lcd_hd44.c File Reference

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

#include "lcd_hd44.h"
#include "hw_lcd.h"
#include <cfg/arch_config.h>
#include <drv/timer.h>
#include <cfg/debug.h>


Defines
#define	LCDF_BUSY BV(7)
	Flag di stato del display.
Functions
static uint8_t	lcd_address (uint8_t addr)
	Addresses of LCD display character positions, calculated runtime to save RAM.
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 lcdpos_t	lcd_current_addr
	Current display position.

Detailed Description

LM044L type LCD hardware module (impl.

)

Author:: Bernardo Innocenti <bernie@develer.com>
Stefano Fedrigo <aleph@develer.com>

Definition in file lcd_hd44.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 334 of file lcd_hd44.c.

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 359 of file lcd_hd44.c.

Current display position.

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

Definition at line 130 of file lcd_hd44.c.