DA显示到12864上.doc

include
#include

#define uchar unsigned char
#define uint unsigned int
typedef struct typFNT_GB16 // 汉字字模数据结构
{
signed char Index[2]; // 汉字内码索引
char Msk[32]; // 点阵码数据
};
/*TS12864A-3 端口定义*/
#define LCD_data P0 //数据口
sbit LCD_RS = P3^5; //寄存器选择输入
sbit LCD_RW = P3^6; //液晶读/写控制
sbit LCD_EN = P3^4; //液晶使能控制
sbit LCD_PSB = P3^7; //串/并方式控制
sbit cs = P3^2;
sbit wela = P2^6;
sbit dula = P2^7;
uchar t0;
uchar code dis[] = "0123456789";
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
//uchar IRDIS[2];
//uchar IRCOM[4];
//void lcd_pos(uchar X,uchar Y); //确定显示位置
delay_50us(uint t)
{
uchar j;
for(;t>0;t--)
for(j=19;j>0;j--);
}
void delay(int ms)
{
while(ms--)
{
uchar i;
for(i=0;i<250;i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
bit lcd_busy()
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0&0x80);
LCD_EN = 0;
return(result);
}

void lcd_wcmd(uchar cmd)
{
while(lcd_busy());
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
_nop_();
_nop_();
P0 = cmd;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_wdat(uchar dat)
{
while(lcd_busy());
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
void lcd_init()
{

LCD_PSB = 1; //并口方式
lcd_wcmd(0x34); //扩充指令操作
delay(5);
lcd_wcmd(0x30); //基本指令操作
delay(5);
lcd_wcmd(0x0C); //显示开，关光标
delay(5);
lcd_wcmd(0x01); //清除LCD的显示内容
delay(5); //延时
}
void main()
{
uchar v;
uchar j,k,m,n;
wela=0;
dula=0;
cs=0;
LCD_RW=0;
delay_50us(2);
LCD_RW=1;
cs=1;
delay_50us(10)
cs=0;
LCD_RW=0;
delay_50us(1);
v=P0;
delay_50us(2);
LCD_RW=1;
cs=1;
j=v/100;
k=v%100;
m=k/10;
n=k%10;
lcd_init();
while(1)
{
uchar i;
lcd_wcmd(0x80);
for(i=0;i<3;i++)
{
if(i==0) lcd_wdat(dis[j]);
else if(i==1) lcd_wdat(dis[m]);
else if(i==2) lcd_wdat(dis[n]);
delay_50us(20);
}
}
}