lcd1602.h

ucos2在凌阳61上的移植,用软中继实现调度

#ifndef	__LCD1602_H__
#define	__LCD1602_H__
/**************************************************************************
  
                   		THE 1602 CHAR LCD LIB SUPPORT FOR SPECE060A
  
             		COPYRIGHT (c)   2006 BY stebin
                       		--  ALL RIGHTS RESERVED  --
  
   File Name:       LCD1602.h
   Author:          stebin(一水寒)
   Created:         2006/12/9
   Modified:		no
   Last Revision: 		1.0
   Reference:   Jiang Jian Jun's "THE 1602 CHAR LCD LIB with keil51"
 ***************************************************************************/
#include "spce061v004.h"
#define LcdRs    0x2000
#define LcdRw    0x4000
#define LcdEn    0x8000
#define M_Mask   0x00ff
//***************************************************************************/

void Data_Output(unsigned char cmd)//数据输出
{
    *P_IOB_Dir=*P_IOB_Dir|M_Mask;
    *P_IOB_Attrib=*P_IOB_Attrib|M_Mask;
    *P_IOB_Data=*P_IOB_Buffer|cmd;  
}
unsigned char Data_Input(void)//读取端口信号
{    
    *P_IOB_Dir=*P_IOB_Dir&(~M_Mask);
    *P_IOB_Attrib=*P_IOB_Attrib&(~M_Mask);
    *P_IOB_Data=*P_IOB_Buffer&(~M_Mask);
    return *P_IOB_Data;
}
void One_output(unsigned char n,unsigned char d)//单一引脚输出
{
 *P_IOB_Dir=*P_IOB_Dir|n;
 *P_IOB_Attrib=*P_IOB_Attrib|n;
 if(d==1)
 	{
 *P_IOB_Data=*P_IOB_Buffer|n;
 	}
 else	{	*P_IOB_Data=*P_IOB_Buffer&(~n);	}
 return;
}
//内部等待函数**************************************************************************
unsigned char LCD_Wait(void)//等待忙信号
{  
	One_output(LcdRs,0);
	One_output(LcdRw,1); *P_Watchdog_Clear=0x0001;//*P_Watchdog_Clear=0x0001;延时一段时间
	One_output(LcdEn,1); *P_Watchdog_Clear=0x0001;
	while(Data_Input()&0x0080)
		{*P_Watchdog_Clear=0x0001;}
	One_output(LcdEn,0);
	return Data_Input();		
}
//向LCD写入命令或数据************************************************************
#define LCD_COMMAND			0      // Command
#define LCD_DATA			1      // Data
#define LCD_CLEAR_SCREEN	0x01      // 清屏
#define LCD_HOMING  		0x02      // 光标返回原点
void LCD_Write(unsigned char style, unsigned char input)
{
	One_output(LcdEn,0);
	One_output(LcdRs,style);
	One_output(LcdRw,0); *P_Watchdog_Clear=0x0001;//*P_Watchdog_Clear=0x0001;延时一段时间
	Data_Output(input);	 *P_Watchdog_Clear=0x0001;//注意顺序
	One_output(LcdEn,1); *P_Watchdog_Clear=0x0001;//注意顺序
	One_output(LcdEn,0); *P_Watchdog_Clear=0x0001;
	LCD_Wait();	

}

//设置显示模式************************************************************
#define LCD_SHOW			0x04    //显示开
#define LCD_HIDE			0x00    //显示关	  

#define LCD_CURSOR			0x02 	//显示光标
#define LCD_NO_CURSOR		0x00    //无光标		     

#define LCD_FLASH			0x01    //光标闪动
#define LCD_NO_FLASH		0x00    //光标不闪动

void LCD_SetDisplay(unsigned char DisplayMode)
{
	LCD_Write(LCD_COMMAND, 0x08|DisplayMode);

}

//设置输入模式************************************************************
#define LCD_AC_UP			0x02
#define LCD_AC_DOWN			0x00      // default

#define LCD_MOVE			0x01      // 画面可平移
#define LCD_NO_MOVE			0x00      //default

void LCD_SetInput(unsigned char InputMode)
{
	LCD_Write(LCD_COMMAND, 0x04|InputMode);
	
}

//移动光标或屏幕************************************************************
/*
#define LCD_CURSOR		0x02      
#define LCD_SCREEN		0x08
#define LCD_LEFT		0x00
#define LCD_RIGHT		0x04
void LCD_Move(unsigned char object, unsigned char direction)
{
	if(object==LCD_CURSOR)
		LCD_Write(LCD_COMMAND,0x10|direction);
	if(object==LCD_SCREEN)
		LCD_Write(LCD_COMMAND,0x18|direction);
}
*/
//初始化LCD************************************************************
void LCD_Initial()
{
	One_output(LcdEn,0);
	LCD_Write(LCD_COMMAND,0x38);           //8位数据端口,2行显示,5*7点阵
	LCD_Write(LCD_COMMAND,0x38);
	LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR);    //开启显示, 无光标
	LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN);   //清屏
	LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); 
	      //AC递增, 画面不动
}

//*********************跳到任意行列****************************************
void GotoXY(unsigned char x, unsigned char y)
{
	if(y==0)
		LCD_Write(LCD_COMMAND,0x80+x);
	if(y==1)
		LCD_Write(LCD_COMMAND,0xc0+x);
	
}
void Print(unsigned char *str)//打印函数
{
	while(*str!='\0')
	{
		LCD_Write(LCD_DATA,*str);
		str++;
	}
	return;
}
void PrintNO(unsigned int number)//打印数字函数
{ 
   unsigned int temp=1 ;
   unsigned int n;
   n=number;
  while(n>9)	
    {
  	   n/=10;
		temp*=10;
	}
	do
	{
	  n=number/temp;
	  number%=temp;
	  temp/=10;	  
	  LCD_Write(LCD_DATA,n+'0');  
	}	
	while(number);
	
	return;
}
/*
void LCD_LoadChar(unsigned char user[8], unsigned char place)
{
	unsigned char i;
	LCD_Write(LCD_COMMAND,0x40|(place*8));
	for(i=0; i<8; i++)
		LCD_Write(LCD_DATA,user[i]);
}
*/
//************************************************************************
#endif