diff --git a/Inc/general_tim.h b/Inc/general_tim.h
index a33bc44..e2ef945 100644
--- a/Inc/general_tim.h
+++ b/Inc/general_tim.h
@@ -185,6 +185,9 @@ typedef struct // struct with variables for encoder
     @endcode
   * @{
   */
+
+#define TIM_FreqToTick(_freq_, _timfreqMHz_)    ((1000000*_timfreqMHz_)/_freq_)
+
 /* Initialize TIM with TIM_SettingsTypeDef structure */
 HAL_StatusTypeDef TIM_Base_Init(TIM_SettingsTypeDef* stim);
 /* Initialize TIMs clock and interrupt */