initlcd.c

Keil C51完整的128X64LCD显示的电子打铃仪代码,内含DS1302X5045等操作代码

/*********************************************************************
 *Description：    		SW680GAM Machine LCD INITIAL Drive Program 
 *File Name:   			LCD.C
 *Use Compile Lanague: 	KEIL C51
 *Version :    			V1.0
 *Code Author：    		zhouhuanxi
 *Date:					2005-01-14
 CopyRight(C) 			2005 --  SHENZHEN XINSANWEI Machine&Electronics CO.,LTD.
*********************************************************************/
//==== FILE Include And Macro Declare Segment====

#include 	"Config.H"

//-----------------------------------------------

//LCD Working Status Check MARCO(Busy or Ready)
#define		LcdWaitBusy()					 		\
								LCD_DATA=0xFF;		\
  								LCD_DI = 0;  	 	\
  								LCD_RW = 1;	  		\
  								LCD_E  = 1;   		\
  								_NOP_();	  		\
  								LCD_E  = 0;	 		\
								while (LCD_DATA &0x7F ==0x80);

//*************************************************
//============ FUNCTION CODE SEGMENT =============
//*************************************************

//=================================================
//Function: 	InitLcd	
//Description: 	Init LCD
//Parameters: 	NO.
//Call:			SingleCmd()
//Returns: 		NO.
//Side Effects: NO.
//=================================================
void InitLcd(void)	
{
	LCD_DATA 	= 	0x00;
	LCD_DI 		= 	0;
  	LCD_RW 		= 	0;
  	LCD_E 		= 	0;
  	LCD_CS1 	= 	0;
  	LCD_CS2 	= 	0;

  	SingleCmd(DISPLAY_OFF); //Display OFF
  	SingleCmd(START_LINE);
  	SingleCmd(X_ADRESS);
  	SingleCmd(Y_ADRESS);
  	SingleCmd(DISPLAY_ON); // Display ON
}  	

//=================================================
//Function: 	SingleData	
//Description: 	Only Send a Byte of Data to LCD
//Parameters: 	col,c	
				//col ---- 	Display col Address
				//c	----	Diaplay Content
//Call:			_NOP_()
//Returns: 		NO.
//Side Effects: NO.
//=================================================
void SingleData(uint8 col,uint8 c)
{
	LCD_E=0;
	LCD_DI=0;
	LCD_RW=1;
	
	if(col<64)
	{
	LCD_CS1=1; 
	}
	else
	{
	LCD_CS2=1;
	}
	
	LcdWaitBusy();
	
	LCD_DI = 1;      	// Data mode 
	LCD_RW = 0;      	// write mode 
	LCD_DATA = c;		// outbyte 
	_NOP_();
	LCD_E = 1;			// Strobe 
	_NOP_();
	LCD_E = 0;
	_NOP_();
	_NOP_();
	LCD_CS1=0; 	
	LCD_CS2=0;
}

//=================================================
//Function: 	SingleCmd	
//Description: 	Only Send a Byte of Command Data to LCD,Set LCD's Status
//Parameters: 	c	
				//c	----	LCD Control Command (uint8)
//Call:			_NOP_(),LcdWaitBusy()
//Returns: 		NO.
//Side Effects: NO.
//=================================================
void SingleCmd(uint8 c)
{
	LCD_E=0;
	LCD_DI=0;
	LCD_RW=1;
	LCD_CS1=1; 	
	LCD_CS2=1;
	
	LcdWaitBusy();
	
	LCD_DI = 0;       	// Instruction mode 
	LCD_RW = 0;       	// Write mode 
	//LCD_E = 1;			// Strobe 
	
	//_NOP_(); 
	//LCD_E = 0;
	//_NOP_();
	LCD_DATA = c;		// outbyte 
	
	_NOP_();
	_NOP_();
	
	LCD_E = 1;
	_NOP_();
	_NOP_();
	LCD_E = 0;
	
	_NOP_();
	_NOP_();
	
	LCD_CS1=0; 	
	LCD_CS2=0;
}

/************************************************************************************************************
***************************************** END OF FILE *******************************************************
************************************************************************************************************/