diff --git a/app/MDK-ARM/app.uvguix.29643 b/app/MDK-ARM/app.uvguix.29643
index 76f6bae..60e3898 100644
--- a/app/MDK-ARM/app.uvguix.29643
+++ b/app/MDK-ARM/app.uvguix.29643
@@ -93,8 +93,8 @@
       <flags>0</flags>
       <showCmd>1</showCmd>
       <MinPosition>
-        <xPos>-1</xPos>
-        <yPos>-1</yPos>
+        <xPos>-32000</xPos>
+        <yPos>-32000</yPos>
       </MinPosition>
       <MaxPosition>
         <xPos>-1</xPos>
@@ -1883,9 +1883,9 @@
       </Doc>
       <Doc>
         <Name>..\..\usersrc\usermain.c</Name>
-        <ColumnNumber>1</ColumnNumber>
+        <ColumnNumber>3</ColumnNumber>
         <TopLine>57</TopLine>
-        <CurrentLine>81</CurrentLine>
+        <CurrentLine>73</CurrentLine>
         <Folding>1</Folding>
         <ContractedFolders></ContractedFolders>
         <PaneID>0</PaneID>
diff --git a/app/MDK-ARM/app.uvoptx b/app/MDK-ARM/app.uvoptx
index ce2e9a2..df7ac01 100644
--- a/app/MDK-ARM/app.uvoptx
+++ b/app/MDK-ARM/app.uvoptx
@@ -120,7 +120,7 @@
         <SetRegEntry>
           <Number>0</Number>
           <Key>CMSIS_AGDI</Key>
-          <Name>-X"Any" -UAny -O462 -S8 -C0 -P00000000 -N00("") -D00(00000000) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO15 -FD20000000 -FC8000 -FN1 -FF0STM32L4xx_128.FLM -FS08000000 -FL020000 -FP0($$Device:STM32L432KBUx$CMSIS\Flash\STM32L4xx_128.FLM)</Name>
+          <Name>-X"Any" -UAny -O2510 -S8 -C0 -P00000000 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO15 -FD20000000 -FC8000 -FN1 -FF0STM32L4xx_128.FLM -FS08000000 -FL020000 -FP0($$Device:STM32L432KBUx$CMSIS\Flash\STM32L4xx_128.FLM)</Name>
         </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
diff --git a/usersrc/usermain.c b/usersrc/usermain.c
index a2da02f..2a08886 100644
--- a/usersrc/usermain.c
+++ b/usersrc/usermain.c
@@ -36,33 +36,36 @@ uint8_t SPI_ReadWriteByte(uint8_t txData)
   uint8_t i;
   uint8_t rxData = 0;
 
-  for (i = 0; i < 8; i++)
-  {
-    SPI_SCK_0();
-    sys_delay_us(1);
-    // 数据发送
-    if (txData & 0x80)
-    {
-      SPI_MOSI_1();
-    }
-    else
-    {
-      SPI_MOSI_0();
-    }
-    txData <<= 1;
-    sys_delay_us(1);
+  SPI_CS_0();
 
-    SPI_SCK_1();
-    sys_delay_us(1);
-    // 数据接收
-    rxData <<= 1;
-    if (SPI_READ_MISO())
-    {
-      rxData |= 0x01;
-    }
-    sys_delay_us(1);
-  }
-  SPI_SCK_0();
+  // for (i = 0; i < 8; i++)
+  // {
+  //   SPI_SCK_0();
+  //   sys_delay_us(1);
+  //   // 数据发送
+  //   if (txData & 0x80)
+  //   {
+  //     SPI_MOSI_1();
+  //   }
+  //   else
+  //   {
+  //     SPI_MOSI_0();
+  //   }
+  //   txData <<= 1;
+  //   sys_delay_us(1);
+
+  //   SPI_SCK_1();
+  //   sys_delay_us(1);
+  //   // 数据接收
+  //   rxData <<= 1;
+  //   if (SPI_READ_MISO())
+  //   {
+  //     rxData |= 0x01;
+  //   }
+  //   sys_delay_us(1);
+  // }
+  // SPI_SCK_0();
+  SPI_CS_1();
 
   return rxData;
 }