www.pudn.com > LPC2148_IAR_LPC2148.zip > drv_hd44780.h

/************************************************************************* 
 * 
 *    Used with ICCARM and AARM. 
 * 
 *    (c) Copyright IAR Systems 2005 
 * 
 *    File name   : drv_hd44780.h 
 *    Description : HD44780 Driver defenition 
 * 
 *    History : 
 *    1. Data        : Feb 10, 2005 
 *       Author      : Stanimir Bonev 
 *       Description : Create 
 *    2. Data        : Nov 3, 2005 
 *       Author      : Stanimir Bonev 
 *       Description : Modify 
 *                      Add some definitions connected 
 *                     with HD44780_StrShow, HD44780_CheckVisual, 
 *                     HD44780_DisplayShift, HD44780_GetDDRamAdd fuctions 
 *    3. Data        : Jan 4, 2006 
 *       Author      : Stanimir Bonev 
 *       Description : Modify 
 *                      Macro HD44780_BUS_DLY 
 * 
 *    $Revision: 1.1.2.1 $ 
 **************************************************************************/ 
 
#ifndef  __DRV_HD44780_H 
#define  __DRV_HD44780_H 
#include "includes.h" 
 
typedef Int8U HD44780_XY_DEF; 
typedef Int8S HD44780_STRING_DEF; 
 
/* Display address range definition */ 
#define HD44780_MIN_LINE1_ADD     0x00 
#define HD44780_MAX_LINE1_ADD     0x27 
#define HD44780_MIN_LINE2_ADD     0x40 
#define HD44780_MAX_LINE2_ADD     0x67 
/* Max DDRAM Address */ 
#define HD44780_MAX_DDRAM         0x67 
/* Max CGRAM Address */ 
#define HD44780_MAX_CGRAM         0x3F 
/* Address counter auto increment/decrement definition */ 
#define HD44780_AC_DECREMENT      0 
#define HD44780_AC_INCREMENT      1 
/* Auto Display shift or cursor move definition */ 
#define HD44780_CURSOR_MOVE       0 
#define HD44780_DISPLAY_SHIFT     1 
/* Number of line 1/2 definition */ 
#define HD44780_1_LINE            0 
#define HD44780_2_LINE            1 
/* Dot 5x8 or 5x10 definition */ 
#define HD44780_DOT_5_8           0 
#define HD44780_DOT_5_10          1 
/* Dispaly On/Off definition */ 
#define HD44780_DISPLAY_OFF       0 
#define HD44780_DISPLAY_ON        1 
/* Cursor On/Off definition */ 
#define HD44780_CURSOR_OFF        0 
#define HD44780_CURSOR_ON         1 
/* Cursor Blink definition */ 
#define HD44780_CURSOR_NORM       0 
#define HD44780_CURSOR_BLINK      1 
 
/* Delay macro */ 
inline void HD44780_BUS_DLY(void){for(volatile int dly = 10;dly;--dly);} 
 
typedef struct 
{ 
  Int8U  DiplayPos; 
  Int16U AC_Direction  : 1; 
  Int16U DisplayShift  : 1; 
  Int16U Line          : 1; 
  Int16U DotMode       : 1; 
  Int16U DisplayOn     : 1; 
  Int16U CursorOn      : 1; 
  Int16U CursorBlink   : 1; 
} HD44780_CTRL_DEF; 
 
typedef enum 
{ 
  HD44780_OK = 0, 
  HD44780_BUSY_TO_ERROR, 
  HD44780_ERROR, 
  HD44780_OUT_OF_VISUAL, 
} HD44780_ERROR_CODE_DEF; 
 
HD44780_ERROR_CODE_DEF HD44780_PowerUpInit (void); 
HD44780_CTRL_DEF * HD44780_GetSetting(void); 
HD44780_ERROR_CODE_DEF HD44780_SetMode (void); 
HD44780_ERROR_CODE_DEF HD44780_ClearDisplay (void); 
HD44780_ERROR_CODE_DEF HD44780_ReturnToHome (void); 
HD44780_ERROR_CODE_DEF HD44780_DisplayShift (Boolean DisplayOn, Int8S DiplayShift); 
HD44780_ERROR_CODE_DEF HD44780_CursorPosSet (Boolean CursorOn, Boolean CursorBlink, HD44780_XY_DEF X, HD44780_XY_DEF Y); 
HD44780_ERROR_CODE_DEF HD44780_RdCGRAM (HD44780_STRING_DEF * CG_Data, Int8U CGRAM_Add); 
HD44780_ERROR_CODE_DEF HD44780_WrCGRAM (const HD44780_STRING_DEF * CG_Data, Int8U CGRAM_Add); 
HD44780_ERROR_CODE_DEF HD44780_StrShow(HD44780_XY_DEF X, HD44780_XY_DEF Y,  const HD44780_STRING_DEF * DataStr); 
Int8U HD44780_GetDisplayPosition (void); 
 
extern void Dly100us(void *arg); 
 
#endif  /* __DRV_HD44780_H */