stm32和ov7670图像采集串口上位机显示文档格式.docx
- 文档编号:21987099
- 上传时间:2023-02-02
- 格式:DOCX
- 页数:13
- 大小:990.30KB
stm32和ov7670图像采集串口上位机显示文档格式.docx
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(引用于网络论坛,感谢他的分享)
{0x12,0x10},//QVGAYUV
{0x3a,0x14},//使用固定UV输出
{0x3d,0x80},//使用固定UV输出
{0x67,0x11},//固定U值,0x11,方便测试
{0x68,0xFF},//固定V值,0xFF,方便测试
{0x40,0xC0},//初始配置,YUV模式,这个寄存器必须设置,否则不好使
为方便调试,都是用固定的U值和V值,
向67中写入11,向68中写入FF,出来的是XX11XXFF,说明配置成功。
要注意的就是{0x40,0xC0},这个必须设置成初始化值,默认配置便是YUV,不能再用RGB565的配置。
顺便说一句,YUV模式为YUV4:
2:
2,不是说8位里面4位Y,2位U,2位V的意思,Y/U/V都是8位数据,只是U和V是隔着Y轮流输出的,高字节的是Y,低字节为U或V,做飞思卡尔智能车一般用的OV7620就是这样,一般只用Y的数据,用来判断黑白。
八:
我的程序说明,各引脚(懒得打字,请看图片吧),串口用的是STM32的UART3,还有需要注意的是我是用一个外部按键作为一帧图片的发送,每按一次发送帧的图片信号,用的是PA3。
有不完善之处欢迎指正,请到原文出处下载工程和交流:
寄存器配置
voidset_Cmos7670reg(void)
{
WrCmos7670(0x67,0xaa);
WrCmos7670(0x68,0x55);
WrCmos7670(0x3a,0x14);
WrCmos7670(0x40,0xC0);
WrCmos7670(0x12,0x10);
WrCmos7670(0x32,0x80);
WrCmos7670(0x17,0x16);
WrCmos7670(0x18,0x04);
WrCmos7670(0x19,0x02);
WrCmos7670(0x1a,0x7b);
WrCmos7670(0x03,0x06);
WrCmos7670(0x0c,0x00);
WrCmos7670(0x3e,0x00);
WrCmos7670(0x70,0x3a);
WrCmos7670(0x71,0x35);
WrCmos7670(0x72,0x11);
WrCmos7670(0x73,0x00);
WrCmos7670(0xa2,0x02);
WrCmos7670(0x11,0x81);
WrCmos7670(0x7a,0x20);
WrCmos7670(0x7b,0x1c);
WrCmos7670(0x7c,0x28);
WrCmos7670(0x7d,0x3c);
WrCmos7670(0x7e,0x55);
WrCmos7670(0x7f,0x68);
WrCmos7670(0x80,0x76);
WrCmos7670(0x81,0x80);
WrCmos7670(0x82,0x88);
WrCmos7670(0x83,0x8f);
WrCmos7670(0x84,0x96);
WrCmos7670(0x85,0xa3);
WrCmos7670(0x86,0xaf);
WrCmos7670(0x87,0xc4);
WrCmos7670(0x88,0xd7);
WrCmos7670(0x89,0xe8);
WrCmos7670(0x13,0xe0);
WrCmos7670(0x00,0x00);
WrCmos7670(0x10,0x00);
WrCmos7670(0x0d,0x00);
WrCmos7670(0x14,0x28);
WrCmos7670(0xa5,0x05);
WrCmos7670(0xab,0x07);
WrCmos7670(0x24,0x75);
WrCmos7670(0x25,0x63);
WrCmos7670(0x26,0xA5);
WrCmos7670(0x9f,0x78);
WrCmos7670(0xa0,0x68);
WrCmos7670(0xa1,0x03);
WrCmos7670(0xa6,0xdf);
WrCmos7670(0xa7,0xdf);
WrCmos7670(0xa8,0xf0);
WrCmos7670(0xa9,0x90);
WrCmos7670(0xaa,0x94);
WrCmos7670(0x13,0xe5);
WrCmos7670(0x0e,0x61);
WrCmos7670(0x0f,0x4b);
WrCmos7670(0x16,0x02);
WrCmos7670(0x1e,0x37);
WrCmos7670(0x21,0x02);
WrCmos7670(0x22,0x91);
WrCmos7670(0x29,0x07);
WrCmos7670(0x33,0x0b);
WrCmos7670(0x35,0x0b);
WrCmos7670(0x37,0x1d);
WrCmos7670(0x38,0x71);
WrCmos7670(0x39,0x2a);
WrCmos7670(0x3c,0x78);
WrCmos7670(0x4d,0x40);
WrCmos7670(0x4e,0x20);
WrCmos7670(0x69,0x00);
WrCmos7670(0x6b,0x60);
WrCmos7670(0x74,0x19);
WrCmos7670(0x8d,0x4f);
WrCmos7670(0x8e,0x00);
WrCmos7670(0x8f,0x00);
WrCmos7670(0x90,0x00);
WrCmos7670(0x91,0x00);
WrCmos7670(0x92,0x00);
WrCmos7670(0x96,0x00);
WrCmos7670(0x9a,0x80);
WrCmos7670(0xb0,0x84);
WrCmos7670(0xb1,0x0c);
WrCmos7670(0xb2,0x0e);
WrCmos7670(0xb3,0x82);
WrCmos7670(0xb8,0x0a);
WrCmos7670(0x43,0x14);
WrCmos7670(0x44,0xf0);
WrCmos7670(0x45,0x34);
WrCmos7670(0x46,0x58);
WrCmos7670(0x47,0x28);
WrCmos7670(0x48,0x3a);
WrCmos7670(0x59,0x88);
WrCmos7670(0x5a,0x88);
WrCmos7670(0x5b,0x44);
WrCmos7670(0x5c,0x67);
WrCmos7670(0x5d,0x49);
WrCmos7670(0x5e,0x0e);
WrCmos7670(0x64,0x04);
WrCmos7670(0x65,0x20);
WrCmos7670(0x66,0x05);
WrCmos7670(0x94,0x04);
WrCmos7670(0x95,0x08);
WrCmos7670(0x6c,0x0a);
WrCmos7670(0x6d,0x55);
WrCmos7670(0x6e,0x11);
WrCmos7670(0x6f,0x9f);
WrCmos7670(0x6a,0x40);
WrCmos7670(0x01,0x40);
WrCmos7670(0x02,0x40);
WrCmos7670(0x13,0xe7);
WrCmos7670(0x15,0x00);
WrCmos7670(0x4f,0x80);
WrCmos7670(0x50,0x80);
WrCmos7670(0x51,0x00);
WrCmos7670(0x52,0x22);
WrCmos7670(0x53,0x5e);
WrCmos7670(0x54,0x80);
WrCmos7670(0x58,0x9e);
WrCmos7670(0x41,0x08);
WrCmos7670(0x3f,0x00);
WrCmos7670(0x75,0x05);
WrCmos7670(0x76,0xe1);
WrCmos7670(0x4c,0x00);
WrCmos7670(0x77,0x01);
WrCmos7670(0x3d,0x80);
WrCmos7670(0x4b,0x09);
WrCmos7670(0xc9,0x60);
WrCmos7670(0x41,0x38);
WrCmos7670(0x56,0x40);
WrCmos7670(0x34,0x11);
WrCmos7670(0x3b,0x02);
WrCmos7670(0xa4,0x89);
WrCmos7670(0x97,0x30);
WrCmos7670(0x98,0x20);
WrCmos7670(0x99,0x30);
WrCmos7670(0x9a,0x84);
WrCmos7670(0x9b,0x29);
WrCmos7670(0x9c,0x03);
WrCmos7670(0x9d,0x4c);
WrCmos7670(0x9e,0x3f);
WrCmos7670(0x78,0x04);
WrCmos7670(0x79,0x01);
WrCmos7670(0xc8,0xf0);
WrCmos7670(0x79,0x0f);
WrCmos7670(0xc8,0x00);
WrCmos7670(0x79,0x10);
WrCmos7670(0xc8,0x7e);
WrCmos7670(0x79,0x0a);
WrCmos7670(0xc8,0x80);
WrCmos7670(0x79,0x0b);
WrCmos7670(0xc8,0x01);
WrCmos7670(0x79,0x0c);
WrCmos7670(0xc8,0x0f);
WrCmos7670(0x79,0x0d);
WrCmos7670(0xc8,0x20);
WrCmos7670(0x79,0x09);
WrCmos7670(0x79,0x02);
WrCmos7670(0xc8,0xc0);
WrCmos7670(0x79,0x03);
WrCmos7670(0xc8,0x40);
WrCmos7670(0x79,0x05);
WrCmos7670(0xc8,0x30);
WrCmos7670(0x79,0x26);
WrCmos7670(0x09,0x00);
}
图片采集发送
voidEXTI1_IRQHandler(void)
{
u16i,j,k=0;
u8t1,t2;
EXTI_InitTypeDefEXTI_InitStructure;
NVIC_InitTypeDefNVIC_InitStructure;
EXTI_ClearITPendingBit(EXTI_Line1);
Vsync_Flag++;
if(Vsync_Flag==1)//FIFOD
{
GPIO_SetBits(GPIOE,GPIO_Pin_5);
//FIFO_WRST=1;
__asm{nop;
GPIO_ResetBits(GPIOE,GPIO_Pin_5);
//FIFO_WRST=0;
delay_us
(2);
GPIO_SetBits(GPIOE,GPIO_Pin_3);
}
if(Vsync_Flag==2)
{
GPIO_ResetBits(GPIOE,GPIO_Pin_3);
//FIFO_WR=0;
//½
û
Ö
¹
Ê
ý
¾
Ý
Ð
´
È
ë
FIFO
EXTI->
IMR&
=~(1<
<
4);
//¹
Ø
±
Õ
Í
â
²
¿
¶
Ï
EMR&
=EXTI_Line1;
=EXTI_Mode_Interrupt;
=EXTI_Trigger_Falling;
=DISABLE;
EXTI_Init(&
EXTI_InitStructure);
//
=TIM2_IRQn;
=0;
NVIC_Init(&
NVIC_InitStructure);
//
GPIO_SetBits(GPIOE,GPIO_Pin_4);
//FIFO_RCK=1;
GPIO_ResetBits(GPIOE,GPIO_Pin_6);
//FIFO_RRST=0;
//¶
Á
¸
Î
»
GPIO_ResetBits(GPIOE,GPIO_Pin_4);
//FIFO_RCK=0;
}__asm{nop;
GPIO_SetBits(GPIOE,GPIO_Pin_6);
//FIFO_RRST=1;
delay_us
(2);
GPIO_ResetBits(GPIOE,GPIO_Pin_2);
//FIFO_OE=0;
//
USART3_Putc(0xff);
//请注意:
这里是发送协议信号,不是图像信号
for(i=0;
i<
9600;
i++)
{
for(j=0;
j<
8;
j++)
{
GPIO_ResetBits(GPIOE,GPIO_Pin_4);
//FIFO_RCK=0;
__asm{nop;
GPIO_SetBits(GPIOE,GPIO_Pin_4);
//FIFO_RCK=1;
t1=(0x00ff&
GPIOC->
IDR);
t2=(0x00ff&
USART3_Putc(t1);
}
k=0;
}
GPIO_SetBits(GPIOE,GPIO_Pin_2);
//FIFO_OE=1;
Vsync_Flag=0;
=ENABLE;
IMR|=(1<
EMR|=(1<
}
最后上图才有真相,电路虽然丑点但是可以用的。
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- stm32 ov7670 图像 采集 串口 上位 显示