Tuesday , November 4 2025

#5 – Stm32f4 Gpio Exti Examples

Example 1: (PA0 gpio input, pull down) The Exti runs as long as triggering thorough PA0 pin.

Example 2: (PC9 GPIO_EXTI9, rising edge, pull down) In the beginning, the Exti runs if the button is pressed once or if the PC9 pin is triggered. Then the Exti doesn’t run and the process is updated by next trigger.

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