keyboard_driver.h File Reference

Interfaz del driver de teclado matricial. More...

#include "chip.h"
#include <stdint.h>

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Macros
#define	KEYBOARD_MAX_COLUMNS   3
	Cantidad maxima de columnas del teclado matricial.
#define	KEYBOARD_MAX_ROWS   4
	Cantidad maxima de filas del teclado matricial.

Functions
void	board_keyboard_init (void)
	Inicializa los pines del teclado matricial.
void	board_keyboard_int_enable (void)
	Habilita las interrupciones asociadas al teclado matricial.
int	board_keyboard_read_cell (uint8_t column, uint8_t row)
	Lee el estado de una celda puntual de la matriz.
void	board_keyboard_read_matrix (uint8_t *matrix_p[KEYBOARD_MAX_COLUMNS])
	Lee el estado completo de la matriz de teclado.
CHAR	board_keyboard_get_last_char (void)
	Devuelve el ultimo caracter detectado por el teclado.

Macro Definition Documentation

KEYBOARD_MAX_COLUMNS

#define KEYBOARD_MAX_COLUMNS   3

Definition at line 13 of file keyboard_driver.h.

KEYBOARD_MAX_ROWS

#define KEYBOARD_MAX_ROWS   4

Definition at line 15 of file keyboard_driver.h.

Function Documentation

board_keyboard_get_last_char()

CHAR board_keyboard_get_last_char

(

void

)

Returns

Codigo del ultimo caracter leido.

Definition at line 104 of file keyboard_driver.c.

References last_char.

board_keyboard_init()

void board_keyboard_init

(

void

)

Definition at line 30 of file keyboard_driver.c.

board_keyboard_int_enable()

void board_keyboard_int_enable

(

void

)

Definition at line 60 of file keyboard_driver.c.

board_keyboard_read_cell()

int board_keyboard_read_cell	(	uint8_t	column,
		uint8_t	row
	)

Parameters

column	Indice de columna.
row	Indice de fila.

Returns

Estado leido para la celda indicada.

Definition at line 92 of file keyboard_driver.c.

References state_matrix.

board_keyboard_read_matrix()

void board_keyboard_read_matrix

(

uint8_t *

matrix_p[KEYBOARD_MAX_COLUMNS]

)

Parameters

matrix_p

Vector de punteros donde se deposita el estado de cada columna.

Definition at line 95 of file keyboard_driver.c.

References KEYBOARD_MAX_COLUMNS, KEYBOARD_MAX_ROWS, and state_matrix.