Posted on December 02, 2017 at 13:48
in the HAL manual both implement the same
&sharpdefine __HAL_GPIO_EXTI_CLEAR_IT (__EXT_LINE__) (EXTI->PR=(__EXTI_LINE__))
&sharpdefine __HAL_GPIO_EXTI_CLEAR_FLAG (__EXT_LINE__) (EXTI->PR=(__EXTI_LINE__))
what's the difference?
Also when using any of them the pending bit in the NVIC debug window in keil is not cleared, however it seems using Clear_IT actually works but still the pending bit in NVIC is not cleared.
what i'm trying to do is to wait for a pin to remain low for a specific time and then if the interrupt bit is not set during the time enable the EXTI interrupt.
I also tried using HAL_NVIC_ClearPendingIRQ but that didn't cleat the bit as well,
my board is the F1 Dicovery and using on board St link v1 .
can someone Please clarify on this , i'm very confused.
#irq-handler #nvic