diff --git a/dvp2sdcard/main.c b/dvp2sdcard/main.c
index d604e53..ec83e94 100644
--- a/dvp2sdcard/main.c
+++ b/dvp2sdcard/main.c
@@ -249,7 +249,7 @@ int main(void)
 
         if (g_save_flag)
         {
-            rgb565tobmp((char*)(g_ram_mux ? g_lcd_gram0 : g_lcd_gram1), 320, 240, _T("0:photo.bmp"));
+            rgb565tobmp((uint8_t*)(g_ram_mux ? g_lcd_gram0 : g_lcd_gram1), 320, 240, _T("0:photo.bmp"));
             g_save_flag = 0;
         }
         /* display pic*/        
diff --git a/dvp2sdcard/rgb2bmp.c b/dvp2sdcard/rgb2bmp.c
index 9a466ab..d158774 100644
--- a/dvp2sdcard/rgb2bmp.c
+++ b/dvp2sdcard/rgb2bmp.c
@@ -1,11 +1,14 @@
 #include "rgb2bmp.h"
 #include "ff.h"
 
-int rgb565tobmp(char *buf,int width,int height, const char *filename)
+int rgb565tobmp(uint8_t *buf,int width,int height, const char *filename)
 {
 	FIL file;
     FRESULT ret = FR_OK;
     uint32_t ret_len = 0;
+    uint32_t i;
+    uint16_t temp;
+    uint16_t *ptr;
     
 	BitMapFileHeader bmfHdr;    /* file header */
 	BitMapInfoHeader bmiHdr;    /* information header */
@@ -45,6 +48,15 @@ int rgb565tobmp(char *buf,int width,int height, const char *filename)
 	bmfHdr.bfReserved2 = 0;
 	bmfHdr.bfOffBits = sizeof(BitMapFileHeader) + sizeof(BitMapInfoHeader)+ sizeof(RgbQuad) * 3;
 
+    ptr = (uint16_t*)buf;
+    
+    for (i = 0; i < width * height; i += 2)
+    {
+        temp = ptr[i];
+        ptr[i] = ptr[i + 1];
+        ptr[i + 1] = temp;
+    }
+
     if ((ret = f_open(&file, filename, FA_CREATE_ALWAYS | FA_WRITE)) != FR_OK) 
     {
         printf("create file %s err[%d]\n", filename, ret);
diff --git a/dvp2sdcard/rgb2bmp.h b/dvp2sdcard/rgb2bmp.h
index 48330ab..6ee15a3 100644
--- a/dvp2sdcard/rgb2bmp.h
+++ b/dvp2sdcard/rgb2bmp.h
@@ -35,6 +35,6 @@ typedef struct tagRGBQUAD{
 	uint8_t rgbReserved;/* reserved */
 }__attribute__((packed)) RgbQuad;
 
-int rgb565tobmp(char *buf,int width,int height, const char *filename);
+int rgb565tobmp(uint8_t *buf,int width,int height, const char *filename);
 
 #endif