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authorAustin Palmer2013-02-21 12:13:57 -0800
committerPiotr Esden-Tempski2013-03-01 10:36:57 -0800
commit31aa3b6f5a9e9afa4d1bc8661cbaef147af55f74 (patch)
tree8681dc56855c41e8aa66899f0c240d31a87a318f
parentaf8c5a85d68f1915982d156d4bdcebab278acf9e (diff)
EXTI: Added function to get flag status
-rw-r--r--include/libopencm3/stm32/exti.h1
-rw-r--r--lib/stm32/f1/exti.c8
2 files changed, 9 insertions, 0 deletions
diff --git a/include/libopencm3/stm32/exti.h b/include/libopencm3/stm32/exti.h
index 48065b9..6ecd0b6 100644
--- a/include/libopencm3/stm32/exti.h
+++ b/include/libopencm3/stm32/exti.h
@@ -71,6 +71,7 @@ void exti_enable_request(u32 extis);
void exti_disable_request(u32 extis);
void exti_reset_request(u32 extis);
void exti_select_source(u32 exti, u32 gpioport);
+u32 exti_get_flag_status(u32 exti);
END_DECLS
diff --git a/lib/stm32/f1/exti.c b/lib/stm32/f1/exti.c
index ecb58b8..5086274 100644
--- a/lib/stm32/f1/exti.c
+++ b/lib/stm32/f1/exti.c
@@ -66,6 +66,14 @@ void exti_reset_request(u32 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
* specified GPIO port.
*