lcd_hd44.c File Reference

LM044L type LCD hardware module (impl. More...

#include "lcd_hd44.h"
#include "cfg/cfg_lcd_hd44.h"
#include <cfg/compiler.h>
#include "hw/hw_lcd_hd44.h"
#include "cfg/cfg_arch.h"
#include <drv/timer.h>
#include <cfg/debug.h>

Go to the source code of this file.

Defines
#define	LCDF_BUSY   BV(7)
	Flag di stato del display.
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 addr, 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.
Variables
static const uint8_t	lcd_address []
	Addresses of LCD display character positions, expanded for faster access (DB7 = 1).
static lcdpos_t	lcd_current_addr
	Current display position.

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Detailed Description

LM044L type LCD hardware module (impl.

)

Author:

Bernie Innocenti <bernie@codewiz.org>

Stefano Fedrigo <aleph@develer.com>

Definition in file lcd_hd44.c.

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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 338 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 363 of file lcd_hd44.c.

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Variable Documentation

lcdpos_t lcd_current_addr [static]

Current display position.

We remember this to optimize LCD output by avoiding to set the address every time.

Definition at line 134 of file lcd_hd44.c.