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EXTI: Added function to get flag status

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Austin Palmer 2013-02-21 12:13:57 -08:00 committed by Piotr Esden-Tempski
parent af8c5a85d6
commit 31aa3b6f5a
2 changed files with 9 additions and 0 deletions
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1
include/libopencm3/stm32/exti.h
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@ -71,6 +71,7 @@ void exti_enable_request(u32 extis);
void exti_disable_request(u32 extis); void exti_disable_request(u32 extis);
void exti_reset_request(u32 extis); void exti_reset_request(u32 extis);
void exti_select_source(u32 exti, u32 gpioport); void exti_select_source(u32 exti, u32 gpioport);
u32 exti_get_flag_status(u32 exti);
END_DECLS END_DECLS

8
lib/stm32/f1/exti.c
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@ -65,6 +65,14 @@ void exti_reset_request(u32 extis)
EXTI_PR |= extis; EXTI_PR |= extis;
} }
/*
* Check the flag of a given EXTI interrupt.
* */
u32 exti_get_flag_status(u32 exti)
{
return EXTI_PR & exti;
}
/* /*
* Remap an external interrupt line to the corresponding pin on the * Remap an external interrupt line to the corresponding pin on the
* specified GPIO port. * specified GPIO port.