STC89C51的LCD1602驱动程序.rar_bearl1c_lcd1602_reason1j2_stc12c5a60s2_

#include "lcd1602.h" /*************宏定义***************/ #define Busy 0x80 //用于检测LCD状态字中的Busy标识 void busy_check(void) { DBPort = 0xFF; LcdEn = 0; LcdRs = 0; LcdRw = 1; LcdEn = 1; while (DBPort & Busy); LcdEn = 0; } /*-------------------------------------------------------------------------------------- -函数名称:void LCD_Write_Data(uchar dat) ---------------------------------------------------------------------------------------- -函数功能:写数据 -入口参数:数据标识 -出口参数:无 ---------------------------------------------------------------------------------------*/ void LCD_Write_Data(uchar dat) { busy_check(); //检测忙 DBPort = dat; LcdRs = 1; LcdRw = 0; LcdEn = 1; LcdEn = 0; } /*-------------------------------------------------------------------------------------- -函数名称:void Write_com(uchar cmd) ---------------------------------------------------------------------------------------- -函数功能:写命令 -入口参数:命令标识 -出口参数:无 ---------------------------------------------------------------------------------------*/ void LCD_Write_COM(uchar cmd) { busy_check(); DBPort = cmd; LcdRs = 0; LcdRw = 0; LcdEn = 1; LcdEn = 0; } /*-------------------------------------------------------------------------------------- -函数名称:void LCD_Initial(void) ---------------------------------------------------------------------------------------- -函数功能:lcd初始化,初始化为8位并口模式 -入口参数:无 -出口参数:无 ---------------------------------------------------------------------------------------*/ void LCD_Initial(void) { LCD_Write_COM(LCD_INIT); //显示模式 LCD_Write_COM(LCD_SHOW|LCD_NO_CURSOR|LCD_NO_FLASH); //开显示，无光标，不闪动 LCD_Write_COM(LCD_AC_UP|LCD_AC_NO_MOVE); //光标超界不移动且每次自增1 LCD_Write_COM(LCD_CLEAR_SCREEN); //清屏 } /*-------------------------------------------------------------------------------------- -函数名称:void LCD_ShowString(uchar row,uchar column,uchar *str) ---------------------------------------------------------------------------------------- -函数功能:lcd显示字符串函数 -入口参数:row:行,column:列,*str:字符串 -出口参数:无 ---------------------------------------------------------------------------------------*/ void LCD_ShowString(uchar row,uchar column,uchar *str) { uint i = 0; if(row==0) LCD_Write_COM(0x80|column); if(row==1) LCD_Write_COM(0x80|(column+0x40)); while(str[i] != '\0') { LCD_Write_Data(str[i]); i++; } } /***************************************************************************************** *函数名称:void LCD_ShowNum(uchar row,uchar column,int num) ****************************************************************************************** *函数功能:LCD显示一个三位以内的整数 *入口参数:row:行,column:列,num:整数 *出口参数:无 ******************************************************************************************/ void LCD_ShowNum(uchar row,uchar column,int num) { if(row==0) LCD_Write_COM(0x80|column); if(row==1) LCD_Write_COM(0x80|(column+0x40)); LCD_Write_Data(num/100 + 48); LCD_Write_Data((num/10)%10 + 48); LCD_Write_Data(num % 10 + 48); } /***************************************************************************************** *函数名称:void LCD_Showchar(uchar row,uchar column,uchar x) ****************************************************************************************** *函数功能:LCD显示一个三位以内的整数 *入口参数:row:行,column:列,x:字符 *出口参数:无 ******************************************************************************************/ void LCD_Showchar(uchar row,uchar column,uchar x) { if(row==0) LCD_Write_COM(0x80|column); if(row==1) LCD_Write_COM(0x80|(column+0x40)); LCD_Write_Data(x); }