#define OV23850_MAX_GAIN (16 << OV23850_GAIN_SHIFT)
#define OV23850_MIN_FRAME_LENGTH (0x0)
#define OV23850_MAX_FRAME_LENGTH (0x7fff)
-#define OV23850_MIN_EXPOSURE_COARSE (0x0001)
+#define OV23850_MIN_EXPOSURE_COARSE (0x0002)
#define OV23850_MAX_EXPOSURE_COARSE \
(OV23850_MAX_FRAME_LENGTH-OV23850_MAX_COARSE_DIFF)