44 строки
1.5 KiB
C
44 строки
1.5 KiB
C
/*
|
|
* GPIO tools - utility helpers library for the GPIO tools
|
|
*
|
|
* Copyright (C) 2015 Linus Walleij
|
|
*
|
|
* Portions copied from iio_utils and lssio:
|
|
* Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
|
|
* Copyright (c) 2008 Jonathan Cameron
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*/
|
|
#ifndef _GPIO_UTILS_H_
|
|
#define _GPIO_UTILS_H_
|
|
|
|
#include <string.h>
|
|
|
|
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
|
|
|
|
static inline int check_prefix(const char *str, const char *prefix)
|
|
{
|
|
return strlen(str) > strlen(prefix) &&
|
|
strncmp(str, prefix, strlen(prefix)) == 0;
|
|
}
|
|
|
|
int gpiotools_request_linehandle(const char *device_name, unsigned int *lines,
|
|
unsigned int nlines, unsigned int flag,
|
|
struct gpiohandle_data *data,
|
|
const char *consumer_label);
|
|
int gpiotools_set_values(const int fd, struct gpiohandle_data *data);
|
|
int gpiotools_get_values(const int fd, struct gpiohandle_data *data);
|
|
int gpiotools_release_linehandle(const int fd);
|
|
|
|
int gpiotools_get(const char *device_name, unsigned int line);
|
|
int gpiotools_gets(const char *device_name, unsigned int *lines,
|
|
unsigned int nlines, struct gpiohandle_data *data);
|
|
int gpiotools_set(const char *device_name, unsigned int line,
|
|
unsigned int value);
|
|
int gpiotools_sets(const char *device_name, unsigned int *lines,
|
|
unsigned int nlines, struct gpiohandle_data *data);
|
|
|
|
#endif /* _GPIO_UTILS_H_ */
|