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1 | /* | |
2 | * This file is part of the sigrok 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 | GSList *l; | |
69 | ||
70 | if (!(drvc = di->priv)) | |
71 | return SR_OK; | |
72 | ||
73 | drvc = di->priv; | |
74 | for (l = drvc->instances; l; l = l->next) { | |
75 | if (!(sdi = l->data)) | |
76 | continue; | |
77 | if (!(devc = sdi->priv)) | |
78 | continue; | |
79 | sr_serial_dev_inst_free(devc->serial); | |
80 | sr_dev_inst_free(sdi); | |
81 | } | |
82 | g_slist_free(drvc->instances); | |
83 | drvc->instances = NULL; | |
84 | ||
85 | return SR_OK; | |
86 | } | |
87 | ||
88 | static int hw_init(struct sr_context *sr_ctx) | |
89 | { | |
90 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
91 | } | |
92 | ||
93 | static GSList *fluke_scan(const char *conn, const char *serialcomm) | |
94 | { | |
95 | struct sr_dev_inst *sdi; | |
96 | struct drv_context *drvc; | |
97 | struct dev_context *devc; | |
98 | struct sr_probe *probe; | |
99 | struct sr_serial_dev_inst *serial; | |
100 | GSList *devices; | |
101 | int retry, len, i, s; | |
102 | char buf[128], *b, **tokens; | |
103 | ||
104 | if (!(serial = sr_serial_dev_inst_new(conn, serialcomm))) | |
105 | return NULL; | |
106 | ||
107 | if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
108 | return NULL; | |
109 | ||
110 | drvc = di->priv; | |
111 | b = buf; | |
112 | retry = 0; | |
113 | devices = NULL; | |
114 | /* We'll try the discovery sequence three times in case the device | |
115 | * is not in an idle state when we send ID. */ | |
116 | while (!devices && retry < 3) { | |
117 | retry++; | |
118 | serial_flush(serial); | |
119 | if (serial_write(serial, "ID\r", 3) == -1) { | |
120 | sr_err("Unable to send ID string: %s.", | |
121 | strerror(errno)); | |
122 | continue; | |
123 | } | |
124 | ||
125 | /* Response is first a CMD_ACK byte (ASCII '0' for OK, | |
126 | * or '1' to signify an error. */ | |
127 | len = 128; | |
128 | serial_readline(serial, &b, &len, 150); | |
129 | if (len != 1) | |
130 | continue; | |
131 | if (buf[0] != '0') | |
132 | continue; | |
133 | ||
134 | /* If CMD_ACK was OK, ID string follows. */ | |
135 | len = 128; | |
136 | serial_readline(serial, &b, &len, 850); | |
137 | if (len < 10) | |
138 | continue; | |
139 | if (strcspn(buf, ",") < 15) | |
140 | /* Looks like it's comma-separated. */ | |
141 | tokens = g_strsplit(buf, ",", 3); | |
142 | else | |
143 | /* Fluke 199B, at least, uses semicolon. */ | |
144 | tokens = g_strsplit(buf, ";", 3); | |
145 | if (!strncmp("FLUKE", tokens[0], 5) | |
146 | && tokens[1] && tokens[2]) { | |
147 | for (i = 0; supported_flukedmm[i].model; i++) { | |
148 | if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6)) | |
149 | continue; | |
150 | /* Skip leading spaces in version number. */ | |
151 | for (s = 0; tokens[1][s] == ' '; s++); | |
152 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke", | |
153 | tokens[0] + 6, tokens[1] + s))) | |
154 | return NULL; | |
155 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
156 | sr_err("Device context malloc failed."); | |
157 | return NULL; | |
158 | } | |
159 | devc->profile = &supported_flukedmm[i]; | |
160 | devc->serial = serial; | |
161 | sdi->priv = devc; | |
162 | sdi->driver = di; | |
163 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
164 | return NULL; | |
165 | sdi->probes = g_slist_append(sdi->probes, probe); | |
166 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
167 | devices = g_slist_append(devices, sdi); | |
168 | break; | |
169 | } | |
170 | } | |
171 | g_strfreev(tokens); | |
172 | if (devices) | |
173 | /* Found one. */ | |
174 | break; | |
175 | } | |
176 | serial_close(serial); | |
177 | if (!devices) | |
178 | sr_serial_dev_inst_free(serial); | |
179 | ||
180 | return devices; | |
181 | } | |
182 | ||
183 | static GSList *hw_scan(GSList *options) | |
184 | { | |
185 | struct sr_config *src; | |
186 | GSList *l, *devices; | |
187 | int i; | |
188 | const char *conn, *serialcomm; | |
189 | ||
190 | conn = serialcomm = NULL; | |
191 | for (l = options; l; l = l->next) { | |
192 | src = l->data; | |
193 | switch (src->key) { | |
194 | case SR_CONF_CONN: | |
195 | conn = g_variant_get_string(src->data, NULL); | |
196 | break; | |
197 | case SR_CONF_SERIALCOMM: | |
198 | serialcomm = g_variant_get_string(src->data, NULL); | |
199 | break; | |
200 | } | |
201 | } | |
202 | if (!conn) | |
203 | return NULL; | |
204 | ||
205 | if (serialcomm) { | |
206 | /* Use the provided comm specs. */ | |
207 | devices = fluke_scan(conn, serialcomm); | |
208 | } else { | |
209 | for (i = 0; scan_conn[i]; i++) { | |
210 | if ((devices = fluke_scan(conn, scan_conn[i]))) | |
211 | break; | |
212 | /* The Scopemeter 199B, at least, requires this | |
213 | * after all the 115k/9.6k confusion. */ | |
214 | g_usleep(5000); | |
215 | } | |
216 | } | |
217 | ||
218 | return devices; | |
219 | } | |
220 | ||
221 | static GSList *hw_dev_list(void) | |
222 | { | |
223 | return ((struct drv_context *)(di->priv))->instances; | |
224 | } | |
225 | ||
226 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
227 | { | |
228 | struct dev_context *devc; | |
229 | ||
230 | if (!(devc = sdi->priv)) { | |
231 | sr_err("sdi->priv was NULL."); | |
232 | return SR_ERR_BUG; | |
233 | } | |
234 | ||
235 | if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK) | |
236 | return SR_ERR; | |
237 | ||
238 | sdi->status = SR_ST_ACTIVE; | |
239 | ||
240 | return SR_OK; | |
241 | } | |
242 | ||
243 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
244 | { | |
245 | struct dev_context *devc; | |
246 | ||
247 | devc = sdi->priv; | |
248 | ||
249 | if (devc->serial && devc->serial->fd != -1) { | |
250 | serial_close(devc->serial); | |
251 | sdi->status = SR_ST_INACTIVE; | |
252 | } | |
253 | ||
254 | return SR_OK; | |
255 | } | |
256 | ||
257 | static int hw_cleanup(void) | |
258 | { | |
259 | ||
260 | clear_instances(); | |
261 | ||
262 | return SR_OK; | |
263 | } | |
264 | ||
265 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
266 | { | |
267 | struct dev_context *devc; | |
268 | ||
269 | if (sdi->status != SR_ST_ACTIVE) | |
270 | return SR_ERR; | |
271 | ||
272 | if (!(devc = sdi->priv)) { | |
273 | sr_err("sdi->priv was NULL."); | |
274 | return SR_ERR_BUG; | |
275 | } | |
276 | ||
277 | switch (id) { | |
278 | case SR_CONF_LIMIT_MSEC: | |
279 | /* TODO: not yet implemented */ | |
280 | if (g_variant_get_uint64(data) == 0) { | |
281 | sr_err("LIMIT_MSEC can't be 0."); | |
282 | return SR_ERR; | |
283 | } | |
284 | devc->limit_msec = g_variant_get_uint64(data); | |
285 | sr_dbg("Setting time limit to %" PRIu64 "ms.", | |
286 | devc->limit_msec); | |
287 | break; | |
288 | case SR_CONF_LIMIT_SAMPLES: | |
289 | devc->limit_samples = g_variant_get_uint64(data); | |
290 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
291 | devc->limit_samples); | |
292 | break; | |
293 | default: | |
294 | return SR_ERR_NA; | |
295 | } | |
296 | ||
297 | return SR_OK; | |
298 | } | |
299 | ||
300 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
301 | { | |
302 | ||
303 | (void)sdi; | |
304 | ||
305 | switch (key) { | |
306 | case SR_CONF_SCAN_OPTIONS: | |
307 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
308 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
309 | break; | |
310 | case SR_CONF_DEVICE_OPTIONS: | |
311 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
312 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
313 | break; | |
314 | default: | |
315 | return SR_ERR_NA; | |
316 | } | |
317 | ||
318 | return SR_OK; | |
319 | } | |
320 | ||
321 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
322 | void *cb_data) | |
323 | { | |
324 | struct dev_context *devc; | |
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, DRIVER_LOG_DOMAIN); | |
335 | ||
336 | /* Poll every 100ms, or whenever some data comes in. */ | |
337 | sr_source_add(devc->serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi); | |
338 | ||
339 | if (serial_write(devc->serial, "QM\r", 3) == -1) { | |
340 | sr_err("Unable to send QM: %s.", strerror(errno)); | |
341 | return SR_ERR; | |
342 | } | |
343 | devc->cmd_sent_at = g_get_monotonic_time() / 1000; | |
344 | devc->expect_response = TRUE; | |
345 | ||
346 | return SR_OK; | |
347 | } | |
348 | ||
349 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
350 | { | |
351 | return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close, | |
352 | ((struct dev_context *)(sdi->priv))->serial, DRIVER_LOG_DOMAIN); | |
353 | } | |
354 | ||
355 | SR_PRIV struct sr_dev_driver flukedmm_driver_info = { | |
356 | .name = "fluke-dmm", | |
357 | .longname = "Fluke 18x/28x series DMMs", | |
358 | .api_version = 1, | |
359 | .init = hw_init, | |
360 | .cleanup = hw_cleanup, | |
361 | .scan = hw_scan, | |
362 | .dev_list = hw_dev_list, | |
363 | .dev_clear = clear_instances, | |
364 | .config_get = NULL, | |
365 | .config_set = config_set, | |
366 | .config_list = config_list, | |
367 | .dev_open = hw_dev_open, | |
368 | .dev_close = hw_dev_close, | |
369 | .dev_acquisition_start = hw_dev_acquisition_start, | |
370 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
371 | .priv = NULL, | |
372 | }; |