osd.c

用51单片机实现的在屏幕上显视文字,外接一颗MT230OSDIC

#include "golbal.h"

BYTE data CursorX;
BYTE data CursorY;

BYTE code HexTab[16]={_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_a,_b,_c,_d,_e,_f};
BYTE code NullRow[31]={__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,__,DataEnd};

enum window
{
  window1=1,
  window2,
  window3,
  window4
};

void gotoxy(BYTE x, BYTE y)
{
  CursorX=x;
  CursorY=y;
}

void SetOSDAttribute(BYTE color)
{
  byM230_OSDRA=CursorY|OSD_ATTRIBUTE;
  byM230_OSDCA=CursorX;
  byM230_OSDDT0=color;  
 }

void SetOSDDisplay(BYTE font, bit page2)
{
  byM230_OSDRA=CursorY|OSD_DISPLAY;
  byM230_OSDCA=CursorX;
  
  if(page2)
     {
       byM230_OSDDT1=font;
      }
  else
     {
       byM230_OSDDT0=font;
      }
}

void PrintChar(BYTE FontCode, BYTE Color, bit Page2)
{
  SetOSDDisplay(FontCode,Page2);
  SetOSDAttribute(Color);

  CursorX++;

  if(CursorX>29)
  	{
	  CursorX=0;
	  CursorY++;
  	}

  if(CursorY>14)
  	{
  	  CursorY=0;
  	}
}

void PrintString(BYTE *string, BYTE color)
{
  while((*string)!=DataEnd)
  {
    if((*string)==SecondPage)
    	{
	  string++;
	  PrintChar(*string, color, 1);
	}
    else
    	{
	  PrintChar(*string, color, 0);
	 }
	
	string++;
  }
}

void PrintDec(BYTE value, BYTE color)
{
  BYTE data buf[3];

  buf[2]=value/0x64;
  buf[1]=(value%0x64)/0x0a;
  buf[0]=(value%0x64)%0x0a;

  if(buf[2]==0x00)
  	{
	  PrintChar(__,color,0);
  	 }
  else
  	{
	  PrintChar(HexTab[buf[2]], color, 0);
  	 }
  
  PrintChar(HexTab[buf[1]], color, 0);
  PrintChar(HexTab[buf[0]], color, 0);
}

void PrintHex(BYTE value, BYTE color)
{
  PrintChar(HexTab[value/16], color, 0);
  PrintChar(HexTab[value%16], color, 0);
}

#define	GAUGE_DEGREE	5
#define	GAUGE_LENGTH	16
#define	MAX_GAUGE		(GAUGE_DEGREE*GAUGE_LENGTH)


void PrintBar(BYTE value, BYTE color)
{
  BYTE data full,i;
   
   BYTE code NFULL_CODE[GAUGE_DEGREE]=
   {
      _BAR_EMP,_BAR_1, _BAR_2, _BAR_3,_BAR_F
   };

   value=MAX_GAUGE*value/(MaxValue-MinValue);
   full=value/GAUGE_DEGREE;

   if( (value==0) && (full==0) )
   {
      for(i=0;i<GAUGE_LENGTH;i++)
      {
         PrintChar(_BAR_EMP, color, 0);
      }
      //PrintChar(_BAR_END,color, 0);
      return;
   }

  for(i=0;i<GAUGE_LENGTH;i++)
   {
      if(i<full)
      {
         PrintChar(_BAR_F,color, 0);
      }
      else if(i==full)
      {
         PrintChar(NFULL_CODE[value%GAUGE_DEGREE],color, 0);
      }
      else
      {
         PrintChar(_BAR_EMP,color, 0);
      }
      
   }
   //PrintChar(_BAR_END,color, 0);   
}

void PrintOneBar(BYTE Cstart, BYTE Rstart, BYTE color)
{
  BYTE data data_value; 
  BYTE data bar_value;

  bar_value=WorkValue;
  data_value=(bar_value-MinValue)*100/(MaxValue-MinValue);

  gotoxy(19,7);
  
  PrintDec(data_value, color);

  gotoxy(Cstart,Rstart);		       
  //PrintChar(_BAR_S,color,0);
  PrintBar(bar_value, color);
}

void InitialOSD(void)
{
  BYTE data i;
  
  CloseOSD();
  //ClearOSD();
  
  byM230_RSPACE=0x00;
  //byM230_HORD=OSDHPos;
  //byM230_VERTD=OSDVPos;
  byM230_CH=0x00;
  byM230_CHSC=0x00;
  byM230_FSSTP=0x00;
  byM230_WINSW=0x00;
  byM230_WINSH=0x00;

   for(i=0;i<4;i++)
   	{
         CloseOSDWindow(i);  
   	}

   for(i=0;i<=14;i++)
   	{
	  byM230_OSDRA=i;
	  byM230_OSDCA=30;
	  byM230_OSDDT0=0x00;
   	}
}

void OpenOSD(void)
{
  byM230_OSDCON=OSD_ENABLE;
}

void CloseOSD(void)
{
	byM230_OSDCON=WEN_Clr+RAM_Clr;
	DelayX1ms(1);
	byM230_OSDCON=0x00;
}

void CloseOSDWindow(BYTE WinNo)
{
  switch(WinNo)
     {
	case window1:
	  	byM230_W1COL1=0x00;
		break;
		
	case window2:
	  	byM230_W2COL1=0x00;
		break;
		
	case window3:
	  	byM230_W3COL1=0x00;
		break;
		
	case window4:
	  	byM230_W4COL1=0x00;
		break;
		
	default:
		break;
        }
}

void ClearRow(BYTE row, BYTE color)
{
  gotoxy(CursorX,row);
  PrintString(NullRow, color);
}

void SetWindow(BYTE CStart,BYTE CEnd,BYTE RStart,BYTE REnd,BYTE Color,BYTE WinNum)
{
  switch(WinNum)
  	{
	  case window1:
	  	byM230_W1ROW=(RStart<<4)|REnd;
			byM230_W1COL1=((CStart<<3)|WEN_En)&0xfe;
			byM230_W1COL2=(CEnd<<3)|(Color&0x07);
			break;
		
	case window2:
	  	byM230_W2ROW=(RStart<<4)|REnd;
			byM230_W2COL1=((CStart<<3)|WEN_En)&0xfe;
			byM230_W2COL2=(CEnd<<3)|(Color&0x07);
			break;
		
	case window3:
	  	byM230_W3ROW=(RStart<<4)|REnd;
			byM230_W3COL1=((CStart<<3)|WEN_En)&0xfe;
			byM230_W3COL2=(CEnd<<3)|(Color&0x07);
			break;
		
	case window4:
	  	byM230_W4ROW=(RStart<<4)|REnd;
			byM230_W4COL1=((CStart<<3)|WEN_En)&0xfe;
			byM230_W4COL2=(CEnd<<3)|(Color&0x07);
			break;
		
	default:
			break;
  	 }
}