Interface definition for the matrix keypad. More...

Detailed Description

Interface definition for the matrix keypad.

Definition in file matrix_keypad.h.

#include <stdint.h>
#include <stdbool.h>
#include "periph/gpio.h"

Include dependency graph for matrix_keypad.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	matrix_keypad_params_t
	Device initialization parameters. More...

struct	matrix_keypad_t
	Device descriptor for the driver. More...

Macros
#define	CONFIG_MATRIX_KEYPAD_NUM_ROWS 2
	Maximum number of rows.

#define	CONFIG_MATRIX_KEYPAD_NUM_COLUMNS 2
	Maximum number of columns.

#define	CONFIG_MATRIX_KEYPAD_DEBOUNCE_PATTERN_BEGIN 0xC0
	Debounce pattern high to low bits. More...

#define	CONFIG_MATRIX_KEYPAD_DEBOUNCE_PATTERN_END 0x7
	Debounce pattern low to high bits. More...

#define	CONFIG_MATRIX_KEYPAD_ROWS_USE_OPEN_DRAIN 0
	Use open drain GPIO mode.

#define	MATRIX_KEYPAD_ROWS_GPIO_MODE GPIO_OUT
	GPIO mode used for the row GPIOs.

#define	MATRIX_KEYPAD_DEBOUNCE_MASK (CONFIG_MATRIX_KEYPAD_DEBOUNCE_PATTERN_BEGIN \| CONFIG_MATRIX_KEYPAD_DEBOUNCE_PATTERN_END)
	Debounce pattern mask.

Typedefs
typedef uint8_t	matrix_keypad_state_row_t
	Type definition for a full row (all columns) state, variable width depending on the number of columns.

typedef void(*	matrix_keypad_cb_t) (void *arg, size_t row, size_t column, bool state)
	Callback for key state changes. More...

Functions
int	matrix_keypad_init (matrix_keypad_t dev, const matrix_keypad_params_t params, matrix_keypad_cb_t callback, void *arg)
	Initialize the given device. More...

size_t	matrix_keypad_scan (matrix_keypad_t *dev)
	Scan through the keypad matrix. More...

Data Structures