#include <msp430x14x.h>

#define		P2_0_RS			0x01     //數(shù)據(jù)指令控制位
#define		P2_1_RW			0x02    //讀寫控制為
#define		P2_2_EN			0x04    //液晶使能位
#define		P2_3_CS1		0x08    //右片使能位
#define		P2_3_CS2		0x40    //左片使能位
#define		P2_3_RST		0x80    //液晶復(fù)位位

#define		P5_0_DB0		0x01    //P5口為數(shù)據(jù)
#define		P5_1_DB1		0x02
#define		P5_2_DB2		0x04
#define		P5_3_DB3		0x08
#define		P5_4_DB4		0x10
#define		P5_5_DB5		0x20
#define		P5_6_DB6		0x40
#define		P5_7_DB7		0x80

void delay(uint v)      //調(diào)用延時(shí)
{
  while(v>0)
  {
    v--;
  }
}

void port_ini( void )    //程序初始化
{
	P5DIR = 0xFF;    //P5口定義為輸出
	P5OUT = 0x00;    //輸出為0
	
	P2DIR  = 0xFF;    //p2口定義為輸出
	P2OUT  = P2_3_CS1 | P2_3_CS2 | P2_3_RST;    //復(fù)位液晶全屏顯示，復(fù)位
	P2OUT &=~P2_3_RST;    //將復(fù)位端置低
	_NOP();	
        _NOP();
	P2OUT |= P2_2_EN;    //液晶使能開
	_NOP();	
        _NOP();
	P2OUT &=~P2_2_EN;    //關(guān)液晶使能
	_NOP();	
        _NOP();
	P2OUT |= P2_3_RST;    //液晶復(fù)位
	_NOP();
        _NOP();
        delay(400);
}

void write_command( uchar nByte )    //寫控制程序
{
	P5DIR = 0xFF;    //p5設(shè)置為輸出

	P2OUT |= P2_3_CS1+P2_3_CS2;    //選通左右屏
	P2OUT &=~(P2_0_RS+P2_1_RW);    //選定D0~D7發(fā)送的為指令數(shù)據(jù)
	
	P5OUT = nByte;    //p5輸出為 n位
        P2OUT |= P2_2_EN;    //液晶使能開
        delay(10);
	P2OUT &=~P2_2_EN;    //液晶使能關(guān)，E產(chǎn)生下降沿，使D0~D7數(shù)據(jù)發(fā)送到DRm
        delay(400);
}

void write_char( uchar nByte, uchar CS1, uchar CS2 )    //寫數(shù)據(jù)程序
{
	P5DIR = 0xFF;    //p5設(shè)置為輸出

	if(CS1) P2OUT |= P2_3_CS1;    //當(dāng)cs1為高（選通）時(shí)，p2_3_cs1口輸出高
	else P2OUT &=~P2_3_CS1;    //否則p2_3_cs1口輸出低
	
	if(CS2) P2OUT |= P2_3_CS2; //當(dāng)cs2為高（選通）時(shí)，p2_3_cs2口輸出高
	else P2OUT &=~P2_3_CS2;//否則p2_3_cs2口輸出低

	P2OUT |= P2_0_RS;      //H，顯示數(shù)據(jù)。L，寫指令
        P2OUT &=~P2_1_RW;      //H，讀數(shù)據(jù)。L，寫數(shù)據(jù)

	P5OUT  = nByte;
	P2OUT |= P2_2_EN;      //下降沿鎖存數(shù)據(jù)。結(jié)合RW為L時(shí)，數(shù)據(jù)寫到數(shù)據(jù)總線
        delay(3);
        P2OUT &=~P2_2_EN;
}

void clear_lcd( void )      //清屏
{
	uchar i,j;
	for(i=0;i<8;i++)
	{
		write_command(i|0xB8);      //輸出行地址
		write_command(0x40);      //列出始地址
		for(j=0;j<128;j++)      //列地址遞增
		{
			if(j<=63) write_char(0,1,0);      //判斷選通左右屏
			else write_char(0,0,1);
			_NOP();
		}
	}
	
}

void display_hz( uchar *chr, uchar nRow, uchar nCol )
{
	uchar i,tmpCol;
	
	write_command(0xB8|nRow);
	tmpCol=nCol;
	for(i=0;i<16;i++)  //8*16（16點(diǎn)一字）掃描一字所占的十六行
	{
		if(tmpCol<=63)       //掃描左/右屏的列位
		{
			write_command(0x40|tmpCol);
			write_char(chr[i],1,0);
		}
		else
		{
			write_command(0x40|(tmpCol-64));       //右屏起始地址
			write_char(chr[i],0,1);       //選通右屏，chr[i]?
		}
		tmpCol++;
	}
	
	write_command(0xB8|nRow+1);       //nrow+1？？？
	tmpCol=nCol;
	for(i=0;i<16;i++)
	{
		if(tmpCol<=63)
		{
			write_command(0x40|tmpCol);
			write_char(chr[i+16],1,0);
		}
		else
		{
			write_command(0x40|(tmpCol-64));
			write_char(chr[i+16],0,1);       //i+16下一行初始地址
		}
		tmpCol++;
	}
}

void display_8_16_icon( uchar *chr, uchar nRow, uchar nCol )
{
	uchar i,tmpCol;
	
	write_command(0xB8|nRow);
	tmpCol=nCol;
	for(i=0;i<8;i++)
	{
		if(tmpCol<=63)
		{
			write_command(0x40|tmpCol);
			write_char(chr[i],1,0);
		}
		else
		{
			write_command(0x40|(tmpCol-64));
			write_char(chr[i],0,1);
		}
		tmpCol++;
	}
	
	write_command(0xB8|nRow+1);
	tmpCol=nCol;
	for(i=0;i<8;i++)
	{
		if(tmpCol<=63)
		{
			write_command(0x40|tmpCol);
			write_char(chr[i+8],1,0);
		}
		else
		{
			write_command(0x40|(tmpCol-64));
			write_char(chr[i+8],0,1);
		}
		tmpCol++;
	}
}
void display_char( uchar *chr, uchar nRow, uchar nCol )
{
	uchar i,tmpCol;
	
	write_command(0xB8|nRow);
	tmpCol=nCol;
	for(i=0;i<5;i++)
	{
		if(tmpCol<=63)
		{
			write_command(0x40|tmpCol);
			write_char(chr[i],1,0);
		}
		else
		{
			write_command(0x40|(tmpCol-64));
			write_char(chr[i],0,1);
		}
		tmpCol++;
	}
}