lcd2222.#1

C8051F310单片机应用程序

//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------

#include <c8051f310.h>                 // SFR declarations
#include <INTRINS.H>
#include <stdio.h>


//-----------------------------------------------------------------------------
// Global CONSTANTS
//-----------------------------------------------------------------------------

#define SYSCLK       22118400          // SYSCLK frequency in Hz

unsigned char xdata discode;//开关显示、光标、闪烁的命令字暂存单元
unsigned long x;
unsigned char  virt_port;
                   
sbit YJDAT = P2^6;                       
sbit YJCLK = P2^7;
sbit LCDRS = P3^3;
sbit LCDE  = P3^4;

//-----------------------------------------------------------------------------
// Function PROTOTYPES
//-----------------------------------------------------------------------------
void PORT1_Init (void);
void Write_COM(unsigned yjcom );
void Write_CHAR(unsigned char yjchar);
void YJ_Init(void);
void YJ_Mode1(void);
void YJ_Mode3(void);
void Write_164(unsigned char input);
//-----------------------------------------------------------------------------
// Global VARIABLES
//-----------------------------------------------------------------------------
unsigned char xdata tab1[16]={0x20,0x20,0x42,0x54,0x20,0x46,0x33,0x31,0x30,0x20,0x56,0x31,0x2e,0x30
,0x20,0x20};
unsigned char xdata Netdata[16]={0x77,0x77,0x77,0x2e,0x78,0x68,0x6c,0x2e,0x63,0x6f,
                                0x6d,0x2e,0x63,0x6e,0x20,0x20}; 

//-----------------------------------------------------------------------------
// MAIN Routine
//-----------------------------------------------------------------------------

void lcd_diplay (void) {
  int i,j,k;

   PORT1_Init ();    // initialize crossbar and GPIO
   YJ_Init();  
   YJ_Init();  

   while (1) {
   

    YJ_Mode3();
     for(i=0;i<100;i++)
    { 
     for(j=0;j<20;j++) 
    { 
    for(k=0;k<240;k++); 
    } 
   }
}
}
//-----------------------------------------------------------------------------
// PORT_Init
//-----------------------------------------------------------------------------
void PORT1_Init (void)
{
    XBR0 = 0x00; // XBAR0: Initial Reset value
    XBR1 = 0x40; // XBAR1: Initial Reset value

    P1MDOUT = 0x7f; // Output configuration for P1 
    P2MDOUT  = 0xff;  // P2口设为推挽方式 // Output configuration for P2 
    P3MDOUT = 0x1f; // Output configuration for P3 

}
//================================================
//写指令代码子程序
//====================================================
void Write_COM(unsigned char yjcom )
{

   for(x=0;x<5000;x++);		//用延时代替查询

   LCDRS=0;
   for(x=0;x<1000;x++);
  //------------------- 
  virt_port = yjcom;
  Write_164(virt_port);
  for(x=0;x<1000;x++);

   LCDE=1;

  for(x=0;x<1000;x++);

   LCDE=0;
  for(x=0;x<1000;x++);
}
//================================================
//写显示数据子程序(单个字符)
void Write_CHAR(unsigned char yjchar)
{
//   int k;
   PORT1_Init ();
   for(x=0;x<5000;x++);		//用延时代替查询

   LCDRS=1;
   for(x=0;x<1000;x++);

  virt_port = yjchar;
  Write_164(virt_port);
  for(x=0;x<1000;x++);
                         
   LCDE=1;               //E=1
   for(x=0;x<1000;x++);                       
   LCDE=0;   
                         //E=0

}
//===========================================
//液晶初始化
void YJ_Init(void)
{
//  int i;

  for(x=0;x<40000;x++);
  LCDRS=0;

 Write_COM(0x38);         //4位数据接口，两行显示5×7点阵字符

 Write_COM(0x06);         //数据读、写操作后，AC自动增一
                          //数据读、写操作，画面不动
 Write_COM(0x0c);         //显示开、光标开、闪烁开

 Write_COM(0x01);         //清屏

}
//=============================================================
//逐字依次输入方式演示程序段
void YJ_Mode1(void)
{
  int i,j;
  Write_COM(0x06); //数据读、写操作后，AC自动增一
      //数据读、写操作，画面不动
  Write_COM(0x80);
  for(j=0;j<250;j++);
  for(i=0;i<12;i++){
  Write_CHAR(tab1[i]);
  for(j=0;j<250;j++);
   };
  Write_COM(0xC0);
  for(j=0;j<250;j++);
  for(i=0;i<12;i++){
  Write_CHAR(tab1[i]);
  for(j=0;j<250;j++);
   };
}
//-------------------------------------------------
void YJ_Mode3(void) 
{
  int i,j,k;
  for(i=0;i<1000;i++);                  //数据读、写操作，画面不动
  for(k=0;k<5000;k++);

  for(i=0;i<16;i++){
  Write_CHAR(tab1[i]);
  for(j=0;j<1000;j++);
  for(k=0;k<1000;k++);
  for(k=0;k<5000;k++);}
                                        //  LCDE=1;
  Write_COM(0xc0);
                                        //  LCDE=0;
                                        //  LCDE=1;
  for(k=0;k<5000;k++);
  for(i=0;i<16;i++){
  Write_CHAR(Netdata[i]);
  for(j=0;j<1000;j++);
  for(k=0;k<1000;k++);
  for(k=0;k<5000;k++);
  };
}

//===========================================================  write_164
void Write_164(unsigned char input)
{
  int i,j;
  for(i=0;i<8;i++)
  { YJCLK=0;
    if(input&0x80)
	   YJDAT=1;
    else 
	   YJDAT=0;
    input<<=1;
	YJCLK=1;
	 for(j=0;j<10;j++)
	 {_nop_();}
    YJCLK=0;
   }
}
//===========================================================