diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 7c45674..dc49ebc 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -7,7 +7,17 @@
             "problemMatcher": [],
             "group": {
                 "kind": "build",
-                "isDefault": true
+                "isDefault": false
+            }
+        },
+        {
+            "type": "shell",
+            "command": "cd build; cmake ../ -DLOG=1; make Flash",
+            "label": "Flash with LOG=1",
+            "problemMatcher": [],
+            "group": {
+                "kind": "build",
+                "isDefault": false
             }
         },
         {
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b55ba65..539e3dd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,7 @@ target_sources(host_cdc_msc_hid PUBLIC
         cdc_app.c
         diskio_USB.c
         diskio_SDIO.c
+        log_usb.c
         lib/FatFs/source/ff.c
         lib/FatFs/source/ffsystem.c
         lib/FatFs/source/diskio.c
@@ -75,3 +76,5 @@ add_custom_target(Flash
     DEPENDS host_cdc_msc_hid
     COMMAND sudo picotool load -f ${PROJECT_BINARY_DIR}/host_cdc_msc_hid.uf2
 )
+
+add_definitions(-DPICO_STDIO_ENABLE_CRLF_SUPPORT=0)
diff --git a/cdc_app.c b/cdc_app.c
index 4a13f8b..fac6649 100644
--- a/cdc_app.c
+++ b/cdc_app.c
@@ -26,6 +26,10 @@
 
 #include "tusb.h"
 #include "bsp/board_api.h"
+#include "log_usb.h"
+#include <stdio.h>
+
+volatile bool in_transfert_cb = 0;
 
 size_t get_console_inputs(uint8_t* buf, size_t bufsize) {
   size_t count = 0;
@@ -65,14 +69,38 @@ void cdc_app_task(void) {
 
 // Invoked when received new data
 void tuh_cdc_rx_cb(uint8_t idx) {
+  if(in_transfert_cb){
+    printf("already processing data\n");
+    return;
+  }
+
+  absolute_time_t current_time_us, start_time_us;
+	
+	start_time_us = get_absolute_time();
+
+  in_transfert_cb = 1;
   uint8_t buf[64 + 1]; // +1 for extra null character
+  char chaine[1024];
   uint32_t const bufsize = sizeof(buf) - 1;
 
   // forward cdc interfaces -> console
   uint32_t count = tuh_cdc_read(idx, buf, bufsize);
   buf[count] = 0;
 
-  printf("%s", (char*) buf);
+  log_analyse_input_string(buf, count);
+  log_get(chaine);
+
+  
+
+  current_time_us = get_absolute_time();
+  if(strlen(chaine)> 0){
+    printf("%s", chaine);
+    printf(">temp_rec:%d\n", current_time_us);
+    chaine[0] = '\0';
+  }
+
+
+  in_transfert_cb = 0;
 }
 
 // Invoked when a device with CDC interface is mounted
diff --git a/log_usb.c b/log_usb.c
new file mode 100644
index 0000000..4ce009d
--- /dev/null
+++ b/log_usb.c
@@ -0,0 +1,37 @@
+#include <string.h>
+
+char tampon[1020];
+char log_dispo[1020]={'\0'};
+unsigned int index_tampon=0;
+
+void log_analyse_input_string(const char * input_data, unsigned int str_len){
+    // On charge les données dans le tampon
+    // Si on a un message complet, on charge dans log dispo (s'il y a la place)
+    static int copy = 0;
+    for(int i=0; i< str_len; i++){
+        if(input_data[i] == '>'){
+            copy = 1;
+        }
+        if(copy == 1){
+            tampon[index_tampon] = input_data[i];
+            index_tampon++;
+
+
+            if(input_data[i] == '\n'){
+                copy = 0;
+                tampon[index_tampon] = '\0';
+                strcat(log_dispo, tampon);
+                index_tampon=0;
+            }
+        }
+        
+    }
+}
+
+// On renvoi la chaine et on remet log_dispo à 0;
+void log_get(char * chaine){
+    strcpy(chaine, log_dispo);
+    log_dispo[0] = '\0';
+}
+
+
diff --git a/log_usb.h b/log_usb.h
new file mode 100644
index 0000000..ccdc512
--- /dev/null
+++ b/log_usb.h
@@ -0,0 +1,2 @@
+void log_analyse_input_string(char * input_data, unsigned int str_len);
+void log_get(char * chaine);
\ No newline at end of file
diff --git a/main.c b/main.c
index f72623d..61bfa2d 100644
--- a/main.c
+++ b/main.c
@@ -161,8 +161,8 @@ int main(void) {
     led_blinking_task();
     cdc_app_task();
     hid_app_task();
-    log_to_sd(big_big_buffer);
-    log_to_usb(big_big_buffer); // à commenter pour obtenir un test juste sur la carte SD.(ou simplement ne pas brancher de clé USB)
+    //log_to_sd(big_big_buffer);
+    //log_to_usb(big_big_buffer); // à commenter pour obtenir un test juste sur la carte SD.(ou simplement ne pas brancher de clé USB)
     
   }
 }