ST STSW-S2LP-KNX-DK Bedienungsanleitung

Introduction

The STSW-S2LP-KNX-DK is an evaluation package based on the S2-LP high performance ultra-low power RF transceiver and

BlueNRG-2 very low power Bluetooth Low Energy (BLE) system-on-chip. It is designed to evaluate KNX-RF communication in

the 868 MHz license-free ISM band.

The STSW-S2LP-KNX-DK package provides a software framework including KNX Tapko technologies stack (evaluation

version). The package includes application examples which allow simulating point-to-point KNX-RF protocol communication

and are compliant with the KNX ETS tool.

This software combines KNX-RF Sub-1 GHz protocol and Bluetooth LE communication in one single application (using S2-LP

and BlueNRG-2).

Getting started with the STSW-S2LP-KNX-DK software package for KNX-RF

UM2920

User manual

UM2920 - Rev 1 - September 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1Getting started

1.1 Overview

The STSW-S2LP-KNX-DK features:

• Firmware package to start evaluation of KNX-RF connectivity based on the S2-LP transceiver

• KNX-RF Tapko technology stack (evaluation license) running on the BlueNRG-2 Bluetooth® LE 5.2 wireless

SoC and STM32L0 microcontrollers

• Application example for KNX-RF and Bluetooth® LE 5.2 controller

• Application example for KNX-RF actuator

• Standalone point-to-point KNX-RF communication between two nodes

• Control and monitoring of KNX-RF devices through KNX ETS5 PC tool

• Combination of KNX-RF and Bluetooth® connectivity in one application

• Sample implementation available on X-NUCLEO-S2868A2 (or X-NUCLEO-S2868A1) expansion boards

when connected to STEVAL-IDB008V2 (BlueNRG-2 Bluetooth Low-Energy) or NUCLEO-L073RZ

development boards

1.2 Folder structure

After downloading the STSW-S2LP-KNX-DK software package, extract its components to a temporary directory.

Figure 1. STSW-S2LP-KNX-DK folder structure

1. Androids Apps (APK file)

2. Pre-compiled binaries

3. Project libraries (BLE, KNX, S2-LP drivers)

4. Keil IDE project examples

1.3 Hardware configurations

To run the STSW-S2LP-KNX-DK evaluation package, the following hardware configurations are possible:

• one running on a STEVAL-IDB008V2 evaluation board based on the BlueNRG-2 Bluetooth® LE 5.2 wireless

SoC plus an X-NUCLEO-S2868A1 or X-NUCLEO-S2868A2 expansion board

• one running on a NUCLEO-L073RZ development board plus an X-NUCLEO-S2868A1 or X-NUCLEO-

S2868A2 expansion board

1.3.1 STEVAL-IDB008V2

To run the demo using the BlueNRG-2 Bluetooth® LE 5.2 wireless SoC, you need:

• a STEVAL-IDB008V2 (for further details, refer to UM2071)

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Getting started

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Figure 2. STEVAL-IDB008V2 evaluation board

1.3.1.1 Modifying the STEVAL-IDB008V2

To make the STEVAL-IDB008V2 compatible with the STSW-S2LP-KNX-DK package, perform the below

modifications on the board bottom side.

Step 1. Remove R12.

Step 2. Create a short-circuit between pin 8 and pin 7 on CN3 connector.

Figure 3. CN3 modifications

Before After

Step 3. Remove R25, R21, R19 and R16.

Step 4. Set a short between the internal pad of R21 and R17.

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Hardware configurations

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Step 5. Set a short between pin 6 and CN4 connector and the internal pad of R19.

Figure 4. CN4 modifications

Before

After

Step 6. Remove R11.

Step 7. Create a short-circuit between R8 and DIO8.

1.3.2 NUCLEO-L073RZ

To run the demo using the STM32L073RZ microcontroller, you need:

• a NUCLEO-L073RZ (for further details, refer to UM1727)

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Hardware configurations

UM2920 - Rev 1 page 4/71

Figure 5. NUCLEO-L073RZ development board

NUCLEO-

L073RZ

1.3.3 X-NUCLEO-S2868A1 and X-NUCLEO-S2868A2

An X-NUCLEO-S2868A2 or X-NUCLEO-S2868A1 expansion board is necessary to provide Sub-1 GHz and

KNX-RF connectivity.

Figure 6. X-NUCLEO-S2868A1 expansion board

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Hardware configurations

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Figure 7. X-NUCLEO-S2868A2 expansion board

1.3.3.1 Modifying X-NUCLEO-S2868A1/X-NUCLEO-S2868A2 expansion boards

To make X-NUCLEO-S2868A1/X-NUCLEO-S2868A2 compatible with the STSW-S2LP-KNX-DK package, when

used with the STEVAL-IDB008V2 only, you have to apply the modifications below to the S2-LP expansion board.

Step 1. Remove R22.

Step 2. Solder R7 to create a short-circuit.

1.4 Software requirements

To use the STSW-S2LP-KNX-DK package, you have to install into your PC/laptop:

• Keil µVision

• KNX ET5

•BlueNRG-X Flasher utility

•STM32CubeProgrammer

• Android apps for BLE connectivity

1.4.1 Keil µVision

Application project examples are provided for Keil project only.

Keil can be used with evaluation license with CM0 and CM0+ up to 256 kB Flash code. It is suitable to evaluate

STEVAL-IDB008V2 (BlueNRG-2 Cortex-M0) or NUCLEO-L073RZ (STM32L073RZ Cortex-M0+).

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Software requirements

UM2920 - Rev 1 page 6/71

Step 1. Download and install Keil µVision

Figure 8. MDK-ARM download web page

Step 2. Once installation is completed, install MDK5 Software packs to support BlueNRG-2 and

STM32L073RZ

Step 2a. check MDK5 Software Packs (keil.com)

Step 2b. go to Keil section

Step 2c. install the following packages:

◦STMicroelectronics BlueNRG-2 Series Device Support

◦ STMicroelectronics STM32L0 Series Device Support

Figure 9. MDK-ARM device support packs

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Software requirements

UM2920 - Rev 1 page 7/71

Step 3. Activate the license at https://www2.keil.com/stmicroelectronics-stm32/mdk.

Figure 10. MDK-ARM license activation for Cortex-M0/M0+

Step 3a. Copy PSN code (XXXX-XXXX-XXXX).

Step 3b. Go to Keil IDE license management.

Step 3c. Click on the [Get a LIC via Internet] button.

Step 3d. Fill in the form.

You will receive an e-mail with the new license ID to be entered to activate IDE license.

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Software requirements

UM2920 - Rev 1 page 8/71

Figure 11. Procedure to activate free Keil license

1.4.2 KNX ETS5

The ETS5 tool, which stands for Engineering Test Software, is needed to install and configure a KNX network

independently from the media used (wired or wireless).

The installation of ETS5 is required to evaluate KNX-RF devices based on BlueNRG-2, S2-LP and STM32L0

solutions.

ETS5 demo license is free and limited to up to 5 KNX devices in the system.

To install ETS5, go to KNX - MyKNX, create an account and download ETS5 Lite demo version.

Figure 12. ETS5 Lite demo download

1.4.3 BlueNRG-X Flasher Utility

To flash and mass erase the BlueNRG BLE SoC chipsets, install the STSW-BNRGFLASHER tool.

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Software requirements

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Figure 13. BlueNRG-X Flasher Utility installation

1.4.4 STM32CubeProgrammer

install STM32CubeProgrammer software

It provides an environment to program STM32 microcontrollers and load pre-compiled binaries.

Figure 14. STM32CubeProgrammer installation

1.5 Dedicated Android apps for BLE connectivity

KNX-RF evaluation package contains the APK file: BlueNRGKNX_Android.apk. It provides dedicated apps for

light control applications using BLE connectivity (to be used with BlueNRG-2 application).

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Dedicated Android apps for BLE connectivity

UM2920 - Rev 1 page 10/71

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