本帖最后由 大黑鱼 于 2014-8-23 19:27 编辑
#include <reg52.h>
#define RS_CLR RS=0
#define RS_SET RS=1
#define RW_CLR RW=0
#define RW_SET RW=1
#define EN_CLR EN=0
#define EN_SET EN=1
#define DataPort P0
sbit RS = P2^4;
sbit RW = P2^5;
sbit EN = P2^6;
void DelayUs2x(unsigned char t)
{
while(--t);
}
void DelayMs(unsigned char t)
{
while(t--)
{
//延时1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
bit LCD_Check_Busy(void) //判忙函数
{
DataPort= 0xFF;
RS_CLR;
RW_SET;
EN_CLR;
_nop_();
EN_SET;
return (bit)(DataPort & 0x80);
}
void LCD_Write_Com(unsigned char com) //写入指令函数
{
//
DelayMs(5);
RS_CLR;
RW_CLR;
EN_SET;
DataPort= com;
_nop_();
EN_CLR;
}
void LCD_Write_Data(unsigned char Data) //写入数据函数
{
//while(LCD_Check_Busy()); 判忙
DelayMs(5);
RS_SET;
RW_CLR;
EN_SET;
DataPort= Data;
_nop_();
EN_CLR;
}
void LCD_Clear(void) //清屏函数
{
LCD_Write_Com(0x01);
DelayMs(5);
}
void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) //写入字符串函数
{
if (y == 0) //第一行
{
LCD_Write_Com(0x80 + x);
}
else
{
LCD_Write_Com(0xC0 + x); //第二行
}
while (*s)
{
LCD_Write_Data( *s);
s ++;
}
}
void LCD_Write_Char(unsigned char x,unsigned char y,unsigned char Data) //写入字符函数 X第几个小屏
{
if (y == 0)
{
LCD_Write_Com(0x80 + x);
}
else
{
LCD_Write_Com(0xC0 + x);
}
LCD_Write_Data( Data);
}
void LCD_Init(void) //初始化函数
{
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
DelayMs(5);
LCD_Write_Com(0x38);
LCD_Write_Com(0x08);
LCD_Write_Com(0x01);
LCD_Write_Com(0x06);
DelayMs(5);
LCD_Write_Com(0x0C);
}
注:main函数没写