ACM-12864汉字液晶显示驱动程序_免费下载.doc

/ACM-12864汉字液晶显示驱动程序sbit p_csa=P26;sbit p_csb=P27;sbit p_gnda=P25;sbit p_gndb=P24;sbit p_di=P23;sbit p_rw=P22;sbit p_e=P21;/*忙判别*/void lcd_busy(void) p_di=0;p_rw=1;P0=0xff;while (1) p_e=1;if (P0=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 disablevoid 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 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