1602.c

基于51单片机设计的实时温度程序

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/*※※※※※※※※※※※※※系统主文※※※※※※※※※※※※※※*/                   
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#include <at89x51.h>	
/////////////////////////////////
#define LCM_RW P1_1            //定义LCD引脚
#define LCM_RS P1_2
#define LCM_E  P1_0
#define LCM_Data P2
////////////////////////////////
#define Busy 0x80             //用检测LCM状态
#define uchar unsigned char
void WriteDataLCM(unsigned char WDLCM);//
void WriteCommandLCM(unsigned char WCLCM,BuysC);//
unsigned char ReadDataLCM(void);//
unsigned char ReadStatusLCM(void);//
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);//
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);//
void display(uchar sec,uchar min,uchar hrs,uchar dte,uchar mon,uchar day,uchar yr);//
void LCMInit(void);//
void Delay5Ms(void);//
void Delay400Ms(void);//
void disp_clk_regs(void);
void Locatexy(char x,char y);//
///////////////////////////////
void displaylistchars_wo(uchar x,uchar y,uchar *zp);

void gundongzm();		//滚动字幕

void ddram_a_z(void);//置DDRAM字符lczhu
void self_definechar(uchar fst_loc,uchar *a);		// 自定义
void display_self(uchar x,uchar y,uchar num);		//自定义
uchar fst_loc[8]={64,72,80,88,96,104,112,120};
uchar self_char[8]={7,5,7};
//////////////////////////////////////////////////
//写数据//////////////////////////////////////////////////////////////////////////////////
void WriteDataLCM(unsigned char WDLCM)//
{
ReadStatusLCM(); //检测忙
LCM_Data = WDLCM;
LCM_RS = 1;
LCM_RW = 0;
LCM_E = 0; //若晶振速度太高可以在这后加小的延时
LCM_E = 0; //延时
LCM_E = 1;
}

//写指令///////////////////////////////////////////////////////////////////////////////////
void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测//
{
if (BuysC) ReadStatusLCM(); //根据需要检测忙
LCM_Data = WCLCM;
LCM_RS = 0;
LCM_RW = 0; 
LCM_E = 0;
LCM_E = 0;
LCM_E = 1; 
}

///////////////////////读数据//////////////////////////////////////////////////////////////
unsigned char ReadDataLCM(void)//
{
LCM_RS = 1; 
LCM_RW = 1;
LCM_E = 0;
LCM_E = 0;
LCM_E = 1;
return(LCM_Data);
}

////////////////////////读状态.////////////////////////////////////////////////////////////
unsigned char ReadStatusLCM(void)//
{
LCM_Data = 0xFF; 
LCM_RS = 0;
LCM_RW = 1;
LCM_E = 0;
LCM_E = 0;
LCM_E = 1;
while (LCM_Data & Busy); //检测忙信号
return(LCM_Data);
}

///////////////////////&&&LCM初始化&&&/////////////////////////////////////////////////////
void LCMInit(void) //
{
LCM_Data = 0;
WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
Delay5Ms(); 
WriteCommandLCM(0x38,0);
Delay5Ms(); 
WriteCommandLCM(0x38,0);
Delay5Ms(); 

WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
WriteCommandLCM(0x08,1); //关闭显示
WriteCommandLCM(0x01,1); //显示清屏
WriteCommandLCM(0x06,1); // 显示光标移动设置
WriteCommandLCM(0x0f,1); // 显示开及光标设置
}
/////////////////////////确定光标位置//////////////////////////////////////////
void Locatexy(char x,char y)//
{ char temp;
  temp=x&0xf;
  y&=0x1;
  if(y)
    temp|=0x40;
  temp|=0x80;
  WriteCommandLCM(temp,0);
}
////////////////////////按指定位置显示一个字符//////////////////////////////////
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)//
{
Y &= 0x1;
X &= 0xF;              //X不能大于15，Y不能大于1
if (Y) X |= 0x40;      //显示第二行地址码+0x40;
X |= 0x80;             //算出指令码
WriteCommandLCM(X, 0); //不检测忙信号，发送地址码
WriteDataLCM(DData);
}

///////////////////////按指定位置显示一串字符////////////////////////////////////
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)//
{
unsigned char ListLength;
ListLength = 0;
Y &= 0x1;
X &= 0xF;                      //X不能大于15，Y不能大于1
while (DData[ListLength]>0x20) //若到达字串尾则退出
{
if (X <= 0xF)                  //X小于0xF
{
DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
ListLength++;
X++;
}
}
}

//////////////////////5ms延时////////////////////////////////////////////////////
void Delay5Ms(void)//
{
unsigned int TempCyc = 3552;
while(TempCyc--);
}

//////////////////////////400ms延时//////////////////////////////////////////////
void Delay400Ms(void)//
{
unsigned char TempCycA = 5;
unsigned int TempCycB;
while(TempCycA--)
{
TempCycB=5269;
while(TempCycB--);
};
}

/////////////////////////////////自定义字符/////////////////////////////////
void self_definechar(uchar fst_loc,uchar *a)		
{
	uchar i,k;
	for (i=0;i<8;i++,fst_loc++)
	{
		k=a[i];
		WriteCommandLCM(fst_loc,1);		//置CGRAM地址
		WriteDataLCM(k);
	}
}
////////////////显示自定义字符////////////////////////////
void display_self(uchar x,uchar y,uchar num)
{
	Locatexy(x,y);
	WriteDataLCM(num);
}

//////////////////////////////////////////////////

///////////////////////滚动字幕///////////////////////
void gundongzm()
{
	while(1)
	{
		Delay400Ms();
		Delay400Ms();
		WriteCommandLCM(0x18,1);
		WriteCommandLCM(0x0c, 0); //不显示光标

	}
}
/////////////////////////////////////////////////

///////////////////显示字符串 自定义/////////////////
void displaylistchars_wo(uchar x,uchar y,uchar *zp)
{
	unsigned char i,j=0,k;
	if(y)i=x+0x80+64;
	else i=x+0x80;
	for(;zp[j]!=0xff;j++,i++)
	{
		k=zp[j];
		WriteCommandLCM(i, 1); //不检测忙信号，发送地址码
		WriteDataLCM(k);
	}
}