diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvoptx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvoptx
index d70c8912..9e348f36 100644
--- a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvoptx
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvoptx
@@ -835,7 +835,7 @@
 
   <Group>
     <GroupName>kernel</GroupName>
-    <tvExp>0</tvExp>
+    <tvExp>1</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -1074,6 +1074,18 @@
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
       <bDave2>0</bDave2>
+      <PathWithFileName>..\..\..\..\kernel\core\tos_stopwatch.c</PathWithFileName>
+      <FilenameWithoutPath>tos_stopwatch.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
+    <File>
+      <GroupNumber>7</GroupNumber>
+      <FileNumber>61</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
       <PathWithFileName>..\..\..\..\kernel\core\tos_sys.c</PathWithFileName>
       <FilenameWithoutPath>tos_sys.c</FilenameWithoutPath>
       <RteFlg>0</RteFlg>
@@ -1081,7 +1093,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>61</FileNumber>
+      <FileNumber>62</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1093,7 +1105,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>62</FileNumber>
+      <FileNumber>63</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1105,7 +1117,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>63</FileNumber>
+      <FileNumber>64</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1117,7 +1129,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>64</FileNumber>
+      <FileNumber>65</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1137,7 +1149,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>65</FileNumber>
+      <FileNumber>66</FileNumber>
       <FileType>2</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1149,7 +1161,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>66</FileNumber>
+      <FileNumber>67</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1161,7 +1173,7 @@
     </File>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>67</FileNumber>
+      <FileNumber>68</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1181,7 +1193,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>9</GroupNumber>
-      <FileNumber>68</FileNumber>
+      <FileNumber>69</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -1201,7 +1213,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>10</GroupNumber>
-      <FileNumber>69</FileNumber>
+      <FileNumber>70</FileNumber>
       <FileType>5</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
diff --git a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvprojx b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvprojx
index 66835d5d..bf0ccb42 100644
--- a/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvprojx
+++ b/board/TencentOS_tiny_EVB_MX_Plus/KEIL/hello_world/TencentOS_tiny.uvprojx
@@ -10,14 +10,14 @@
       <TargetName>TencentOS_tiny</TargetName>
       <ToolsetNumber>0x4</ToolsetNumber>
       <ToolsetName>ARM-ADS</ToolsetName>
-      <pCCUsed>5060750::V5.06 update 6 (build 750)::ARMCC</pCCUsed>
+      <pCCUsed>5060750::V5.06 update 6 (build 750)::.\ARMCC</pCCUsed>
       <uAC6>0</uAC6>
       <TargetOption>
         <TargetCommonOption>
           <Device>STM32L431RCTx</Device>
           <Vendor>STMicroelectronics</Vendor>
-          <PackID>Keil.STM32L4xx_DFP.2.2.0</PackID>
-          <PackURL>http://www.keil.com/pack</PackURL>
+          <PackID>Keil.STM32L4xx_DFP.2.4.0</PackID>
+          <PackURL>https://www.keil.com/pack/</PackURL>
           <Cpu>IRAM(0x20000000-0x2000FFFF) IROM(0x8000000-0x803FFFF) CLOCK(8000000) FPU2 CPUTYPE("Cortex-M4")</Cpu>
           <FlashUtilSpec></FlashUtilSpec>
           <StartupFile></StartupFile>
@@ -185,6 +185,7 @@
             <uocXRam>0</uocXRam>
             <RvdsVP>2</RvdsVP>
             <RvdsMve>0</RvdsMve>
+            <RvdsCdeCp>0</RvdsCdeCp>
             <hadIRAM2>0</hadIRAM2>
             <hadIROM2>0</hadIROM2>
             <StupSel>8</StupSel>
@@ -351,7 +352,7 @@
             <NoWarn>0</NoWarn>
             <uSurpInc>0</uSurpInc>
             <useXO>0</useXO>
-            <uClangAs>0</uClangAs>
+            <ClangAsOpt>4</ClangAsOpt>
             <VariousControls>
               <MiscControls></MiscControls>
               <Define></Define>
@@ -707,6 +708,11 @@
               <FileType>1</FileType>
               <FilePath>..\..\..\..\kernel\core\tos_sem.c</FilePath>
             </File>
+            <File>
+              <FileName>tos_stopwatch.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\..\..\kernel\core\tos_stopwatch.c</FilePath>
+            </File>
             <File>
               <FileName>tos_sys.c</FileName>
               <FileType>1</FileType>
@@ -794,4 +800,19 @@
     <files/>
   </RTE>
 
+  <LayerInfo>
+    <Layers>
+      <Layer>
+        <LayName>&lt;Project Info&gt;</LayName>
+        <LayDesc></LayDesc>
+        <LayUrl></LayUrl>
+        <LayKeys></LayKeys>
+        <LayCat></LayCat>
+        <LayLic></LayLic>
+        <LayTarg>0</LayTarg>
+        <LayPrjMark>1</LayPrjMark>
+      </Layer>
+    </Layers>
+  </LayerInfo>
+
 </Project>