diff --git a/Services/RFEmitter.c b/Services/RFEmitter.c
index e140be2..5c3f56d 100644
--- a/Services/RFEmitter.c
+++ b/Services/RFEmitter.c
@@ -1 +1,18 @@
 #include "RFEmitter.h"
+
+
+void RFEmitter_conf() {
+	
+	//On configure l'USART
+	Usart_conf(USART1);
+	
+	//On active l'USART
+	Usart_enable(USART1);
+	
+}
+
+void RFEmitter_send(char * message, int longueur) {
+	
+	Usart_send(USART1, message, longueur);
+	
+}
diff --git a/Services/RFEmitter.h b/Services/RFEmitter.h
index d76d926..3f092d7 100644
--- a/Services/RFEmitter.h
+++ b/Services/RFEmitter.h
@@ -1,4 +1,11 @@
 #ifndef RFEMITTER_H
 #define RFEMITTER_H
 
+#include "USART.h"
+
+void RFEmitter_conf(void);
+	
+void RFEmitter_send(char * message, int longueur);
+
 #endif
+
diff --git a/Services/Voltage.c b/Services/Voltage.c
index 603852b..b982d45 100644
--- a/Services/Voltage.c
+++ b/Services/Voltage.c
@@ -16,6 +16,6 @@ void Voltage_conf() {
 
 double Voltage_getVoltage() {
 	
-	ADC_readVolt(ADC2);
+	return ADC_readVolt(ADC2);
 	
-}
\ No newline at end of file
+}
diff --git a/Services/Voltage.h b/Services/Voltage.h
index ae8b4d2..bbb164f 100644
--- a/Services/Voltage.h
+++ b/Services/Voltage.h
@@ -4,8 +4,8 @@
 #include "ADC.h"
 #include "GPIO.h"
 
-void Voltage_conf();
+void Voltage_conf(void);
 
-double Voltage_getVoltage();
+double Voltage_getVoltage(void);
 
 #endif