/*********************************
版???????????權:
文??件???名:ov7725.c
作???????????者:狄蘭蘭
創建日期:20090213
版???????????本:02.00.01
功能描述:cmos圖像傳感器驅動程序，
???????????????????????完成VGA、QVGA、QQVGA、CIF、QCIF?
修改歷程:1、20090213?創建

*********************************/
#include?
#include?

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#include?“ov7725.h“
#include?“gpio_i2c.h“

#define?SCCB_OV7725_ADDR?0x42

/*
*?size?=?0:?VGA
*?size?=?1:?QVGA
*?size?=?2:?QQVGA
*?size?=?3:?CIF
*?size?=?4:?QCIF
*/
static?int?size?=?0;

/*?set?output?drive?capability
?*?param:multi?=?0/1/2/3
?*?return?0:set?success?return?1:set?error
?*/
static?unsigned?int?set_output_drivecap（unsigned?char?multi?）
{
	switch（multi）
	{
	case?0:
		gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM2?0x00）;
		break;
	case?1:
		gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM2?0x01）;
		break;
	case?2:
		gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM2?0x02）;
		break;
	case?3:
		gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM2?0x03）;
		break;
	default:
		return?1;
	}
	return?0;
}

/*?set?output?video?data?format
?*?param:?mode?=?0/1/2/3/4
?*?return?0:set?success?return?1:set?error
?*/
static?unsigned?int?set_output_format（output_format?form）
{
????unsigned?char?regval;
????switch（form）
????{
????????case?YUV:
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM3?0x10）;//swap?Y/UV?output?sequence
????????????gpio_i2c_write（SCCB_OV7725_ADDR?0x66?0x00）;????????//U0Y0V1Y1U2Y2V3Y3....
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADDR?DC_COM7）;
????????????SET_BIT（regval?0x20）;
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM7?regval）;//BT.656?protocol?onYUV?output
????????????break;	
????????case?GBR422:
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADDR?DC_COM7）;
????????????SET_BIT（regval?0x02）;
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM7?regval）;
????????????break;
????????case?RGB565:
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADDR?DC_COM7）;
????????????SET_BIT（regval?0x06）;
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM7?regval）;
????????????break;
????????case?RGB555:
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADDR?DC_COM7）;
????????????SET_BIT（regval?0x0a）;
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM7?regval）;
????????????break;
	case?RGB444:
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADDR?DC_COM7）;
????????????SET_BIT（regval?0x0e）;
????????????gpio_i2c_write（SCCB_OV7725_ADDR?DC_COM7?regval）;
????????????break;
	case?PROBRAW:
????????????gpio_i2c_write（SCCB_OV7725_ADDR?0x67?0x4a）;//DSP?output?RAW8
????????????regval?=?gpio_sccb_read（SCCB_OV7725_ADD