • UART

  • GPIO

  • FLASH

  • RADIO (Bluetooth Low Energy 5.0)

nRF52 VBLUno52

nRF52_VBLUno52 board

Hardware

The VBLUno52 board has two external oscillators. The frequency of the slow clock is 32.768 kHz. The frequency of the main clock is 64 MHz.

Supported Features

The nrf52_vbluno52 board configuration supports the following 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

I2C

on-chip

i2c

SPI

on-chip

spi

Other hardware features are not supported by the Zephyr kernel.

Connections and IOs

LED

  • LED = LED0 (green) = P0.12

Push buttons

  • BUTTON = BUT = SW0 = P0.17

Programming and Debugging

Flashing

The VBLUno52 board has an on-board DAPLink (CMSIS-DAP) interface for flashing and debugging. You do not need any other programming device. You only need to install the pyOCD tool (https://pypi.python.org/pypi/pyOCD)

See the Getting Started Guide for general information on setting up your development environment.

You can build and flash applications in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b nrf52_vbluno52 samples/hello_world
west flash

Testing the VBLUno52 with Zephyr: buttons, LEDs, UART, BLE

Here are some sample applications that you can use to test different components on the VBLUno52 board: