buttons_driver.c File Reference

#include "buttons_driver.h"
#include <stdbool.h>
#include <stddef.h>

Include dependency graph for buttons_driver.c:

Go to the source code of this file.

Data Structures
struct	button_hw_t
struct	button_estado_t

Macros
#define	BUTTONS_CANTIDAD   4U
#define	BUTTONS_DEBOUNCE_MS   40U

Functions
static int8_t	button_indice_desde_tecla (uint8_t tecla)
static bool	button_esta_presionado (uint8_t indice)
void	buttons_init (void)
	Inicializa los pines asociados a los cuatro pulsadores.
void	button_notify_irq (uint8_t button_id)
	Notifica al driver que una tecla genero una interrupcion externa.
void	buttons_process (uint32_t delta_ms)
	Procesa el debounce y actualiza los eventos latcheados de teclas.
uint8_t	button_get_event (void)
	Devuelve y consume el siguiente evento de tecla confirmado.

Variables
static const button_hw_t	button_hw_ [BUTTONS_CANTIDAD]
static volatile button_estado_t	button_estados_ [BUTTONS_CANTIDAD]

Detailed Description

Author

agustinavila (tinto.nosp@m..avi.nosp@m.la@gm.nosp@m.ail..nosp@m.com)

Version

0.1

Date

2023-04-26

Copyright

Copyright (c) 2023

Definition in file buttons_driver.c.

Macro Definition Documentation

BUTTONS_CANTIDAD

#define BUTTONS_CANTIDAD   4U

Definition at line 17 of file buttons_driver.c.

BUTTONS_DEBOUNCE_MS

#define BUTTONS_DEBOUNCE_MS   40U

Definition at line 18 of file buttons_driver.c.

Function Documentation

button_esta_presionado()

static bool button_esta_presionado ( uint8_t  indice )

static

Definition at line 71 of file buttons_driver.c.

References button_hw_.

Referenced by buttons_process().

button_get_event()

uint8_t button_get_event

(

void

)

Returns

TECLA1..TECLA4 si hay un evento pendiente, o 0 si no hay eventos para consumir.

Definition at line 163 of file buttons_driver.c.

References button_estados_, button_hw_, BUTTONS_CANTIDAD, button_estado_t::evento_pendiente, and button_hw_t::tecla.

Referenced by hmi_process().

button_indice_desde_tecla()

static int8_t button_indice_desde_tecla ( uint8_t  tecla )

static

Definition at line 55 of file buttons_driver.c.

References TECLA1, TECLA2, TECLA3, and TECLA4.

Referenced by button_notify_irq().

button_notify_irq()

void button_notify_irq

(

uint8_t

button_id

)

Esta funcion debe llamarse desde el handler asociado a la tecla correspondiente.

Parameters

button_id

Identificador de la tecla que disparo la IRQ.

Definition at line 107 of file buttons_driver.c.

References button_estados_, and button_indice_desde_tecla().

Referenced by PININT0_IRQ_HANDLER(), PININT1_IRQ_HANDLER(), PININT2_IRQ_HANDLER(), and PININT3_IRQ_HANDLER().

buttons_init()

void buttons_init

(

void

)

Definition at line 76 of file buttons_driver.c.

References button_estado_t::armado, button_estados_, button_hw_, BUTTONS_CANTIDAD, button_estado_t::debounce_acumulado_ms, button_estado_t::evento_pendiente, and button_estado_t::irq_pendiente.

Referenced by app_init().

buttons_process()

void buttons_process

(

uint32_t

delta_ms

)

Debe llamarse de manera periodica desde el lazo principal.

Parameters

delta_ms

Tiempo transcurrido desde la ultima llamada, en milisegundos.

Definition at line 120 of file buttons_driver.c.

References button_estado_t::armado, button_esta_presionado(), button_estados_, BUTTONS_CANTIDAD, BUTTONS_DEBOUNCE_MS, button_estado_t::debounce_acumulado_ms, button_estado_t::evento_pendiente, and button_estado_t::irq_pendiente.

Referenced by app_step_20ms().

Variable Documentation

button_estados_

volatile button_estado_t button_estados_[BUTTONS_CANTIDAD]

static

Initial value:

= {
    [0] = {.armado = true},
    [1] = {.armado = true},
    [2] = {.armado = true},
    [3] = {.armado = true},
}

Definition at line 48 of file buttons_driver.c.

Referenced by button_get_event(), button_notify_irq(), buttons_init(), and buttons_process().

button_hw_

const button_hw_t button_hw_[BUTTONS_CANTIDAD]

static

Initial value:

= {
    [0] = {.tecla = TECLA1, .scu_port = 1U, .scu_pin = 0U, .scu_mode = (MD_PUP | MD_EZI | MD_ZI), .scu_func = FUNC0, .gpio_port = 0U, .gpio_pin = 4U, .pinint_selector = 0U, .pinint_mask = PININTCH0, .irqn = PIN_INT0_IRQn},
    [1] = {.tecla = TECLA2, .scu_port = 1U, .scu_pin = 1U, .scu_mode = (MD_PUP | MD_EZI | MD_ZI), .scu_func = FUNC0, .gpio_port = 0U, .gpio_pin = 8U, .pinint_selector = 1U, .pinint_mask = PININTCH1, .irqn = PIN_INT1_IRQn},
    [2] = {.tecla = TECLA3, .scu_port = 1U, .scu_pin = 2U, .scu_mode = (MD_PUP | MD_EZI | MD_ZI), .scu_func = FUNC0, .gpio_port = 0U, .gpio_pin = 9U, .pinint_selector = 2U, .pinint_mask = PININTCH2, .irqn = PIN_INT2_IRQn},
    [3] = {.tecla = TECLA4, .scu_port = 1U, .scu_pin = 6U, .scu_mode = (MD_PUP | MD_EZI | MD_ZI), .scu_func = FUNC0, .gpio_port = 1U, .gpio_pin = 9U, .pinint_selector = 3U, .pinint_mask = PININTCH3, .irqn = PIN_INT3_IRQn},
}

Definition at line 41 of file buttons_driver.c.

Referenced by button_esta_presionado(), button_get_event(), and buttons_init().