diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.h b/soft/PjtKEIL_StepSon/Src/GestionSon.h
new file mode 100644
index 0000000..1aa2cf5
--- /dev/null
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.h
@@ -0,0 +1,2 @@
+extern void CallbackSon(void);
+extern void StartSon(void);
diff --git a/soft/PjtKEIL_StepSon/Src/principal.c b/soft/PjtKEIL_StepSon/Src/principal.c
index 78d61c0..a1f9448 100644
--- a/soft/PjtKEIL_StepSon/Src/principal.c
+++ b/soft/PjtKEIL_StepSon/Src/principal.c
@@ -1,7 +1,5 @@
 #include "DriverJeuLaser.h"
-
-extern void CallbackSon(void);
-extern void StartSon(void);
+#include "GestionSon.h"
 
 int main(void)
 {
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvoptx b/soft/PjtKEIL_StepSon/StepSon.uvoptx
index 9c08782..8ec3eb5 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvoptx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvoptx
@@ -215,7 +215,7 @@
         <Wi>
           <IntNumber>0</IntNumber>
           <FirstString>`SortieSon</FirstString>
-          <SecondString>0080000000000010572172410000005058E17A4100000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004100000001000000000000000000E03F170000000000000000000000000000000000000094080008</SecondString>
+          <SecondString>008000000000000000002640000000905D78864100000000000000000000000000000000536F72746965536F6E00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004100000001000000000000000000E03F170000000000000000000000000000000000000094080008</SecondString>
         </Wi>
         <Wi>
           <IntNumber>1</IntNumber>
@@ -644,6 +644,18 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>1</GroupNumber>
+      <FileNumber>2</FileNumber>
+      <FileType>5</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>.\Src\GestionSon.h</PathWithFileName>
+      <FilenameWithoutPath>GestionSon.h</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
   <Group>
@@ -654,7 +666,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>2</GroupNumber>
-      <FileNumber>2</FileNumber>
+      <FileNumber>3</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -674,7 +686,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>3</GroupNumber>
-      <FileNumber>3</FileNumber>
+      <FileNumber>4</FileNumber>
       <FileType>4</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -694,7 +706,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>4</GroupNumber>
-      <FileNumber>4</FileNumber>
+      <FileNumber>5</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -706,7 +718,7 @@
     </File>
     <File>
       <GroupNumber>4</GroupNumber>
-      <FileNumber>5</FileNumber>
+      <FileNumber>6</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
diff --git a/soft/PjtKEIL_StepSon/StepSon.uvprojx b/soft/PjtKEIL_StepSon/StepSon.uvprojx
index c69c3c5..cd77692 100644
--- a/soft/PjtKEIL_StepSon/StepSon.uvprojx
+++ b/soft/PjtKEIL_StepSon/StepSon.uvprojx
@@ -388,6 +388,11 @@
               <FileType>1</FileType>
               <FilePath>.\Src\principal.c</FilePath>
             </File>
+            <File>
+              <FileName>GestionSon.h</FileName>
+              <FileType>5</FileType>
+              <FilePath>.\Src\GestionSon.h</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>
@@ -812,6 +817,11 @@
               <FileType>1</FileType>
               <FilePath>.\Src\principal.c</FilePath>
             </File>
+            <File>
+              <FileName>GestionSon.h</FileName>
+              <FileType>5</FileType>
+              <FilePath>.\Src\GestionSon.h</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>
@@ -1305,6 +1315,11 @@
               <FileType>1</FileType>
               <FilePath>.\Src\principal.c</FilePath>
             </File>
+            <File>
+              <FileName>GestionSon.h</FileName>
+              <FileType>5</FileType>
+              <FilePath>.\Src\GestionSon.h</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>