2 * Copyright Droids Corporation, Microb Technology, Eirbot (2005)
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; either version 2 of the License, or
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7 * (at your option) any later version.
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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14 * You should have received a copy of the GNU General Public License
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15 * along with this program; if not, write to the Free Software
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16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 * Revision : $Id: lcd_protocol.h,v 1.1.10.1 2006-11-26 21:06:04 zer0 Exp $
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25 #include "lcd_config.h"
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28 // masque des broches concernees sur le port
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30 #define LCD_DATA_MASK (0x0F << LCD_FIRST_DATA_BIT)
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32 /* instruction register bit positions */
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33 #define LCD_CLR 0 /* DB0: clear display */
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34 #define LCD_HOME 1 /* DB1: return to home position */
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35 #define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
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36 #define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
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37 #define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
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38 #define LCD_ON 3 /* DB3: turn lcd/cursor on */
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39 #define LCD_ON_DISPLAY 2 /* DB2: turn display on */
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40 #define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
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41 #define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
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42 #define LCD_MOVE 4 /* DB4: move cursor/display */
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43 #define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
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44 #define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
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45 #define LCD_FUNCTION 5 /* DB5: function set */
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46 #define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
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47 #define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
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48 #define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
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49 #define LCD_CGRAM 6 /* DB6: set CG RAM address */
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50 #define LCD_DDRAM 7 /* DB7: set DD RAM address */
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51 #define LCD_BUSY 7 /* DB7: LCD is busy */
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53 /* set entry mode: display shift on/off, dec/inc cursor move direction */
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54 #define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */
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55 #define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */
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56 #define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */
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57 #define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */
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59 /* display on/off, cursor on/off, blinking char at cursor position */
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60 #define LCD_DISP_OFF 0x08 /* display off */
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61 #define LCD_DISP_ON 0x0C /* display on, cursor off */
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62 #define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
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63 #define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
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64 #define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
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66 /* move cursor/shift display */
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67 #define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
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68 #define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
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69 #define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
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70 #define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
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72 /* function set: set interface data length and number of display lines */
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73 #define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */
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74 #define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */
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75 #define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */
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76 #define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */
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79 #define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
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81 #define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
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85 #define LCD_MODE_DEFAULT ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC) )
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88 ** macros for automatically storing string constant in program memory
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91 #define P(s) ({static const char c[] __attribute__ ((progmem)) = s;c;})
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93 #define lcd_puts_P(__s) lcd_puts_p(P(__s))
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96 #endif //LCD_PROTOCOLE_H
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