diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.h b/soft/PjtKEIL_StepSon/Src/GestionSon.h
new file mode 100644
index 0000000..a0068a5
--- /dev/null
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.h
@@ -0,0 +1,14 @@
+/**
+ * Bibliothèque comprenant les fonctions de gestion du son bruitverre.asm à travers GestionSon.s 
+ * Les fonctions présentes sont CallbackSon et StartSon
+ */
+#include "DriverJeuLaser.h"
+
+
+//**********************************************************************************************************
+//---------------------          FONCTIONS DE GESTION DU SON         --------------------------------------
+//**********************************************************************************************************
+
+void CallbackSon(void);
+
+void StartSon(void);
\ No newline at end of file
diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.s b/soft/PjtKEIL_StepSon/Src/GestionSon.s
index 9db345c..6932b1d 100644
--- a/soft/PjtKEIL_StepSon/Src/GestionSon.s
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.s
@@ -17,7 +17,7 @@ Index dcw 0
 ; ===============================================================================================
 	EXPORT SortieSon
 	EXPORT CallbackSon
-	;EXPORT StartSon
+	EXPORT StartSon
 	IMPORT Son
 	IMPORT LongueurSon
 	IMPORT PWM_Set_Value_TIM3_Ch3
@@ -67,12 +67,13 @@ Fin
 	endp
 
 
-;StartSon proc
-;	push {lr}
-;	ldr r3,=Index
-;	mov r1, #0
-;	strh r1,[r3]
-;	pop {pc}
+StartSon proc
+	push {lr}
+	ldr r3,=Index
+	mov r1, #0
+	strh r1,[r3]
+	pop {pc}
+	endp
 
 		
 		
diff --git a/soft/PjtKEIL_StepSon/Src/principal.c b/soft/PjtKEIL_StepSon/Src/principal.c
index 351c8ec..dbfaf06 100644
--- a/soft/PjtKEIL_StepSon/Src/principal.c
+++ b/soft/PjtKEIL_StepSon/Src/principal.c
@@ -1,9 +1,5 @@
 
-#include "DriverJeuLaser.h"
-
-void CallbackSon(void);
-
-//void StartSon(void);
+#include "GestionSon.h"
 
 int main(void)
 {
@@ -35,17 +31,19 @@ Active_IT_Debordement_Timer( TIM4, 2, CallbackSon );
 GPIO_Configure(GPIOB, 0, OUTPUT, ALT_PPULL);
 	
 GPIO_Configure(GPIOB, 1, OUTPUT, OUTPUT_PPULL);
+
+//Appel Startson tout les secondes. Enlevez le commentaire pour tester StartSon en simulation
+/*
+Timer_1234_Init_ff( TIM2, 72000000 );
+
+Active_IT_Debordement_Timer( TIM2, 2, StartSon );
+*/
 //============================================================================	
 	
 	
 	
 while	(1)
 	{
-		/*
-		for(int i = 0; i<99999; i++)
-		{
-			StartSon();
-		}*/
 	}
 }
 
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvoptx b/soft/PjtKEIL_StepSon/StepSon.uvoptx
index 59ac483..6e45982 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvoptx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvoptx
@@ -180,7 +180,7 @@
         <Mm>
           <WinNumber>1</WinNumber>
           <SubType>10</SubType>
-          <ItemText>R2</ItemText>
+          <ItemText>R3</ItemText>
           <AccSizeX>0</AccSizeX>
         </Mm>
       </MemoryWindow1>
@@ -230,12 +230,12 @@
         <Wi>
           <IntNumber>0</IntNumber>
           <FirstString>(PORTB &amp; 0x00000001)</FirstString>
-          <SecondString>008000000000000000000000000000000000F03F0000000000000000000000000000000028504F52544220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000001000000000000000000E03F0E00000000000000000000000000000000000000F20A0008</SecondString>
+          <SecondString>008000000000000000000000000000000000F03F0000000000000000000000000000000028504F52544220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000001000000000000000000E03F1900000000000000000000000000000000000000F20A0008</SecondString>
         </Wi>
         <Wi>
           <IntNumber>1</IntNumber>
           <FirstString>(SortieSon &amp; 0xFFFF) &gt;&gt; 0</FirstString>
-          <SecondString>000080000000000000000000000000000000884000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000003000000FFFFFFFFFFFFDF3F0E00000000000000000000000000000000000000CC090008</SecondString>
+          <SecondString>000080000000000000000000000000000000884000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000002000000FFFFFFFFFFFFDF3F1900000000000000000000000000000000000000CC090008</SecondString>
         </Wi>
       </LogicAnalyzers>
       <DebugDescription>