lcd.c

M200一个与单片机通信的C语言软件源代码

/***********************************************************************************
/----------------------Copyright (c) 2005 ~ 2008 Miartech. All Rights Reserved.-----------------------/
/***********************************************************************************
**-----------------------------------------File Info--------------------------------------------
** Last modified Date:  2008-06-24
** Descriptions: HMC16223(16*2 Words LCD)'s Primary Functions
**--------------------------------------------------------------------------------------------
** Created By:  	Kelven
** Created Date:	2006-11-23
**--------------------------------------------------------------------------------------------
** Modified by: 	Kelven
** Modified date:	2007-09-04
** Version:		V4.0.0
** Descriptions:
**--------------------------------------------------------------------------------------------
** Modified by: 	Kelven
** Modified date:	2008-06-24
** Version:		V4.0.1
** Descriptions:	Updating Key Configrating Function, Added PLC Chip Register Value Setting Module
***********************************************************************************/

#include "..\inc\LCD.h"

/*--------------------------------------------------------------------------------------------
** --Note: Only When LCD_E Have a High-to-Low Pulse,The HMC16223 Can Send or Receive Data Correct --** 
**------------------------------------------------------------------------------------------*/

/***********************************************************************************
** Function Name:	LCD_Wait
** Input Parameters:None
** Output Parameters:None
** Implement:Check Bit7 of LCD_DATA to Determine Whether the LCD is Busy or Ready
***********************************************************************************/
void LCD_Wait(void)
{  	
	bit	bLCD_Busy_Flag;	
	do
	{	
		LCD_RS = 0;               
		LCD_RW = 1;               
		LCD_E = 1;
		bLCD_Busy_Flag = LCD_DATA7;//Read BUSY FLAG (BF). BF=1: Internal Operation;BF=0:Can Accept Instruction.
		LCD_E = 0;                
	}
	while(bLCD_Busy_Flag==1);           
}

/***********************************************************************************
** Function Name:	Init_LCD
** Input Parameters:None
** Output Parameters:None
** Implement:Initialization Of LCD & Wirte Intial Value Of LCD's Registers
***********************************************************************************/
void Init_LCD(void)
{       
	BYTE cForCnt;

	LCD_DATA5 = 1;         
	LCD_DATA4 = 1;	
	for(cForCnt = 0;cForCnt < 3;cForCnt ++)
	{		
		LCD_E = 1;        
		LCD_E = 0;
		TOOL_Delay_MS(20);
	}

	LCD_DATA5 = 1;         
	LCD_DATA4 = 0;
	LCD_E = 1;        
	LCD_E = 0;
	LCD_Wait();

	/*******************************************************************************
	//Set Interface Data Length(DL), Number of Display Lines(L) and Character Font(F).0 0 0 0 1 DL N F X X
	//DL=1: 8Bits;DL=0: 4Bits. N=1: 2Lines; N=0: 1Lines. F=1:5X11 Dots; F=0: 5X7 Dots.
	*******************************************************************************/
	DSP_Write_Cmd(0x28);	//4Bits Data Length;2Lines Display;5X7Dots.  Function Set = 00101000;

	/*******************************************************************************
	//Set Display (D),Cursor(C) and Blinking of Cursor(B) ON/OFF.D=1:Display ON; D=0:Display OFF.
	//C=1:Cursor ON; C=0:Cursor OFF. B=1:Blink ON;B=0,Blink OFF.  0 0 0 0 0 0 1 D C B
	*******************************************************************************/
	//DSP_Write_Cmd(0x08);	//Display OFF;Cursor OFF;Blink OFF.  Display ON/OFF control = 00001000;

	/*******************************************************************************
	//Set Cursor Moving Direction and Enable the Shift of the Display. 0 0 0 0 0 0 0 1 I/D S
	//I/D=1: Increment; 1/D=0: Decrement;S=1: Whole Display Shift When Data is Written.
	*******************************************************************************/
	DSP_Write_Cmd(0x06);	//Moving Direction = Increment;Disable Whole Shift.  Entry Mode Set = 00000110;

	/*******************************************************************************
	//Move the Cursor and Shift the Display Without Changing DDRAM Contents. 0 0 0 0 0 1 S/C R/L X X
	//S/C=1: Display Shift;S/C=0:Cursor move. R/L=1:Shift to Right;R/L=0:Shift to Left.
	*******************************************************************************/
	//DSP_WriteCom(0x10);	//Cursor move;Shift to Right.  Cursor or Display shift Set = 00010000;

	DSP_Write_Cmd(0x0c);	//Display ON;Cursor OFF;Blink OFF.  Display ON/OFF control = 00001100;
}

/***********************************************************************************
** Function Name:	Write_To_LCD
** Input Parameters:cData_Byte:The Data Write to LCD
** Output Parameters:None
** Implement:Wirte Data/Command to LCD
***********************************************************************************/
void Write_To_LCD(BYTE cData_Byte)
{     
	BYTE cSend_Data;
	LCD_RW = 0; 
	cSend_Data = 0;                                   
	cSend_Data =  (P2 & 0x0f);
	cSend_Data |= (cData_Byte & 0xf0);
	P2 = cSend_Data;
	cData_Byte = cData_Byte<<4;
	LCD_E = 1;        
	LCD_E = 0;       
	cSend_Data =  (P2 & 0x0f);
	cSend_Data |= (cData_Byte & 0xf0);
	P2 = cSend_Data;	
	LCD_E = 1;        
	LCD_E = 0;
}

/***********************************************************************************
** Function Name:	DSP_Write_Data
** Input Parameters:cDSP_Data_Byte:The Data Write to LCD
** Output Parameters:None
** Implement:Wirte Display Data to LCD
***********************************************************************************/
void DSP_Write_Data(BYTE cDSP_Data_Byte)
{			
	LCD_RS = 1;
	Write_To_LCD(cDSP_Data_Byte);
	LCD_Wait();							
}

/***********************************************************************************
** Function Name:	DSP_Write_Cmd
** Input Parameters:cLCD_Cmd_Byte:The Command Write to LCD
** Output Parameters:None
** Implement:Wirte Command to LCD
***********************************************************************************/
void DSP_Write_Cmd(BYTE cLCD_Cmd_Byte)
{     
	LCD_RS = 0;
	Write_To_LCD(cLCD_Cmd_Byte);
	LCD_Wait();						   
}

/***********************************************************************************
** Function Name:	DSP_Show
** Input Parameters:cDSP_Addr:The Address of DSP;ptrDSP_Str:The Pointer to DSPString Address
** Output Parameters:None
** Implement:Wirte Dispaly Address of LCD & The Character String That Want to Display
***********************************************************************************/
void DSP_Show(BYTE cDSP_Addr, BYTE code *ptrDSP_Str)
{
	BYTE cString_Length = 0;
	DSP_Write_Cmd(cDSP_Addr);    
	while(ptrDSP_Str[cString_Length] != 0x00) 
	{   
		DSP_Write_Data(ptrDSP_Str[cString_Length]);
		cString_Length ++;
	}
}

/***********************************************************************************
** Function Name:	DSP_One_Char
** Input Parameters:cXRow:Horizontal Position;cYRow:Vertical Position;cData:Display Data
** Output Parameters:None
** Implement: Display the Data on the Appointed Position
***********************************************************************************/
/*void DSP_One_Char(BYTE cXRow, BYTE cYRow, BYTE cData)
{
	cYRow &= 0x01;
	cXRow &= 0x0F;					//restrict X<=15;Y<=1
	if (cYRow == 0x01) 
	{
		cXRow |= 0x40;				//When cYRow == 0x01:cXRow Must Add a offset:0x40;
	}
	cXRow |= 0x80;					//cXRow  Add the Address offset:0x80;
	DSP_Write_Cmd(cXRow);
	//DSP_Write_Data(cData);
	DSP_Write_Data((cData>>4) + 0x30);
	DSP_Write_Data((cData & 0x0f) + 0x30);
}

/***********************************************************************************
** Function Name:	DSP_Data_Format
** Input Parameters:Data:The Display Data Need to Change Format to ASCII
** Output Parameters:None
** Implement: Change Int Format Data to ASCII Format
***********************************************************************************/
void	DSP_Data_Format(WORD wDSP_Data)
{		
	DSP_Write_Data((wDSP_Data/1000 + 0x30));
	DSP_Write_Data(((wDSP_Data%1000)/100 + 0x30));
	DSP_Write_Data(((wDSP_Data%100)/10 + 0x30));
	DSP_Write_Data(((wDSP_Data%10) + 0x30));	
}

/***********************************************************************************
** Function Name:	DSP_Data_Format
** Input Parameters:cDSP_Data:The Display Char Data Need to Change Format to ASCII
** Output Parameters:None
** Implement: Change Char Format Data to ASCII Format
***********************************************************************************/
void DSP_Char_Format(BYTE cDSP_Data)
{		
	DSP_Write_Data((cDSP_Data/100 + 0x30));
	DSP_Write_Data(((cDSP_Data%100)/10 + 0x30));
	DSP_Write_Data(((cDSP_Data%10) + 0x30));	
}

/***********************************************************************************
** Function Name:	DSP_HEX_Format
** Input Parameters:cDSP_Data:The Display HEX Data Need to Change Format to ASCII
** Output Parameters:None
** Implement: Change HEX Format Data to ASCII Format
***********************************************************************************/
void DSP_HEX_Format(BYTE hDSP_Data)
{
	BYTE htemp=0;
	htemp = hDSP_Data/0x10;
	if((htemp >= 0) && (htemp <= 9))
		DSP_Write_Data(htemp + 0x30);
	else
		DSP_Write_Data(htemp + 0x37);
	htemp = hDSP_Data%0x10;
	if((htemp >= 0) && (htemp <= 9))
		DSP_Write_Data(htemp + 0x30);
	else
		DSP_Write_Data(htemp + 0x37);
}

/***********************************************************************************
** Function Name:	Clear_DSP
** Input Parameters:None
** Output Parameters:None
** Implement:Clean All Character Strings Displayed On LCD
***********************************************************************************/
void Clear_DSP(void)
{       
	DSP_Write_Cmd(0x01);
	TOOL_Delay_MS(2);
}

/***********************************************************************************
**										    End Of File											**
***********************************************************************************/