Straightforward implementation of External interrupts using HAL API, STM32. To get the whole tutorial of the STM32 for beginners, please visit π€π€steppeschool.com/courses/stm326 0:00 Introduction to Nested vectored Interrupt Controller (NVIC) 2:35 Extended Interrupts and events controller (EXTI) 4:32 Configuration of the External Interrupt using HAL API 6:01 Finding the right callback function 9:03 Defining a new callback function 10:04 Controlling the LED inside the Callback function