lcd.c

温度控制PWM

#include<reg52.h>
#include <intrins.h>
#include "Lcd.H"
#define uchar unsigned char
#define uint   unsigned int
unsigned char flag;

sbit CS = P2^7;
sbit SID= P2^6;
sbit CLK= P2^5;


uchar code addr[]={ 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 };//DDRAM地址
 
uchar code datshu[]={ 0x30,/*0*/ 0x31,/*1*/0x32,/*2*/0x33,/*3*/	  //数字库：0123456789.
                     	0x34,/*4*/ 0x35,/*5*/0x36,/*6*/0x37,/*7*/
                     	0x38,/*8*/ 0x39,/*9*/0x2e,/*.*/0x41,/*A*/0x56 /*V*/};


/*********************************************************/
/*Header:Lcd.h
/*File Name:Lcd.c 
/*Author: 陈培炜，杨帆
/*Data;2007
/*Function:程序内部调用的函数
/*********************************************************/
void Send(unsigned char senddata);
void WriteCmd( uchar cmd );
void WriteData( uchar Data );

void displayChar( uchar *x_add, uchar *dat );
void HanZiString(uchar x,uchar *p);

void DispOrder(unsigned char x);
void WriteRAM( uchar Data );

void delay(unsigned int t);

/*****************************初始化子程序******************************/
void InitLcd(void)
{

  CS = 1;
  WriteCmd( 0x30 );
  delay( 150 );//延时150us

  WriteCmd(0x30);
  delay( 45 );//延时45us

  WriteCmd( 0x0C );
  delay( 150 );//延时150us
  
  WriteCmd( 0x01 );
  delay( 15000 );//延时12MS
  
  WriteCmd(0x06);
}
/*********************************************/
/*Header:Lcd.h
/*File Name:Lcd.c 
/*Author: 陈培炜，杨帆
/*Data;2007
/*Function:
/*********************************************/

void cls(void)
{
	WriteCmd( 0x01 );
    delay( 15000 );//延时12MS

}

/*****************************延时子程序***************************/
void delay( uint t )
{
  while( t-- );      
}
/*********************************************************** 
/*Header:Lcd.h
/*File Name:Lcd.c 
/*Author: 陈培炜，杨帆
/*Data;2007
/*Function:
***********************************************************/
void DelayUS(unsigned int n)       //N us延时函数
  {
   unsigned int i=0;
   for (i=0;i<n;i++)
       _nop_();
  }
/*********************************************************** 
/*Header:Lcd.h
/*File Name:Lcd.c 
/*Author: 陈培炜，杨帆
/*Data;2007
/*Function:
***********************************************************/
void Send(unsigned char senddata)
{
	unsigned char i;
	for(i=0;i<8;i++)
	{
		if((senddata)&0x80)
		    SID = 1;
		else
			SID = 0;	
		CLK = 1;
		_nop_();
		CLK = 0;
		senddata<<=1;
	}
}


/*******************************写指令子程序***************************/
void WriteCmd( uchar cmd )
{ 	
	Send(0xf8);
	Send(cmd&0xf0);
	Send(cmd<<4);	
	DelayUS(20);
}

/***********************************写数据子程序****************************/
void WriteData(unsigned char Data)
{
	Send(0xfa);
	Send(Data&0xf0);
	Send(Data<<4);
	DelayUS(20);     
}
/***************************************************************/
void WriteRAM( uchar Data )
{
	Send(0xfa);           //11111010
	Send(Data&0xf0);      //xxxx0000
	Send(Data<<4);        //xxxx0000
	delay(20);     
}

/********************显示字符*************************************/
void displayChar( uchar *x_add, uchar *dat )
{
     WriteCmd( *x_add );//1xxx,xxxx 设定DDRAM 7位地址xxx,xxxx到地址计数器AC
     WriteData( *dat );
}

/***************************显示字符串**************************************/

void HanZiString(uchar x,uchar *p)
{	
	uchar ad;
	ad = addr[x];
	WriteCmd(ad);		
	while (*p!='\0')
	{
		WriteRAM(*(p++));
	}
}

/*********************************************************/
/*Header:Lcd.h
/*File Name:Lcd.c 
/*Author: 陈培炜，杨帆
/*Data;2007
/*Function:温度与占空比的显示函数
/*********************************************************/
void disp(unsigned char tempreture,unsigned int high)
{
	unsigned char a,b;
	unsigned int z;	
	HanZiString(0,"温度      ℃");
	a = tempreture/10;
	b = tempreture%10;
	displayChar( &addr[3],&datshu[a] );
	displayChar( &addr[4],&datshu[b] );

	z = high/100;
	a = z/10;
	b = z%10;
	HanZiString(8,"占空比     /100 ");	
	displayChar( &addr[12],&datshu[a] );
	displayChar( &addr[13],&datshu[b] );
}

/*********************************************/
/*
/*	 设定温度范围显示函数
/*********************************************/
void disp2(unsigned char dt,unsigned char ut,unsigned char flag)
{
	unsigned char t,d;
		
	HanZiString(0,"设定温度范围:");
	HanZiString(11,"——");

	if(flag == 0)
	{
		HanZiString(17,"__");
		HanZiString(21,"  ");
	}
	else
	{
	 	HanZiString(17,"  ");	
		HanZiString(21,"__");
	}

	t = dt/10;
	d = dt%10;
	displayChar( &addr[9],&datshu[t] );
	displayChar( &addr[10],&datshu[d] );

	t = ut/10;
	d = ut%10;
	displayChar( &addr[13],&datshu[t] );
	displayChar( &addr[14],&datshu[d] );
}
/*********************************************/
/*********************************************/