External Interrupt/Event Line Mapping - ST STM32F100 Series Reference Manual

Advanced arm-based 32-bit mcus

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Interrupts and events

Software interrupt/event selection

The 18 lines can be configured as software interrupt/event lines. The following is the

procedure to generate a software interrupt.

Configure the mask bits of the 18 Interrupt/Event lines (EXTI_IMR, EXTI_EMR)

Set the required bit of the software interrupt register (EXTI_SWIER)

External interrupt/event line mapping

The 112 GPIOs are connected to the 16 external interrupt/event lines in the following

RM0041 Rev 6

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