STM32Cube embedded software is a basic set of software components like HAL, LL APIs, middleware and application examples.
The STM32 Cube expansion software contains embedded software components that complement the functionalities of the STM32Cube and/or enable the usage of a multitude of ST devices in domains such as of sensing, power management, connectivity or audio, together with the most appropriate STM32 MCUs.
These expansion packages build upon and are compatible with the STM32Cube embedded software libraries and tools and enable rapid application development based on proven and validated software elements.
The software packages contain the necessary software extensions as well as implementation examples running on some specific ST development boards. The software architecture allows quick and easy adaptation to user specific hardware configurations.