#define _ARMLCM12864_C_

#include "LCM12864.H"

/*****************************************
** 將一個(gè)整型數(shù)據(jù)轉(zhuǎn)化為字符串
** 入口參數(shù) 要轉(zhuǎn)換的整型數(shù): dataint, 數(shù)組p[10]
** 改變思路：整數(shù) -->字符串-->加字符串結(jié)束標(biāo)志
** 可以轉(zhuǎn)換小于0的整數(shù)
*****************************************/
void long_to_string( long int dataint, char *p  )
{
    long int datainttmp;
    char *p1;             //指向轉(zhuǎn)換成為數(shù)組時(shí)用到
    char datachar1[10];
    char datachar2[10];
    uchar n = 0;         //取整型數(shù)據(jù)的位數(shù)
    uchar i = 0;
    uchar k1 = 0;         //取字符個(gè)數(shù)
    uchar k2 = 0;         //取字符個(gè)數(shù)

    if( dataint >= 0 )
    datainttmp = ( long int )dataint;
    else datainttmp = ( long int )dataint * ( -1 );

    p1 = datachar2;


    while( datainttmp != 0 )
    {
        datachar1[n++] = ( datainttmp % 10 ) + 0x30;  //轉(zhuǎn)換為字符并取得這個(gè)整型數(shù)據(jù)的位數(shù) n
        datainttmp /= 10;
    }

    if( dataint > 0 )          //如果要轉(zhuǎn)換的整型數(shù)據(jù)>0
    {
        k1 = n - 1;
        k2 = n;

        for( i = 0; i < k2; i++, k1-- )
        {
            datachar2[k1] = datachar1[i];               //將數(shù)字符串倒過來
        }
        datachar2[n] = '\0';      //字符串結(jié)束標(biāo)志
    }

    else if( dataint < 0 )       //<0
    {
        k1 = n;
        k2 = n + 1;

        for( i = 0; i < k2; i++, k1-- )
        {
            datachar2[k1] = datachar1[i];
        }
        datachar2[n + 1] = '\0';
        datachar2[0] = '-';      //加上負(fù)號(hào)
    }

    else if( dataint == 0 )        //=0
    {
        datachar2[0] = 0x30;
        datachar2[1] = '\0';
    }

    p1 = datachar2;
                                                                 \
    strcpy( p, p1 );
}

/*****************************************
** 將一個(gè)浮點(diǎn)型數(shù)據(jù)轉(zhuǎn)化為字符串
** 入口參數(shù) 要轉(zhuǎn)換的浮點(diǎn)數(shù): dataf, 數(shù)組datastr[10], 小數(shù)位數(shù) P
** 最好小數(shù)位數(shù)不是
** 改變思路：浮點(diǎn)數(shù) --> 整數(shù) -->字符串-->根據(jù)各種類型的浮點(diǎn)數(shù)不同調(diào)整字符位置
** 可以轉(zhuǎn)換小于0的浮點(diǎn)數(shù)
*****************************************/
void float_2_string( float dataf, char *datastr, uchar p )
{
    float dataftmp  = dataf;
    char datastr1[10];
    uchar flag1 = 0;
    uchar flag2 = 0;
    uchar k;
    uchar i = 0;

    if( (long int)dataf == 0 )       // dataf為 -1 --- 1 之間的數(shù)
    {
        dataftmp += 2;          //隨便一個(gè)整數(shù) 只是為了擴(kuò)大為首位不為0的數(shù)
        flag1 = 1;
        if( dataf < 0 )
        {
            flag2 = 1;
            dataftmp -= 4;      //隨便一個(gè)整數(shù) 只是為了擴(kuò)大為首位不為0的數(shù)
            flag1 = 0;
        }
    }

    for( i = 0; i < p + 1; i++ )
        dataftmp = dataftmp * 10;

    long_to_string( (long int)dataftmp, datastr1 );
    k = strlen( datastr1 );

    for( i = 1; i < p + 1; i++ )
        *( datastr1 + (k-i) ) =  *( datastr1 + (k-i-1) );

    *( datastr1 + (k-i) ) = '.';


    if( flag1 )        //如果為0.00820之類的數(shù)
    {
        *datastr1 = '0';
        flag1 = 0;
    }

    if( flag2 )       //如果為-0.00820之類的數(shù)
    {
        *datastr1 = '-';
        *( datastr1 + 1 ) = '0';
    }

    if( p == 0 )
    {
        *( datastr1 + (k-i) ) = '\0';
    }

    strcpy( datastr, datastr1 );
}
//*********************************************************************************************


//單線寫一個(gè)字節(jié)
void LCM_write_byte( uchar byte )
{
     uint i;
     uchar byte_tmp;
     for( i = 0; i < 8; i++ )
     {
        SCLK_CLR;
        byte_tmp = byte;
        byte_tmp <<= i;
        if( byte_tmp & 0x80 ) SID_SET;
        else SID_CLR;
        SCLK_SET;
        SCLK_CLR;
     }

     delay_nus( 10 );
}

//寫指令
void LCM_write_command( uchar command )
{
    CS_SET;
    LCM_write_byte( 0xf8 );     				//11111, RW, RS, 0  其中令RW = 0, RS = 0, 最后一位為0
    LCM_write_byte( 0xf0 & command );       	//高四位
    LCM_write_byte( 0xf0 & ( command << 4 ) );  //低四位
    CS_CLR;
}

//寫數(shù)據(jù)
void LCM_write_data( uchar data )
{
    CS_SET;
    LCM_write_byte( 0xfa );    				   //11111, RW, RS, 0  其中令RW = 0, RS = 0, 最后一位為0
    LCM_write_byte( 0xf0 & data );             //高四位
    LCM_write_byte( 0xf0 & ( data << 4 ) );	   //低四位
    CS_CLR;
}


//LCM初始化					
void LCM_init( void )
{
    PORT_DDR_OUT;		       //初始化時(shí)定義端口為輸出

    delay_nms( 40 );
    LCM_write_command( 0x30 ); //0x30
    delay_nus( 100 );
    LCM_write_command( 0x30 ); //0x30
    delay_nus( 37 );
    LCM_write_command( 0x0C ); //0x0c 顯示控制 開顯示, 不顯游標(biāo), 游標(biāo)位置不反白
    delay_nus( 100 );
    LCM_write_command( 0x01 ); //清屏
    delay_nms( 10 );          //10ms延時(shí)
    LCM_write_command( 0x06 ); //0X06進(jìn)入點(diǎn)設(shè)定， 指定在數(shù)據(jù)的讀取與寫入時(shí)，設(shè)定游標(biāo)的移動(dòng)方向及顯示的移位
    delay_nus( 100 );
	
}


//設(shè)置液晶顯示位置
//入口: r 行(范圍1 - 4 )  c 列(范圍1 - 8 )
void LCM_set_rc( uchar r, uchar c )
{
	uchar pos;
	switch( r )
	{
		case 1:
			pos = 0x80 + c - 1;
			break;
		case 2:
			pos = 0x90 + c - 1;
			break;
		case 3:
			pos = 0x88 + c - 1;
			break;
		case 4:
			pos = 0x98 + c - 1;
			break;
	}

	LCM_write_command( pos );
}

//寫中文漢字串
void LCM_write_string( uchar r, uchar c, char *string )
{
    LCM_set_rc( r, c );
    while( *string )
    {
        LCM_write_data( *string );
		string++;
    }
}

//寫整數(shù)
void LCM_write_datalongint( uchar r, uchar c, long int datalongint )
{
    char a[10];
    long_to_string( datalongint, a ) ;
	LCM_write_string( r, c, a );
}

//寫浮點(diǎn)型數(shù)據(jù)
void LCM_write_datafloat( uchar r, uchar c, float dataf, uchar p )
{
    char a[10];
    float_2_string( dataf, a, p );
    LCM_write_string( r, c, a );
}
//******************************************************************************