lcd12232driver.c

wwwx5025编成的资料

//#pragma src

#define __LCM12232_Source_Code_

#include <reg52.h>

#include <stdio.h>
#include <string.h>
#include <intrins.h>

#include "LCD12232Driver.h"

#include "DotLib.H"


#define LCD_MAX_X 15

//------------------ 私用变量 ---------------------

//sbit BackLightCtrl = P3^5;	// LCM 背光控制		0 - 亮		1 - 灭

static bit highlighted;		// 阴\阳显示标志字符	0 - 正常(阳)	1 - 反显(阴, 高亮)

static uint8 data cursor_x;		// 显示 x 坐标 word		0 ~	15
static uint8 data cursor_y;		// 显示 y 坐标 			0 ~ 1 	(两行 字高16dot)

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

#ifdef __LCM_BUS_DEVICE_MODE_

	
	volatile Uchar xdata WriteMasterDataAddr	_at_	0x8800;		// 写主区数据地址
	volatile Uchar xdata WriteMasterCmAddr		_at_	0x8000;		// 写主区命令地址
	volatile Uchar xdata ReadMasterStateAddr	_at_	0x9000;		// 读主区状态地址
	volatile Uchar xdata ReadMasterDataAddr		_at_	0x9800;		// 读主区数据地址
	
	volatile Uchar xdata WriteSlaveDataAddr		_at_	0xE800;     // 写付区数据地址
	volatile Uchar xdata WriteSlaveCmAddr		_at_	0xE000;     // 写付区命令地址
	volatile Uchar xdata ReadSlaveStateAddr		_at_	0xF000;     // 读付区状态地址
	volatile Uchar xdata ReadSlaveDataAddr		_at_	0xF800;     // 读付区数据地址
	
	
	#define OutMI( x )	WriteMasterCmAddr = x
	#define OutMD( x )	WriteMasterDataAddr = x
	
	#define OutSI( x )	WriteSlaveCmAddr = x
	#define OutSD( x )	WriteSlaveDataAddr = x

#else

	/*--------------------- I/O mode -----------------------------------
	
		注: LCD_E1 & LCD_E2 上电后一定要初始化为 0 .
	------------------------------------------------------------------*/
	
	#define DataPort P0

	sbit LCD_E1 = P2^4;		//LCD_E1
	sbit LCD_E2 = P2^5;		//LCD_E2
	
	sbit Ctrl_R = P3^7;		// WR
	sbit Ctrl_W = P3^6;		// RD
	
	sbit LCD_A0 = P2^2;		//LCD_A0
	sbit LCD_RW = P2^3;		//LCD_RW
	
	//sbit LCD_RS = P2^4;		//LCD_RS
	
	/*----------------------------------------------------------------------------
	调用方式：void OutMI(uint8 i)
	函数说明：发指令i到主窗口。（内函数，私有，用户不直接调用）
	----------------------------------------------------------------------------*/
	static void OutMI(uint8 i)
	{
		LCD_E2 = 0;
		LCD_RW = 0;
	    LCD_A0 = 0;
		
		ET0 = 0;			// 关SSR触发中断以防止 SSR 控制干扰显示
		
		LCD_E1 = 1;
		_nop_();
	    DataPort = i;
	    _nop_();
	    _nop_();
		LCD_E1 = 0;
	
		ET0 = 1;
	}
	
	/*-----------------------------------------------------------------------------
	调用方式：void OutMD(uint8 i)
	函数说明：发数据i到主窗口。（内函数，私有，用户不直接调用）
	------------------------------------------------------------------------------*/
	static void OutMD(uint8 i)
	{
		LCD_E2 = 0;
		LCD_RW = 0;
		LCD_A0 = 1;

		ET0 = 0;			// 关SSR触发中断以防止 SSR 控制干扰显示
		
		LCD_E1 = 1;
		_nop_();
		DataPort = i;
		_nop_();
		_nop_();
		LCD_E1 = 0;
	
		ET0 = 1;
	}
	
	/*------------------------------------------------------------------------------
	调用方式：void OutSI(uint8 i)
	函数说明：发指令i到从窗口。（内函数，私有，用户不直接调用）
	------------------------------------------------------------------------------*/
	static void OutSI(uint8 i)
	{
	    LCD_E1 = 0;
	    LCD_RW = 0;
	 	LCD_A0 = 0;

	    ET0 = 0;			// 关SSR触发中断以防止 SSR 控制干扰显示
	    
	    LCD_E2 = 1;
	    _nop_();
	    DataPort = i;
	    _nop_();
	    _nop_();
	    LCD_E2 = 0;
	
	    ET0 = 1;
	}
	
	/*------------------------------------------------------------------------------
	调用方式：void OutSD(uint8 i)
	函数说明：发数据i到从窗口。（内函数，私有，用户不直接调用）
	------------------------------------------------------------------------------*/
	static void OutSD(uint8 i)
	{
		LCD_E1 = 0;
		LCD_RW = 0;
	    LCD_A0 = 1;

	    ET0 = 0;			// 关SSR触发中断以防止 SSR 控制干扰显示
	    
	    LCD_E2 = 1;
	    _nop_();
	    DataPort = i;
	    _nop_();
	    _nop_();
		LCD_E2 = 0;
		
		ET0 = 1;
	}

#endif	// __LCM_BUS_DEVICE_MODE_


/*------------------------------------------------------------------------------
调用方式：void SetPage(uint8 page0,uint8 page1)
函数说明：同时设置主从显示页为0－3页
------------------------------------------------------------------------------*/
#define SetPage(page0,page1) 	{OutMI(0xB8|page1);OutSI(0xB8|page0);}

/*----------------------------------------------------------------------------
调用方式：void SetAddress(uint8 address0,uint8 address1)
函数说明：同时设置主从列地址为0－121。
----------------------------------------------------------------------------*/
#define SetAddress(address0,address1) 	{OutMI(address1);OutSI(address0);}

/*---------------------------------------------------------------------------
调用方式：void PutChar0(uint8 ch)
函数说明：在左页当前地址画一个字节8个点,自上往下，应用纵向取模，字节倒序的字库
-----------------------------------------------------------------------------*/
#define PutChar0(ch) 	OutMD(ch)

/*------------------------------------------------------------------------------
调用方式：void PutChar1(uint8 ch)
函数说明：在右页当前地址画一个字节8个点。
------------------------------------------------------------------------------*/
#define PutChar1(ch) 	OutSD(ch)

/*------------------------------------------------------------------------------
调用方式：void LcdIni(void)
函数说明：12232点阵液晶初始化，开机后仅调用一次。
------------------------------------------------------------------------------*///
// LCM 初始化
void LcdInit(void)
{
	/*
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;
	LCD_RS = 0;

	LCD_RS = 1;
	LCD_RW = 0;
	*/

#ifndef __LCM_BUS_DEVICE_MODE_
	
	LCD_E1 = 0;
	LCD_E2 = 0;
	
	LCD_A0 = 0;
	LCD_RW = 0;
	
#endif	
	
	OutMI(0XE2);	OutSI(0XE2);	//Reset
	OutMI(0xAE);	OutSI(0xAE);	//OFF Display
    OutMI(0XA6);	OutSI(0XA6);	//Active Drive Model
    OutMI(0XA9);	OutSI(0XA9);	//Select 1/32 Duty
    OutMI(0XA0);	OutSI(0XA0);	//ADC select rightwars output
    OutMI(0XEE);	OutSI(0XEE);	//Read Modify Write Off
	OutMI(0x00);	OutSI(0x00);	//Column address set
	OutMI(0xC0);	OutSI(0xC0);	//Display start line
	OutMI(0xAF);	OutSI(0xAF);	//On Display
	OutMI(0X56);	OutSI(0X55);	//POWER SAVE

	BL_ON();
}


/*------------------------------------------------------------------------------
函数说明：清屏，并将显示属性恢复为正常方式, 带初始化 LCM 功能
------------------------------------------------------------------------------*/
void ClearScreen(void)
{
	highlighted = 0;
	ClearLine(0);
	ClearLine(1);
	GotoXY( 0, FirstLine );
}


/*------------- 清指定行 ------------------

 Input: uint8 line	行号 0 ~ 1
 Return: bit		0 - 输入行错误		1 - 成功
------------------------------------------*/
bit ClearLine( uint8 line )
{
	uint8 x;
	uint8 page;

	GotoXY( 0, line );
	line = 1 -line;

	page = line * 2;

	if ( page > 3 )
	{
		return 0;
	}
	else
	{
		for (; page<(line*2+2); page++)
    	{
    		SetPage(page,page);
    		SetAddress(0,0);
    		for(x=0; x<61; x++)
			{
				PutChar0(0);//Clear up master window
				PutChar1(0);//Clear up sub window
			}
    	}

    	return 1;
    }
}




/*------- 在指定位置输出一个字节(8 dot)点阵数据 ----------------

 Input: uint8 dot_x		显示 x 坐标 dot		0 ~ 122
 		uint8 line		显示 y 坐标 line	0 ~ 3
 		uint8 pattern 	点阵数据
 Return: none
----------------------------------------------------------------*/
void DrawBmp2002( uint8 dot_x, uint8 line, uint8 pattern )
{
	//extern bit enable_task_switch;
	//EA = 0; //由于后台任务要画一条线显示状态，因此此函数不能被重入,  禁止任务切换

	dot_x = 120 - ( dot_x % 120 );
	line = 3 - line;

    SetPage( line, line );

	if ( dot_x > 60 ) 	 //只能打一屏，不能超过 122 bit
	{
	    SetAddress( dot_x % 61, dot_x % 61 );
		PutChar1( pattern );
	}
	else
	{
	    SetAddress( dot_x, dot_x );
		PutChar0( pattern );
	}

	//EA = 1;
}

//--------------- 光标增一 ---------------------
void IncreaseCursor(void)
{
	cursor_x++;

	if ( cursor_x >= LCD_MAX_X )
	{
		cursor_x = 0;
		cursor_y++;

		if ( cursor_y >= 2 ) cursor_y = 0;
	}
}


/*--------------- 定位显示坐标 ------------------

 Input: uint8 x		X 坐标 0 ~ 14 	字
 		uint8 y		Y 坐标 0 ~ 1	行
 Return: none

 注：带 X 坐标换行处理。
------------------------------------------------*/
void GotoXY( uint8 x, uint8 y )
{
	cursor_x = x;
	cursor_y = y;

	while( cursor_x >= LCD_MAX_X )
	{
		cursor_x -= LCD_MAX_X;
		cursor_y++;

		if( cursor_y >= 2 ) cursor_y = 0;
	}
}

/*--------------- 取得当前光标 X 坐标 ----------------

 Input: none
 Return: uint8	当前 X 坐标
------------------------------------------------------
uint8 WhereX(void)
{
	return cursor_x;
}
*/


/*--------------- 取得当前光标 Y 坐标 ----------------

 Input: none
 Return: uint8	当前 Y 坐标
------------------------------------------------------
uint8 WhereY(void)
{
	return cursor_y;
}
*/


/*------------- 显示一个英文字符 ( 8 x 16 dot)----------------

 Input: uint8 enChar	显示字符
 						显示起始坐标在 cursor_x & cursor_y 中
 				当 enChar 最高位 = 1，则显示字符带下划线
 Return: none
-------------------------------------------------------------*/
void PrintEnChar( uint8 enChar )
{
	uint8 x, y;
	bit under_line;		// 下划线标志
	bit draw_ul = 0;

	under_line = enChar & 0x80;
	enChar &= 0x7f;

	// 控制字符作空格显示
	if( enChar < ' ' ) enChar = ' ';
	enChar -= ' ';

	for( y=0; y<2; y++ )
	{
		for( x=0; x<8; x++ )
		{
			// 阴\阳显示判断
			if ( highlighted )
			{
				DrawBmp2002( cursor_x * 8 + x, cursor_y * 2 + y,
							 	~( ASCdotLib[ enChar * 16 + y * 8 + x ]
							 		| (draw_ul ? 0x03 : 0) ) );
			}
			else
			{
				DrawBmp2002( cursor_x * 8 + x, cursor_y * 2 + y,
							 	ASCdotLib[ enChar * 16 + y * 8 + x ]
							 		| ( draw_ul ? 0x03 : 0 ) );
			}
		}

		draw_ul = under_line;
	}

	IncreaseCursor();
}


/*------------- 显示一个中文字符 ----------------

 Input: uint8 *cnChar	显示字符
 						显示起始坐标在 cursor_x & cursor_y 中
 Return: none
------------------------------------------------*/
void PrintChChar( uint8 *cnChar )
{
	uint8 x, y;
	uint8 code *bmp;

	bmp = GetChMaxtrix( cnChar );	// 取得汉字点阵

	// 判断本行内能否显示一个汉字
	while ( cursor_x >= (LCD_MAX_X - 1) )
	{
		IncreaseCursor();
	}

	for ( y=0; y<2; y++ )
	{
		for ( x=0; x<16; x++ )
		{
			// 阴\阳显示判断
			if ( highlighted )
			{
				DrawBmp2002( cursor_x * 8 + x, cursor_y * 2 + y, ~(*bmp) );
			}
			else
			{
				DrawBmp2002( cursor_x * 8 + x, cursor_y * 2 + y, *bmp );
			}

			bmp++;
		}
	}

	IncreaseCursor();
	IncreaseCursor();
}


/*--------------- 显示输出中/英文字串 ----------------

 Input: uint8 *str	指向显示字串的指针
 					显示起始坐标在 cursor_x & cursor_y 中
 Return: uint		显示输出字节数
------------------------------------------------------*/
uint8 PrintStr( uint8 *str )
{
	uint8 count = 0;

	while( *str )		// 以字串结束符0x00作为循环结束
	{
		if( *str == '\n' )		// 换行判断
		{
			cursor_y++;
			if( cursor_y >= 2 ) cursor_y = 2;
			cursor_x = 0;
		}
		else
		{
			if( (*str & 0x80) && (str[1] & 0x80) )		// 中/英文字符判断
			{
				PrintChChar( str );
				str++;
				count++;
			}
			else
			{
				PrintEnChar( *str );
			}
		}

		str++;
		count++;
	}

	return count;
}

//----------- 取消高亮 -------------
void ClrHighLight( void )
{
	highlighted = 0;
}

//----------- 设置高亮 -------------
void SetHighLight( void )
{
	highlighted = 1;
}

/*--------- 变换显示模式 ------------
void TurnDisM( void )
{
	highlighted = ~highlighted;
}
*/