lcd1602基本驱动函数lcd1602-master.zip

/*---------------------------------------------------- 液晶LCD1602C 使用4条数据线(D4~D7) 编译器：keil 日期: 2021-9-15 20:29:57 目标芯片 : stc15w404as 时钟: 24.0000Mhz 作者：dukou ---------------------------------------------------*/ #include "LCD1602.h" #include "delay.h" void lcd_port(unsigned char num) { a7=num&0x80; a6=num&0x40; a5=num&0x20; a4=num&0x10; } void write_1602(unsigned char cd,dat) //cd=0 写命令 cd=1 写数据 { unsigned char i; LCD_RS=cd; for(i=0;i<2;i++) //循环两次 写完一个数据/命令 { LCD_EN=1; lcd_port(dat); //P1高四位数据不改动 delay_nms(3); //先送高四位数据 再送低四位数据 LCD_EN=0; dat<<=4; //低四位左移到高四位 } } void lcd_init(void) { write_1602(0,2); //设置4位数据接口 write_1602(0,0x28); //显示方式设置 write_1602(0,0x0e); //设置开显示，不显示光标 //write_1602(0,0x06); //默认(0x06)写入新数据后光标右移 屏幕不移动 write_1602(0,0x01); //显示清0，数据指针清0 } void LCD_set_xy( unsigned char x, unsigned char y ) //写地址函数 { unsigned char address; if (y == 0) address = 0x80 + x; else address = 0xc0 + x; write_1602(0,address); } void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s) //列x=0~15,行y=0,1 { LCD_set_xy( X, Y ); //写地址 while (*s) // 写显示字符 { write_1602(1,*s); s ++; } } void LCD_write_char(unsigned char X,unsigned char Y,unsigned char LCD_data) //列x=0~15,行y=0,1 { LCD_set_xy( X, Y ); //写地址 write_1602(1,LCD_data); }