diff --git a/bsp/stm32f20x/Drivers/24LCxx.c b/bsp/stm32f20x/Drivers/24LCxx.c
index 278ccfecb7..9bb8e9caf9 100644
--- a/bsp/stm32f20x/Drivers/24LCxx.c
+++ b/bsp/stm32f20x/Drivers/24LCxx.c
@@ -1,3 +1,17 @@
+/*
+ * File      : 24LCxx.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2011-09-21     JoyChen      First version, support 24LC024H eeprom device
+ */
+
 #include <rtthread.h>
 #include "i2c.h"
 
diff --git a/bsp/stm32f20x/Drivers/i2c.c b/bsp/stm32f20x/Drivers/i2c.c
index 63dc5f0f7f..eda977f743 100644
--- a/bsp/stm32f20x/Drivers/i2c.c
+++ b/bsp/stm32f20x/Drivers/i2c.c
@@ -1,3 +1,16 @@
+/*
+ * File      : i2c.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2011-09-21     JoyChen      First version, support I2C1
+ */
 
 #include <rtthread.h>
 #include "i2c.h"