File content as of revision 0:601fd83c75e0:

#include "doggy.h"

DogMLCD::DogMLCD( SPI& spi, PinName cs, PinName a0 ) : spi_(spi), cs_(cs), a0_(a0)
{
    b_ = (char*)calloc( 1024, 1 );
    XFont = xfont_8;

    const unsigned char c[] = { 
        0x40,       // display start line + 0-63
        0xa1,       // ADC set 0xA1 + 0 = normal (for reverse view) / +1 = reverse (for normal view)
        0xc0,       // common output mode + 0 = normal / + 0xF  reverse
        0xa6,       // dispaly mode 0xA6 + 0 = normal / 1 = reverse
        0xa2,       // set bias 0xa20 + 0 = 1/9 / +1 = 1/7
        0x2f,       // power control: 4 booster on + 2 regulator on + 1 follower on
        0xf8, 0x00, // set booster ratio , value 0=4x, 1=5x, 2=6x
        0x27,       // set voltage regulator (0x20) to 7
        0x81, 0x14, // set electronic volume , value
        0xac, 0x00, // static indicator set 0xAC +0 = off / +1 = on , 0 = flash mode
        0xaf        // display 0xAE +0 = off / +1 = on
    };
    spi_.format( 8, 0 );
    spi_.frequency( 1000000 );
    cs_ = 0;
    a0_ = 0;
    for( int i = 0 ; i < sizeof( c ); i++ )
        spi_.write( c[i] );
    cs_ = 1;
}
DogMLCD::~DogMLCD()
{
    free( b_ );
}

#define FASTPOKE( x, y ) b_[ ( ( y & 56 ) << 4 ) + ( x & 127 ) ] |= DOGMLCD_on[ y & 7 ];
#define FASTWIPE( x, y ) b_[ ( ( y & 56 ) << 4 ) + ( x & 127 ) ] |= DOGMLCD_off[ y & 7 ];
#define FASTINV( x, y ) b_[ ( ( y & 56 ) << 4 ) + ( x & 127 ) ] ^= DOGMLCD_on[ y & 7 ];

void DogMLCD::Poke( int x, int y )
{
    if( ( x & 0xFF80 ) == 0 && ( y & 0xFFC0 ) == 0 )
        FASTPOKE( x, y )
}
void DogMLCD::Wipe( int x, int y )
{
    if( ( x & 0xFF80 ) == 0 && ( y & 0xFFC0 ) == 0 )
        FASTWIPE( x, y )
}
void DogMLCD::Inv( int x, int y )
{
    if( ( x & 0xFF80 ) == 0 && ( y & 0xFFC0 ) == 0 )
        FASTINV( x, y )
}
void DogMLCD::Clear()
{
    int i = 1024;
    char* p = b_;
    while( i-- )
        *p++ = 0;
}
void DogMLCD::Flush()
{
    char* p = b_;
    spi_.format( 8, 0 );
    spi_.frequency( DOGMLCD_MHZ );
    for( int page = 0xB0 ; page < 0xB8 ; page++ )
    {
        cs_ = 0;
        a0_ = 0;
        spi_.write( page ); spi_.write( 0x10 ); spi_.write( 0x00 );
        
        a0_ = 1;
        int i = 128;
        while( i-- )
            spi_.write( *p++ );
        a0_ = 0;
    }
    cs_ = 1;
}