lcd_drv.c

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#include "config.h"                         /* system configuration */
#include "lib_mcu\mp3\mp3_drv.h"                        /* mp3 driver definition */
#include "modules\display\lcd_drv.h" 
#define CMD_SET_LOWER_COLUMN_ADDRESS(x)     (x&0xf)
#define CMD_SET_HIGHER_COLUMN_ADDRESS(x)    0x10|((x>>4)&0xf)
#define CMD_SET_PAGE_ADDRESS(x)             0xb0|(x&0xf)

void _MultiNop(int time)
   {
    int i;
	  int delayLoopCount=400;
    for(;time>0;time--)
	  for(i=0;i<delayLoopCount;i++);
   }


    void LCDDataOut(Uchar Data)
  {
    int i;
    for(i=0;i<8;i++)
    {
        if(Data&0x80)
            LCD_SDA= TRUE;
        else
            LCD_SDA = FALSE;
        Data = (Data<<1)&0xfe;
        LCD_CLK = FALSE;
        LCD_CLK = TRUE;
    }
 }

     void LCDSendCMD(Uchar Command)
    {
    LCD_DC= FALSE;
    LCD_CS1= FALSE;
    //_MultiNop(1);
    LCDDataOut(Command);
    LCD_CS1= TRUE;
     }

    void LCDSendData(Uchar Data)
    {
    LCD_DC= TRUE;
    LCD_CS1= FALSE;
   // _MultiNop(1);
    LCDDataOut(Data);
    LCD_CS1= TRUE;
     }



void Draw2Digit( Uchar Pos, Uchar HexCode );
void Draw8x6Icons( Uchar Page, Uchar Column, Uchar Index );

   void LCDDisplayInit()
   {
   int j;
    LCD_RESET = TRUE; 
    LCD_CS1= FALSE;
    LCD_SDA= TRUE;
    LCD_DC = TRUE;
    LCD_CLK = TRUE;
   LCD_RESET = FALSE; 
     for(j=0;j<0xFFFF;j++)
	{
     _MultiNop(5);
	}  
    LCD_RESET = TRUE; 
    for(j=0;j<0xFFFF;j++)
	{
     _MultiNop(5);
	}   
	  BacklightTurnOff;
	  LCDSendCMD(0xE2);//RESET
    LCDSendCMD(0xa0);//zgz [ADC Select]
    LCDSendCMD(0xC8);//zgz [SHL Select]
    LCDSendCMD(0xA3);//zgz [LCD Bias Select 1/9]
     for(j=0;j<0xFFFF;j++)         //Waiting for 50% rising of VOUT
     {
      _MultiNop(2);
     }
    LCDSendCMD(0x2C);//zgz [Power Control:VC=1,VR=0,VF=0]
    for(j=0;j<0xFFFF;j++)         //Waiting for 50% rising of VOUT
     {
      _MultiNop(2);
     }
   LCDSendCMD(0x2E);//zgz  [Power Control:VC=1,VR=1,VF=0]
   for(j=0;j<0xFFFF;j++)      //Waiting for>=1ms
     {
      _MultiNop(2);
     }

     LCDSendCMD(0x2F);//zgz  [Power Control:VC=1,VR=1,VF=1]
    for(j=0;j<0xFFFF;j++)
     {
       _MultiNop(2);
     }
    LCDSendCMD(0x21);//zgz  [Regulator Resistor Select (LCD 浓度)] play:21
    LCDSendCMD(0x81);//zgz  [Reference Voltage Register Set (Brightness)]
    LCDSendCMD(0x24);//zgz  [Electronic volume setting (Brightness setting)]  
  	//LCDSendCMD(0x40);//START LINE
  	//LCDSendCMD(0xe0);//
  	LCDSendCMD(0xa4);
  	LCDSendCMD(0x81);//contrast
  	LCDSendCMD(0x20);//default contrast 40
    LCDSendCMD(0xaf);//display On
   // LCDSendCMD(0xa5);//FULL display]
}



/*=============================================================================
Description:

OK-02/10
=============================================================================*/
void SetLCDAddress( Uchar Page, Uchar Column )
{   
    // Page 
    LCDSendCMD(CMD_SET_PAGE_ADDRESS(Page));
    // Column setting
    LCDSendCMD(CMD_SET_LOWER_COLUMN_ADDRESS(Column));
    LCDSendCMD(CMD_SET_HIGHER_COLUMN_ADDRESS(Column));
    
}
/*=============================================================================
Description:
        
        !!! Data in XRAM !!!

OK-02/11        
=============================================================================*/
/*
void PutXdataToLCD( Uchar pBuffer, Uchar Loop )
{
    do {
        LCDSendData( *pBuffer );
        pBuffer++;
    }while (--Loop);
    
}
*/
/*=============================================================================
Description:
        
    !!! Data in CODE !!!

=============================================================================*/

void PutCodeToLCD( Byte *pBuffer, Uchar Loop )
{
    
    do {
        LCDSendData( *pBuffer );
        pBuffer++;
    }while (--Loop);
    
}





/*=============================================================================
Description:
        
    0 <= Value <= 7, total 8 step

=============================================================================*/
void LCDSetContrast( Uchar Value )
{
    LCDSendCMD( 0x20 + Value );
}


/*=============================================================================
Description:

    display special data or clear screen

=============================================================================*/
void LCDClearLine( Uchar page, Uchar column, Uint16 Length )
{
    SetLCDAddress( page, column );
    
    do{
        LCDSendData( 0 );
    }while( --Length );
}


/*=============================================================================
Description:

=============================================================================*/
void LCDPowerOff()
{

    // turn off LCM
   // mNT7502DisplayOff;
    
    // clear all screen data
    LCDSendCMD(0XA0);
    
    // turn off power..
 //   mNT7502PowerOff;
}



/*=============================================================================
Description:

    this function can directly access NT7502 module
    to execute a NT7502 command

=============================================================================*/
void LCDSendCommand( Uchar cmd )
{
    LCDSendCMD( cmd );
}


/*=============================================================================
Description:

    this function can directly access NT7502 module
    to write a data to NT7502
    
=============================================================================*/


void Draw8x6Icons( Uchar Page, Uchar Column, Uchar Index )
{
    SetLCDAddress( Page , Column );
    PutCodeToLCD( &Icon8x6[Index][0], 6 );
}


void Draw2Digit( Uchar Pos, Uchar HexCode )
{
    int i,j;
    i = HexCode / 10;
	  j = HexCode %10;
    //CalVar2.be.h8 = HexCode / 10;
    //CalVar2.be.l8 = HexCode / 10;

    if ( i > 9 )
        i = 9;

    Draw8x6Icons( 2, Pos,      i );
    Draw8x6Icons( 2, Pos + 6,  j );

}



void prints(unsigned char * temp)
{
 while((*temp)!='\0')
  {
   LCDSendData(*temp);
   temp++;
  }
}
void PutToChina(Uchar Page ,Uchar Column,Byte *prt )
{
//	Uchar i;
	//SetLCDAddress( Page, Column );
 /* for(i=0;i<32;i++);
    {
    	if(i==16)
    	{
    		SetLCDAddress( Page , Column+1);
    	}
    	LCDSendData(*prt);
    	prt++;
    }
    */
     Uchar Loop=32;
 
    do {
    	  if(Loop==16)
    	{
    		SetLCDAddress( Page+1 , Column);
    	}
        LCDSendData( *prt );
        prt++;
    }while (--Loop);
  }