NXP FRDM-KW41Z Shield - Zephyr

.. _frdm_kw41z_shield:

NXP FRDM-KW41Z Shield #####################

Overview

The FRDM-KW41Z is a development kit enabled by the Kinetis® W series KW41Z/31Z/21Z (KW41Z) family built on ARM® Cortex®-M0+ processor with integrated 2.4 GHz transceiver supporting Bluetooth® Smart/Bluetooth® Low Energy (BLE) v4.2, Generic FSK, IEEE® 802.15.4 and Thread.

The FRDM-KW41Z can be used as a standalone board or as an Arduino shield. This document covers usage as a shield; see :zephyr:board:frdm_kw41z for usage as a standalone board.

Bluetooth Controller

To use the FRDM-KW41Z as a Bluetooth low energy controller shield with a serial host controller interface (HCI):

#. Download the MCUXpresso SDK for FRDM-KW41Z from the MCUXpresso SDK Builder Website_.

#. Open the MCUXpresso IDE or IAR project in :file:boards/frdmkw41z/wireless_examples/bluetooth/hci_black_box/bm

#. Open :file:source/common/app_preinclude.h and add the following line:

.. code-block:: console

  #define gSerialMgrRxBufSize_c 64

#. Build the project to generate a binary :file:hci_black_box_frdmkw41z.bin.

#. Connect the FRDM-KW41Z board to your computer with a USB cable. A USB mass storage device should enumerate.

#. Program the binary to flash by copying it to the USB mass storage device.

#. Remove the USB cable to power down the board.

#. Configure the jumpers J30 and J31 such that:

J30 pin 1 is attached to J31 pin 2
J30 pin 2 is attached to J31 pin 1

The jumpers should be parallel to the Arduino headers. This configuration routes the UART RX and TX signals to the Arduino header, rather than to the OpenSDA circuit.

#. Attach the FRDM-KW41Z to the Arduino header on your selected main board, such as :zephyr:board:mimxrt1050_evk or :zephyr:board:frdm_k64f.

#. Set --shield frdm_kw41z when you invoke west build in your Zephyr bluetooth application. For example,

.. zephyr-app-commands:: :zephyr-app: samples/bluetooth/peripheral_hr :board: frdm_k64f :shield: frdm_kw41z :goals: build

.. include:: ../../../nxp/common/board-footer.rst.inc

References

.. target-notes::

.. _MCUXpresso SDK Builder Website: https://mcuxpresso.nxp.com