lcd12864.c.new

单片机密码-24c01-12864-4x4按键扫描 初始密码是123456,按#确认 进入后,按*修改密码

#include <REG52.H>
#include "LCD12864.h"
#include "ZK.h"





/*忙判别*/
void lcd_busy(void)
{
    p_di=0;p_rw=1;P0=0xff;
    while(1)
    {
        p_e=1;
        if(P0<0x80) break;
        p_e=0;
    } 
    p_e=0;
    p_rw=0;
}

/*设置xy*/
void set_xy(unsigned char x,unsigned char y)
{
    if (x>=64) 
    {
        p_csa=0;p_csb=1;
    }
    else 
    {
        p_csb=0;p_csa=1;
    }
    lcd_busy();
    p_di=0;P0=0x40|x;p_e=1;p_e=0;
    lcd_busy();
    p_di=0;P0=0xb8|y;p_e=1;p_e=0;
    P0=0xff;
}

void lw(unsigned char x,unsigned char y,unsigned char dd)
{
    set_xy(x,y);
    lcd_busy();p_di=1;P0=dd;p_e=1;p_e=0;
    P0=0xff;
}

/*显示初始化*/
#pragma disable
void lcd_init(void)
{
    unsigned char x,y;
    
    /*开显示*/
    p_e=p_di=0;
    p_csa=p_csb=0;
    p_csa=1;lcd_busy();P0=0x3f;p_e=1;p_e=0;p_csa=0;
    p_csb=1;lcd_busy();P0=0x3f;p_e=1;p_e=0;p_csb=0;
    /*0行开始显示*/
    p_csa=1;lcd_busy();p_di=0;P0=0xc0;p_e=1;p_e=0;p_csa=0;
    p_csb=1;lcd_busy();p_di=0;P0=0xc0;p_e=1;p_e=0;p_csb=0;
    for (y=0;y<8;y++)
    {
        for (x=0;x<128;x++) lw(x,y,0);
    }
}


//显示汉字，fb==1:反白显示
void dh(unsigned char x,unsigned char y,unsigned char n,unsigned char fb)
{
    unsigned char i,dd;
    for (i=0;i<16;i++)
    {
        dd=hz[n].Msk[i];
        if (fb) dd=255-dd;
        lw(x*8+i,y,dd);
        dd=hz[n].Msk[i+16];
        if (fb) dd=255-dd;
        lw(x*8+i,y+1,dd);
    }
}

//显示字符，fb==1:反白显示
void da(unsigned char x,unsigned char y,unsigned char n,unsigned char fb)
{
    unsigned char i,dd;
    n-=32;
    if (n>128) n=0;
    if (fb) dd=255; else dd=0; 
    lw(x*8,y,dd);
    lw(x*8,y+1,dd);
    for (i=0;i<8;i++)
    {
        dd=asc[i+n*16];
        if (fb) dd=255-dd; 
        lw(x*8+i+1,y,dd);
        dd=asc[i+n*16+8];
        if (fb) dd=255-dd; 
        lw(x*8+i+1,y+1,dd);
    }
}

void print_str(unsigned char x,unsigned char y,char *str,unsigned char fb)
{
    unsigned char c1,c2,i,j;
    
    j=0;			  //字符串是最后一位是0结尾?
    while(str[j])	  //如果不是最后一位则进入循环
    {
        c1=str[j];
        if(c1>128)
        {
            c2=str[j+1];
            for(i=0;i<HZMAX;i++)
            {
                if(c1==hz[i].Index[0] && c2==hz[i].Index[1])
                {
                    break;
                }
            }
            if(i<HZMAX)
            {
                /* Found HZ */
                dh(j+x,y,i,fb);
            }
            else
            {
                /* Not Found HZ */
                dh(j+x,y,0,0);
            }
            j+=2;
        }
        else
        {
            da(x+j,y,c1,fb);
            j++;	
        }
    }
}