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UM1581

External interrupt/event controller (EXTI)

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10.2.5.4 EXTI_GenerateSWInterrupt

Function Name

void EXTI_GenerateSWInterrupt ( uint32_t EXTI_Line)

Function Description

Generates a Software interrupt on selected EXTI line.

Parameters

 EXTI_Line : specifies the EXTI line on which the software

interrupt will be generated. This parameter can be any

combination of EXTI_Linex where x can be (0..20).

Return values

 None.

Notes

 None.

10.2.6 Interrupts and flags management functions

10.2.6.1 EXTI_GetFlagStatus

Function Name

FlagStatus EXTI_GetFlagStatus ( uint32_t EXTI_Line)

Function Description

Checks whether the specified EXTI line flag is set or not.

Parameters

 EXTI_Line : specifies the EXTI line flag to check. This

parameter can be any combination of EXTI_Linex where x

can be (0..20).

Return values

 The new state of EXTI_Line (SET or RESET).

Notes

 None.

10.2.6.2 EXTI_ClearFlag

Function Name

void EXTI_ClearFlag ( uint32_t EXTI_Line)

Function Description

Clears the EXTI's line pending flags.

Parameters

 EXTI_Line : specifies the EXTI lines flags to clear. This

parameter can be any combination of EXTI_Linex where x

can be (0..20).

ST STM32F31xx User Manual

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