利用STM32控制ov2640软件二值化源码 -

#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "led.h"
#include "key.h"
#include "fing.h"
#include "lcd.h"
#include "usmart.h"
#include "usart2.h"
#include "timer.h"
#include "ov2640.h"
#include "dcmi.h"
u8 ov2640_mode=0; //工作模式:0,RGB565模式;1,JPEG模式
u8 x=174,wide=51,mode=0,stop=1;
u8 tempdrum[4][201];
u8 delaytime=50,time=0;
#define jpeg_buf_size 31*1024 //定义JPEG数据缓存jpeg_buf的大小(*4字节)
__align(4) u32 jpeg_buf[jpeg_buf_size]; //JPEG数据缓存buf
volatile u32 jpeg_data_len=0; //buf中的JPEG有效数据长度
volatile u8 jpeg_data_ok=0; //JPEG数据采集完成标志
//0,数据没有采集完;
//1,数据采集完了,但是还没处理;
//2,数据已经处理完成了,可以开始下一帧接收
void jpeg_data_process(void)
{
if(ov2640_mode)//只有在JPEG格式下,才需要做处理.
{
if(jpeg_data_ok==0) //jpeg数据还未采集完?
{
DMA_Cmd(DMA2_Stream1, DISABLE);//停止当前传输
while (DMA_GetCmdStatus(DMA2_Stream1) != DISABLE){}//等待DMA2_Stream1可配置
jpeg_data_len=jpeg_buf_size-DMA_GetCurrDataCounter(DMA2_Stream1);//得到此次数据传输的长度
jpeg_data_ok=1; //标记JPEG数据采集完按成,等待其他函数处理
}
if(jpeg_data_ok==2) //上一次的jpeg数据已经被处理了
{
DMA2_Stream1->NDTR=jpeg_buf_size;
DMA_SetCurrDataCounter(DMA2_Stream1,jpeg_buf_size);//传输长度为jpeg_buf_size*4字节
DMA_Cmd(DMA2_Stream1, ENABLE); //重新传输
jpeg_data_ok=0; //标记数据未采集
}
}
}
void KeyMode()
{
u8 msgbuf2[20];
DCMI_Stop(); //停止显示
if(WK_UP==1)
{
mode+=1;
if(mode==3)
{
mode=0;
sprintf((char*)msgbuf2,"x=%d w=%d",x,wide);//g
LCD_ShowString(200,200,100,16,16,msgbuf2);//显示提示内容
}
sprintf((char*)msgbuf2,"mode=%d",mode);//g
LCD_ShowString(200,220,100,16,16,msgbuf2);//显示提示内容
while(WK_UP==1);
}
if(mode==1)
{
if(KEY0==0)
{
x+=1;
sprintf((char*)msgbuf2," x=%d ",x);//g
LCD_ShowString(200,200,100,16,16,msgbuf2);//显示提示内容
while(KEY0==0);
}
if(KEY2==0)
{
x-=1;
sprintf((char*)msgbuf2," x=%d ",x);//g
LCD_ShowString(200,200,100,16,16,msgbuf2);//显示提示内容
while(KEY2==0);
}
}
if(mode==2)
{
if(KEY0==0)
{
wide+=1;
sprintf((char*)msgbuf2," w=%d ",wide);//g
LCD_ShowString(200,200,100,16,16,msgbuf2);//显示提示内容
while(KEY0==0);
}
if(KEY2==0)
{
wide-=1;
sprintf((char*)msgbuf2," w=%d ",wide);//g
LCD_ShowString(200,200,100,16,16,msgbuf2);//显示提示内容
while(KEY0==0);
}
}
if(mode==0)
{
if(KEY0==0)
{
delaytime+=1;
sprintf((char*)msgbuf2," w=%d ",delaytime);//g
LCD_ShowString(200,220,100,16,16,msgbuf2);//显示提示内容
while(KEY0==0);
}
if(KEY2==0)
{
delaytime-=1;
sprintf((char*)msgbuf2," w=%d ",delaytime);//g
LCD_ShowString(200,220,100,16,16,msgbuf2);//显示提示内容
while(KEY0==0);
}
}
DCMI_Start();
}
void getcolor(tx,ty,num)
{
u8 msgbuf1[15]; //消息缓存区
u16 tempcolor;
DCMI_Stop(); //停止显示
tempcolor=LCD_ReadPoint(tx,ty);
sprintf((char*)msgbuf1,"%d",(int) ((tempcolor>>5&0x3f) * 255.0 / 63.0 + 0.5));//g
LCD_ShowString(tx-8,ty+24,210,16,16,msgbuf1);//显示提示内容
if((int) ((tempcolor>>5&0x3f) * 255.0 / 63.0 + 0.5)>30) //软件二值化
{
LCD_Fill((num-1)*120+1,150-20,num*120-1,150+20,WHITE);
tempdrum[num-1][time]=1;
}
else
{
LCD_Fill((num-1)*120+1,150-20,num*120-1,150+20,BLACK);
tempdrum[num-1][time]=0;
}
LCD_DrawRectangle(tx-1,ty-1, tx+1, ty+1);
LCD_DrawLine(tx, ty-2, tx, ty-7);
LCD_DrawLine(tx-2, ty, tx-7, ty);
LCD_DrawLine(tx+2, ty, tx+7, ty);
//
// while(KEY_Scan(0))
// KeyMode();
DCMI_Start();
//低字节的前5位用来表示B(BLUE)
//低字节的后三位+高字节的前三位用来表示G(Green)
//高字节的后5位用来表示R(RED)
// R8 = (int) floor( R5 * 255.0 / 31.0 + 0.5);
// G8 = (int) floor( G6 * 255.0 / 63.0 + 0.5);
// B8 = (int) floor( R5 * 255.0 / 31.0 + 0.5);
// R8 = (int) floor( (tempcolor>>11) * 255.0 / 31.0 + 0.5);
// G8 = (int) floor((tempcolor>>5&0x3f) * 255.0 / 63.0 + 0.5);
// B8 = (int) floor( (tempcolor&0x1f) * 255.0 / 31.0 + 0.5);
// delay_ms(1);
}
//RGB565测试
//RGB数据直接显示在LCD上面
void fing()
{
u16 temptime;
if (time<delaytime)temptime=time+201-delaytime;
else temptime=time-delaytime;
if(tempdrum[0][temptime]==1)GPIO_SetBits(GPIOG,GPIO_Pin_2);
else GPIO_ResetBits(GPIOG,GPIO_Pin_2);
if(tempdrum[1][temptime]==1)GPIO_SetBits(GPIOG,GPIO_Pin_4);
else GPIO_ResetBits(GPIOG,GPIO_Pin_4);
if(tempdrum[2][temptime]==1)GPIO_SetBits(GPIOG,GPIO_Pin_6);
else GPIO_ResetBits(GPIOG,GPIO_Pin_6);
if(tempdrum[3][temptime]==1)GPIO_SetBits(GPIOG,GPIO_Pin_8);
else GPIO_ResetBits(GPIOG,GPIO_Pin_8);
}
void rgb565_test()
{
u8 effect=0,saturation=2,contrast=2;
u8 scale=1; //默认是全尺寸缩放
u8 msgbuf[15]; //消息缓存区
// u8 msgbuf2[15]; //消息缓存区
u16 tempx;
LCD_Clear(BLACK);
POINT_COLOR=RED;
OV2640_RGB565_Mode(); //RGB565模式
My_DCMI_Init(); //DCMI配置
//OV2640_Window_Set(0,0,lcddev.width,lcddev.height/4);
DCMI_DMA_Init((u32)&LCD->LCD_RAM,1,DMA_MemoryDataSize_HalfWord,DMA_MemoryInc_Disable);//DCMI DMA配置
OV2640_ImageWin_Set((800-lcddev.width)/2,(800-lcddev.height/4)/2,lcddev.width,lcddev.height/8);//1:1真实尺寸
OV2640_OutSize_Set(480,lcddev.height/8);
delay_ms(800);
DCMI_Start(); //启动传输
while(1)
{
tempx=x;
getcolor(tempx,20,1);
tempx+=wide;
getcolor(tempx,20,2);
tempx+=wide;
getcolor(tempx,20,3);
tempx+=wide;
getcolor(tempx,20,4);
fing();
time++;
if(time>200)time=0;
if(KEY_Scan(0))
KeyMode();
}
}
int main(void)
{
u8 key;
u8 t;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置系统中断优先级分组2
delay_init(168); //初始化延时函数
uart_init(115200); //初始化串口波特率为115200
usart2_init(42,115200); //初始化串口2波特率为115200
LED_Init(); //初始化LED
LCD_Init(); //LCD初始化
KEY_Init(); //按键初始化
FINE_Init();
TIM3_Int_Init(10000-1,8400-1);//10Khz计数,1秒钟中断一次
usmart_dev.init(84); //初始化USMART
POINT_COLOR=RED;//设置字体为红色
while(OV2640_Init())//初始化OV2640
{
LCD_ShowString(30,130,240,16,16,"OV2640 ERR");
delay_ms(200);
LCD_Fill(30,130,239,170,WHITE);
delay_ms(200);
}
LCD_ShowString(30,130,200,16,16,"OV2640 OK");
while(1)
{
rgb565_test();
}
}

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