Changed CurrentTime to a static variable and added function for getting the current time instead

Global variables are really bad practice and should be avoided

right/src/timer.h

@@ -9,13 +9,10 @@
 
     #define TIMER_INTERVAL_MSEC 1
 
-// Variables:
-
-    extern volatile uint32_t CurrentTime;
-
 // Functions:
 
     void Timer_Init(void);
+    uint32_t Timer_GetCurrentTime();
     void Timer_SetCurrentTime(uint32_t *time);
     uint32_t Timer_GetElapsedTime(uint32_t *time);
     uint32_t Timer_GetElapsedTimeAndSetCurrent(uint32_t *time);