/* * 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_ */