串口12864.c

51单片机液晶12864驱动 51单片机液晶12864驱动 51单片机液晶12864驱动

#include <reg52.h>

#define uint  unsigned int
#define uchar unsigned char
#define x1    0x80
#define x2    0x88
#define y     0x80
#define comm  0
#define dat   1

sbit cs		= P3^0;
sbit std	= P3^1;	   //数据口
sbit sclk   = P3^2;
sbit psb    = P3^3;   //H=并口; L=串口;
sbit rst    = P3^5;   //Reset Signal 低电平有效

void wr_lcd (uchar dat_comm,uchar content);
void delay7(uint us);
uchar code tab1[]={
"温度            "

};
/*--------------显示点阵----------------*/
void lat_disp (uchar data1,uchar data2)
{
  uchar i,j,k,x;
  x=x1;
  for(k=0;k<2;k++)
  {
    for(j=0;j<16;j++)
    {
      for(i=0;i<8;i++)
      {
        wr_lcd (comm,0x34);
        wr_lcd (comm,y+j*2);
        wr_lcd (comm,x+i);
        wr_lcd (comm,0x30);
        wr_lcd (dat,data1);
        wr_lcd (dat,data1);
      }
      for(i=0;i<8;i++)
      {
        wr_lcd (comm,0x34);
        wr_lcd (comm,y+j*2+1);
        wr_lcd (comm,x+i);
        wr_lcd (comm,0x30);
        wr_lcd (dat,data2);
        wr_lcd (dat,data2);
      }
    }
    x=x2;
  }
  wr_lcd (comm,0x36);
}
 /*---------------显示汉字或字符----------------*/
void chn_disp (uchar code *chn)
{
  uchar i,j;
  wr_lcd (comm,0x30);
  wr_lcd (comm,0x80);
  for (j=0;j<1;j++)
  {
    for (i=0;i<16;i++)
    wr_lcd (dat,chn[j*16+i]);
  }
}

/*------------------初始化-----------------*/
void init_lcd (void)
{
  rst=1;
  psb=0;
  wr_lcd (comm,0x30);  /*30---基本指令动作*/   
  wr_lcd (comm,0x01);  /*清屏，地址指针指向00H*/
  wr_lcd (comm,0x80); //不显示光标
  delay7(100);

  lat_disp (0x00,0x00);
  chn_disp(tab1);
}


void gotoxy(unsigned char y5, unsigned char x5)	//
{
	if(y5==1)
		wr_lcd(0,0x80|x5);
	if(y5==2)
        wr_lcd(0,0x90|x5);
	if(y5==3)
		wr_lcd(0,(0x80|x5)+8);
	if(y5==4)
        wr_lcd(0,(0x90|x5)+8);
}
//**********************************
//液晶显示字符串程序
//**********************************
void print(uchar *str)
{
	while(*str!='\0')
	{
		wr_lcd(1,*str);
		str++;
	}
}

/*--------------清DDRAM------------------*/
void clrram (void)
{
  wr_lcd (comm,0x30);
  wr_lcd (comm,0x01);
  delay7(180);
}
/*---------------------------------------*/
void wr_lcd (uchar dat_comm,uchar content)
{
  uchar a,i,j;
  delay7(50);
  a=content;
  cs=1;
  sclk=0;
  std=1;
  for(i=0;i<5;i++)
  {
    sclk=1;
    sclk=0;
  }
  std=0;
  sclk=1;
  sclk=0;
  if(dat_comm)
    std=1;   //data
  else
    std=0;   //command
  sclk=1;
  sclk=0;
  std=0;
  sclk=1;
  sclk=0;
  for(j=0;j<2;j++)
  {
    for(i=0;i<4;i++)
    {
      a=a<<1;
      std=CY;
      sclk=1;
      sclk=0;
    }
    std=0;
    for(i=0;i<4;i++)
    {
      sclk=1;
      sclk=0;
    }
  }
}
/*-----------------------------------*/
void delay7(uint us)   //delay time
{
  while(us--);
}
void delay1 (uint ms)
{
  uint i,j;
  for(i=0;i<ms;i++)
  for(j=0;j<15;j++)
  delay7(1);
}
//当data1=0xff,data2=0xff时,在x0,y0处反白显示16xl*yl.
void con_disp (uchar data1,uchar data2,uchar x0,uchar y0,uchar xl,uchar yl)
{
  uchar i,j;
  for(j=0;j<yl;j++)
  {
    for(i=0;i<xl;i++)
    {
      wr_lcd (comm,0x34);
      wr_lcd (comm,y0+j);
      wr_lcd (comm,x0+i);
      wr_lcd (comm,0x30);
      wr_lcd (dat,data1);
      wr_lcd (dat,data2);
    }
  }
  wr_lcd (comm,0x36);
}
/*------------------主程序--------------------*/
void main ()
{

  init_lcd ();
    gotoxy(1,0);   
  print("时间 2009-03-10");
  gotoxy(2,6);
  print("temp");

  gotoxy(2,0);
  print("温度TT");


  gotoxy(3,0);
  print("电子 ****");
  gotoxy(4,0);
  print("温度#####");
   // con_disp (0xff,0xff,0x80,0x80,8,16);   //第1行反白显示
   // con_disp (0xff,0xff,0x80,0x90,8,16);//第2行反白显示
   //con_disp (0xff,0xff,0x98,0x80,8,16);//第3行反白显示
  //con_disp (0xff,0xff,0x98,0x90,8,16);//第4行反白显示
  delay1 (8000);
  //clrram();        //清屏函数
  while (1)
  {

  }
}