For many years, microcontrollers have been a staple in various products, continuously revolutionizing their feature sets, reliability, and performance. Moore’s Law has brought 16- and 32-bit processing to even the smallest and most affordable consumer products. The presence of larger memory and CPU power has allowed the use of real-time operating systems (RTOS) where previously developers had to rely on “bare metal” coding. However, as products have evolved to become connected devices in the context of IoT, it has revealed fundamental shortcomings in the traditional methods of software development for microcontrollers. By Jonathan Williams.
The article then pays attention to:
- Consistent Device Reachability is Key in IoT Projects
- What is a Microvisor?
- Guaranteeing Device Availability for Firmware Updates
A microvisor is an IoT approach using hypervisors for microcontrollers, which enables reliable and secure remote operations, such as failsafe over-the-air firmware updates, on Internet-connected devices. Architecturally, a microvisor makes use of hardware separation within a microcontroller – such as the STM32U585 from ST – to divide it into two sections at boot time, e.g. by leveraging Arm® Trustzone®. Good read!
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