Introduction to SR250 UWBIOT release for Zephyr OS

UWB IoT Middleware provides API interface for communicating with Trimension SR250 UWB controller. This middleware will run on an embedded host and communicate over UCI protocol with underlying UWB devices. The current release targets RW612 NXP MCU running zephyr OS.

The reference platform is composed of:

• SR250-ARD Development board
• FRDM-RW612 Development Board

⚠️ The FRDM-RW612 board requires a small rework to expose the SPI interface on the Arduino headers. You can find relevant instructions here.

Revision history

Version	Description / Update
SR250_UWBIOT_IOT4_RFP	Initial release

UWB IoT Middleware details

• Information about the UWB IoT Middleware architecture and components can be found in UWBIoT_Middleware_Guide.pdf
• Description of the UWB IoT Middleware API can be found in UWBIoT_API_Reference.pdf

Prerequisites

1. Git latest version (https://git-scm.com/download)
2. CMake version >= 3.21.1 (https://cmake.org/download/)
3. Python 3.8 or later
4. Ninja build system (install with pip install ninja)
5. West Zephyr meta-tool (install with pip install west)
6. Zephyr SDK 0.16.1 or later (https://docs.zephyrproject.org/latest/develop/toolchains/zephyr_sdk.html#zephyr-sdk-installation)

Setting up build environment and compliling

Follow the steps below to set up the build environment for Zephyr-based projects.

1. Retrieve UWBIoT middleware for SR250

git clone https://github.com/nxp-uwb/sr250-uwbiot-zephyr.git

2. Initialize and update Zephyr workspace

cd ~/sr250-uwbiot-zephyr
west init -l --mf west.yml uwbiot-top
west update

3. Install Zephyr Python dependencies

pip install -r zephyr/scripts/requirements.txt

4. Set up Zephyr environment variables

zephyr\zephyr-env.cmd

On Linux, use:

source zephyr/zephyr-env.sh

5. Build the application

west build -b <board_name> -p auto <path_to_demo>

Where <board_name> is the target board (e.g., frdm_rw612) and <path_to_demo> is the path to the demo application directory (e.g., uwbiot-top/demos/SR2xx/demo_sr2xx_fw_update/zephyr).

6. Running the application Flash the built application to the target board:

west flash

Log outputs during application execution can be observed using a serial terminal application (e.g., PuTTY, Tera Term) with the following settings:

• Baudrate: 3000000
• Data: 8 bits
• Parity: None
• Stop bits: 1 bit
• Flow control: None

Support

For more details about Trimension SR250 UWB controller refer to the related to the related page on NXP.com: https://www.nxp.com/products/SR250.

To contact NXP or to report issues, please use https://www.nxp.com/support/support:SUPPORTHOME