int ov7725_probe(uint8_t i2c_instance)
{
int i,j;
int r;
uint8_t dummy;
for(i = 0; i < ARRAY_SIZE(ov7725_addr); i++)
{
if(!SCCB_ReadSingleRegister(i2c_instance, ov7725_addr[i], OV7725_VER, &dummy))
{
/* found device */
//OV7725_TRACE("device found addr:0x%X\r\n", ov7725_addr[i]);
/* reset */
SCCB_WriteSingleRegister(i2c_instance, ov7725_addr[i], OV7725_COM7, 0x80);
/* inject default register value */
for(j = 0; j < ARRAY_SIZE(reg_tbl); j++)
{
DelayMs(1);
r = SCCB_WriteSingleRegister(i2c_instance, ov7725_addr[i], reg_tbl[j].addr, reg_tbl[j].val);
if(r)
{
OV7725_TRACE("device[addr:0x%X]regiser[addr:0x%X] write error!\r\n", ov7725_addr[i], reg_tbl[j].addr);
}
}
h_ov7725.addr = ov7725_addr[i];
h_ov7725.i2c_instance = i2c_instance;
h_ov7725.h_size = 80;
h_ov7725.v_size = 60;
return 0;
}
}
OV7725_TRACE("no sccb device found!\r\n");
return 1;
}
int ov7725_set_image_size(ov7725_size size)
{
switch(size)
{
case H_80_W_60:
h_ov7725.h_size = 80;
h_ov7725.v_size = 60;
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_HOutSize, 0x14);
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_VOutSize, 0x1E);
break;
case H_120_W_160:
h_ov7725.h_size = 160;
h_ov7725.v_size = 120;
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_HOutSize, 0x28);
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_VOutSize, 0x3C);
break;
case H_180_W_240:
h_ov7725.h_size = 240;
h_ov7725.v_size = 180;
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_HOutSize, 0x3C);
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_VOutSize, 0x5A);
break;
case H_240_W_320:
h_ov7725.h_size = 320;
h_ov7725.v_size = 240;
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_HOutSize, 0x50);
SCCB_WriteSingleRegister(h_ov7725.i2c_instance, h_ov7725.addr, OV7725_VOutSize, 0x78);
break;
default:
OV7725_TRACE("wrong param in func:ov7725_set_image_size\r\n");
break;
}
return 0;
}
void OV7620_Reset(void)
{
SCCB_WriteSingleRegister(HW_I2C0, OV7620_I2C_CHIP_ADDR, 0x12, 0x80);
}
