ov7640摄像头处理(彩色,灰度,任意窗口)源码 -

#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"
//ALIENTEK战舰STM32开发板实验36
//摄像头实验
extern u8 ov_sta; //在exit.c里面定义
extern u8 ov_frame; //在timer.c里面定义
extern u8 data_ready;
u16 color_r;
u16 color_g;
u16 color_b;
//设置CPU的频率
void ov7670_clock_set(u8 PLL)
{
u8 temp=0;
RCC->CFGR&=0XFFFFFFFC;
RCC->CR&=~0x01000000;
RCC->CFGR&=~(0XF<<18);
PLL-=2;//抵消2个单位
RCC->CFGR|=PLL<<18;
RCC->CFGR|=1<<16; //PLLSRC ON
FLASH->ACR|=0x12;
RCC->CR|=0x01000000; //PLLON
while(!(RCC->CR>>25));
RCC->CFGR|=0x02;
while(temp!=0x02)
{
temp=RCC->CFGR>>2;
temp&=0x03;
}
}
//更新LCD显示
void camera_refresh()
{
u32 i,j;
u16 color;
if(ov_sta==2)
{
LCD_Scan_Dir(U2D_L2R); //从上到下,从左到右
LCD_SetCursor(0x00,0x0000); //设置光标位置
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;
if(ov7670_config.mode){
for(i=0; i<ov7670_config.height; i++)
{
// LCD_SetCursor(i+ov7670_config.xsta,ov7670_config.ysta); //设置光标位置
// LCD_WriteRAM_Prepare(); //开始写入GRAM
for(j=0; j<ov7670_config.width; j++)
{
OV7670_RCK_L;
color = GPIOC->IDR&0XFF; //读数据
OV7670_RCK_H;
color<<=8;
OV7670_RCK_L;//因为设置的是 YUYV输出，第二个字节没用，不需要读
// color |= GPIOC->IDR&0XFF; //
OV7670_RCK_H;
color_r = color&0xf800;
color_b = color>>11;
color >>=5;
color_g =color&0x07e0;
LCD->LCD_RAM= color_r + color_g + color_b;
}
}
}else{
for(i=0; i<ov7670_config.height; i++)
{
// LCD_SetCursor(i+ov7670_config.xsta,ov7670_config.ysta); //设置光标位置
// LCD_WriteRAM_Prepare(); //开始写入GRAM
for(j=0; j<ov7670_config.width; 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;
}
}
}
EXTI_ClearITPendingBit(EXTI_Line8); //清除LINE8上的中断标志位
ov_sta=0; //开始下一次采集
ov_frame++;
LCD_Scan_Dir(DFT_SCAN_DIR); //恢复默认扫描方向
}
}
int main(void)
{
delay_init(); //延时函数初始化
NVIC_Configuration(); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
uart_init(9600); //串口初始化为9600
LED_Init(); //LED端口初始化
LCD_Init();
KEY_Init();
TPAD_Init(72); //触摸按键初始化
usmart_dev.init(72); //初始化USMART
POINT_COLOR=RED;//设置字体为红色
LCD_ShowString(60,50,200,16,16,"WarShip STM32");
LCD_ShowString(60,70,200,16,16,"OV7670 TEST");
LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
LCD_ShowString(60,110,200,16,16,"2012/9/14");
LCD_ShowString(60,130,200,16,16,"OV7670 Init...");
while(OV7670_Init())//初始化OV7670
{
LCD_ShowString(60,130,200,16,16,"OV7670 Error!!");
delay_ms(200);
LCD_Fill(60,130,239,246,WHITE);
delay_ms(200);
}
LCD_ShowString(60,130,200,16,16,"OV7670 Init OK");
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_CS=0;
config_ov7670_OutPut(20,60,320,240,1);
while(1)
{
camera_refresh();//更新显示
}
}

复制代码