2 * collectd - src/onewire.c
3 * Copyright (C) 2008 noris network AG
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at noris.net>
25 #include "utils_ignorelist.h"
29 #define OW_FAMILY_LENGTH 8
30 #define OW_FAMILY_MAX_FEATURES 2
31 struct ow_family_features_s
33 char family[OW_FAMILY_LENGTH];
36 char filename[DATA_MAX_NAME_LEN];
37 char type[DATA_MAX_NAME_LEN];
38 char type_instance[DATA_MAX_NAME_LEN];
39 } features[OW_FAMILY_MAX_FEATURES];
42 typedef struct ow_family_features_s ow_family_features_t;
44 /* see http://owfs.sourceforge.net/ow_table.html for a list of families */
45 static ow_family_features_t ow_family_features[] =
47 { /* DS18S20 Precision Thermometer and DS1920 ibutton */
51 /* filename = */ "temperature",
52 /* type = */ "temperature",
53 /* type_instance = */ ""
56 /* features_num = */ 1
58 { /* DS1822 Econo Thermometer */
62 /* filename = */ "temperature",
63 /* type = */ "temperature",
64 /* type_instance = */ ""
67 /* features_num = */ 1
69 { /* DS18B20 Programmable Resolution Thermometer */
73 /* filename = */ "temperature",
74 /* type = */ "temperature",
75 /* type_instance = */ ""
78 /* features_num = */ 1
80 { /* DS2436 Volts/Temp */
84 /* filename = */ "temperature",
85 /* type = */ "temperature",
86 /* type_instance = */ ""
89 /* features_num = */ 1
91 { /* DS2438 Volts/Temp */
95 /* filename = */ "temperature",
96 /* type = */ "temperature",
97 /* type_instance = */ ""
100 /* features_num = */ 1
103 static int ow_family_features_num = STATIC_ARRAY_SIZE (ow_family_features);
105 static char *device_g = NULL;
106 static cdtime_t ow_interval = 0;
108 static const char *config_keys[] =
115 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
117 static ignorelist_t *sensor_list;
119 static int cow_load_config (const char *key, const char *value)
121 if (sensor_list == NULL)
122 sensor_list = ignorelist_create (1);
124 if (strcasecmp (key, "Sensor") == 0)
126 if (ignorelist_add (sensor_list, value))
128 ERROR ("sensors plugin: "
129 "Cannot add value to ignorelist.");
133 else if (strcasecmp (key, "IgnoreSelected") == 0)
135 ignorelist_set_invert (sensor_list, 1);
137 ignorelist_set_invert (sensor_list, 0);
139 else if (strcasecmp (key, "Device") == 0)
142 temp = strdup (value);
145 ERROR ("onewire plugin: strdup failed.");
151 else if (strcasecmp ("Interval", key) == 0)
156 ow_interval = DOUBLE_TO_CDTIME_T (tmp);
158 ERROR ("onewire plugin: Invalid `Interval' setting: %s", value);
168 static int cow_read_values (const char *path, const char *name,
169 const ow_family_features_t *family_info)
172 value_list_t vl = VALUE_LIST_INIT;
176 if (sensor_list != NULL)
178 DEBUG ("onewire plugin: Checking ignorelist for `%s'", name);
179 if (ignorelist_match (sensor_list, name) != 0)
186 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
187 sstrncpy (vl.plugin, "onewire", sizeof (vl.plugin));
188 sstrncpy (vl.plugin_instance, name, sizeof (vl.plugin_instance));
190 for (i = 0; i < family_info->features_num; i++)
199 snprintf (file, sizeof (file), "%s/%s",
200 path, family_info->features[i].filename);
201 file[sizeof (file) - 1] = 0;
205 status = OW_get (file, &buffer, &buffer_size);
208 ERROR ("onewire plugin: OW_get (%s/%s) failed. status = %#x;",
209 path, family_info->features[i].filename, status);
214 values[0].gauge = strtod (buffer, &endptr);
217 ERROR ("onewire plugin: Buffer is not a number: %s", buffer);
222 sstrncpy (vl.type, family_info->features[i].type, sizeof (vl.type));
223 sstrncpy (vl.type_instance, family_info->features[i].type_instance,
224 sizeof (vl.type_instance));
226 plugin_dispatch_values (&vl);
230 } /* for (i = 0; i < features_num; i++) */
232 return ((success > 0) ? 0 : -1);
233 } /* int cow_read_values */
235 /* Forward declaration so the recursion below works */
236 static int cow_read_bus (const char *path);
242 * - DS2409 - MicroLAN Coupler
244 static int cow_read_ds2409 (const char *path)
249 status = ssnprintf (subpath, sizeof (subpath), "%s/main", path);
250 if ((status > 0) && (status < sizeof (subpath)))
251 cow_read_bus (subpath);
253 status = ssnprintf (subpath, sizeof (subpath), "%s/aux", path);
254 if ((status > 0) && (status < sizeof (subpath)))
255 cow_read_bus (subpath);
258 } /* int cow_read_ds2409 */
260 static int cow_read_bus (const char *path)
271 status = OW_get (path, &buffer, &buffer_size);
274 ERROR ("onewire plugin: OW_get (%s) failed. status = %#x;",
278 DEBUG ("onewire plugin: OW_get (%s) returned: %s",
283 while ((buffer_ptr = strtok_r (dummy, ",/", &saveptr)) != NULL)
289 if (strcmp ("/", path) == 0)
290 status = ssnprintf (subpath, sizeof (subpath), "/%s", buffer_ptr);
292 status = ssnprintf (subpath, sizeof (subpath), "%s/%s",
294 if ((status <= 0) || (status >= sizeof (subpath)))
297 for (i = 0; i < ow_family_features_num; i++)
299 if (strncmp (ow_family_features[i].family, buffer_ptr,
300 strlen (ow_family_features[i].family)) != 0)
303 cow_read_values (subpath,
304 buffer_ptr + strlen (ow_family_features[i].family),
305 ow_family_features + i);
308 if (i < ow_family_features_num)
312 if (strncmp ("1F.", buffer_ptr, strlen ("1F.")) == 0)
314 cow_read_ds2409 (subpath);
317 } /* while (strtok_r) */
321 } /* int cow_read_bus */
323 static int cow_read (user_data_t *ud __attribute__((unused)))
325 return (cow_read_bus ("/"));
328 static int cow_shutdown (void)
331 ignorelist_free (sensor_list);
333 } /* int cow_shutdown */
335 static int cow_init (void)
338 struct timespec cb_interval;
340 if (device_g == NULL)
342 ERROR ("onewire plugin: cow_init: No device configured.");
346 status = (int) OW_init (device_g);
349 ERROR ("onewire plugin: OW_init(%s) failed: %i.", device_g, status);
353 CDTIME_T_TO_TIMESPEC (ow_interval, &cb_interval);
355 plugin_register_complex_read (/* group = */ NULL, "onewire", cow_read,
356 (ow_interval != 0) ? &cb_interval : NULL,
357 /* user data = */ NULL);
358 plugin_register_shutdown ("onewire", cow_shutdown);
363 void module_register (void)
365 plugin_register_init ("onewire", cow_init);
366 plugin_register_config ("onewire", cow_load_config,
367 config_keys, config_keys_num);
370 /* vim: set sw=2 sts=2 ts=8 et fdm=marker cindent : */