From cbda63c50065c49c374b4c19ff7ba599fee80b95 Mon Sep 17 00:00:00 2001
From: wuyangyong <wuyangyong@gmail.com>
Date: Mon, 22 Feb 2010 15:30:42 +0000
Subject: [PATCH] fix auto_restart if no USB cable

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@433 bbd45198-f89e-11dd-88c7-29a3b14d5316
---
 bsp/stm32_radio/Libraries/Mass_Storage/src/usb_main.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_main.c b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_main.c
index cf36d32f8c..81a079dc4f 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_main.c
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_main.c
@@ -16,7 +16,16 @@ extern rt_device_t dev_spi_flash;
 extern unsigned long test_unit_ready_last;
 void msc_thread_entry(void *parameter)
 {
-    test_unit_ready_last = rt_tick_get();
+    unsigned long test_unit_ready_start = rt_tick_get();
+    test_unit_ready_last = test_unit_ready_start;
+
+    /* wait connection */
+    while( test_unit_ready_last == test_unit_ready_start )
+    {
+        rt_thread_delay( RT_TICK_PER_SECOND );
+    }
+
+    /* wait remove */
     while(1)
     {
         rt_thread_delay( RT_TICK_PER_SECOND/2 );
-- 
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