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STM32WL5x, The 1st Wireless MCU with Embedded Multi-Modulation LoRa Radio, Now With Dual Core

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One more challenge originates from the requirement to certify elements. A little start-up dealing with an IoT task tends to focus on one of the most simple method. Hereof, the STM32WLE as well as its single-core design is a great answer. We recently saw an automated rubber collection system that used the MCU to send alerts to the cloud. This smart agriculture system used the STM32WLE and also relied on LoRa to help farmers maximize their operations. The system is a preferred and high-volume product due to the incorporated nature of the microcontroller and its single-core architecture that made it simple to develop a proof-of-concept.

ST made a decision to use the Cortex-M0+ for a myriad of reasons, but two specifically stand out. Of all, the dual-core approach offered similar performance and a more cost-effective structure for sub-gigahertz applications than the use of one larger core. Secondly of all, we recognized the requirement of integrating a hardware platform geared towards protection. The new STM32WL5x thus offers hardware isolation between each core as well as a key management service. The system stores and manages user application keys in a secure area for greater security. It also enables features like authenticity verification, strong data decryption, and data integrity monitoring. The dual-core STM32WL5x also comes with many of our STM32Trust features, such as secure firmware install and update. Additionally, it has two very useful unique IDs (64-bit and 96-bit) and it offers multiple protection levels against read and write operations.
2 Different Approaches to the Cortex-M0+.

The first obstacle for a lot of teams is the capacity ahead up with a proof-of-concept swiftly. Being able to show how to use these two cores will be essential when convincing supervisors. Therefore, ST is introducing its NUCLEO-WL55JC1, the initial growth board with an STM32WL55JC.

The response from ST’s customers has been both positive and creative, with some using the STM32WL in an unexpected fashion. Most systems use the Cortex-M0+ for their sub-gigahertz protocol and the Cortex-M4 for their application. However, thanks to the flexibility of our implementation, some ST partners did the exact opposite. Some companies chose to enjoy the security benefits of the Cortex-M0+ for their sensitive application layers. Their teams then put the radio stack on the Cortex-M4, thus releasing a more secure and cost-effective solution for their application. Engineers are always trying to adapt to new security demands while making their products more accessible. The new dual-core architecture of the STM32WL offers them a new tool to reach their objective.

ST just recently introduced the STM32WL5x, a dual-core version of the STM32WL, the first cordless MCU with an embedded multi-modulation radio (LoRa, (G) FSK, (G) MSK, BPSK). The brand-new designs offer a Cortex-M0+ and also a Cortex-M4 core for greater adaptability and also safety and security. We additionally released an update to the STM32CubeWL MCU package that includes a Sigfox stack. Thus, designers will be able to capitalize on the inflection schemes available and also lower their time to market. The increased polyvalence of the STM32WL series additionally opens the door to brand-new applications for smart cities or smart farming, among others. Let’s look at the journey that would lead engineers and decision-makers to choose an STM32WL5x.

Prototyping Starts Here

On the software application side, the most recent variation of STM32CubeWL consists of application instances for this new Nucleo board to hasten developments. We provide a reference template to help build software that takes advantage of the two cores. Additionally, STM32CubeMX obtained an upgrade enabling the arrangement of the LoRaWAN and Sigfox heaps straight from the energy. We also provide demonstration programs that can send out sensor data to a portal or “Concentrator.” Because seeing is believing, a trial application running on this Nucleo board is the fastest method to reveal why the dual-core variation of the STM32WL brings better versatility as well as protection to tasks.

STM32WL5x: A Completely Open Up Dual-Core Style for Greater Adaptability

2 Cores to Stay Clear Of Re-Certification With Every Update

When a large corporation works on a myriad of projects and supports multiple protocols, using one device for all of them is a tremendous asset. Without a doubt, the requirement to certify just one element implies a greater roi and also a faster time to market. With the STM32WL5x, groups can develop an application for the Cortex-M4 and also use a different sub-gigahertz procedure on the Cortex-M0+ to match their requirements. Additionally, it allows them to check numerous protocols extra easily.
STM32WL5x: A Cortex-M0+ for Even More Safety

2 Reasons Behind our Dual-Core Design

The initial STM32WL that we launched in January 2020 has a solitary Cortex-M4 that runs whatever. Engineers that don’t need to upgrade their application frequently tend to prefer such design for its simpleness. Some teams with more demanding constraints could have felt trapped. Allow’s take the instance of a product that needs constant upgrades. If the network and applications heaps get on the very same core, modifying the code implies re-certifying the communication procedure. Thanks to the dual-core architecture of the STM32WL5x, programmers sidestep this trouble. Engineers can put the network stack on the Cortex-M0+ and run the application on the Cortex-M4. Updating the latter doesn’t automatically trigger the need to re-certify the network stack.

Michal Pukala
Electronics and Telecommunications engineer with Electro-energetics Master degree graduation. Lightning designer experienced engineer. Currently working in IT industry.