ST STM32F2 User Manual

LL EXTI Generic Driver
UM1940
920/1371
DocID028236 Rev 2
LL_EXTI_LINE_16
LL_EXTI_LINE_18
LL_EXTI_LINE_19
LL_EXTI_LINE_20
LL_EXTI_LINE_21
LL_EXTI_LINE_22
Return values
None:
Notes
The configurable wakeup lines are edge-triggered. No glitch
must be generated on these lines. If a Falling edge on a
configurable interrupt line occurs during a write operation in
the EXTI_FTSR register, the pending bit is not set. Rising and
falling edge triggers can be set for the same interrupt line. In
this case, both generate a trigger condition.
Please check each device line mapping for EXTI Line
availability
Reference Manual to
LL API cross
reference:
FTSR FTx LL_EXTI_DisableFallingTrig_0_31
LL_EXTI_IsEnabledFallingTrig_0_31
Function name
__STATIC_INLINE uint32_t
LL_EXTI_IsEnabledFallingTrig_0_31 (uint32_t ExtiLine)
Function description
Check if falling edge trigger is enabled for Lines in range 0 to 31.
Parameters
ExtiLine: This parameter can be a combination of the
following values:
LL_EXTI_LINE_0
LL_EXTI_LINE_1
LL_EXTI_LINE_2
LL_EXTI_LINE_3
LL_EXTI_LINE_4
LL_EXTI_LINE_5
LL_EXTI_LINE_6
LL_EXTI_LINE_7
LL_EXTI_LINE_8
LL_EXTI_LINE_9
LL_EXTI_LINE_10
LL_EXTI_LINE_11
LL_EXTI_LINE_12
LL_EXTI_LINE_13
LL_EXTI_LINE_14
LL_EXTI_LINE_15
LL_EXTI_LINE_16
LL_EXTI_LINE_18
LL_EXTI_LINE_19
LL_EXTI_LINE_20
LL_EXTI_LINE_21
LL_EXTI_LINE_22
Return values
State: of bit (1 or 0).

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English