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lcd_lib.h
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lcd_lib.h
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//*****************************************************************************
// This code is distributed under the GNU Public License
// which can be found at http://www.gnu.org/licenses/gpl.txt
//
//*****************************************************************************
#ifndef LCD_LIB
#define LCD_LIB
#include <inttypes.h>
//Uncomment this if LCD 4 bit interface is used
//******************************************
#define LCD_4bit
//***********************************************
#define LCD_RS 0 //define MCU pin connected to LCD RS
#define LCD_RW 1 //define MCU pin connected to LCD R/W
#define LCD_E 2 //define MCU pin connected to LCD E
#define LCD_D0 0 //define MCU pin connected to LCD D0
#define LCD_D1 1 //define MCU pin connected to LCD D1
#define LCD_D2 2 //define MCU pin connected to LCD D1
#define LCD_D3 3 //define MCU pin connected to LCD D2
#define LCD_D4 4 //define MCU pin connected to LCD D3
#define LCD_D5 5 //define MCU pin connected to LCD D4
#define LCD_D6 6 //define MCU pin connected to LCD D5
#define LCD_D7 7 //define MCU pin connected to LCD D6
#define LCD_DATA_PORT PORTD //define MCU port connected to LCD data pins
#define LCD_CONTROL_PORT PORTD //define MCU port connected to LCD control pins
#define LCD_DATA_DDR DDRD //define MCU direction register for port connected to LCD data pins
#define LCD_CONTROL_DDR DDRD //define MCU direction register for port connected to LCD control pins
#define SET_E LCD_CONTROL_PORT|=1<<LCD_E
#define SET_RS LCD_CONTROL_PORT|=1<<LCD_RS
#define CLEAR_E LCD_CONTROL_PORT&=~(1<<LCD_E)
#define CLEAR_RS LCD_CONTROL_PORT&=~(1<<LCD_RS)
#define delay_ms(ms) _delay_ms(ms)
/* instruction register bit positions, see HD44780U data sheet */
#define LCD_CLR 0 /* DB0: clear display */
#define LCD_HOME 1 /* DB1: return to home position */
#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
#define LCD_ON 3 /* DB3: turn lcd/cursor on */
#define LCD_ON_DISPLAY 2 /* DB2: turn display on */
#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
#define LCD_MOVE 4 /* DB4: move cursor/display */
#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
#define LCD_FUNCTION 5 /* DB5: function set */
#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
#define LCD_CGRAM 6 /* DB6: set CG RAM address */
#define LCD_DDRAM 7 /* DB7: set DD RAM address */
#define LCD_BUSY 7 /* DB7: LCD is busy */
#define LCD_LINES 2 /* visible lines */
#define LCD_LINE_LENGTH 16 /* line length (in characters) */
/* display on/off, cursor on/off, blinking char at cursor position */
#define LCD_DISP_OFF 0x08 /* display off */
#define LCD_DISP_ON 0x0C /* display on, cursor off */
#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
/* move cursor/shift display */
#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
// cursor position to DDRAM mapping
#define LCD_LINE0_DDRAM_ADDRESS 0x00
#define LCD_LINE1_DDRAM_ADDRESS 0x40
#define LCD_LINE2_DDRAM_ADDRESS 0x14
#define LCD_LINE3_DDRAM_ADDRESS 0x54
// progress bar defines
#define PROGRESSPIXELS_PER_CHAR 6
void LCDsendChar(uint8_t); //forms data ready to send to 74HC164
void LCDcommand(uint8_t); //forms data ready to send to 74HC164
void LCDinit(void); //Initializes LCD
void LCDclr(void); //Clears LCD
void LCDhome(void); //LCD cursor home
void LCDstring(uint8_t*, uint8_t); //Outputs string to LCD
void LCDGotoXY(uint8_t, uint8_t); //Cursor to X Y position
void LCDStringtoLCD(const uint8_t*, uint8_t, uint8_t);//copies flash string to LCD at x,y
void LCDprintXY(const char*,uint8_t, uint8_t); // print string on lcd (no auto linefeed), in X,Y Position
void LCDdefinechar(const uint8_t *,uint8_t);//write char to LCD CGRAM
void LCDshiftRight(uint8_t); //shift by n characters Right
void LCDshiftLeft(uint8_t); //shift by n characters Left
void LCDcursorOn(void); //Underline cursor ON
void LCDcursorOnBlink(void); //Underline blinking cursor ON
void LCDcursorOFF(void); //Cursor OFF
void LCDblank(void); //LCD blank but not cleared
void LCDvisible(void); //LCD visible
void LCDcursorLeft(uint8_t); //Shift cursor left by n
void LCDcursorRight(uint8_t); //shif cursor right by n
// displays a horizontal progress bar at the current cursor location
// <progress> is the value the bargraph should indicate
// <maxprogress> is the value at the end of the bargraph
// <length> is the number of LCD characters that the bargraph should cover
//adapted from AVRLIB - displays progress only for 8 bit variables
void LCDprogressBar(uint8_t progress, uint8_t maxprogress, uint8_t length);
#endif