lcdcon.c

proteus与keil仿真89c55控制18b20 ds1302 字符液晶

uchar WriteData(uchar Data)	//写数据
{
	if(TestSta(3)==0)
	return 1;
	LCDDATADR = Data;

	return 0;
}
/*
uchar ReadData()	//读数据
{
	if(TestSta(1)==0)
	return 1;
	return LCDDATADR;
}
*/
void SetPos(uchar row, uchar col)//设置当前地址
{
	uint iPos;

	iPos = row * 20 + col;
	WriteDoubParm(LC_ADD_POS,iPos & 0xFF,iPos / 256);
	gCurRow = row;
	gCurCol = col;
}

/*
void at(unsigned char x,unsigned char y)//设定文本x,y 值
{	
	uint iPos; //地址
	
	iPos = x  + y* 20;
	WriteDoubParm(LC_ADD_POS,iPos&0xff,iPos/256);
	tCurRow = x;
	tCurCol = y;
}
*/
// 清屏
void cls(void)
{
	uint i;
	
	WriteDoubParm(LC_ADD_POS,0x00,0x00); // 置地址指针
	WriteCom(LC_AUT_WR); // 自动写
	for(i=0;i<0x0F00;i++)
	{
		TestSta(3);
		WriteData(0x00); // 写数据
	}
	WriteCom(LC_AUT_OVR); // 自动写结束
	WriteDoubParm(LC_ADD_POS,0x00,0x00); // 重置地址指针
	gCurRow = 0; // 置地址指针存储变量
	gCurCol = 0;
}

uchar InitLcd()
{
	P1_0=0;
	P1_0=1;
	WriteDoubParm(LC_TXT_STP,0x00,0x00);	//文本显示区首地址
	WriteDoubParm(LC_TXT_WID,0x14,0x00);	//文本显示区宽度
	WriteDoubParm(LC_GRH_STP,0x00,0x00);	//图形显示区首地址
	WriteDoubParm(LC_GRH_WID,0x14,0x00);	//图形显示区宽度
	WriteSigParm(LC_CGR_POS,CGRAMSTART >> 11); //设置便宜寄存器
	WriteCom(LC_CUR_SHP | 0x07);	//光标形状
	WriteCom(LC_MOD_OR);	//显示模式
	WriteCom(LC_DIS_SW |0x08);	//显示开关
	grhome = GRSTART;
	txthome = TXTSTART;
	
	return 0;
}

uchar dprintf(uchar x,uchar y,char *string,uchar mod)//ASCII(8*16)与汉字(16*16)显示
{
	char c1,c2,cData;
	uint i=0,j,len;
	uchar k;

	len=strlen(string);

	while(i<len)
	{
		c1 = string[i];
		c2 = string[i+1];

		SetPos(y,x/8);
		if(c1 >= 0)
		{
			// ASCII
		    if(c1 < 0x20)
		    {
		        switch(c1)
		        {
		            case CR:
		            case LF: // 回车或换行
		                i++;
						x=0;
		                if(y < 112)y+=HZ_CHR_HEIGHT;
		                continue;
		            case BS: // 退格
						i++;
		                if(y>ASC_CHR_WIDTH)y-=ASC_CHR_WIDTH;
		                cData = 0x00;
		                break;
		        }
			}
			for(j=0;j<ASC_CHR_HEIGHT;j++)
		    {
		        
		        if(c1 >= 0x1f)
		        {
				   	cData= ASC_MSK[(c1-0x1f)*ASC_CHR_HEIGHT+j];
					if(mod == 0)
						cData = ~cData;
					SetPos(y+j,x/8);
					if((x%8)==0)
					{
						WriteCom(LC_AUT_WR); // 写数据
			           	WriteData(cData);	
			        	WriteCom(LC_AUT_OVR);
					}
		        }
		        SetPos(y+j,x/8);
		    }
		    if(c1 != BS) // 非退格
		    x+=ASC_CHR_WIDTH;
		}
		else
		{ // 中文
			
		    for(j=0;j<sizeof(GB_16)/sizeof(GB_16[0]);j++)
		    {
		        if(c1 == GB_16[j].Index[0] && c2 == GB_16[j].Index[1])
		        break;
		    }
		    for(k=0;k<HZ_CHR_HEIGHT;k++)
		    {
				
		        SetPos(y+k,x/8);
		        if(j < sizeof(GB_16)/sizeof(GB_16[0]))
		        {
					c1=GB_16[j].Msk[k*2];
					c2=GB_16[j].Msk[k*2+1];
				}
				else	   
					c1=c2=0;
				if(mod == 0)
				{
					c1 = ~c1;
					c2 = ~c2;
				}
				WriteCom(LC_AUT_WR);
				WriteData(c1);
			    WriteCom(LC_AUT_OVR);
				
				WriteCom(LC_AUT_WR);
				WriteData(c2);
				WriteCom(LC_AUT_OVR);
		    }
		    x+=HZ_CHR_WIDTH;
		    i++;
		}  
		i++;
	}
	return len;
}
/*
void SetShowMode(uchar ShowMod)//设置显示模式
{
	ShowModeSW=ShowMod;
	WriteCom(LC_DIS_SW |ShowMod);
}

void Pixel(uchar PointX,uchar PointY,bit mod)//画点函数
{
	unsigned char StartAddr;
    unsigned char dat;
    StartAddr=7-(PointX%8);
    dat=LC_BIT_OP|StartAddr; //生产位操作命令画点的数据
    if(mod)
		dat=dat|0x08;
	SetPos(PointY,PointX/8);
	WriteCom(LC_BIT_OP|dat); // 写数据
}

void Line(uchar x1,uchar y1,uchar x2,uchar y2,bit mod)//画线函数
{
	unsigned char x,y;
    float k,b;

    if( abs(y1-y2) <= abs(x1-x2) ) // |k|<=1
    {
        k=((float)y2-y1) / ((float)x2-x1) ;
        b=y1-k*x1;
        if( x1 <= x2 )
        {
            for(x=x1;x<=x2;x++)
            {
                y=(uchar)(k*x+b);
                Pixel(x, y, mod);
            }
        }
        else
        {
            for(x=x2;x<=x1;x++)
            {
                y=(uchar)(k*x+b);
                Pixel(x, y, mod);
            }
        }
    }
    else // abs(y1-y2) > abs(x1-x2) |K|>1
    {
        k=((float)x2-x1) / ((float)y2-y1) ;
        b=x1-k*y1;
        if( y1 <= y2 )
        {
            for(y=y1;y<=y2;y++)
            {
                x=(uchar)(k*y+b);
                Pixel( x , y, mod);
            }
        }
        else
        {
            for(y=y2;y<=y1;y++)
            {
                x=(uchar)(k*y+b);
                Pixel( x , y, mod);
            }
        }
    }
}
*/