lcd.h

这个是单片机4200的ui程序

/*
 *  Start of Zoran Standard Header
 *  Copyright (c) 2002, 2005 Zoran Corporation
 *  
 *  
 *  All rights reserved.  Proprietary and confidential.
 *  
 *  DESCRIPTION for lcd.h
 *      LCD driver interface for the text-only user interface card.
 *  
 *  NEW HISTORY COMMENT (description must be followed by a blank line)
 *  <Enter change description here>

 *  ===== HISTORY of changes in //depot/imgeng/sw/se_gw/ui/fs/textui/lcd.h
 *  
 *  5/Aug/05 #2  dstrauss  Moved declaration of "common" routines to uilcd.h
 *  
 *  End of Zoran Standard Header
 */
/******************************************************************************
*                    Copyright 2002, Oak Imaging Group
*                    A subsidiary of Oak Technology, Inc.
*
* Author:            Mark V. Dobrosielski
*
* Description:       This is the header file for the UI lcd driver. The driver
*                    supports any LCD character modules based on the Hitachi
*                    HD44780 Dot Matrix LCD Controller.  The following display
*                    configurations are supported:
*
*                    1 line x 16 characters     2 x 16      4 x 16
*                    1 x 20                     2 x 20      4 x 20
*                    1 x 24                     2 x 24
*                    1 x 40                     2 x 40
*
* Revision History:
* Date      Author   Description
* ----      ------   -----------
* 8/5/02    Dobro    Initial release.
******************************************************************************/
#ifndef __LCD
#define __LCD

#include "standard.h"

/******************************************************************************
                     constants/enums/typedefinitions
******************************************************************************/
/* default number of lcd rows (can be overridden in sys.h) */
#ifndef LCD_NUM_ROWS
#define LCD_NUM_ROWS   2
#endif

/* make sure # lines = 1, 2, or 4 */
#if ((LCD_NUM_ROWS != 1) && (LCD_NUM_ROWS != 2) && (LCD_NUM_ROWS != 4))
#error "LCD_NUM_ROWS != 1, 2, or 4"
#endif

/* default number of lcd characters per line (can be overridden in sys.h) */
#ifndef LCD_NUM_COLS
#define LCD_NUM_COLS   16
#endif

/* make sure # characters = 16, 20, 24, or 40 */
#if ((LCD_NUM_COLS != 16) && (LCD_NUM_COLS != 20) && (LCD_NUM_COLS != 24) && (LCD_NUM_COLS != 40))
#error "LCD_NUM_COLS != 16, 20, 24, or 40"
#endif

/***************************************************************
   HD44780 Commands
   ----------------
   Entry Mode:       I/D = 1  Cursor increments on data write
                       S = 0  No display shift on data write
   Display Control:    D = 1  Display on
                       C = 0  Cursor off
                       B = 0  Blinking off
   Shift Control:    S/C = 0  Don't shift display
                     R/L = 0  Don't shift cursor
   Function Mode:     DL = 1  Data Length = 8 bits
                       N = 1  Number of lines = 2
                       F = 0  5x8 font
***************************************************************/
#define LCD_CMD_CLS     0x01  /* Clear display     */
#define LCD_CMD_ENTRY   0x06  /* Entry Mode Set    */
#define LCD_CMD_DISPLAY 0x0C  /* Display Control   */
#define LCD_CMD_SHIFT   0x10  /* Shift Control     */
#define LCD_CMD_FNCT    0x38  /* Function Mode Set */

/******************************************************************************
                                 structures
******************************************************************************/

/******************************************************************************
                                 externs
******************************************************************************/

#endif