portues软件仿真--LCD12864
proteus 软件仿真之LCD12864(中文显示) 一
大二电子专业小白一名，平时闲来无事在学校老师实验室自学，自学过程中发现一些有困扰到自己的地方，所以特来此记录。一是当作自己学习笔记；二是有幸帮助到有和自己遇到相同问题的童鞋，也是一大善事。因个人水平能力有限，错误之处还请及时纠正。
注：只适合于仿真使用与现实中LCD12864有不同！！！！
以下为proteus 原理图
代码
#include "reg52.h"
#include
#define uchar unsigned char
#define uint unsigned int
#define width 15 /* 显示宽度 */
#define Graphic 1
#define TXT 0
#define LcmLengthDots 128
#define LcmWidthDots 64
sbit REST = P2^0; //复位信号,低电平有效
sbit C_D = P2^1; //L:数据 H:指令
sbit C_E = P2^2; //使能端,低电平有效
sbit R_D = P2^3; //读
sbit W_R = P2^4; //写
/****************************************液晶字库**************************************/
uchar num[] = "0123456789";
typedef struct typFNT_GB16
{
char Mask[60];
};
code struct typFNT_GB16 GB_16[] = /* 汉字取模 */
{
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xD0,0x3F,0xF0,0x04,0xC0,0x7F,0xFC, /* 我,0 */
0x04,0xD0,0x1F,0x60,0x74,0x40,0x04,0xB0,0x4F,0x3E,0x30,0x0C,0x00,0x00,0x00,0x00,},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x1F,0x90,0x0C,0xB0,0x3F,0xFC, /* 爱,1 */
0x27,0xF4,0x23,0x24,0x07,0xC0,0x18,0xC0,0x63,0x3E,0x1C,0x0C,0x00,0x00,0x00,0x00,},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x80,0x39,0x80,0xF9,0xFC,0x1E,0x64, /* 你,2 */
0x19,0x74,0x19,0x78,0x1A,0x6C,0x1C,0x66,0x18,0x60,0x11,0xC0,0x00,0x00,0x00,0x00,},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x80,0x01,0x80,0x3F,0xFC,0x21,0x8C, /* 中,3 */
0x21,0x8C,0x3F,0xFC,0x01,0x80,0x01,0x80,0x01,0x80,0x01,0x00,0x00,0x00,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x3F,0xFC,0x2F,0xEC,0x21,0x8C,
0x27,0xEC,0x21,0xAC,0x2F,0xFC,0x20,0x0C,0x3F,0xFC,0x00,0x00,0x00,0x00,0x00,0x00}, /* 国,4 */
{0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x0C,0x00,0x08,0x00,0x08,0x00,0x08,0x00, /* ！,5 */
0x08,0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x00,0x00,0x08,0x00,0x08,0x00,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x0C,0x00,0x08,0x00,0x08,0x00,0x08,0x00, /* ！,6 */
0x08,0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x00,0x00,0x08,0x00,0x08,0x00,0x00,0x00},
{0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x0C,0x00,0x08,0x00,0x08,0x00,0x08,0x00, /* ！,7 */
0x08,0x00,0x08,0x00,0x08,0x00,0x08,0x00,0x00,0x00,0x08,0x00,0x08,0x00,0x00,0x00},
};
/***************************************液晶字库结束***************************************/
void delay_nms(uint i); /* 延时函数 */
void write_commond(uchar com); /*LCD12864写入8位命令子函数*/
void write_date(uchar dat) ; /*LCD12864写入8位数据子函数*/
void F12864_init(); /*LCD12864 并行初始化子程序*/
void F12864_clear(void); /* LCD12864初始化函数 */
void goto_xy(uchar x,uchar y,uchar mode); /* 设定显示地址 */
void Putchar(uchar x,uchar y,uchar Charbyte); /* 显示一个字符 */
void display_string(uchar x,uchar y,uchar *p); /* 显示字符串 */
void display_num(uchar x,uchar y,uchar z); /* 显示数字 */
void dprintf_hanzi_string_1(struct typFNT_GB16 code *GB_16,uint X_pos,uint Y_pos,uchar j,uchar k);
/* 汉字显示 更改汉字取模 可以更改显示汉字(数组),坐标，坐标,j=k+n (n,显示字的个数,k,从那个字开始) */
void main(void)
{
F12864_init();
F12864_clear();
while(1)
{
dprintf_hanzi_string_1(GB_16,1,16,7,0);
}
}
void delay_nms(uint i)
{
while(i)
i--;
}
/* 并行
* 写命令
*/
void write_commond(uchar com)
{
C_E = 0;
C_D = 1;
R_D = 1;
P0 = com;
W_R = 0; // write
_nop_();
W_R = 1; // disable write
C_E = 1;
C_D = 0;
}
/* 并行->写数据 */
void write_date(uchar dat)
{
C_E = 0;
C_D = 0;
R_D = 1;
P0 = dat;
W_R = 0;
_nop_();
W_R = 1;
C_E = 1;
C_D = 1;
}
/*
* 写一个指令 一个数据
*/
void write_dc(uchar com,uchar dat)
{
write_date(dat);
write_commond(com);
}
/*
* 写一个指令两个数据
*/
void write_ddc(uchar com,uchar dat1,uchar dat2)
{
write_date(dat1);
write_date(dat2);
write_commond(com);
}
/* 并行初始化 */
void F12864_init(void)
{
REST = 0;
delay_nms(2000);
REST = 1;
write_ddc(0x40,0x00,0x00); /* 设置文本显示首地址 */
write_ddc(0x41,128/8,0x00); /* 设置文本显示宽度 */
write_ddc(0x42,0x00,0x08); /* 设置文本显示首地址0x0800 */
write_ddc(0x43,128/8,0x00); /* 设置图形显示宽度 */
write_commond(0xA0); /* 设置光标形状8*8 */
write_commond(0x80); /* 显示方式设置 文本and图形(异或) */
write_commond(0x92); /* 设置光标 */
write_commond(0x9F); /* 显示开关设置,文本开,图形开,光标闪烁关 */
}
/* 清除显示函数 */
void F12864_clear(void)
{
unsigned int i;
write_ddc(0x24,0x00,0x00); /* 设置地址指针从零开始 */
write_commond(0xb0); /* 自动写 */
for(i = 0;i < 128 * 64 ;i++)write_date(0x00); /* 清一屏 */
write_commond(0xb2); /* 自动写结束 */
write_ddc(0x24,0x00,0x00); /* 重置地址指针 */
}
/* 设定显示地址
* mode 1:图形
* 0:汉字
*/
void goto_xy(uchar x,uchar y,uchar mode)
{
uint temp;
temp = 128 / 8 * y + x;
if(mode) //mode = 1为Graphic
{ //图形模式要加上图形区首地址0x0800
temp = temp + 0x0100;
}
write_ddc(0x24,temp & 0xff,temp / 256); //地址指针位置
}
/* 显示一个ASCII码 */
void Putchar(uchar x,uchar y,uchar Charbyte)
{
goto_xy(x,y,TXT);
write_dc(0xC4,Charbyte-32); //数据一次写入
}
void display_string(uchar x,uchar y,uchar *p)
{
while(*p != 0)
{
if(x > 15 ) //超出一行,自动换行
{
x = 0;
y++;
}
Putchar(x,y,*p);
++x;
++p;
}
}
void display_num(uchar x,uchar y,uchar z)
{
uchar z1,z2;
z1 = num[z / 10];
z2 = num[z % 10];
Putchar(x,y,z1);
Putchar(x+1,y,z2);
}
/* 显示一串汉字,j=k+n (n,显示字的个数,k,从那个字开始) */
void dprintf_hanzi_string_1(struct typFNT_GB16 code *GB_16,uint X_pos,uint Y_pos,uchar j,uchar k)
{
unsigned int address;
unsigned char m,n;
while(k < j)
{
m = 0;
address = LcmLengthDots / 8 * Y_pos + X_pos + 0x0800;
for(n = 0;n < 16;n++) //计数值16
{
write_ddc(0x24,(uchar)(address),(uchar)(address>>8)); //设置显示存储器地址
write_dc(0xc0,GB_16[k].Mask[m++]); //写入汉字字模左部
write_dc(0xc0,GB_16[k].Mask[m++]); //写入汉字字模右部
address = address + 128/8; //修改显示存储器地址,显示下一列(共16列)
}
X_pos += 2;
k++;
}
}
仿真后屏幕显示“我爱你中国”
汉字取模使用PCtoLCD2002软件 如下配置
G.Z.W
2019年6月9日