GPIO IRQ call back handle pin - PA6 ,PI-6 ,Pj6

[Rajesh Kannan]

I am using STM32H750 MCU . I configured 14 GPIO as interrupt and handle in HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)

function. In few GPIO pin number is same and different port .(PA6 , PI6 and PJ6).

How to find proper interrupt PIN?

[TDK · Accepted solution]

You cannot have multiple ports with the same pin number trigger an interrupt. For example, PA6 and PB6 cannot both be set to trigger an interrupt.

See SYSCFG_EXTICRx for the underlying hardware limitation.