STM32F驱动ov7670摄像头源码 -

#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"
/************************************************
ALIENTEK战舰STM32开发板实验42
照相机实验
************************************************/
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.
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