diff --git a/bsl/csl/interfaces/timer.h b/bsl/csl/interfaces/timer.h
index b5f7baa..d375f71 100644
--- a/bsl/csl/interfaces/timer.h
+++ b/bsl/csl/interfaces/timer.h
@@ -31,16 +31,18 @@ typedef enum {
 	prescalerOutOfRange		/*!< Set prescaler value exeeds the Register's **HARDWARE** size */
 } timerError_t;
 
+/*! Enum of possible counting modes */
 typedef enum {
-	upCounting,
-	downCounting
+	upCounting,	/*!< Counter is in upcounting mode */
+	downCounting /*!< Counter is in downcounting mode */
 } timerCountDirection_t;
 
+/*! Enum of possible timer modes */
 typedef enum {
-	counter,
-	inputCapture,
-	outputCompare,
-	onePulse
+	counter,		/*!< Timer is in counting mode */
+	inputCapture,	/*!<  */
+	outputCompare,	/*!<  */
+	onePulse		/*!<  */
 } timerMode_t;
 
 /*!