lcd.c

读SD卡用SST单片机与tlc5620播放音乐程序

#include "lcd.h"

/*************************************************************************************************/
//内部函数
void CheckBusy (void)
{
  P1=0xff;
  LcdRs=0;
  LcdRw=1;
  LcdE=1;
  while(Busy==1);
  LcdE =0;
}

unsigned char ReadLcd ()	//写操作
{
  unsigned char Rddata;
  CheckBusy ();
  LcdRs=1;   //数据
  LcdRw=1;   //读
  LcdE=1;
  Rddata=LCD_DATA; 
  LcdE=0;
  return Rddata;
}

void WriteLcd (unsigned char dat_type,unsigned char content)	//写操作
{
  CheckBusy ();
  if(dat_type)
   {
    LcdRs=1;   //数据
    LcdRw=0;   //写
   }
  else 
   {
    LcdRs=0;   //指令
    LcdRw=0;   //写
   }
  LCD_DATA=content;  
  LcdE=1;
  LcdE=0;
}

//用户函数
void Initlcd (void)												//初始化LCD
{		

   WriteLcd (LCDCOMM,0x30);  //基本指令动作  
   WriteLcd (LCDCOMM,0x01);  //清屏，地址指针指向00 
   WriteLcd (LCDCOMM,0x06);  //光标的移动方向
   WriteLcd (LCDCOMM,0x0c);  //开显示，关游标

}

void ClearRam (void)									//清RAM
{
  WriteLcd (LCDCOMM,0x30);
  WriteLcd (LCDCOMM,0x01);
}

void ChnPrintf (unsigned char x,unsigned char y,unsigned char code *chn)						//显示汉字或字符
{
  xdata unsigned char i,len;
  WriteLcd (LCDCOMM,0x30);
  for(len=0;*chn!='\0';chn++,len++);
  	chn-=len;
  switch(x)
  	{ 	
  	case 1:
    	WriteLcd (LCDCOMM,0x80+y-1);		
		for (i=0;i<16-2*(y-1)&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x90);
		for (;i<16-2*(y-1)+16&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x88);
		for (;i<16-2*(y-1)+32&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x98);
		for (;i<16-2*(y-1)+48&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
  	break;
	case 2:
		WriteLcd (LCDCOMM,0x90+y-1);		
		for (i=0;i<16-2*(y-1)&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x88);
		for (;i<16-2*(y-1)+16&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x98);
		for (;i<16-2*(y-1)+32&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
    	break;
	case 3:
		WriteLcd (LCDCOMM,0x88+y-1);		
		for (i=0;i<16-2*(y-1)&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
		WriteLcd (LCDCOMM,0x98);
		for (;i<16-2*(y-1)+16&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
    	break;
	case 4:
		WriteLcd (LCDCOMM,0x98+y-1);		
		for (i=0;i<16-2*(y-1)&&i<len;i++)
   	 		 WriteLcd (LCDDAT,chn[i]);
    	break;  
  }
}
void ImgPrintf (unsigned char x,unsigned char y,unsigned char Row,unsigned char Lis,unsigned char code img[][2])						//显示图形
{
	xdata unsigned char i,j;
 	for(i=0;i<Row;i++)
    	for(j=0;j<Lis;j++)
		{
			if(y+i>32) 
			{
    			WriteLcd (LCDCOMM,0x34);
  				WriteLcd (LCDCOMM,Y+y+i-33);
  				WriteLcd (LCDCOMM,X+x+j+7);
  			}
			else
  			{
				WriteLcd (LCDCOMM,0x34);
  				WriteLcd (LCDCOMM,Y+y+i-1);
  				WriteLcd (LCDCOMM,X+x+j-1);
			}
  			WriteLcd (LCDCOMM,0x30);
  			WriteLcd (LCDDAT,img[i*Lis+j][0]);
  			WriteLcd (LCDDAT,img[i*Lis+j][1]);
		}
	WriteLcd (LCDCOMM,0x36);
}

void DotPrintf (unsigned char data1,unsigned char data2)		//显示点阵
{
  xdata unsigned char i,j,k,x;
  x=X;
  for(k=0;k<2;k++)
  {
    for(j=0;j<16;j++)
    {
      for(i=0;i<8;i++)
      {
        WriteLcd (LCDCOMM,0x34);
        WriteLcd (LCDCOMM,Y+j*2);
        WriteLcd (LCDCOMM,x+i);
        WriteLcd (LCDCOMM,0x30);
        WriteLcd (LCDDAT,data1);
        WriteLcd (LCDDAT,data1);
      }
      for(i=0;i<8;i++)
      {
        WriteLcd (LCDCOMM,0x34);
        WriteLcd (LCDCOMM,Y+j*2+1);
        WriteLcd (LCDCOMM,x+i);
        WriteLcd (LCDCOMM,0x30);
        WriteLcd (LCDDAT,data2);
        WriteLcd (LCDDAT,data2);
      }
    }
    x=XX;
  }
  WriteLcd (LCDCOMM,0x36);
}

void DisPrintf (unsigned char data1,unsigned char data2,unsigned char x0,unsigned char y0,unsigned char x1,unsigned char yl)				//反白显示
{
  xdata unsigned char i,j;
  for(j=0;j<yl;j++)
  {
    for(i=0;i<x1;i++)
    {
      WriteLcd (LCDCOMM,0x34);							//扩充指令集，绘图关
      WriteLcd (LCDCOMM,y0+j);
      WriteLcd (LCDCOMM,x0+i);
      WriteLcd (LCDCOMM,0x30);							//基本指令集
      WriteLcd (LCDDAT,data1);
      WriteLcd (LCDDAT,data2);
    }
  }
  WriteLcd (LCDCOMM,0x36);								//扩充指令集，绘图开
}


void StdIntPrintf(unsigned char x,unsigned char y,signed int i)//将一个整数直接在屏幕上打印出来,可以显示的数据的范围：-32767到+32767
{
	unsigned char code StdNumber[11][3]={"0","1","2","3","4","5","6","7","8","9","10"};
	xdata unsigned char m[5];
	xdata unsigned char n=0,fushu=0;
	if (i<0)
	{
		i=-i;
		fushu=1;
	}
	while(i!=0)
	{
		m[n]=i%10;
		i/=10;
		n++;
	}
	if (fushu)
	{
		ChnPrintf(x,y,"-");
		y++;
	}
		for(i=0;i<n;i++)
			ChnPrintf(x,y+i,StdNumber[m[n-i-1]]);
}

void PixelPrintf (unsigned char x,unsigned char y,unsigned char real)						//显示图形
{
	xdata unsigned char LcdData0,LcdData1,LcdData2=0x80,LcdData3=0x80;
	LcdData2=0x80;
	LcdData3=0x80;
	if(x%16==0)
	{
		LcdData3>>=7;
		LcdData2=0x00;
	}
	else if(x%16<8)
	{
		LcdData2>>=x%16-1;
		LcdData3=0x00;
	}
	else if(x%8==0)
	{
		LcdData2>>=7;
		LcdData3=0x00;
	}
	else
	{	
		LcdData3>>=(x%16-9);
		LcdData2=0x00;
	}
	if(y>32)
	{
		y-=32;
		x+=128;
	}
	WriteLcd (LCDCOMM,0x34);
  	WriteLcd (LCDCOMM,Y+y-1);
  	WriteLcd (LCDCOMM,X+(x-1)/16);
	WriteLcd (LCDCOMM,0x30);
	LcdData0=ReadLcd();
	LcdData0=ReadLcd();
	LcdData1=ReadLcd();
	WriteLcd (LCDCOMM,0x34);
  	WriteLcd (LCDCOMM,Y+y-1);
  	WriteLcd (LCDCOMM,X+(x-1)/16);	
  	WriteLcd (LCDCOMM,0x30);
	if(real)
	{
  		WriteLcd (LCDDAT,LcdData0|LcdData2);
  		WriteLcd (LCDDAT,LcdData1|LcdData3);
	}
	else
	{
		LcdData2^=0xff;
		LcdData3^=0xff;
  		WriteLcd (LCDDAT,LcdData0&(LcdData2));
  		WriteLcd (LCDDAT,LcdData1&(LcdData3));
	}
	WriteLcd (LCDCOMM,0x36);
	
}