关于128X64点阵LCD液晶显示的使用-程序

//与硬件有关的定义：数据口用的是P3口，控制口用的是P2口，

//如果不同，可以更改以下定义。

#include "msp430x44xh"

#define LCD_CON_DIR P2DIR

#define LCD_CON_OUT P2OUT

#define LCD_DI BIT0

#define LCD_RW BIT1

#define LCD_EN BIT2

#define LCD_CS1 BIT3

#define LCD_CS2 BIT6

#define LCD_RST BIT7

#define LCD_DATA_DIR P3DIR

#define LCD_DATA_IN P3IN

#define LCD_DATA_OUT P3OUT

#define LCD_DATA_BIT0 BIT0

#define LCD_DATA_BIT1 BIT1

#define LCD_DATA_BIT2 BIT2

#define LCD_DATA_BIT3 BIT3

#define LCD_DATA_BIT4 BIT4

#define LCD_DATA_BIT5 BIT5

#define LCD_DATA_BIT6 BIT6

#define LCD_DATA_BIT7 BIT7

//

//以下为LCD的命令字

#define DISPLAY_ON 0x3F //显示屏开命令字

#define DISPLAY_OFF 0x3E //显示屏关命令字

#define SET_SHOW 0xC0 //设定显示起始行命令字

#define SET_X 0xB8 //设定显示行命令字

#define SET_Y 0x40 //设定显示列命令字

--------------------------------------------------------------------------------------------------------

#include "LCD_DEFINEH"

void lcd_init(void)

{

LCD_DATA_OUT = 0x00;

LCD_DATA_DIR = 0xFF;

LCD_CON_OUT = LCD_CS1+LCD_CS2+LCD_RST;

LCD_CON_DIR |= LCD_DI+LCD_RW+LCD_EN+LCD_CS1+LCD_CS2+LCD_RST;

LCD_CON_OUT &= ~LCD_RST;

_NOP();

_NOP();

LCD_CON_OUT |= LCD_EN;

_NOP();

_NOP();

LCD_CON_OUT &= ~LCD_EN;

_NOP();

_NOP();

LCD_CON_OUT |= LCD_RST;

_NOP();

_NOP();

}

void write_command(unsigned char command)

{

LCD_DATA_DIR = 0xFF;

LCD_CON_OUT |= LCD_CS1 + LCD_CS2;

LCD_CON_OUT &= ~(LCD_RW + LCD_DI);

LCD_DATA_OUT = command;

LCD_CON_OUT |= LCD_EN;

LCD_CON_OUT &= ~LCD_EN;

}

void write_data( unsigned char data, unsigned char CS1, unsigned char CS2 )

{

LCD_DATA_DIR = 0xFF;

if(CS1) LCD_CON_OUT |= LCD_CS1;

else LCD_CON_OUT &=~LCD_CS1;

if(CS2) LCD_CON_OUT |= LCD_CS2;

else LCD_CON_OUT &=~LCD_CS2;

LCD_CON_OUT |= LCD_DI;

LCD_CON_OUT &=~LCD_RW;

LCD_DATA_OUT = data;

LCD_CON_OUT |= LCD_EN;

LCD_CON_OUT &=~LCD_EN;

}

void clear_lcd(void)

{

unsigned char i,j;

for(i=0;i<8;i++)

{

write_command(SET_X|i);

write_command(SET_Y);

for(j=0;j<128;j++)

{

if(j<=63)write_data(0,1,0);

else write_data(0,0,1);

_NOP();

}

}

}

void display( unsigned char chr, unsigned char nRow, unsigned char nCol,

unsigned char highth,unsigned char wideth )

//chr 显示数据的地址，nRow 在显示屏上第几行，nCol 在显示屏上第几列

//highth 字体的高度，wideth 字体的宽度

//12864有8行，128列

{

unsigned char i,tmpCol,tmpRow,h,m;

unsigned int j;

tmpRow = nRow;

m=0;

for(h=0;h<highth;h=h+8)

{

write_command(SET_X|tmpRow);

tmpCol=nCol;

for(i=0;i<wideth;i++)

{

if(tmpCol<64)

{write_command(SET_Y|tmpCol);write_data(chr[i+j],1,0);}

else

{write_command(SET_Y|(tmpCol-64));write_data(chr[i+j],0,1);}

tmpCol++;

}

m++;

j=mwideth;

tmpRow++;

}

}

//向Lcd发送命令程序

void

Lcd_Command(unsigned

char

Command)

{

while(Lcd_Busy());

//判断lcd是否内部 *** 作状态

E_L;RS_L;RW_L;

//E=0(致能),RS=0(命令),RW=0(写)

delay_us(2);

//液晶延时子程序

E_H;

PORTB

=

Command;

//向Lcd发送命令

delay_us(2);

//液晶延时子程序

E_L;

}

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