diff --git a/keil_project/Services/RFInput.c b/keil_project/Services/RFInput.c
index 5042ddd..9fb4057 100644
--- a/keil_project/Services/RFInput.c
+++ b/keil_project/Services/RFInput.c
@@ -60,12 +60,18 @@ void RF_INPUT_Init(void)
 	LL_TIM_EnableCounter(TIM4);
 }
 
-int RF_INPUT_GetValue1(void)
+int RF_INPUT_GetPeriodUs(void)
 {
 	return LL_TIM_ReadReg(TIM4, CCR1);
 }
 
-int RF_INPUT_GetValue2(void)
+int RF_INPUT_GetDutyTimeUs(void)
 {
 	return LL_TIM_ReadReg(TIM4, CCR2);
 }
+
+int RF_INPUT_GetDutyTimeRelative(void)
+{
+	int d = RF_INPUT_GetDutyTimeUs();
+	return (d - 1500) / 5;
+}