lm3228.c

别人的C51菜单程序

#include <at89c51xd2.h>
#include <absacc.h>
#include <intrins.h>
#include "common.h"

#define SCREEN_WIDTH 0x20


extern struct Pic *point_pic1;
/********************************************************************************************/
#define COMMAND_PORT XBYTE[0x8001] //定义命令端口地址
#define DATA_PORT XBYTE[0x8000]	   //定义数据端口地址
#define CODESTATE 0x01 //定义检测位
#define DATASTATE 0x02
#define DATAAUTOREAD 0x04
#define DATAAUTOWRITE 0x08
#define CONTROLLER  0x20
#define SCREENCOPY 0x40
#define BLINKCONTITION 0x80

/********************************************************************************************/
//检查状态
volatile bit check_state(uchar check_bit) 
{
	uchar state;
	state=COMMAND_PORT;
	switch(check_bit)
	{
		case CODESTATE:
		{
			if(state&0x01)
			return 1;
			else
			return 0;
		}
		case DATASTATE:
		{
			if(state&0x02)
			return 1;
			else
			return 0;
		}			 
		case DATAAUTOREAD:
		{
			if(state&0x04)
			return 1;
			else
			return 0;
		}
		case DATAAUTOWRITE:
		{
			if(state&0x08)
			return 1;
			else
			return 0;
		}
		case CONTROLLER:
		{
			if(state&0x02)
			return 1;
			else
			return 0;
		}
		case SCREENCOPY:
		{
			if(state&0x40)
			return 0;
			else
			return 1;
		}
		case BLINKCONTITION:
		{
			if(state&0x80)
			return 1;
			else
			return 0;
		}
			
	}
}
/********************************************************************************************/
//判断自动写
void check_auto_write(void)	reentrant
{
	while(!(check_state(DATAAUTOWRITE)));
}
/********************************************************************************************/
volatile void check_code_data(void) reentrant
{
	while(!(check_state(CODESTATE)));
	while(!(check_state(DATASTATE)));
}
/********************************************************************************************/
//指针设置
#define SET_CURSOR_POINTER 0x01		//设置光标位置
#define SET_CGRAM_POINTER 0X02		//设置CGRAM
#define SET_ADDRESS_POINTER 0x04
void set_point(uchar i,uchar data dat1,uchar data dat2) //向外部输出的数要定义在 data  区中
{
	check_code_data();	
	DATA_PORT=dat1;
	check_code_data();
	DATA_PORT=dat2;
	check_code_data();
	COMMAND_PORT=(0x20|i);
}
/********************************************************************************************/
//设置显示模式
#define LOGIC_OR 0x00
#define LOGIC_XOR 0x01
#define LOGIC_AND 0x02
#define TEXT_CHAR 0x04
void set_display_mode(uchar dat)
{
	check_code_data();
	COMMAND_PORT=(0x80|dat);
}
/********************************************************************************************/
//显示区域设置
#define TEXT_ADDRESS 0x00				//设置文本区首址
#define TEXT_WIDTH 0x01					//设置文本区宽度
#define GRAPHIC_ADDRESS 0x02			//设置图形区首址
#define GRAPHIC_WIDTH 0x03				//设置图形区宽度
void set_display_area(uchar i,uchar dat1,uchar dat2)
{
	if((i==0x01)||(i==0x03))
		dat2=0;
	check_code_data();
	DATA_PORT=dat1;
	check_code_data();
	DATA_PORT=dat2;
	check_code_data();
	COMMAND_PORT=(0x40|i);
}
/********************************************************************************************/
//显示开关设置
#define CURSORBLINK 0x01
#define CURSORON 0x02
#define TEXTON 0x04
#define GRAPHICON 0x08

void set_display(uchar displaymode)
{
	check_code_data();
	COMMAND_PORT=(displaymode|0x90);
}
/********************************************************************************************/
//光标形状设置
//参数0-7
void set_cursor(uchar i)
{
	check_code_data();
	COMMAND_PORT=(0xa0|i);
}
/********************************************************************************************/
//自动读写定义
#define AUTOWRITE 0x00
#define AUTOREAD 0x01
#define AUTOSTOP 0x02
void set_autoreadwrite(uchar i)	//reentrant
{
	check_code_data();
	COMMAND_PORT=(0xb0|i);
}
/********************************************************************************************/
//一次读写定义
#define write_address_add 0x00
#define read_address_add 0x01
#define write_address_sub 0x02
#define read_address_sub 0x03
#define write_address_nochange 0x04
#define read_address_nochange 0x05
/*&void set_once_read_write(uchar i,uchar letter)
{
	check_code_data();
	DATA_PORT=letter;
	check_code_data();
	COMMAND_PORT=(0xc0|i);
}*/

/********************************************************************************************/
//屏读
/*void screen_read(void)
{
	check_code_data();
	 COMMAND_PORT=0xe0;
}*/

/********************************************************************************************/
//屏拷贝
/*void screen_copy(void)
{
	check_code_data();
	COMMAND_PORT=0xe8;
}*/
/********************************************************************************************/
//位操作
//#define set_bit 0x08
//#define clear_bit 0x00
/*void bit_operation(uchar op,uchar i)
{
	check_code_data();
	COMMAND_PORT=(0xf0|op|i);
}*/
/********************************************************************************************/
/*void print_lcd(uchar str,uchar x,uchar y)
{
	unsigned int addr;
	addr=y*16+x;

	check_code_data();
	DATA_PORT=addr;
	check_code_data();
	DATA_PORT=addr>>8;
	check_code_data();
	COMMAND_PORT=0x24;
	check_code_data();
	DATA_PORT=str;
	check_code_data();
	COMMAND_PORT=0xc4;
}*/	
/********************************************************************************************/
//显示字符
 void text_display(uchar str)	//reentrant
{
	//set_point(SET_ADDRESS_POINTER,lowaddr,highaddr);
	//set_once_read_write(write_address_add,str-0x20);
	set_autoreadwrite(AUTOWRITE);
   	check_auto_write();
	DATA_PORT=str-0x20;
	set_autoreadwrite(AUTOSTOP);
}
/********************************************************************************************/
//显示字符串
void string_display(uchar data *str,uchar lowaddr,uchar highaddr) //reentrant
{
	set_point(SET_ADDRESS_POINTER,lowaddr,highaddr);
	set_autoreadwrite(AUTOWRITE);
	while(*str!='\0')
		//set_once_read_write(write_address_add,str[i]-0x20);
		{check_auto_write();
		DATA_PORT=*str-0x20;
		str++;
		}	
	set_autoreadwrite(AUTOSTOP);
}
/********************************************************************************************/
//显示代码区中的字符串
void string_display_code(uchar num,uchar code *str,uchar lowaddr,uchar highaddr) //reentrant
{
	uchar i;
	set_point(SET_ADDRESS_POINTER,lowaddr,highaddr);
	set_autoreadwrite(AUTOWRITE);
	if(num==0)
	{
		while(*str!='\0')
			{	
			check_auto_write();
			DATA_PORT=*str-0x20;
			str++;
			}
	}
	else
		for(i=0;i<num;i++)
		{
			check_auto_write();
			DATA_PORT=*str-0x20;
			str++;
		}	
	set_autoreadwrite(AUTOSTOP);
}
/********************************************************************************************/
//显示汉字
void hanzi_display(uchar *str,uint  num,uchar  lowaddr,uchar  highaddr)			 //data	data   data
{																					  
	uchar  i,j,k,haddr,addr,caddr; 	 //	 data
	haddr=0;addr=0;caddr=0;										  				   
	for(k=0;k<(num/32);k++)		  //显示多少字因为一个字是16*16点阵，所以占32字节空间
	{							//256*256液晶的地址			   //0x00 00  0x10 01 ..............0x10 0f 0x10 10 .............0x10 1f//
		caddr=lowaddr;										   //0x00 20													 0x10 3f//
		lowaddr=lowaddr+2;									   //...
		haddr=highaddr;										   //...
															   //0x1f e0
#if(SCREEN_WIDTH==0x20)										   //0x1f f0

		if(lowaddr>0x1e)			//换行
		{
			lowaddr=0x00;			//低地址
			highaddr=highaddr+2;;			//高位地址
		}
#else 
	if(SCREEN_WIDTH==0x10)			//注意不要和#else在一行
		if(lowaddr>0x0e)			//换行
		{
			lowaddr=0x00;			//低地址
			highaddr=highaddr+1;;			//高位地址
		} 
#endif

		for(i=0;i<16;i++)
		{	
#if(SCREEN_WIDTH==0x20)
			addr=caddr+32*i;
			if(i==8)
			haddr++;
#else 
	if(SCREEN_WIDTH==0x10)
			addr=caddr+16*i;
#endif
			set_point(SET_ADDRESS_POINTER,addr,haddr);
			set_autoreadwrite(AUTOWRITE);
			for(j=0;j<2;j++)
			{
				check_auto_write();
				DATA_PORT=*str;
				str++;

			}
			set_autoreadwrite(AUTOSTOP);
		}
	}
}
/********************************************************************************************/
//清图形显示缓冲区
void clrgraphic(void)
{
	uint j;
	
	set_point(SET_ADDRESS_POINTER,0x00,0x04);
	set_autoreadwrite(AUTOWRITE);
	for(j=0;j<4096;j++)
	{
		check_auto_write();
		DATA_PORT=0x00;
	}
	set_autoreadwrite(AUTOSTOP);		

}
/********************************************************************************************/
//清字符显示缓冲区
void clrtext(void)
{
	uint j;
	set_point(SET_ADDRESS_POINTER,0x00,0x30);
	set_autoreadwrite(AUTOWRITE);
	for(j=0;j<1024;j++)
	{
		check_auto_write();
		DATA_PORT=0x00;
	}
	set_autoreadwrite(AUTOSTOP);		
	
}
/********************************************************************************************/
//图片显示
volatile void picture_display(Picture *point1,uchar lowaddr,uchar highaddr,bit inverse)	
{
	uchar data i,j,laddr;
	Picture *point;
	point=point1;
	laddr=lowaddr; 
	CY=0;
	for(i=0;i<(point->length);i++)
	{
		CY=0;
		if(i)
		laddr=laddr+32;
		if(CY)
			highaddr=highaddr+1;
		 
		set_point(SET_ADDRESS_POINTER,laddr,highaddr); 
		set_autoreadwrite(AUTOWRITE);
		for(j=0;j<(point->width/8);j++)
		{
			if((laddr!=0x00)&&(j!=0))  //如果没j!=0,当laddr=0x20、0x40..时，显示不正常
				if((laddr+j)%32==0)
				{
					(point->picturecode)=(point->picturecode)+(point->width/8-j);

					break;
				}

			check_auto_write();
			if(!inverse)
				DATA_PORT=*(point->picturecode);
			else
				DATA_PORT=~*(point->picturecode);
			(point->picturecode)++;

		}
			set_autoreadwrite(AUTOSTOP);
			
	}
}
		
/********************************************************************************************/	

//初始化lcd
void init_lcd(void)
{

	
	//uint i,j;
	set_display_area(TEXT_ADDRESS,0x00,0x30);
	set_display_area(TEXT_WIDTH,SCREEN_WIDTH,0x00);	//因为3228是128*64，显示的字符为8*8，所以字符宽度为16
	set_display_area(GRAPHIC_ADDRESS,0x00,0x00);
	set_display_area(GRAPHIC_WIDTH,SCREEN_WIDTH,0x00);
	set_display(TEXTON|GRAPHICON);	 //CURSORBLINK|CURSORON|
	set_point(SET_ADDRESS_POINTER,0x00,0x00);
	//set_point(SET_CURSOR_POINTER,0x4e,0x30);
	set_display_mode(LOGIC_OR);
	//set_point(SET_ADDRESS_POINTER,0x1c,0x2e);
	



}