Implementing External Interrupts (EXTI) on STM32 with Standard Peripheral Library
External interrupts allow a microcontroller to respond immediately too external events by pausing its current program execution, handling the interrupt request, and then resuming normal operation. The STM32 EXTI controller manages up to 20 interrupt/event lines, with GPIO pins 0-15 connected to EXTI lines 0-15. Additional lines serve specific p ...
Posted on Thu, 11 Jun 2026 17:08:35 +0000 by developerdave
STM32 External Interrupts and Timer Basics
Interrupt Fundamentals
An interrupt is a mechanism that temporarily suspends the main program execution when a specific interrupt condition is triggered. The CPU pauses the current task, executes an interrupt service routine (ISR), and then returns to continue the main program from where it left off.
Interrupt Priority
When multiple interrupt s ...
Posted on Sat, 06 Jun 2026 16:23:59 +0000 by pvechi