diff --git a/soft/PjtKEIL_StepDeb_1/BacASable.uvoptx b/soft/PjtKEIL_StepDeb_1/BacASable.uvoptx
index ed76561..c1cf44c 100644
--- a/soft/PjtKEIL_StepDeb_1/BacASable.uvoptx
+++ b/soft/PjtKEIL_StepDeb_1/BacASable.uvoptx
@@ -10,7 +10,7 @@
     <aExt>*.s*; *.src; *.a*</aExt>
     <oExt>*.obj; *.o</oExt>
     <lExt>*.lib</lExt>
-    <tExt>*.txt; *.h; *.inc</tExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
     <pExt>*.plm</pExt>
     <CppX>*.cpp</CppX>
     <nMigrate>0</nMigrate>
@@ -75,7 +75,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>1</IsCurrentTarget>
+        <IsCurrentTarget>0</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -154,6 +154,21 @@
         </SetRegEntry>
       </TargetDriverDllRegistry>
       <Breakpoint/>
+      <WatchWindow1>
+        <Ww>
+          <count>0</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>VarTime</ItemText>
+        </Ww>
+      </WatchWindow1>
+      <MemoryWindow1>
+        <Mm>
+          <WinNumber>1</WinNumber>
+          <SubType>0</SubType>
+          <ItemText>0x20000000</ItemText>
+          <AccSizeX>0</AccSizeX>
+        </Mm>
+      </MemoryWindow1>
       <Tracepoint>
         <THDelay>0</THDelay>
       </Tracepoint>
@@ -174,7 +189,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>
@@ -196,6 +211,18 @@
       <pszMrulep></pszMrulep>
       <pSingCmdsp></pSingCmdsp>
       <pMultCmdsp></pMultCmdsp>
+      <LogicAnalyzers>
+        <Wi>
+          <IntNumber>0</IntNumber>
+          <FirstString>((portb &amp; 0x00000002) &gt;&gt; 1 &amp; 0x2) &gt;&gt; 1</FirstString>
+          <SecondString>00000000000000000000000000000000E0FFEF400100000000000000000000000000000028706F7274622026203078303030303030303229203E3E2031000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000001000000000000000000E03F240000000000000000000000000000000000000004010008</SecondString>
+        </Wi>
+        <Wi>
+          <IntNumber>1</IntNumber>
+          <FirstString>VarTime &gt;&gt; 1</FirstString>
+          <SecondString>FF00000000000000000000000000000080842E410000000000000000000000000000000056617254696D65000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000002000000000000000000E03F2400000000000000000000000000000000000000D8030008</SecondString>
+        </Wi>
+      </LogicAnalyzers>
       <DebugDescription>
         <Enable>1</Enable>
         <EnableFlashSeq>0</EnableFlashSeq>
@@ -260,7 +287,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>0</IsCurrentTarget>
+        <IsCurrentTarget>1</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -353,7 +380,7 @@
       <DebugFlag>
         <trace>0</trace>
         <periodic>1</periodic>
-        <aLwin>1</aLwin>
+        <aLwin>0</aLwin>
         <aCover>0</aCover>
         <aSer1>0</aSer1>
         <aSer2>0</aSer2>
diff --git a/soft/PjtKEIL_StepDeb_1/BacASable.uvprojx b/soft/PjtKEIL_StepDeb_1/BacASable.uvprojx
index 9c192f5..2318c0c 100644
--- a/soft/PjtKEIL_StepDeb_1/BacASable.uvprojx
+++ b/soft/PjtKEIL_StepDeb_1/BacASable.uvprojx
@@ -10,7 +10,7 @@
       <TargetName>Simu</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -424,7 +424,7 @@
       <TargetName>CibleSondeKEIL</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -1338,11 +1338,6 @@
     <Layers>
       <Layer>
         <LayName>&lt;Project Info&gt;</LayName>
-        <LayDesc></LayDesc>
-        <LayUrl></LayUrl>
-        <LayKeys></LayKeys>
-        <LayCat></LayCat>
-        <LayLic></LayLic>
         <LayTarg>0</LayTarg>
         <LayPrjMark>1</LayPrjMark>
       </Layer>
diff --git a/soft/PjtKEIL_StepDeb_1/Src/Delay.s b/soft/PjtKEIL_StepDeb_1/Src/Delay.s
index bf49175..b88d54f 100644
--- a/soft/PjtKEIL_StepDeb_1/Src/Delay.s
+++ b/soft/PjtKEIL_StepDeb_1/Src/Delay.s
@@ -10,17 +10,16 @@
 ;Section RAM (read write):
 	area    maram,data,readwrite
 		
-VarTime	dcd 0
-
+VarTime	dcd 0 ; adresse
 	
 ; ===============================================================================================
 	
 ;constantes (équivalent du #define en C)
-TimeValue	equ 900000
+TimeValue	equ 900000 ; valeur
 
 
 	EXPORT Delay_100ms ; la fonction Delay_100ms est rendue publique donc utilisable par d'autres modules.
-
+	export VarTime
 		
 ;Section ROM code (read only) :		
 	area    moncode,code,readonly
@@ -41,19 +40,19 @@ TimeValue	equ 900000
 
 Delay_100ms proc
 	
-	    ldr r0,=VarTime  		  
+	    ldr r0,=VarTime ; r0=VarTime(VarTime est une adresse) 		  
 						  
-		ldr r1,=TimeValue
-		str r1,[r0]
+		ldr r1,=TimeValue ; r1=TimeValue (TimeValue est une valeur)
+		str r1,[r0] ; TimeValue est stockée dans l'adresse stockée dans R0, c'est-à-dire dans VarTime
 		
 BoucleTempo	
-		ldr r1,[r0]     				
+		ldr r1,[r0] ; r1 = *r0     r1 = VarTime en C    				
 						
-		subs r1,#1
-		str  r1,[r0]
-		bne	 BoucleTempo
+		subs r1,#1 ; r1 = r1 - 1
+		str  r1,[r0] ; *r0 = r1     VarTime = r1 en C
+		bne	 BoucleTempo ; boucle while
 			
-		bx lr
+		bx lr ; on retourne à l'adresse stockée dans le registre lr
 		endp
 		
 		
diff --git a/soft/PjtKEIL_StepDeb_2/BacASable.uvoptx b/soft/PjtKEIL_StepDeb_2/BacASable.uvoptx
index f1315bb..4113915 100644
--- a/soft/PjtKEIL_StepDeb_2/BacASable.uvoptx
+++ b/soft/PjtKEIL_StepDeb_2/BacASable.uvoptx
@@ -10,7 +10,7 @@
     <aExt>*.s*; *.src; *.a*</aExt>
     <oExt>*.obj; *.o</oExt>
     <lExt>*.lib</lExt>
-    <tExt>*.txt; *.h; *.inc</tExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
     <pExt>*.plm</pExt>
     <CppX>*.cpp</CppX>
     <nMigrate>0</nMigrate>
@@ -75,7 +75,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>1</IsCurrentTarget>
+        <IsCurrentTarget>0</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -153,7 +153,24 @@
           <Name>-U066CFF574857847167074929 -O2254 -S0 -C0 -A0 -N00("ARM CoreSight SW-DP") -D00(1BA01477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO7 -FD20000000 -FC800 -FN1 -FF0STM32F10x_128.FLM -FS08000000 -FL020000 -FP0($$Device:STM32F103RB$Flash\STM32F10x_128.FLM)</Name>
         </SetRegEntry>
       </TargetDriverDllRegistry>
-      <Breakpoint/>
+      <Breakpoint>
+        <Bp>
+          <Number>0</Number>
+          <Type>0</Type>
+          <LineNumber>27</LineNumber>
+          <EnabledFlag>1</EnabledFlag>
+          <Address>134220352</Address>
+          <ByteObject>0</ByteObject>
+          <HtxType>0</HtxType>
+          <ManyObjects>0</ManyObjects>
+          <SizeOfObject>0</SizeOfObject>
+          <BreakByAccess>0</BreakByAccess>
+          <BreakIfRCount>1</BreakIfRCount>
+          <Filename>.\Src\Cligno.s</Filename>
+          <ExecCommand></ExecCommand>
+          <Expression>\\BacASable\Src/Cligno.s\27</Expression>
+        </Bp>
+      </Breakpoint>
       <Tracepoint>
         <THDelay>0</THDelay>
       </Tracepoint>
@@ -174,7 +191,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>
@@ -267,7 +284,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>0</IsCurrentTarget>
+        <IsCurrentTarget>1</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -374,7 +391,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>
diff --git a/soft/PjtKEIL_StepDeb_2/BacASable.uvprojx b/soft/PjtKEIL_StepDeb_2/BacASable.uvprojx
index d99d0f0..f01d9e2 100644
--- a/soft/PjtKEIL_StepDeb_2/BacASable.uvprojx
+++ b/soft/PjtKEIL_StepDeb_2/BacASable.uvprojx
@@ -10,7 +10,7 @@
       <TargetName>Simu</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -424,7 +424,7 @@
       <TargetName>CibleSondeKEIL</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -1338,11 +1338,6 @@
     <Layers>
       <Layer>
         <LayName>&lt;Project Info&gt;</LayName>
-        <LayDesc></LayDesc>
-        <LayUrl></LayUrl>
-        <LayKeys></LayKeys>
-        <LayCat></LayCat>
-        <LayLic></LayLic>
         <LayTarg>0</LayTarg>
         <LayPrjMark>1</LayPrjMark>
       </Layer>
diff --git a/soft/PjtKEIL_StepDeb_2/Src/Cligno.s b/soft/PjtKEIL_StepDeb_2/Src/Cligno.s
index 8a75b7a..f1b671a 100644
--- a/soft/PjtKEIL_StepDeb_2/Src/Cligno.s
+++ b/soft/PjtKEIL_StepDeb_2/Src/Cligno.s
@@ -1,7 +1,9 @@
 	PRESERVE8
 	THUMB   
 		
-
+	include Driver/DriverJeuLaser.inc
+	
+	export timer_callback
 ; ====================== zone de réservation de données,  ======================================
 ;Section RAM (read only) :
 	area    mesdata,data,readonly
@@ -9,7 +11,7 @@
 
 ;Section RAM (read write):
 	area    maram,data,readwrite
-		
+FlagCligno dcd 0
 
 	
 ; ===============================================================================================
@@ -19,12 +21,25 @@
 		
 ;Section ROM code (read only) :		
 	area    moncode,code,readonly
-; écrire le code ici		
+; écrire le code ici
 
-
-
-
-
-		
-		
-	END	
\ No newline at end of file
+timer_callback  
+				push {LR}
+				ldr r1, =FlagCligno
+				ldr r1,[r1]
+				MOV r0, #1 
+				CMP r1, #0
+				BEQ si_zero ;boucle si =1 
+				BL GPIOB_Set
+				MOV r1, #0
+				B fin
+			
+si_zero			BL GPIOB_Clear
+				MOV r1, #1
+			
+fin	     		ldr r2, =FlagCligno
+                str r1, [r2]
+				pop {LR}
+				BX LR
+			
+			END	
\ No newline at end of file
diff --git a/soft/PjtKEIL_StepDeb_2/Src/principal.c b/soft/PjtKEIL_StepDeb_2/Src/principal.c
index 4d726a1..27387a4 100644
--- a/soft/PjtKEIL_StepDeb_2/Src/principal.c
+++ b/soft/PjtKEIL_StepDeb_2/Src/principal.c
@@ -17,7 +17,8 @@ CLOCK_Configure();
 // configuration du Timer 4 en débordement 100ms
 	
 //** Placez votre code là ** // 
-	
+	Timer_1234_Init_ff(TIM4,7200000); 
+	Active_IT_Debordement_Timer(TIM4,2, timer_callback);
 	
 	
 // Activation des interruptions issues du Timer 4
@@ -42,20 +43,5 @@ while	(1)
 	}
 }
 
-char FlagCligno;
 
-void timer_callback(void)
-{
-	if (FlagCligno==1)
-	{
-		FlagCligno=0;
-		GPIOB_Set(1);
-	}
-	else
-	{
-		FlagCligno=1;
-		GPIOB_Clear(1);
-	}
-		
-}
 
diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.h b/soft/PjtKEIL_StepSon/Src/GestionSon.h
new file mode 100644
index 0000000..735639e
--- /dev/null
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.h
@@ -0,0 +1,5 @@
+#define GestionSon
+
+void CallbackSon (void)
+void StartSon (void)
+	
diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.s b/soft/PjtKEIL_StepSon/Src/GestionSon.s
index 8a75b7a..c59930d 100644
--- a/soft/PjtKEIL_StepSon/Src/GestionSon.s
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.s
@@ -1,7 +1,13 @@
 	PRESERVE8
 	THUMB   
 		
-
+	include Driver/DriverJeuLaser.inc
+	
+	export CallbackSon
+	export StartSon
+	import Son 
+	import LongueurSon
+	export SortieSon
 ; ====================== zone de réservation de données,  ======================================
 ;Section RAM (read only) :
 	area    mesdata,data,readonly
@@ -9,7 +15,9 @@
 
 ;Section RAM (read write):
 	area    maram,data,readwrite
-		
+SortieSon dcw 0
+Index dcd LongueurSon
+	
 
 	
 ; ===============================================================================================
@@ -21,10 +29,46 @@
 	area    moncode,code,readonly
 ; écrire le code ici		
 
+CallbackSon  ; corps de la fonction Callback
+				push {LR}
+				push {r4-r7}
+				ldr r0, =Son ; L'adresse du tableau de sons est stockée dans r0
+				ldr r1, =Index ; L'adresse de l'index de table est stockée dans r1
+				ldr r2, [r1] ; L'index actuel est stocké dans r2
+				ldr r3, =LongueurSon ; L'adresse de la taille du tableau est stockée dans r3-
+				ldr r4, [r3] ; La valeur de la taille du tableau est stockée dans r4
+				
+				cmp r2, r4 ; on vérifie qu'on n'est pas à la fin du tableau
+				beq fin
+				
+				ldr r5, =SortieSon ; L'adresse de sortie est stockée dans r5
+				ldrsh r6, [r0, r2, lsl #1] ; La valeur de l'échantillon pointée par l'index est stockée dans r6
+				mov r7, #720 ; Mise à l'échelle
+				mul r6, r7
+				asr r6, #16
+				add r6, #360
 
+				mov r0, r6				
+				add r2, r2, #1 ; Incrémentation de l'index
 
+				str r2, [r1] ; la nouvelle valeur de l'index est envoyée dans index
+				str r6, [r5] ; la valeur de l'échantillon est stockée dans SortieSon
+				bl PWM_Set_Value_TIM3_Ch3 ; Mise à jour du rapport cyclique dans le cas de l'utilisation de la PWM
+				
+fin				pop {r4-r7}
+				pop {LR}
+				bx LR
+				
+StartSon  ; corps de la fonction StartSon
+				ldr r1, =Index ; L'adresse de l'index de table est stockée dans r1
+				mov r2, #0  ; Mise à 0
+				str r2, [r1] ;  La nouvelle valeur de l'index (0) est envoyée dans index
+				bx LR
+		        
 
-
+	END	
 		
-		
-	END	
\ No newline at end of file
+; 8. Signal PWM à l'état haut (3,3V) si CompValue est supérieure au Compteur
+; Signal PWM à l'état bas (0V) si CompValue est inférieur au Compteur
+
+;15. Fc = 1/(2*pi*RC). On choisit R=1,8 kOhms et on trouve après calcul C=22,1 nF
\ No newline at end of file
diff --git a/soft/PjtKEIL_StepSon/Src/bruitverre.asm b/soft/PjtKEIL_StepSon/Src/bruitverre.asm
index bf5ba29..3cbf878 100644
--- a/soft/PjtKEIL_StepSon/Src/bruitverre.asm
+++ b/soft/PjtKEIL_StepSon/Src/bruitverre.asm
@@ -9,7 +9,7 @@
 		 export Son
 		 
 LongueurSon	 DCD 5512 
-PeriodeSonMicroSec	 DCD 91 
+PeriodeSonMicroSec DCD 91 
 Son 
 	 DCW 	   -6911
 	 DCW 	   20666
diff --git a/soft/PjtKEIL_StepSon/Src/principal.c b/soft/PjtKEIL_StepSon/Src/principal.c
index d09be75..a74ad51 100644
--- a/soft/PjtKEIL_StepSon/Src/principal.c
+++ b/soft/PjtKEIL_StepSon/Src/principal.c
@@ -2,8 +2,9 @@
 
 #include "DriverJeuLaser.h"
 
-
-
+void CallbackSon(void); //définie en langage d'assemblage
+extern void StartSon(void); 
+ int bouton =0 ; 
 int main(void)
 {
 
@@ -14,15 +15,27 @@ int main(void)
 // Après exécution : le coeur CPU est clocké à 72MHz ainsi que tous les timers
 CLOCK_Configure();
 
-
+//Configuration timer 4
+	Timer_1234_Init_ff(TIM4,6552); 
+	Active_IT_Debordement_Timer(TIM4,2, CallbackSon); 
+	
+//Configuration PWM
+	PWM_Init_ff (TIM3, 3, 720); // Fréquence de la PWM = PeriodeSonMicroSec / 720
 	
 	
+GPIO_Configure(GPIOB, 0, OUTPUT, ALT_PPULL);
+	
+StartSon();
 
 //============================================================================	
 	
 	
 while	(1)
 	{
+		if(bouton==1){
+		  StartSon();
+			bouton=0;
+		}
 	}
 }
 
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvoptx b/soft/PjtKEIL_StepSon/StepSon.uvoptx
index a13d7da..99e0f92 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvoptx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvoptx
@@ -10,7 +10,7 @@
     <aExt>*.s*; *.src; *.a*</aExt>
     <oExt>*.obj; *.o</oExt>
     <lExt>*.lib</lExt>
-    <tExt>*.txt; *.h; *.inc</tExt>
+    <tExt>*.txt; *.h; *.inc; *.md</tExt>
     <pExt>*.plm</pExt>
     <CppX>*.cpp</CppX>
     <nMigrate>0</nMigrate>
@@ -154,6 +154,14 @@
         </SetRegEntry>
       </TargetDriverDllRegistry>
       <Breakpoint/>
+      <MemoryWindow1>
+        <Mm>
+          <WinNumber>1</WinNumber>
+          <SubType>0</SubType>
+          <ItemText>0x200000A0</ItemText>
+          <AccSizeX>0</AccSizeX>
+        </Mm>
+      </MemoryWindow1>
       <Tracepoint>
         <THDelay>0</THDelay>
       </Tracepoint>
@@ -174,7 +182,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>
@@ -199,8 +207,13 @@
       <LogicAnalyzers>
         <Wi>
           <IntNumber>0</IntNumber>
-          <FirstString>((portb &amp; 0x00000002) &gt;&gt; 1 &amp; 0x2) &gt;&gt; 1</FirstString>
-          <SecondString>FF000000000000000000000000000000E0FFEF400100000000000000000000000000000028706F7274622026203078303030303030303229203E3E2031000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000001000000000000000000F03F160000000000000000000000000000000000000096020008</SecondString>
+          <FirstString>((portb &amp; 0x00000001) &amp; 0x1) &gt;&gt; 0</FirstString>
+          <SecondString>00800000000000000000000000000000E0FFEF400100000000000000000000000000000028706F72746220262030783030303030303031290000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000001000000000000000000E03F1700000000000000000000000000000000000000B40A0008</SecondString>
+        </Wi>
+        <Wi>
+          <IntNumber>1</IntNumber>
+          <FirstString>`SortieSon</FirstString>
+          <SecondString>FF0000000000000000000000000000000000894000000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000500000002000000000000000000E03F1700000000000000000000000000000000000000B40A0008</SecondString>
         </Wi>
       </LogicAnalyzers>
       <DebugDescription>
@@ -267,7 +280,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>0</IsCurrentTarget>
+        <IsCurrentTarget>1</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -346,6 +359,13 @@
         </SetRegEntry>
       </TargetDriverDllRegistry>
       <Breakpoint/>
+      <WatchWindow1>
+        <Ww>
+          <count>0</count>
+          <WinNumber>1</WinNumber>
+          <ItemText>bouton</ItemText>
+        </Ww>
+      </WatchWindow1>
       <MemoryWindow1>
         <Mm>
           <WinNumber>1</WinNumber>
@@ -374,7 +394,7 @@
         <AscS3>0</AscS3>
         <aSer3>0</aSer3>
         <eProf>0</eProf>
-        <aLa>0</aLa>
+        <aLa>1</aLa>
         <aPa1>0</aPa1>
         <AscS4>0</AscS4>
         <aSer4>0</aSer4>
@@ -460,7 +480,7 @@
       <OPTFL>
         <tvExp>1</tvExp>
         <tvExpOptDlg>0</tvExpOptDlg>
-        <IsCurrentTarget>1</IsCurrentTarget>
+        <IsCurrentTarget>0</IsCurrentTarget>
       </OPTFL>
       <CpuCode>18</CpuCode>
       <DebugOpt>
@@ -666,6 +686,38 @@
     </File>
   </Group>
 
+  <Group>
+    <GroupName>Son</GroupName>
+    <tvExp>1</tvExp>
+    <tvExpOptDlg>0</tvExpOptDlg>
+    <cbSel>0</cbSel>
+    <RteFlg>0</RteFlg>
+    <File>
+      <GroupNumber>4</GroupNumber>
+      <FileNumber>4</FileNumber>
+      <FileType>2</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>.\Src\bruitverre.asm</PathWithFileName>
+      <FilenameWithoutPath>bruitverre.asm</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+    <File>
+      <GroupNumber>4</GroupNumber>
+      <FileNumber>5</FileNumber>
+      <FileType>2</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>.\Src\GestionSon.s</PathWithFileName>
+      <FilenameWithoutPath>GestionSon.s</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+  </Group>
+
   <Group>
     <GroupName>::CMSIS</GroupName>
     <tvExp>0</tvExp>
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvprojx b/soft/PjtKEIL_StepSon/StepSon.uvprojx
index d0b5c10..33cf5aa 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvprojx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvprojx
@@ -10,7 +10,7 @@
       <TargetName>Simu</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -410,6 +410,21 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>Son</GroupName>
+          <Files>
+            <File>
+              <FileName>bruitverre.asm</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\bruitverre.asm</FilePath>
+            </File>
+            <File>
+              <FileName>GestionSon.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\GestionSon.s</FilePath>
+            </File>
+          </Files>
+        </Group>
         <Group>
           <GroupName>::CMSIS</GroupName>
         </Group>
@@ -419,7 +434,7 @@
       <TargetName>CibleSondeKEIL</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -819,6 +834,21 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>Son</GroupName>
+          <Files>
+            <File>
+              <FileName>bruitverre.asm</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\bruitverre.asm</FilePath>
+            </File>
+            <File>
+              <FileName>GestionSon.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\GestionSon.s</FilePath>
+            </File>
+          </Files>
+        </Group>
         <Group>
           <GroupName>::CMSIS</GroupName>
           <GroupOption>
@@ -897,7 +927,7 @@
       <TargetName>CibleSondeST</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
+      <pCCUsed>5060960::V5.06 update 7 (build 960)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
@@ -1297,6 +1327,21 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>Son</GroupName>
+          <Files>
+            <File>
+              <FileName>bruitverre.asm</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\bruitverre.asm</FilePath>
+            </File>
+            <File>
+              <FileName>GestionSon.s</FileName>
+              <FileType>2</FileType>
+              <FilePath>.\Src\GestionSon.s</FilePath>
+            </File>
+          </Files>
+        </Group>
         <Group>
           <GroupName>::CMSIS</GroupName>
         </Group>
@@ -1322,12 +1367,7 @@
   <LayerInfo>
     <Layers>
       <Layer>
-        <LayName>&lt;Project Info&gt;</LayName>
-        <LayDesc></LayDesc>
-        <LayUrl></LayUrl>
-        <LayKeys></LayKeys>
-        <LayCat></LayCat>
-        <LayLic></LayLic>
+        <LayName>StepSon</LayName>
         <LayTarg>0</LayTarg>
         <LayPrjMark>1</LayPrjMark>
       </Layer>
diff --git a/soft/PjtKEIL_StepSon/spice/PWM.asc b/soft/PjtKEIL_StepSon/spice/PWM.asc
new file mode 100644
index 0000000..5cbcda5
--- /dev/null
+++ b/soft/PjtKEIL_StepSon/spice/PWM.asc
@@ -0,0 +1,68 @@
+Version 4
+SHEET 1 1084 820
+WIRE 208 16 96 16
+WIRE 784 16 208 16
+WIRE 944 16 864 16
+WIRE 1008 16 944 16
+WIRE -368 80 -512 80
+WIRE 96 96 96 16
+WIRE 944 144 944 16
+WIRE -512 176 -512 80
+WIRE 96 224 96 176
+WIRE 944 256 944 208
+WIRE -512 304 -512 256
+WIRE 96 384 -48 384
+WIRE -48 480 -48 384
+WIRE -48 608 -48 560
+FLAG -512 304 0
+FLAG -368 80 Compteur
+FLAG 944 256 0
+FLAG 1008 16 Filtre
+FLAG -48 608 0
+FLAG 96 384 CompValue
+FLAG 208 16 PWM
+FLAG 96 224 0
+SYMBOL voltage -512 160 R0
+WINDOW 3 -372 78 Left 2
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR Value PULSE(0 3.3 0 5u 0 0 5u)
+SYMATTR InstName V1
+SYMBOL cap 928 144 R0
+SYMATTR InstName C1
+SYMATTR Value 10n
+SYMBOL res 880 0 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 3.9k
+SYMBOL voltage -48 464 R0
+WINDOW 3 49 61 Left 2
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR Value SINE(1.65 1 2k)
+SYMATTR InstName V2
+SYMBOL bv 96 80 R0
+SYMATTR InstName B1
+SYMATTR Value V=if(V(CompValue)>V(Compteur),3.3,0)
+TEXT 272 256 Left 2 !;ac dec 100 1 10meg
+TEXT 272 296 Left 2 !.tran 0 1.5m 0 0.01u
+TEXT -880 40 Left 2 ;Compteur de l'unité Timer
+TEXT -96 -24 Left 2 ;Partie PWM de l'unité Timer
+TEXT -904 -56 Left 4 ;TIMER3
+TEXT 688 80 Left 4 ;PB0
+TEXT 480 0 Left 2 ;Chanel 3
+TEXT 384 -168 Left 5 ;STM32F103
+LINE Normal 688 48 752 -16
+LINE Normal 688 -16 688 48
+LINE Normal 752 48 688 -16
+LINE Normal 752 48 752 48
+LINE Normal 720 -208 720 -16
+LINE Normal 256 -208 720 -208
+LINE Normal 720 784 720 48
+LINE Normal 720 784 720 784
+LINE Normal 720 816 720 784
+RECTANGLE Normal -192 352 -912 16 2
+RECTANGLE Normal 592 656 -128 -48 2
+RECTANGLE Normal 640 736 -976 -96
+RECTANGLE Normal 752 48 688 -16