diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.s b/soft/PjtKEIL_StepSon/Src/GestionSon.s
index 283f96d..d71ead0 100644
--- a/soft/PjtKEIL_StepSon/Src/GestionSon.s
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.s
@@ -18,7 +18,7 @@
 		
 
 
-SortieSon dcw 0
+SortieSon dcd 0
 Index dcw 0
 
 	export SortieSon
@@ -39,38 +39,32 @@ timer_callback_son proc
 
 	push {lr,r4}
 
-	ldr r4,=Index
-	ldr r2,[r4]
-	mov r0, r2
-	ldr r1,=LongueurSon
-	ldr r2,[r1]
-	mov r1, r2
-	cmp r0, r1
+	ldr r4, =Index ; r4 = &Index 
+	ldr r0, [r4]   ; r0 = *r4 
+	ldr r1, =LongueurSon
+	ldr r2, [r1]
+	cmp r0, r2 
 	beq fin
 	
 	
-	ldr r3,=SortieSon
+	
 	ldr r2,=Son
 	
-	ldrsh r1,[r2,r0, lsl #1]
-	add r1,#32768 ; (1<<16)
+	ldrsh r1, [r2,r0, lsl #1]
+	add r1, #32768 ; (1<<16)
 	mov r2, #720
-	mul r1,r2
-	asr r1,#16
+	mul r1, r2
+	asr r1, #16
 	
-	
-	
-	mov r4, r0
-	mov r0, r1
-	bl PWM_Set_Value_TIM3_Ch3
-	;str r1, [r3] ;Mise à jour sortie son pas PWM
-	str r0, [r3] ;Mise à jour sortie son PWM
-	mov r0, r4
-	
- 	mov r3, r0
+	mov r3, r0
 	add r3, #1
 	str r3, [r4]
 	
+	ldr r3,=SortieSon
+	mov r0, r1
+	bl PWM_Set_Value_TIM3_Ch3
+	
+	str r0, [r3] ;Mise à jour sortie son pas PWM
 
 fin
 	pop {lr,r4}
diff --git a/soft/PjtKEIL_StepSon/Src/principal.c b/soft/PjtKEIL_StepSon/Src/principal.c
index 02cdac4..b817344 100644
--- a/soft/PjtKEIL_StepSon/Src/principal.c
+++ b/soft/PjtKEIL_StepSon/Src/principal.c
@@ -15,7 +15,6 @@ CLOCK_Configure();
 // configuration du Timer 4 en débordement 91 microsecondes
 	
 	Timer_1234_Init_ff( TIM4, 91*72);
-	Timer_1234_Init_ff( TIM3, 91*72);
 
 	int Periode_ticks = 720;
 	
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvoptx b/soft/PjtKEIL_StepSon/StepSon.uvoptx
index 486c71c..53cdb08 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvoptx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvoptx
@@ -75,7 +75,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>0</IsCurrentTarget>
+        <IsCurrentTarget>1</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -165,7 +165,7 @@
         <Mm>
           <WinNumber>1</WinNumber>
           <SubType>265</SubType>
-          <ItemText>&amp;SortieSon</ItemText>
+          <ItemText>r3</ItemText>
           <AccSizeX>0</AccSizeX>
         </Mm>
       </MemoryWindow1>
@@ -215,7 +215,12 @@
         <Wi>
           <IntNumber>0</IntNumber>
           <FirstString>(SortieSon &amp; 0xFFFF) &gt;&gt; 0</FirstString>
-          <SecondString>008000000000000000000000000000000000894000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000700000001000000000000000000F03F1400000000000000000000000000000000000000AE080008</SecondString>
+          <SecondString>008000000000000000000000000000000000894000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000700000001000000000000000000E03F1500000000000000000000000000000000000000AE080008</SecondString>
+        </Wi>
+        <Wi>
+          <IntNumber>1</IntNumber>
+          <FirstString>(PORTB &amp; 0x00000001)</FirstString>
+          <SecondString>00800000000000000000000000000000E0FFEF400000000000000000000000000000000028504F52544220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000002000000000000000000E03F1500000000000000000000000000000000000000540A0008</SecondString>
         </Wi>
       </LogicAnalyzers>
       <DebugDescription>
@@ -282,7 +287,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>1</IsCurrentTarget>
+        <IsCurrentTarget>0</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>