ST STM32F31xx - EXTI Firmware Driver Defines; Exti

External interrupt/event controller (EXTI)
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DocID023800 Rev 1
Return values
 None.
Notes
 None.
10.2.6.3 EXTI_GetITStatus
Function Name
ITStatus EXTI_GetITStatus ( uint32_t EXTI_Line)
Function Description
Checks whether the specified EXTI line is asserted or not.
Parameters
 EXTI_Line : specifies the EXTI line 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.
10.2.6.4 EXTI_ClearITPendingBit
Function Name
void EXTI_ClearITPendingBit ( uint32_t EXTI_Line)
Function Description
Clears the EXTI's line pending bits.
Parameters
 EXTI_Line : specifies the EXTI lines to clear. This parameter
can be any combination of EXTI_Linex where x can be
(0..20).
Return values
 None.
Notes
 None.
10.3 EXTI Firmware driver defines
10.3.1 EXTI
EXTI
EXTI_Lines
 #define: EXTI_Line0 ((uint32_t)0x00)