LCD1602 4线并口通信源程序

LCD1602 4线并口通信源程序发布时间:2006年6月23日 点击次数:2720 来源: 作者: LCD 1602采用4线并口通信,连接方式是DB4DB7接P1.4-P1.7;RS:P2.7;RW:P2.6EN:P2.5;注意初始化的设置。在万利MedWin 3.0开发环境上调试通过！/* /* 模块功能： 显示内容： creat by /* fenyman/* LCD1602/* test/*creat by: fenyman/*Date: 2006-06-21/*Corporation:SME of Dalian University of Technology/*Version V1.1/*Copyright(C)feyman 2006-2016/*All rigths reserved /*/ #include /*/#define LCDIO P1sbit LCD1602_RS=P27; sbit LCD1602_RW=P26; sbit LCD1602_EN=P25; /*/void LCD_delay(void);void LCD_en_command(unsigned char command);void LCD_en_dat(unsigned char temp);void LCD_set_xy( unsigned char x, unsigned char y );void LCD_write_char( unsigned x,unsigned char y,unsigned char dat);void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s);void LCD_init(void);/*/void delay_nms(unsigned int n);/*/void main(void)LCD_init(); while(1 ) LCD_en_command(0x01); delay_nms(2); LCD_write_string(0,0, create by ); LCD_write_string(0,1, fenyman ); delay_nms(200); LCD_en_command(0x01); delay_nms(2); LCD_write_string(0,0, LCD1602 ); LCD_write_string(0,1, test ); delay_nms(200); /* LCD PART */void LCD_delay(void) unsigned char i;for(i=40;i0;i-) ;/*/ void LCD_en_command(unsigned char command) LCD1602_RS=0; LCD1602_RW=0; LCD1602_EN=0; LCDIO=(command & 0xf0); LCD1602_EN=1; LCD_delay(); LCD1602_EN=0; LCDIO=(command & 0x0f)4; LCD1602_EN=1; LCD_delay(); LCD1602_EN=0;/*/void LCD_en_dat(unsigned char dat) LCD1602_RS=1; LCD1602_RW=0; LCD1602_EN=0; LCDIO=(dat & 0xf0); LCD1602_EN=