OV5640 设置为 RGB565 模式，并将接收到的数据，传送给 LCD。当使用 MCU
屏的时候，完全由硬件 DMA 传输给 LCD，CPU 不用处理；当使用 RGB 屏的时候，数据先由
DMA 接收到双缓存里面，然后在 DMA 传输完成中断服务函数里面，调用函数：
rgblcd_dcmi_rx_callback，将接收到的数据，用 DMA2D 填充到 RGB LCD，显示到屏幕上。
我做如图处理，并不能执行，标识灯都无反应。这时候我该如何对RGB565数据进行处理？
求大牛指点！万分感谢！
友情提示: 此问题已得到解决，问题已经关闭,关闭后问题禁止继续编辑，回答。
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确实如你说的，Jpeg_Data_ok不会等于1，EasyTrace算法代码如下，网上开源的，能搜到。
#define min3v(v1, v2, v3) ((v1)>(v2)? ((v2)>(v3)?(v3):(v2)):((v1)>(v3)?(v3):(v1)))
#define max3v(v1, v2, v3) ((v1)<(v2)? ((v2)<(v3)?(v3):(v2)):((v1)<(v3)?(v3):(v1)))
typedef struct
{
unsigned char red; // [0,255]
unsigned char green; // [0,255]
unsigned char blue; // [0,255]
}COLOR_RGB;
typedef struct
{
unsigned char hue; // [0,240]
unsigned char saturation; // [0,240]
unsigned char luminance; // [0,240]
}COLOR_HSL;
typedef struct
{
unsigned int X_Start;
unsigned int X_End;
unsigned int Y_Start;
unsigned int Y_End;
}SEARCH_AREA;
extern unsigned short LCD_ReadPoint(unsigned short x,unsigned short y); //唯一需要移植的函数 ，读取RGB格式颜 {MOD}
static void ReadColor(unsigned int x,unsigned int y,COLOR_RGB *Rgb)
{
unsigned short C16;
C16 = LCD_ReadPoint(x,y);
Rgb->red = (unsigned char)((C16&0xf800)>>8);
Rgb->green = (unsigned char)((C16&0x07e0)>>3);
Rgb->blue = (unsigned char)((C16&0x001f)<<3);
}
//RGB×aHSL
static void RGBtoHSL(const COLOR_RGB *Rgb, COLOR_HSL *Hsl)
{
int h,s,l,maxVal,minVal,difVal;
int r = Rgb->red;
int g = Rgb->green;
int b = Rgb->blue;
maxVal = max3v(r, g, b);
minVal = min3v(r, g, b);
difVal = maxVal-minVal;
l = (maxVal+minVal)*240/255/2;
if(maxVal == minVal)//èôr=g=b
{
h = 0;
s = 0;
}
else
{
if(maxVal==r)
{
if(g>=b)
h = 40*(g-b)/(difVal);
else
h = 40*(g-b)/(difVal) + 240;
}
else if(maxVal==g)
h = 40*(b-r)/(difVal) + 80;
else if(maxVal==b)
h = 40*(r-g)/(difVal) + 160;
if(l == 0)
s = 0;
else if(l<=120)
s = (difVal)*240/(maxVal+minVal);
else
s = (difVal)*240/(511 - (maxVal+minVal));
}
Hsl->hue = (unsigned char)(((h>240)? 240 : ((h<0)?0:h)));
Hsl->saturation = (unsigned char)(((s>240)? 240 : ((s<0)?0:s)));
Hsl->luminance = (unsigned char)(((l>240)? 240 : ((l<0)?0:l)));
}
static int ColorMatch(const COLOR_HSL *Hsl,const TARGET_CONDI *Condition)
{
if(
Hsl->hue > Condition->H_MIN &&
Hsl->hue < Condition->H_MAX &&
Hsl->saturation > Condition->S_MIN &&
Hsl->saturation < Condition->S_MAX &&
Hsl->luminance > Condition->L_MIN &&
Hsl->luminance < Condition->L_MAX
) //hueÎaé«μ÷￡¬saturationÎa±￥oí¶è ￡¬luminanceÎaáá¶è
return 1;
else
return 0;
}
static int SearchCentre(unsigned int *x,unsigned int *y,const TARGET_CONDI *Condition,const SEARCH_AREA *Area)
{
unsigned int SpaceX,SpaceY,i,j,k,FailCount=0;
COLOR_RGB Rgb;
COLOR_HSL Hsl;
SpaceX = Condition->WIDTH_MIN/3;
SpaceY = Condition->HIGHT_MIN/3;
for(i=Area->Y_Start;i<Area->Y_End;i+=SpaceY)
{
for(j=Area->X_Start;j<Area->X_End;j+=SpaceX)
{
FailCount=0;
for(k=0;k<SpaceX+SpaceY;k++)
{
if(k<SpaceX)
ReadColor(j+k,i+SpaceY/2,&Rgb);
else
ReadColor(j+SpaceX/2,i+(k-SpaceX),&Rgb);
RGBtoHSL(&Rgb,&Hsl);
if(!ColorMatch(&Hsl,Condition))
FailCount++;
if(FailCount>((SpaceX+SpaceY)>>ALLOW_FAIL_PER))
break;
}
if(k==SpaceX+SpaceY)
{
*x = j+SpaceX/2;
*y = i+SpaceY/2;
return 1;
}
}
}
return 0;
}
static int Corrode(unsigned int oldx,unsigned int oldy,const TARGET_CONDI *Condition,RESULT *Resu)
{
unsigned int Xmin,Xmax,Ymin,Ymax,i,FailCount=0;
COLOR_RGB Rgb;
COLOR_HSL Hsl;
for(i=oldx;i>IMG_X;i--)
{
ReadColor(i,oldy,&Rgb);
RGBtoHSL(&Rgb,&Hsl);
if(!ColorMatch(&Hsl,Condition))
FailCount++;
if(FailCount>(((Condition->WIDTH_MIN+Condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER))
break;
}
Xmin=i;
FailCount=0;
for(i=oldx;i<IMG_X+IMG_W;i++)
{
ReadColor(i,oldy,&Rgb);
RGBtoHSL(&Rgb,&Hsl);
if(!ColorMatch(&Hsl,Condition))
FailCount++;
if(FailCount>(((Condition->WIDTH_MIN+Condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER))
break;
}
Xmax=i;
FailCount=0;
for(i=oldy;i>IMG_Y;i--)
{
ReadColor(oldx,i,&Rgb);
RGBtoHSL(&Rgb,&Hsl);
if(!ColorMatch(&Hsl,Condition))
FailCount++;
if(FailCount>(((Condition->HIGHT_MIN+Condition->HIGHT_MAX)>>2)>>ALLOW_FAIL_PER))
break;
}
Ymin=i;
FailCount=0;
for(i=oldy;i<IMG_Y+IMG_H;i++)
{
ReadColor(oldx,i,&Rgb);
RGBtoHSL(&Rgb,&Hsl);
if(!ColorMatch(&Hsl,Condition))
FailCount++;
if(FailCount>(((Condition->HIGHT_MIN+Condition->HIGHT_MAX)>>2)>>ALLOW_FAIL_PER))
break;
}
Ymax=i;
FailCount=0;
Resu->x = (Xmin+Xmax)/2;
Resu->y = (Ymin+Ymax)/2;
Resu->w = Xmax-Xmin;
Resu->h = Ymax-Ymin;
if(
((Xmax-Xmin)>(Condition->WIDTH_MIN)) && ((Ymax-Ymin)>(Condition->HIGHT_MIN)) &&
((Xmax-Xmin)<(Condition->WIDTH_MAX)) && ((Ymax-Ymin)<(Condition->HIGHT_MAX))
)
return 1;
else
return 0;
}
int Trace(const TARGET_CONDI *Condition,RESULT *Resu)
{
unsigned int i;
static unsigned int x0,y0,flag=0;
static SEARCH_AREA Area={IMG_X,IMG_X+IMG_W,IMG_Y,IMG_Y+IMG_H};
RESULT Result;
if(flag==0)
{
if(SearchCentre(&x0,&y0,Condition,&Area))
flag=1;
else
{
Area.X_Start= IMG_X ;
Area.X_End = IMG_X+IMG_W ;
Area.Y_Start= IMG_Y ;
Area.Y_End = IMG_Y+IMG_H ;
if(SearchCentre(&x0,&y0,Condition,&Area))
{
flag=0;
return 0;
}
}
}
Result.x = x0;
Result.y = y0;
for(i=0;i<ITERATE_NUM;i++)
Corrode(Result.x,Result.y,Condition,&Result);
if(Corrode(Result.x,Result.y,Condition,&Result))
{
x0=Result.x;
y0=Result.y;
Resu->x=Result.x;
Resu->y=Result.y;
Resu->w=Result.w;
Resu->h=Result.h;
flag=1;
Area.X_Start= Result.x - ((Result.w)>>1);
Area.X_End = Result.x + ((Result.w)>>1);
Area.Y_Start= Result.y - ((Result.h)>>1);
Area.Y_End = Result.y + ((Result.h)>>1);
return 1;
}
else
{
flag=0;
return 0;
}
}
粗略看了下代码，暂时不好直接放到程序上，容易乱码。这个应该是RGB转HSL再加以区分颜 {MOD}识别的，从你的颜 {MOD}获取函数里看出直接使用的原子屏幕。原子屏幕使用的是RGB屏，虽然HSL有很大优势，但是从RGB转换到HSL过程中会有误差，所以不建议使用HSL进行识别。直接用源 {MOD}RGB方式识别就好了。如果有更好的思路请分享。
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