diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..16f4d8d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+
+/OBJ
+*.dbgconf
+*.Qi
diff --git a/PORTING/CNN/debug.c b/PORTING/CNN/debug.c
index d3c1b99..4b73186 100644
--- a/PORTING/CNN/debug.c
+++ b/PORTING/CNN/debug.c
@@ -1,5 +1,6 @@
 #include "debug.h"
 #include "led.h"
+#include "exfuns.h"
 
 
 u8 _DEBUG = 1;
@@ -33,6 +34,26 @@ void SDRAM_USED(){
 }
 
 
+void scan_files(u8 * path)
+{
+	FRESULT res;	 
+	res = f_opendir(&dir,(const TCHAR*)path); //打开一个目录
+	if (res == FR_OK) 
+	{	
+		printf("\r\n"); 
+		while(1)
+		{
+			res = f_readdir(&dir, &fileinfo);                   //读取目录下的一个文件
+			if (res != FR_OK || fileinfo.fname[0] == 0) break;  //错误了/到末尾了,退出
+			//if (fileinfo.fname[0] == '.') continue;             //忽略上级目录
+			printf("%s/", path);//打印路径	
+			printf("%s\r\n",fileinfo.fname);//打印文件名	  
+		} 
+	}
+}
+
+
+
 TIM_HandleTypeDef TIM3_Handler;      //定时器句柄 
 
 //通用定时器3中断初始化
diff --git a/PORTING/CNN/debug.h b/PORTING/CNN/debug.h
index 3157f3e..44f0ba8 100644
--- a/PORTING/CNN/debug.h
+++ b/PORTING/CNN/debug.h
@@ -10,6 +10,7 @@
 void DEBUG(void);
 void DEBUG_PRINTF(const char *fmt, ...);
 void SDRAM_USED(void);
+void scan_files(u8 * path);
 void TIM3_Init(u16 arr,u16 psc);
 
 #endif
diff --git a/PORTING/USMART/usmart_config.c b/PORTING/USMART/usmart_config.c
index 6ade908..aa10e08 100644
--- a/PORTING/USMART/usmart_config.c
+++ b/PORTING/USMART/usmart_config.c
@@ -13,6 +13,7 @@ struct _m_usmart_nametab usmart_nametab[]=
 {
 	(void*)DEBUG,"void DEBUG(void)",
 	(void*)SDRAM_USED,"void SDRAM_USED(void)",
+	(void*)scan_files,"void scan_files(u8 * path)",
 
 	(void*)modelmym_init,"float* modelmym_init(char* model_name)",
 	(void*)modelmym_free,"u8 modelmym_free(char* model_name)",
diff --git a/USER/FATFS.uvoptx b/USER/FATFS.uvoptx
index faba5a9..7553ed9 100644
--- a/USER/FATFS.uvoptx
+++ b/USER/FATFS.uvoptx
@@ -723,7 +723,7 @@
 
   <Group>
     <GroupName>USMART</GroupName>
-    <tvExp>0</tvExp>
+    <tvExp>1</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -767,7 +767,7 @@
 
   <Group>
     <GroupName>FATFS</GroupName>
-    <tvExp>0</tvExp>
+    <tvExp>1</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -823,7 +823,7 @@
 
   <Group>
     <GroupName>CNN</GroupName>
-    <tvExp>0</tvExp>
+    <tvExp>1</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
@@ -863,6 +863,18 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>9</GroupNumber>
+      <FileNumber>52</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>..\PORTING\CNN\tools.c</PathWithFileName>
+      <FilenameWithoutPath>tools.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
 </ProjectOpt>