diff --git a/Software/BSR_TestUART/Program/Modules/module_rs232.c b/Software/BSR_TestUART/Program/Modules/module_rs232.c
index 2efd070..6dddfc6 100644
--- a/Software/BSR_TestUART/Program/Modules/module_rs232.c
+++ b/Software/BSR_TestUART/Program/Modules/module_rs232.c
@@ -1,5 +1,7 @@
 /*====================================================================================================*/
 /*====================================================================================================*/
+#include <stdio.h>
+
 #include "stm32f1_system.h"
 #include "stm32f1_usart.h"
 #include "module_rs232.h"
@@ -57,12 +59,39 @@ void RS232_Config( void )
   USART_InitStruct.USART_HardwareFlowControl = USARTx_HARDWARECTRL;
   USART_InitStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
   USART_Init(USARTx, &USART_InitStruct);
+
   USART_Cmd(USARTx, ENABLE);
 
   USART_ClearFlag(USARTx, USART_FLAG_TC);
 }
 /*====================================================================================================*/
 /*====================================================================================================*
+**函數 : RS232_SendByte
+**功能 : Send Byte
+**輸入 : *pWord
+**輸出 : None
+**使用 : RS232_SendByte('A');
+**====================================================================================================*/
+/*====================================================================================================*/
+void RS232_SendByte( int8_t SendByte )
+{
+  UART_SendByte(USARTx, &SendByte);
+}
+/*====================================================================================================*/
+/*====================================================================================================*
+**函數 : RS232_SendData
+**功能 : 發送資料
+**輸入 : *SendData, DataLen
+**輸出 : None
+**使用 : RS232_SendData(SendData, DataLen);
+**====================================================================================================*/
+/*====================================================================================================*/
+void RS232_SendData( int8_t *SendData, uint16_t DataLen )
+{
+  UART_SendData(USARTx, SendData, DataLen);
+}
+/*====================================================================================================*/
+/*====================================================================================================*
 **函數 : RS232_SendStr
 **功能 : 發送字串
 **輸入 : *pWord
@@ -100,16 +129,44 @@ void RS232_SendNum( StrType Type, uint8_t NumLen, int32_t SendData )
 }
 /*====================================================================================================*/
 /*====================================================================================================*
-**函數 : RS232_SendData
-**功能 : 發送資料
-**輸入 : *SendData, DataLen
+**函數 : RS232_RecvByte
+**功能 : Recv Byte
+**輸入 : None
+**輸出 : RecvByte
+**使用 : RecvByte = RS232_RecvByte();
+**====================================================================================================*/
+/*====================================================================================================*/
+int8_t RS232_RecvByte( void )
+{
+  int8_t RecvByte = 0;
+  UART_RecvByte(USARTx, &RecvByte);
+  return RecvByte;
+}
+/*====================================================================================================*/
+/*====================================================================================================*
+**函數 : RS232_RecvData
+**功能 : 接收資料
+**輸入 : *RecvData, DataLen
 **輸出 : None
-**使用 : RS232_SendData(SendData, DataLen);
+**使用 : RS232_RecvData(RecvData, DataLen);
 **====================================================================================================*/
 /*====================================================================================================*/
-void RS232_SendData( int8_t *SendData, uint16_t DataLen )
+void RS232_RecvData( int8_t *RecvData, uint16_t DataLen )
 {
-  UART_SendData(USARTx, SendData, DataLen);
+  UART_RecvData(USARTx, RecvData, DataLen);
+}
+/*====================================================================================================*/
+/*====================================================================================================*
+**函數 : RS232_RecvDataWTO
+**功能 : 接收資料, 並加入 Timeout 功能
+**輸入 : *RecvData, DataLen, TimeoutMs
+**輸出 : State
+**使用 : RS232_RecvDataWTO(RecvData, DataLen, 200);
+**====================================================================================================*/
+/*====================================================================================================*/
+int8_t RS232_RecvDataWTO( int8_t *RecvData, uint16_t DataLen, int32_t TimeoutMs )
+{
+  return UART_RecvDataWTO(USARTx, RecvData, DataLen, TimeoutMs);
 }
 /*====================================================================================================*/
 /*====================================================================================================*
@@ -150,30 +207,12 @@ int8_t RS232_RecvStrWTO( int8_t *pWord, int32_t TimeoutMs )
   return SUCCESS;
 }
 /*====================================================================================================*/
-/*====================================================================================================*
-**函數 : RS232_RecvData
-**功能 : 接收資料
-**輸入 : *RecvData, DataLen
-**輸出 : None
-**使用 : RS232_RecvData(RecvData, DataLen);
-**====================================================================================================*/
-/*====================================================================================================*/
-void RS232_RecvData( int8_t *RecvData, uint16_t DataLen )
-{
-  UART_RecvData(USARTx, RecvData, DataLen);
-}
-/*====================================================================================================*/
-/*====================================================================================================*
-**函數 : RS232_RecvDataWTO
-**功能 : 接收資料, 並加入 Timeout 功能
-**輸入 : *RecvData, DataLen, TimeoutMs
-**輸出 : State
-**使用 : RS232_RecvDataWTO(RecvData, DataLen, 200);
-**====================================================================================================*/
 /*====================================================================================================*/
-int8_t RS232_RecvDataWTO( int8_t *RecvData, uint16_t DataLen, int32_t TimeoutMs )
+int fputc( int ch, FILE *f )
 {
-  return UART_RecvDataWTO(USARTx, RecvData, DataLen, TimeoutMs);
+  USARTx->DR = ((uint8_t)ch & (uint16_t)0x00FF);
+  while(!(USART1->SR & USART_FLAG_TXE));
+  return (ch);
 }
 /*====================================================================================================*/
 /*====================================================================================================*/
diff --git a/Software/BSR_TestUART/Program/Modules/module_rs232.h b/Software/BSR_TestUART/Program/Modules/module_rs232.h
index 6ceea3f..f2b5c01 100644
--- a/Software/BSR_TestUART/Program/Modules/module_rs232.h
+++ b/Software/BSR_TestUART/Program/Modules/module_rs232.h
@@ -8,13 +8,15 @@
 /*====================================================================================================*/
 /*====================================================================================================*/
 void   RS232_Config( void );
+void   RS232_SendByte( int8_t SendByte );
+void   RS232_SendData( int8_t *SendData, uint16_t DataLen );
 void   RS232_SendStr( int8_t *pWord );
 void   RS232_SendNum( StrType Type, uint8_t NumLen, int32_t SendData );
-void   RS232_SendData( int8_t *SendData, uint16_t DataLen );
-void   RS232_RecvStr( int8_t *pWord );
-int8_t RS232_RecvStrWTO( int8_t *pWord, int32_t TimeoutMs );
+int8_t RS232_RecvByte( void );
 void   RS232_RecvData( int8_t *RecvData, uint16_t DataLen );
 int8_t RS232_RecvDataWTO( int8_t *RecvData, uint16_t DataLen, int32_t TimeoutMs );
+void   RS232_RecvStr( int8_t *pWord );
+int8_t RS232_RecvStrWTO( int8_t *pWord, int32_t TimeoutMs );
 /*====================================================================================================*/
 /*====================================================================================================*/
 #endif
diff --git a/Software/BSR_TestUART/Program/experiment_stm32f1.c b/Software/BSR_TestUART/Program/experiment_stm32f1.c
index 913a6ef..d5ab201 100644
--- a/Software/BSR_TestUART/Program/experiment_stm32f1.c
+++ b/Software/BSR_TestUART/Program/experiment_stm32f1.c
@@ -1,34 +1,36 @@
 /*====================================================================================================*/
 /*====================================================================================================*/
+#include <stdio.h>
+
 #include "stm32f1_system.h"
 #include "experiment_stm32f1.h"
 #include "module_rs232.h"
 /*====================================================================================================*/
 /*====================================================================================================*/
-#define RECV_DATA_SIZE    1
-#define RECV_DATA_TIMEOUT 500
-
 int main( void )
 {
-  int8_t State = ERROR;
-  int8_t RecvData = 0;
+  static uint8_t i = 0;
+  static uint8_t RecvData = 0;
+  static int8_t State = ERROR;
 
   GPIO_Config();
   RS232_Config();
 
   LED_R = 0;
 
-  RS232_SendStr((int8_t*)"\r\nHello World!\r\n\r\n");
+  printf("\r\nHello World!\r\n\r\n");
 
   while(1) {
     LED_G = !LED_G;
-    State = RS232_RecvDataWTO(&RecvData, RECV_DATA_SIZE, RECV_DATA_TIMEOUT);
-    if(State == ERROR)
-      RS232_SendStr((int8_t*)"Timeout ... \r\n");
+    State = RS232_RecvDataWTO((int8_t*)&RecvData, 1, 200);
+    if(State == ERROR) {
+      printf("Timeout ... %d\r\n", i);
+      i = (i == 255) ? 0 : i + 1;
+    }
     else if(RecvData == 0x0D)  // if press enter
       RS232_SendStr((int8_t*)"\r\n");
     else
-      RS232_SendData(&RecvData, RECV_DATA_SIZE);
+      RS232_SendData((int8_t*)&RecvData, 1);
   }
 }
 /*====================================================================================================*/
diff --git a/Software/BSR_TestUART/Program/experiment_stm32f1_it.c b/Software/BSR_TestUART/Program/experiment_stm32f1_it.c
new file mode 100644
index 0000000..f6066c4
--- /dev/null
+++ b/Software/BSR_TestUART/Program/experiment_stm32f1_it.c
@@ -0,0 +1,62 @@
+/*====================================================================================================*/
+/*====================================================================================================*/
+#include "stm32f1_system.h"
+#include "module_rs232.h"
+/*====================================================================================================*/
+/*====================================================================================================*/
+void NMI_Handler( void ) { while(1); }
+void HardFault_Handler( void ) { while(1); }
+void MemManage_Handler( void ) { while(1); }
+void BusFault_Handler( void ) { while(1); }
+void UsageFault_Handler( void ) { while(1); }
+void SVC_Handler( void ) { while(1); }
+void DebugMon_Handler( void ) { while(1); }
+void PendSV_Handler( void ) { while(1); }
+/*====================================================================================================*/
+/*====================================================================================================*/
+//void SysTick_Handler( void );
+//void WWDG_IRQHandler( void );
+//void PVD_IRQHandler( void );
+//void TAMPER_IRQHandler( void );
+//void RTC_IRQHandler( void );
+//void FLASH_IRQHandler( void );
+//void RCC_IRQHandler( void );
+//void EXTI0_IRQHandler( void );
+//void EXTI1_IRQHandler( void );
+//void EXTI2_IRQHandler( void );
+//void EXTI3_IRQHandler( void );
+//void EXTI4_IRQHandler( void );
+//void DMA1_Channel1_IRQHandler( void );
+//void DMA1_Channel2_IRQHandler( void );
+//void DMA1_Channel3_IRQHandler( void );
+//void DMA1_Channel4_IRQHandler( void );
+//void DMA1_Channel5_IRQHandler( void );
+//void DMA1_Channel6_IRQHandler( void );
+//void DMA1_Channel7_IRQHandler( void );
+//void ADC1_2_IRQHandler( void );
+//void USB_HP_CAN1_TX_IRQHandler( void );
+//void USB_LP_CAN1_RX0_IRQHandler( void );
+//void CAN1_RX1_IRQHandler( void );
+//void CAN1_SCE_IRQHandler( void );
+//void EXTI9_5_IRQHandler( void );
+//void TIM1_BRK_IRQHandler( void );
+//void TIM1_UP_IRQHandler( void );
+//void TIM1_TRG_COM_IRQHandler( void );
+//void TIM1_CC_IRQHandler( void );
+//void TIM2_IRQHandler( void );
+//void TIM3_IRQHandler( void );
+//void TIM4_IRQHandler( void );
+//void I2C1_EV_IRQHandler( void );
+//void I2C1_ER_IRQHandler( void );
+//void I2C2_EV_IRQHandler( void );
+//void I2C2_ER_IRQHandler( void );
+//void SPI1_IRQHandler( void );
+//void SPI2_IRQHandler( void );
+//void USART1_IRQHandler( void );
+//void USART2_IRQHandler( void );
+//void USART3_IRQHandler( void );
+//void EXTI15_10_IRQHandler( void );
+//void RTCAlarm_IRQHandler( void );
+//void USBWakeUp_IRQHandler( void );
+/*====================================================================================================*/
+/*====================================================================================================*/
diff --git a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvguix.Hom b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvguix.Hom
index 0091ba7..cfef589 100644
--- a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvguix.Hom
+++ b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvguix.Hom
@@ -75,25 +75,25 @@
       <flags>2</flags>
       <showCmd>3</showCmd>
       <MinPosition>
-        <xPos>-32000</xPos>
-        <yPos>-32000</yPos>
+        <xPos>-1</xPos>
+        <yPos>-1</yPos>
       </MinPosition>
       <MaxPosition>
         <xPos>-1</xPos>
         <yPos>-1</yPos>
       </MaxPosition>
       <NormalPosition>
-        <Top>237</Top>
-        <Left>777</Left>
-        <Right>1852</Right>
-        <Bottom>953</Bottom>
+        <Top>197</Top>
+        <Left>689</Left>
+        <Right>1649</Right>
+        <Bottom>841</Bottom>
       </NormalPosition>
     </WindowPosition>
     <MDIClientArea>
       <RegID>0</RegID>
       <MDITabState>
-        <Len>259</Len>
-        <Data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ata>
+        <Len>60</Len>
+        <Data>010000000400000001000000010000000100000001000000000000000200000000000000010000000100000000000000280000002800000000000000</Data>
       </MDITabState>
     </MDIClientArea>
     <ViewEx>
@@ -116,7 +116,7 @@
         </RectRecentDocked>
         <RectRecentFloat>
           <Len>16</Len>
-          <Data>B20300003E010000AE070000CE010000</Data>
+          <Data>940100006500000090050000F5000000</Data>
         </RectRecentFloat>
       </Window>
       <Window>
@@ -1281,14 +1281,14 @@
       </Window>
       <DockMan>
         <Len>2639</Len>
-        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+        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       </DockMan>
       <ToolBar>
         <RegID>59392</RegID>
         <Name>File</Name>
         <Buttons>
-          <Len>2288</Len>
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         </Buttons>
         <OriginalItems>
           <Len>1423</Len>
@@ -1339,22 +1339,4 @@
     </ViewEx>
   </WinLayoutEx>
 
-  <MDIGroups>
-    <Orientation>1</Orientation>
-    <ActiveMDIGroup>0</ActiveMDIGroup>
-    <MDIGroup>
-      <Size>100</Size>
-      <ActiveTab>0</ActiveTab>
-      <Doc>
-        <Name>C:\Users\Hom\Desktop\BeanSproutR_TestUART_20140214\Readme.md</Name>
-        <ColumnNumber>16</ColumnNumber>
-        <TopLine>1</TopLine>
-        <CurrentLine>18</CurrentLine>
-        <Folding>1</Folding>
-        <ContractedFolders></ContractedFolders>
-        <PaneID>0</PaneID>
-      </Doc>
-    </MDIGroup>
-  </MDIGroups>
-
 </ProjectGui>
diff --git a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvoptx b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvoptx
index 610efb1..02de78b 100644
--- a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvoptx
+++ b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvoptx
@@ -82,42 +82,47 @@
         <Book>
           <Number>0</Number>
           <Title>Base Board Schematics (MCBSTM32E)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.0.5\Documents\mcbstm32e-base-board-schematics.pdf</Path>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.1.0\Documents\mcbstm32e-base-board-schematics.pdf</Path>
         </Book>
         <Book>
           <Number>1</Number>
           <Title>Display Board Schematics (MCBSTM32E)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.0.5\Documents\mcbstm32e-display-board-schematics.pdf</Path>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.1.0\Documents\mcbstm32e-display-board-schematics.pdf</Path>
         </Book>
         <Book>
           <Number>2</Number>
           <Title>User Manual (MCBSTM32E)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.0.5\Documents\mcbstm32e.chm</Path>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32F1xx_DFP\1.1.0\Documents\mcbstm32e.chm</Path>
         </Book>
         <Book>
           <Number>3</Number>
           <Title>User Manual (NUCLEO-F103RB)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.2.0\Documents\DM00105823.pdf</Path>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.3.0\Documents\DM00105823.pdf</Path>
         </Book>
         <Book>
           <Number>4</Number>
-          <Title>Getting started (NUCLEO-F103RB)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.2.0\Documents\DM00105925.pdf</Path>
+          <Title>Overview (NUCLEO-F103RB)</Title>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.3.0\Documents\DM00105918.pdf</Path>
         </Book>
         <Book>
           <Number>5</Number>
-          <Title>Schematics (NUCLEO-F103RB)</Title>
-          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.2.0\Documents\MB1136.pdf</Path>
+          <Title>Getting started (NUCLEO-F103RB)</Title>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.3.0\Documents\DM00105925.pdf</Path>
         </Book>
         <Book>
           <Number>6</Number>
+          <Title>Schematics (NUCLEO-F103RB)</Title>
+          <Path>C:\Keil_v5\ARM\PACK\Keil\STM32NUCLEO_BSP\1.3.0\Documents\MB1136.pdf</Path>
+        </Book>
+        <Book>
+          <Number>7</Number>
           <Title>MCBSTM32E Evaluation Board Web Page (MCBSTM32E)</Title>
           <Path>http://www.keil.com/mcbstm32e/</Path>
         </Book>
         <Book>
-          <Number>7</Number>
-          <Title>Nucleo STM32 F1 series development board (NUCLEO-F103RB)</Title>
-          <Path>http://www.st.com/web/en/catalog/tools/PF259875</Path>
+          <Number>8</Number>
+          <Title>STM32 Nucleo board (NUCLEO-F103RB)</Title>
+          <Path>http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1847/PF259875</Path>
         </Book>
       </Books>
       <DebugOpt>
@@ -255,6 +260,19 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>2</GroupNumber>
+      <FileNumber>4</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <Focus>0</Focus>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>..\Program\experiment_stm32f1_it.c</PathWithFileName>
+      <FilenameWithoutPath>experiment_stm32f1_it.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
   <Group>
@@ -265,7 +283,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>3</GroupNumber>
-      <FileNumber>4</FileNumber>
+      <FileNumber>5</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
@@ -286,7 +304,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>4</GroupNumber>
-      <FileNumber>5</FileNumber>
+      <FileNumber>6</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
diff --git a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvprojx b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvprojx
index f115778..7d39779 100644
--- a/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvprojx
+++ b/Software/BSR_TestUART/ProjectBSR/ProjectSTM32.uvprojx
@@ -14,7 +14,7 @@
         <TargetCommonOption>
           <Device>STM32F103CB</Device>
           <Vendor>STMicroelectronics</Vendor>
-          <PackID>Keil.STM32F1xx_DFP.1.0.5</PackID>
+          <PackID>Keil.STM32F1xx_DFP.1.1.0</PackID>
           <PackURL>http://www.keil.com/pack/</PackURL>
           <Cpu>IROM(0x08000000,0x20000) IRAM(0x20000000,0x5000) CPUTYPE("Cortex-M3") CLOCK(72000000) ELITTLE</Cpu>
           <FlashUtilSpec></FlashUtilSpec>
@@ -428,6 +428,11 @@
               <FileType>1</FileType>
               <FilePath>..\Program\experiment_stm32f1.c</FilePath>
             </File>
+            <File>
+              <FileName>experiment_stm32f1_it.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\Program\experiment_stm32f1_it.c</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>