原子哥啊！我根据OV7670程序改OV7725，初始化没成功怎么办啊

普勒士

const u8 ov7670_init_reg_tbl[][2]=

{

   /*以下为OV7725QVGA RGB565参数  */

  

  {0x32,0x00},

  {0x2a,0x00},

  {0x11,0x00},

  {0x12,0x46},//QVGA RGB565

  //{0x12,0x06},

  

  {0x42,0x7f},

  {0x4d,0x00},//0x09

  {0x63,0xf0},

  {0x64,0x1f},

  {0x65,0xff},

  {0x66,0x00},

  {0x67,0x00},

  {0x69,0x00},  

 

  

  {0x13,0xff},

  {0x0d,0x01},//PLL

  {0x0f,0xc5},

  {0x14,0x11},//agc

  {0x22,0xFF},//7f

  {0x23,0x01},

  {0x24,0x76},

  {0x25,0x50},

  {0x26,0xa1},

  {0x2b,0x00},

  {0x6b,0xaa},

  {0x13,0xff},

  {0x90,0x0a},//

  {0x91,0x01},//

  {0x92,0x01},//

  {0x93,0x01},

  

  {0x94,0x5f},

  {0x95,0x53},

  {0x96,0x11},

  {0x97,0x1a},

  {0x98,0x3d},

  {0x99,0x5a},

  {0x9a,0x9e},

  

  {0x9b,0x00},//set luma 

  {0x9c,0x30},//set contrast 

  {0xa7,0x40},//set saturation  

  {0xa8,0x40},//set saturation 

  {0xa9,0x80},//set hue 

  {0xaa,0x80},//set hue 

  

  {0x9e,0x11},

  {0x9f,0x02},

  {0xa6,0x06},

  {0x7e,0x0c},

  {0x7f,0x16},

  {0x80,0x2a},

  {0x81,0x4e},

  {0x82,0x61},

  {0x83,0x6f},

  {0x84,0x7b},

  {0x85,0x86},

  {0x86,0x8e},

  {0x87,0x97},

  {0x88,0xa4},

  {0x89,0xaf},

  {0x8a,0xc5},

  {0x8b,0xd7},

  {0x8c,0xe8},

  {0x8d,0x20},

  

  {0x4e,0xef},

  {0x4f,0x10}, 

  {0x50,0x60},

  {0x51,0x00},

  {0x52,0x00},

  {0x53,0x24},

  {0x54,0x7a},

  {0x55,0xfc},

  {0x33,0x00},

  {0x22,0x99},

  {0x23,0x03},

  {0x4a,0x00},

  {0x49,0x13},

  {0x47,0x08},

  {0x4b,0x14},

  {0x4c,0x17},

  {0x46,0x05},

  {0x0e,0x75},

  {0x3d,0x82},

  {0x0c,0x50},

  {0x3e,0xe2},

  

  {0x29,0x50},

  {0x2c,0x78},

};

初始化的代码如下：

  if(SCCB_WR_Reg(0x12,0x80));return 1; //复位SCCB  

delay_ms(50); 

//读取产品型号

  temp=SCCB_RD_Reg(0x0b);   

if(temp!=0x21)return 2;   //7670为0x73

temp=SCCB_RD_Reg(0x0a);   

if(temp!=0x77)return 2;

//初始化序列  

for(i=0;i<sizeof(ov7670_init_reg_tbl)/sizeof(ov7670_init_reg_tbl[0]);i++)

{

  SCCB_WR_Reg(ov7670_init_reg_tbl[0],ov7670_init_reg_tbl[1]);

delay_ms(2);

  }

    return 0x00; //ok

我把ID改为0x21,  r然后读取ID地址也改为0x21 0x77  但是失败了   LCD没任何动静

正点原子

没用过7725啊,呵呵

哇哈哈0608

SCCB总线成功了吗？

buliuxing

楼主调通了吗

普勒士

回复【4楼】buliuxing:
---------------------------------
没通。。

chenwangchris

回复【5楼】普勒士:
---------------------------------
你好，我也买了OV7725摄像头，给了示例程序，但是看不懂：
int main(void)
{
uint16_t i,j;
// uint8_t pixel_r,pixel_g1,pixel_g,pixel_g2,pixel_b,pixel_y1,pixel_y,pixel_y2,pixel_u,pixel_v;
RCC_Configuration();

GPIO_Configuration();
sccb_init();
OVPORT_Init();
USART1_Configuration();
NVIC_Configuration();
EXTI_Configuration();
    ov7725_init();

usart_putchar('a');
usart_putchar('b');

    while(1)
{
if(RxBuffer=='R')
{
RxBuffer='\0';
read_reset();
__nop();
__nop();
__nop();

    __nop();
__nop();
__nop();

    write_reset();
__nop();
__nop();
__nop();

    __nop();
__nop();
__nop();

  while(GPIO_ReadInputDataBit(GPIOB,VSYNC));
  while(!GPIO_ReadInputDataBit(GPIOB,VSYNC));

  GPIO_SetBits(GPIOC,TRI);

   EXTI->IMR |= 0x01;
   Delay_0();
for(i=0;i<480;i++)
{

for(j=0;j<640;j++)
{
GPIO_SetBits(GPIOC,RCK);
usart_putchar((uint8_t)GPIO_ReadInputData(GPIOC));
GPIO_ResetBits(GPIOC,RCK);
 }
}



}
}
}
您能告诉我main函数中最后一部分
usart_putchar((uint8_t)GPIO_ReadInputData(GPIOC));
这是在输出摄像头拍到的图像吗

正点原子

回复【6楼】chenwangchris:
---------------------------------
这是不停的输出摄像头数据到串口，但是你串口还得有个解码软件才行....

chenwangchris

回复【7楼】正点原子:
---------------------------------
这解码软件是安装在PC机上的？

正点原子

回复【8楼】chenwangchris:
---------------------------------
是

chenwangchris

回复【7楼】正点原子:
---------------------------------
原子哥，能推荐个解码软件吗

正点原子

回复【10楼】chenwangchris:
---------------------------------
没得推荐。

阿斯卡

ID还是0X42，不用改
还有你必须先验证一下能不能正确复位SCCB，不能的话，得稍微改一下SCCB的函数，我开始的时候是不能初始化的，改了一下SCCB_STOP函数就可以了

qwt3916

回复【12楼】阿斯卡:
---------------------------------
请问你是怎么改的？？？