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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com> | |
5 | * Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt> | |
6 | * Copyright (C) 2013 Lior Elazary <lelazary@yahoo.com> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, either version 3 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include "protocol.h" | |
23 | ||
24 | static const int32_t hwcaps[] = { | |
25 | SR_CONF_OSCILLOSCOPE, | |
26 | SR_CONF_LOGIC_ANALYZER, | |
27 | SR_CONF_SAMPLERATE, | |
28 | SR_CONF_TRIGGER_SLOPE, | |
29 | SR_CONF_HORIZ_TRIGGERPOS, | |
30 | // SR_CONF_CAPTURE_RATIO, | |
31 | SR_CONF_LIMIT_SAMPLES, | |
32 | // SR_CONF_RLE, | |
33 | }; | |
34 | ||
35 | /* | |
36 | * Probes are numbered 0 to 7. | |
37 | * | |
38 | * See also: http://www.linkinstruments.com/images/mso19_1113.gif | |
39 | */ | |
40 | SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = { | |
41 | /* Note: DSO needs to be first. */ | |
42 | "DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL, | |
43 | }; | |
44 | ||
45 | static const uint64_t samplerates[] = { | |
46 | SR_HZ(100), | |
47 | SR_MHZ(200), | |
48 | SR_HZ(100), | |
49 | }; | |
50 | ||
51 | SR_PRIV struct sr_dev_driver link_mso19_driver_info; | |
52 | static struct sr_dev_driver *di = &link_mso19_driver_info; | |
53 | ||
54 | static int dev_close(struct sr_dev_inst *sdi); | |
55 | ||
56 | /* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */ | |
57 | static int dev_clear(void) | |
58 | { | |
59 | GSList *l; | |
60 | struct sr_dev_inst *sdi; | |
61 | struct drv_context *drvc; | |
62 | struct dev_context *devc; | |
63 | int ret = SR_OK; | |
64 | ||
65 | if (!(drvc = di->priv)) | |
66 | return SR_OK; | |
67 | ||
68 | /* Properly close and free all devices. */ | |
69 | for (l = drvc->instances; l; l = l->next) { | |
70 | if (!(sdi = l->data)) { | |
71 | /* Log error, but continue cleaning up the rest. */ | |
72 | sr_err("%s: sdi was NULL, continuing", __func__); | |
73 | ret = SR_ERR_BUG; | |
74 | continue; | |
75 | } | |
76 | if (!(devc = sdi->priv)) { | |
77 | /* Log error, but continue cleaning up the rest. */ | |
78 | sr_err("%s: sdi->priv was NULL, continuing", __func__); | |
79 | ret = SR_ERR_BUG; | |
80 | continue; | |
81 | } | |
82 | dev_close(sdi); | |
83 | sr_serial_dev_inst_free(devc->serial); | |
84 | sr_dev_inst_free(sdi); | |
85 | } | |
86 | g_slist_free(drvc->instances); | |
87 | drvc->instances = NULL; | |
88 | ||
89 | return ret; | |
90 | } | |
91 | ||
92 | static int init(struct sr_context *sr_ctx) | |
93 | { | |
94 | return std_init(sr_ctx, di, LOG_PREFIX); | |
95 | } | |
96 | ||
97 | static GSList *scan(GSList *options) | |
98 | { | |
99 | int i; | |
100 | GSList *devices = NULL; | |
101 | const char *conn = NULL; | |
102 | const char *serialcomm = NULL; | |
103 | GSList *l; | |
104 | struct sr_config *src; | |
105 | struct udev *udev; | |
106 | int ptype; | |
107 | ||
108 | for (l = options; l; l = l->next) { | |
109 | src = l->data; | |
110 | switch (src->key) { | |
111 | case SR_CONF_CONN: | |
112 | conn = g_variant_get_string(src->data, NULL); | |
113 | break; | |
114 | case SR_CONF_SERIALCOMM: | |
115 | serialcomm = g_variant_get_string(src->data, NULL); | |
116 | break; | |
117 | } | |
118 | } | |
119 | if (!conn) | |
120 | conn = SERIALCONN; | |
121 | if (serialcomm == NULL) | |
122 | serialcomm = SERIALCOMM; | |
123 | ||
124 | udev = udev_new(); | |
125 | if (!udev) { | |
126 | sr_err("Failed to initialize udev."); | |
127 | } | |
128 | ||
129 | struct udev_enumerate *enumerate = udev_enumerate_new(udev); | |
130 | udev_enumerate_add_match_subsystem(enumerate, "usb-serial"); | |
131 | udev_enumerate_scan_devices(enumerate); | |
132 | struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate); | |
133 | struct udev_list_entry *dev_list_entry; | |
134 | for (dev_list_entry = devs; | |
135 | dev_list_entry != NULL; | |
136 | dev_list_entry = udev_list_entry_get_next(dev_list_entry)) { | |
137 | const char *syspath = udev_list_entry_get_name(dev_list_entry); | |
138 | struct udev_device *dev = | |
139 | udev_device_new_from_syspath(udev, syspath); | |
140 | const char *sysname = udev_device_get_sysname(dev); | |
141 | struct udev_device *parent = | |
142 | udev_device_get_parent_with_subsystem_devtype(dev, "usb", | |
143 | "usb_device"); | |
144 | ||
145 | if (!parent) { | |
146 | sr_err("Unable to find parent usb device for %s", | |
147 | sysname); | |
148 | continue; | |
149 | } | |
150 | ||
151 | const char *idVendor = | |
152 | udev_device_get_sysattr_value(parent, "idVendor"); | |
153 | const char *idProduct = | |
154 | udev_device_get_sysattr_value(parent, "idProduct"); | |
155 | if (strcmp(USB_VENDOR, idVendor) | |
156 | || strcmp(USB_PRODUCT, idProduct)) | |
157 | continue; | |
158 | ||
159 | const char *iSerial = | |
160 | udev_device_get_sysattr_value(parent, "serial"); | |
161 | const char *iProduct = | |
162 | udev_device_get_sysattr_value(parent, "product"); | |
163 | ||
164 | char path[32]; | |
165 | snprintf(path, sizeof(path), "/dev/%s", sysname); | |
166 | conn = path; | |
167 | ||
168 | size_t s = strcspn(iProduct, " "); | |
169 | char product[32]; | |
170 | char manufacturer[32]; | |
171 | if (s > sizeof(product) || | |
172 | strlen(iProduct) - s > sizeof(manufacturer)) { | |
173 | sr_err("Could not parse iProduct: %s.", iProduct); | |
174 | continue; | |
175 | } | |
176 | strncpy(product, iProduct, s); | |
177 | product[s] = 0; | |
178 | strcpy(manufacturer, iProduct + s + 1); | |
179 | ||
180 | //Create the device context and set its params | |
181 | struct dev_context *devc; | |
182 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
183 | sr_err("Device context malloc failed."); | |
184 | return devices; | |
185 | } | |
186 | ||
187 | if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) { | |
188 | sr_err("Invalid iSerial: %s.", iSerial); | |
189 | g_free(devc); | |
190 | return devices; | |
191 | } | |
192 | ||
193 | char hwrev[32]; | |
194 | sprintf(hwrev, "r%d", devc->hwrev); | |
195 | devc->ctlbase1 = 0; | |
196 | devc->protocol_trigger.spimode = 0; | |
197 | for (i = 0; i < 4; i++) { | |
198 | devc->protocol_trigger.word[i] = 0; | |
199 | devc->protocol_trigger.mask[i] = 0xff; | |
200 | } | |
201 | ||
202 | if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) { | |
203 | g_free(devc); | |
204 | return devices; | |
205 | } | |
206 | ||
207 | struct sr_dev_inst *sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, | |
208 | manufacturer, product, hwrev); | |
209 | ||
210 | if (!sdi) { | |
211 | sr_err("Unable to create device instance for %s", | |
212 | sysname); | |
213 | sr_dev_inst_free(sdi); | |
214 | g_free(devc); | |
215 | return devices; | |
216 | } | |
217 | ||
218 | sdi->driver = di; | |
219 | sdi->priv = devc; | |
220 | ||
221 | for (i = 0; i < NUM_PROBES; i++) { | |
222 | struct sr_probe *probe; | |
223 | ptype = (i == 0) ? SR_PROBE_ANALOG : SR_PROBE_LOGIC; | |
224 | if (!(probe = sr_probe_new(i, ptype, TRUE, | |
225 | mso19_probe_names[i]))) | |
226 | return 0; | |
227 | sdi->probes = g_slist_append(sdi->probes, probe); | |
228 | } | |
229 | ||
230 | //Add the driver | |
231 | struct drv_context *drvc = di->priv; | |
232 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
233 | devices = g_slist_append(devices, sdi); | |
234 | } | |
235 | ||
236 | return devices; | |
237 | } | |
238 | ||
239 | static GSList *dev_list(void) | |
240 | { | |
241 | return ((struct drv_context *)(di->priv))->instances; | |
242 | } | |
243 | ||
244 | static int dev_open(struct sr_dev_inst *sdi) | |
245 | { | |
246 | int ret; | |
247 | struct dev_context *devc; | |
248 | ||
249 | devc = sdi->priv; | |
250 | ||
251 | if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK) | |
252 | return SR_ERR; | |
253 | ||
254 | sdi->status = SR_ST_ACTIVE; | |
255 | ||
256 | /* FIXME: discard serial buffer */ | |
257 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
258 | sr_dbg("Trigger state: 0x%x.", devc->trigger_state); | |
259 | ||
260 | ret = mso_reset_adc(sdi); | |
261 | if (ret != SR_OK) | |
262 | return ret; | |
263 | ||
264 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
265 | sr_dbg("Trigger state: 0x%x.", devc->trigger_state); | |
266 | ||
267 | // ret = mso_reset_fsm(sdi); | |
268 | // if (ret != SR_OK) | |
269 | // return ret; | |
270 | // return SR_ERR; | |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
275 | static int dev_close(struct sr_dev_inst *sdi) | |
276 | { | |
277 | struct dev_context *devc; | |
278 | ||
279 | devc = sdi->priv; | |
280 | ||
281 | if (devc->serial && devc->serial->fd != -1) { | |
282 | serial_close(devc->serial); | |
283 | sdi->status = SR_ST_INACTIVE; | |
284 | } | |
285 | ||
286 | return SR_OK; | |
287 | } | |
288 | ||
289 | static int cleanup(void) | |
290 | { | |
291 | return dev_clear(); | |
292 | } | |
293 | ||
294 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) | |
295 | { | |
296 | struct dev_context *devc; | |
297 | ||
298 | switch (id) { | |
299 | case SR_CONF_SAMPLERATE: | |
300 | if (sdi) { | |
301 | devc = sdi->priv; | |
302 | *data = g_variant_new_uint64(devc->cur_rate); | |
303 | } else | |
304 | return SR_ERR; | |
305 | break; | |
306 | default: | |
307 | return SR_ERR_NA; | |
308 | } | |
309 | ||
310 | return SR_OK; | |
311 | } | |
312 | ||
313 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
314 | { | |
315 | int ret; | |
316 | struct dev_context *devc; | |
317 | uint64_t num_samples, slope; | |
318 | int trigger_pos; | |
319 | double pos; | |
320 | ||
321 | devc = sdi->priv; | |
322 | ||
323 | if (sdi->status != SR_ST_ACTIVE) | |
324 | return SR_ERR_DEV_CLOSED; | |
325 | ||
326 | switch (id) { | |
327 | case SR_CONF_SAMPLERATE: | |
328 | // FIXME | |
329 | return mso_configure_rate(sdi, g_variant_get_uint64(data)); | |
330 | ret = SR_OK; | |
331 | break; | |
332 | case SR_CONF_LIMIT_SAMPLES: | |
333 | num_samples = g_variant_get_uint64(data); | |
334 | if (num_samples != 1024) { | |
335 | sr_err("Only 1024 samples are supported."); | |
336 | ret = SR_ERR_ARG; | |
337 | } else { | |
338 | devc->limit_samples = num_samples; | |
339 | sr_dbg("setting limit_samples to %i\n", | |
340 | num_samples); | |
341 | ret = SR_OK; | |
342 | } | |
343 | break; | |
344 | case SR_CONF_CAPTURE_RATIO: | |
345 | ret = SR_OK; | |
346 | break; | |
347 | case SR_CONF_TRIGGER_SLOPE: | |
348 | slope = g_variant_get_uint64(data); | |
349 | if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE) { | |
350 | sr_err("Invalid trigger slope"); | |
351 | ret = SR_ERR_ARG; | |
352 | } else { | |
353 | devc->trigger_slope = slope; | |
354 | ret = SR_OK; | |
355 | } | |
356 | break; | |
357 | case SR_CONF_HORIZ_TRIGGERPOS: | |
358 | pos = g_variant_get_double(data); | |
359 | if (pos < 0 || pos > 255) { | |
360 | sr_err("Trigger position (%f) should be between 0 and 255.", pos); | |
361 | ret = SR_ERR_ARG; | |
362 | } else { | |
363 | trigger_pos = (int)pos; | |
364 | devc->trigger_holdoff[0] = trigger_pos & 0xff; | |
365 | ret = SR_OK; | |
366 | } | |
367 | break; | |
368 | case SR_CONF_RLE: | |
369 | ret = SR_OK; | |
370 | break; | |
371 | default: | |
372 | ret = SR_ERR_NA; | |
373 | break; | |
374 | } | |
375 | ||
376 | return ret; | |
377 | } | |
378 | ||
379 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
380 | { | |
381 | GVariant *gvar; | |
382 | GVariantBuilder gvb; | |
383 | ||
384 | (void)sdi; | |
385 | ||
386 | switch (key) { | |
387 | case SR_CONF_DEVICE_OPTIONS: | |
388 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
389 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
390 | break; | |
391 | case SR_CONF_SAMPLERATE: | |
392 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
393 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
394 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
395 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
396 | *data = g_variant_builder_end(&gvb); | |
397 | break; | |
398 | case SR_CONF_TRIGGER_TYPE: | |
399 | *data = g_variant_new_string(TRIGGER_TYPE); | |
400 | break; | |
401 | default: | |
402 | return SR_ERR_NA; | |
403 | } | |
404 | ||
405 | return SR_OK; | |
406 | } | |
407 | ||
408 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
409 | { | |
410 | struct dev_context *devc; | |
411 | int ret = SR_ERR; | |
412 | ||
413 | if (sdi->status != SR_ST_ACTIVE) | |
414 | return SR_ERR_DEV_CLOSED; | |
415 | ||
416 | devc = sdi->priv; | |
417 | ||
418 | if (mso_configure_probes(sdi) != SR_OK) { | |
419 | sr_err("Failed to configure probes."); | |
420 | return SR_ERR; | |
421 | } | |
422 | ||
423 | /* FIXME: No need to do full reconfigure every time */ | |
424 | // ret = mso_reset_fsm(sdi); | |
425 | // if (ret != SR_OK) | |
426 | // return ret; | |
427 | ||
428 | /* FIXME: ACDC Mode */ | |
429 | devc->ctlbase1 &= 0x7f; | |
430 | // devc->ctlbase1 |= devc->acdcmode; | |
431 | ||
432 | ret = mso_configure_rate(sdi, devc->cur_rate); | |
433 | if (ret != SR_OK) | |
434 | return ret; | |
435 | ||
436 | /* set dac offset */ | |
437 | ret = mso_dac_out(sdi, devc->dac_offset); | |
438 | if (ret != SR_OK) | |
439 | return ret; | |
440 | ||
441 | ret = mso_configure_threshold_level(sdi); | |
442 | if (ret != SR_OK) | |
443 | return ret; | |
444 | ||
445 | ret = mso_configure_trigger(sdi); | |
446 | if (ret != SR_OK) | |
447 | return ret; | |
448 | ||
449 | /* END of config hardware part */ | |
450 | ret = mso_arm(sdi); | |
451 | if (ret != SR_OK) | |
452 | return ret; | |
453 | ||
454 | /* Start acquisition on the device. */ | |
455 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
456 | ret = mso_check_trigger(devc->serial, NULL); | |
457 | if (ret != SR_OK) | |
458 | return ret; | |
459 | ||
460 | /* Reset trigger state. */ | |
461 | devc->trigger_state = 0x00; | |
462 | ||
463 | /* Send header packet to the session bus. */ | |
464 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
465 | ||
466 | /* Our first probe is analog, the other 8 are of type 'logic'. */ | |
467 | /* TODO. */ | |
468 | ||
469 | sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data); | |
470 | ||
471 | return SR_OK; | |
472 | } | |
473 | ||
474 | /* This stops acquisition on ALL devices, ignoring dev_index. */ | |
475 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
476 | { | |
477 | (void)cb_data; | |
478 | ||
479 | stop_acquisition(sdi); | |
480 | ||
481 | return SR_OK; | |
482 | } | |
483 | ||
484 | SR_PRIV struct sr_dev_driver link_mso19_driver_info = { | |
485 | .name = "link-mso19", | |
486 | .longname = "Link Instruments MSO-19", | |
487 | .api_version = 1, | |
488 | .init = init, | |
489 | .cleanup = cleanup, | |
490 | .scan = scan, | |
491 | .dev_list = dev_list, | |
492 | .dev_clear = dev_clear, | |
493 | .config_get = config_get, | |
494 | .config_set = config_set, | |
495 | .config_list = config_list, | |
496 | .dev_open = dev_open, | |
497 | .dev_close = dev_close, | |
498 | .dev_acquisition_start = dev_acquisition_start, | |
499 | .dev_acquisition_stop = dev_acquisition_stop, | |
500 | .priv = NULL, | |
501 | }; |