#define LCD_SET_CGADR           0x40
 
#define LCD_GC_CHAR0            0
#define LCD_GC_CHAR1            1
#define LCD_GC_CHAR2            2
#define LCD_GC_CHAR3            3
#define LCD_GC_CHAR4            4
#define LCD_GC_CHAR5            5
#define LCD_GC_CHAR6            6
#define LCD_GC_CHAR7            7 


////////////////////////////////////////////////////////////////////////////////
// Schreibt ein Zeichen in den Character Generator RAM
 
void lcd_generatechar(uint8_t code, const uint8_t *data)
{
    // Startposition des Zeichens einstellen
    lcd_command(LCD_SET_CGADR|(code<<3));
 
    // Bitmuster übertragen
    for (uint8_t i=0; i<8; i++)
    {
        lcd_data(data[i]);
    }
}



void lcd_init(void)
{
   LCD_DDR = LCD_DDR | 0x0F | (1<<LCD_RS) | (1<<LCD_EN);   // Port auf Ausgang schalten
 
   // muss 3mal hintereinander gesendet werden zur Initialisierung
 
   _delay_ms(100);
   LCD_PORT &= 0xF0;
   LCD_PORT |= 0x03;            
   LCD_PORT &= ~(1<<LCD_RS);      // RS auf 0
   lcd_enable();
 
   _delay_ms(5);
   lcd_enable();
 
   _delay_ms(1);
   lcd_enable();
   _delay_ms(1);
 
   // 4 Bit Modus aktivieren 
   LCD_PORT &= 0xF0;
   LCD_PORT |= 0x02;
   lcd_enable();
   _delay_ms(1);
 
   // DOGM
   lcd_command(0x21);
   lcd_command(0x1C);
   lcd_command(0x51);
   lcd_command(0x6A);
   lcd_command(0x74);
   lcd_command(0x20);
   lcd_command(0x0C);
   lcd_command(0x01);
   lcd_command(0x06);
   lcd_clear();
}
 

int main(void)


  lcd_init();

  
    uint8_t chrdata1[8] = {
        0b00001110,     //   XXX
        0b00000100,     //    X
        0b00000100,     //    X
        0b00000100,     //    X
        0b00000100,     //    X
        0b00001100,     //   XX
        0b00000100,     //    X
        0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR1, chrdata1);


    uint8_t chrdata2[8] = {
        0b00011111,     //  XXXXX
        0b00001000,     //   X  
		0b00000100,     //    X
        0b00000010,     //     X
        0b00000001,     //      X
        0b00010001,     //  X   X
        0b00001110,     //   XXX
        0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR2, chrdata2);


    uint8_t chrdata3[8] = {
        0b00001110,     //   XXX
        0b00010001,     //  X   X
		0b00000001,     //      X
        0b00000010,     //     X
        0b00000100,     //    X
        0b00000010,     //     X
        0b00011111,     //  XXXXX
		0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR3, chrdata3);


    uint8_t chrdata4[8] = {
        0b00000010,     //     X
		0b00000010,     //     X
		0b00011111,     //  XXXXX
		0b00010010,     //  X  X
		0b00001010,     //   X X
		0b00000110,     //    XX
		0b00000010,     //     X
		0b00000000
        };

   lcd_generatechar(LCD_GC_CHAR4, chrdata4);

   uint8_t chrdata5[8] = {
        0b00001110,     //   XXX
		0b00010001,     //  X   X
		0b00000001,     //      X   
		0b00000001,      //      X
		0b00011110,     //  XXXX
		0b00010000,     //  X
		0b00011111,     //  XXXXX
		0b00000000
        };


    lcd_generatechar(LCD_GC_CHAR5, chrdata5);


   uint8_t chrdata6[8] = {
        0b00001110,     //   XXX
		0b00010001,     //  X   X
		0b00010001,     //  X   X   
		0b00011110,      // XXXX
		0b00010000,     //  X
		0b00001000,     //   X
		0b00000110,     //    XX
		0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR6, chrdata6);


   uint8_t chrdata7[8] = {
        0b00001000,     //   X
		0b00001000,     //   X
		0b00001000,     //   X   
		0b00000100,     //    X
		0b00000010,     //     X
		0b00000001,     //      X
		0b00011111,     //  XXXXX
		0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR7, chrdata7);

   uint8_t chrdata0[8] = {
        0b00001100,     //   XX
		0b00000010,     //     X
		0b00000001,     //      X   
		0b00001111,      //  XXXX
		0b00010001,     //  X   X
		0b00010001,     //  X   X
		0b00001110,     //   XXX
		0b00000000
        };

    lcd_generatechar(LCD_GC_CHAR0, chrdata0);

  lcd_data(LCD_GC_CHAR0);
  lcd_data(LCD_GC_CHAR1);
  lcd_data(LCD_GC_CHAR2);
  lcd_data(LCD_GC_CHAR3);
  lcd_data(LCD_GC_CHAR4);
  lcd_data(LCD_GC_CHAR5);
  lcd_data(LCD_GC_CHAR6);
  lcd_data(LCD_GC_CHAR7);
  lcd_data(LCD_GC_CHAR8);


}