/*
自定义延时子函数 */
void delayms(uchar z) {
int x,y; for(x=z;x>0;x--) for(y=300;y>0;y--); } /*
判断LCD忙信号状态 */ void buys() {
int dat; RW=1; RS=0; do {
P0=0x00; E=1; dat=P0; E=0;
dat=0x80 & dat; } while(!(dat==0x00)); } /*
LCD写指令函数 */
void w_com(uchar com) {
buys(); RW=0; RS=0; E=1; P0=com; E=0;
第 21 页 共 27 页
} /*
LCD写数据函数 */
void w_date(uchar date) {
buys(); RW=0; RS=1; E=1; P0=date; E=0; } /*
LCD选屏函数 */
void select_screen(uchar screen) {
switch(screen) {
case 0: //选择全屏 CS1=0;
CS2=0; break;
case 1: //选择左屏 CS1=0;
CS2=1; break;
case 2: //选择右屏 CS1=1;
CS2=0; break;
case 3: //选择黑屏 CS1=1;
CS2=1;
break; 第 22 页 共 27 页
} } /*
LCD清屏函数：清屏从第一页的第一列开始，总共8页，64列 */
void clear_screen(screen) {
int x,y;
select_screen(screen); //screen:0-选择全屏，1-选择左半屏，2-选择右半屏 for(x=0xb8;x<0xc0;x++) //从0xb8-0xbf,共8页 {
w_com(x);
w_com(0x40); //列的初始地址是0x40 for(y=0;y<64;y++) {
w_date(0x00); } } } /*
LCD显示汉字字库函数 */
void lcd_display_hanzi(uchar screen,uchar page,uchar col,uint mun)
{ //screen:选择屏幕参数，page:选择页参数0-3，col:选择列参数0-3，mun:显示第几个汉字的参数 int a; mun=mun*32; select_screen(screen); w_com(0xb8+(page*2)); w_com(0x40+(col*16)); for ( a=0;a<16;a++) {
w_date(hanzi[mun++]); }
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w_com(0xb8+(page*2)+1); w_com(0x40+(col*16)); for ( a=0;a<16;a++) {
w_date(hanzi[mun++]); } } /*
LCD初始化函数 */
void lcd_init() {
w_com(0x3f); //LCD开显示
w_com(0xc0); //LCD行初始地址，共64行 w_com(0xb8); //LCD页初始地址，共8页 w_com(0x40); //LCD列初始地址，共64列 }
void init() {
EA=1;
EX0=1; IT0=1;
lcd_init(); //LCD初始化
//开CPU总中断
clear_screen(0); //LCD清屏幕 }
void lcd_display_0() {
if(flag==1) {flag=0;clear_screen(0);}
lcd_display_hanzi(1,0,0,0); lcd_display_hanzi(1,0,1,45);
lcd_display_hanzi(1,0,2,1); lcd_display_hanzi(1,0,3,2);
lcd_display_hanzi(2,0,0,3);、
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lcd_display_hanzi(1,1,2,4); lcd_display_hanzi(1,1,3,5); lcd_display_hanzi(2,1,0,6); lcd_display_hanzi(2,1,1,7);
lcd_display_hanzi(1,2,2,8);
lcd_display_hanzi(1,3,2,10); lcd_display_hanzi(1,3,3,11); lcd_display_hanzi(2,3,0,6); lcd_display_hanzi(1,2,3,9); lcd_display_hanzi(2,2,0,6); lcd_display_hanzi(2,2,1,7);
lcd_display_hanzi(2,3,1,7); lcd_display_hanzi(1,3,3,17); }
void lcd_display_1() {
if(flag==1) {flag=0;clear_screen(0);}
lcd_display_hanzi(1,0,0,0);
lcd_display_hanzi(1,0,1,45);
lcd_display_hanzi(1,1,1,1); lcd_display_hanzi(1,1,2,2);
lcd_display_hanzi(1,2,1,46);
lcd_display_hanzi(1,2,2,47); lcd_display_hanzi(1,2,3,48); lcd_display_hanzi(2,2,0,49);
lcd_display_hanzi(1,3,3,50); lcd_display_hanzi(2,3,0,48); lcd_display_hanzi(2,3,2,51); lcd_display_hanzi(2,3,2,52); }
void lcd_display_2() 第 25 页 共 27 页
lcd_display_hanzi(1,1,3,3);