#include "keyboard_driver.h"
#include <string.h>

Include dependency graph for keyboard_driver.c:

Macros
#define	KEYBOARD_MAX_ROWS 4

#define	KEYBOARD_MAX_COLUMNS 3

#define	FILA0_IRQ_HANDLER GPIO4_IRQHandler

#define	FILA1_IRQ_HANDLER GPIO5_IRQHandler

#define	FILA2_IRQ_HANDLER GPIO6_IRQHandler

#define	FILA3_IRQ_HANDLER GPIO7_IRQHandler

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 fila, uint8_t columna)
	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 ()
	Devuelve el ultimo caracter detectado por el teclado.

void	read_row (uint8_t row)

Variables
uint8_t	state_matrix [KEYBOARD_MAX_ROWS][KEYBOARD_MAX_COLUMNS]

uint8_t	last_char = 0xFF

Macro Definition Documentation

◆ FILA0_IRQ_HANDLER

void FILA0_IRQ_HANDLER ( void ) GPIO4_IRQHandler

Definition at line 143 of file keyboard_driver.c.

◆ FILA1_IRQ_HANDLER

void FILA1_IRQ_HANDLER ( void ) GPIO5_IRQHandler

Definition at line 152 of file keyboard_driver.c.

◆ FILA2_IRQ_HANDLER

void FILA2_IRQ_HANDLER ( void ) GPIO6_IRQHandler

Definition at line 161 of file keyboard_driver.c.

◆ FILA3_IRQ_HANDLER

void FILA3_IRQ_HANDLER ( void ) GPIO7_IRQHandler

Definition at line 170 of file keyboard_driver.c.

◆ KEYBOARD_MAX_COLUMNS

#define KEYBOARD_MAX_COLUMNS 3

Definition at line 18 of file keyboard_driver.c.

◆ KEYBOARD_MAX_ROWS

#define KEYBOARD_MAX_ROWS 4

Definition at line 17 of file keyboard_driver.c.

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.

◆ read_row()

void read_row ( uint8_t row )

Definition at line 112 of file keyboard_driver.c.

References last_char, and state_matrix.

Variable Documentation

◆ last_char

uint8_t last_char = 0xFF

Definition at line 27 of file keyboard_driver.c.

Referenced by board_keyboard_get_last_char(), and read_row().

◆ state_matrix

uint8_t state_matrix[KEYBOARD_MAX_ROWS][KEYBOARD_MAX_COLUMNS]

Definition at line 25 of file keyboard_driver.c.

Referenced by board_keyboard_read_cell(), board_keyboard_read_matrix(), and read_row().

Macros

Functions

Variables