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migmel
Associate III
March 4, 2022
Solved

Using EXTI on different port with the same pin number

  • March 4, 2022
  • 2 replies
  • 1085 views

Hello, is there any way to use EXTI simultaneously in different ports with the same pin number?

Examples for MCU STM32L071CB:

Using PA4 and PB4, or

Using PA10 and PB10, or

Using PA6 and PB6, and so on

This topic has been closed for replies.
Best answer by TDK

No, there is not. For a given pin number, only one port can have an active EXTI at a time.

This is a hardware limitation, see SYSCFG_EXTICRx for the underlying hardware limitation.

0693W00000KbMpyQAF.png

2 replies

TDK
TDKBest answer
March 4, 2022

No, there is not. For a given pin number, only one port can have an active EXTI at a time.

This is a hardware limitation, see SYSCFG_EXTICRx for the underlying hardware limitation.

0693W00000KbMpyQAF.png

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migmel
migmelAuthor
Associate III
March 4, 2022

Thank you for your quick response.

Regards,

Miguel