用这个吧，显示汉字直接用PutStr(1,1,"速度");
#include <reg52.h>
#include <intrins.h>
sbit CS =P2^5;//RS
sbit SID=P2^6;//RW
sbit SCK=P2^7;//E
/**************************************************************
//串/并方式控制
/*******************************************************************
常量声明区
********************************************************************/
unsigned char code AC_TABLE[]={ //坐标编码
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
};
/****************************************************************
声明：建议读者先查阅我们提供的12864word文档资料，理解12864定坐标的
方式。
发送一个字节
*****************************************************************/
void SendByte(unsigned char Dbyte)
{
unsigned char i;
for(i=0;i<8;i++)
{
SCK = 0;
Dbyte=Dbyte<<1;
SID = CY;
SCK = 1;
SCK = 0;
}
}
/**********************************************************
接收一个字节
***********************************************************/
unsigned char ReceiveByte(void)
{
unsigned char i,temp1,temp2;
temp1=temp2=0;
for(i=0;i<8;i++)
{
temp1=temp1<<1;
SCK = 0;
SCK = 1;
SCK = 0;
if(SID) temp1++;
}
for(i=0;i<8;i++)
{
temp2=temp2<<1;
SCK = 0;
SCK = 1;
SCK = 0;
if(SID) temp2++;
}
return ((0xf0&temp1)+(0x0f&temp2));
}
/****************************************************************
检查忙状态
******************************************************************/
void CheckBusy( void )
{
do SendByte(0xfc); //11111,RW(1),RS(0),0
while(0x80&ReceiveByte());
}
/******************************************************************
写一个字节的指令
*******************************************************************/
void WriteCommand( unsigned char Cbyte )
{
CS = 1;
CheckBusy();
SendByte(0xf8); //11111,RW(0),RS(0),0
SendByte(0xf0&Cbyte);
SendByte(0xf0&Cbyte<<4);
CS = 0;
}
/*************************************************************
写一个字节的数据
**************************************************************/
void WriteData( unsigned char Dbyte )
{
CS = 1;
CheckBusy();
SendByte(0xfa); //11111,RW(0),RS(1),0
SendByte(0xf0&Dbyte);
SendByte(0xf0&Dbyte<<4);
CS = 0;
}
/******************************************************************
lcd初始化函数
*******************************************************************/
void LcmInit( void )
{
WriteCommand(0x30);
WriteCommand(0x03);
WriteCommand(0x0c);
WriteCommand(0x01);
WriteCommand(0x06);
}
/*******************************************************************************************************
设定光标函数
********************************************************************************************************/
void Location_xy_12864(unsigned char x,unsigned char y)
{
switch(x)
{
case 0:
x=0x80;break;
case 1:
x=0x90;break;
case 2:
x=0x88;break;
case 3:
x=0x98;break;
default:
x=0x80;
}
y=y&0x07;
WriteCommand(0x30);
WriteCommand(y+x);
WriteCommand(y+x);
}
/***********************************************************************************
清除文本
************************************************************************************/
void LcmClearTXT( void )
{
unsigned char i;
WriteCommand(0x30);
WriteCommand(0x80);
for(i=0;i<64;i++)
WriteData(0x20);
Location_xy_12864(0,0);
}
/**************************************************************************************
清除图片
*****************************************************************************************/
/*
void LcmClearBMP( void )
{
unsigned char i,j;
WriteCommand(0x34);
WriteCommand(0x36);
for(i=0;i<32;i++)
{
WriteCommand(0x80|i);
WriteCommand(0x80);
for(j=0;j<32;j++)
WriteData(0);
}
}
*/
//显示温度
/****************************************************************************************
显示字符串
*****************************************************************************************/
void PutStr(unsigned char row,unsigned char col,unsigned char *puts)
{
WriteCommand(0x30);
WriteCommand(AC_TABLE[8*row+col]);
while(*puts != '\0')
{
if(col==8)
{
col=0;
row++;
}
if(row==4) row=0;
WriteCommand(AC_TABLE[8*row+col]);
WriteData(*puts);
puts++;
if(*puts != '\0')
{
WriteData(*puts);
puts++;
col++;
}
}
}
/*
//显示一个四位的数字
void PutNum(unsigned char row,unsigned char col,unsigned int num)
{
WriteCommand(0x30);
WriteCommand(AC_TABLE[8*row+col]);
WriteData((num/1000)+48);
WriteData(((num%1000)/100)+48);
WriteData(((num%100)/10)+48);
WriteData((num%10)+48);
}*/ |
