Clr_lcdram();//清除內(nèi)存

}

/**********************************
//= 函數(shù)原型: Pixel(unsigned char PointX,unsigned char PointY, bit Mode)
//= 功    能: 在指定坐標(biāo)位置顯示一個(gè)點(diǎn)
//= 參    數(shù): 坐標(biāo),顯示點(diǎn)或清除點(diǎn)
//= 返 回 值:
//= 函數(shù)性質(zhì)：私有函數(shù)
//= 如果顯示屏超過(guò)了256*256,請(qǐng)修改這個(gè)函數(shù) PointX,PointY的類(lèi)型
//= Mode 1:顯示 0:清除該點(diǎn)
**********************************/
Pixel(unsigned char PointX,unsigned char PointY, bit Mode)
{
    unsigned int StartAddr;
    unsigned char dat;
    StartAddr=(uint)PointX*30 + PointY/8 + grhome;
    dat=LC_BIT_OP+7-PointY%8; //生產(chǎn)位操作命令畫(huà)點(diǎn)的數(shù)據(jù)
    if(Mode) dat=dat|0x08;
    wr_cmd_2(LC_ADD_POS,StartAddr);//設(shè)置該點(diǎn)所在單元地址
    wr_cmd_0(dat); // 利用位操作命令畫(huà)點(diǎn)
}


/**********************************
//= 函數(shù)原型: void line( unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, bit Mode)
//= 功    能: 劃線函數(shù)
//= 參    數(shù): 坐標(biāo)1,坐標(biāo)2,顯示點(diǎn)或清除點(diǎn)
//= 返 回 值:
//= 函數(shù)性質(zhì)：私有函數(shù)
//= 其它:顯示點(diǎn)陣不超過(guò)255*255
/**********************************/

void line( unsigned char y1,unsigned char x1, unsigned char y2,unsigned char x2,  bit Mode)
{
    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, Mode);
            }
        }
        else
        {
            for(x=x2;x<=x1;x++)
            {
                y=(uchar)(k*x+b);
                Pixel(x, y, Mode);
            }
        }
    }
    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,Mode );
            }
        }
        else
        {
            for(y=y2;y<=y1;y++)
            {
                x=(uchar)(k*y+b);
                Pixel( x , y,Mode );
            }
        }
    }
}

/**********************************
//= 函數(shù)原型: void ShowChar(uchar row,uchar col,uchar ch)
//= 功    能: 在指定行列顯示8*16字符
//= 參    數(shù): 坐標(biāo)行,坐標(biāo)列,字符串指針
//= 返 回 值:
//= 函數(shù)性質(zhì)：公有函數(shù)
//=其它:所有可顯示字符不超過(guò)128個(gè),否則本函數(shù)有溢出的可能
**********************************/
void showchar(uchar col,uchar row,uchar *chp)
{
    #define hzp chp
    uchar char_sequence_number;
    uchar ascii_num;
    row/=8;col/=8;
    while (*chp != '\0')
    {
        if (*chp<0x80)//西文
        {
            for (char_sequence_number=0;ASCII_SUB_INDEX[char_sequence_number]!='\0';char_sequence_number++)
            {
                if (ASCII_SUB_INDEX[char_sequence_number]==*chp)
                {
                    chp++;
                    break;
                }

            }
            if(ASCII_SUB_INDEX[char_sequence_number]=='\0'){chp++;char_sequence_number=1;}

            char_sequence_number*=2;//一個(gè)ASCII字符占兩個(gè)8*8字符
            //寫(xiě)字符上半部分
            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令

            //寫(xiě)字符下半部分
            row+=1;//下半部分在下一行

            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number+1); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令

            //行列地址自動(dòng)指向下個(gè)字符位
            row-=1; col+=1;
            if(col==30){row+=2;col=0;}
        }
        else//中文
        {
            for (char_sequence_number=0;HZ_SUB_INDEX[char_sequence_number]!='\0';char_sequence_number+=2)
            {
                if (HZ_SUB_INDEX[char_sequence_number]==*hzp)
                {   hzp++;
                    if (HZ_SUB_INDEX[char_sequence_number+1]==*hzp)
                    {hzp++;
                        break;
                    }
                    else
                    {
                        hzp--;
                    }
                }

            }
            if(HZ_SUB_INDEX[char_sequence_number]=='\0'){hzp+=2;char_sequence_number=0;}

            char_sequence_number>>=1;//一個(gè)漢字兩個(gè)字符位

            for (ascii_num=0;ASCII_SUB_INDEX[ascii_num]!='\0';ascii_num++);//計(jì)算ASCII字符個(gè)數(shù)

            char_sequence_number=ascii_num*2+char_sequence_number*4;//一個(gè)漢字字符占四個(gè)8*8字符
            //寫(xiě)漢字左上角
            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令

            //寫(xiě)漢字左下角
            row+=1;//左下角下一行

            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number+1); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令


            //寫(xiě)漢字右上角
            row-=1;col+=1;//右上角上一行,下一列
            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number+2); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令

            //寫(xiě)漢字右下角
            row+=1;//右下角下一行
            char_addr_Pointer_Set(row,col);//設(shè)置Vram地址
            wr_data(char_sequence_number+3); //寫(xiě)數(shù)據(jù)
            wr_cmd_0(LC_UNCHANGED_WR);     //寫(xiě)命令

            row-=1; col+=1;                 //指向下一漢字位置
            if(col==30){row+=2;col=0;}
        }
    }
}

/**********************************
//= 函數(shù)原型: void ShowChar(uchar row,uchar col)
//= 功    能: 在指定行列反顯一個(gè)字符8*16
//= 參    數(shù): 行,列
//= 返 回 值:
//= 函數(shù)性質(zhì)：公有函數(shù)
**********************************/
void negative_showchar(uchar col,uchar row,uchar n,bit attribute)
{
   uint Addr;
   uchar line,dat,i;
   row/=8;col/=8;
   dat=0;//不反顯數(shù)據(jù)
   if (attribute)dat=0xff;//反顯數(shù)據(jù)
   for(i=0;i<n;i++)
   {
//        for(line=0;line<16;line++)
       for(line=1;line<15;line++)
       {

         Addr=(uint)(row*8+line)*30 + col+i+grhome;//一row占8line,一line30個(gè)字節(jié).一列1字節(jié)圖
         wr_cmd_2(LC_ADD_POS,Addr);//設(shè)置白線開(kāi)始地址
         wr_data(dat);//畫(huà)一條白線
         wr_cmd_0(LC_UNCHANGED_WR);
       }
   }
}
/**********************************
//= 函數(shù)原型: void fill_CGRAM(void)
//= 功    能: 填充CGRAM數(shù)據(jù)
//= 參    數(shù):
//= 返 回 值:
//= 函數(shù)性質(zhì)：私有函數(shù)
**********************************/
void fill_CGRAM(void)
{
    uint i,char_sequence_number;
    uint hz_adder;
    uchar code *p;
    //處理ASCII點(diǎn)陣
    for (char_sequence_number=0;ASCII_SUB_INDEX[char_sequence_number]!='\0';char_sequence_number++)
    {
        for(i=0;ASCII_LIB_INDEX[i]!='\0';i++)//從總表中定位要顯示字符的位置
        {
            if (ASCII_SUB_INDEX[char_sequence_number]==ASCII_LIB_INDEX[i])
            {
                break;
            }
        }
        
        if(ASCII_LIB_INDEX[i]=='\0'){i=1;}//字符不存在,則裝載第一字符,非0個(gè)

        i=i*16;//每個(gè)ASCII字符16個(gè)字節(jié)
        p = &ASCII_DOT_LIB[i];

        wr_cmd_2(LC_ADD_POS,CGRAMSTART+char_sequence_number*16);//設(shè)置CGRAM開(kāi)始地址
        wr_cmd_0(LC_AUT_WR);
        for(i=0;i<16;i++)
        {
            awr_data(*p++); // 寫(xiě)數(shù)據(jù)
        }
        wr_cmd_0(LC_AUT_OVR); // 自動(dòng)寫(xiě)結(jié)束
    }

    hz_adder = CGRAMSTART+char_sequence_number*16;
    //處理漢字點(diǎn)陣
    for (char_sequence_number=0;HZ_SUB_INDEX[char_sequence_number]!='\0';char_sequence_number+=2)
    {
        for(i=0;HZ_LIB_INDEX[i]!='\0';i+=2)//從總表中定位要顯示字符的位置
        {
            if ((HZ_SUB_INDEX[char_sequence_number]==HZ_LIB_INDEX[i])&&(HZ_SUB_INDEX[char_sequence_number+1]==HZ_LIB_INDEX[i+1]))
            {
                break;
            }
        }
        if(HZ_LIB_INDEX[i]=='\0'){i=0;}
        i=i*16;//每個(gè)hz占32個(gè)字節(jié)
        p = &HZ_DOT_LIB[i];

        wr_cmd_2(LC_ADD_POS,hz_adder+char_sequence_number*16);//設(shè)置CGRAM開(kāi)始地址
        wr_cmd_0(LC_AUT_WR);
        for(i=0;i<32;i++)
        {
            awr_data(*p++); // 寫(xiě)數(shù)據(jù)
        }
        wr_cmd_0(LC_AUT_OVR); // 自動(dòng)寫(xiě)結(jié)束
    }
}