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A dedicated performance counter for Cortex-M systick. It shares the SysTick with users' original SysTick function without interfering it. This library will bring new functionalities, such as performance counter, delay_us and clock() service defined in time.h
This is a project for the Operating Systems for Embedded Systems course at Politecnico di Torino in the academic year 2022/2023. The topic for this year's course was Hardware Security. Our project is "Secure bootstrapping for ARM MCUs". We implemented a lightweight secure boot process which is based on performance counters.