Do I Need a Secure Element If My MCU Has a Crypto Accelerator?
Why a hardware accelerator and a secure element aren’t substitutes for each other, when one is enough, and when you actually want both.
Quick Take
Is SysTick Accurate Enough for Microsecond Timing?
What SysTick gets right at microsecond resolution, what bites you, and when to reach for a hardware timer instead.
Why Does My Code Work in Debug But Break in Release?
The four usual suspects when code works at -O0 and breaks at -O2, in the order to check them.
What Actually Happens Before main() Runs?
The six things that happen between reset and main() on a typical Cortex-M, in order, and what goes wrong at each stage.