diff --git a/bsp/stm3210/project_filesystem/startup.c b/bsp/stm3210/project_filesystem/startup.c
index 36fe4b37a033751e2217e8d459f3c2485018d878..fcc5e453bc0cbd99c27bac70b1df20923198dd4a 100644
--- a/bsp/stm3210/project_filesystem/startup.c
+++ b/bsp/stm3210/project_filesystem/startup.c
@@ -96,8 +96,6 @@ void rtthread_startup(void)
 	/* init scheduler system */
 	rt_system_scheduler_init();
 
-	/* init hardware serial device */
-	rt_hw_usart_init();
 	/* init sdcard driver */
 #if STM32_USE_SDIO
 	rt_hw_sdcard_init();
diff --git a/bsp/stm3210/project_filesystem/stm32f10x_it.c b/bsp/stm3210/project_filesystem/stm32f10x_it.c
index 5b131ea50ff69606febc852db9c8be3bb2ccb8b1..8411987ae9758a33ef3abe3eab169a08c1a1f67a 100644
--- a/bsp/stm3210/project_filesystem/stm32f10x_it.c
+++ b/bsp/stm3210/project_filesystem/stm32f10x_it.c
@@ -156,31 +156,6 @@ void DMA1_Channel2_IRQHandler(void)
 #endif
 }
 
-/*******************************************************************************
-* Function Name  : DMA1_Channel6_IRQHandler
-* Description    : This function handles DMA1 Channel 6 interrupt request.
-* Input          : None
-* Output         : None
-* Return         : None
-*******************************************************************************/
-void DMA1_Channel6_IRQHandler(void)
-{
-#ifdef RT_USING_UART2
-    extern struct rt_device uart2_device;
-	extern void rt_hw_serial_dma_rx_isr(struct rt_device *device);
-
-    /* enter interrupt */
-    rt_interrupt_enter();
-
-    /* clear DMA flag */
-    DMA_ClearFlag(DMA1_FLAG_TC6 | DMA1_FLAG_TE6);
-    rt_hw_serial_dma_rx_isr(&uart2_device);
-
-    /* leave interrupt */
-    rt_interrupt_leave();
-#endif
-}
-
 /*******************************************************************************
 * Function Name  : USART1_IRQHandler
 * Description    : This function handles USART1 global interrupt request.
diff --git a/bsp/stm3210/project_finsh/startup.c b/bsp/stm3210/project_finsh/startup.c
index c0b5b3a25e851823f0d682230e488ad612e81cc3..b7d9f4d4173187e297bb8b3bd6ab2536f6405d75 100644
--- a/bsp/stm3210/project_finsh/startup.c
+++ b/bsp/stm3210/project_finsh/startup.c
@@ -96,8 +96,6 @@ void rtthread_startup(void)
 	/* init scheduler system */
 	rt_system_scheduler_init();
 
-	/* init hardware serial device */
-	rt_hw_usart_init();
 	/* init all device */
 	rt_device_init_all();
 
diff --git a/bsp/stm3210/project_finsh/stm32f10x_it.c b/bsp/stm3210/project_finsh/stm32f10x_it.c
index dbbe524b86b65112d13cf4ae9cab62f8248251f9..4cbd469b0b08a6b75b4aa935502cf99c676ecd8c 100644
--- a/bsp/stm3210/project_finsh/stm32f10x_it.c
+++ b/bsp/stm3210/project_finsh/stm32f10x_it.c
@@ -156,31 +156,6 @@ void DMA1_Channel2_IRQHandler(void)
 #endif
 }
 
-/*******************************************************************************
-* Function Name  : DMA1_Channel6_IRQHandler
-* Description    : This function handles DMA1 Channel 6 interrupt request.
-* Input          : None
-* Output         : None
-* Return         : None
-*******************************************************************************/
-void DMA1_Channel6_IRQHandler(void)
-{
-#ifdef RT_USING_UART2
-    extern struct rt_device uart2_device;
-	extern void rt_hw_serial_dma_rx_isr(struct rt_device *device);
-
-    /* enter interrupt */
-    rt_interrupt_enter();
-
-    /* clear DMA flag */
-    DMA_ClearFlag(DMA1_FLAG_TC6 | DMA1_FLAG_TE6);
-    rt_hw_serial_dma_rx_isr(&uart2_device);
-
-    /* leave interrupt */
-    rt_interrupt_leave();
-#endif
-}
-
 /*******************************************************************************
 * Function Name  : USART1_IRQHandler
 * Description    : This function handles USART1 global interrupt request.
diff --git a/bsp/stm3210/project_full/board.h b/bsp/stm3210/project_full/board.h
index 695b6c8bef46fe797f87c84e454a4735a2aa46ed..0107d126e558c6a48b6612415e8c1bee1ff32cc1 100644
--- a/bsp/stm3210/project_full/board.h
+++ b/bsp/stm3210/project_full/board.h
@@ -1,7 +1,7 @@
 /*
  * File      : board.h
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006, RT-Thread Develop Team
+ * COPYRIGHT (C) 2009, RT-Thread Development Team
  *
  * The license and distribution terms for this file may be
  * found in the file LICENSE in this distribution or at
@@ -50,6 +50,16 @@ void rt_hw_board_led_on(int n);
 void rt_hw_board_led_off(int n);
 void rt_hw_board_init(void);
 
+#if STM32_CONSOLE_USART == 0
+#define CONSOLE_DEVICE "no"
+#elif STM32_CONSOLE_USART == 1
+#define CONSOLE_DEVICE "uart1"
+#elif STM32_CONSOLE_USART == 2
+#define CONSOLE_DEVICE "uart2"
+#elif STM32_CONSOLE_USART == 3
+#define CONSOLE_DEVICE "uart3"
+#endif
+
 void rt_hw_usart_init(void);
 
 /* SD Card init function */
diff --git a/bsp/stm3210/project_full/rtconfig.h b/bsp/stm3210/project_full/rtconfig.h
index 24d3b66e8416c26799a5ded9bb42581070cd1d78..bfe5d6714ef1490ba28167db89b66a0250466fba 100644
--- a/bsp/stm3210/project_full/rtconfig.h
+++ b/bsp/stm3210/project_full/rtconfig.h
@@ -73,8 +73,7 @@
 
 /* SECTION: device filesystem */
 #define RT_USING_DFS
-#define RT_USING_DFS_EFSL
-/* #define RT_USING_DFS_ELMFAT */
+#define RT_USING_DFS_ELMFAT
 
 /* the max number of mounted filesystem */
 #define DFS_FILESYSTEMS_MAX			2
diff --git a/bsp/stm3210/project_full/startup.c b/bsp/stm3210/project_full/startup.c
index 8efccc26a14565ebd96454918eb8c0aba54ccd92..9588e44a45af3670c4592c4154344f7710580709 100644
--- a/bsp/stm3210/project_full/startup.c
+++ b/bsp/stm3210/project_full/startup.c
@@ -97,9 +97,6 @@ void rtthread_startup(void)
 	/* init scheduler system */
 	rt_system_scheduler_init();
 
-	/* init hardware serial device */
-	rt_hw_usart_init();
-
 #ifdef RT_USING_DFS
 	/* init sdcard driver */
 #if STM32_USE_SDIO
diff --git a/bsp/stm3210/project_full/stm32f10x_it.c b/bsp/stm3210/project_full/stm32f10x_it.c
index 5b131ea50ff69606febc852db9c8be3bb2ccb8b1..8411987ae9758a33ef3abe3eab169a08c1a1f67a 100644
--- a/bsp/stm3210/project_full/stm32f10x_it.c
+++ b/bsp/stm3210/project_full/stm32f10x_it.c
@@ -156,31 +156,6 @@ void DMA1_Channel2_IRQHandler(void)
 #endif
 }
 
-/*******************************************************************************
-* Function Name  : DMA1_Channel6_IRQHandler
-* Description    : This function handles DMA1 Channel 6 interrupt request.
-* Input          : None
-* Output         : None
-* Return         : None
-*******************************************************************************/
-void DMA1_Channel6_IRQHandler(void)
-{
-#ifdef RT_USING_UART2
-    extern struct rt_device uart2_device;
-	extern void rt_hw_serial_dma_rx_isr(struct rt_device *device);
-
-    /* enter interrupt */
-    rt_interrupt_enter();
-
-    /* clear DMA flag */
-    DMA_ClearFlag(DMA1_FLAG_TC6 | DMA1_FLAG_TE6);
-    rt_hw_serial_dma_rx_isr(&uart2_device);
-
-    /* leave interrupt */
-    rt_interrupt_leave();
-#endif
-}
-
 /*******************************************************************************
 * Function Name  : USART1_IRQHandler
 * Description    : This function handles USART1 global interrupt request.
diff --git a/bsp/stm3210/project_led_simple/project.Uv2 b/bsp/stm3210/project_led_simple/project.Uv2
index f47292e1473937712b40cc63b0aa025e10e58f0e..b17602999c83d46acad3d3c3dfc174ffd14bca8b 100644
--- a/bsp/stm3210/project_led_simple/project.Uv2
+++ b/bsp/stm3210/project_led_simple/project.Uv2
@@ -2,6 +2,7 @@
 ### Do not modify !
 
 Target (RT-Thread STM32), 0x0004 // Tools: 'ARM-ADS'
+Target (RT-Thread STM32 Simulator), 0x0004 // Tools: 'ARM-ADS'
 
 Group (Startup)
 Group (StdPeriph_Driver)
@@ -16,6 +17,7 @@ File 1,1,<.\startup.c><startup.c>
 File 1,1,<.\led.c><led.c>
 File 1,5,<.\rtconfig.h><rtconfig.h>
 File 1,5,<.\board.h><board.h>
+File 1,1,<.\usart.c><usart.c>
 File 2,1,<.\Libraries\STM32F10x_StdPeriph_Driver\src\misc.c><misc.c>
 File 2,1,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_wwdg.c><stm32f10x_wwdg.c>
 File 2,1,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_adc.c><stm32f10x_adc.c>
@@ -60,6 +62,7 @@ File 5,1,<..\..\libcpu\arm\stm32\stack.c><stack.c>
 File 5,2,<..\..\libcpu\arm\stm32\context_rvds.S><context_rvds.S>
 File 5,2,<..\..\libcpu\arm\stm32\fault_rvds.S><fault_rvds.S>
 File 5,2,<..\..\libcpu\arm\stm32\start_rvds.s><start_rvds.s>
+File 5,1,<..\..\libcpu\arm\stm32\serial.c><serial.c>
 
 
 Options 1,0,0  // Target 'RT-Thread STM32'
@@ -144,11 +147,101 @@ Options 1,0,0  // Target 'RT-Thread STM32'
  ADSLDMC ()
  ADSLDIF ()
  ADSLDDW ()
-  OPTDL (SARMCM3.DLL)()(DARMSTM.DLL)(-pSTM32F107xCSchedule)(SARMCM3.DLL)()(TARMSTM.DLL)(-pSTM32F107xC)
-  OPTDBG 49149,7,()()()()()()()()()() (Segger\JL2CM3.dll)()()()
+  OPTDL (SARMCM3.DLL)()(DARMSTM.DLL)(-pSTM32F103ZE)(SARMCM3.DLL)()(TARMSTM.DLL)(-pSTM32F103ZE)
+  OPTDBG 49150,7,()()()()()()()()()() (Segger\JL2CM3.dll)()()()
  FLASH1 { 9,0,0,0,1,0,0,0,5,16,0,0,0,0,0,0,0,0,0,0 }
  FLASH2 (Segger\JL2CM3.dll)
  FLASH3 ("" ())
  FLASH4 ()
 EndOpt
 
+Options 2,0,0  // Target 'RT-Thread STM32 Simulator'
+ Device (STM32F103ZE)
+ Vendor (STMicroelectronics)
+ Cpu (IRAM(0x20000000-0x2000FFFF) IROM(0x8000000-0x807FFFF) CLOCK(8000000) CPUTYPE("Cortex-M3"))
+ FlashUt ()
+ StupF ("STARTUP\ST\STM32F10x.s" ("STM32 Startup Code"))
+ FlashDR (UL2CM3(-O14 -S0 -C0 -N00("ARM Cortex-M3") -D00(1BA00477) -L00(4) -FO7 -FD20000000 -FC800 -FN1 -FF0STM32F10x_512 -FS08000000 -FL080000))
+ DevID (4216)
+ Rgf (stm32f10x_lib.h)
+ Mem ()
+ C ()
+ A ()
+ RL ()
+ OH ()
+ DBC_IFX ()
+ DBC_CMS ()
+ DBC_AMS ()
+ DBC_LMS ()
+ UseEnv=0
+ EnvBin ()
+ EnvInc ()
+ EnvLib ()
+ EnvReg (˙ST\STM32F10x\)
+ OrgReg (˙ST\STM32F10x\)
+ TgStat=16
+ OutDir (.\obj\)
+ OutName (rtthread-stm32)
+ GenApp=1
+ GenLib=0
+ GenHex=0
+ Debug=1
+ Browse=0
+ LstDir (.\obj\)
+ HexSel=1
+ MG32K=0
+ TGMORE=0
+ RunUsr 0 0 <>
+ RunUsr 1 0 <>
+ BrunUsr 0 0 <>
+ BrunUsr 1 0 <>
+ CrunUsr 0 0 <>
+ CrunUsr 1 0 <>
+ SVCSID <>
+ GLFLAGS=1790
+ ADSFLGA { 243,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ ACPUTYP ("Cortex-M3")
+ RVDEV ()
+ ADSTFLGA { 0,12,0,2,99,0,0,66,0,0,0,0,0,0,0,0,0,0,0,0 }
+ OCMADSOCM { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ OCMADSIRAM { 0,0,0,0,32,0,0,1,0 }
+ OCMADSIROM { 1,0,0,0,8,0,0,8,0 }
+ OCMADSXRAM { 0,0,0,0,0,0,0,0,0 }
+ OCR_RVCT { 1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,0,8,0,0,8,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,1,0,0,0,0,0,0,0,0,0,0 }
+ RV_STAVEC ()
+ ADSCCFLG { 5,32,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ ADSCMISC ()
+ ADSCDEFN (USE_STDPERIPH_DRIVER, STM32F10X_HD, STM32_SIMULATOR)
+ ADSCUDEF ()
+ ADSCINCD (.\Libraries\STM32F10x_StdPeriph_Driver\inc;.\Libraries\CMSIS\Core\CM3;..\..\include;.;..\..\libcpu\arm\stm32)
+ ADSASFLG { 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ ADSAMISC ()
+ ADSADEFN ()
+ ADSAUDEF ()
+ ADSAINCD ()
+ PropFld { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ IncBld=1
+ AlwaysBuild=0
+ GenAsm=0
+ AsmAsm=0
+ PublicsOnly=0
+ StopCode=3
+ CustArgs ()
+ LibMods ()
+ ADSLDFG { 17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
+ ADSLDTA (0x08000000)
+ ADSLDDA (0x20000000)
+ ADSLDSC ()
+ ADSLDIB ()
+ ADSLDIC ()
+ ADSLDMC ()
+ ADSLDIF ()
+ ADSLDDW ()
+  OPTDL (SARMCM3.DLL)()(DARMSTM.DLL)(-pSTM32F103ZE)(SARMCM3.DLL)()(TARMSTM.DLL)(-pSTM32F103ZE)
+  OPTDBG 49149,7,()()()()()()()()()() (Segger\JL2CM3.dll)()()()
+ FLASH1 { 9,0,0,0,1,0,0,0,5,16,0,0,0,0,0,0,0,0,0,0 }
+ FLASH2 (Segger\JLTAgdi.dll)
+ FLASH3 ("" ())
+ FLASH4 ()
+EndOpt
+
diff --git a/bsp/stm3210/project_lwip/startup.c b/bsp/stm3210/project_lwip/startup.c
index 0c452762d731fd022705b6d942c044f03f26288a..46a828f7a99fe571cc6b1ab43040328f0efb2af6 100644
--- a/bsp/stm3210/project_lwip/startup.c
+++ b/bsp/stm3210/project_lwip/startup.c
@@ -96,12 +96,6 @@ void rtthread_startup(void)
 	/* init scheduler system */
 	rt_system_scheduler_init();
 
-	/* init hardware serial device */
-	rt_hw_usart_init();
-
-	/* init all device */
-	rt_device_init_all();
-
 	/* init application */
 	rt_application_init();
 
diff --git a/bsp/stm3210/project_lwip/stm32f10x_it.c b/bsp/stm3210/project_lwip/stm32f10x_it.c
index 5b131ea50ff69606febc852db9c8be3bb2ccb8b1..8411987ae9758a33ef3abe3eab169a08c1a1f67a 100644
--- a/bsp/stm3210/project_lwip/stm32f10x_it.c
+++ b/bsp/stm3210/project_lwip/stm32f10x_it.c
@@ -156,31 +156,6 @@ void DMA1_Channel2_IRQHandler(void)
 #endif
 }
 
-/*******************************************************************************
-* Function Name  : DMA1_Channel6_IRQHandler
-* Description    : This function handles DMA1 Channel 6 interrupt request.
-* Input          : None
-* Output         : None
-* Return         : None
-*******************************************************************************/
-void DMA1_Channel6_IRQHandler(void)
-{
-#ifdef RT_USING_UART2
-    extern struct rt_device uart2_device;
-	extern void rt_hw_serial_dma_rx_isr(struct rt_device *device);
-
-    /* enter interrupt */
-    rt_interrupt_enter();
-
-    /* clear DMA flag */
-    DMA_ClearFlag(DMA1_FLAG_TC6 | DMA1_FLAG_TE6);
-    rt_hw_serial_dma_rx_isr(&uart2_device);
-
-    /* leave interrupt */
-    rt_interrupt_leave();
-#endif
-}
-
 /*******************************************************************************
 * Function Name  : USART1_IRQHandler
 * Description    : This function handles USART1 global interrupt request.