/*
*******************************************************************************
*                                              Shanghai Maritime University
*                                                 Pudong Avenue 1550#
*
*                                        (c)Copyright 2005,SMSC,Shanghai,China
*                                                    All Rights Reserved
*
*
*
*  Filename   : LCD.c
*  Programmer : Chen Jutao(Jason Chen)
*  Description: This C file is the dot matrix 2-screen LCD driver function file.
* 
********************************************************************************
*/  

//#include "Data_types.h"
#include "LCD_CFG.h"

/*
**************************************************************************
*                                     Declaration and macros of Functions in This File                 
**************************************************************************
*/

#ifndef CHAR
#define CHAR char
#endif

void DispInit(void);
void DispSetFont(INT8U fontIx,Disp_Bitmap_Attrib *font);
void DispSetPic(INT8U picIx,Disp_Bitmap_Attrib *pic);
void DispOnOff(BOOLEAN  toggle);
void DispClrScr (void);
void DispSetPageAddr (INT8U pageaddr);
void DispSetYAddr (INT8U Yaddr);
void DispSetStartLine (INT8U startline);
void DispDataWr(BOOLEAN left_right,INT8U data);

#if DISP_NONASCII_CHAR == 1
void DispNAChar(INT8U row,INT8U col,INT8U ix);
#endif

void DispChar (INT8U row,INT8U col,CHAR c);
void DispBitmap(INT8U row, INT8U col,INT8U bitmapTotalPages,INT8U bitmapWidth,INT8U *bitmapData,INT8U dataArrayStartIx);
BOOLEAN DispSetCursor (INT8U row,INT8U col);
void DispStr(INT8U row,INT8U col, CHAR *s);

#if DISP_PICTURE == 1
void DispGraphic(INT8U row,INT8U col);
#endif



#define TRANS(c,i) c*CurBitmap.BitmapArrayLength+i

Disp_Bitmap_Attrib CurBitmap;


/*
**************************************************************************
*                                           Dummy for a Period of  Time
*
* Description :  This function is used to delay a period and cpu can do nothing.
* Arguments  :  'counts' is the dummy counts.                                 
* Returns      :   None.                  
**************************************************************************
*/

static void Delay(INT16U counts)
{
	int i;
	for(i=0;i<counts;i++);	
}

/*
**************************************************************************
*                                            Set the Font
*
* Description :  This function is used to set the attribute values of the font that is currently used.
* Arguments  :  'fontIx' is the index of the font to be set in system font table;
*                      'font' is the pointer of font bitmap structure variable.
* Returns      :   None.                  
**************************************************************************
*/
  void DispSetFont(INT8U fontIx,Disp_Bitmap_Attrib *font)
{
       INT_DISABLE()
        *font=FontTable[fontIx];
	INT_ENABLE()   
}


#if DISP_PICTURE == 1
/*
**************************************************************************
*                                            Set the Picture
*
* Description :  This function is used to set the picture that is to display.
* Arguments  :  'picIx' is the index of the picture to be displayed  in system picture table;
*                      'pic' is the pointer of picture bitmap structure variable.
* Returns      :   None.                  
**************************************************************************
*/
  void DispSetPic(INT8U picIx,Disp_Bitmap_Attrib *pic)
{
        INT_DISABLE()
        *pic=PicTable[picIx];
	 INT_ENABLE()
}

#endif
/*
**************************************************************************
*                                            Initialize the LCD Screen
*
* Description :  This function is used to initialize the LCD screen.System default font will be 
*                      set, and display will be cleared and then turned on.If in multitask mode, the
*                      binary semaphore of dispaly will also be created.
* Arguments  :  None                                  
* Returns      :   None.                  
**************************************************************************
*/
 void DispInit(void)
{
#if MULTITASK == 1
       DispSem=xOSSemBCreate(0, 1);
#endif
	 DispSetFont(FONT0,&CurBitmap);
        DispClrScr();
	 DispOnOff(TRUE);
	
}

/*
**************************************************************************
*                                            Turn-on or Turn-off the LCD
*
*  Description :  This function is used to turn-on or off the LCD.
*  Arguments :   'toggle' indicates turn-on or turn-off. 'TRUE' means ON;'FALSE' means
*                       OFF.                                    
*  Returns      :  None.                  
**************************************************************************
*/

void DispOnOff(BOOLEAN  toggle)
{
   
	if(toggle)
	  Disp_InstrAddr=DISP_CMD_TURNON; 
	else
	  Disp_InstrAddr=DISP_CMD_TURNOFF ;
	Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
	return;
}
/*
**************************************************************************
*                                            Clear the LCD Screen
*
* Description :  This function is used to clear the LCD screen.
* Arguments :   None                                  
* Returns      :   None.                  
**************************************************************************
*/

void DispClrScr (void)
{
       INT8U i,j;
	   
#if MULTITASK == 1
     INT8U err;
     xOSSemTake(DispSem, 0, &err);
#endif

       DispSetStartLine(0);
       DELAY(1);
	  for(i=0;i<DISP_MAX_PAGES;i++)
	  {	DispSetPageAddr(i);DispSetYAddr(0);
	   for(j=0;j<DISP_MAX_COLS/2;j++)
	   	{
	   	  Disp_L_DataAddr=0;
	   	  Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
	   	  DELAY(1);	  
	   	}
	   	DispSetPageAddr(i);DispSetYAddr(0);
	   for(j=0;j<DISP_MAX_COLS/2;j++)
	   	{
	   	  Disp_R_DataAddr=0;
	   	  Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
	   	  DELAY(1);	  
	   	}
	}
#if MULTITASK == 1
     xOSSemGive(DispSem);
#endif	
}
/*
**************************************************************************
*                                     Set Page Address( X Address )
*
* Description :  This function is used to set X address(page address).
* Arguments  :   'pageaddr' is the page address to be set.It is from 0 to 7, if other value is 
*                      passed,it will be truncated.
* Returns      :   None.                  
**************************************************************************
*/

void DispSetPageAddr (INT8U pageaddr)
{
     pageaddr &=0x7;
     Disp_InstrAddr=DISP_CMD_SETPAGE+pageaddr;
     Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
     DELAY(1);
	 return;
}

/*
**************************************************************************
*                                            Set Y Address 
*
* Description :  This function is used to set Y address(column address).
* Arguments  :  'Yaddr' is the Y address to be set.It is from 0 to 63, if other value is 
*                      passed,it will be truncated.
* Returns      :   None.                  
**************************************************************************
*/

void DispSetYAddr (INT8U Yaddr)
{
     Yaddr &=0x3F;
     Disp_InstrAddr=DISP_CMD_SETY+Yaddr;
     Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
     DELAY(1);
	 return;
}

/*
**************************************************************************
*                                     Set start line
*
* Description :  This function is used to set start line.
* Arguments  :  'startline' is the start line to be set.It is from 0 to 63, if other value is 
*                      passed,it will be truncated.
* Returns      :   None.                  
**************************************************************************
*/

void DispSetStartLine (INT8U startline)
{
     startline &=0x3F;
     if(startline==0)
      Disp_InstrAddr=DISP_CMD_SETSTARTLINE;
     else
      Disp_InstrAddr=DISP_CMD_SETSTARTLINE+64-startline;
     Disp_Aux_InstrAddr=DISP_CMD_AUXILIARY;
     DELAY(1);
	 return;
}

/*