aversive_10-03-12/modules/devices/ihm/lcd/lcd.c File Reference

Implementation for the LCD module. More...

#include <stdio.h>
#include <aversive/pgmspace.h>
#include <aversive.h>
#include <aversive/wait.h>
#include <lcd.h>
#include <lcd_protocol.h>

Go to the source code of this file.

Defines
#define	e_delay()   _delay_loop_1(1)
Functions
void	initial_8_bit_write (uint8_t value)
void	lcd_command (uint8_t cmd)
void	lcd_gotoxy (uint8_t x, uint8_t y)
void	lcd_clrscr (void)
void	lcd_home (void)
void	lcd_putc (char c)
int	lcd_dev_putc (char c, FILE *f)
void	lcd_init (uint8_t dispAttr)

---

Detailed Description

Implementation for the LCD module.

Interface for the LCD module.

Todo:

Test the module with other wirings, verify the delay macro, stqtic inlines for the public functions ??

Test:

works on mega32 with all on the same port and old normal wiring, how about more speific connections ?

This module provides functions for using a lcd device

Todo:

implement ANSI commands for cursor positionning ?

Test:

works on mega32 with all on the same port and old normal wiring, how about more speific connections ?

This module provides functions for using a standard lcd device the lcd s intended to be used in 4 bit mode, so don't wire the low nibble, only D4-D7 to 4 CONSECUTIVE port lines we need the RW, RS and E lines too. since the last version, you can scramble the wiring, except for D4-D7 who must remain consecutive (see lcd_config.h)

in this new version you can use lcd_putc(''); to clear the screen. This maintains an easy compatibility when you want to use an uart instad (form feed).

Definition in file lcd.c.

---

Define Documentation

 

#define e_delay

(

)

_delay_loop_1(1)

Definition at line 49 of file lcd.c.

---

Function Documentation

void initial_8_bit_write

(

uint8_t

value

)

Definition at line 164 of file lcd.c.

References cbi, IRQ_LOCK, IRQ_UNLOCK, and LCD_DATA_MASK.

Referenced by lcd_init().

void lcd_clrscr

(

void

)

clear all the screen avoid using this function, escpecially if you use printf

Definition at line 288 of file lcd.c.

References LCD_CLR, and lcd_command().

Referenced by lcd_init(), and lcd_putc().

void lcd_command

(

uint8_t

cmd

)

Definition at line 207 of file lcd.c.

Referenced by lcd_clrscr(), lcd_gotoxy(), lcd_home(), and lcd_init().

int lcd_dev_putc	(	char	c,
		FILE *	f
	)

same than lcd_putc but with a prototype that is compliant with avrlibc > 1.4.0 fdevopen prototype

Definition at line 328 of file lcd.c.

References lcd_putc().

void lcd_gotoxy	(	uint8_t	x,
		uint8_t	y
	)

move the cursor in the screen, x= line, y = char

Definition at line 260 of file lcd.c.

References lcd_command(), and LCD_DDRAM.

Referenced by lcd_putc().

void lcd_home

(

void

)

Definition at line 296 of file lcd.c.

References lcd_command(), and LCD_HOME.

void lcd_init

(

uint8_t

dispAttr

)

Init the LCD module

Definition at line 334 of file lcd.c.

References DDR, initial_8_bit_write(), lcd_clrscr(), lcd_command(), LCD_DISP_OFF, LCD_FUNCTION_4BIT_1LINE, LCD_FUNCTION_8BIT_1LINE, LCD_FUNCTION_DEFAULT, LCD_MODE_DEFAULT, and sbi.

void lcd_putc

(

char

c

)

Put a char on screen if c =
cursor is positioned on the next line if c = the screen will be cleared

Definition at line 304 of file lcd.c.

References lcd_clrscr(), and lcd_gotoxy().

Referenced by lcd_dev_putc().