STM32F10控制OV7275摄像头源程序

ID:51217 · 发表于 2020-6-20 14:14

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "string.h"
#include "ov7725.h"
#include "tpad.h"
#include "timer.h"
#include "exti.h"
#include "usmart.h"

//由于OV7725传感器安装方式原因,OV7725_WINDOW_WIDTH相当于LCD的高度，OV7725_WINDOW_HEIGHT相当于LCD的宽度
//注意：此宏定义只对OV7725有效
#define  OV7725_WINDOW_WIDTH             320       // <=320
#define  OV7725_WINDOW_HEIGHT             240       // <=240

const u8*LMODE_TBL[6]={"Auto","Sunny","Cloudy","Office","Home","Night"};//6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

//更新LCD显示(OV7725)
void OV7725_camera_refresh(void)
{
      u32 i,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
            LCD_Set_Window((lcddev.width-OV7725_WINDOW_WIDTH)/2,(lcddev.height-OV7725_WINDOW_HEIGHT)/2,OV7725_WINDOW_WIDTH,OV7725_WINDOW_HEIGHT);//将显示区域设置到屏幕中央
            if(lcddev.id==0X1963)
                     LCD_Set_Window((lcddev.width-OV7725_WINDOW_WIDTH)/2,(lcddev.height-OV7725_WINDOW_HEIGHT)/2,OV7725_WINDOW_HEIGHT,OV7725_WINDOW_WIDTH);//将显示区域设置到屏幕中央
            LCD_WriteRAM_Prepare();    //开始写入GRAM
            OV7725_RRST=0;                               //开始复位读指针
            OV7725_RCK_L;
            OV7725_RCK_H;
            OV7725_RCK_L;
            OV7725_RRST=1;                               //复位读指针结束
            OV7725_RCK_H;
            for(i=0;i<OV7725_WINDOW_HEIGHT;i++)
            {
                     for(j=0;j<OV7725_WINDOW_WIDTH;j++)
                     {
                              OV7725_RCK_L;
                              color=GPIOC->IDR&0XFF;       //读数据
                              OV7725_RCK_H;
                              color<<=8;
                              OV7725_RCK_L;
                              color|=GPIOC->IDR&0XFF;       //读数据
                              OV7725_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
      }
}

int main(void)
{
      u8 key;
      u8 i=0;
      u8 msgbuf[15];//消息缓存区
      u8 tm=0;
      u8 lightmode=0,effect=0;
      s8 saturation=0,brightness=0,contrast=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(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
      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,"WarShip STM32");
      LCD_ShowString(30,70,200,16,16,"OV7725 TEST");
      LCD_ShowString(30,90,200,16,16,"ATOM@ALIENTEK");
      LCD_ShowString(30,110,200,16,16,"2019/10/16");
      LCD_ShowString(30,130,200,16,16,"KEY0:Light Mode");
      LCD_ShowString(30,150,200,16,16,"KEY1:Saturation");
      LCD_ShowString(30,170,200,16,16,"KEY2:Brightness");
      LCD_ShowString(30,190,200,16,16,"KEY_UP:Contrast");
      LCD_ShowString(30,210,200,16,16,"TPAD:Effects");
      LCD_ShowString(30,230,200,16,16,"OV7725 Init...");
      while(1)//初始化OV7725
      {
            if(OV7725_Init()==0)
            {
                     LCD_ShowString(30,210,200,16,16,"OV7725 Init OK    ");
                     while(1)
                     {
                              key=KEY_Scan(0);
                              if(key==KEY0_PRES)
                              {
                                    OV7725_Window_Set(OV7725_WINDOW_WIDTH,OV7725_WINDOW_HEIGHT,0);//QVGA模式输出
                                    break;
                              }else if(key==KEY1_PRES)
                              {
                                    OV7725_Window_Set(OV7725_WINDOW_WIDTH,OV7725_WINDOW_HEIGHT,1);//VGA模式输出
                                    break;
                              }
                              i++;
                              if(i==100)LCD_ShowString(30,230,210,16,16,"KEY0:QVGA  KEY1:VGA"); //闪烁显示提示信息
                              if(i==200)
                              {
                                    LCD_Fill(30,230,210,250+16,WHITE);
                                    i=0;
                              }
                              delay_ms(5);
                     }
                     OV7725_Light_Mode(lightmode);
                     OV7725_Color_Saturation(saturation);
                     OV7725_Brightness(brightness);
                     OV7725_Contrast(contrast);
                     OV7725_Special_Effects(effect);
                     OV7725_CS=0;
                     break;
            }else
            {
                     LCD_ShowString(30,210,200,16,16,"OV7725 Error!!");
                     delay_ms(200);
                     LCD_Fill(30,210,239,246,WHITE);
                     delay_ms(200);
            }
      }

      TIM6_Int_Init(10000,7199);                      //10Khz计数频率,1秒钟中断
      EXTI8_Init();                                           //使能外部中断8,捕获帧中断
      LCD_Clear(BLACK);
      while(1)
      {
            key=KEY_Scan(0);//不支持连按
            if(key)
            {
                     tm=20;
                     switch(key)
                     {
                              case KEY0_PRES:       //灯光模式Light Mode
                                    lightmode++;
                                    if(lightmode>5)lightmode=0;
                                    OV7725_Light_Mode(lightmode);
                                    sprintf((char*)msgbuf,"%s",LMODE_TBL[lightmode]);
                                    break;
                              case KEY1_PRES:       //饱和度Saturation
                                    saturation++;
                                    if(saturation>4)saturation=-4;
                                    else if(saturation<-4)saturation=4;
                                    OV7725_Color_Saturation(saturation);
                                    sprintf((char*)msgbuf,"Saturation:%d",saturation);
                                    break;
                              case WKUP_PRES:       //对比度Contrast
                                    contrast++;
                                    if(contrast>4)contrast=-4;
                                    else if(contrast<-4)contrast=4;
                                    OV7725_Contrast(contrast);
                                    sprintf((char*)msgbuf,"Contrast:%d",contrast);
                                    break;
                     }
            }
            if(TPAD_Scan(0))//检测到触摸按键
            {
                     effect++;
                     if(effect>6)effect=0;
                     OV7725_Special_Effects(effect);             //设置特效
                     sprintf((char*)msgbuf,"%s",EFFECTS_TBL[effect]);
                     tm=20;
            }
            OV7725_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;
               }
      }
}

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