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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 <config.h> | |
23 | #include "protocol.h" | |
24 | ||
25 | static const uint32_t devopts[] = { | |
26 | SR_CONF_OSCILLOSCOPE, | |
27 | SR_CONF_LOGIC_ANALYZER, | |
28 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
29 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
30 | SR_CONF_TRIGGER_TYPE | SR_CONF_LIST, | |
31 | SR_CONF_TRIGGER_SLOPE | SR_CONF_SET, | |
32 | SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_SET, | |
33 | SR_CONF_CAPTURE_RATIO | SR_CONF_SET, | |
34 | SR_CONF_RLE | SR_CONF_SET, | |
35 | }; | |
36 | ||
37 | /* | |
38 | * Channels are numbered 0 to 7. | |
39 | * | |
40 | * See also: http://www.linkinstruments.com/images/mso19_1113.gif | |
41 | */ | |
42 | static const char *channel_names[] = { | |
43 | /* Note: DSO needs to be first. */ | |
44 | "DSO", "0", "1", "2", "3", "4", "5", "6", "7", | |
45 | }; | |
46 | ||
47 | static const uint64_t samplerates[] = { | |
48 | SR_HZ(100), | |
49 | SR_MHZ(200), | |
50 | SR_HZ(100), | |
51 | }; | |
52 | ||
53 | SR_PRIV struct sr_dev_driver link_mso19_driver_info; | |
54 | ||
55 | /* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */ | |
56 | static int dev_clear(const struct sr_dev_driver *di) | |
57 | { | |
58 | GSList *l; | |
59 | struct sr_dev_inst *sdi; | |
60 | struct drv_context *drvc; | |
61 | struct dev_context *devc; | |
62 | int ret = SR_OK; | |
63 | ||
64 | if (!(drvc = di->context)) | |
65 | return SR_OK; | |
66 | ||
67 | /* Properly close and free all devices. */ | |
68 | for (l = drvc->instances; l; l = l->next) { | |
69 | if (!(sdi = l->data)) { | |
70 | /* Log error, but continue cleaning up the rest. */ | |
71 | sr_err("%s: sdi was NULL, continuing", __func__); | |
72 | ret = SR_ERR_BUG; | |
73 | continue; | |
74 | } | |
75 | if (!(devc = sdi->priv)) { | |
76 | /* Log error, but continue cleaning up the rest. */ | |
77 | sr_err("%s: sdi->priv was NULL, continuing", __func__); | |
78 | ret = SR_ERR_BUG; | |
79 | continue; | |
80 | } | |
81 | std_serial_dev_close(sdi); | |
82 | sr_serial_dev_inst_free(devc->serial); | |
83 | sr_dev_inst_free(sdi); | |
84 | } | |
85 | g_slist_free(drvc->instances); | |
86 | drvc->instances = NULL; | |
87 | ||
88 | return ret; | |
89 | } | |
90 | ||
91 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
92 | { | |
93 | return std_init(sr_ctx, di, LOG_PREFIX); | |
94 | } | |
95 | ||
96 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
97 | { | |
98 | int i; | |
99 | GSList *devices = NULL; | |
100 | const char *conn = NULL; | |
101 | const char *serialcomm = NULL; | |
102 | GSList *l; | |
103 | struct sr_config *src; | |
104 | struct udev *udev; | |
105 | int chtype; | |
106 | ||
107 | for (l = options; l; l = l->next) { | |
108 | src = l->data; | |
109 | switch (src->key) { | |
110 | case SR_CONF_CONN: | |
111 | conn = g_variant_get_string(src->data, NULL); | |
112 | break; | |
113 | case SR_CONF_SERIALCOMM: | |
114 | serialcomm = g_variant_get_string(src->data, NULL); | |
115 | break; | |
116 | } | |
117 | } | |
118 | if (!conn) | |
119 | conn = SERIALCONN; | |
120 | if (!serialcomm) | |
121 | serialcomm = SERIALCOMM; | |
122 | ||
123 | udev = udev_new(); | |
124 | if (!udev) { | |
125 | sr_err("Failed to initialize udev."); | |
126 | } | |
127 | ||
128 | struct udev_enumerate *enumerate = udev_enumerate_new(udev); | |
129 | udev_enumerate_add_match_subsystem(enumerate, "usb-serial"); | |
130 | udev_enumerate_scan_devices(enumerate); | |
131 | struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate); | |
132 | struct udev_list_entry *dev_list_entry; | |
133 | for (dev_list_entry = devs; | |
134 | dev_list_entry != NULL; | |
135 | dev_list_entry = udev_list_entry_get_next(dev_list_entry)) { | |
136 | const char *syspath = udev_list_entry_get_name(dev_list_entry); | |
137 | struct udev_device *dev = | |
138 | udev_device_new_from_syspath(udev, syspath); | |
139 | const char *sysname = udev_device_get_sysname(dev); | |
140 | struct udev_device *parent = | |
141 | udev_device_get_parent_with_subsystem_devtype(dev, "usb", | |
142 | "usb_device"); | |
143 | ||
144 | if (!parent) { | |
145 | sr_err("Unable to find parent usb device for %s", | |
146 | sysname); | |
147 | continue; | |
148 | } | |
149 | ||
150 | const char *idVendor = | |
151 | udev_device_get_sysattr_value(parent, "idVendor"); | |
152 | const char *idProduct = | |
153 | udev_device_get_sysattr_value(parent, "idProduct"); | |
154 | if (strcmp(USB_VENDOR, idVendor) | |
155 | || strcmp(USB_PRODUCT, idProduct)) | |
156 | continue; | |
157 | ||
158 | const char *iSerial = | |
159 | udev_device_get_sysattr_value(parent, "serial"); | |
160 | const char *iProduct = | |
161 | udev_device_get_sysattr_value(parent, "product"); | |
162 | ||
163 | char path[32]; | |
164 | snprintf(path, sizeof(path), "/dev/%s", sysname); | |
165 | conn = path; | |
166 | ||
167 | size_t s = strcspn(iProduct, " "); | |
168 | char product[32]; | |
169 | char manufacturer[32]; | |
170 | if (s > sizeof(product) || | |
171 | strlen(iProduct) - s > sizeof(manufacturer)) { | |
172 | sr_err("Could not parse iProduct: %s.", iProduct); | |
173 | continue; | |
174 | } | |
175 | strncpy(product, iProduct, s); | |
176 | product[s] = 0; | |
177 | strcpy(manufacturer, iProduct + s + 1); | |
178 | ||
179 | //Create the device context and set its params | |
180 | struct dev_context *devc; | |
181 | devc = g_malloc0(sizeof(struct dev_context)); | |
182 | ||
183 | if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) { | |
184 | sr_err("Invalid iSerial: %s.", iSerial); | |
185 | g_free(devc); | |
186 | return devices; | |
187 | } | |
188 | ||
189 | char hwrev[32]; | |
190 | sprintf(hwrev, "r%d", devc->hwrev); | |
191 | devc->ctlbase1 = 0; | |
192 | devc->protocol_trigger.spimode = 0; | |
193 | for (i = 0; i < 4; i++) { | |
194 | devc->protocol_trigger.word[i] = 0; | |
195 | devc->protocol_trigger.mask[i] = 0xff; | |
196 | } | |
197 | ||
198 | devc->serial = sr_serial_dev_inst_new(conn, serialcomm); | |
199 | ||
200 | struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
201 | sdi->status = SR_ST_INACTIVE; | |
202 | sdi->vendor = g_strdup(manufacturer); | |
203 | sdi->model = g_strdup(product); | |
204 | sdi->version = g_strdup(hwrev); | |
205 | ||
206 | if (!sdi) { | |
207 | sr_err("Unable to create device instance for %s", | |
208 | sysname); | |
209 | sr_dev_inst_free(sdi); | |
210 | g_free(devc); | |
211 | return devices; | |
212 | } | |
213 | ||
214 | sdi->driver = di; | |
215 | sdi->priv = devc; | |
216 | ||
217 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
218 | chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC; | |
219 | sr_channel_new(sdi, i, chtype, TRUE, channel_names[i]); | |
220 | } | |
221 | ||
222 | //Add the driver | |
223 | struct drv_context *drvc = di->context; | |
224 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
225 | devices = g_slist_append(devices, sdi); | |
226 | } | |
227 | ||
228 | return devices; | |
229 | } | |
230 | ||
231 | static GSList *dev_list(const struct sr_dev_driver *di) | |
232 | { | |
233 | return ((struct drv_context *)(di->context))->instances; | |
234 | } | |
235 | ||
236 | static int dev_open(struct sr_dev_inst *sdi) | |
237 | { | |
238 | int ret; | |
239 | struct dev_context *devc; | |
240 | ||
241 | devc = sdi->priv; | |
242 | ||
243 | if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK) | |
244 | return SR_ERR; | |
245 | ||
246 | sdi->status = SR_ST_ACTIVE; | |
247 | ||
248 | /* FIXME: discard serial buffer */ | |
249 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
250 | sr_dbg("Trigger state: 0x%x.", devc->trigger_state); | |
251 | ||
252 | ret = mso_reset_adc(sdi); | |
253 | if (ret != SR_OK) | |
254 | return ret; | |
255 | ||
256 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
257 | sr_dbg("Trigger state: 0x%x.", devc->trigger_state); | |
258 | ||
259 | // ret = mso_reset_fsm(sdi); | |
260 | // if (ret != SR_OK) | |
261 | // return ret; | |
262 | // return SR_ERR; | |
263 | ||
264 | return SR_OK; | |
265 | } | |
266 | ||
267 | static int cleanup(const struct sr_dev_driver *di) | |
268 | { | |
269 | return dev_clear(); | |
270 | } | |
271 | ||
272 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
273 | const struct sr_channel_group *cg) | |
274 | { | |
275 | struct dev_context *devc; | |
276 | ||
277 | (void)cg; | |
278 | ||
279 | switch (key) { | |
280 | case SR_CONF_SAMPLERATE: | |
281 | if (sdi) { | |
282 | devc = sdi->priv; | |
283 | *data = g_variant_new_uint64(devc->cur_rate); | |
284 | } else | |
285 | return SR_ERR; | |
286 | break; | |
287 | default: | |
288 | return SR_ERR_NA; | |
289 | } | |
290 | ||
291 | return SR_OK; | |
292 | } | |
293 | ||
294 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, | |
295 | const struct sr_channel_group *cg) | |
296 | { | |
297 | int ret; | |
298 | struct dev_context *devc; | |
299 | uint64_t num_samples; | |
300 | const char *slope; | |
301 | int trigger_pos; | |
302 | double pos; | |
303 | ||
304 | (void)cg; | |
305 | devc = sdi->priv; | |
306 | ||
307 | if (sdi->status != SR_ST_ACTIVE) | |
308 | return SR_ERR_DEV_CLOSED; | |
309 | ||
310 | switch (key) { | |
311 | case SR_CONF_SAMPLERATE: | |
312 | // FIXME | |
313 | return mso_configure_rate(sdi, g_variant_get_uint64(data)); | |
314 | ret = SR_OK; | |
315 | break; | |
316 | case SR_CONF_LIMIT_SAMPLES: | |
317 | num_samples = g_variant_get_uint64(data); | |
318 | if (num_samples != 1024) { | |
319 | sr_err("Only 1024 samples are supported."); | |
320 | ret = SR_ERR_ARG; | |
321 | } else { | |
322 | devc->limit_samples = num_samples; | |
323 | ret = SR_OK; | |
324 | } | |
325 | break; | |
326 | case SR_CONF_CAPTURE_RATIO: | |
327 | ret = SR_OK; | |
328 | break; | |
329 | case SR_CONF_TRIGGER_SLOPE: | |
330 | slope = g_variant_get_string(data, NULL); | |
331 | ||
332 | if (!slope || !(slope[0] == 'f' || slope[0] == 'r')) | |
333 | sr_err("Invalid trigger slope"); | |
334 | ret = SR_ERR_ARG; | |
335 | } else { | |
336 | devc->trigger_slope = (slope[0] == 'r') | |
337 | ? SLOPE_POSITIVE : SLOPE_NEGATIVE; | |
338 | ret = SR_OK; | |
339 | } | |
340 | break; | |
341 | case SR_CONF_HORIZ_TRIGGERPOS: | |
342 | pos = g_variant_get_double(data); | |
343 | if (pos < 0 || pos > 255) { | |
344 | sr_err("Trigger position (%f) should be between 0 and 255.", pos); | |
345 | ret = SR_ERR_ARG; | |
346 | } else { | |
347 | trigger_pos = (int)pos; | |
348 | devc->trigger_holdoff[0] = trigger_pos & 0xff; | |
349 | ret = SR_OK; | |
350 | } | |
351 | break; | |
352 | case SR_CONF_RLE: | |
353 | ret = SR_OK; | |
354 | break; | |
355 | default: | |
356 | ret = SR_ERR_NA; | |
357 | break; | |
358 | } | |
359 | ||
360 | return ret; | |
361 | } | |
362 | ||
363 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
364 | const struct sr_channel_group *cg) | |
365 | { | |
366 | GVariant *gvar; | |
367 | GVariantBuilder gvb; | |
368 | ||
369 | (void)cg; | |
370 | (void)sdi; | |
371 | ||
372 | switch (key) { | |
373 | case SR_CONF_DEVICE_OPTIONS: | |
374 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
375 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
376 | break; | |
377 | case SR_CONF_SAMPLERATE: | |
378 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
379 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
380 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
381 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
382 | *data = g_variant_builder_end(&gvb); | |
383 | break; | |
384 | case SR_CONF_TRIGGER_TYPE: | |
385 | *data = g_variant_new_string(TRIGGER_TYPE); | |
386 | break; | |
387 | default: | |
388 | return SR_ERR_NA; | |
389 | } | |
390 | ||
391 | return SR_OK; | |
392 | } | |
393 | ||
394 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
395 | { | |
396 | struct dev_context *devc; | |
397 | int ret = SR_ERR; | |
398 | ||
399 | if (sdi->status != SR_ST_ACTIVE) | |
400 | return SR_ERR_DEV_CLOSED; | |
401 | ||
402 | devc = sdi->priv; | |
403 | ||
404 | if (mso_configure_channels(sdi) != SR_OK) { | |
405 | sr_err("Failed to configure channels."); | |
406 | return SR_ERR; | |
407 | } | |
408 | ||
409 | /* FIXME: No need to do full reconfigure every time */ | |
410 | // ret = mso_reset_fsm(sdi); | |
411 | // if (ret != SR_OK) | |
412 | // return ret; | |
413 | ||
414 | /* FIXME: ACDC Mode */ | |
415 | devc->ctlbase1 &= 0x7f; | |
416 | // devc->ctlbase1 |= devc->acdcmode; | |
417 | ||
418 | ret = mso_configure_rate(sdi, devc->cur_rate); | |
419 | if (ret != SR_OK) | |
420 | return ret; | |
421 | ||
422 | /* set dac offset */ | |
423 | ret = mso_dac_out(sdi, devc->dac_offset); | |
424 | if (ret != SR_OK) | |
425 | return ret; | |
426 | ||
427 | ret = mso_configure_threshold_level(sdi); | |
428 | if (ret != SR_OK) | |
429 | return ret; | |
430 | ||
431 | ret = mso_configure_trigger(sdi); | |
432 | if (ret != SR_OK) | |
433 | return ret; | |
434 | ||
435 | /* END of config hardware part */ | |
436 | ret = mso_arm(sdi); | |
437 | if (ret != SR_OK) | |
438 | return ret; | |
439 | ||
440 | /* Start acquisition on the device. */ | |
441 | mso_check_trigger(devc->serial, &devc->trigger_state); | |
442 | ret = mso_check_trigger(devc->serial, NULL); | |
443 | if (ret != SR_OK) | |
444 | return ret; | |
445 | ||
446 | /* Reset trigger state. */ | |
447 | devc->trigger_state = 0x00; | |
448 | ||
449 | /* Send header packet to the session bus. */ | |
450 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
451 | ||
452 | /* Our first channel is analog, the other 8 are of type 'logic'. */ | |
453 | /* TODO. */ | |
454 | ||
455 | serial_source_add(sdi->session, devc->serial, G_IO_IN, -1, | |
456 | mso_receive_data, cb_data); | |
457 | ||
458 | return SR_OK; | |
459 | } | |
460 | ||
461 | /* This stops acquisition on ALL devices, ignoring dev_index. */ | |
462 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
463 | { | |
464 | (void)cb_data; | |
465 | ||
466 | stop_acquisition(sdi); | |
467 | ||
468 | return SR_OK; | |
469 | } | |
470 | ||
471 | SR_PRIV struct sr_dev_driver link_mso19_driver_info = { | |
472 | .name = "link-mso19", | |
473 | .longname = "Link Instruments MSO-19", | |
474 | .api_version = 1, | |
475 | .init = init, | |
476 | .cleanup = cleanup, | |
477 | .scan = scan, | |
478 | .dev_list = dev_list, | |
479 | .dev_clear = dev_clear, | |
480 | .config_get = config_get, | |
481 | .config_set = config_set, | |
482 | .config_list = config_list, | |
483 | .dev_open = dev_open, | |
484 | .dev_close = std_serial_dev_close, | |
485 | .dev_acquisition_start = dev_acquisition_start, | |
486 | .dev_acquisition_stop = dev_acquisition_stop, | |
487 | .context = NULL, | |
488 | }; |