lcd.h

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#ifndef F_CPU
#define F_CPU             2000000UL
#endif

#define LCD_4BIT_MODE     1

#define LCD_BUSY_FLAG     0

#define LCD_DATA_PORT     PORTA
#define LCD_D0_PORT       LCD_DATA_PORT  
#define LCD_D1_PORT       LCD_DATA_PORT  
#define LCD_D2_PORT       LCD_DATA_PORT  
#define LCD_D3_PORT       LCD_DATA_PORT  
#define LCD_D4_PORT       LCD_DATA_PORT  
#define LCD_D5_PORT       LCD_DATA_PORT  
#define LCD_D6_PORT       LCD_DATA_PORT  
#define LCD_D7_PORT       LCD_DATA_PORT  
#define LCD_D0_bp         PIN0_bp        
#define LCD_D1_bp         PIN1_bp        
#define LCD_D2_bp         PIN2_bp        
#define LCD_D3_bp         PIN3_bp        
#define LCD_D4_bp         PIN4_bp        
#define LCD_D5_bp         PIN5_bp        
#define LCD_D6_bp         PIN6_bp        
#define LCD_D7_bp         PIN7_bp        


#define LCD_COMM_PORT     PORTD
#define LCD_RS_PORT       LCD_COMM_PORT  
#define LCD_RW_PORT       LCD_COMM_PORT  
#define LCD_E_PORT        LCD_COMM_PORT  
#define LCD_RS_bp         PIN4_bp        
#define LCD_RW_bp         PIN3_bp        
#define LCD_E_bp          PIN5_bp        

#define TDELAY1_ms        50             
#define TDELAY2_ms        5              
#define TDELAY3_us        100            
#define TPWE_us           0.5            
#define TDELAY_us         50             
#define T_CLEARDISPLAY_us 1600           

#define LCD_LINES          2             
#define LCD_DISP_LENGTH    16            

#if LCD_DISP_LENGTH==16
#define LCD_START_LINE1    0x00          
#define LCD_START_LINE2    0x40          
#define LCD_START_LINE3    0x10          
#define LCD_START_LINE4    0x50          
#else
#define LCD_START_LINE1    0x00          
#define LCD_START_LINE2    0x40          
#define LCD_START_LINE3    0x14          
#define LCD_START_LINE4    0x54          
#endif

#define LCD_CLR_bp               0      
#define LCD_HOME_bp              1      
#define LCD_ENTRY_MODE_bp        2      
#define LCD_ENTRY_INC_bp         1      
#define LCD_ENTRY_SHIFT_bp       0      
#define LCD_ON_bp                3      
#define LCD_ON_DISPLAY_bp        2      
#define LCD_ON_CURSOR_bp         1      
#define LCD_ON_BLINK_bp          0      
#define LCD_MOVE_bp              4      
#define LCD_MOVE_DISP_bp         3      
#define LCD_MOVE_RIGHT_bp        2      
#define LCD_FUNCTION_bp          5      
#define LCD_FUNCTION_8BIT_bp     4      
#define LCD_FUNCTION_2LINES_bp   3      
#define LCD_FUNCTION_10DOTS_bp   2      
#define LCD_CGRAM_bp             6      
#define LCD_DDRAM_bp             7      
#define LCD_BUSY_bp              7      

#define LCD_ENTRY_DEC            0x04   
#define LCD_ENTRY_DEC_SHIFT      0x05   
#define LCD_ENTRY_INC            0x06   
#define LCD_ENTRY_INC_SHIFT      0x07   

#define LCD_DISP_OFF             0x08   
#define LCD_DISP_ON              0x0C   
#define LCD_DISP_ON_BLINK        0x0D   
#define LCD_DISP_ON_CURSOR       0x0E   
#define LCD_DISP_ON_CURSOR_BLINK 0x0F   

#define LCD_MOVE_CURSOR_LEFT     0x10   
#define LCD_MOVE_CURSOR_RIGHT    0x14   
#define LCD_MOVE_DISP_LEFT       0x18   
#define LCD_MOVE_DISP_RIGHT      0x1C   

#define LCD_FUNCTION_4BIT        0x20   
#define LCD_FUNCTION_4BIT_1LINE  0x20   
#define LCD_FUNCTION_4BIT_2LINES 0x28   
#define LCD_FUNCTION_8BIT        0x30   
#define LCD_FUNCTION_8BIT_1LINE  0x30   
#define LCD_FUNCTION_8BIT_2LINES 0x38   

void lcd_init(void);
void lcd_clear(void);
void lcd_home(void);
void lcd_gotoxy(uint8_t x, uint8_t y);
void lcd_putc(char c);
void lcd_puts(char *s);
void lcd_cmd(uint8_t cmd);
void lcd_data(uint8_t b);

#define LCD_D0_bm   (1  << (LCD_D0_bp))   
#define LCD_D1_bm   (1  << (LCD_D1_bp))   
#define LCD_D2_bm   (1  << (LCD_D2_bp))   
#define LCD_D3_bm   (1  << (LCD_D3_bp))   
#define LCD_D4_bm   (1  << (LCD_D4_bp))   
#define LCD_D5_bm   (1  << (LCD_D5_bp))   
#define LCD_D6_bm   (1  << (LCD_D6_bp))   
#define LCD_D7_bm   (1  << (LCD_D7_bp))   
#define LCD_RS_bm   (1  << (LCD_RS_bp))   
#define LCD_RW_bm   (1  << (LCD_RW_bp))   
#define LCD_E_bm    (1  << (LCD_E_bp))    


#if LCD_BUSY_FLAG==1
#if LCD_4BIT_MODE==1
#define LCD_DATA_PORT_gm         ((LCD_D7_bm)|(LCD_D6_bm)|(LCD_D5_bm)|(LCD_D4_bm))
#define LCD_WRITE_BYTE(b,rs)     (lcd4bf_write_byte((b),(rs)))
#define LCD_INIT                 lcd4bf_init
#else
#define LCD_DATA_PORT_gm         (0xFF)
#define LCD_WRITE_BYTE(b,rs)     (lcd8bf_write_byte((b),(rs)))
#define LCD_INIT                 lcd8bf_init
#endif
#else
#if LCD_4BIT_MODE==1
#define LCD_DATA_PORT_gm         ((LCD_D7_bm)|(LCD_D6_bm)|(LCD_D5_bm)|(LCD_D4_bm))
#define LCD_WRITE_BYTE(b,rs)     (lcd4_write_byte((b),(rs)))
#define LCD_INIT                 lcd4_init
#else
#define LCD_DATA_PORT_gm         (0xFF)
#define LCD_WRITE_BYTE(b,rs)     (lcd8_write_byte((b),(rs)))
#define LCD_INIT                 lcd8_init
#endif
#endif