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f4816ac6 ML |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Martin Ling <martin-git@earth.li> | |
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 | ||
e0b7d23c ML |
20 | #include <fcntl.h> |
21 | #include <unistd.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
f4816ac6 ML |
24 | #include <glib.h> |
25 | #include "libsigrok.h" | |
26 | #include "libsigrok-internal.h" | |
27 | #include "protocol.h" | |
28 | ||
e0b7d23c | 29 | static const int hwcaps[] = { |
1953564a BV |
30 | SR_CONF_OSCILLOSCOPE, |
31 | SR_CONF_LIMIT_SAMPLES, | |
32 | SR_CONF_TIMEBASE, | |
33 | SR_CONF_TRIGGER_SOURCE, | |
34 | SR_CONF_TRIGGER_SLOPE, | |
35 | SR_CONF_HORIZ_TRIGGERPOS, | |
36 | SR_CONF_VDIV, | |
37 | SR_CONF_COUPLING, | |
e0b7d23c ML |
38 | 0, |
39 | }; | |
40 | ||
e0b7d23c ML |
41 | static const struct sr_rational timebases[] = { |
42 | /* nanoseconds */ | |
43 | { 2, 1000000000 }, | |
44 | { 5, 1000000000 }, | |
45 | { 10, 1000000000 }, | |
46 | { 20, 1000000000 }, | |
47 | { 50, 1000000000 }, | |
48 | { 100, 1000000000 }, | |
49 | { 500, 1000000000 }, | |
50 | /* microseconds */ | |
51 | { 1, 1000000 }, | |
52 | { 2, 1000000 }, | |
53 | { 5, 1000000 }, | |
54 | { 10, 1000000 }, | |
55 | { 20, 1000000 }, | |
56 | { 50, 1000000 }, | |
57 | { 100, 1000000 }, | |
58 | { 200, 1000000 }, | |
59 | { 500, 1000000 }, | |
60 | /* milliseconds */ | |
61 | { 1, 1000 }, | |
62 | { 2, 1000 }, | |
63 | { 5, 1000 }, | |
64 | { 10, 1000 }, | |
65 | { 20, 1000 }, | |
66 | { 50, 1000 }, | |
67 | { 100, 1000 }, | |
68 | { 200, 1000 }, | |
69 | { 500, 1000 }, | |
70 | /* seconds */ | |
71 | { 1, 1 }, | |
72 | { 2, 1 }, | |
73 | { 5, 1 }, | |
74 | { 10, 1 }, | |
75 | { 20, 1 }, | |
76 | { 50, 1 }, | |
77 | { 0, 0}, | |
78 | }; | |
79 | ||
80 | static const struct sr_rational vdivs[] = { | |
81 | /* millivolts */ | |
82 | { 2, 1000 }, | |
83 | { 5, 1000 }, | |
84 | { 10, 1000 }, | |
85 | { 20, 1000 }, | |
86 | { 50, 1000 }, | |
87 | { 100, 1000 }, | |
88 | { 200, 1000 }, | |
89 | { 500, 1000 }, | |
90 | /* volts */ | |
91 | { 1, 1 }, | |
92 | { 2, 1 }, | |
93 | { 5, 1 }, | |
94 | { 10, 1 }, | |
95 | { 0, 0 }, | |
96 | }; | |
97 | ||
98 | static const char *trigger_sources[] = { | |
99 | "CH1", | |
100 | "CH2", | |
101 | "EXT", | |
102 | "AC Line", | |
103 | NULL, | |
104 | }; | |
105 | ||
106 | static const char *coupling[] = { | |
107 | "AC", | |
108 | "DC", | |
109 | "GND", | |
110 | NULL, | |
111 | }; | |
112 | ||
512bb890 BV |
113 | static const char *supported_models[] = { |
114 | "DS1052E", | |
115 | "DS1102E", | |
116 | "DS1052D", | |
117 | "DS1102D" | |
118 | }; | |
119 | ||
f4816ac6 ML |
120 | SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info; |
121 | static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info; | |
122 | ||
123 | /* Properly close and free all devices. */ | |
124 | static int clear_instances(void) | |
125 | { | |
126 | struct sr_dev_inst *sdi; | |
127 | struct drv_context *drvc; | |
128 | struct dev_context *devc; | |
129 | GSList *l; | |
130 | ||
131 | if (!(drvc = di->priv)) | |
132 | return SR_OK; | |
133 | ||
134 | for (l = drvc->instances; l; l = l->next) { | |
135 | if (!(sdi = l->data)) | |
136 | continue; | |
137 | if (!(devc = sdi->priv)) | |
138 | continue; | |
139 | ||
fb6e5ba8 | 140 | g_free(devc->device); |
69e19dd7 | 141 | g_slist_free(devc->enabled_probes); |
e0b7d23c | 142 | close(devc->fd); |
f4816ac6 ML |
143 | |
144 | sr_dev_inst_free(sdi); | |
145 | } | |
146 | ||
147 | g_slist_free(drvc->instances); | |
148 | drvc->instances = NULL; | |
149 | ||
150 | return SR_OK; | |
151 | } | |
152 | ||
e0b7d23c | 153 | static int hw_init(struct sr_context *sr_ctx) |
f4816ac6 ML |
154 | { |
155 | struct drv_context *drvc; | |
e0b7d23c | 156 | (void)sr_ctx; |
f4816ac6 ML |
157 | |
158 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
159 | sr_err("Driver context malloc failed."); | |
160 | return SR_ERR_MALLOC; | |
161 | } | |
162 | ||
f4816ac6 ML |
163 | di->priv = drvc; |
164 | ||
165 | return SR_OK; | |
166 | } | |
167 | ||
168 | static GSList *hw_scan(GSList *options) | |
169 | { | |
170 | struct drv_context *drvc; | |
e0b7d23c ML |
171 | struct sr_dev_inst *sdi; |
172 | struct dev_context *devc; | |
173 | struct sr_probe *probe; | |
f4816ac6 | 174 | GSList *devices; |
fb6e5ba8 ML |
175 | GDir *dir; |
176 | const gchar *dev_name; | |
177 | const gchar *dev_dir = "/dev/"; | |
178 | const gchar *prefix = "usbtmc"; | |
179 | gchar *device; | |
180 | const gchar *idn_query = "*IDN?"; | |
29d957ce | 181 | int len, num_tokens, fd, i; |
fb6e5ba8 ML |
182 | const gchar *delimiter = ","; |
183 | gchar **tokens; | |
512bb890 BV |
184 | const char *manufacturer, *model, *version; |
185 | int num_models; | |
186 | gboolean matched = FALSE; | |
fb6e5ba8 ML |
187 | char buf[256]; |
188 | ||
f4816ac6 ML |
189 | (void)options; |
190 | ||
191 | devices = NULL; | |
192 | drvc = di->priv; | |
193 | drvc->instances = NULL; | |
194 | ||
fb6e5ba8 | 195 | dir = g_dir_open("/sys/class/usb/", 0, NULL); |
e0b7d23c | 196 | |
fb6e5ba8 ML |
197 | if (dir == NULL) |
198 | return NULL; | |
e0b7d23c | 199 | |
29d957ce | 200 | while ((dev_name = g_dir_read_name(dir)) != NULL) { |
fb6e5ba8 ML |
201 | if (strncmp(dev_name, prefix, strlen(prefix))) |
202 | continue; | |
203 | ||
204 | device = g_strconcat(dev_dir, dev_name, NULL); | |
205 | ||
206 | fd = open(device, O_RDWR); | |
207 | len = write(fd, idn_query, strlen(idn_query)); | |
208 | len = read(fd, buf, sizeof(buf)); | |
209 | close(fd); | |
29d957ce | 210 | if (len == 0) { |
fb6e5ba8 ML |
211 | g_free(device); |
212 | return NULL; | |
213 | } | |
214 | ||
215 | buf[len] = 0; | |
216 | tokens = g_strsplit(buf, delimiter, 0); | |
217 | close(fd); | |
512bb890 | 218 | sr_dbg("response: %s %d [%s]", device, len, buf); |
fb6e5ba8 ML |
219 | |
220 | for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++); | |
221 | ||
512bb890 | 222 | if (num_tokens < 4) { |
fb6e5ba8 ML |
223 | g_strfreev(tokens); |
224 | g_free(device); | |
e0b7d23c | 225 | return NULL; |
fb6e5ba8 | 226 | } |
512bb890 BV |
227 | |
228 | manufacturer = tokens[0]; | |
229 | model = tokens[1]; | |
230 | version = tokens[3]; | |
231 | ||
232 | if (strcmp(manufacturer, "Rigol Technologies")) { | |
233 | g_strfreev(tokens); | |
234 | g_free(device); | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | num_models = sizeof(supported_models) / sizeof(supported_models[0]); | |
239 | ||
240 | for (i = 0; i < num_models; i++) { | |
241 | if (!strcmp(model, supported_models[i])) { | |
242 | matched = 1; | |
243 | break; | |
244 | } | |
245 | } | |
246 | ||
247 | if (!matched || !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, | |
248 | manufacturer, model, version))) { | |
249 | g_strfreev(tokens); | |
250 | g_free(device); | |
251 | return NULL; | |
252 | } | |
253 | ||
fb6e5ba8 ML |
254 | g_strfreev(tokens); |
255 | ||
29d957ce UH |
256 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { |
257 | sr_err("Device context malloc failed."); | |
fb6e5ba8 ML |
258 | g_free(device); |
259 | return NULL; | |
260 | } | |
261 | ||
262 | devc->device = device; | |
263 | ||
264 | sdi->priv = devc; | |
265 | sdi->driver = di; | |
266 | ||
29d957ce UH |
267 | for (i = 0; i < 2; i++) { |
268 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, | |
269 | i == 0 ? "CH1" : "CH2"))) | |
fb6e5ba8 ML |
270 | return NULL; |
271 | sdi->probes = g_slist_append(sdi->probes, probe); | |
272 | } | |
273 | ||
274 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
275 | devices = g_slist_append(devices, sdi); | |
e0b7d23c | 276 | } |
fb6e5ba8 ML |
277 | |
278 | g_dir_close(dir); | |
f4816ac6 ML |
279 | |
280 | return devices; | |
281 | } | |
282 | ||
283 | static GSList *hw_dev_list(void) | |
284 | { | |
285 | struct drv_context *drvc; | |
286 | ||
287 | drvc = di->priv; | |
288 | ||
289 | return drvc->instances; | |
290 | } | |
291 | ||
292 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
293 | { | |
29d957ce UH |
294 | struct dev_context *devc; |
295 | int fd; | |
fb6e5ba8 | 296 | |
29d957ce | 297 | devc = sdi->priv; |
e0b7d23c | 298 | |
29d957ce | 299 | if ((fd = open(devc->device, O_RDWR)) == -1) |
e0b7d23c ML |
300 | return SR_ERR; |
301 | ||
e0b7d23c ML |
302 | devc->fd = fd; |
303 | ||
304 | devc->scale = 1; | |
f4816ac6 ML |
305 | |
306 | return SR_OK; | |
307 | } | |
308 | ||
309 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
310 | { | |
29d957ce UH |
311 | struct dev_context *devc; |
312 | ||
313 | devc = sdi->priv; | |
e0b7d23c ML |
314 | |
315 | close(devc->fd); | |
f4816ac6 ML |
316 | |
317 | return SR_OK; | |
318 | } | |
319 | ||
320 | static int hw_cleanup(void) | |
321 | { | |
322 | clear_instances(); | |
323 | ||
f4816ac6 ML |
324 | return SR_OK; |
325 | } | |
326 | ||
327 | static int hw_info_get(int info_id, const void **data, | |
328 | const struct sr_dev_inst *sdi) | |
329 | { | |
e0b7d23c ML |
330 | (void)sdi; |
331 | ||
f4816ac6 | 332 | switch (info_id) { |
e0b7d23c ML |
333 | case SR_DI_HWCAPS: |
334 | *data = hwcaps; | |
335 | break; | |
e0b7d23c ML |
336 | case SR_DI_TIMEBASES: |
337 | *data = timebases; | |
338 | break; | |
339 | case SR_DI_TRIGGER_SOURCES: | |
340 | *data = trigger_sources; | |
341 | break; | |
342 | case SR_DI_VDIVS: | |
343 | *data = vdivs; | |
344 | break; | |
345 | case SR_DI_COUPLING: | |
346 | *data = coupling; | |
347 | break; | |
f4816ac6 | 348 | default: |
f4816ac6 ML |
349 | return SR_ERR_ARG; |
350 | } | |
351 | ||
352 | return SR_OK; | |
353 | } | |
354 | ||
355 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
356 | const void *value) | |
357 | { | |
29d957ce | 358 | struct dev_context *devc; |
e0b7d23c ML |
359 | uint64_t tmp_u64; |
360 | float tmp_float; | |
361 | struct sr_rational tmp_rat; | |
362 | int ret, i, j; | |
363 | char *channel; | |
f4816ac6 | 364 | |
29d957ce UH |
365 | devc = sdi->priv; |
366 | ||
f4816ac6 ML |
367 | if (sdi->status != SR_ST_ACTIVE) { |
368 | sr_err("Device inactive, can't set config options."); | |
369 | return SR_ERR; | |
370 | } | |
371 | ||
372 | ret = SR_OK; | |
373 | switch (hwcap) { | |
1953564a | 374 | case SR_CONF_LIMIT_FRAMES: |
e0b7d23c ML |
375 | devc->limit_frames = *(const uint64_t *)value; |
376 | break; | |
1953564a | 377 | case SR_CONF_TRIGGER_SLOPE: |
e0b7d23c | 378 | tmp_u64 = *(const int *)value; |
29d957ce UH |
379 | rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n", |
380 | tmp_u64 ? "POS" : "NEG"); | |
e0b7d23c | 381 | break; |
1953564a | 382 | case SR_CONF_HORIZ_TRIGGERPOS: |
e0b7d23c | 383 | tmp_float = *(const float *)value; |
542843f7 | 384 | rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_float); |
e0b7d23c | 385 | break; |
1953564a | 386 | case SR_CONF_TIMEBASE: |
e0b7d23c | 387 | tmp_rat = *(const struct sr_rational *)value; |
29d957ce UH |
388 | rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n", |
389 | (float)tmp_rat.p / tmp_rat.q); | |
e0b7d23c | 390 | break; |
1953564a | 391 | case SR_CONF_TRIGGER_SOURCE: |
e0b7d23c ML |
392 | if (!strcmp(value, "CH1")) |
393 | channel = "CHAN1"; | |
394 | else if (!strcmp(value, "CH2")) | |
395 | channel = "CHAN2"; | |
396 | else if (!strcmp(value, "EXT")) | |
397 | channel = "EXT"; | |
398 | else if (!strcmp(value, "AC Line")) | |
399 | channel = "ACL"; | |
29d957ce | 400 | else { |
e0b7d23c ML |
401 | ret = SR_ERR_ARG; |
402 | break; | |
4e108ace ML |
403 | } |
404 | rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SOUR %s\n", channel); | |
e0b7d23c | 405 | break; |
1953564a | 406 | case SR_CONF_VDIV: |
e0b7d23c ML |
407 | /* TODO: Not supporting vdiv per channel yet. */ |
408 | tmp_rat = *(const struct sr_rational *)value; | |
409 | for (i = 0; vdivs[i].p && vdivs[i].q; i++) { | |
410 | if (vdivs[i].p == tmp_rat.p | |
411 | && vdivs[i].q == tmp_rat.q) { | |
29d957ce | 412 | devc->scale = (float)tmp_rat.p / tmp_rat.q; |
e0b7d23c | 413 | for (j = 0; j < 2; j++) |
29d957ce UH |
414 | rigol_ds1xx2_send_data(devc->fd, |
415 | ":CHAN%d:SCAL %.3f\n", j, devc->scale); | |
e0b7d23c ML |
416 | break; |
417 | } | |
418 | } | |
419 | if (vdivs[i].p == 0 && vdivs[i].q == 0) | |
420 | ret = SR_ERR_ARG; | |
421 | break; | |
1953564a | 422 | case SR_CONF_COUPLING: |
e0b7d23c ML |
423 | /* TODO: Not supporting coupling per channel yet. */ |
424 | for (i = 0; coupling[i]; i++) { | |
425 | if (!strcmp(value, coupling[i])) { | |
426 | for (j = 0; j < 2; j++) | |
29d957ce UH |
427 | rigol_ds1xx2_send_data(devc->fd, |
428 | ":CHAN%d:COUP %s\n", j, coupling[i]); | |
e0b7d23c ML |
429 | break; |
430 | } | |
431 | } | |
432 | if (coupling[i] == 0) | |
433 | ret = SR_ERR_ARG; | |
434 | break; | |
f4816ac6 ML |
435 | default: |
436 | sr_err("Unknown hardware capability: %d.", hwcap); | |
437 | ret = SR_ERR_ARG; | |
29d957ce | 438 | break; |
f4816ac6 ML |
439 | } |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
444 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
445 | void *cb_data) | |
446 | { | |
29d957ce | 447 | struct dev_context *devc; |
e0b7d23c ML |
448 | struct sr_datafeed_packet packet; |
449 | struct sr_datafeed_header header; | |
e0b7d23c ML |
450 | char buf[256]; |
451 | int len; | |
29d957ce | 452 | |
e0b7d23c ML |
453 | (void)cb_data; |
454 | ||
29d957ce UH |
455 | devc = sdi->priv; |
456 | ||
e0b7d23c ML |
457 | devc->num_frames = 0; |
458 | ||
459 | sr_source_add(devc->fd, G_IO_IN, 50, rigol_ds1xx2_receive_data, (void *)sdi); | |
460 | ||
461 | /* Send header packet to the session bus. */ | |
462 | packet.type = SR_DF_HEADER; | |
463 | packet.payload = (unsigned char *)&header; | |
464 | header.feed_version = 1; | |
465 | gettimeofday(&header.starttime, NULL); | |
466 | sr_session_send(cb_data, &packet); | |
467 | ||
69e19dd7 BV |
468 | /* Hardcoded to CH1 only. */ |
469 | devc->enabled_probes = g_slist_append(NULL, sdi->probes->data); | |
e0b7d23c ML |
470 | rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL?\n"); |
471 | len = read(devc->fd, buf, sizeof(buf)); | |
472 | buf[len] = 0; | |
473 | devc->scale = atof(buf); | |
29d957ce | 474 | sr_dbg("Scale is %.3f.", devc->scale); |
e0b7d23c ML |
475 | rigol_ds1xx2_send_data(devc->fd, ":CHAN1:OFFS?\n"); |
476 | len = read(devc->fd, buf, sizeof(buf)); | |
477 | buf[len] = 0; | |
478 | devc->offset = atof(buf); | |
29d957ce | 479 | sr_dbg("Offset is %.6f.", devc->offset); |
e0b7d23c | 480 | rigol_ds1xx2_send_data(devc->fd, ":WAV:DATA?\n"); |
f4816ac6 ML |
481 | |
482 | return SR_OK; | |
483 | } | |
484 | ||
485 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
486 | { | |
29d957ce UH |
487 | struct dev_context *devc; |
488 | ||
f4816ac6 ML |
489 | (void)cb_data; |
490 | ||
29d957ce UH |
491 | devc = sdi->priv; |
492 | ||
f4816ac6 ML |
493 | if (sdi->status != SR_ST_ACTIVE) { |
494 | sr_err("Device inactive, can't stop acquisition."); | |
495 | return SR_ERR; | |
496 | } | |
497 | ||
e0b7d23c | 498 | sr_source_remove(devc->fd); |
f4816ac6 ML |
499 | |
500 | return SR_OK; | |
501 | } | |
502 | ||
503 | SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = { | |
504 | .name = "rigol-ds1xx2", | |
505 | .longname = "Rigol DS1xx2", | |
506 | .api_version = 1, | |
507 | .init = hw_init, | |
508 | .cleanup = hw_cleanup, | |
509 | .scan = hw_scan, | |
510 | .dev_list = hw_dev_list, | |
511 | .dev_clear = clear_instances, | |
512 | .dev_open = hw_dev_open, | |
513 | .dev_close = hw_dev_close, | |
514 | .info_get = hw_info_get, | |
515 | .dev_config_set = hw_dev_config_set, | |
516 | .dev_acquisition_start = hw_dev_acquisition_start, | |
517 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
518 | .priv = NULL, | |
519 | }; |