diff --git a/demo/log/easylogger.c b/demo/log/easylogger.c
index 046bad5..50a93a0 100644
--- a/demo/log/easylogger.c
+++ b/demo/log/easylogger.c
@@ -43,9 +43,14 @@ int main(void){
     /* initialize EasyFlash and EasyLogger */
     if ((easyflash_init() == EF_NO_ERR)&&(elog_init() == ELOG_NO_ERR)) {
         /* set EasyLogger log format */
-        elog_set_fmt( ELOG_FMT_LVL | ELOG_FMT_TAG | ELOG_FMT_TIME /*| ELOG_FMT_P_INFO*/ | ELOG_FMT_T_INFO
-                            | ELOG_FMT_DIR /*| ELOG_FMT_FUNC*/| ELOG_FMT_LINE);
-        elog_set_filter_lvl(ELOG_LVL_VERBOSE);
+        elog_set_fmt(ELOG_LVL_ASSERT, ELOG_FMT_ALL & ~ELOG_FMT_P_INFO);
+        elog_set_fmt(ELOG_LVL_ERROR, ELOG_FMT_LVL | ELOG_FMT_TAG | ELOG_FMT_TIME);
+        elog_set_fmt(ELOG_LVL_WARN, ELOG_FMT_LVL | ELOG_FMT_TAG | ELOG_FMT_TIME);
+        elog_set_fmt(ELOG_LVL_INFO, ELOG_FMT_LVL | ELOG_FMT_TAG | ELOG_FMT_TIME);
+        elog_set_fmt(ELOG_LVL_DEBUG, ELOG_FMT_ALL & ~(ELOG_FMT_FUNC | ELOG_FMT_P_INFO));
+        elog_set_fmt(ELOG_LVL_VERBOSE, ELOG_FMT_ALL & ~(ELOG_FMT_FUNC | ELOG_FMT_P_INFO));
+        /* set EasyLogger assert hook */
+        elog_assert_set_hook(elog_user_assert_hook);
         /* initialize EasyLogger Flash plugin */
         elog_flash_init();
         /* start EasyLogger */
@@ -63,7 +68,7 @@ int main(void){
  * Elog demo
  */
 static void test_elog(void) {
-    /* output all saved log on flash */
+    /* output all saved log from flash */
     elog_flash_outout_all();
     /* test log output for all level */
     log_a("Hello EasyLogger!");