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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 <stdio.h> | |
21 | #include <stdint.h> | |
22 | #include <stdlib.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <unistd.h> | |
27 | #include <string.h> | |
28 | #include <sys/time.h> | |
29 | #include <inttypes.h> | |
30 | #include <glib.h> | |
31 | #include <libusb.h> | |
32 | #include "libsigrok.h" | |
33 | #include "libsigrok-internal.h" | |
34 | #include "dso.h" | |
35 | ||
36 | /* Max time in ms before we want to check on USB events */ | |
37 | /* TODO tune this properly */ | |
38 | #define TICK 1 | |
39 | ||
40 | static const int hwcaps[] = { | |
41 | SR_HWCAP_OSCILLOSCOPE, | |
42 | SR_HWCAP_LIMIT_SAMPLES, | |
43 | SR_HWCAP_CONTINUOUS, | |
44 | SR_HWCAP_TIMEBASE, | |
45 | SR_HWCAP_BUFFERSIZE, | |
46 | SR_HWCAP_TRIGGER_SOURCE, | |
47 | SR_HWCAP_TRIGGER_SLOPE, | |
48 | SR_HWCAP_HORIZ_TRIGGERPOS, | |
49 | SR_HWCAP_FILTER, | |
50 | SR_HWCAP_VDIV, | |
51 | SR_HWCAP_COUPLING, | |
52 | 0, | |
53 | }; | |
54 | ||
55 | static const char *probe_names[] = { | |
56 | "CH1", | |
57 | "CH2", | |
58 | NULL, | |
59 | }; | |
60 | ||
61 | static const struct dso_profile dev_profiles[] = { | |
62 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
63 | "Hantek", "DSO-2090", | |
64 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, | |
65 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
66 | "Hantek", "DSO-2150", | |
67 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, | |
68 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
69 | "Hantek", "DSO-2250", | |
70 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, | |
71 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
72 | "Hantek", "DSO-5200", | |
73 | FIRMWARE_DIR "/hantek-dso-5xxx.fw" }, | |
74 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
75 | "Hantek", "DSO-5200A", | |
76 | FIRMWARE_DIR "/hantek-dso-5xxx.fw" }, | |
77 | { 0, 0, 0, 0, 0, 0, 0 }, | |
78 | }; | |
79 | ||
80 | static const uint64_t buffersizes[] = { | |
81 | 10240, | |
82 | 32768, | |
83 | /* TODO: 65535 */ | |
84 | 0, | |
85 | }; | |
86 | ||
87 | static const struct sr_rational timebases[] = { | |
88 | /* microseconds */ | |
89 | { 10, 1000000 }, | |
90 | { 20, 1000000 }, | |
91 | { 40, 1000000 }, | |
92 | { 100, 1000000 }, | |
93 | { 200, 1000000 }, | |
94 | { 400, 1000000 }, | |
95 | /* milliseconds */ | |
96 | { 1, 1000 }, | |
97 | { 2, 1000 }, | |
98 | { 4, 1000 }, | |
99 | { 10, 1000 }, | |
100 | { 20, 1000 }, | |
101 | { 40, 1000 }, | |
102 | { 100, 1000 }, | |
103 | { 200, 1000 }, | |
104 | { 400, 1000 }, | |
105 | { 0, 0}, | |
106 | }; | |
107 | ||
108 | static const struct sr_rational vdivs[] = { | |
109 | /* millivolts */ | |
110 | { 10, 1000 }, | |
111 | { 20, 1000 }, | |
112 | { 50, 1000 }, | |
113 | { 100, 1000 }, | |
114 | { 200, 1000 }, | |
115 | { 500, 1000 }, | |
116 | /* volts */ | |
117 | { 1, 1 }, | |
118 | { 2, 1 }, | |
119 | { 5, 1 }, | |
120 | { 0, 0 }, | |
121 | }; | |
122 | ||
123 | static const char *trigger_sources[] = { | |
124 | "CH1", | |
125 | "CH2", | |
126 | "EXT", | |
127 | /* TODO: forced */ | |
128 | NULL, | |
129 | }; | |
130 | ||
131 | static const char *filter_targets[] = { | |
132 | "CH1", | |
133 | "CH2", | |
134 | /* TODO: "TRIGGER", */ | |
135 | NULL, | |
136 | }; | |
137 | ||
138 | static const char *coupling[] = { | |
139 | "AC", | |
140 | "DC", | |
141 | "GND", | |
142 | NULL, | |
143 | }; | |
144 | ||
145 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info; | |
146 | static struct sr_dev_driver *hdi = &hantek_dso_driver_info; | |
147 | ||
148 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
149 | ||
150 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) | |
151 | { | |
152 | struct sr_dev_inst *sdi; | |
153 | struct sr_probe *probe; | |
154 | struct drv_context *drvc; | |
155 | struct dev_context *devc; | |
156 | int i; | |
157 | ||
158 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
159 | prof->vendor, prof->model, NULL); | |
160 | if (!sdi) | |
161 | return NULL; | |
162 | sdi->driver = hdi; | |
163 | ||
164 | /* | |
165 | * Add only the real probes -- EXT isn't a source of data, only | |
166 | * a trigger source internal to the device. | |
167 | */ | |
168 | for (i = 0; probe_names[i]; i++) { | |
169 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
170 | probe_names[i]))) | |
171 | return NULL; | |
172 | sdi->probes = g_slist_append(sdi->probes, probe); | |
173 | } | |
174 | ||
175 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
176 | sr_err("Device context malloc failed."); | |
177 | return NULL; | |
178 | } | |
179 | ||
180 | devc->profile = prof; | |
181 | devc->dev_state = IDLE; | |
182 | devc->timebase = DEFAULT_TIMEBASE; | |
183 | devc->ch1_enabled = TRUE; | |
184 | devc->ch2_enabled = TRUE; | |
185 | devc->voltage_ch1 = DEFAULT_VOLTAGE; | |
186 | devc->voltage_ch2 = DEFAULT_VOLTAGE; | |
187 | devc->coupling_ch1 = DEFAULT_COUPLING; | |
188 | devc->coupling_ch2 = DEFAULT_COUPLING; | |
189 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
190 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
191 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
192 | devc->framesize = DEFAULT_FRAMESIZE; | |
193 | devc->triggerslope = SLOPE_POSITIVE; | |
194 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
195 | devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; | |
196 | sdi->priv = devc; | |
197 | drvc = hdi->priv; | |
198 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
199 | ||
200 | return sdi; | |
201 | } | |
202 | ||
203 | static int configure_probes(const struct sr_dev_inst *sdi) | |
204 | { | |
205 | struct dev_context *devc; | |
206 | const struct sr_probe *probe; | |
207 | const GSList *l; | |
208 | ||
209 | devc = sdi->priv; | |
210 | ||
211 | devc->ch1_enabled = devc->ch2_enabled = FALSE; | |
212 | for (l = sdi->probes; l; l = l->next) { | |
213 | probe = (struct sr_probe *)l->data; | |
214 | if (probe->index == 0) | |
215 | devc->ch1_enabled = probe->enabled; | |
216 | else if (probe->index == 1) | |
217 | devc->ch2_enabled = probe->enabled; | |
218 | } | |
219 | ||
220 | return SR_OK; | |
221 | } | |
222 | ||
223 | /* Properly close and free all devices. */ | |
224 | static int clear_instances(void) | |
225 | { | |
226 | struct sr_dev_inst *sdi; | |
227 | struct drv_context *drvc; | |
228 | struct dev_context *devc; | |
229 | GSList *l; | |
230 | ||
231 | drvc = hdi->priv; | |
232 | for (l = drvc->instances; l; l = l->next) { | |
233 | if (!(sdi = l->data)) { | |
234 | /* Log error, but continue cleaning up the rest. */ | |
235 | sr_err("%s: sdi was NULL, continuing", __func__); | |
236 | continue; | |
237 | } | |
238 | if (!(devc = sdi->priv)) { | |
239 | /* Log error, but continue cleaning up the rest. */ | |
240 | sr_err("%s: sdi->priv was NULL, continuing", __func__); | |
241 | continue; | |
242 | } | |
243 | dso_close(sdi); | |
244 | sr_usb_dev_inst_free(devc->usb); | |
245 | g_free(devc->triggersource); | |
246 | ||
247 | sr_dev_inst_free(sdi); | |
248 | } | |
249 | ||
250 | g_slist_free(drvc->instances); | |
251 | drvc->instances = NULL; | |
252 | ||
253 | return SR_OK; | |
254 | } | |
255 | ||
256 | static int hw_init(struct sr_context *sr_ctx) | |
257 | { | |
258 | struct drv_context *drvc; | |
259 | ||
260 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
261 | sr_err("Driver context malloc failed."); | |
262 | return SR_ERR_MALLOC; | |
263 | } | |
264 | ||
265 | drvc->sr_ctx = sr_ctx; | |
266 | hdi->priv = drvc; | |
267 | ||
268 | return SR_OK; | |
269 | } | |
270 | ||
271 | static GSList *hw_scan(GSList *options) | |
272 | { | |
273 | struct sr_dev_inst *sdi; | |
274 | const struct dso_profile *prof; | |
275 | struct drv_context *drvc; | |
276 | struct dev_context *devc; | |
277 | GSList *devices; | |
278 | struct libusb_device_descriptor des; | |
279 | libusb_device **devlist; | |
280 | int devcnt, ret, i, j; | |
281 | ||
282 | (void)options; | |
283 | ||
284 | devcnt = 0; | |
285 | devices = 0; | |
286 | drvc = hdi->priv; | |
287 | drvc->instances = NULL; | |
288 | ||
289 | clear_instances(); | |
290 | ||
291 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
292 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
293 | for (i = 0; devlist[i]; i++) { | |
294 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
295 | sr_err("Failed to get device descriptor: %s.", | |
296 | libusb_error_name(ret)); | |
297 | continue; | |
298 | } | |
299 | ||
300 | prof = NULL; | |
301 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
302 | if (des.idVendor == dev_profiles[j].orig_vid | |
303 | && des.idProduct == dev_profiles[j].orig_pid) { | |
304 | /* Device matches the pre-firmware profile. */ | |
305 | prof = &dev_profiles[j]; | |
306 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
307 | sdi = dso_dev_new(devcnt, prof); | |
308 | devices = g_slist_append(devices, sdi); | |
309 | devc = sdi->priv; | |
310 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
311 | prof->firmware) == SR_OK) | |
312 | /* Remember when the firmware on this device was updated */ | |
313 | devc->fw_updated = g_get_monotonic_time(); | |
314 | else | |
315 | sr_err("Firmware upload failed for " | |
316 | "device %d.", devcnt); | |
317 | /* Dummy USB address of 0xff will get overwritten later. */ | |
318 | devc->usb = sr_usb_dev_inst_new( | |
319 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
320 | devcnt++; | |
321 | break; | |
322 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
323 | && des.idProduct == dev_profiles[j].fw_pid) { | |
324 | /* Device matches the post-firmware profile. */ | |
325 | prof = &dev_profiles[j]; | |
326 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
327 | sdi = dso_dev_new(devcnt, prof); | |
328 | sdi->status = SR_ST_INACTIVE; | |
329 | devices = g_slist_append(devices, sdi); | |
330 | devc = sdi->priv; | |
331 | devc->usb = sr_usb_dev_inst_new( | |
332 | libusb_get_bus_number(devlist[i]), | |
333 | libusb_get_device_address(devlist[i]), NULL); | |
334 | devcnt++; | |
335 | break; | |
336 | } | |
337 | } | |
338 | if (!prof) | |
339 | /* not a supported VID/PID */ | |
340 | continue; | |
341 | } | |
342 | libusb_free_device_list(devlist, 1); | |
343 | ||
344 | return devices; | |
345 | } | |
346 | ||
347 | static GSList *hw_dev_list(void) | |
348 | { | |
349 | struct drv_context *drvc; | |
350 | ||
351 | drvc = hdi->priv; | |
352 | ||
353 | return drvc->instances; | |
354 | } | |
355 | ||
356 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
357 | { | |
358 | struct dev_context *devc; | |
359 | int64_t timediff_us, timediff_ms; | |
360 | int err; | |
361 | ||
362 | devc = sdi->priv; | |
363 | ||
364 | /* | |
365 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
366 | * for the FX2 to renumerate. | |
367 | */ | |
368 | err = SR_ERR; | |
369 | if (devc->fw_updated > 0) { | |
370 | sr_info("Waiting for device to reset."); | |
371 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
372 | g_usleep(300 * 1000); | |
373 | timediff_ms = 0; | |
374 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
375 | if ((err = dso_open(sdi)) == SR_OK) | |
376 | break; | |
377 | g_usleep(100 * 1000); | |
378 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
379 | timediff_ms = timediff_us / 1000; | |
380 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
381 | } | |
382 | sr_info("Device came back after %d ms.", timediff_ms); | |
383 | } else { | |
384 | err = dso_open(sdi); | |
385 | } | |
386 | ||
387 | if (err != SR_OK) { | |
388 | sr_err("Unable to open device."); | |
389 | return SR_ERR; | |
390 | } | |
391 | ||
392 | err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE); | |
393 | if (err != 0) { | |
394 | sr_err("Unable to claim interface: %s.", | |
395 | libusb_error_name(err)); | |
396 | return SR_ERR; | |
397 | } | |
398 | ||
399 | return SR_OK; | |
400 | } | |
401 | ||
402 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
403 | { | |
404 | dso_close(sdi); | |
405 | ||
406 | return SR_OK; | |
407 | } | |
408 | ||
409 | static int hw_cleanup(void) | |
410 | { | |
411 | struct drv_context *drvc; | |
412 | ||
413 | if (!(drvc = hdi->priv)) | |
414 | return SR_OK; | |
415 | ||
416 | clear_instances(); | |
417 | ||
418 | return SR_OK; | |
419 | } | |
420 | ||
421 | static int hw_info_get(int info_id, const void **data, | |
422 | const struct sr_dev_inst *sdi) | |
423 | { | |
424 | uint64_t tmp; | |
425 | ||
426 | (void)sdi; | |
427 | ||
428 | switch (info_id) { | |
429 | case SR_DI_HWCAPS: | |
430 | *data = hwcaps; | |
431 | break; | |
432 | case SR_DI_NUM_PROBES: | |
433 | *data = GINT_TO_POINTER(NUM_PROBES); | |
434 | break; | |
435 | case SR_DI_PROBE_NAMES: | |
436 | *data = probe_names; | |
437 | break; | |
438 | case SR_DI_BUFFERSIZES: | |
439 | *data = buffersizes; | |
440 | break; | |
441 | case SR_DI_TIMEBASES: | |
442 | *data = timebases; | |
443 | break; | |
444 | case SR_DI_TRIGGER_SOURCES: | |
445 | *data = trigger_sources; | |
446 | break; | |
447 | case SR_DI_FILTERS: | |
448 | *data = filter_targets; | |
449 | break; | |
450 | case SR_DI_VDIVS: | |
451 | *data = vdivs; | |
452 | break; | |
453 | case SR_DI_COUPLING: | |
454 | *data = coupling; | |
455 | break; | |
456 | /* TODO remove this */ | |
457 | case SR_DI_CUR_SAMPLERATE: | |
458 | *data = &tmp; | |
459 | break; | |
460 | default: | |
461 | return SR_ERR_ARG; | |
462 | } | |
463 | ||
464 | return SR_OK; | |
465 | } | |
466 | ||
467 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
468 | const void *value) | |
469 | { | |
470 | struct dev_context *devc; | |
471 | struct sr_rational tmp_rat; | |
472 | float tmp_float; | |
473 | uint64_t tmp_u64; | |
474 | int ret, i; | |
475 | char **targets; | |
476 | ||
477 | if (sdi->status != SR_ST_ACTIVE) | |
478 | return SR_ERR; | |
479 | ||
480 | ret = SR_OK; | |
481 | devc = sdi->priv; | |
482 | switch (hwcap) { | |
483 | case SR_HWCAP_LIMIT_FRAMES: | |
484 | devc->limit_frames = *(const uint64_t *)value; | |
485 | break; | |
486 | case SR_HWCAP_TRIGGER_SLOPE: | |
487 | tmp_u64 = *(const int *)value; | |
488 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) | |
489 | ret = SR_ERR_ARG; | |
490 | devc->triggerslope = tmp_u64; | |
491 | break; | |
492 | case SR_HWCAP_HORIZ_TRIGGERPOS: | |
493 | tmp_float = *(const float *)value; | |
494 | if (tmp_float < 0.0 || tmp_float > 1.0) { | |
495 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
496 | ret = SR_ERR_ARG; | |
497 | } else | |
498 | devc->triggerposition = tmp_float; | |
499 | break; | |
500 | case SR_HWCAP_BUFFERSIZE: | |
501 | tmp_u64 = *(const int *)value; | |
502 | for (i = 0; buffersizes[i]; i++) { | |
503 | if (buffersizes[i] == tmp_u64) { | |
504 | devc->framesize = tmp_u64; | |
505 | break; | |
506 | } | |
507 | } | |
508 | if (buffersizes[i] == 0) | |
509 | ret = SR_ERR_ARG; | |
510 | break; | |
511 | case SR_HWCAP_TIMEBASE: | |
512 | tmp_rat = *(const struct sr_rational *)value; | |
513 | for (i = 0; timebases[i].p && timebases[i].q; i++) { | |
514 | if (timebases[i].p == tmp_rat.p | |
515 | && timebases[i].q == tmp_rat.q) { | |
516 | devc->timebase = i; | |
517 | break; | |
518 | } | |
519 | } | |
520 | if (timebases[i].p == 0 && timebases[i].q == 0) | |
521 | ret = SR_ERR_ARG; | |
522 | break; | |
523 | case SR_HWCAP_TRIGGER_SOURCE: | |
524 | for (i = 0; trigger_sources[i]; i++) { | |
525 | if (!strcmp(value, trigger_sources[i])) { | |
526 | devc->triggersource = g_strdup(value); | |
527 | break; | |
528 | } | |
529 | } | |
530 | if (trigger_sources[i] == 0) | |
531 | ret = SR_ERR_ARG; | |
532 | break; | |
533 | case SR_HWCAP_FILTER: | |
534 | devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; | |
535 | targets = g_strsplit(value, ",", 0); | |
536 | for (i = 0; targets[i]; i++) { | |
537 | if (targets[i] == '\0') | |
538 | /* Empty filter string can be used to clear them all. */ | |
539 | ; | |
540 | else if (!strcmp(targets[i], "CH1")) | |
541 | devc->filter_ch1 = TRUE; | |
542 | else if (!strcmp(targets[i], "CH2")) | |
543 | devc->filter_ch2 = TRUE; | |
544 | else if (!strcmp(targets[i], "TRIGGER")) | |
545 | devc->filter_trigger = TRUE; | |
546 | else { | |
547 | sr_err("Invalid filter target %s.", targets[i]); | |
548 | ret = SR_ERR_ARG; | |
549 | } | |
550 | } | |
551 | g_strfreev(targets); | |
552 | break; | |
553 | case SR_HWCAP_VDIV: | |
554 | /* TODO: Not supporting vdiv per channel yet. */ | |
555 | tmp_rat = *(const struct sr_rational *)value; | |
556 | for (i = 0; vdivs[i].p && vdivs[i].q; i++) { | |
557 | if (vdivs[i].p == tmp_rat.p | |
558 | && vdivs[i].q == tmp_rat.q) { | |
559 | devc->voltage_ch1 = i; | |
560 | devc->voltage_ch2 = i; | |
561 | break; | |
562 | } | |
563 | } | |
564 | if (vdivs[i].p == 0 && vdivs[i].q == 0) | |
565 | ret = SR_ERR_ARG; | |
566 | break; | |
567 | case SR_HWCAP_COUPLING: | |
568 | /* TODO: Not supporting coupling per channel yet. */ | |
569 | for (i = 0; coupling[i]; i++) { | |
570 | if (!strcmp(value, coupling[i])) { | |
571 | devc->coupling_ch1 = i; | |
572 | devc->coupling_ch2 = i; | |
573 | break; | |
574 | } | |
575 | } | |
576 | if (coupling[i] == 0) | |
577 | ret = SR_ERR_ARG; | |
578 | break; | |
579 | default: | |
580 | ret = SR_ERR_ARG; | |
581 | break; | |
582 | } | |
583 | ||
584 | return ret; | |
585 | } | |
586 | ||
587 | static void send_chunk(struct dev_context *devc, unsigned char *buf, | |
588 | int num_samples) | |
589 | { | |
590 | struct sr_datafeed_packet packet; | |
591 | struct sr_datafeed_analog analog; | |
592 | float ch1, ch2, range; | |
593 | int num_probes, data_offset, i; | |
594 | ||
595 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
596 | packet.type = SR_DF_ANALOG; | |
597 | packet.payload = &analog; | |
598 | /* TODO: support for 5xxx series 9-bit samples */ | |
599 | analog.num_samples = num_samples; | |
600 | analog.mq = SR_MQ_VOLTAGE; | |
601 | analog.unit = SR_UNIT_VOLT; | |
602 | /* TODO: Check malloc return value. */ | |
603 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); | |
604 | data_offset = 0; | |
605 | for (i = 0; i < analog.num_samples; i++) { | |
606 | /* | |
607 | * The device always sends data for both channels. If a channel | |
608 | * is disabled, it contains a copy of the enabled channel's | |
609 | * data. However, we only send the requested channels to | |
610 | * the bus. | |
611 | * | |
612 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
613 | * DSO-5200*), where the value is a point in the range | |
614 | * represented by the vdiv setting. There are 8 vertical divs, | |
615 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
616 | * and 255 = +2V. | |
617 | */ | |
618 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
619 | if (devc->ch1_enabled) { | |
620 | range = ((float)vdivs[devc->voltage_ch1].p / vdivs[devc->voltage_ch1].q) * 8; | |
621 | ch1 = range / 255 * *(buf + i * 2 + 1); | |
622 | /* Value is centered around 0V. */ | |
623 | ch1 -= range / 2; | |
624 | analog.data[data_offset++] = ch1; | |
625 | } | |
626 | if (devc->ch2_enabled) { | |
627 | range = ((float)vdivs[devc->voltage_ch2].p / vdivs[devc->voltage_ch2].q) * 8; | |
628 | ch2 = range / 255 * *(buf + i * 2); | |
629 | ch2 -= range / 2; | |
630 | analog.data[data_offset++] = ch2; | |
631 | } | |
632 | } | |
633 | sr_session_send(devc->cb_data, &packet); | |
634 | } | |
635 | ||
636 | /* | |
637 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
638 | * Only channel data comes in asynchronously, and all transfers for this are | |
639 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
640 | * the libsigrok session bus. | |
641 | */ | |
642 | static void receive_transfer(struct libusb_transfer *transfer) | |
643 | { | |
644 | struct sr_datafeed_packet packet; | |
645 | struct dev_context *devc; | |
646 | int num_samples, pre; | |
647 | ||
648 | devc = transfer->user_data; | |
649 | sr_dbg("receive_transfer(): status %d received %d bytes.", | |
650 | transfer->status, transfer->actual_length); | |
651 | ||
652 | if (transfer->actual_length == 0) | |
653 | /* Nothing to send to the bus. */ | |
654 | return; | |
655 | ||
656 | num_samples = transfer->actual_length / 2; | |
657 | ||
658 | sr_dbg("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
659 | devc->samp_received + num_samples, devc->framesize); | |
660 | ||
661 | /* | |
662 | * The device always sends a full frame, but the beginning of the frame | |
663 | * doesn't represent the trigger point. The offset at which the trigger | |
664 | * happened came in with the capture state, so we need to start sending | |
665 | * from there up the session bus. The samples in the frame buffer | |
666 | * before that trigger point came after the end of the device's frame | |
667 | * buffer was reached, and it wrapped around to overwrite up until the | |
668 | * trigger point. | |
669 | */ | |
670 | if (devc->samp_received < devc->trigger_offset) { | |
671 | /* Trigger point not yet reached. */ | |
672 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
673 | /* The entire chunk is before the trigger point. */ | |
674 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
675 | transfer->buffer, num_samples * 2); | |
676 | devc->samp_buffered += num_samples; | |
677 | } else { | |
678 | /* | |
679 | * This chunk hits or overruns the trigger point. | |
680 | * Store the part before the trigger fired, and | |
681 | * send the rest up to the session bus. | |
682 | */ | |
683 | pre = devc->trigger_offset - devc->samp_received; | |
684 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
685 | transfer->buffer, pre * 2); | |
686 | devc->samp_buffered += pre; | |
687 | ||
688 | /* The rest of this chunk starts with the trigger point. */ | |
689 | sr_dbg("Reached trigger point, %d samples buffered.", | |
690 | devc->samp_buffered); | |
691 | ||
692 | /* Avoid the corner case where the chunk ended at | |
693 | * exactly the trigger point. */ | |
694 | if (num_samples > pre) | |
695 | send_chunk(devc, transfer->buffer + pre * 2, | |
696 | num_samples - pre); | |
697 | } | |
698 | } else { | |
699 | /* Already past the trigger point, just send it all out. */ | |
700 | send_chunk(devc, transfer->buffer, | |
701 | num_samples); | |
702 | } | |
703 | ||
704 | devc->samp_received += num_samples; | |
705 | ||
706 | /* Everything in this transfer was either copied to the buffer or | |
707 | * sent to the session bus. */ | |
708 | g_free(transfer->buffer); | |
709 | libusb_free_transfer(transfer); | |
710 | ||
711 | if (devc->samp_received >= devc->framesize) { | |
712 | /* That was the last chunk in this frame. Send the buffered | |
713 | * pre-trigger samples out now, in one big chunk. */ | |
714 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
715 | devc->samp_buffered); | |
716 | send_chunk(devc, devc->framebuf, devc->samp_buffered); | |
717 | ||
718 | /* Mark the end of this frame. */ | |
719 | packet.type = SR_DF_FRAME_END; | |
720 | sr_session_send(devc->cb_data, &packet); | |
721 | ||
722 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
723 | /* Terminate session */ | |
724 | devc->dev_state = STOPPING; | |
725 | } else { | |
726 | devc->dev_state = NEW_CAPTURE; | |
727 | } | |
728 | } | |
729 | } | |
730 | ||
731 | static int handle_event(int fd, int revents, void *cb_data) | |
732 | { | |
733 | const struct sr_dev_inst *sdi; | |
734 | struct sr_datafeed_packet packet; | |
735 | struct timeval tv; | |
736 | struct dev_context *devc; | |
737 | struct drv_context *drvc = hdi->priv; | |
738 | const struct libusb_pollfd **lupfd; | |
739 | int num_probes, i; | |
740 | uint32_t trigger_offset; | |
741 | uint8_t capturestate; | |
742 | ||
743 | (void)fd; | |
744 | (void)revents; | |
745 | ||
746 | sdi = cb_data; | |
747 | devc = sdi->priv; | |
748 | if (devc->dev_state == STOPPING) { | |
749 | /* We've been told to wind up the acquisition. */ | |
750 | sr_dbg("Stopping acquisition."); | |
751 | /* | |
752 | * TODO: Doesn't really cancel pending transfers so they might | |
753 | * come in after SR_DF_END is sent. | |
754 | */ | |
755 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
756 | for (i = 0; lupfd[i]; i++) | |
757 | sr_source_remove(lupfd[i]->fd); | |
758 | free(lupfd); | |
759 | ||
760 | packet.type = SR_DF_END; | |
761 | sr_session_send(sdi, &packet); | |
762 | ||
763 | devc->dev_state = IDLE; | |
764 | ||
765 | return TRUE; | |
766 | } | |
767 | ||
768 | /* Always handle pending libusb events. */ | |
769 | tv.tv_sec = tv.tv_usec = 0; | |
770 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
771 | ||
772 | /* TODO: ugh */ | |
773 | if (devc->dev_state == NEW_CAPTURE) { | |
774 | if (dso_capture_start(devc) != SR_OK) | |
775 | return TRUE; | |
776 | if (dso_enable_trigger(devc) != SR_OK) | |
777 | return TRUE; | |
778 | // if (dso_force_trigger(devc) != SR_OK) | |
779 | // return TRUE; | |
780 | sr_dbg("Successfully requested next chunk."); | |
781 | devc->dev_state = CAPTURE; | |
782 | return TRUE; | |
783 | } | |
784 | if (devc->dev_state != CAPTURE) | |
785 | return TRUE; | |
786 | ||
787 | if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK) | |
788 | return TRUE; | |
789 | ||
790 | sr_dbg("Capturestate %d.", capturestate); | |
791 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
792 | switch (capturestate) { | |
793 | case CAPTURE_EMPTY: | |
794 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
795 | devc->capture_empty_count = 0; | |
796 | if (dso_capture_start(devc) != SR_OK) | |
797 | break; | |
798 | if (dso_enable_trigger(devc) != SR_OK) | |
799 | break; | |
800 | // if (dso_force_trigger(devc) != SR_OK) | |
801 | // break; | |
802 | sr_dbg("Successfully requested next chunk."); | |
803 | } | |
804 | break; | |
805 | case CAPTURE_FILLING: | |
806 | /* No data yet. */ | |
807 | break; | |
808 | case CAPTURE_READY_8BIT: | |
809 | /* Remember where in the captured frame the trigger is. */ | |
810 | devc->trigger_offset = trigger_offset; | |
811 | ||
812 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
813 | /* TODO: Check malloc return value. */ | |
814 | devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); | |
815 | devc->samp_buffered = devc->samp_received = 0; | |
816 | ||
817 | /* Tell the scope to send us the first frame. */ | |
818 | if (dso_get_channeldata(devc, receive_transfer) != SR_OK) | |
819 | break; | |
820 | ||
821 | /* | |
822 | * Don't hit the state machine again until we're done fetching | |
823 | * the data we just told the scope to send. | |
824 | */ | |
825 | devc->dev_state = FETCH_DATA; | |
826 | ||
827 | /* Tell the frontend a new frame is on the way. */ | |
828 | packet.type = SR_DF_FRAME_BEGIN; | |
829 | sr_session_send(sdi, &packet); | |
830 | break; | |
831 | case CAPTURE_READY_9BIT: | |
832 | /* TODO */ | |
833 | sr_err("Not yet supported."); | |
834 | break; | |
835 | case CAPTURE_TIMEOUT: | |
836 | /* Doesn't matter, we'll try again next time. */ | |
837 | break; | |
838 | default: | |
839 | sr_dbg("Unknown capture state: %d.", capturestate); | |
840 | break; | |
841 | } | |
842 | ||
843 | return TRUE; | |
844 | } | |
845 | ||
846 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
847 | void *cb_data) | |
848 | { | |
849 | const struct libusb_pollfd **lupfd; | |
850 | struct sr_datafeed_packet packet; | |
851 | struct sr_datafeed_header header; | |
852 | struct sr_datafeed_meta_analog meta; | |
853 | struct dev_context *devc; | |
854 | struct drv_context *drvc = hdi->priv; | |
855 | int i; | |
856 | ||
857 | if (sdi->status != SR_ST_ACTIVE) | |
858 | return SR_ERR; | |
859 | ||
860 | devc = sdi->priv; | |
861 | devc->cb_data = cb_data; | |
862 | ||
863 | if (configure_probes(sdi) != SR_OK) { | |
864 | sr_err("Failed to configure probes."); | |
865 | return SR_ERR; | |
866 | } | |
867 | ||
868 | if (dso_init(devc) != SR_OK) | |
869 | return SR_ERR; | |
870 | ||
871 | if (dso_capture_start(devc) != SR_OK) | |
872 | return SR_ERR; | |
873 | ||
874 | devc->dev_state = CAPTURE; | |
875 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
876 | for (i = 0; lupfd[i]; i++) | |
877 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, | |
878 | handle_event, (void *)sdi); | |
879 | free(lupfd); | |
880 | ||
881 | /* Send header packet to the session bus. */ | |
882 | packet.type = SR_DF_HEADER; | |
883 | packet.payload = (unsigned char *)&header; | |
884 | header.feed_version = 1; | |
885 | gettimeofday(&header.starttime, NULL); | |
886 | sr_session_send(cb_data, &packet); | |
887 | ||
888 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
889 | packet.type = SR_DF_META_ANALOG; | |
890 | packet.payload = &meta; | |
891 | meta.num_probes = NUM_PROBES; | |
892 | sr_session_send(cb_data, &packet); | |
893 | ||
894 | return SR_OK; | |
895 | } | |
896 | ||
897 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
898 | { | |
899 | struct dev_context *devc; | |
900 | ||
901 | (void)cb_data; | |
902 | ||
903 | if (sdi->status != SR_ST_ACTIVE) | |
904 | return SR_ERR; | |
905 | ||
906 | devc = sdi->priv; | |
907 | devc->dev_state = STOPPING; | |
908 | ||
909 | return SR_OK; | |
910 | } | |
911 | ||
912 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { | |
913 | .name = "hantek-dso", | |
914 | .longname = "Hantek DSO", | |
915 | .api_version = 1, | |
916 | .init = hw_init, | |
917 | .cleanup = hw_cleanup, | |
918 | .scan = hw_scan, | |
919 | .dev_list = hw_dev_list, | |
920 | .dev_clear = clear_instances, | |
921 | .dev_open = hw_dev_open, | |
922 | .dev_close = hw_dev_close, | |
923 | .info_get = hw_info_get, | |
924 | .dev_config_set = hw_dev_config_set, | |
925 | .dev_acquisition_start = hw_dev_acquisition_start, | |
926 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
927 | .priv = NULL, | |
928 | }; |