STMicroelectronics Updates Free Embedded Software for Enhanced LoRaWAN Experience


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I-CUBE-LRWAN Expansion Package for the STM32 family of microcontrollers

STMicroelectronics is making its I-CUBE-LRWAN Expansion Package for the STM32 family of microcontrollers in accordance with the recently approved LoRaWAN 1.0.3 specifications from the LoRa-Alliance, making it more secure, expanding the possibilities for Internet-of-Things (IoT) applications that operate on Low-Power Wide Area Networks (LPWAN).


The I-CUBE-LRWAN expansion package consists of a set of libraries and application examples for the STM32 MCU series, including the ultra-low power STM32L0, STM32L1, STM32L4 and STM32L4+ series, targeted for IoT devices. With the growing security threat for IoT applications, the new libraries includes a dedicated API for managing secure elements, such as the STSAFE-A product family, and enable a range of data-protection capabilities. In addition to that, the LoRaWAN 1.0.3 update added compatibility with Class B devices to enhance the application flexibility. Trading flexibility for power efficiency, the three device classes suit any IoT use cases operating on the unlicensed radiofrequency spectrum from 433MHz to 928MHz.


Now the upgraded I-CUBE-LRWAN package provides the drivers for the new sx126x Semtech radio and also supports the sx1261dvk1bas, sx1262dvk1cas and sx1262dvk1das shields. Moreover, the package includes an application suitable to run on NUCLEO-L053R8, NUCLEO-L152RE, NUCLEO-L476RG and B-L072Z-LRWAN1 Discovery kits embedding the CMWX1ZZABZ-091 LoRa® /Sigfox™ module from Murata. The package also supports a USI® LoRaWAN™ technology module through the I-NUCLEO-LRWAN1 expansion board.


STMicroelectronics having more than 800 STM32 devices with almost 300 ultra-low-power STM32 variants, offers a wide range of options to optimize the performance and features of IoT devices that take full advantage of LoRaWAN services including connectivity, radio recognition, and GPS-free location.

I-CUBE-LRWAN software can be downloaded free from

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