diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/inc/mass_mal.h b/bsp/stm32_radio/Libraries/Mass_Storage/inc/mass_mal.h
index 142969e6f..0de1d6310 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/inc/mass_mal.h
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/inc/mass_mal.h
@@ -22,7 +22,6 @@
 /* Exported constants --------------------------------------------------------*/
 #define MAL_OK   0
 #define MAL_FAIL 1
-#define MAX_LUN  1
 
 /* Exported macro ------------------------------------------------------------*/
 /* Exported functions ------------------------------------------------------- */
diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/src/mass_mal.c b/bsp/stm32_radio/Libraries/Mass_Storage/src/mass_mal.c
index f63527334..9234a0edb 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/src/mass_mal.c
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/src/mass_mal.c
@@ -15,13 +15,13 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "platform_config.h"
-#include "sdcard.h"
 #include "mass_mal.h"
 #include "rtthread.h"
 
-uint32_t Mass_Memory_Size[2];
-uint32_t Mass_Block_Size[2];
-uint32_t Mass_Block_Count[2];
+uint32_t Mass_Memory_Size[3];
+uint32_t Mass_Block_Size[3];
+uint32_t Mass_Block_Count[3];
+uint32_t Max_Lun = 0;
 
 rt_device_t dev_sdio = RT_NULL;
 
diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/src/scsi_data.c b/bsp/stm32_radio/Libraries/Mass_Storage/src/scsi_data.c
index 2862ceac3..d5dffec6b 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/src/scsi_data.c
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/src/scsi_data.c
@@ -17,66 +17,65 @@
 #include "usb_scsi.h"
 #include "memory.h"
 uint8_t Page00_Inquiry_Data[] =
-  {
+{
     0x00, /* PERIPHERAL QUALIFIER & PERIPHERAL DEVICE TYPE*/
     0x00,
     0x00,
     0x00,
     0x00 /* Supported Pages 00*/
-  };
+};
 uint8_t Standard_Inquiry_Data[] =
-  {
+{
     0x00,          /* Direct Access Device */
     0x80,          /* RMB = 1: Removable Medium */
     0x02,          /* Version: No conformance claim to standard */
     0x02,
 
-    36 - 4,          /* Additional Length */
+    36 - 4,        /* Additional Length */
     0x00,          /* SCCS = 1: Storage Controller Component */
     0x00,
     0x00,
     /* Vendor Identification */
-    'S', 'T', 'M', ' ', 'C', 'M', '-', '3',
+    'S', 'T', 'M', '3', '2', ' ', ' ', ' ',
     /* Product Identification */
-    'S', 'D', ' ', 'F', 'l', 'a', 's', 'h', ' ',
-    'D', 'i', 's', 'k', ' ', ' ', ' ',
+    'n', 'e', 't', 'r', 'a', 'd', 'i', 'o', ' ',
+    'D', 'I', 'S', 'K', '1', ' ', ' ',
     /* Product Revision Level */
     '1', '.', '0', ' '
-  };
+};
 uint8_t Standard_Inquiry_Data2[] =
-  {
-    0x00,          /* Direct Access Device *///磁盘设备
-    //其中最高位D7为RMB。RMB=0，表示不可移除设备。如果RMB=1，则为可移除设备。
+{
+    0x00,          /* Direct Access Device */
     0x80,          /* RMB = 1: Removable Medium */
 
     0x02,          /* Version: No conformance claim to standard */
-    0x02,          //数据响应格式
+    0x02,          /* 数据响应格式 */
 
-    36 - 4,          //附加数据长度，为31字节
+    36 - 4,        /* 附加数据长度，为31字节 */
     0x00,          /* SCCS = 1: Storage Controller Component */
     0x00,
     0x00,
     /* Vendor Identification */
-    'S', 'T', 'M', ' ', ' ', ' ', ' ', ' ',
+    'S', 'T', 'M', '3', '2', ' ', ' ', ' ',
     /* Product Identification */
-    'N', 'A', 'N', 'D', ' ', 'F', 'l', 'a', 's', 'h', ' ',
-    'D', 'i', 's', 'k', ' ',
+    'n', 'e', 't', 'r', 'a', 'd', 'i', 'o', ' ',
+    'D', 'I', 'S', 'K', '2', ' ', ' ',
     /* Product Revision Level */
     '1', '.', '0', ' '
-  };
+};
 /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
 uint8_t Mode_Sense6_data[] =
-  {
+{
     0x03,
     0x00,
     0x00,
     0x00,
-  };
+};
 
 /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/
 
 uint8_t Mode_Sense10_data[] =
-  {
+{
     0x00,
     0x06,
     0x00,
@@ -85,9 +84,9 @@ uint8_t Mode_Sense10_data[] =
     0x00,
     0x00,
     0x00
-  };
+};
 uint8_t Scsi_Sense_Data[] =
-  {
+{
     0x70, /*RespCode*/
     0x00, /*SegmentNumber*/
     NO_SENSE, /* Sens_Key*/
@@ -106,9 +105,9 @@ uint8_t Scsi_Sense_Data[] =
     0x00, /*TBD*/
     0x00,
     0x00 /*SenseKeySpecific*/
-  };
+};
 uint8_t ReadCapacity10_Data[] =
-  {
+{
     /* Last Logical Block */
     0,
     0,
@@ -120,10 +119,10 @@ uint8_t ReadCapacity10_Data[] =
     0,
     0,
     0
-  };
+};
 
 uint8_t ReadFormatCapacity_Data [] =
-  {
+{
     0x00,
     0x00,
     0x00,
@@ -140,6 +139,6 @@ uint8_t ReadFormatCapacity_Data [] =
     0,
     0,
     0
-  };
+};
 
 /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_bot.c b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_bot.c
index 8071f7662..49ace5636 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_bot.c
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_bot.c
@@ -21,6 +21,7 @@
 #include "usb_conf.h"
 #include "usb_bot.h"
 #include "memory.h"
+
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/
 /* Private macro -------------------------------------------------------------*/
@@ -81,26 +82,21 @@ void Mass_Storage_In (void)
 void Mass_Storage_Out (void)
 {
     uint8_t CMD;
-    CMD = CBW.CB[0];//寰楀埌涓婁竴娆＄殑?
-    //寰楀埌绔偣2鎺ユ敹鍒扮殑鏁版嵁闀垮害
+    CMD = CBW.CB[0];
     Data_Len = GetEPRxCount(ENDP2);
 
-    //print(" MS_Out:");//print_dec(Data_Len);
 
-    //璇诲嚭鏁版嵁鍒� Bulk_Data_Buff
+    /* read data to Bulk_Data_Buff */
     PMAToUserBufferCopy(Bulk_Data_Buff, ENDP2_RXADDR, Data_Len);
 
     switch (Bot_State)
     {
-    case BOT_IDLE://绌洪棽鐘舵��  杩涘叆CBW瑙ｇ爜
-        //print("BOT_IDLE");
+    case BOT_IDLE:
         CBW_Decode();
         break;
-    case BOT_DATA_OUT://鏁版嵁杈撳嚭鐘舵��
-        //print("BOT_DATA_OUT");
+    case BOT_DATA_OUT:
         if (CMD == SCSI_WRITE10)
         {
-            //print(" CMD == SCSI_WRITE10");
             SCSI_Write10_Cmd(CBW.bLUN , SCSI_LBA , SCSI_BlkLen);
             break;
         }
@@ -128,18 +124,17 @@ void CBW_Decode(void)
 {
     uint32_t Counter;
 
-    //浠嶣ulk_Data_Buff澶嶅埗鏁版嵁鍒癈BW
+    /* read data from Bulk_Data_Buff to CBW */
     for (Counter = 0; Counter < Data_Len; Counter++)
     {
         *((uint8_t *)&CBW + Counter) = Bulk_Data_Buff[Counter];
     }
-    //澶嶅埗TAG鐢ㄤ簬杩斿洖
+    /* copy return TAG */
     CSW.dTag = CBW.dTag;
     CSW.dDataResidue = CBW.dDataLength;
-    //濡傛灉鏁版嵁闀垮害涓嶇瓑浜嶤BW鐨勯暱搴�
+
     if (Data_Len != BOT_CBW_PACKET_LENGTH)
     {
-        //print(" Data_Len != BOT_CBW_PACKET_LENGTH");
         Bot_Abort(BOTH_DIR);
         /* reset the CBW.dSignature to desible the clear feature until receiving a Mass storage reset*/
         CBW.dSignature = 0;
@@ -148,22 +143,18 @@ void CBW_Decode(void)
         return;
     }
 
-    //璇诲啓鏁版嵁
     if ((CBW.CB[0] == SCSI_READ10 ) || (CBW.CB[0] == SCSI_WRITE10 ))
     {
         /* Calculate Logical Block Address */
-        //璁＄畻閫昏緫鍧楀湴鍧� 姣忎釜鎵囧尯512瀛楄妭
         SCSI_LBA = (CBW.CB[2] << 24) | (CBW.CB[3] << 16) | (CBW.CB[4] <<  8) | CBW.CB[5];
         /* Calculate the Number of Blocks to transfer */
-        //璁＄畻浼犻�佺殑鍧楀ぇ灏� 浠ユ墖鍖轰负鍗曚綅?
         SCSI_BlkLen = (CBW.CB[7] <<  8) | CBW.CB[8];
     }
 
-    //USBC
+    /* USBC */
     if (CBW.dSignature == BOT_CBW_SIGNATURE)
     {
         /* Valid CBW */
-        //鏈夋晥浣嗗弬鏁伴敊璇�
         if ((CBW.bLUN > Max_Lun) || (CBW.bCBLength < 1) || (CBW.bCBLength > 16))
         {
             Bot_Abort(BOTH_DIR);
@@ -202,11 +193,9 @@ void CBW_Decode(void)
                 SCSI_TestUnitReady_Cmd(CBW.bLUN);
                 break;
             case SCSI_READ10:
-            //璇绘暟鎹�
                 SCSI_Read10_Cmd(CBW.bLUN, SCSI_LBA , SCSI_BlkLen);
                 break;
             case SCSI_WRITE10:
-                //鍐欐暟鎹�
                 SCSI_Write10_Cmd(CBW.bLUN, SCSI_LBA , SCSI_BlkLen);
                 break;
             case SCSI_VERIFY10:
@@ -266,7 +255,6 @@ void CBW_Decode(void)
     }
     else
     {
-        //鏃犳晥鐨凜BW
         /* Invalid CBW */
         Bot_Abort(BOTH_DIR);
         Set_Scsi_Sense_Data(CBW.bLUN, ILLEGAL_REQUEST, INVALID_COMMAND);
diff --git a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_prop.c b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_prop.c
index 204c0c358..b36658b17 100644
--- a/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_prop.c
+++ b/bsp/stm32_radio/Libraries/Mass_Storage/src/usb_prop.c
@@ -23,15 +23,7 @@
 #include "mass_mal.h"
 #include "usb_prop.h"
 
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-#ifdef USE_STM3210B_EVAL
-uint32_t Max_Lun = 0;
-#else  //USE_STM3210E_EVAL
-uint32_t Max_Lun = 1;
-#endif
+extern uint32_t Max_Lun;
 
 DEVICE Device_Table =
 {
@@ -258,13 +250,11 @@ RESULT MASS_Data_Setup(uint8_t RequestNo)
 {
     uint8_t    *(*CopyRoutine)(uint16_t);
 
-    //print("MASS_Data_Setup");
     CopyRoutine = NULL;
     if ((Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT))
             && (RequestNo == GET_MAX_LUN) && (pInformation->USBwValue == 0)
             && (pInformation->USBwIndex == 0) && (pInformation->USBwLength == 0x01))
     {
-        //print(" Get_Max_Lun\r\n");
         CopyRoutine = Get_Max_Lun;
     }
     else