Confirmation on EXTI limitiation

[sarun]

I want to confirm the limitations of GPIO interrupts on STM32 devices.

I am using an STM32H7 device, and observed that interrupts cannot be configured for PA0 and PB0 at the same time.  I could not find any confirmation regarding this in the device datasheet,can anyone give me the confirmation on this.

[STTwo-32]

Hello @sarun 

PA0 and PB0 and so on, are connected to Line0, so you can use only one pin at one time to handle interrupt from there.

Best Regards.

STTwo-32 

[mƎALLEm]

Hello @sarun ,

If you refer to the reference manual / SYSCFG_EXTICR[n] register, you find that only one IO on x position could be configured as EXTI input at a time:

[sarun]

Thank you for the support  @mƎALLEm  @STTwo-32