diff --git a/build/libraries/camera/ARM7/camera_i2c.c b/build/libraries/camera/ARM7/camera_i2c.c
index 24444cc..2e03018 100644
--- a/build/libraries/camera/ARM7/camera_i2c.c
+++ b/build/libraries/camera/ARM7/camera_i2c.c
@@ -31,11 +31,11 @@ extern BOOL CAMERAi_I2CPreset_A3AFX_EVT3_30fps_Subsampling_16_7M_50Hz( void );
 typedef BOOL (*CameraI2CPresetFunc)(void);
 
 static CameraI2CPresetFunc gs_preset[] = {
-    CAMERAi_I2CPreset_A3AFX_EVT2_20fps_16M_PLLoff_hVGA,
-    CAMERAi_I2CPreset_A3AFX_EVT2_30fps_16M_QVGA,
+//    CAMERAi_I2CPreset_A3AFX_EVT2_20fps_16M_PLLoff_hVGA,
+//    CAMERAi_I2CPreset_A3AFX_EVT2_30fps_16M_QVGA,
     CAMERAi_I2CPreset_A3AFX_EVT2_20fps_16M,
-    CAMERAi_I2CPreset_320x240_noPLL_20fps,
-    CAMERAi_I2CPreset_320x240_PLL_30fps,
+//    CAMERAi_I2CPreset_320x240_noPLL_20fps,
+//    CAMERAi_I2CPreset_320x240_PLL_30fps,
     CAMERAi_I2CPreset_A3AFX_EVT3_30fps_Scaledown_16_7M_50Hz,
     CAMERAi_I2CPreset_A3AFX_EVT3_30fps_Subsampling_16_7M_50Hz,
 };
diff --git a/build/libraries/camera/ARM7/convert.pl b/build/libraries/camera/ARM7/convert.pl
index 06d5a56..c331087 100644
--- a/build/libraries/camera/ARM7/convert.pl
+++ b/build/libraries/camera/ARM7/convert.pl
@@ -23,9 +23,8 @@ my $file_head_format =<<'EOF';
 //#define PRINT_DEBUG
 
 #ifdef PRINT_DEBUG
-#include <twl/vlink.h>
-#define DBG_PRINTF vlink_dos_printf
-#define DBG_CHAR vlink_dos_put_console
+#include <nitro/os/common/printf.h>
+#define DBG_PRINTF OS_TPrintf
 #else
 #define DBG_PRINTF( ... )  ((void)0)
 #define DBG_CHAR( c )      ((void)0)
diff --git a/build/tests/camera/camera-1/ARM9/src/main.c b/build/tests/camera/camera-1/ARM9/src/main.c
index 7420ac9..3cb1260 100644
--- a/build/tests/camera/camera-1/ARM9/src/main.c
+++ b/build/tests/camera/camera-1/ARM9/src/main.c
@@ -35,6 +35,8 @@ static void CameraIntr(void);
  *---------------------------------------------------------------------------*/
 void TwlMain()
 {
+    CAMERAResult result;
+
     // ������
     OS_Init();
     GX_Init();
@@ -63,8 +65,13 @@ void TwlMain()
 
     CAMERA_SelectCamera(CAMERA_SELECT_FIRST);
     CAMERA_PowerOn();
-    CAMERA_I2CInit();
-    CAMERA_I2CPreset(CAMERA_PRESET_QVGA_30SD);
+    result = CAMERA_I2CInit();
+    if (result != CAMERA_RESULT_SUCCESS_TRUE)
+        OS_TPrintf("CAMERA_I2CInit was failed. (%d)\n", result);
+    result = CAMERA_I2CPreset(CAMERA_PRESET_VGA_20);
+    if (result != CAMERA_RESULT_SUCCESS_TRUE)
+        OS_TPrintf("CAMERA_I2CPreset was failed. (%d)\n", result);
+    CAMERA_SetCropping(0, 0, 320, 240);
 
     CAMERA_SetTrimmingParamsCenter(WIDTH, HEIGHT, 320, 240);    // clipped by camera i/f
     CAMERA_SetTrimming(TRUE);
@@ -119,7 +126,7 @@ void CameraIntr(void)
         OSTick current = OS_GetTick();
         if (MIi_IsExDmaBusy(DMA_NO))
         {
-            OS_TPrintf("Why??? %d\n", (int)current);
+            OS_TPrintf("DMA was not done until VBlank.\n");
             OS_SetIrqCheckFlag(OS_IE_CAM);
             return;
         }
diff --git a/include/twl/camera/common/types.h b/include/twl/camera/common/types.h
index 39f2593..f371dd8 100644
--- a/include/twl/camera/common/types.h
+++ b/include/twl/camera/common/types.h
@@ -46,16 +46,16 @@ typedef enum {
 } CameraSpecialMode;
 
 typedef enum {
-    CAMERA_PRESET_HVGA_20,
-    CAMERA_PRESET_DS_30,
+//    CAMERA_PRESET_HVGA_20,
+//    CAMERA_PRESET_DS_30,
     CAMERA_PRESET_VGA_20,
-    CAMERA_PRESET_QVGA_20,
-    CAMERA_PRESET_QVGA_30,
+//    CAMERA_PRESET_QVGA_20,
+//    CAMERA_PRESET_QVGA_30,
     CAMERA_PRESET_QVGA_30SD,
     CAMERA_PRESET_QVGA_30SS,
     CAMERA_PRESET_MAX,
 
-    CAMERA_PRESET_DEFAULT = CAMERA_PRESET_HVGA_20
+    CAMERA_PRESET_DEFAULT = CAMERA_PRESET_QVGA_30SD
 } CameraPreset;
 
 
diff --git a/include/twl/i2c/ARM7/i2c.h b/include/twl/i2c/ARM7/i2c.h
index 5fafb08..ef8422c 100644
--- a/include/twl/i2c/ARM7/i2c.h
+++ b/include/twl/i2c/ARM7/i2c.h
@@ -32,7 +32,7 @@ extern "C" {
 typedef enum
 {
     I2C_SLAVE_CODEC_TP = 0,
-    I2C_SLAVE_CAMERA = 2,
+    I2C_SLAVE_CAMERA,
     I2C_SLAVE_NUM
 }
 I2CSlave;