STMicroelectronics ST25DV64KC User Manual
  1. Manuals
  2. Brands
  3. STMicroelectronics Manuals
  4. Microcontrollers
  5. ST25DV64KC
  6. User manual

STMicroelectronics ST25DV64KC User Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Introduction
This demonstration is a joint development between STMicroelectronics and the ISCA Laboratory, Hellenic Mediterranean
University (refer to
[1]
for more information).
®
LoRa
is a long-range, low data rate, and lower-power wireless communication system used in industrial IoT applications
including, for example, smart metering, sensor monitoring, alarm, etc.
Each device requires provisioning with cryptographic keys and also registration on a LoRaWAN® network.
The current demonstration shows how a
•
Facilitate the provisioning of a LoRa
•
Register the device on a LoRaWAN
This demonstration uses The Things Network LoRaWAN
When the registration is complete, a dashboard, displayed in a web browser, is available for monitoring the data coming from
®
the LoRa
device.
The following packages are available on
•
STSW-ST25DV010
STM32WL55 firmware
•
STSW-ST25010
Android application
UM3146 - Rev 1 - March 2023
For further information contact your local STMicroelectronics sales office.
Demonstration of ST25DV64KC LoRa
ST25DV64KC
NFC tag is used to:
®
device with keys
®
network
®
infrastructure.
Figure 1.
Example of LoRa
http://www.st.com
for this demonstration:
®
dashboard display
UM3146
User manual
®
provisioning
www.st.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ST25DV64KC and is the answer not in the manual?

Questions and answers

Related Manuals for STMicroelectronics ST25DV64KC

Summary of Contents for STMicroelectronics ST25DV64KC

  • Page 1: Figure 1. Example Of Lora ® Dashboard Display

    User manual ® Demonstration of ST25DV64KC LoRa provisioning Introduction This demonstration is a joint development between STMicroelectronics and the ISCA Laboratory, Hellenic Mediterranean University (refer to for more information). ® LoRa is a long-range, low data rate, and lower-power wireless communication system used in industrial IoT applications including, for example, smart metering, sensor monitoring, alarm, etc.

  • Page 2: General Information

    Note: The information provided is from third-party URL addresses, active at the time of document publication. However, STMicroelectronics shall not be liable for any change, move, or inactivation of the URL or the referenced material mentioned above. UM3146 - Rev 1...

  • Page 3: Glossary

    UM3146 Glossary Glossary Table 2. Acronyms and abbreviations Acronyms Definition AppEUI In LoRaWAN® specifications before 1.1, JoinEUI was called AppEUI. See JoinEUI. A device specific encryption key used during OTAA to derive both the Network Session Key and AppKey Application Session Key. Application Session Key is used to encrypt the messages to ensure confidentiality.

  • Page 4: Hardware Requirements

    China. Figure 2. NUCLEO-WL55JC2 • X-NUCLEO-NFC07A1 Nucleo shield. This Nucleo shield contains a ST25DV64KC NFC tag. This dynamic NFC tag is connected to the STM32WL55 MCU to provide it NFC bidirectional connectivity. Figure 3. X-NUCLEO-NFC07A1 Nucleo shield The ST1 jumper must be placed on the 3.3 V side.

  • Page 5: Figure 4. Nucleo_Wl55 Board

    UM3146 Hardware requirements Note: Alternatively, it is also possible to use a board ANT7-T-25DV64KC that has a smaller foot print and NFC antenna, but some soldering is needed to connect it to the Nucleo_WL55 board. Figure 4. Nucleo_WL55 board Use either the board X-NUCLEO-NFC07A1 or the board ANT7-T-25DV64KC, both are not necessary. Table 3.

  • Page 6: Software Requirements

    UM3146 Software requirements Software requirements In order to use this demonstration, the following software is required: • STM32CubeIDE • STM32CubeProgrammer • Optional: To rebuild the Android application, refer to the Android Studio website ([2]). UM3146 - Rev 1 page 6/33...

  • Page 7: Prerequisites

    UM3146 Prerequisites Prerequisites The current demo relies on a LoRaWAN® infrastructure provided by The Things Network. This chapter explains how to create an account and create an application to The Things Network, which is necessary before using it. This registration is free and does not require a subscription. Creation of a user account on The Things Network console •...

  • Page 8: Registration Of A Gateway On The Things Network

    UM3146 Registration of a gateway on The Things Network Registration of a gateway on The Things Network ® If using your own LoRa gateway, register it on The Things Network by clicking the Gateways tab and then the Register gateway button: Figure 8.

  • Page 9: Android Application Installation

    UM3146 Android application installation Android application installation Install the Android application from Google Play (refer to [4]). Android APK and source code can be downloaded from STSW-ST25010. To open and rebuild the source code, use Android Studio (refer to [2]). Personalization of the Android application For the Android application, no change is needed in the source code.

  • Page 10: Figure 10. Oauth 2.0 Authentication Steps

    UM3146 Authentication in the Android application Figure 10. OAuth 2.0 authentication steps Click the Login button. The Android application opens a URL to start a login session on The Things Network server. Note: Example URL: https://eu1.cloud.thethings.network/oauth/authorize?client_id=st25-lora- provisioning&redirect_uri=https://www.myst25.com/lora/login/&state= 0FEF55D9FD8AE3F492EED15E4B498F71&response_type=code For The Things Network URL for user authentication, refer to [6]. The following parameters are passed to this URL: –...

  • Page 11: Troubleshooting

    UM3146 Troubleshooting Troubleshooting Depending on the smartphone and the browser used, the Android application link may not work as expected. For example, the redirect_uri (https://www.myst25.com/lora/login/) may open in the browser without opening the Android application. The following example demonstrates how to resolve the problem on a Google Pixel 6: Go to the Settings menu and search for Opening links.

  • Page 12: Figure 13. Adding Links

    UM3146 Troubleshooting Click the Add link button and tick the check box corresponding to www.myst25.com: Figure 13. Adding links ® The links pointing to www.myst25.com open in the LoRa provisioning application. However, each smartphone has its own organization for the Settings menu, so the wording and the location of the settings may be different.

  • Page 13: Stm32Wl Firmware Installation

    UM3146 STM32WL firmware installation STM32WL firmware installation Download the STM32WL firmware from STSW-ST25DV010. This package contains the bootloader (source code and binary) and the firmware (source code and binaries for the European region). • For the bootloader, it is not necessary to recompile it, use directly as provided. •...

  • Page 14: Hardware Board Selection

    UM3146 Firmware personalization Change define of ACTIVE_REGION: Figure 15. Define the ACTIVE_REGION The possible values are listed in the enum LoRaMacRegion_t of the file Middlewares/Third_Party/ LoRaWAN/Mac/LoRaMacInterfaces.h: * LoRaMAC region enumeration typedef enum eLoRaMacRegion * AS band on 923MHz LORAMAC_REGION_AS923, * Australian band on 915MHz LORAMAC_REGION_AU915, * Chinese band on 470MHz LORAMAC_REGION_CN470,...

  • Page 15: Build Of Firmware Binaries

    UM3146 Build of firmware binaries Figure 16. #define NFC_TYPE Build of firmware binaries The firmware is built with the STM32CubeIDE using the Build All entry in the project menu. Figure 17. Build firmware binaries Flashing Use STM32CubeProgrammer to flash the bootloader and the firmware: •...

  • Page 16: How To Run The Demonstration

    UM3146 How to run the demonstration How to run the demonstration Login on The Things Network Launch the Android application and click the Login button. This opens a web browser to perform an OAuth authentication. The page requires you to provide to log in and password of your account on The Things Network: Figure 18.

  • Page 17: Add A Lora ® Device To The Things Network

    UM3146 Add a LoRa® device to The Things Network ® Figure 19. LoRa main screen At the top of the screen, select the application with the name chosen in Section 5.2 Creation of an application on The Things Network. In this case, the application is named ST25 LoRa Demo. ®...

  • Page 18: Figure 20. Add A Lora ® Device

    An NFC communication takes place between the smartphone and the LoRa device. This NFC communication uses the FTM mailbox of the ST25DV64KC to collect some information about the device. A popup opens to confirm adding this device to the application on The Things Network. The popup displays some information about the device, for example, its unique DevEUI.

  • Page 19: Getting Data From Thelora ® Device

    UM3146 Getting data from theLoRa® device Figure 21. Set the device GPS location ® The GPS location is saved in the information associated to this device on The Things Network. LoRa devices are frequently used in isolated places, therefore knowing the exact GPS location is practical and may help to locate the device as necessary.

  • Page 20: Display Of Lora ® Data

    UM3146 Display of LoRa® data Figure 22. User button SW2 on Nucleo board On The Things Network console, click the application and then select the end device. Use the Live Data tab to see all the data (join data, uplink, and downlink data) exchanged with this device. The uplink data message contains the data sent by the device (“alt”, “ampr”, “bmehum”, etc.).

  • Page 21: Figure 24. Lora ® Dashboard

    UM3146 Display of LoRa® data ® Figure 24. LoRa dashboard In this demonstration, the data collected by TTN’s LoRaWAN® server is exported through MQTT and displayed on a smartphone dashboard or in a web browser. ® TTN server acts as an MQTT broker sending notifications every time LoRa data is available.

  • Page 22: Example Of Uplink Data

    UM3146 Display of LoRa® data Figure 25. MQTT URL and credentials When using the MQTT for the first time, click the Generate new API key button. Note: Copy the key and save it in a secure place because it is not possible to access it again. The API key is used as a password when configuring an MQTT client to receive MQTT notifications.

  • Page 23: Figure 26. Data Reformatted From Json Format

    UM3146 Display of LoRa® data Figure 26. Data reformatted from JSON format ® The data sent by the LoRa device is shown in the decoded_payload field (including current, humidity, pressure, temperature, voltage, power, etc.). ® In this demonstration, two ways of displaying data coming from the LoRa device are shown: •...

  • Page 24: Display On A Smartphone

    UM3146 Display of LoRa® data 8.4.2 Display on a smartphone Install the ST25MQTTClient Android application from Google Play (refer to [12]). This application serves as an MQTT client able to receive the MQTT notifications, parse the JSON data, and display certain data in a graph or table. Figure 27.

  • Page 25: Display In A Web Browser

    UM3146 Display of LoRa® data Figure 29. Example MQTT notification display on a smartphone ® For example, the power data displayed in the graph, is sent by the LoRa device every 10 minutes. The user events are sent when the SW2 button of the Nucleo board is pressed. Note: It is necessary to wait for a minimum of 15 seconds between consecutive user events.

  • Page 26: Remove A Lora ® Device From The Things Network

    This bidirectional interface is also used during the product life to update its firmware. The ST25DV64KC contains a RAM mailbox of 256 bytes allowing the transfer of data both ways. The firmware of the STM32WL is updated this way. The data rate is about 40 seconds to transfer 100 Kbytes.

  • Page 27: Comparison With Existing Provisioning Solutions

    UM3146 Comparison with existing provisioning solutions Comparison with existing provisioning solutions Table 5. Comparison of provisioning solutions Provisioning Comments method This solution is presented in the current document. The bidirectional capability of the NFC tag is used to provision the device with keys. It is important to highlight that, with this solution, the key provisioning is not done at the factory but at Provisioning with runtime when the user or an installer sets up the product for the first time.

  • Page 28: Figure 32. Infrastructure Of St25Dv64Kc Lora ® Provisioning Demonstration

    UM3146 Appendix A ® Figure 32. Infrastructure of ST25DV64KC LoRa provisioning demonstration UM3146 - Rev 1 page 28/33...

  • Page 29: Revision History

    UM3146 Revision history Table 6. Document revision history Date Version Changes 09-Mar-2023 Initial release. UM3146 - Rev 1 page 29/33...

  • Page 30: Table Of Contents

    UM3146 Contents Contents General information ............. . . 2 Glossary .
  • Page 31 Figure 32. Infrastructure of ST25DV64KC LoRa provisioning demonstration ....... 28...
  • Page 32 UM3146 List of tables List of tables Table 1. References ............... . 2 Table 2.
  • Page 33 IMPORTANT NOTICE – READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment.

Table of Contents