本实验开机后，先初始化摄像头模块（OV7670），如果初始化成功，则在LCD模块上面显示摄像头模块所
拍摄到的内容。我们可以通过KEY0设置光照模式（5种模式）、通过KEY1设置色饱和度，通过KEY_UP设置
对比度，通过TPAD设置特效（总共7种特效）。通过串口，我们可以查看当前的帧率（这里是指LCD显示的
帧率，而不是指OV7670的输出帧率），同时可以借助USMART设置OV7670的寄存器，方便大家调试。DS0指
示程序运行状态。另外,本实验可以借助USMART调试,调用SCCB_RD_Reg和SCCB_WR_Reg等函数,实现OV7670
寄存器读写.
单片机源程序如下:
- #include "led.h"
- #include "delay.h"
- #include "key.h"
- #include "sys.h"
- #include "lcd.h"
- #include "usart.h"
- #include "string.h"
- #include "ov7670.h"
- #include "tpad.h"
- #include "timer.h"
- #include "exti.h"
- #include "usmart.h"
- #include "EasyTracered.h"
-
- /************************************************
- 摄像头OV7670 实验
- ************************************************/
- const u8*LMODE_TBL[5]={"Auto","Sunny","Cloudy","Office","Home"}; //5种光照模式
- const u8*EFFECTS_TBL[7]={"Normal","Negative","B&W","Redish","Greenish","Bluish","Antique"}; //7种特效
- extern u8 ov_sta; //在exit.c里 面定义
- extern u8 ov_frame; //在timer.c里面定义
- u16 r,y;
- u16 s,z;
- //更新LCD显示
- void camera_refresh(void)
- {
-
- RESULT Resured;//判定为的目标条件
- TARGET_CONDI Conditionred={215,240,20,240,30,160,30,30,320,240}; //红色1 API参数 hsl的阈值，识别时用的
- 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;
- }
- if(Trace(&Conditionred,&Resured) ) //API
- {
- LCD_Fillred(Resured.x-Resured.w/2,Resured.y-Resured.h/2,Resured.x+Resured.w/2,Resured.y-Resured.h/2+1,0xf800);//u16 x,u16 y,u16 width,u16 hight,u16 Color
- LCD_Fillred(Resured.x-Resured.w/2,Resured.y-Resured.h/2,Resured.x-Resured.w/2+1,Resured.y+Resured.h/2,0xf800);
- LCD_Fillred(Resured.x-Resured.w/2,Resured.y+Resured.h/2,Resured.x+Resured.w/2,Resured.y+Resured.h/2+1,0xf800);
- LCD_Fillred(Resured.x+Resured.w/2,Resured.y-Resured.h/2,Resured.x+Resured.w/2+1,Resured.y+Resured.h/2,0xf800);
- LCD_Fillred(Resured.x-2,Resured.y-2,Resured.x+2,Resured.y+2,0xf800);
-
- //LED1=!LED1;
- r=Resured.x;
- y=Resured.y;
- }
- printf("%d %d\t ",r,y);
- 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
- }
- }
- int main(void)
- {
-
- u8 lightmode=0,saturation=2,contrast=2;
- u8 effect=0;
- u8 i=0;
- u8 msgbuf[15]; //消息缓存区
- u8 tm=0;
- 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(76800); //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
- TPAD_Init(6); //触摸按键初始化
- POINT_COLOR=RED; //设置字体为红色
- LCD_ShowString(30,50,200,16,16,"ELITE STM32F103 ^_^");
- LCD_ShowString(30,210,200,16,16,"OV7670 Init...");
- while(OV7670_Init())//初始化OV7670
- {
- LCD_ShowString(30,210,200,16,16,"OV7670 Error!!");
- delay_ms(200);
- LCD_Fill(30,210,239,246,WHITE);
- delay_ms(200);
- }
- LCD_ShowString(30,210,200,16,16,"OV7670 Init OK");
- delay_ms(1500);
- OV7670_Light_Mode(lightmode);
- OV7670_Color_Saturation(saturation);
- OV7670_Contrast(contrast);
- OV7670_Special_Effects(effect);
-
- 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)
- {
-
- camera_refresh();//更新显示
- if(tm)
- {
- LCD_ShowString((lcddev.width-240)/2+30,(lcddev.height-320)/2+60,200,16,16,msgbuf);
- tm--;
- }
- i++;
- if(i==15)//DS0闪烁.
- {
- i=0;
- LED0=!LED0;
- }
- }
- }
所有资料51hei提供下载:
识别红色锁定并串口传回坐标.rar
(393.5 KB, 下载次数: 81)
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