From 013e5bd4111ac8b88957b48d98be44c0afa045e1 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Fri, 23 Feb 2018 15:24:27 +0800
Subject: [PATCH] [Components][Finsh] Add shell getchar received error process.

---
 components/finsh/shell.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index d1fadd7221..2a0637ec2c 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -541,8 +541,8 @@ void finsh_thread_entry(void *parameter)
             }
         }
 
-        /* handle CR key */
-        if (ch == '\0') continue;
+        /* received null or error */
+        if (ch == '\0' || ch == 0xFF) continue;
         /* handle tab key */
         else if (ch == '\t')
         {