基于OV7670拍照程序,100%可用
制作出来的实物图如下:
单片机源程序如下:
- #include "sys.h"
- #include "ov7670.h"
- #include "ov7670cfg.h"
- #include "timer.h"
- #include "delay.h"
- #include "usart.h"
- #include "sccb.h"
- #include "exti.h"
-
- //初始化OV7670
- //返回0:成功
- //返回其他值:错误代码
- u8 OV7670_Init(void)
- {
- u8 temp;
- u16 i=0;
- //设置IO
- GPIO_InitTypeDef GPIO_InitStructure;
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOG|RCC_APB2Periph_AFIO, ENABLE); //使能相关端口时钟
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; //PA8 输入 上拉
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOA, &GPIO_InitStructure);
- GPIO_SetBits(GPIOA,GPIO_Pin_8);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4; // 端口配置
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_SetBits(GPIOB,GPIO_Pin_3|GPIO_Pin_4);
-
- GPIO_InitStructure.GPIO_Pin = 0xff; //PC0~7 输入 上拉
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
-
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_Init(GPIOD, &GPIO_InitStructure);
- GPIO_SetBits(GPIOD,GPIO_Pin_6);
-
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14|GPIO_Pin_15;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_Init(GPIOG, &GPIO_InitStructure);
- GPIO_SetBits(GPIOG,GPIO_Pin_14|GPIO_Pin_15);
-
- GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE); //SWD
- SCCB_Init(); //初始化SCCB 的IO口
- 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!=0x73)return 2;
- temp=SCCB_RD_Reg(0x0a);
- if(temp!=0x76)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[i][0],ov7670_init_reg_tbl[i][1]);
- }
- return 0x00; //ok
- }
- ////////////////////////////////////////////////////////////////////////////
- //OV7670功能设置
- //白平衡设置
- //0:自动
- //1:太阳sunny
- //2,阴天cloudy
- //3,办公室office
- //4,家里home
- void OV7670_Light_Mode(u8 mode)
- {
- u8 reg13val=0XE7;//默认就是设置为自动白平衡
- u8 reg01val=0;
- u8 reg02val=0;
- switch(mode)
- {
- case 1://sunny
- reg13val=0XE5;
- reg01val=0X5A;
- reg02val=0X5C;
- break;
- case 2://cloudy
- reg13val=0XE5;
- reg01val=0X58;
- reg02val=0X60;
- break;
- case 3://office
- reg13val=0XE5;
- reg01val=0X84;
- reg02val=0X4c;
- break;
- case 4://home
- reg13val=0XE5;
- reg01val=0X96;
- reg02val=0X40;
- break;
- }
- SCCB_WR_Reg(0X13,reg13val);//COM8设置
- SCCB_WR_Reg(0X01,reg01val);//AWB蓝色通道增益
- SCCB_WR_Reg(0X02,reg02val);//AWB红色通道增益
- }
- //色度设置
- //0:-2
- //1:-1
- //2,0
- //3,1
- //4,2
- void OV7670_Color_Saturation(u8 sat)
- {
- u8 reg4f5054val=0X80;//默认就是sat=2,即不调节色度的设置
- u8 reg52val=0X22;
- u8 reg53val=0X5E;
- switch(sat)
- {
- case 0://-2
- reg4f5054val=0X40;
- reg52val=0X11;
- reg53val=0X2F;
- break;
- case 1://-1
- reg4f5054val=0X66;
- reg52val=0X1B;
- reg53val=0X4B;
- break;
- case 3://1
- reg4f5054val=0X99;
- reg52val=0X28;
- reg53val=0X71;
- break;
- case 4://2
- reg4f5054val=0XC0;
- reg52val=0X33;
- reg53val=0X8D;
- break;
- }
- SCCB_WR_Reg(0X4F,reg4f5054val); //色彩矩阵系数1
- SCCB_WR_Reg(0X50,reg4f5054val); //色彩矩阵系数2
- SCCB_WR_Reg(0X51,0X00); //色彩矩阵系数3
- SCCB_WR_Reg(0X52,reg52val); //色彩矩阵系数4
- SCCB_WR_Reg(0X53,reg53val); //色彩矩阵系数5
- SCCB_WR_Reg(0X54,reg4f5054val); //色彩矩阵系数6
- SCCB_WR_Reg(0X58,0X9E); //MTXS
- }
- //亮度设置
- //0:-2
- //1:-1
- //2,0
- //3,1
- //4,2
- void OV7670_Brightness(u8 bright)
- {
- u8 reg55val=0X00;//默认就是bright=2
- switch(bright)
- {
- case 0://-2
- reg55val=0XB0;
- break;
- case 1://-1
- reg55val=0X98;
- break;
- case 3://1
- reg55val=0X18;
- break;
- case 4://2
- reg55val=0X30;
- break;
- }
- SCCB_WR_Reg(0X55,reg55val); //亮度调节
- }
- //对比度设置
- //0:-2
- //1:-1
- //2,0
- //3,1
- //4,2
- void OV7670_Contrast(u8 contrast)
- {
- u8 reg56val=0X40;//默认就是contrast=2
- switch(contrast)
- {
- case 0://-2
- reg56val=0X30;
- break;
- case 1://-1
- reg56val=0X38;
- break;
- case 3://1
- reg56val=0X50;
- break;
- case 4://2
- reg56val=0X60;
- break;
- }
- SCCB_WR_Reg(0X56,reg56val); //对比度调节
- }
- //特效设置
- //0:普通模式
- //1,负片
- //2,黑白
- //3,偏红色
- //4,偏绿色
- //5,偏蓝色
- //6,复古
- void OV7670_Special_Effects(u8 eft)
- {
- u8 reg3aval=0X04;//默认为普通模式
- u8 reg67val=0XC0;
- u8 reg68val=0X80;
- switch(eft)
- {
- case 1://负片
- reg3aval=0X24;
- reg67val=0X80;
- reg68val=0X80;
- break;
- case 2://黑白
- reg3aval=0X14;
- reg67val=0X80;
- reg68val=0X80;
- break;
- case 3://偏红色
- reg3aval=0X14;
- reg67val=0Xc0;
- reg68val=0X80;
- break;
- case 4://偏绿色
- reg3aval=0X14;
- reg67val=0X40;
- reg68val=0X40;
- break;
- case 5://偏蓝色
- reg3aval=0X14;
- reg67val=0X80;
- reg68val=0XC0;
- break;
- case 6://复古
- reg3aval=0X14;
- reg67val=0XA0;
- reg68val=0X40;
- break;
- }
- SCCB_WR_Reg(0X3A,reg3aval);//TSLB设置
- SCCB_WR_Reg(0X68,reg67val);//MANU,手动U值
- SCCB_WR_Reg(0X67,reg68val);//MANV,手动V值
- }
- //设置图像输出窗口
- //对QVGA设置。
- void OV7670_Window_Set(u16 sx,u16 sy,u16 width,u16 height)
- {
- u16 endx;
- u16 endy;
- u8 temp;
- endx=sx+width*2; //V*2
- endy=sy+height*2;
- if(endy>784)endy-=784;
- temp=SCCB_RD_Reg(0X03); //读取Vref之前的值
- temp&=0XF0;
- temp|=((endx&0X03)<<2)|(sx&0X03);
- SCCB_WR_Reg(0X03,temp); //设置Vref的start和end的最低2位
- SCCB_WR_Reg(0X19,sx>>2); //设置Vref的start高8位
- SCCB_WR_Reg(0X1A,endx>>2); //设置Vref的end的高8位
- temp=SCCB_RD_Reg(0X32); //读取Href之前的值
- temp&=0XC0;
- temp|=((endy&0X07)<<3)|(sy&0X07);
- SCCB_WR_Reg(0X17,sy>>3); //设置Href的start高8位
- SCCB_WR_Reg(0X18,endy>>3); //设置Href的end的高8位
- }
复制代码
- #include "sys.h"
- #include "delay.h"
- #include "usart.h"
- #include "led.h"
- #include "lcd.h"
- #include "key.h"
- #include "usmart.h"
- #include "malloc.h"
- #include "sdio_sdcard.h"
- #include "w25qxx.h"
- #include "ff.h"
- #include "exfuns.h"
- #include "text.h"
- #include "piclib.h"
- #include "string.h"
- #include "math.h"
- #include "ov7670.h"
- #include "beep.h"
- #include "timer.h"
- #include "exti.h"
-
- extern u8 ov_sta; //在exit.c里面定义
- extern u8 ov_frame; //在timer.c里面定义
- //更新LCD显示
- void camera_refresh(void)
- {
- u32 j;
- u16 color;
- if(ov_sta)//有帧中断更新?
- {
- LCD_Scan_Dir(U2D_L2R); //从上到下,从左到右
- if(lcddev.id==0X1963)LCD_Set_Window((lcddev.width-240)/2,(lcddev.height-320)/2,240,320);//将显示区域设置到屏幕中央
- else if(lcddev.id==0X5510||lcddev.id==0X5310)LCD_Set_Window((lcddev.width-320)/2,(lcddev.height-240)/2,320,240);//将显示区域设置到屏幕中央
- LCD_WriteRAM_Prepare(); //开始写入GRAM
- OV7670_RRST=0; //开始复位读指针
- OV7670_RCK_L;
- OV7670_RCK_H;
- OV7670_RCK_L;
- OV7670_RRST=1; //复位读指针结束
- OV7670_RCK_H;
- for(j=0;j<76800;j++)
- {
- OV7670_RCK_L;
- color=GPIOC->IDR&0XFF; //读数据
- OV7670_RCK_H;
- color<<=8;
- OV7670_RCK_L;
- color|=GPIOC->IDR&0XFF; //读数据
- OV7670_RCK_H;
- LCD->LCD_RAM=color;
- }
- ov_sta=0; //清零帧中断标记
- ov_frame++;
- LCD_Scan_Dir(DFT_SCAN_DIR); //恢复默认扫描方向
- }
- }
- //文件名自增(避免覆盖)
- //组合成:形如"0:PHOTO/PIC13141.bmp"的文件名
- void camera_new_pathname(u8 *pname)
- {
- u8 res;
- u16 index=0;
- while(index<0XFFFF)
- {
- sprintf((char*)pname,"0:PHOTO/PIC%05d.bmp",index);
- res=f_open(ftemp,(const TCHAR*)pname,FA_READ);//尝试打开这个文件
- if(res==FR_NO_FILE)break; //该文件名不存在=正是我们需要的.
- index++;
- }
- }
- int main(void)
- {
- u8 res;
- u8 *pname; //带路径的文件名
- u8 key; //键值
- u8 i;
- u8 sd_ok=1; //0,sd卡不正常;1,SD卡正常.
-
- delay_init(); //延时函数初始化
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置中断优先级分组为组2:2位抢占优先级,2位响应优先级
- uart_init(115200); //串口初始化为115200
- usmart_dev.init(72); //初始化USMART
- LED_Init(); //初始化与LED连接的硬件接口
- KEY_Init(); //初始化按键
- LCD_Init(); //初始化LCD
- BEEP_Init(); //蜂鸣器初始化
- W25QXX_Init(); //初始化W25Q128
- my_mem_init(SRAMIN); //初始化内部内存池
- exfuns_init(); //为fatfs相关变量申请内存
- f_mount(fs[0],"0:",1); //挂载SD卡
- f_mount(fs[1],"1:",1); //挂载FLASH.
- POINT_COLOR=RED;
- while(font_init()) //检查字库
- {
- LCD_ShowString(30,50,200,16,16,"Font Error!");
- delay_ms(200);
- LCD_Fill(30,50,240,66,WHITE);//清除显示
- }
- Show_Str(30,50,200,16,"战舰STM32F1开发板",16,0);
- Show_Str(30,70,200,16,"照相机实验",16,0);
- Show_Str(30,90,200,16,"KEY0:拍照",16,0);
- Show_Str(30,110,200,16,"正点原子@ALIENTEK",16,0);
- Show_Str(30,130,200,16,"2015年1月20日",16,0);
- res=f_mkdir("0:/PHOTO"); //创建PHOTO文件夹
- if(res!=FR_EXIST&&res!=FR_OK) //发生了错误
- {
- Show_Str(30,150,240,16,"SD卡错误!",16,0);
- delay_ms(200);
- Show_Str(30,170,240,16,"拍照功能将不可用!",16,0);
- sd_ok=0;
- }else
- {
- Show_Str(30,150,240,16,"SD卡正常!",16,0);
- delay_ms(200);
- Show_Str(30,170,240,16,"KEY0:拍照",16,0);
- sd_ok=1;
- }
- pname=mymalloc(SRAMIN,30); //为带路径的文件名分配30个字节的内存
- while(pname==NULL) //内存分配出错
- {
- Show_Str(30,190,240,16,"内存分配失败!",16,0);
- delay_ms(200);
- LCD_Fill(30,190,240,146,WHITE);//清除显示
- delay_ms(200);
- }
- while(OV7670_Init())//初始化OV7670
- {
- Show_Str(30,190,240,16,"OV7670 错误!",16,0);
- delay_ms(200);
- LCD_Fill(30,190,239,206,WHITE);
- delay_ms(200);
- }
- Show_Str(30,190,200,16,"OV7670 正常",16,0);
- delay_ms(1500);
- TIM6_Int_Init(10000,7199); //10Khz计数频率,1秒钟中断
- EXTI8_Init(); //使能定时器捕获
- OV7670_Window_Set(12,176,240,320); //设置窗口
- OV7670_CS=0;
- LCD_Clear(BLACK);
- while(1)
- {
- key=KEY_Scan(0);//不支持连按
- if(key==KEY0_PRES)
- {
- if(sd_ok)
- {
- LED1=0; //点亮DS1,提示正在拍照
- camera_new_pathname(pname);//得到文件名
- if(bmp_encode(pname,(lcddev.width-240)/2,(lcddev.height-320)/2,240,320,0))//拍照有误
- {
- Show_Str(40,130,240,12,"写入文件错误!",12,0);
- }else
- {
- Show_Str(40,130,240,12,"拍照成功!",12,0);
- Show_Str(40,150,240,12,"保存为:",12,0);
- Show_Str(40+42,150,240,12,pname,12,0);
- BEEP=1; //蜂鸣器短叫,提示拍照完成
- delay_ms(100);
- }
- }else //提示SD卡错误
- {
- Show_Str(40,130,240,12,"SD卡错误!",12,0);
- Show_Str(40,150,240,12,"拍照功能不可用!",12,0);
- }
- BEEP=0;//关闭蜂鸣器
- LED1=1;//关闭DS1
- delay_ms(1800);//等待1.8秒钟
- LCD_Clear(BLACK);
- }else delay_ms(5);
- camera_refresh();//更新显示
- i++;
- if(i==40)//DS0闪烁.
- {
- i=0;
- LED0=!LED0;
- }
- }
- }
复制代码
所有资料51hei提供下载:
OV7670照相.rar
(1.65 MB, 下载次数: 99)
|