ACM-12864汉字液晶显示驱动程序.doc
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//ACM-12864汉字液晶显示驱动程序
sbit p_csa=P2^6;
sbit p_csb=P2^7;
sbit p_gnda=P2^5;
sbit p_gndb=P2^4;
sbit p_di=P2^3;
sbit p_rw=P2^2;
sbit p_e=P2^1;
/*忙判别*/
void lcd_busy(void) {
p_di=0;p_rw=1;P0=0xff;
while (1) {
p_e=1;
if (P00x80) break;
p_e=0;
}
p_e=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=p_rw=0;P0=0x40|x;p_e=1;p_e=0;
lcd_busy();
p_di=p_rw=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;p_rw=0;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;
p_gnda=p_gndb=0;
/*开显示*/
p_e=p_di=p_rw=0;
p_csa=p_csb=0;
p_csa=1;P0=0x3f;p_e=1;p_e=0;p_csa=0;
p_csb=1;P0=0x3f;p_e=1;p_e=0;p_csb=0;
/*0行开始显示*/
p_csa=1;lcd_busy();p_di=p_rw=0;P0=0xc0;p_e=1;p_e=0;p_csa=0;
p_csb=1;lcd_busy();p_di=p_rw=0;P0=0xc0;p_e=1;p_e=0;p_csb=0;
for (y=0;y8;y++) {
for (x=0;x128;x++) lw(x,y,0);
}
}
unsigned char code asc[]={
0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x38,0xfc,0xfc,0x38,0x0,0x0,0x0,0x0,0x0,0xd,0xd,0x0,0x0,0x0,
0x0,0xe,0x1e,0x0,0x0,0x1e,0xe,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x20,0xf8,0xf8,0x20,0xf8,0xf8,0x20,0x0,0x2,0xf,0xf,0x2,0xf,0xf,0x2,0x0,
0x38,0x7c,0x44,0x47,0x47,0xcc,0x98,0x0,0x6,0xc,0x8,0x38,0x38,0xf,0x7,0x0,
0x30,0x30,0x0,0x80,0xc0,0x60,0x30,0x0,0xc,0x6,0x3,0x1,0x0,0xc,0xc,0x0,
0x80,0xd8,0x7c,0xe4,0xbc,0xd8,0x40,0x0,0x7,0xf,0x8,0x8,0x7,0xf,0x8,0x0,
0x0,0x10,0x1e,0xe,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0xf0,0xf8,0xc,0x4,0x0,0x0,0x0,0x0,0x3,0x7,0xc,0x8,0x0,0x0,
0x0,0x0,0x4,0xc,0xf8,0xf0,0x0,0x0,0x0,0x0,0x8,0xc,0x7,0x3,0x0,0x0,
0x80,0xa0,0xe0,0xc0,0xc0,0xe0,0xa0,0x80,0x0,0x2,0x3,0x1,0x1,0x3,0x2,0x0,
0x0,0x80,0x80,0xe0,0xe0,0x80,0x80,0x0,0x0,0x0,0x0,0x3,0x3,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x10,0x1e,0xe,0x0,0x0,0x0,
0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x0,0x0,0x0,0x0,0x0,0
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