ARM STM32 Study Note_9/EXTI

-EXTI




-How the external interrupt line mapped:






-EXTI structure:










 -EXTI_Line: enable or disable the external lines
 -EXTI_Mode:

 -EXTI_Trigger:trigger signal active edge

 -EXTI_LineCmd: define the new state of the selected line

-Selecting the pin to be exti