maxim_gpio.c File Reference

Implementation of gpio driver. More...

#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include "no_os_gpio.h"
#include "no_os_irq.h"
#include "no_os_util.h"
#include "no_os_alloc.h"
#include "gpio.h"
#include "gpio_regs.h"
#include "maxim_gpio.h"
#include "maxim_irq.h"
#include "max78000.h"
#include "mxc_errors.h"

Include dependency graph for maxim_gpio.c:

Functions
int32_t	max_gpio_get (struct no_os_gpio_desc **desc, const struct no_os_gpio_init_param *param)
	Obtain the GPIO decriptor.
int32_t	max_gpio_get_optional (struct no_os_gpio_desc **desc, const struct no_os_gpio_init_param *param)
	Get the value of an optional GPIO.
int32_t	max_gpio_remove (struct no_os_gpio_desc *desc)
	Free the resources allocated by no_os_gpio_get().
int32_t	max_gpio_direction_input (struct no_os_gpio_desc *desc)
	Enable the input direction of the specified GPIO.
int32_t	max_gpio_direction_output (struct no_os_gpio_desc *desc, uint8_t value)
	Enable the output direction of the specified GPIO.
int32_t	max_gpio_get_direction (struct no_os_gpio_desc *desc, uint8_t *direction)
	Get the direction of the specified GPIO.
int32_t	max_gpio_set_value (struct no_os_gpio_desc *desc, uint8_t value)
	Set the value of the specified GPIO.
int32_t	max_gpio_get_value (struct no_os_gpio_desc *desc, uint8_t *value)
	Get the value of the specified GPIO.

Variables
const struct no_os_gpio_platform_ops	max_gpio_ops
	maxim platform specific GPIO platform ops structure

Detailed Description

Implementation of gpio driver.

Author

Ciprian Regus (cipri.nosp@m.an.r.nosp@m.egus@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2022(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

max_gpio_direction_input()

int32_t max_gpio_direction_input

(

struct no_os_gpio_desc *

desc

)

Enable the input direction of the specified GPIO.

Parameters

desc	- The GPIO descriptor.

Returns

0 in case of success, errno error codes otherwise.

max_gpio_direction_output()

int32_t max_gpio_direction_output	(	struct no_os_gpio_desc *	desc,
		uint8_t	value )

Enable the output direction of the specified GPIO.

Parameters

desc	- The GPIO descriptor.
value	- The value. Example: NO_OS_GPIO_HIGH NO_OS_GPIO_LOW

Returns

0 in case of success, errno error codes otherwise.

max_gpio_get()

int32_t max_gpio_get	(	struct no_os_gpio_desc **	desc,
		const struct no_os_gpio_init_param *	param )

Obtain the GPIO decriptor.

Parameters

desc	- The GPIO descriptor.
param	- GPIO initialization parameters

Returns

0 in case of success, errno error codes otherwise.

max_gpio_get_direction()

int32_t max_gpio_get_direction	(	struct no_os_gpio_desc *	desc,
		uint8_t *	direction )

Get the direction of the specified GPIO.

Parameters

desc	- The GPIO descriptor.
direction	- The direction. Example: NO_OS_GPIO_OUT NO_OS_GPIO_IN

Returns

0 in case of success, errno error codes otherwise.

max_gpio_get_optional()

int32_t max_gpio_get_optional	(	struct no_os_gpio_desc **	desc,
		const struct no_os_gpio_init_param *	param )

Get the value of an optional GPIO.

Parameters

desc	- The GPIO descriptor.
param	- GPIO initialization parameters

Returns

0 in case of success, errno error codes otherwise.

max_gpio_get_value()

int32_t max_gpio_get_value	(	struct no_os_gpio_desc *	desc,
		uint8_t *	value )

Get the value of the specified GPIO.

Parameters

desc	- The GPIO descriptor.
value	- The value. Example: NO_OS_GPIO_HIGH NO_OS_GPIO_LOW

Returns

0 in case of success, errno error codes otherwise.

max_gpio_remove()

int32_t max_gpio_remove

(

struct no_os_gpio_desc *

desc

)

Free the resources allocated by no_os_gpio_get().

Parameters

desc	- The GPIO descriptor.

Returns

0 in case of success, errno error codes otherwise.

max_gpio_set_value()

int32_t max_gpio_set_value	(	struct no_os_gpio_desc *	desc,
		uint8_t	value )

Set the value of the specified GPIO.

Parameters

desc	- The GPIO descriptor.
value	- The value. Example: NO_OS_GPIO_HIGH NO_OS_GPIO_LOW

Returns

0 in case of success, errno error codes otherwise.

Variable Documentation

max_gpio_ops

const struct no_os_gpio_platform_ops max_gpio_ops

Initial value:

= {
    .gpio_ops_get = &max_gpio_get,
    .gpio_ops_get_optional = &max_gpio_get_optional,
    .gpio_ops_remove = &max_gpio_remove,
    .gpio_ops_direction_input = &max_gpio_direction_input,
    .gpio_ops_direction_output = &max_gpio_direction_output,
    .gpio_ops_get_direction = &max_gpio_get_direction,
    .gpio_ops_set_value = &max_gpio_set_value,
    .gpio_ops_get_value = &max_gpio_get_value
}

maxim platform specific GPIO platform ops structure

maxim platform specific gpio platform ops structure