lcd.c

本程序是LM2068R320*128的液晶显示驱动。呵呵！终于调出来了！

#include "lcdhead.h"

/*******************************************/
//延时函数
/*******************************************/
void TimeDelay(ulint m)        
{
	ulint j;
	ulint i;
	
	for(i=0; i<m; i++)
	    for(j=0; j<109; j++)
	        _NOP();
}

/****************************************************/
// IO Routine
/******************************************************/
/*void SdCmd(uchar Command)   //send command
{
    _WR = 1;                // init all control signal
    _RD = 1;
    RS  = 0;                // for command
    LCDBUS = Command;
    _CS = 0;                // enable the access
    _nop_();
    _WR = 0;
    _nop_();
    _WR = 1;
    _nop_();
    _CS = 1;                // disable the access
}*/
/***********************************************************/
//发送命令字
/***********************************************************/

void SendCmd(uchar command)
{
     LCD_WR_HI;
     LCD_RS_LO;               //for command
     
     LCD_Data = command;
     
     LCD_CS_LO;
     _NOP();
     LCD_WR_LO;
     _NOP();
     LCD_WR_HI;
     _NOP();
     LCD_CS_HI;
}

/*************************************************************/
//发送数据字
/*************************************************************/

void SendData(uchar data)
{
     LCD_WR_HI;
     LCD_RS_HI;                 //for data
     
     LCD_Data = data;
     
     LCD_CS_LO;
     _NOP();
     LCD_WR_LO;
     _NOP();
     LCD_WR_HI;
     _NOP();
     LCD_CS_HI;     
}

/***************************************************************/
/*void initLCDM(void)
{
	_RES    = 1;    // reset pin
	_RES    = 0;
	delayms(1);
	_RES    = 1;
	delayms(1);

	SdCmd(0x00);SdCmd(0xCD); delayms(1); // Whole Chip LCD Controller Reg(Char Mode)
	SdCmd(0x10);SdCmd(0x29); delayms(1); // Whole Chip Cursor Control Reg(disable cursor)
	SdCmd(0x11);SdCmd(0x10); delayms(1); // Distance of Words or Lines Reg(cursor=1,gap=0)

	SdCmd(0x90);SdCmd(0x04); delayms(1); // Shift Clock Control Reg(320x240, 61Hz)


	SdCmd(0xF0);SdCmd(0xA0); delayms(1); // Font Control Reg

        SdCmd(0x20);SdCmd(0x27); delayms(1); // Active Window Right  Reg
	SdCmd(0x30);SdCmd(0xEF); delayms(1); // Active Window Bottom Reg(240 duty)
	SdCmd(0x40);SdCmd(0x00); delayms(1); // Active Window Left   Reg
	SdCmd(0x50);SdCmd(0x00); delayms(1); // Active Window Top    Reg

	SdCmd(0x21);SdCmd(0x27); delayms(1); // Display Window Right  Reg
	SdCmd(0x31);SdCmd(0xEF); delayms(1); // Display Window Bottom Reg(240 duty)
	SdCmd(0x41);SdCmd(0x00); delayms(1); // Display Window Left   Reg
	SdCmd(0x51);SdCmd(0x00); delayms(1); // Display Window Top    Reg

	SdCmd(0x81);SdCmd(0x40); delayms(1); // by default	
	SdCmd(0xD0);SdCmd(ContrastLevel); delayms(1); // enable the contrast control, set to 32	
}
*/
/***********************************************************************************************/

void LCDInit(void)
{
        LCD_RESET_HI;
        LCD_RESET_LO;
        TimeDelay(1);
        LCD_RESET_HI;
        TimeDelay(1);
      
        SendCmd(0x00);SendCmd(0xcd); TimeDelay(1);
        SendCmd(0x10);SendCmd(0x29); TimeDelay(1);
        SendCmd(0x11);SendCmd(0x10); TimeDelay(1);
      
        SendCmd(0x90);SendCmd(0x04); TimeDelay(1);
      
        SendCmd(0xF0);SendCmd(0xA0); TimeDelay(1); 

        SendCmd(0x20);SendCmd(0x27); TimeDelay(1); 
	SendCmd(0x30);SendCmd(0xEF); TimeDelay(1); 
	SendCmd(0x40);SendCmd(0x00); TimeDelay(1); 
	SendCmd(0x50);SendCmd(0x00); TimeDelay(1);

	SendCmd(0x21);SendCmd(0x27); TimeDelay(1); 
	SendCmd(0x31);SendCmd(0xEF); TimeDelay(1);  
	SendCmd(0x41);SendCmd(0x00); TimeDelay(1);
	SendCmd(0x51);SendCmd(0x00); TimeDelay(1); 

	SendCmd(0x81);SendCmd(0x40); TimeDelay(1); 
	SendCmd(0xD0);SendCmd(0x06); TimeDelay(1);           
}

/****************************************************************/
// LCD Contrast Contral
/****************************************************************/

void LCD_Contrast(uchar level)
{
        uchar i;
        i = 0x10 + level;
        SendCmd(0xD0);SendCmd(i); TimeDelay(20);   
}

/******************************************************************/
/*void WriteGraphicScreen(uchar *GDData)
// DisplayData should be 320x240/8 = 9600byte
// set to graphic display
{
	uchar TempData;
	uchar i, j;
	
    SdCmd(0x60); SdCmd(0x00); // set cursor X location to 0
    SdCmd(0x70); SdCmd(0x00); // set cursor Y location to 0
    SdCmd(0x00); SdCmd(0xC5); // normal power mode, Graphical mode,
                              // display on, normal display.
    for(i=0;i<240;i++)
		{
      	for(j=0;j<40;j++)
     		{
     		TempData=(*(GDData+(i*40)+j));
     		SdData(TempData);
 		    }
        }
}*/
void DispalyGraphicScreen(uchar *Pic)
{
        uchar tempdata;
        uchar i,j;
       
        SendCmd(0x00);SendCmd(0xc5);
        
        SendCmd(0x60);SendCmd(0x00);                //set cursor X location to 0
        SendCmd(0x70);SendCmd(0x00);                //set cursor Y location to 0
      
       for(i=0;i<240;i++)
	{
      	for(j=0;j<40;j++)
     		{
     		  tempdata=(*(Pic+(i*40)+j));
     		  SendData(tempdata);
 	        }
        }
       
}

void WriteTextScreen(uchar *TxtData)
// DisplayData should be 20(x2)x15 = 600byte
// set to char display
{
	uchar TempData;
	uchar i,j;
        SendCmd(0x00); SendCmd(0xCD); TimeDelay(1);  // normal power mode, Char mode
                                                     // display on, normal display
        SendCmd(0x60); SendCmd(0x00); TimeDelay(1);  // set cursor X location to 0
        SendCmd(0x70); SendCmd(0x00); TimeDelay(1);  // set cursor Y location to 0

        for (j=0; j<15; j++)
		{
	 	for(i=0; i<40; i++)
   			{
	   		          TempData=(*(TxtData+(j*40)+i));
	   		          SendData(TempData);
//	   	                  _NOP();_NOP();_NOP();_NOP();
//                                  _NOP();_NOP(); _NOP(); _NOP();
			}
	    }
}

/*****************************************************************************************/
void LCDClear(void)
{     
        uchar i,j;
       
        SendCmd(0x00);SendCmd(0xc5);
        
        SendCmd(0x60);SendCmd(0x00);
        SendCmd(0x70);SendCmd(0x00);
        for(i=0;i<240;i++)
        {
              for(j=0;j<40;j++)
              {
                   SendData(0x00);
               }
        }
}