2 files changed, 25 insertions, 0 deletions
diff --git a/os/hal/include/st.h b/os/hal/include/st.h
index 05d382d93..b2cb00543 100644
--- a/os/hal/include/st.h
+++ b/os/hal/include/st.h
@@ -111,6 +111,17 @@
  * @api
  */
 #define stGetAlarm() st_lld_get_alarm()
+
+/**
+ * @brief   Determines if the alarm is active.
+ *
+ * @return              The alarm status.
+ * @retval false        if the alarm is not active.
+ * @retval true         is the alarm is active
+ *
+ * @api
+ */
+#define stIsAlarmActive() st_lld_is_alarm_active()
 /** @} */
 
 /*===========================================================================*/
diff --git a/os/hal/platforms/STM32/TIMv1/st_lld.h b/os/hal/platforms/STM32/TIMv1/st_lld.h
index 882472cb2..fb067f202 100644
--- a/os/hal/platforms/STM32/TIMv1/st_lld.h
+++ b/os/hal/platforms/STM32/TIMv1/st_lld.h
@@ -128,6 +128,20 @@ static inline systime_t st_lld_get_alarm(void) {
   return (systime_t)STM32_TIM2->CCR[0];
 }
 
+/**
+ * @brief   Determines if the alarm is active.
+ *
+ * @return              The alarm status.
+ * @retval false        if the alarm is not active.
+ * @retval true         is the alarm is active
+ *
+ * @notapi
+ */
+static inline bool st_lld_is_alarm_active(void) {
+
+  return (bool)((STM32_TIM2->DIER & STM32_TIM_DIER_CC1IE) != 0);
+}
+
 #endif /* _ST_LLD_H_ */
 
 /** @} */