The STM32 EXTI controller
The EXTI module in STM32 microcontrollers is designed to manage external interrupt lines. These lines can be triggered by signals on GPIO pins, enabling your microcontroller to react to changes in the external environment quickly and efficiently.
The EXTI controller is equipped with a range of features that enhance its flexibility and utility in embedded systems. Let’s explore these features in detail and understand their practical applications.
Key features of the EXTI
Here are the key features of the EXTI module that make it a versatile and powerful tool for managing external and internal events in STM32 microcontrollers:
- Provides up to 23 independent interrupt/event lines, with up to 16 from GPIO pins, and the rest from internal signals
- Each line can be independently configured as either an interrupt or an event
- Edge detection options for each line: rising, falling, or both edges
- Dedicated status flags for each line to...
