lcd_hd44.h File Reference

Hitachi HD44780 and clones LCD module. More...

#include "cfg/cfg_lcd.h"
#include <cfg/compiler.h>

Go to the source code of this file.

Defines
Display dimensions (in chars)
#define	LCD_ROWS   2
#define	LCD_COLS   16
Hitachi HD44 commands.
#define	LCD_CMD_DISPLAY_INI   0x30
#define	LCD_CMD_SETFUNC   0x38
	8 bits, 2 lines, 5x7 dots
#define	LCD_CMD_DISPLAY_ON   0x0F
	Switch on display.
#define	LCD_CMD_DISPLAY_OFF   0x08
	Switch off display.
#define	LCD_CMD_CLEAR   0x01
	Clear display.
#define	LCD_CMD_CURSOR_BLOCK   0x0D
	Show cursor (block).
#define	LCD_CMD_CURSOR_LINE   0x0F
	Show cursor (line).
#define	LCD_CMD_CURSOR_OFF   0x0C
	Hide cursor.
#define	LCD_CMD_DISPLAYMODE   0x06
#define	LCD_CMD_SET_CGRAMADDR   0x40
#define	LCD_CMD_RESET_DDRAM   0x80
#define	LCD_CMD_SET_DDRAMADDR   0x80
#define	LCD_CMD_DISPLAY_SHIFT   0x18
#define	LCD_CMD_MOVESHIFT_LEFT   0x00
#define	LCD_CMD_MOVESHIFT_RIGHT   0x04
Typedefs
typedef uint8_t	lcdpos_t
	Type for combined LCD cursor position (x,y).
Functions
void	lcd_waitBusy (void)
	Wait until the LCD busy flag clears.
void	lcd_moveTo (uint8_t addr)
	Move the cursor to addr, only if not already there.
void	lcd_setReg (uint8_t val)
	Write a value in LCD data register, waiting for the busy flag.
void	lcd_putc (uint8_t a, uint8_t c)
	Write the character c on display address addr.
void	lcd_remapChar (const char *glyph, char code)
	Remap the glyph of a character.

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Detailed Description

Hitachi HD44780 and clones LCD module.

Version:

Id

lcd_hd44.h 2536 2009-04-17 10:39:42Z batt

Author:

Bernie Innocenti <bernie@codewiz.org>

Stefano Fedrigo <aleph@develer.com>

Definition in file lcd_hd44.h.

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Typedef Documentation

typedef uint8_t lcdpos_t

Type for combined LCD cursor position (x,y).

Definition at line 88 of file lcd_hd44.h.

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Function Documentation

void lcd_putc	(	uint8_t	addr,
		uint8_t	c
	)

Write the character c on display address addr.

NOTE: argh, the HD44 lcd type is a bad beast: our move/write -> write optimization requires this mess because display lines are interleaved!

Definition at line 340 of file lcd_hd44.c.

void lcd_remapChar	(	const char *	glyph,
		char	code
	)

Remap the glyph of a character.

glyph - bitmap of 8x8 bits. code - must be 0-7 for the Hitachi LCD-II controller.

Definition at line 365 of file lcd_hd44.c.