本资料为ATMEGA8单片机128X64液晶显示应用源码及仿真等。

/*
KS0108 128*64 LCD C语言驱动
LCD引脚定义
1---GND
2---VCC
3---VLCD
4---D/I
5---R/W
6---E
7到14 D0-D7
15--CS1
16--CS2
17--RESET
18--VEE
19--SW
20--NC
*/
#include <iom16v.h>
#include <macros.h>
#include "delay.h"
unsigned char CurOffset,CurRow,CurPage,CurCol;
#define uchar unsigned char
/* 常量定义 */
#define LCD_STATUS_BUSY 0x80
#define START_LINE0 0xc0
#define DISPLAY_ON 0x3f
#define DISPLAY_OFF 0x3e
#define PARA1 0x40
//#define BIT(x) (1<<x)
//PORTA---数据口 PORTB----控制口
volatile unsigned char *LCD_DIR_PORT = &DDRA;
volatile unsigned char *LCD_IP_PORT = &PINA;
volatile unsigned char *LCD_OP_PORT = &PORTA;

volatile unsigned char *LCD_EN_PORT = &PORTB;
volatile unsigned char *LCD_CS2_PORT = &PORTB;
volatile unsigned char *LCD_CS1_PORT = &PORTB;
volatile unsigned char *LCD_RW_PORT = &PORTB;
volatile unsigned char *LCD_DI_PORT = &PORTB;

char LCD_EN_BIT = BIT(4);
char LCD_CS2_BIT = BIT(3);
char LCD_CS1_BIT = BIT(2);
char LCD_RW_BIT = BIT(1);
char LCD_DI_BIT = BIT(0);

#define SET_LCD_E *LCD_EN_PORT |= LCD_EN_BIT //LCD使能
#define CLEAR_LCD_E *LCD_EN_PORT &= ~LCD_EN_BIT //LCD禁止

#define SET_LCD_DATA *LCD_DI_PORT |= LCD_DI_BIT //选择指令端口
#define SET_LCD_CMD *LCD_DI_PORT &= ~LCD_DI_BIT //选择数据端口

#define SET_LCD_READ *LCD_RW_PORT |= LCD_RW_BIT //读模式
#define SET_LCD_WRITE *LCD_RW_PORT &= ~LCD_RW_BIT //写模式

#define SET_LCD_CS2 *LCD_CS2_PORT |= LCD_CS2_BIT //左屏选择禁止
#define CLEAR_LCD_CS2 *LCD_CS2_PORT &= ~LCD_CS2_BIT //左屏选择使能

#define SET_LCD_CS1 *LCD_CS1_PORT |= LCD_CS1_BIT //左屏选择禁止
#define CLEAR_LCD_CS1 *LCD_CS1_PORT &= ~LCD_CS1_BIT //左屏选择使能

#define LEFT 0
#define RIGHT 1
#define CMD 0
#define DATA 1

void LCD_BUSY(unsigned char lr) //判断忙标志
{
unsigned char status;
asm("cli");
if(lr==LEFT)
{
CLEAR_LCD_CS2; //cs2=0
SET_LCD_CS1; //cs1=1
}
else
{
SET_LCD_CS2; //cs2=1
CLEAR_LCD_CS1; //cs1=0
}
SET_LCD_CMD;
*LCD_DIR_PORT = 0x00;
*LCD_OP_PORT = 0xff;
SET_LCD_READ;
SET_LCD_E;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
while((*LCD_IP_PORT) & LCD_STATUS_BUSY)
{
CLEAR_LCD_E;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
SET_LCD_E;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
CLEAR_LCD_E;
SET_LCD_WRITE;
*LCD_OP_PORT = 0xff;
asm("sei");//)asm("sei");
}

void write_LCD(unsigned char lr,unsigned char cd,unsigned char data) /*写入指令或数据*/
{
asm("cli");//)asm("cli");
LCD_BUSY(lr);
if(cd==CMD)
{
SET_LCD_CMD;
}
else
{
SET_LCD_DATA;
}
SET_LCD_WRITE;
SET_LCD_E;
*LCD_DIR_PORT = 0xff;
*LCD_OP_PORT = data;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
CLEAR_LCD_E;
*LCD_OP_PORT = 0xff;
asm("sei");
}
unsigned char read_LCD(unsigned char lr) /* 读显示数据 */
{
unsigned char data;
asm("cli");
LCD_BUSY(lr);
SET_LCD_DATA;
*LCD_DIR_PORT = 0x00;
*LCD_OP_PORT = 0xff;
SET_LCD_READ;
SET_LCD_E;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
data=*LCD_IP_PORT;
CLEAR_LCD_E;
SET_LCD_WRITE;
LCD_BUSY(lr);
SET_LCD_DATA;
*LCD_DIR_PORT = 0x00;
*LCD_OP_PORT = 0xff;
SET_LCD_READ;
SET_LCD_E;
asm("nop");
asm("nop");
asm("nop");
asm("nop");
data=*LCD_IP_PORT;
CLEAR_LCD_E;
SET_LCD_WRITE;

asm("sei");
return data;
}

void set_start_line_L(unsigned char line) /*设置显示起始行*/ //0-63
{
write_LCD(LEFT,CMD,0xc0|line);
}

void set_start_line_R(unsigned char line) /*设置显示起始行*/ //0-63
{
write_LCD(RIGHT,CMD,0xc0|line);
}

void set_page_L(unsigned char page) /*设置X地址 设置页*/ //0-7
{
write_LCD(LEFT,CMD,0xb8|page);
}
void set_page_R(unsigned char page) /*设置X地址 设置页*/ //0-7
{
write_LCD(RIGHT,CMD,0xb8|page);
}

void set_col_addr_L(unsigned char col) /*设置Y地址*/ //0-63
{
write_LCD(LEFT,CMD,0x40|col);
}

void set_col_addr_R(unsigned char col) /*设置Y地址*/ //0-63
{
write_LCD(RIGHT,CMD,0x40|col);
}

void init_lcd(void) /*初始化函数*/
{
set_start_line_L(0); /*显示起始行为0*/
set_start_line_R(0); /*显示起始行为0*/
write_LCD(LEFT,CMD,DISPLAY_ON); /* 开显示 */
write_LCD(RIGHT,CMD,DISPLAY_ON); /* 开显示 */
}

void clr_lcd(void) /*清屏函数*/
{
unsigned char pages,i;
for(pages=0;pages<8;pages++)
{
set_page_L(pages); /* X 页地址 */
set_page_R(pages); /* X 页地址 */
for(i=0;i<64;i++)
{
set_col_addr_L(i);//Y
set_col_addr_R(i);//Y
write_LCD(LEFT,DATA,0x0);
write_LCD(RIGHT,DATA,0x0);
}
}
}

//ASCII 字模宽度及高度
#define ASC_CHR_WIDTH 8
#define ASC_CHR_HEIGHT 12

typedef struct typFNT_ASC16 /* 汉字字模显示数据结构 */
{
char Index[1];
char Msk[16];
};
//__flash struct typFNT_ASC16 ASC_16[] =
{ /* 显示为8*16 Curier 10 常规*/
"1",0x00,0x00,0x08,0x08,0xFC,0x00,0x00,0x00,0x00,0x00,0x04,0x04,0x07,0x04,0x04,0x00,
"2",0x00,0x00,0x08,0x04,0x84,0x44,0x38,0x00,0x00,0x00,0x06,0x05,0x04,0x04,0x04,0x00,
"3",0x00,0x00,0x08,0x04,0x44,0x44,0xB8,0x00,0x00,0x00,0x02,0x04,0x04,0x04,0x03,0x00,
"4",0x00,0x00,0x80,0x60,0x18,0xFC,0x00,0x00,0x00,0x00,0x01,0x01,0x05,0x07,0x05,0x00,
"5",0x00,0x00,0x7C,0x44,0x44,0x44,0x84,0x00,0x00,0x00,0x02,0x04,0x04,0x04,0x03,0x00,
"6",0x00,0x00,0xF0,0x48,0x44,0x44,0x80,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
"7",0x00,0x00,0x0C,0x04,0x84,0x64,0x1C,0x00,0x00,0x00,0x00,0x06,0x01,0x00,0x00,0x00,
"8",0x00,0x00,0xB8,0x44,0x44,0x44,0xB8,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
"9",0x00,0x00,0x38,0x44,0x44,0x44,0xF8,0x00,0x00,0x00,0x00,0x04,0x04,0x02,0x01,0x00,
"0",0x00,0x00,0xF8,0x04,0x04,0x04,0xF8,0x00,0x00,0x00,0x03,0x04,0x04,0x04,0x03,0x00,
".",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x00,0x00,0x00,
",",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x04,0x00,0x00,0x00,
":",0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x00,0x00,0x00,
";",0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x04,0x00,0x00,0x00,
"-",0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
"_",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,
"A",0x00,0x00,0x80,0x64,0x1C,0x60,0x80,0x00,0x00,0x04,0x07,0x05,0x01,0x05,0x07,0x04,
"B",0x00,0x04,0xFC,0x44,0x44,0x44,0x44,0xB8,0x00,0x04,0x07,0x04,0x04,0x04,0x04,0x03,
"C",0x00,0xF0,0x08,0x04,0x04,0x04,0x04,0x08,0x00,0x01,0x02,0x04,0x04,0x04,0x04,0x02,
"D",0x00,0x04,0xFC,0x04,0x04,0x04,0x08,0xF0,0x00,0x04,0x07,0x04,0x04,0x04,0x02,0x01,
"E",0x00,0x04,0xFC,0x44,0x44,0xE4,0x04,0x0C,0x00,0x04,0x07,0x04,0x04,0x04,0x04,0x06,
"F",0x00,0x04,0xFC,0x44,0x44,0xE4,0x04,0x0C,0x00,0x04,0x07,0x04,0x04,0x00,0x00,0x00,
" ",0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
"=",0x00,0x00,0xA0,0xA0,0xA0,0xA0,0xA0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
"(",0x00,0x00,0x00,0xE0,0x18,0x04,0x00,0x00,0x00,0x00,0x00,0x03,0x0C,0x10,0x00,0x00,
")",0x00,0x00,0x00,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x00,0x10,0x0C,0x03,0x00,0x00,
"V",0x00,0x04,0x3C,0xC4,0x00,0xC4,0x3C,0x04,0x00,0x00,0x00,0x01,0x06,0x01,0x00,0x00,
"m",0x00,0x20,0xE0,0x20,0xC0,0x20,0xC0,0x00,0x00,0x04,0x07,0x00,0x07,0x00,0x07,0x04,
"H",0x00,0x04,0xFC,0x44,0x40,0x44,0xFC,0x04,0x00,0x04,0x07,0x04,0x00,0x04,0x07,0x04,
"*",0x90,0x90,0x60,0xFC,0x60,0x90,0x90,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x00,
};

#define ASC_HZ_WIDTH 12
//#define ASC_HZ_HEIGHT 12

typedef struct typFNT_GB16 /*12*16 汉字字模显示数据结构 */
{
char Index[2];
char Msk[24];
};
__flash struct typFNT_GB16 GB_16[] = { /* 宋体 9 显示为12*16 */
"科",0x8A,0x6A,0xFE,0x29,0x49,0x80,0x92,0xA4,0x80,0xFF,0x40,0x00,0x01,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,
"技",0x44,0x44,0xFF,0x24,0x00,0x64,0xA4,0x3F,0xA4,0x64,0x04,0x00,0x04,0x04,0x07,0x00,0x04,0x04,0x02,0x01,0x02,0x04,0x04,0x00,
"有",0x42,0x22,0x12,0xFA,0x4E,0x4B,0x4A,0x4A,0xFA,0x02,0x02,0x00,0x00,0x00,0x00,0x07,0x01,0x01,0x01,0x05,0x07,0x00,0x00,0x00,
"限",0xFF,0x81,0x99,0xE7,0x00,0xFF,0x25,0xE5,0x25,0xBF,0x40,0x00,0x07,0x00,0x00,0x00,0x00,0x07,0x04,0x02,0x01,0x02,0x04,0x00,
"公",0x20,0x10,0x08,0x07,0xC0,0x30,0x83,0x0C,0x10,0x20,0x20,0x00,0x00,0x04,0x06,0x05,0x04,0x04,0x02,0x03,0x06,0x00,0x00,0x00,
"司",0x08,0x09,0xE9,0x29,0x29,0x29,0xED,0x09,0x01,0xFF,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x04,0x04,0x07,0x00,0x00,
"液",0x19,0xE2,0x14,0x42,0xF2,0x2E,0x72,0x8F,0xAA,0x7A,0x02,0x00,0x01,0x07,0x00,0x00,0x07,0x04,0x04,0x02,0x01,0x02,0x04,0x00,
"晶",0x00,0xC0,0x40,0x5F,0xD5,0x15,0xD5,0x55,0x5F,0x40,0xC0,0x00,0x00,0x07,0x05,0x05,0x07,0x00,0x07,0x05,0x05,0x05,0x07,0x00,
"显",0x00,0x40,0x9F,0x15,0xD5,0x15,0xD5,0x15,0x1F,0xC0,0x00,0x00,0x04,0x04,0x05,0x04,0x07,0x04,0x07,0x06,0x05,0x04,0x04,0x00,
"示",0x10,0x12,0x92,0x52,0x12,0xF2,0x12,0x12,0x53,0x92,0x10,0x00,0x02,0x01,0x00,0x04,0x04,0x07,0x00,0x00,0x00,0x00,0x03,0x00,
"的",0xFC,0x44,0x46,0x45,0xFC,0x10,0x2C,0xC7,0x04,0x04,0xFC,0x00,0x07,0x02,0x02,0x02,0x07,0x00,0x00,0x04,0x04,0x04,0x03,0x00,
"第",0x04,0xEA,0xAB,0xAE,0xAA,0xFC,0xAA,0xAB,0xAE,0xBA,0x82,0x00,0x04,0x04,0x02,0x01,0x00,0x07,0x00,0x02,0x02,0x02,0x01,0x00,
"一",0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x30,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
"行",0x48,0x24,0xF3,0x08,0x09,0x09,0x09,0x09,0xF9,0x09,0x08,0x00,0x00,0x00,0x07,0x00,0x00,0x04,0x04,0x04,0x07,0x00,0x00,0x00,
"二",0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x06,0x04,0x00,0x00,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,
"三",0x00,0x02,0x22,0x22,0x22,0x22,0x22,0x22,0x23,0x02,0x00,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x06,0x04,0x00,
"四",0x00,0xFF,0x81,0x41,0x3F,0x01,0x01,0xFF,0x81,0x81,0xFF,0x00,0x00,0x07,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x07,0x00,
"五",0x00,0x11,0x11,0x91,0x7F,0x11,0x11,0x11,0xF1,0x01,0x00,0x00,0x04,0x04,0x04,0x07,0x04,0x04,0x04,0x04,0x07,0x04,0x04,0x00,
};

unsigned char GetPage(void) /*得到当前页*/
{
return CurPage;
}

unsigned char GetCol(void) /*得到当前列*/
{
return CurCol;
}

void SetPageCol(unsigned char upage, unsigned char ucol) /* 设置液晶的页和列 */
{
CurPage = upage;
CurCol = ucol;
if(ucol<64)
{
set_page_L(upage);
set_col_addr_L(ucol);
}
else
{
set_page_R(upage);
set_col_addr_R(ucol-64);
}
}

/* 设置当前显示的页和列 */
void SetRowCol(unsigned char urow, unsigned char ucol)
{
unsigned char page;
CurRow = urow;
CurCol = ucol;

switch(urow)
{
case 1:
page=0;
CurOffset=1;
break;
case 2:
page=1;
CurOffset=2;
break;
case 3:
page=3;
CurOffset=1;
break;
case 4:
page=4;
CurOffset=2;
break;
case 5:
page=6;
CurOffset=1;
break;
}
SetPageCol(page,ucol);
}

void disp_ch(unsigned char c)
{
unsigned char k,j,uPage,uCol,ch_r,ch_w;
unsigned char width;
unsigned char len;
uPage = GetPage();
uCol = GetCol();
len=sizeof(ASC_16)/sizeof(ASC_16[0]);
for(k=0;k<len;k++)
{
if(c == ASC_16[k].Index[0] ) break;
}
if(k<len)
{

if(c=='-'||c==':')
width=ASC_CHR_WIDTH-2;
else if(c=='|')
width=ASC_HZ_WIDTH-ASC_CHR_WIDTH;
else
width=ASC_CHR_WIDTH;

if(CurOffset==1) //下半部是写半个字节
{
for(j=0;j<width;j++)
{
SetPageCol(uPage,uCol+j);
ch_w=ASC_16[k].Msk[j];
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage+1,uCol);

for(j=0;j<width;j++)
{
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) ch_r=read_LCD(LEFT);
else ch_r=read_LCD(RIGHT);
ch_r&=0xf0;
ch_w=ASC_16[k].Msk[ASC_CHR_WIDTH+j]&0x0f;
ch_w|=ch_r;
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
}
else //上半部是写半个字节
{
for(j=0;j<width;j++)
{
SetPageCol(uPage,uCol+j);
if(uCol+j<64) ch_r=read_LCD(LEFT);
else ch_r=read_LCD(RIGHT);
ch_r&=0x0f;
ch_w=ASC_16[k].Msk[j];
ch_w=ch_w<<4;
ch_w|=ch_r;
SetPageCol(uPage,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage+1,uCol);
for(j=0;j<width;j++)
{
SetPageCol(uPage+1,uCol+j);

ch_r=ASC_16[k].Msk[j];
ch_w=ASC_16[k].Msk[ASC_CHR_WIDTH+j];
ch_r=ch_r>>4;
ch_w=ch_w<<4;
ch_w|=ch_r;
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
}
}
SetPageCol(uPage,uCol+width);
}

void disp_hz(unsigned char *hz)
{
unsigned char k,j,uPage,uCol,ch_r,ch_w;
uPage = GetPage();
uCol = GetCol();
for(k=0;k<sizeof(GB_16)/sizeof(GB_16[0]);k++)
{
if(hz[0] == GB_16[k].Index[0] && hz[1] == GB_16[k].Index[1])
break;
}

if(CurOffset==1)
{
for(j=0;j<ASC_HZ_WIDTH;j++)
{
SetPageCol(uPage,uCol+j);
ch_w=GB_16[k].Msk[j];
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage+1,uCol);

for(j=0;j<ASC_HZ_WIDTH;j++)
{
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) ch_r=read_LCD(LEFT);
else ch_r=read_LCD(RIGHT);
ch_r&=0xf0;
ch_w=GB_16[k].Msk[ASC_HZ_WIDTH+j]&0x0f;
ch_w|=ch_r;
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage,uCol+ASC_HZ_WIDTH);
}

else //汉字上半部是写半个字节
{
for(j=0;j<ASC_HZ_WIDTH;j++)
{
SetPageCol(uPage,uCol+j);
if(uCol+j<64) ch_r=read_LCD(LEFT);
else ch_r=read_LCD(RIGHT);
ch_r&=0x0f;
ch_w=GB_16[k].Msk[j];
ch_w=ch_w<<4;
ch_w|=ch_r;
SetPageCol(uPage,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage+1,uCol);
for(j=0;j<ASC_HZ_WIDTH;j++)
{
SetPageCol(uPage+1,uCol+j);

ch_r=GB_16[k].Msk[j];
ch_w=GB_16[k].Msk[ASC_HZ_WIDTH+j];
ch_r=ch_r>>4;
ch_w=ch_w<<4;
ch_w|=ch_r;
SetPageCol(uPage+1,uCol+j);
if(uCol+j<64) write_LCD(LEFT,DATA,ch_w);
else write_LCD(RIGHT,DATA,ch_w);
}
SetPageCol(uPage,uCol+ASC_HZ_WIDTH);
}
}

void disp_str(unsigned char *p)
{
unsigned char i=0;
while(p[i]>0)
{
if(p[i] < 128)
{ /* ASCII */
disp_ch(p[i]);
}
else
{ /* 中文 */
disp_hz(&p[i]);
i++;
}
i++;
}
}

/*************************************/
/* 绘点函数 */
/*************************************/
/* XX--(0-128) YY--(0-63) FLAG=1绘点 FLAG=0 清点 */
void pixel(unsigned char xx,unsigned char yy,unsigned char flag)
{
unsigned int y,ch;
ch=yy%8; //余数

y=1;
for(;ch!=0;)
{
y=y*2;
ch--;
}
if(xx<64)
{
set_page_L(yy/8);
set_col_addr_L(xx);
ch=read_LCD(LEFT);
set_col_addr_L(xx);
if(flag)
write_LCD(LEFT,DATA,ch|y);
else
{
y=~y;
ch&=y;
write_LCD(LEFT,DATA,ch|y);
}
}
else
{
set_page_R(yy/8);
set_col_addr_R(xx-64);
ch=read_LCD(RIGHT);
set_col_addr_R(xx-64);
if(flag)
write_LCD(RIGHT,DATA,ch|y);
else
{
y=~y;
ch&=y;
write_LCD(RIGHT,DATA,ch|y);
}
}
}
/*void point(void)
{
uchar x1, y1, y;

x1 = CurCol;
y1 = CurRow;
CurRow = y1 >> 3; //取Y方向分页地址
Rddata(); // get cbyte on screen
y = y1 & 0x07; //字节内位置计算
Wrdata(cbyte | (1 << y)); //画上屏幕 /
CurCol = x1; ///恢复xy坐标 /
CurRow = y1;
} */

/************************************************/
/*画圆。数学方程(X-Ox)^2+(Y-Oy)^2=Rx^2 */
/************************************************/

/*void circle(uchar Ox, uchar Oy, uchar Rx)
{
unsigned int xx, rr, xt, yt, rs;

yt = Rx;
rr = Rx * Rx + 1; //补偿 1 修正方形
rs = (yt + (yt >> 1)) >> 1; //(*0.75)分开1/8圆弧来画
for (xt = 0; xt <= rs; xt++)
{
xx = xt * xt;
while ((yt * yt) > (rr - xx))
yt--;
col = Ox + xt; //第一象限
row=Oy-yt;
point();
col = Ox - xt; //第二象限
point();
row = Oy + yt; //第三象限
point();
col = Ox + xt; //第四象限
point();

// ***************45度镜象画另一半***************

col = Ox + yt; //第一象限
row = Oy - xt;
point();
col = Ox - yt; //第二象限
point();
row = Oy + xt; //第三象限
point();
col = Ox + yt; //第四象限
point();
}
}
*/

/************************************************/
/*画线。任意方向的斜线,直线数学方程 aX+bY=1 */
/************************************************/

/*void Linexy(uchar x0,uchar y0,uchar xt,uchar yt)
{
uchar t;
int xerr = 0, yerr = 0, delta_x, delta_y, distance;
int incx, incy;

delta_x = xt - x0; // 计算坐标增量
delta_y = yt - y0;
col = x0;
row = y0;

if (delta_x > 0)
{
incx = 1; // 水平+方向
}
else if (delta_x == 0 )
{
incx = 0; // 垂直线
}
else
{
incx =- 1; //水平负方向
delta_x =- delta_x;
}

if (delta_y > 0)
{
incy = 1; // 垂直+方向
}
else
if (delta_y == 0)
{
incy = 0; // 水平线
}
else
{
incy =- 1; //垂直-方向
delta_y =- delta_y;
}

if (delta_x > delta_y)
distance = delta_x; //选取基本增量坐标轴
else
distance = delta_y;

for (t = 0; t <= distance + 1; t++)
{ // 画线输出
point(); // 画点
xerr += delta_x;
yerr += delta_y;

if (xerr > distance)
{
xerr -= distance;
col += incx;
}
if (yerr > distance)
{
yerr -= distance;
row += incy;
}
}
}
*/
void Linexy(uchar x0,uchar y0,uchar xt,uchar yt,uchar s)
{
register uchar t;
int xerr=0,yerr=0,delta_x,delta_y,distance;
int incx,incy,uRow,uCol;

delta_x = xt-x0; //计算坐标增量
delta_y = yt-y0;
uRow = x0;
uCol = y0;
if(delta_x>0) incx=1; //设置单步方向
else if( delta_x==0 ) incx=0; //垂直线
else {incx=-1;delta_x=-delta_x;}

if(delta_y>0) incy=1;
else if( delta_y==0 ) incy=0; //水平线
else {incy=-1;delta_y=-delta_y;}

if( delta_x > delta_y ) distance=delta_x; //选取基本增量坐标轴
else distance=delta_y;

for( t=0;t <= distance+1; t++ )
{ //画线输出
pixel(uRow,uCol,s); //画点
xerr += delta_x ;
yerr += delta_y ;

if( xerr > distance )
{
xerr-=distance;
uRow+=incx;
}
if( yerr > distance )
{
yerr-=distance;
uCol+=incy;
}
}
}

/************************************************/
/*画圆。数学方程(X-Ox)^2+(Y-Oy)^2=Rx^2 */
/************************************************/
void circle(uchar Ox,uchar Oy,uchar Rx,uchar s)
{
unsigned int xx,rr,xt,yt,rs,row,col;
yt=Rx;
rr=Rx*Rx+1; //补偿 1 修正方形
rs=(yt+(yt>>1))>>1; //(*0.75)分开1/8圆弧来画
for (xt=0;xt<=rs;xt++)
{
xx=xt*xt;
while ((yt*yt)>(rr-xx))yt--;
row=Ox+xt; //第一象限
col=Oy-yt;
pixel(row,col,s);
row=Ox-xt; //第二象限
pixel(row,col,s);
col=Oy+yt; //第三象限
pixel(row,col,s);
row=Ox+xt; //第四象限
pixel(row,col,s);

/***************45度镜象画另一半***************/

row=Ox+yt; //第一象限
col=Oy-xt;
pixel(row,col,s);
row=Ox-yt; //第二象限
pixel(row,col,s);
col=Oy+xt; //第三象限
pixel(row,col,s);
row=Ox+yt; //第四象限
pixel(row,col,s);
}
}
void delay(int tt)
{
int i;
int j;
while((j++)>1000000)
{
for(i=0;i<tt;i++)
{
NOP();
}
}
}

void main()
{
unsigned int i;
//init_port();//自己加,主要是控制线所在端口为输出
DDRB = 0xff;
init_lcd();

SetRowCol(1,0);
disp_str("液晶显示的第1行");
SetRowCol(2,0);
disp_str("液晶显示的第2行");
SetRowCol(3,0);
disp_str("液晶显示的第3行");
SetRowCol(4,0);
disp_str("液晶显示的第4行");
SetRowCol(5,0);
disp_str("液晶显示的第5行");
//clr_lcd();
//for(i=0;i<64;i++) pixel(127,i,1);
//for(i=0;i<64;i++) pixel(0,i,1);
//for(i=0;i<128;i++) pixel(i,0,1);
//for(i=0;i<128;i++) pixel(i,63,1);
//for(i=0;i<40;i++)
//{
//circle(20,45,i,1); // 画圆
//}
while(1);

}

/**********************************************************************
结束
**********************************************************************/