使用get_timestamp/set_timestamp跳过了device_open，RTC未被正常初始化，导致系统死机

components/drivers/rtc/rtc.c

@@ -337,21 +337,21 @@ static void date(int argc, char **argv)
             return;
         }
         /* save old timestamp */
-        err = get_timestamp(&old);
-        if (err != RT_EOK)
+        err = time(&old);
+        if (err < 0)
         {
             rt_kprintf("Get current timestamp failed. %d\n", err);
             return;
         }
         /* converts the local time into the calendar time. */
         now = mktime(&tm_new);
-        err = set_timestamp(now);
+        err = stime(&now);
         if (err != RT_EOK)
         {
             rt_kprintf("set date failed. %d\n", err);
             return;
         }
-        get_timestamp(&now); /* get new timestamp */
+        time(&now);
         rt_kprintf("old: %.*s", 25, ctime(&old));
         rt_kprintf("now: %.*s", 25, ctime(&now));
     }