lcd.c

数控系统的模拟系统,用SSTC51仿真单片机,仿真数控机床切割,能执行数控机床代码.

  //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);
}

//读LCDRAM
unsigned char ReadLCM(void)
{ 
   ReadStatusLCM();
  LCM_RS = 1;
  LCM_RW = 1;
  LCM_E = 1;
  i |= 0x40; //当要显示第二行时地址码+0x40;
i|= 0x80; //算出指令码
WriteCommandLCM(i, 1); //这里不检测忙信号，发送地址码
  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(0x0C,1); /* 显示光标移动设置*/
WriteCommandLCM(0x06,1); /* 显示开及光标设置*/

}

//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; //限制X不能大于15，Y不能大于1
if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
X |= 0x80; //算出指令码
WriteCommandLCM(X, 1); //这里不检测忙信号，发送地址码
WriteDataLCM(DData);
}



//5ms延时
void Delay5Ms(void)
{
unsigned int TempCyc = 5552;
while(TempCyc--);
}



//显示字符串显示
void Lcd_print(unsigned char DData[30])
{
unsigned char ListLength=0;
unsigned char X=0;
unsigned char Y=0;
WriteCommandLCM(0x01,1);
  Y=0;
  for(X=0;X<=15;X++)
   {
   if(DData[ListLength]<0x20){ goto a;}
   DisplayOneChar(X, Y, DData[ListLength]);
    ListLength++;
   }
 Y=1;
  for(X=0;X<=15;X++)
  {
   if(DData[ListLength]<0x20){goto a;}
   DisplayOneChar(X, Y, DData[ListLength]);
   ListLength++;
   }
a:Y=0;
} 

//指定位置开始显示N个字符
 
 void Lcd_print1(unsigned char h,unsigned char s,unsigned char DData[15])
{
unsigned char ListLength=0;
unsigned char X=0X00;
unsigned char Y=h;
for(X=s;X<=15;X++)
  {
   if(DData[ListLength]<0x20){goto a;}
   DisplayOneChar(X, Y, DData[ListLength]);
   ListLength++;
    // if(ListLength==16){goto a;}
  WriteCommandLCM(0x06,1);
   }
 a:Y=0;
 } 
//跳到LCD的某个坐标点
void LocateXY( char posx,char posy)
 {

unsigned char temp;

	temp = posx & 0xf;
	posy &= 0x1;
	if ( posy )temp |= 0x40;
	temp |= 0x80;
	 WriteCommandLCM(temp,0);
} 	 
//清屏
void  Clear_LCD(void)
{
WriteCommandLCM(0x01,1); 
}


#ifdef  T2
unsigned char Interrupt_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);
}
 //写数据
void Interrupt_WriteDataLCM(unsigned char WDLCM)
{
Interrupt_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 Interrupt_WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
{
if (BuysC) Interrupt_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; 
}

void  Interrupt_DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) 
{
Y &= 0x1;
X &= 0xF; //限制X不能大于15，Y不能大于1
if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
X |= 0x80; //算出指令码
 Interrupt_WriteCommandLCM(X, 1); //这里不检测忙信号，发送地址码
Interrupt_WriteDataLCM(DData);
}
#endif