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-rw-r--r--src/stm/ao_exti.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/stm/ao_exti.h b/src/stm/ao_exti.h
index 4f3e6132..8aa2bdca 100644
--- a/src/stm/ao_exti.h
+++ b/src/stm/ao_exti.h
@@ -21,6 +21,7 @@
#define AO_EXTI_MODE_RISING 1
#define AO_EXTI_MODE_FALLING 2
+#define AO_EXTI_MODE_PULL_NONE 0
#define AO_EXTI_MODE_PULL_UP 4
#define AO_EXTI_MODE_PULL_DOWN 8
#define AO_EXTI_PRIORITY_LOW 16