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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <glib.h> | |
21 | #include <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | #include "libsigrok.h" | |
27 | #include "libsigrok-internal.h" | |
28 | #include "fluke-dmm.h" | |
29 | ||
30 | static const int32_t hwopts[] = { | |
31 | SR_CONF_CONN, | |
32 | SR_CONF_SERIALCOMM, | |
33 | }; | |
34 | ||
35 | static const int32_t hwcaps[] = { | |
36 | SR_CONF_MULTIMETER, | |
37 | SR_CONF_LIMIT_SAMPLES, | |
38 | SR_CONF_LIMIT_MSEC, | |
39 | SR_CONF_CONTINUOUS, | |
40 | }; | |
41 | ||
42 | SR_PRIV struct sr_dev_driver flukedmm_driver_info; | |
43 | static struct sr_dev_driver *di = &flukedmm_driver_info; | |
44 | ||
45 | static char *scan_conn[] = { | |
46 | /* 287/289 */ | |
47 | "115200/8n1", | |
48 | /* 187/189 */ | |
49 | "9600/8n1", | |
50 | /* Scopemeter 190 series */ | |
51 | "1200/8n1", | |
52 | NULL | |
53 | }; | |
54 | ||
55 | static const struct flukedmm_profile supported_flukedmm[] = { | |
56 | { FLUKE_187, "187", 100, 1000 }, | |
57 | { FLUKE_287, "287", 100, 1000 }, | |
58 | { FLUKE_190, "199B", 1000, 3500 }, | |
59 | }; | |
60 | ||
61 | ||
62 | /* Properly close and free all devices. */ | |
63 | static int clear_instances(void) | |
64 | { | |
65 | struct sr_dev_inst *sdi; | |
66 | struct drv_context *drvc; | |
67 | struct dev_context *devc; | |
68 | struct sr_serial_dev_inst *serial; | |
69 | GSList *l; | |
70 | ||
71 | if (!(drvc = di->priv)) | |
72 | return SR_OK; | |
73 | ||
74 | drvc = di->priv; | |
75 | for (l = drvc->instances; l; l = l->next) { | |
76 | if (!(sdi = l->data)) | |
77 | continue; | |
78 | if (!(devc = sdi->priv)) | |
79 | continue; | |
80 | serial = sdi->conn; | |
81 | sr_serial_dev_inst_free(serial); | |
82 | sr_dev_inst_free(sdi); | |
83 | } | |
84 | g_slist_free(drvc->instances); | |
85 | drvc->instances = NULL; | |
86 | ||
87 | return SR_OK; | |
88 | } | |
89 | ||
90 | static int init(struct sr_context *sr_ctx) | |
91 | { | |
92 | return std_hw_init(sr_ctx, di, LOG_PREFIX); | |
93 | } | |
94 | ||
95 | static GSList *fluke_scan(const char *conn, const char *serialcomm) | |
96 | { | |
97 | struct sr_dev_inst *sdi; | |
98 | struct drv_context *drvc; | |
99 | struct dev_context *devc; | |
100 | struct sr_probe *probe; | |
101 | struct sr_serial_dev_inst *serial; | |
102 | GSList *devices; | |
103 | int retry, len, i, s; | |
104 | char buf[128], *b, **tokens; | |
105 | ||
106 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
107 | return NULL; | |
108 | ||
109 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
110 | return NULL; | |
111 | ||
112 | drvc = di->priv; | |
113 | b = buf; | |
114 | retry = 0; | |
115 | devices = NULL; | |
116 | /* We'll try the discovery sequence three times in case the device | |
117 | * is not in an idle state when we send ID. */ | |
118 | while (!devices && retry < 3) { | |
119 | retry++; | |
120 | serial_flush(serial); | |
121 | if (serial_write(serial, "ID\r", 3) == -1) { | |
122 | sr_err("Unable to send ID string: %s.", | |
123 | strerror(errno)); | |
124 | continue; | |
125 | } | |
126 | ||
127 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, | |
128 | * or '1' to signify an error. */ | |
129 | len = 128; | |
130 | serial_readline(serial, &b, &len, 150); | |
131 | if (len != 1) | |
132 | continue; | |
133 | if (buf[0] != '0') | |
134 | continue; | |
135 | ||
136 | /* If CMD_ACK was OK, ID string follows. */ | |
137 | len = 128; | |
138 | serial_readline(serial, &b, &len, 850); | |
139 | if (len < 10) | |
140 | continue; | |
141 | if (strcspn(buf, ",") < 15) | |
142 | /* Looks like it's comma-separated. */ | |
143 | tokens = g_strsplit(buf, ",", 3); | |
144 | else | |
145 | /* Fluke 199B, at least, uses semicolon. */ | |
146 | tokens = g_strsplit(buf, ";", 3); | |
147 | if (!strncmp("FLUKE", tokens[0], 5) | |
148 | && tokens[1] && tokens[2]) { | |
149 | for (i = 0; supported_flukedmm[i].model; i++) { | |
150 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
151 | continue; | |
152 | /* Skip leading spaces in version number. */ | |
153 | for (s = 0; tokens[1][s] == ' '; s++); | |
154 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke", | |
155 | tokens[0] + 6, tokens[1] + s))) | |
156 | return NULL; | |
157 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
158 | sr_err("Device context malloc failed."); | |
159 | return NULL; | |
160 | } | |
161 | devc->profile = &supported_flukedmm[i]; | |
162 | sdi->conn = serial; | |
163 | sdi->priv = devc; | |
164 | sdi->driver = di; | |
165 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
166 | return NULL; | |
167 | sdi->probes = g_slist_append(sdi->probes, probe); | |
168 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
169 | devices = g_slist_append(devices, sdi); | |
170 | break; | |
171 | } | |
172 | } | |
173 | g_strfreev(tokens); | |
174 | if (devices) | |
175 | /* Found one. */ | |
176 | break; | |
177 | } | |
178 | serial_close(serial); | |
179 | if (!devices) | |
180 | sr_serial_dev_inst_free(serial); | |
181 | ||
182 | return devices; | |
183 | } | |
184 | ||
185 | static GSList *scan(GSList *options) | |
186 | { | |
187 | struct sr_config *src; | |
188 | GSList *l, *devices; | |
189 | int i; | |
190 | const char *conn, *serialcomm; | |
191 | ||
192 | conn = serialcomm = NULL; | |
193 | for (l = options; l; l = l->next) { | |
194 | src = l->data; | |
195 | switch (src->key) { | |
196 | case SR_CONF_CONN: | |
197 | conn = g_variant_get_string(src->data, NULL); | |
198 | break; | |
199 | case SR_CONF_SERIALCOMM: | |
200 | serialcomm = g_variant_get_string(src->data, NULL); | |
201 | break; | |
202 | } | |
203 | } | |
204 | if (!conn) | |
205 | return NULL; | |
206 | ||
207 | if (serialcomm) { | |
208 | /* Use the provided comm specs. */ | |
209 | devices = fluke_scan(conn, serialcomm); | |
210 | } else { | |
211 | for (i = 0; scan_conn[i]; i++) { | |
212 | if ((devices = fluke_scan(conn, scan_conn[i]))) | |
213 | break; | |
214 | /* The Scopemeter 199B, at least, requires this | |
215 | * after all the 115k/9.6k confusion. */ | |
216 | g_usleep(5000); | |
217 | } | |
218 | } | |
219 | ||
220 | return devices; | |
221 | } | |
222 | ||
223 | static GSList *dev_list(void) | |
224 | { | |
225 | return ((struct drv_context *)(di->priv))->instances; | |
226 | } | |
227 | ||
228 | static int dev_open(struct sr_dev_inst *sdi) | |
229 | { | |
230 | struct sr_serial_dev_inst *serial; | |
231 | ||
232 | serial = sdi->conn; | |
233 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
234 | return SR_ERR; | |
235 | ||
236 | sdi->status = SR_ST_ACTIVE; | |
237 | ||
238 | return SR_OK; | |
239 | } | |
240 | ||
241 | static int dev_close(struct sr_dev_inst *sdi) | |
242 | { | |
243 | struct sr_serial_dev_inst *serial; | |
244 | ||
245 | serial = sdi->conn; | |
246 | if (serial && serial->fd != -1) { | |
247 | serial_close(serial); | |
248 | sdi->status = SR_ST_INACTIVE; | |
249 | } | |
250 | ||
251 | return SR_OK; | |
252 | } | |
253 | ||
254 | static int cleanup(void) | |
255 | { | |
256 | ||
257 | clear_instances(); | |
258 | ||
259 | return SR_OK; | |
260 | } | |
261 | ||
262 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
263 | { | |
264 | struct dev_context *devc; | |
265 | ||
266 | if (sdi->status != SR_ST_ACTIVE) | |
267 | return SR_ERR_DEV_CLOSED; | |
268 | ||
269 | if (!(devc = sdi->priv)) { | |
270 | sr_err("sdi->priv was NULL."); | |
271 | return SR_ERR_BUG; | |
272 | } | |
273 | ||
274 | switch (id) { | |
275 | case SR_CONF_LIMIT_MSEC: | |
276 | /* TODO: not yet implemented */ | |
277 | if (g_variant_get_uint64(data) == 0) { | |
278 | sr_err("LIMIT_MSEC can't be 0."); | |
279 | return SR_ERR; | |
280 | } | |
281 | devc->limit_msec = g_variant_get_uint64(data); | |
282 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
283 | devc->limit_msec); | |
284 | break; | |
285 | case SR_CONF_LIMIT_SAMPLES: | |
286 | devc->limit_samples = g_variant_get_uint64(data); | |
287 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
288 | devc->limit_samples); | |
289 | break; | |
290 | default: | |
291 | return SR_ERR_NA; | |
292 | } | |
293 | ||
294 | return SR_OK; | |
295 | } | |
296 | ||
297 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
298 | { | |
299 | ||
300 | (void)sdi; | |
301 | ||
302 | switch (key) { | |
303 | case SR_CONF_SCAN_OPTIONS: | |
304 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
305 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
306 | break; | |
307 | case SR_CONF_DEVICE_OPTIONS: | |
308 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
309 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
310 | break; | |
311 | default: | |
312 | return SR_ERR_NA; | |
313 | } | |
314 | ||
315 | return SR_OK; | |
316 | } | |
317 | ||
318 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
319 | { | |
320 | struct dev_context *devc; | |
321 | struct sr_serial_dev_inst *serial; | |
322 | ||
323 | if (sdi->status != SR_ST_ACTIVE) | |
324 | return SR_ERR_DEV_CLOSED; | |
325 | ||
326 | if (!(devc = sdi->priv)) { | |
327 | sr_err("sdi->priv was NULL."); | |
328 | return SR_ERR_BUG; | |
329 | } | |
330 | ||
331 | devc->cb_data = cb_data; | |
332 | ||
333 | /* Send header packet to the session bus. */ | |
334 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
335 | ||
336 | /* Poll every 100ms, or whenever some data comes in. */ | |
337 | serial = sdi->conn; | |
338 | sr_source_add(serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi); | |
339 | ||
340 | if (serial_write(serial, "QM\r", 3) == -1) { | |
341 | sr_err("Unable to send QM: %s.", strerror(errno)); | |
342 | return SR_ERR; | |
343 | } | |
344 | devc->cmd_sent_at = g_get_monotonic_time() / 1000; | |
345 | devc->expect_response = TRUE; | |
346 | ||
347 | return SR_OK; | |
348 | } | |
349 | ||
350 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
351 | { | |
352 | return std_hw_dev_acquisition_stop_serial(sdi, cb_data, dev_close, | |
353 | sdi->conn, LOG_PREFIX); | |
354 | } | |
355 | ||
356 | SR_PRIV struct sr_dev_driver flukedmm_driver_info = { | |
357 | .name = "fluke-dmm", | |
358 | .longname = "Fluke 18x/28x series DMMs", | |
359 | .api_version = 1, | |
360 | .init = init, | |
361 | .cleanup = cleanup, | |
362 | .scan = scan, | |
363 | .dev_list = dev_list, | |
364 | .dev_clear = clear_instances, | |
365 | .config_get = NULL, | |
366 | .config_set = config_set, | |
367 | .config_list = config_list, | |
368 | .dev_open = dev_open, | |
369 | .dev_close = dev_close, | |
370 | .dev_acquisition_start = dev_acquisition_start, | |
371 | .dev_acquisition_stop = dev_acquisition_stop, | |
372 | .priv = NULL, | |
373 | }; |