159 lines
3.3 KiB
C
159 lines
3.3 KiB
C
/*
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* Industrial I/O utilities - lsiio.c
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*
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* Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <string.h>
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#include <dirent.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/dir.h>
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#include "iio_utils.h"
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static enum verbosity {
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VERBLEVEL_DEFAULT, /* 0 gives lspci behaviour */
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VERBLEVEL_SENSORS, /* 1 lists sensors */
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} verblevel = VERBLEVEL_DEFAULT;
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const char *type_device = "iio:device";
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const char *type_trigger = "trigger";
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static inline int check_prefix(const char *str, const char *prefix)
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{
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return strlen(str) > strlen(prefix) &&
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strncmp(str, prefix, strlen(prefix)) == 0;
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}
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static inline int check_postfix(const char *str, const char *postfix)
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{
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return strlen(str) > strlen(postfix) &&
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strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
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}
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static int dump_channels(const char *dev_dir_name)
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{
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DIR *dp;
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const struct dirent *ent;
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dp = opendir(dev_dir_name);
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if (dp == NULL)
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return -errno;
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while (ent = readdir(dp), ent != NULL)
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if (check_prefix(ent->d_name, "in_") &&
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check_postfix(ent->d_name, "_raw")) {
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printf(" %-10s\n", ent->d_name);
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}
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return 0;
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}
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static int dump_one_device(const char *dev_dir_name)
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{
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char name[IIO_MAX_NAME_LENGTH];
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int dev_idx;
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int retval;
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retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_device),
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"%i", &dev_idx);
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if (retval != 1)
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return -EINVAL;
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read_sysfs_string("name", dev_dir_name, name);
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printf("Device %03d: %s\n", dev_idx, name);
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if (verblevel >= VERBLEVEL_SENSORS)
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return dump_channels(dev_dir_name);
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return 0;
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}
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static int dump_one_trigger(const char *dev_dir_name)
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{
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char name[IIO_MAX_NAME_LENGTH];
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int dev_idx;
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int retval;
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retval = sscanf(dev_dir_name + strlen(iio_dir) + strlen(type_trigger),
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"%i", &dev_idx);
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if (retval != 1)
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return -EINVAL;
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read_sysfs_string("name", dev_dir_name, name);
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printf("Trigger %03d: %s\n", dev_idx, name);
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return 0;
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}
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static void dump_devices(void)
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{
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const struct dirent *ent;
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DIR *dp;
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dp = opendir(iio_dir);
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if (dp == NULL) {
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printf("No industrial I/O devices available\n");
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return;
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}
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while (ent = readdir(dp), ent != NULL) {
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if (check_prefix(ent->d_name, type_device)) {
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char *dev_dir_name;
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asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name);
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dump_one_device(dev_dir_name);
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free(dev_dir_name);
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if (verblevel >= VERBLEVEL_SENSORS)
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printf("\n");
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}
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}
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rewinddir(dp);
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while (ent = readdir(dp), ent != NULL) {
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if (check_prefix(ent->d_name, type_trigger)) {
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char *dev_dir_name;
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asprintf(&dev_dir_name, "%s%s", iio_dir, ent->d_name);
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dump_one_trigger(dev_dir_name);
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free(dev_dir_name);
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}
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}
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closedir(dp);
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}
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int main(int argc, char **argv)
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{
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int c, err = 0;
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while ((c = getopt(argc, argv, "d:D:v")) != EOF) {
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switch (c) {
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case 'v':
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verblevel++;
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break;
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case '?':
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default:
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err++;
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break;
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}
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}
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if (err || argc > optind) {
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fprintf(stderr, "Usage: lsiio [options]...\n"
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"List industrial I/O devices\n"
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" -v, --verbose\n"
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" Increase verbosity (may be given multiple times)\n"
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);
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exit(1);
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}
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dump_devices();
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return 0;
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}
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