/********************************************
   Defines physical data and control lines
*********************************************/
#include <Mega32.h>

#ifndef _LCD_CTRL_
#define _LCD_CTRL_

#define LCD_DATA_OUT    PORTD
#define LCD_DATA_IN     PIND
#define LCD_CTRL        PORTC
#define LCD_DATA_DIR    DDRD 
#define LCD_CTRL_DIR    DDRC

#define OUTPUT          0xff
#define INPUT           0x00

#define _BV(a)      (1<<a)

// control lines
#define A0(a)       ((a==1)?(PORTC|=_BV(0)):(PORTC&=(~_BV(0))))
#define nWR(a)      ((a==1)?(PORTC|=_BV(1)):(PORTC&=(~_BV(1))))
#define nRD(a)		((a==1)?(PORTC|=_BV(2)):(PORTC&=(~_BV(2))))
#define nCS(a)      ((a==1)?(PORTC|=_BV(3)):(PORTC&=(~_BV(3))))
#define nRS(a)      ((a==1)?(PORTC|=_BV(4)):(PORTC&=(~_BV(4))))

#define SED1335_CTRL_RESET_ON   (nRS(0))
#define SED1335_CTRL_RESET_OFF  (nRS(1))

#define LOW	  0
#define HIGH  1

void LCD_CTRL_init();

#endif