drv_glcd.c

lpc2478+ucosII+ucgui源码

    LCD_CTRL_bit.LcdPwr= 1;   // enable power
  }
  else
  {
    LCD_CTRL_bit.LcdPwr= 0;   // disable power
    for(volatile Int32U i = C_GLCD_PWR_ENA_DIS_DLY; i; i--);
    LCD_CTRL_bit.LcdEn = 0;
  }
}

/*************************************************************************
 * Function Name: GLCD_SetFont
 * Parameters: pFontType_t pFont, LdcPixel_t Color
 *              LdcPixel_t BackgndColor
 *
 * Return: none
 *
 * Description: Set current font, font color and background color
 *
 *************************************************************************/
void GLCD_SetFont(pFontType_t pFont, LdcPixel_t Color, LdcPixel_t BackgndColor)
{
  pCurrFont = pFont;
  TextColour = Color;
  TextBackgndColour = BackgndColor;
}

/*************************************************************************
 * Function Name: GLCD_SetWindow
 * Parameters: Int32U X_Left, Int32U Y_Up,
 *             Int32U X_Right, Int32U Y_Down
 *
 * Return: none
 *
 * Description: Set draw window XY coordinate in pixels
 *
 *************************************************************************/
void GLCD_SetWindow(Int32U X_Left, Int32U Y_Up,
                    Int32U X_Right, Int32U Y_Down)
{
  assert(X_Right < C_GLCD_H_SIZE);
  assert(Y_Down < C_GLCD_V_SIZE);
  assert(X_Left < X_Right);
  assert(Y_Up < Y_Down);
  XL_Win = X_Left;
  YU_Win = Y_Up;
  XR_Win = X_Right;
  YD_Win = Y_Down;
}



/*************************************************************************
 * Function Name: GLCD_TextSetPos
 * Parameters: Int32U X_UpLeft, Int32U Y_UpLeft,
 *             Int32U X_DownLeft, Int32U Y_DownLeft
 *
 * Return: none
 *
 * Description: Set text X,Y coordinate in characters
 *
 *************************************************************************/
void GLCD_TextSetPos(Int32U X, Int32U Y)
{
  TextX_Pos = X;
  TextY_Pos = Y;
}

/*************************************************************************
 * Function Name: GLCD_TextSetTabSize
 * Parameters: Int32U Size
 *
 * Return: none
 *
 * Description: Set text tab size in characters
 *
 *************************************************************************/
void GLCD_TextSetTabSize(Int32U Size)
{
  TabSize = Size;
}

/*************************************************************************
 * Function Name: LCD_SET_WINDOW
 * Parameters: int c
 *
 * Return: none
 *
 * Description: Put char function
 *
 *************************************************************************/
static
void LCD_SET_WINDOW (Int32U X_Left, Int32U X_Right,
                     Int32U Y_Up, Int32U Y_Down)
{
  pPix = pWind = ((pInt32U)0xA0000000) + X_Left + (Y_Up*C_GLCD_H_SIZE);
  WindX_Size = X_Right - X_Left;
  WindY_Size = Y_Down - Y_Up;
  CurrX_Size = CurrY_Size = 0;
}

/*************************************************************************
 * Function Name: LCD_SET_WINDOW
 * Parameters: int c
 *
 * Return: none
 *
 * Description: Put char function
 *
 *************************************************************************/
static
void LCD_WRITE_PIXEL (Int32U Pixel)
{
  *pPix++ = Pixel;
  if (++CurrX_Size > WindX_Size)
  {
    CurrX_Size = 0;
    if(++CurrY_Size > WindY_Size)
    {
      CurrY_Size = 0;
    }
    pPix = pWind + CurrY_Size * C_GLCD_H_SIZE;
  }
}

/*************************************************************************
 * Function Name: GLCD_TextCalcWindow
 * Parameters: pInt32U pXL, pInt32U pXR,
 *             pInt32U pYU, pInt32U pYD,
 *             pInt32U pH_Size, pInt32U pV_Size
 *
 * Return: Boolean
 *          FALSE - out of window coordinate aren't valid
 *          TRUE  - the returned coordinate are valid
 *
 * Description: Calculate character window
 *
 *************************************************************************/
static
Boolean GLCD_TextCalcWindow (pInt32U pXL, pInt32U pXR,
                             pInt32U pYU, pInt32U pYD,
                             pInt32U pH_Size, pInt32U pV_Size)
{
  *pH_Size = pCurrFont->H_Size;
  *pV_Size = pCurrFont->V_Size;
  *pXL = XL_Win + (TextX_Pos*pCurrFont->H_Size);
  if(*pXL > XR_Win)
  {
    return(FALSE);
  }
  *pYU = YU_Win + (TextY_Pos*pCurrFont->V_Size);
  if(*pYU > YD_Win)
  {
    return(FALSE);
  }

  *pXR   = XL_Win + ((TextX_Pos+1)*pCurrFont->H_Size) - 1;
  if(*pXR > XR_Win)
  {
  	*pH_Size -= *pXR - XR_Win;
    *pXR = XR_Win;
  }

  *pYD = YU_Win + ((TextY_Pos+1)*pCurrFont->V_Size) - 1;
  if(*pYD > YD_Win)
  {
    *pV_Size -= *pYD - YD_Win;
    *pYD = YD_Win;
  }

  return(TRUE);
}

/*************************************************************************
 * Function Name: putchar
 * Parameters: int c
 *
 * Return: none
 *
 * Description: Put char function
 *
 *************************************************************************/
int putchar (int c)
{
pInt8U pSrc;
Int32U H_Line;
Int32U xl,xr,yu,yd,Temp,V_Size, H_Size, SrcInc = 1;
Int32U WhiteSpaceNumb;
  if(pCurrFont == NULL)
  {
    return(EOF);
  }
  H_Line = (pCurrFont->H_Size / 8) + ((pCurrFont->H_Size % 8)?1:0);
  switch(c)
  {
  case '\n':  // go to begin of next line (NewLine)
    ++TextY_Pos;
    break;
  case '\r':  // go to begin of this line (Carriage Return)
  	// clear from current position to end of line
  	while(GLCD_TextCalcWindow(&xl,&xr,&yu,&yd,&H_Size,&V_Size))
  	{
      LCD_SET_WINDOW(xl,xr,yu,yd);
	    for(Int32U i = 0; i < V_Size; ++i)
	    {
	      for(Int32U j = 0; j < H_Size; ++j)
	      {
	        LCD_WRITE_PIXEL(TextBackgndColour);
	      }
	    }
  		++TextX_Pos;
  	}
    TextX_Pos = 0;
    break;
  case '\b': // go back one position (BackSpace)
    if(TextX_Pos)
    {
      --TextX_Pos;
      // del current position
	  	if(GLCD_TextCalcWindow(&xl,&xr,&yu,&yd,&H_Size,&V_Size))
	  	{
        LCD_SET_WINDOW(xl,xr,yu,yd);
		    for(Int32U i = 0; i < V_Size; ++i)
		    {
		      for(Int32U j = 0; j < H_Size; ++j)
		      {
		        LCD_WRITE_PIXEL(TextBackgndColour);
		      }
		    }
	  	}
    }
    break;
  case '\t':  // go to next Horizontal Tab stop
  	WhiteSpaceNumb = TabSize - (TextX_Pos%TabSize);
  	for(Int32U k = 0; k < WhiteSpaceNumb; ++k)
  	{
      LCD_SET_WINDOW(xl,xr,yu,yd);
	  	if(GLCD_TextCalcWindow(&xl,&xr,&yu,&yd,&H_Size,&V_Size))
	  	{
		    for(Int32U i = 0; i < V_Size; ++i)
		    {
		      for(Int32U j = 0; j < H_Size; ++j)
		      {
		        LCD_WRITE_PIXEL(TextBackgndColour);
		      }
		    }
		    ++TextX_Pos;
	  	}
	  	else
	  	{
	  		break;
	  	}
  	}
    break;
  case '\f':  // go to top of page (Form Feed)
  	// clear entire window
  	H_Size = XR_Win - XL_Win;
  	V_Size = YD_Win - YU_Win;
    // set character window X left, Y right
    LCD_SET_WINDOW(XL_Win,XR_Win,YU_Win,YD_Win);
    // Fill window with background font color
    for(Int32U i = 0; i <= V_Size; ++i)
    {
      for(Int32U j = 0; j <= H_Size; ++j)
      {
        LCD_WRITE_PIXEL(TextBackgndColour);
      }
    }
  	
  	TextX_Pos = TextY_Pos = 0;
    break;
  case '\a':  // signal an alert (BELl)
    TEXT_BEL1_FUNC();
    break;
  default:
    // Calculate the current character base address from stream
    // and the character position
    if((c <  pCurrFont->CharacterOffset) &&
    	 (c >= pCurrFont->CharactersNuber))
   	{
   		c = 0;
    }
    else
    {
    	c -= pCurrFont->CharacterOffset;
    }
    pSrc = pCurrFont->pFontStream + (H_Line * pCurrFont->V_Size * c);
    // Calculate character window and fit it in the text window
    if(GLCD_TextCalcWindow(&xl,&xr,&yu,&yd,&H_Size,&V_Size))
    {
	    // set character window X left, Y right
	    LCD_SET_WINDOW(xl,xr,yu,yd);
	    // Send char data
	    for(Int32U i = 0; i < V_Size; ++i)
	    {
        SrcInc = H_Line;
        for(Int32U j = 0; j < H_Size; ++j)
	      {
	        Temp = (*pSrc & (1UL << (j&0x7)))?TextColour:TextBackgndColour;
	        LCD_WRITE_PIXEL(Temp);
	        if((j&0x7) == 7)
	        {
	          ++pSrc;
            --SrcInc;
	        }
	      }
        // next line of character
	      pSrc += SrcInc;
	    }
    }
    ++TextX_Pos;
  }
  return(c);
}