lcd.h

Procyon方案(手工制作的MP3播放器电路及资料)

//*****************************************************************
//
// File Name	: 'lcd.h'
// Title			: Character LCD driver for HD44780 displays (mem-mapped)
// Author		: Pascal Stang
// Date			: 11/22/2000
// Version		: 0.1
// Target MCU	: ATmega103
// Editor Tabs	: 3
//
//*****************************************************************


#ifndef LCD_H
#define LCD_H

#include "global.h"

/* change these definitions to adapt setting */

#define LCD_LINES           4     /* visible lines */
#define LCD_LINE_LENGTH    20     /* internal line length */

/* you shouldn't need to change anything below this line */

#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: increment ? */
#define LCD_ENTRY_SHIFT     0      /*   DB2: shift ? */

#define LCD_ON_CTRL         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_IO_DATA         0x0001	// A0 goes to RS
#define LCD_IO_FUNCTION     0x0000

#define LCD_IO_READ			0x0002	// A1 goes to R/-W
#define LCD_IO_WRITE		0x0000


#define LCD_PORT_MASK 0xff
#define LCD_FDEF_1    (1<<LCD_FUNCTION_8BIT)

#define LCD_FDEF_2    (1<<LCD_FUNCTION_2LINES)

#define LCD_FUNCTION_DEFAULT ((1<<LCD_FUNCTION) | LCD_FDEF_1 | LCD_FDEF_2)

#define LCD_MODE_DEFAULT     ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC))

#define LCD_DATA_PORT	PORTA

#define LCD_E_PORT		PORTD
#define LCD_E_PIN		PD5

#define lcd_e_high()    sbi(LCD_E_PORT, LCD_E_PIN); asm volatile ("nop"); asm volatile ("nop");
#define lcd_e_low()     cbi(LCD_E_PORT, LCD_E_PIN); 


/* prototypes */
void lcdBusyWait(void);
void lcdControlWrite(u08 data);
u08 lcdControlRead(void);
void lcdDataWrite(u08 data);
u08 lcdDataRead(void);
void lcdInit(void);
void lcdHome(void);
void lcdGotoXY(u08 row, u08 col);
void lcdPrintStr(char str[]);

void lcdPrintfU4(u08 Data);
void lcdPrintfu08(u08 Data);
void lcdPrintfu16(u16 Data);
void lcdPrintfu32(u32 Data);


#endif