The STM32 Getting Started – Registers Level programming is concerned with direct programming of STM32 registers without HAL library, using CMSIS and C-programming base project. This particular level of programming is an excellent way to get started with STM32 MCUs, it allows you understand and appreciate the low-level MCU Architecture and direct hardware level interactions. Register level programming knowledge is a must for people pursuing a career in Embedded STM32 Programming. In fact, HAL library implements Register Level code internally. In industry, having a deep level of understanding for the MCU is vital for producing highly reliable systems. Furthermore, at advanced industrial level, HAL libraries might not be certified for use, thus some independent libraries must be written based on Register Level, such as Space and Aviation industry.