diff --git a/src/libusb_wrapper.c b/src/libusb_wrapper.c
index b996443..046fcdb 100644
--- a/src/libusb_wrapper.c
+++ b/src/libusb_wrapper.c
@@ -18,11 +18,12 @@ void usbclose(libusb_context *context) {
 void interfaceclaim(libusb_device_handle *handle, struct libusb_interface *interface){
     const struct libusb_interface_descriptor * interface_desc = &interface->altsetting[0]; //TODO enlever cette ligne, refactor
 
-    if(interface_desc->bInterfaceClass == LIBUSB_CLASS_VENDOR_SPEC)//ON PEUT VERIFIER LA CLASS
-        printf("> NOT vendor specific class\n");
+    if(interface_desc->bInterfaceClass == LIBUSB_CLASS_VENDOR_SPEC){//ON PEUT VERIFIER LA CLASS
+        printf("> vendor specific class\n");
 
-    int status=libusb_claim_interface(handle, interface_desc->bInterfaceNumber);
-    if(status!=0){ perror("libusb_claim_interface"); exit(-1); }
+    	int status=libusb_claim_interface(handle, interface_desc->bInterfaceNumber);
+    	if(status!=0){ perror("libusb_claim_interface"); exit(-1); }
+	}
 }
 
 void interfaceclose(libusb_device_handle *handle, struct libusb_interface *interface){
@@ -286,4 +287,4 @@ char getOnlyEndpoint(struct libusb_interface * interface){
         printf("> is NOT of type INTERRUPT\n");
 
     return (char)endpoint_desc->bEndpointAddress;
-}
\ No newline at end of file
+}
diff --git a/src/main.c b/src/main.c
index 5f65d91..8b53fcd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -96,16 +96,17 @@ int main(int argc, char *argv[]){
 
 
         /*LE CODE UTILE*/
-/*
-        char data[MAX_DATA];    // data to send or to receive
-        int size=...;           // size to send or maximum size to receive
-        int timeout=...;        // timeout in ms
+while(1){
+        unsigned char data[2] = {0xff,0xff};    // data to send or to receive
+        int size=2;           // size to send or maximum size to receive
+        int timeout=1000;        // timeout in ms
 
         //OUT interrupt, from host to device
         int bytes_out;
-        int status=libusb_interrupt_transfer(handle,endpoint_out,data,size,&bytes_out,timeout);
+	printf("%p %02X\n",device_handle,endpoint_leds);
+        int status=libusb_interrupt_transfer(device_handle,endpoint_leds,data,size,&bytes_out,timeout);
         if(status!=0){ perror("libusb_interrupt_transfer"); exit(-1); }
-*/
+}
         /*FIN DU CODE UTILE*/
 
         //Close
--
libgit2 0.21.2