If you are diving into learning this ecosystem, keep these community-vetted tips in mind:
(Joseph Yiu): A fantastic companion piece to understand the hardware architecture that powers STM32 chips. Mastering STM32
(Carmine Noviello): Highly recommended by the embedded community as the best structured guide to understanding the official ST Hardware Abstraction Layer (HAL). You can find the digital version directly on Leanpub . If you are diving into learning this ecosystem,
: While vendor libraries save time, learning to manipulate registers directly gives you true hardware mastery. To help find exactly what you need: Mastering STM32
Are you a to microcontrollers, or are you transitioning from Arduino ?