/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _IIO_UTILS_H_
#define _IIO_UTILS_H_
/* IIO - useful set of util functionality
*
* Copyright ( c ) 2008 Jonathan Cameron
*/
#include <stdint.h>
/* Made up value to limit allocation sizes */
#define IIO_MAX_NAME_LENGTH 64
#define FORMAT_SCAN_ELEMENTS_DIR "%s/buffer%d"
#define FORMAT_EVENTS_DIR "%s/events"
#define FORMAT_TYPE_FILE "%s_type"
#define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr[0 ]))
extern const char *iio_dir;
/**
* struct iio_channel_info - information about a given channel
* @ name : channel name
* @ generic_name : general name for channel type
* @ scale : scale factor to be applied for conversion to si units
* @ offset : offset to be applied for conversion to si units
* @ index : the channel index in the buffer output
* @ bytes : number of bytes occupied in buffer output
* @ bits_used : number of valid bits of data
* @ shift : amount of bits to shift right data before applying bit mask
* @ mask : a bit mask for the raw output
* @ be : flag if data is big endian
* @ is_signed : is the raw value stored signed
* @ location : data offset for this channel inside the buffer ( in bytes )
**/
struct iio_channel_info {
char *name;
char *generic_name;
float scale;
float offset;
unsigned index;
unsigned bytes;
unsigned bits_used;
unsigned shift;
uint64_t mask;
unsigned be;
unsigned is_signed;
unsigned location;
};
static inline int iioutils_check_suffix(const char *str, const char *suffix)
{
return strlen(str) >= strlen(suffix) &&
strncmp(str+strlen(str)-strlen(suffix),
suffix, strlen(suffix)) == 0 ;
}
int iioutils_break_up_name(const char *full_name, char **generic_name);
int iioutils_get_param_float(float *output, const char *param_name,
const char *device_dir, const char *name,
const char *generic_name);
void bsort_channel_array_by_index(struct iio_channel_info *ci_array, int cnt);
int build_channel_array(const char *device_dir, int buffer_idx,
struct iio_channel_info **ci_array, int *counter);
int find_type_by_name(const char *name, const char *type);
int write_sysfs_int(const char *filename, const char *basedir, int val);
int write_sysfs_int_and_verify(const char *filename, const char *basedir,
int val);
int write_sysfs_string_and_verify(const char *filename, const char *basedir,
const char *val);
int write_sysfs_string(const char *filename, const char *basedir,
const char *val);
int read_sysfs_posint(const char *filename, const char *basedir);
int read_sysfs_float(const char *filename, const char *basedir, float *val);
int read_sysfs_string(const char *filename, const char *basedir, char *str);
#endif /* _IIO_UTILS_H_ */
Messung V0.5 in Prozent C=93 H=95 G=93
¤ Dauer der Verarbeitung: 0.2 Sekunden
¤
*© Formatika GbR, Deutschland