diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c18dd8d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__pycache__/
diff --git a/main.c b/main.c
index c97568d..337f533 100644
--- a/main.c
+++ b/main.c
@@ -57,6 +57,7 @@ static void stats_module(){
         exit(-1);
     }
 
+    printf("Retrieving random values...\n");
     for (size_t i = 0; i < 100; i++){
         status = send_uart(&s_prng);
         //printf("%d %d %llu %llu\n", s_prng->p, s_prng->q, s_prng->seed, s_prng->output);
@@ -66,6 +67,7 @@ static void stats_module(){
         write(fd, str, strlen(str));
         write(fd, "\n", 1);
     }
+    printf("finish to get random values\n");
     close(fd);
 
 }