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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 | #define NUM_TIMEBASE 10 | |
41 | #define NUM_VDIV 8 | |
42 | ||
43 | static const int32_t devopts[] = { | |
44 | SR_CONF_OSCILLOSCOPE, | |
45 | SR_CONF_LIMIT_FRAMES, | |
46 | SR_CONF_CONTINUOUS, | |
47 | SR_CONF_TIMEBASE, | |
48 | SR_CONF_BUFFERSIZE, | |
49 | SR_CONF_TRIGGER_SOURCE, | |
50 | SR_CONF_TRIGGER_SLOPE, | |
51 | SR_CONF_HORIZ_TRIGGERPOS, | |
52 | SR_CONF_FILTER, | |
53 | SR_CONF_VDIV, | |
54 | SR_CONF_COUPLING, | |
55 | SR_CONF_NUM_TIMEBASE, | |
56 | SR_CONF_NUM_VDIV, | |
57 | }; | |
58 | ||
59 | static const char *probe_names[] = { | |
60 | "CH1", "CH2", | |
61 | NULL, | |
62 | }; | |
63 | ||
64 | static const uint64_t buffersizes_32k[] = { | |
65 | 10240, 32768, | |
66 | }; | |
67 | static const uint64_t buffersizes_512k[] = { | |
68 | 10240, 524288, | |
69 | }; | |
70 | static const uint64_t buffersizes_14k[] = { | |
71 | 10240, 14336, | |
72 | }; | |
73 | ||
74 | static const struct dso_profile dev_profiles[] = { | |
75 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
76 | "Hantek", "DSO-2090", | |
77 | buffersizes_32k, | |
78 | FIRMWARE_DIR "/hantek-dso-2090.fw" }, | |
79 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
80 | "Hantek", "DSO-2150", | |
81 | buffersizes_32k, | |
82 | FIRMWARE_DIR "/hantek-dso-2150.fw" }, | |
83 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
84 | "Hantek", "DSO-2250", | |
85 | buffersizes_512k, | |
86 | FIRMWARE_DIR "/hantek-dso-2250.fw" }, | |
87 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
88 | "Hantek", "DSO-5200", | |
89 | buffersizes_14k, | |
90 | FIRMWARE_DIR "/hantek-dso-5200.fw" }, | |
91 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
92 | "Hantek", "DSO-5200A", | |
93 | buffersizes_512k, | |
94 | FIRMWARE_DIR "/hantek-dso-5200A.fw" }, | |
95 | { 0, 0, 0, 0, 0, 0, 0, 0 }, | |
96 | }; | |
97 | ||
98 | static const uint64_t timebases[][2] = { | |
99 | /* microseconds */ | |
100 | { 10, 1000000 }, | |
101 | { 20, 1000000 }, | |
102 | { 40, 1000000 }, | |
103 | { 100, 1000000 }, | |
104 | { 200, 1000000 }, | |
105 | { 400, 1000000 }, | |
106 | /* milliseconds */ | |
107 | { 1, 1000 }, | |
108 | { 2, 1000 }, | |
109 | { 4, 1000 }, | |
110 | { 10, 1000 }, | |
111 | { 20, 1000 }, | |
112 | { 40, 1000 }, | |
113 | { 100, 1000 }, | |
114 | { 200, 1000 }, | |
115 | { 400, 1000 }, | |
116 | }; | |
117 | ||
118 | static const uint64_t vdivs[][2] = { | |
119 | /* millivolts */ | |
120 | { 10, 1000 }, | |
121 | { 20, 1000 }, | |
122 | { 50, 1000 }, | |
123 | { 100, 1000 }, | |
124 | { 200, 1000 }, | |
125 | { 500, 1000 }, | |
126 | /* volts */ | |
127 | { 1, 1 }, | |
128 | { 2, 1 }, | |
129 | { 5, 1 }, | |
130 | }; | |
131 | ||
132 | static const char *trigger_sources[] = { | |
133 | "CH1", | |
134 | "CH2", | |
135 | "EXT", | |
136 | /* TODO: forced */ | |
137 | }; | |
138 | ||
139 | static const char *filter_targets[] = { | |
140 | "CH1", | |
141 | "CH2", | |
142 | /* TODO: "TRIGGER", */ | |
143 | }; | |
144 | ||
145 | static const char *coupling[] = { | |
146 | "AC", | |
147 | "DC", | |
148 | "GND", | |
149 | }; | |
150 | ||
151 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info; | |
152 | static struct sr_dev_driver *di = &hantek_dso_driver_info; | |
153 | ||
154 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
155 | ||
156 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) | |
157 | { | |
158 | struct sr_dev_inst *sdi; | |
159 | struct sr_probe *probe; | |
160 | struct drv_context *drvc; | |
161 | struct dev_context *devc; | |
162 | int i; | |
163 | ||
164 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
165 | prof->vendor, prof->model, NULL); | |
166 | if (!sdi) | |
167 | return NULL; | |
168 | sdi->driver = di; | |
169 | ||
170 | /* | |
171 | * Add only the real probes -- EXT isn't a source of data, only | |
172 | * a trigger source internal to the device. | |
173 | */ | |
174 | for (i = 0; probe_names[i]; i++) { | |
175 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
176 | probe_names[i]))) | |
177 | return NULL; | |
178 | sdi->probes = g_slist_append(sdi->probes, probe); | |
179 | } | |
180 | ||
181 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
182 | sr_err("Device context malloc failed."); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | devc->profile = prof; | |
187 | devc->dev_state = IDLE; | |
188 | devc->timebase = DEFAULT_TIMEBASE; | |
189 | devc->ch1_enabled = TRUE; | |
190 | devc->ch2_enabled = TRUE; | |
191 | devc->voltage_ch1 = DEFAULT_VOLTAGE; | |
192 | devc->voltage_ch2 = DEFAULT_VOLTAGE; | |
193 | devc->coupling_ch1 = DEFAULT_COUPLING; | |
194 | devc->coupling_ch2 = DEFAULT_COUPLING; | |
195 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
196 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
197 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
198 | devc->framesize = DEFAULT_FRAMESIZE; | |
199 | devc->triggerslope = SLOPE_POSITIVE; | |
200 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
201 | devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; | |
202 | sdi->priv = devc; | |
203 | drvc = di->priv; | |
204 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
205 | ||
206 | return sdi; | |
207 | } | |
208 | ||
209 | static int configure_probes(const struct sr_dev_inst *sdi) | |
210 | { | |
211 | struct dev_context *devc; | |
212 | struct sr_probe *probe; | |
213 | const GSList *l; | |
214 | int p; | |
215 | ||
216 | devc = sdi->priv; | |
217 | ||
218 | g_slist_free(devc->enabled_probes); | |
219 | devc->ch1_enabled = devc->ch2_enabled = FALSE; | |
220 | for (l = sdi->probes, p = 0; l; l = l->next, p++) { | |
221 | probe = l->data; | |
222 | if (p == 0) | |
223 | devc->ch1_enabled = probe->enabled; | |
224 | else | |
225 | devc->ch2_enabled = probe->enabled; | |
226 | if (probe->enabled) | |
227 | devc->enabled_probes = g_slist_append(devc->enabled_probes, probe); | |
228 | } | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
233 | static void clear_dev_context(void *priv) | |
234 | { | |
235 | struct dev_context *devc; | |
236 | ||
237 | devc = priv; | |
238 | g_free(devc->triggersource); | |
239 | g_slist_free(devc->enabled_probes); | |
240 | ||
241 | } | |
242 | ||
243 | static int clear_instances(void) | |
244 | { | |
245 | return std_dev_clear(di, clear_dev_context); | |
246 | } | |
247 | ||
248 | static int hw_init(struct sr_context *sr_ctx) | |
249 | { | |
250 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
251 | } | |
252 | ||
253 | static GSList *hw_scan(GSList *options) | |
254 | { | |
255 | struct sr_dev_inst *sdi; | |
256 | const struct dso_profile *prof; | |
257 | struct drv_context *drvc; | |
258 | struct dev_context *devc; | |
259 | GSList *devices; | |
260 | struct libusb_device_descriptor des; | |
261 | libusb_device **devlist; | |
262 | int devcnt, ret, i, j; | |
263 | ||
264 | (void)options; | |
265 | ||
266 | drvc = di->priv; | |
267 | drvc->instances = NULL; | |
268 | ||
269 | devcnt = 0; | |
270 | devices = 0; | |
271 | ||
272 | clear_instances(); | |
273 | ||
274 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
275 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
276 | for (i = 0; devlist[i]; i++) { | |
277 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
278 | sr_err("Failed to get device descriptor: %s.", | |
279 | libusb_error_name(ret)); | |
280 | continue; | |
281 | } | |
282 | ||
283 | prof = NULL; | |
284 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
285 | if (des.idVendor == dev_profiles[j].orig_vid | |
286 | && des.idProduct == dev_profiles[j].orig_pid) { | |
287 | /* Device matches the pre-firmware profile. */ | |
288 | prof = &dev_profiles[j]; | |
289 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
290 | sdi = dso_dev_new(devcnt, prof); | |
291 | devices = g_slist_append(devices, sdi); | |
292 | devc = sdi->priv; | |
293 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
294 | prof->firmware) == SR_OK) | |
295 | /* Remember when the firmware on this device was updated */ | |
296 | devc->fw_updated = g_get_monotonic_time(); | |
297 | else | |
298 | sr_err("Firmware upload failed for " | |
299 | "device %d.", devcnt); | |
300 | /* Dummy USB address of 0xff will get overwritten later. */ | |
301 | sdi->conn = sr_usb_dev_inst_new( | |
302 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
303 | devcnt++; | |
304 | break; | |
305 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
306 | && des.idProduct == dev_profiles[j].fw_pid) { | |
307 | /* Device matches the post-firmware profile. */ | |
308 | prof = &dev_profiles[j]; | |
309 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
310 | sdi = dso_dev_new(devcnt, prof); | |
311 | sdi->status = SR_ST_INACTIVE; | |
312 | devices = g_slist_append(devices, sdi); | |
313 | devc = sdi->priv; | |
314 | sdi->inst_type = SR_INST_USB; | |
315 | sdi->conn = sr_usb_dev_inst_new( | |
316 | libusb_get_bus_number(devlist[i]), | |
317 | libusb_get_device_address(devlist[i]), NULL); | |
318 | devcnt++; | |
319 | break; | |
320 | } | |
321 | } | |
322 | if (!prof) | |
323 | /* not a supported VID/PID */ | |
324 | continue; | |
325 | } | |
326 | libusb_free_device_list(devlist, 1); | |
327 | ||
328 | return devices; | |
329 | } | |
330 | ||
331 | static GSList *hw_dev_list(void) | |
332 | { | |
333 | return ((struct drv_context *)(di->priv))->instances; | |
334 | } | |
335 | ||
336 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
337 | { | |
338 | struct dev_context *devc; | |
339 | struct sr_usb_dev_inst *usb; | |
340 | int64_t timediff_us, timediff_ms; | |
341 | int err; | |
342 | ||
343 | devc = sdi->priv; | |
344 | usb = sdi->conn; | |
345 | ||
346 | /* | |
347 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
348 | * for the FX2 to renumerate. | |
349 | */ | |
350 | err = SR_ERR; | |
351 | if (devc->fw_updated > 0) { | |
352 | sr_info("Waiting for device to reset."); | |
353 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
354 | g_usleep(300 * 1000); | |
355 | timediff_ms = 0; | |
356 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
357 | if ((err = dso_open(sdi)) == SR_OK) | |
358 | break; | |
359 | g_usleep(100 * 1000); | |
360 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
361 | timediff_ms = timediff_us / 1000; | |
362 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
363 | } | |
364 | sr_info("Device came back after %d ms.", timediff_ms); | |
365 | } else { | |
366 | err = dso_open(sdi); | |
367 | } | |
368 | ||
369 | if (err != SR_OK) { | |
370 | sr_err("Unable to open device."); | |
371 | return SR_ERR; | |
372 | } | |
373 | ||
374 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
375 | if (err != 0) { | |
376 | sr_err("Unable to claim interface: %s.", | |
377 | libusb_error_name(err)); | |
378 | return SR_ERR; | |
379 | } | |
380 | ||
381 | return SR_OK; | |
382 | } | |
383 | ||
384 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
385 | { | |
386 | dso_close(sdi); | |
387 | ||
388 | return SR_OK; | |
389 | } | |
390 | ||
391 | static int hw_cleanup(void) | |
392 | { | |
393 | struct drv_context *drvc; | |
394 | ||
395 | if (!(drvc = di->priv)) | |
396 | return SR_OK; | |
397 | ||
398 | clear_instances(); | |
399 | ||
400 | return SR_OK; | |
401 | } | |
402 | ||
403 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) | |
404 | { | |
405 | ||
406 | (void)sdi; | |
407 | ||
408 | switch (id) { | |
409 | case SR_CONF_NUM_TIMEBASE: | |
410 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
411 | break; | |
412 | case SR_CONF_NUM_VDIV: | |
413 | *data = g_variant_new_int32(NUM_VDIV); | |
414 | break; | |
415 | default: | |
416 | return SR_ERR_NA; | |
417 | } | |
418 | ||
419 | return SR_OK; | |
420 | } | |
421 | ||
422 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
423 | { | |
424 | struct dev_context *devc; | |
425 | double tmp_double; | |
426 | uint64_t tmp_u64, p, q; | |
427 | int tmp_int, ret; | |
428 | unsigned int i; | |
429 | const char *tmp_str; | |
430 | char **targets; | |
431 | ||
432 | if (sdi->status != SR_ST_ACTIVE) | |
433 | return SR_ERR; | |
434 | ||
435 | ret = SR_OK; | |
436 | devc = sdi->priv; | |
437 | switch (id) { | |
438 | case SR_CONF_LIMIT_FRAMES: | |
439 | devc->limit_frames = g_variant_get_uint64(data); | |
440 | break; | |
441 | case SR_CONF_TRIGGER_SLOPE: | |
442 | tmp_u64 = g_variant_get_uint64(data); | |
443 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) | |
444 | ret = SR_ERR_ARG; | |
445 | devc->triggerslope = tmp_u64; | |
446 | break; | |
447 | case SR_CONF_HORIZ_TRIGGERPOS: | |
448 | tmp_double = g_variant_get_double(data); | |
449 | if (tmp_double < 0.0 || tmp_double > 1.0) { | |
450 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
451 | ret = SR_ERR_ARG; | |
452 | } else | |
453 | devc->triggerposition = tmp_double; | |
454 | break; | |
455 | case SR_CONF_BUFFERSIZE: | |
456 | tmp_u64 = g_variant_get_uint64(data); | |
457 | for (i = 0; i < 2; i++) { | |
458 | if (devc->profile->buffersizes[i] == tmp_u64) { | |
459 | devc->framesize = tmp_u64; | |
460 | break; | |
461 | } | |
462 | } | |
463 | if (i == 2) | |
464 | ret = SR_ERR_ARG; | |
465 | break; | |
466 | case SR_CONF_TIMEBASE: | |
467 | g_variant_get(data, "(tt)", &p, &q); | |
468 | tmp_int = -1; | |
469 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
470 | if (timebases[i][0] == p && timebases[i][1] == q) { | |
471 | tmp_int = i; | |
472 | break; | |
473 | } | |
474 | } | |
475 | if (tmp_int >= 0) | |
476 | devc->timebase = tmp_int; | |
477 | else | |
478 | ret = SR_ERR_ARG; | |
479 | break; | |
480 | case SR_CONF_TRIGGER_SOURCE: | |
481 | tmp_str = g_variant_get_string(data, NULL); | |
482 | for (i = 0; trigger_sources[i]; i++) { | |
483 | if (!strcmp(tmp_str, trigger_sources[i])) { | |
484 | devc->triggersource = g_strdup(tmp_str); | |
485 | break; | |
486 | } | |
487 | } | |
488 | if (trigger_sources[i] == 0) | |
489 | ret = SR_ERR_ARG; | |
490 | break; | |
491 | case SR_CONF_FILTER: | |
492 | tmp_str = g_variant_get_string(data, NULL); | |
493 | devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; | |
494 | targets = g_strsplit(tmp_str, ",", 0); | |
495 | for (i = 0; targets[i]; i++) { | |
496 | if (targets[i] == '\0') | |
497 | /* Empty filter string can be used to clear them all. */ | |
498 | ; | |
499 | else if (!strcmp(targets[i], "CH1")) | |
500 | devc->filter_ch1 = TRUE; | |
501 | else if (!strcmp(targets[i], "CH2")) | |
502 | devc->filter_ch2 = TRUE; | |
503 | else if (!strcmp(targets[i], "TRIGGER")) | |
504 | devc->filter_trigger = TRUE; | |
505 | else { | |
506 | sr_err("Invalid filter target %s.", targets[i]); | |
507 | ret = SR_ERR_ARG; | |
508 | } | |
509 | } | |
510 | g_strfreev(targets); | |
511 | break; | |
512 | case SR_CONF_VDIV: | |
513 | /* TODO: Not supporting vdiv per channel yet. */ | |
514 | g_variant_get(data, "(tt)", &p, &q); | |
515 | tmp_int = -1; | |
516 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
517 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
518 | tmp_int = i; | |
519 | break; | |
520 | } | |
521 | } | |
522 | if (tmp_int >= 0) { | |
523 | devc->voltage_ch1 = tmp_int; | |
524 | devc->voltage_ch2 = tmp_int; | |
525 | } else | |
526 | ret = SR_ERR_ARG; | |
527 | break; | |
528 | case SR_CONF_COUPLING: | |
529 | tmp_str = g_variant_get_string(data, NULL); | |
530 | /* TODO: Not supporting coupling per channel yet. */ | |
531 | for (i = 0; coupling[i]; i++) { | |
532 | if (!strcmp(tmp_str, coupling[i])) { | |
533 | devc->coupling_ch1 = i; | |
534 | devc->coupling_ch2 = i; | |
535 | break; | |
536 | } | |
537 | } | |
538 | if (coupling[i] == 0) | |
539 | ret = SR_ERR_ARG; | |
540 | break; | |
541 | default: | |
542 | ret = SR_ERR_NA; | |
543 | break; | |
544 | } | |
545 | ||
546 | return ret; | |
547 | } | |
548 | ||
549 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
550 | { | |
551 | struct dev_context *devc; | |
552 | GVariant *tuple, *rational[2]; | |
553 | GVariantBuilder gvb; | |
554 | unsigned int i; | |
555 | ||
556 | (void)sdi; | |
557 | ||
558 | if (!sdi) | |
559 | return SR_ERR_ARG; | |
560 | ||
561 | devc = sdi->priv; | |
562 | switch (key) { | |
563 | case SR_CONF_DEVICE_OPTIONS: | |
564 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
565 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
566 | break; | |
567 | case SR_CONF_BUFFERSIZE: | |
568 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
569 | devc->profile->buffersizes, 2, sizeof(uint64_t)); | |
570 | break; | |
571 | case SR_CONF_COUPLING: | |
572 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
573 | break; | |
574 | case SR_CONF_VDIV: | |
575 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
576 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
577 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
578 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
579 | tuple = g_variant_new_tuple(rational, 2); | |
580 | g_variant_builder_add_value(&gvb, tuple); | |
581 | } | |
582 | *data = g_variant_builder_end(&gvb); | |
583 | break; | |
584 | case SR_CONF_FILTER: | |
585 | *data = g_variant_new_strv(filter_targets, | |
586 | ARRAY_SIZE(filter_targets)); | |
587 | break; | |
588 | case SR_CONF_TIMEBASE: | |
589 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
590 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
591 | rational[0] = g_variant_new_uint64(timebases[i][0]); | |
592 | rational[1] = g_variant_new_uint64(timebases[i][1]); | |
593 | tuple = g_variant_new_tuple(rational, 2); | |
594 | g_variant_builder_add_value(&gvb, tuple); | |
595 | } | |
596 | *data = g_variant_builder_end(&gvb); | |
597 | break; | |
598 | case SR_CONF_TRIGGER_SOURCE: | |
599 | *data = g_variant_new_strv(trigger_sources, | |
600 | ARRAY_SIZE(trigger_sources)); | |
601 | break; | |
602 | default: | |
603 | return SR_ERR_NA; | |
604 | } | |
605 | ||
606 | return SR_OK; | |
607 | } | |
608 | ||
609 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
610 | int num_samples) | |
611 | { | |
612 | struct sr_datafeed_packet packet; | |
613 | struct sr_datafeed_analog analog; | |
614 | struct dev_context *devc; | |
615 | float ch1, ch2, range; | |
616 | int num_probes, data_offset, i; | |
617 | ||
618 | devc = sdi->priv; | |
619 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
620 | packet.type = SR_DF_ANALOG; | |
621 | packet.payload = &analog; | |
622 | /* TODO: support for 5xxx series 9-bit samples */ | |
623 | analog.probes = devc->enabled_probes; | |
624 | analog.num_samples = num_samples; | |
625 | analog.mq = SR_MQ_VOLTAGE; | |
626 | analog.unit = SR_UNIT_VOLT; | |
627 | /* TODO: Check malloc return value. */ | |
628 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); | |
629 | data_offset = 0; | |
630 | for (i = 0; i < analog.num_samples; i++) { | |
631 | /* | |
632 | * The device always sends data for both channels. If a channel | |
633 | * is disabled, it contains a copy of the enabled channel's | |
634 | * data. However, we only send the requested channels to | |
635 | * the bus. | |
636 | * | |
637 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
638 | * DSO-5200*), where the value is a point in the range | |
639 | * represented by the vdiv setting. There are 8 vertical divs, | |
640 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
641 | * and 255 = +2V. | |
642 | */ | |
643 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
644 | if (devc->ch1_enabled) { | |
645 | range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8; | |
646 | ch1 = range / 255 * *(buf + i * 2 + 1); | |
647 | /* Value is centered around 0V. */ | |
648 | ch1 -= range / 2; | |
649 | analog.data[data_offset++] = ch1; | |
650 | } | |
651 | if (devc->ch2_enabled) { | |
652 | range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8; | |
653 | ch2 = range / 255 * *(buf + i * 2); | |
654 | ch2 -= range / 2; | |
655 | analog.data[data_offset++] = ch2; | |
656 | } | |
657 | } | |
658 | sr_session_send(devc->cb_data, &packet); | |
659 | } | |
660 | ||
661 | /* | |
662 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
663 | * Only channel data comes in asynchronously, and all transfers for this are | |
664 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
665 | * the libsigrok session bus. | |
666 | */ | |
667 | static void receive_transfer(struct libusb_transfer *transfer) | |
668 | { | |
669 | struct sr_datafeed_packet packet; | |
670 | struct sr_dev_inst *sdi; | |
671 | struct dev_context *devc; | |
672 | int num_samples, pre; | |
673 | ||
674 | sdi = transfer->user_data; | |
675 | devc = sdi->priv; | |
676 | sr_spew("receive_transfer(): status %d received %d bytes.", | |
677 | transfer->status, transfer->actual_length); | |
678 | ||
679 | if (transfer->actual_length == 0) | |
680 | /* Nothing to send to the bus. */ | |
681 | return; | |
682 | ||
683 | num_samples = transfer->actual_length / 2; | |
684 | ||
685 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
686 | devc->samp_received + num_samples, devc->framesize); | |
687 | ||
688 | /* | |
689 | * The device always sends a full frame, but the beginning of the frame | |
690 | * doesn't represent the trigger point. The offset at which the trigger | |
691 | * happened came in with the capture state, so we need to start sending | |
692 | * from there up the session bus. The samples in the frame buffer | |
693 | * before that trigger point came after the end of the device's frame | |
694 | * buffer was reached, and it wrapped around to overwrite up until the | |
695 | * trigger point. | |
696 | */ | |
697 | if (devc->samp_received < devc->trigger_offset) { | |
698 | /* Trigger point not yet reached. */ | |
699 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
700 | /* The entire chunk is before the trigger point. */ | |
701 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
702 | transfer->buffer, num_samples * 2); | |
703 | devc->samp_buffered += num_samples; | |
704 | } else { | |
705 | /* | |
706 | * This chunk hits or overruns the trigger point. | |
707 | * Store the part before the trigger fired, and | |
708 | * send the rest up to the session bus. | |
709 | */ | |
710 | pre = devc->trigger_offset - devc->samp_received; | |
711 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
712 | transfer->buffer, pre * 2); | |
713 | devc->samp_buffered += pre; | |
714 | ||
715 | /* The rest of this chunk starts with the trigger point. */ | |
716 | sr_dbg("Reached trigger point, %d samples buffered.", | |
717 | devc->samp_buffered); | |
718 | ||
719 | /* Avoid the corner case where the chunk ended at | |
720 | * exactly the trigger point. */ | |
721 | if (num_samples > pre) | |
722 | send_chunk(sdi, transfer->buffer + pre * 2, | |
723 | num_samples - pre); | |
724 | } | |
725 | } else { | |
726 | /* Already past the trigger point, just send it all out. */ | |
727 | send_chunk(sdi, transfer->buffer, | |
728 | num_samples); | |
729 | } | |
730 | ||
731 | devc->samp_received += num_samples; | |
732 | ||
733 | /* Everything in this transfer was either copied to the buffer or | |
734 | * sent to the session bus. */ | |
735 | g_free(transfer->buffer); | |
736 | libusb_free_transfer(transfer); | |
737 | ||
738 | if (devc->samp_received >= devc->framesize) { | |
739 | /* That was the last chunk in this frame. Send the buffered | |
740 | * pre-trigger samples out now, in one big chunk. */ | |
741 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
742 | devc->samp_buffered); | |
743 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
744 | ||
745 | /* Mark the end of this frame. */ | |
746 | packet.type = SR_DF_FRAME_END; | |
747 | sr_session_send(devc->cb_data, &packet); | |
748 | ||
749 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
750 | /* Terminate session */ | |
751 | devc->dev_state = STOPPING; | |
752 | } else { | |
753 | devc->dev_state = NEW_CAPTURE; | |
754 | } | |
755 | } | |
756 | } | |
757 | ||
758 | static int handle_event(int fd, int revents, void *cb_data) | |
759 | { | |
760 | const struct sr_dev_inst *sdi; | |
761 | struct sr_datafeed_packet packet; | |
762 | struct timeval tv; | |
763 | struct dev_context *devc; | |
764 | struct drv_context *drvc = di->priv; | |
765 | const struct libusb_pollfd **lupfd; | |
766 | int num_probes, i; | |
767 | uint32_t trigger_offset; | |
768 | uint8_t capturestate; | |
769 | ||
770 | (void)fd; | |
771 | (void)revents; | |
772 | ||
773 | sdi = cb_data; | |
774 | devc = sdi->priv; | |
775 | if (devc->dev_state == STOPPING) { | |
776 | /* We've been told to wind up the acquisition. */ | |
777 | sr_dbg("Stopping acquisition."); | |
778 | /* | |
779 | * TODO: Doesn't really cancel pending transfers so they might | |
780 | * come in after SR_DF_END is sent. | |
781 | */ | |
782 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
783 | for (i = 0; lupfd[i]; i++) | |
784 | sr_source_remove(lupfd[i]->fd); | |
785 | free(lupfd); | |
786 | ||
787 | packet.type = SR_DF_END; | |
788 | sr_session_send(sdi, &packet); | |
789 | ||
790 | devc->dev_state = IDLE; | |
791 | ||
792 | return TRUE; | |
793 | } | |
794 | ||
795 | /* Always handle pending libusb events. */ | |
796 | tv.tv_sec = tv.tv_usec = 0; | |
797 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
798 | ||
799 | /* TODO: ugh */ | |
800 | if (devc->dev_state == NEW_CAPTURE) { | |
801 | if (dso_capture_start(sdi) != SR_OK) | |
802 | return TRUE; | |
803 | if (dso_enable_trigger(sdi) != SR_OK) | |
804 | return TRUE; | |
805 | // if (dso_force_trigger(sdi) != SR_OK) | |
806 | // return TRUE; | |
807 | sr_dbg("Successfully requested next chunk."); | |
808 | devc->dev_state = CAPTURE; | |
809 | return TRUE; | |
810 | } | |
811 | if (devc->dev_state != CAPTURE) | |
812 | return TRUE; | |
813 | ||
814 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
815 | return TRUE; | |
816 | ||
817 | sr_dbg("Capturestate %d.", capturestate); | |
818 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
819 | switch (capturestate) { | |
820 | case CAPTURE_EMPTY: | |
821 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
822 | devc->capture_empty_count = 0; | |
823 | if (dso_capture_start(sdi) != SR_OK) | |
824 | break; | |
825 | if (dso_enable_trigger(sdi) != SR_OK) | |
826 | break; | |
827 | // if (dso_force_trigger(sdi) != SR_OK) | |
828 | // break; | |
829 | sr_dbg("Successfully requested next chunk."); | |
830 | } | |
831 | break; | |
832 | case CAPTURE_FILLING: | |
833 | /* No data yet. */ | |
834 | break; | |
835 | case CAPTURE_READY_8BIT: | |
836 | /* Remember where in the captured frame the trigger is. */ | |
837 | devc->trigger_offset = trigger_offset; | |
838 | ||
839 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
840 | /* TODO: Check malloc return value. */ | |
841 | devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); | |
842 | devc->samp_buffered = devc->samp_received = 0; | |
843 | ||
844 | /* Tell the scope to send us the first frame. */ | |
845 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
846 | break; | |
847 | ||
848 | /* | |
849 | * Don't hit the state machine again until we're done fetching | |
850 | * the data we just told the scope to send. | |
851 | */ | |
852 | devc->dev_state = FETCH_DATA; | |
853 | ||
854 | /* Tell the frontend a new frame is on the way. */ | |
855 | packet.type = SR_DF_FRAME_BEGIN; | |
856 | sr_session_send(sdi, &packet); | |
857 | break; | |
858 | case CAPTURE_READY_9BIT: | |
859 | /* TODO */ | |
860 | sr_err("Not yet supported."); | |
861 | break; | |
862 | case CAPTURE_TIMEOUT: | |
863 | /* Doesn't matter, we'll try again next time. */ | |
864 | break; | |
865 | default: | |
866 | sr_dbg("Unknown capture state: %d.", capturestate); | |
867 | break; | |
868 | } | |
869 | ||
870 | return TRUE; | |
871 | } | |
872 | ||
873 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
874 | void *cb_data) | |
875 | { | |
876 | const struct libusb_pollfd **lupfd; | |
877 | struct dev_context *devc; | |
878 | struct drv_context *drvc = di->priv; | |
879 | int i; | |
880 | ||
881 | if (sdi->status != SR_ST_ACTIVE) | |
882 | return SR_ERR; | |
883 | ||
884 | devc = sdi->priv; | |
885 | devc->cb_data = cb_data; | |
886 | ||
887 | if (configure_probes(sdi) != SR_OK) { | |
888 | sr_err("Failed to configure probes."); | |
889 | return SR_ERR; | |
890 | } | |
891 | ||
892 | if (dso_init(sdi) != SR_OK) | |
893 | return SR_ERR; | |
894 | ||
895 | if (dso_capture_start(sdi) != SR_OK) | |
896 | return SR_ERR; | |
897 | ||
898 | devc->dev_state = CAPTURE; | |
899 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
900 | for (i = 0; lupfd[i]; i++) | |
901 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, | |
902 | handle_event, (void *)sdi); | |
903 | free(lupfd); | |
904 | ||
905 | /* Send header packet to the session bus. */ | |
906 | std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); | |
907 | ||
908 | return SR_OK; | |
909 | } | |
910 | ||
911 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
912 | { | |
913 | struct dev_context *devc; | |
914 | ||
915 | (void)cb_data; | |
916 | ||
917 | if (sdi->status != SR_ST_ACTIVE) | |
918 | return SR_ERR; | |
919 | ||
920 | devc = sdi->priv; | |
921 | devc->dev_state = STOPPING; | |
922 | ||
923 | return SR_OK; | |
924 | } | |
925 | ||
926 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { | |
927 | .name = "hantek-dso", | |
928 | .longname = "Hantek DSO", | |
929 | .api_version = 1, | |
930 | .init = hw_init, | |
931 | .cleanup = hw_cleanup, | |
932 | .scan = hw_scan, | |
933 | .dev_list = hw_dev_list, | |
934 | .dev_clear = clear_instances, | |
935 | .config_get = config_get, | |
936 | .config_set = config_set, | |
937 | .config_list = config_list, | |
938 | .dev_open = hw_dev_open, | |
939 | .dev_close = hw_dev_close, | |
940 | .dev_acquisition_start = hw_dev_acquisition_start, | |
941 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
942 | .priv = NULL, | |
943 | }; |