/*
 * hd44780.h
 */


#ifndef HD44780_H_
#define HD44780_H_

/* RS */
#define SET_OUT_LCD_RS DDRD |= _BV(PD0)
#define SET_LCD_RS PORTD |= _BV(PD0)
#define CLR_LCD_RS PORTD &= ~_BV(PD0)
/* RW */
#define SET_OUT_LCD_RW DDRD |= _BV(PD1)
#define SET_LCD_RW PORTD |= _BV(PD1)
#define CLR_LCD_RW PORTD &= ~_BV(PD1)
/* E */
#define SET_OUT_LCD_E DDRD |= _BV(PD2)
#define SET_LCD_E PORTD |= _BV(PD2)
#define CLR_LCD_E PORTD &= ~_BV(PD2)
/* D4 */
#define SET_OUT_LCD_D4 DDRD |= _BV(PD3)
#define SET_IN_LCD_D4 DDRD &= ~_BV(PD3)
#define SET_LCD_D4 PORTD |= _BV(PD3)
#define CLR_LCD_D4 PORTD &= ~_BV(PD3)
#define IS_SET_LCD_D4 PIND & _BV(PD3)
/* D5 */
#define SET_OUT_LCD_D5 DDRD |= _BV(PD4)
#define SET_IN_LCD_D5 DDRD &= ~_BV(PD4)
#define SET_LCD_D5 PORTD |= _BV(PD4)
#define CLR_LCD_D5 PORTD &= ~_BV(PD4)
#define IS_SET_LCD_D5 PIND & _BV(PD4)
/* D6 */
#define SET_OUT_LCD_D6 DDRD |= _BV(PD5)
#define SET_IN_LCD_D6 DDRD &= ~_BV(PD5)
#define SET_LCD_D6 PORTD |= _BV(PD5)
#define CLR_LCD_D6 PORTD &= ~_BV(PD5)
#define IS_SET_LCD_D6 PIND & _BV(PD5)
/* D7 */
#define SET_OUT_LCD_D7 DDRD |= _BV(PD6)
#define SET_IN_LCD_D7 DDRD &= ~_BV(PD6)
#define SET_LCD_D7 PORTD |= _BV(PD6)
#define CLR_LCD_D7 PORTD &= ~_BV(PD6)
#define IS_SET_LCD_D7 PIND & _BV(PD6)

#define LCD_NOP asm volatile("nop\n\t""nop\n\t" "nop\n\t" "nop\n\t" ::);



#define LCDCOMMAND 0
#define LCDDATA    1

#define LCD_LOCATE(x,y)  WriteToLCD(0x80|((x)+((y)*0x40)), LCDCOMMAND)

#define LCD_CLEAR              WriteToLCD(0x01, LCDCOMMAND)
#define LCD_HOME               WriteToLCD(0x02, LCDCOMMAND)

/* IDS */

#define LCDINCREMENT           0x02
#define LCDDECREMENT           0x00
#define LCDDISPLAYSHIFT        0x01

#define LCD_ENTRY_MODE(IDS)    WriteToLCD(0x04|(IDS), LCDCOMMAND)

/* BCD */
#define LCDDISPLAY             0x04
#define LCDCURSOR              0x02
#define LCDBLINK               0x01

#define LCD_DISPLAY(DCB)       WriteToLCD(0x08|(DCB), LCDCOMMAND)

/* RL */
#define LCDLEFT                0x00
#define LCDRIGHT               0x04

#define LCD_SHIFT_DISPLAY(RL)  WriteToLCD(0x18|(RL), LCDCOMMAND)
#define LCD_SHIFT_CURSOR(RL)   WriteToLCD(0x10|(RL), LCDCOMMAND)

#define LCD_CGRAM_ADDRESS(A)   WriteToLCD(0x40|((A)&0x3f), LCDCOMMAND)
#define LCD_DDRAM_ADDRESS(A)   WriteToLCD(0x80|((A)&0x7f), LCDCOMMAND)

#define LCD_WRITE_DATA(D)      WriteToLCD((D),LCDDATA)


void lcd_init(void);
void WriteToLCD(unsigned char v,unsigned char rs);
unsigned char ReadAddressLCD(void);
void lcd_puts(char *str);
#endif /* HD44780_H_ */