diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.s b/soft/PjtKEIL_StepSon/Src/GestionSon.s
index db0ae7c..012fa80 100644
--- a/soft/PjtKEIL_StepSon/Src/GestionSon.s
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.s
@@ -36,8 +36,15 @@ CallbackSon proc
 	push {r4}
 	push {r5}
 	push {r6}
+	push {r7}
+	push {r8}
+	LDR r7,=LongueurSon
+	LDR r8,[r7]
 	
 	LDR r6,[r3] ; dans r6 la valeur de indextab
+	CMP r8,r6
+	BEQ Fin
+	
 	MOV r2, #2
 	MUL r2,r6,r2
 	LDRSH r4,[r1,r2] ; dans r4 l'adresse de son[r6]
@@ -56,14 +63,23 @@ CallbackSon proc
 	add r6,r6,#1
 	STR r6,[r3]
 	
+	pop {r8}
+	pop {r7}
+	pop {r6}
+	pop {r5}
+	pop {r4}
+	BX lr
+	
+Fin
+	MOV r2,#0
+	STR r2,[r0]
+	
+	pop {r8}
+	pop {r7}
 	pop {r6}
 	pop {r5}
 	pop {r4}
 	BX lr
 	endp
 
-
-
-		
-		
 	END	
\ No newline at end of file
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvoptx b/soft/PjtKEIL_StepSon/StepSon.uvoptx
index da50abb..fb2a3ed 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvoptx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvoptx
@@ -175,6 +175,21 @@
           <WinNumber>1</WinNumber>
           <ItemText>r0,0x0A</ItemText>
         </Ww>
+        <Ww>
+          <count>4</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>SortieSon</ItemText>
+        </Ww>
+        <Ww>
+          <count>5</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>r8,0x0A</ItemText>
+        </Ww>
+        <Ww>
+          <count>6</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>r6,0x0A</ItemText>
+        </Ww>
       </WatchWindow1>
       <MemoryWindow1>
         <Mm>
@@ -230,12 +245,12 @@
         <Wi>
           <IntNumber>0</IntNumber>
           <FirstString>`SortieSon</FirstString>
-          <SecondString>0080000000000000000000000000000000408F4000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000001000000000000000000E03F1900000000000000000000000000000000000000540A0008</SecondString>
+          <SecondString>0080000000000000000000000000000000408F4000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000001000000000000000000E03F1600000000000000000000000000000000000000540A0008</SecondString>
         </Wi>
         <Wi>
           <IntNumber>1</IntNumber>
           <FirstString>((portb &amp; 0x00000001) &amp; 0x1) &gt;&gt; 0</FirstString>
-          <SecondString>0080000000000000000000000000000000408F400000000000000000000000000000000028706F72746220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000002000000000000000000E03F1900000000000000000000000000000000000000B40A0008</SecondString>
+          <SecondString>0080000000000000000000000000000000408F400000000000000000000000000000000028706F72746220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000002000000000000000000E03F1600000000000000000000000000000000000000B40A0008</SecondString>
         </Wi>
       </LogicAnalyzers>
       <DebugDescription>
@@ -381,6 +396,13 @@
         </SetRegEntry>
       </TargetDriverDllRegistry>
       <Breakpoint/>
+      <WatchWindow1>
+        <Ww>
+          <count>0</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>SortieSon</ItemText>
+        </Ww>
+      </WatchWindow1>
       <MemoryWindow1>
         <Mm>
           <WinNumber>1</WinNumber>
@@ -409,7 +431,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>