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1 | /* | |
2 | * This file is part of the libsigrok 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 scanopts[] = { | |
44 | SR_CONF_CONN, | |
45 | }; | |
46 | ||
47 | static const int32_t devopts[] = { | |
48 | SR_CONF_OSCILLOSCOPE, | |
49 | SR_CONF_LIMIT_FRAMES, | |
50 | SR_CONF_CONTINUOUS, | |
51 | SR_CONF_TIMEBASE, | |
52 | SR_CONF_BUFFERSIZE, | |
53 | SR_CONF_TRIGGER_SOURCE, | |
54 | SR_CONF_TRIGGER_SLOPE, | |
55 | SR_CONF_HORIZ_TRIGGERPOS, | |
56 | SR_CONF_FILTER, | |
57 | SR_CONF_VDIV, | |
58 | SR_CONF_COUPLING, | |
59 | SR_CONF_NUM_TIMEBASE, | |
60 | SR_CONF_NUM_VDIV, | |
61 | }; | |
62 | ||
63 | static const char *probe_names[] = { | |
64 | "CH1", "CH2", | |
65 | NULL, | |
66 | }; | |
67 | ||
68 | static const uint64_t buffersizes_32k[] = { | |
69 | 10240, 32768, | |
70 | }; | |
71 | static const uint64_t buffersizes_512k[] = { | |
72 | 10240, 524288, | |
73 | }; | |
74 | static const uint64_t buffersizes_14k[] = { | |
75 | 10240, 14336, | |
76 | }; | |
77 | ||
78 | static const struct dso_profile dev_profiles[] = { | |
79 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
80 | "Hantek", "DSO-2090", | |
81 | buffersizes_32k, | |
82 | FIRMWARE_DIR "/hantek-dso-2090.fw" }, | |
83 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
84 | "Hantek", "DSO-2150", | |
85 | buffersizes_32k, | |
86 | FIRMWARE_DIR "/hantek-dso-2150.fw" }, | |
87 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
88 | "Hantek", "DSO-2250", | |
89 | buffersizes_512k, | |
90 | FIRMWARE_DIR "/hantek-dso-2250.fw" }, | |
91 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
92 | "Hantek", "DSO-5200", | |
93 | buffersizes_14k, | |
94 | FIRMWARE_DIR "/hantek-dso-5200.fw" }, | |
95 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
96 | "Hantek", "DSO-5200A", | |
97 | buffersizes_512k, | |
98 | FIRMWARE_DIR "/hantek-dso-5200A.fw" }, | |
99 | { 0, 0, 0, 0, 0, 0, 0, 0 }, | |
100 | }; | |
101 | ||
102 | static const uint64_t timebases[][2] = { | |
103 | /* microseconds */ | |
104 | { 10, 1000000 }, | |
105 | { 20, 1000000 }, | |
106 | { 40, 1000000 }, | |
107 | { 100, 1000000 }, | |
108 | { 200, 1000000 }, | |
109 | { 400, 1000000 }, | |
110 | /* milliseconds */ | |
111 | { 1, 1000 }, | |
112 | { 2, 1000 }, | |
113 | { 4, 1000 }, | |
114 | { 10, 1000 }, | |
115 | { 20, 1000 }, | |
116 | { 40, 1000 }, | |
117 | { 100, 1000 }, | |
118 | { 200, 1000 }, | |
119 | { 400, 1000 }, | |
120 | }; | |
121 | ||
122 | static const uint64_t vdivs[][2] = { | |
123 | /* millivolts */ | |
124 | { 10, 1000 }, | |
125 | { 20, 1000 }, | |
126 | { 50, 1000 }, | |
127 | { 100, 1000 }, | |
128 | { 200, 1000 }, | |
129 | { 500, 1000 }, | |
130 | /* volts */ | |
131 | { 1, 1 }, | |
132 | { 2, 1 }, | |
133 | { 5, 1 }, | |
134 | }; | |
135 | ||
136 | static const char *trigger_sources[] = { | |
137 | "CH1", | |
138 | "CH2", | |
139 | "EXT", | |
140 | /* TODO: forced */ | |
141 | }; | |
142 | ||
143 | static const char *filter_targets[] = { | |
144 | "CH1", | |
145 | "CH2", | |
146 | /* TODO: "TRIGGER", */ | |
147 | }; | |
148 | ||
149 | static const char *coupling[] = { | |
150 | "AC", | |
151 | "DC", | |
152 | "GND", | |
153 | }; | |
154 | ||
155 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info; | |
156 | static struct sr_dev_driver *di = &hantek_dso_driver_info; | |
157 | ||
158 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
159 | ||
160 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) | |
161 | { | |
162 | struct sr_dev_inst *sdi; | |
163 | struct sr_probe *probe; | |
164 | struct drv_context *drvc; | |
165 | struct dev_context *devc; | |
166 | int i; | |
167 | ||
168 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
169 | prof->vendor, prof->model, NULL); | |
170 | if (!sdi) | |
171 | return NULL; | |
172 | sdi->driver = di; | |
173 | ||
174 | /* | |
175 | * Add only the real probes -- EXT isn't a source of data, only | |
176 | * a trigger source internal to the device. | |
177 | */ | |
178 | for (i = 0; probe_names[i]; i++) { | |
179 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
180 | probe_names[i]))) | |
181 | return NULL; | |
182 | sdi->probes = g_slist_append(sdi->probes, probe); | |
183 | } | |
184 | ||
185 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
186 | sr_err("Device context malloc failed."); | |
187 | return NULL; | |
188 | } | |
189 | ||
190 | devc->profile = prof; | |
191 | devc->dev_state = IDLE; | |
192 | devc->timebase = DEFAULT_TIMEBASE; | |
193 | devc->ch1_enabled = TRUE; | |
194 | devc->ch2_enabled = TRUE; | |
195 | devc->voltage_ch1 = DEFAULT_VOLTAGE; | |
196 | devc->voltage_ch2 = DEFAULT_VOLTAGE; | |
197 | devc->coupling_ch1 = DEFAULT_COUPLING; | |
198 | devc->coupling_ch2 = DEFAULT_COUPLING; | |
199 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
200 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
201 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
202 | devc->framesize = DEFAULT_FRAMESIZE; | |
203 | devc->triggerslope = SLOPE_POSITIVE; | |
204 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
205 | devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; | |
206 | sdi->priv = devc; | |
207 | drvc = di->priv; | |
208 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
209 | ||
210 | return sdi; | |
211 | } | |
212 | ||
213 | static int configure_probes(const struct sr_dev_inst *sdi) | |
214 | { | |
215 | struct dev_context *devc; | |
216 | struct sr_probe *probe; | |
217 | const GSList *l; | |
218 | int p; | |
219 | ||
220 | devc = sdi->priv; | |
221 | ||
222 | g_slist_free(devc->enabled_probes); | |
223 | devc->ch1_enabled = devc->ch2_enabled = FALSE; | |
224 | for (l = sdi->probes, p = 0; l; l = l->next, p++) { | |
225 | probe = l->data; | |
226 | if (p == 0) | |
227 | devc->ch1_enabled = probe->enabled; | |
228 | else | |
229 | devc->ch2_enabled = probe->enabled; | |
230 | if (probe->enabled) | |
231 | devc->enabled_probes = g_slist_append(devc->enabled_probes, probe); | |
232 | } | |
233 | ||
234 | return SR_OK; | |
235 | } | |
236 | ||
237 | static void clear_dev_context(void *priv) | |
238 | { | |
239 | struct dev_context *devc; | |
240 | ||
241 | devc = priv; | |
242 | g_free(devc->triggersource); | |
243 | g_slist_free(devc->enabled_probes); | |
244 | ||
245 | } | |
246 | ||
247 | static int clear_instances(void) | |
248 | { | |
249 | return std_dev_clear(di, clear_dev_context); | |
250 | } | |
251 | ||
252 | static int hw_init(struct sr_context *sr_ctx) | |
253 | { | |
254 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
255 | } | |
256 | ||
257 | static GSList *hw_scan(GSList *options) | |
258 | { | |
259 | struct sr_dev_inst *sdi; | |
260 | const struct dso_profile *prof; | |
261 | struct drv_context *drvc; | |
262 | struct dev_context *devc; | |
263 | GSList *devices; | |
264 | struct libusb_device_descriptor des; | |
265 | libusb_device **devlist; | |
266 | int devcnt, ret, i, j; | |
267 | ||
268 | (void)options; | |
269 | ||
270 | drvc = di->priv; | |
271 | drvc->instances = NULL; | |
272 | ||
273 | devcnt = 0; | |
274 | devices = 0; | |
275 | ||
276 | clear_instances(); | |
277 | ||
278 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
279 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
280 | for (i = 0; devlist[i]; i++) { | |
281 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
282 | sr_err("Failed to get device descriptor: %s.", | |
283 | libusb_error_name(ret)); | |
284 | continue; | |
285 | } | |
286 | ||
287 | prof = NULL; | |
288 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
289 | if (des.idVendor == dev_profiles[j].orig_vid | |
290 | && des.idProduct == dev_profiles[j].orig_pid) { | |
291 | /* Device matches the pre-firmware profile. */ | |
292 | prof = &dev_profiles[j]; | |
293 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
294 | sdi = dso_dev_new(devcnt, prof); | |
295 | devices = g_slist_append(devices, sdi); | |
296 | devc = sdi->priv; | |
297 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
298 | prof->firmware) == SR_OK) | |
299 | /* Remember when the firmware on this device was updated */ | |
300 | devc->fw_updated = g_get_monotonic_time(); | |
301 | else | |
302 | sr_err("Firmware upload failed for " | |
303 | "device %d.", devcnt); | |
304 | /* Dummy USB address of 0xff will get overwritten later. */ | |
305 | sdi->conn = sr_usb_dev_inst_new( | |
306 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
307 | devcnt++; | |
308 | break; | |
309 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
310 | && des.idProduct == dev_profiles[j].fw_pid) { | |
311 | /* Device matches the post-firmware profile. */ | |
312 | prof = &dev_profiles[j]; | |
313 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
314 | sdi = dso_dev_new(devcnt, prof); | |
315 | sdi->status = SR_ST_INACTIVE; | |
316 | devices = g_slist_append(devices, sdi); | |
317 | devc = sdi->priv; | |
318 | sdi->inst_type = SR_INST_USB; | |
319 | sdi->conn = sr_usb_dev_inst_new( | |
320 | libusb_get_bus_number(devlist[i]), | |
321 | libusb_get_device_address(devlist[i]), NULL); | |
322 | devcnt++; | |
323 | break; | |
324 | } | |
325 | } | |
326 | if (!prof) | |
327 | /* not a supported VID/PID */ | |
328 | continue; | |
329 | } | |
330 | libusb_free_device_list(devlist, 1); | |
331 | ||
332 | return devices; | |
333 | } | |
334 | ||
335 | static GSList *hw_dev_list(void) | |
336 | { | |
337 | return ((struct drv_context *)(di->priv))->instances; | |
338 | } | |
339 | ||
340 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
341 | { | |
342 | struct dev_context *devc; | |
343 | struct sr_usb_dev_inst *usb; | |
344 | int64_t timediff_us, timediff_ms; | |
345 | int err; | |
346 | ||
347 | devc = sdi->priv; | |
348 | usb = sdi->conn; | |
349 | ||
350 | /* | |
351 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
352 | * for the FX2 to renumerate. | |
353 | */ | |
354 | err = SR_ERR; | |
355 | if (devc->fw_updated > 0) { | |
356 | sr_info("Waiting for device to reset."); | |
357 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
358 | g_usleep(300 * 1000); | |
359 | timediff_ms = 0; | |
360 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
361 | if ((err = dso_open(sdi)) == SR_OK) | |
362 | break; | |
363 | g_usleep(100 * 1000); | |
364 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
365 | timediff_ms = timediff_us / 1000; | |
366 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
367 | } | |
368 | sr_info("Device came back after %d ms.", timediff_ms); | |
369 | } else { | |
370 | err = dso_open(sdi); | |
371 | } | |
372 | ||
373 | if (err != SR_OK) { | |
374 | sr_err("Unable to open device."); | |
375 | return SR_ERR; | |
376 | } | |
377 | ||
378 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
379 | if (err != 0) { | |
380 | sr_err("Unable to claim interface: %s.", | |
381 | libusb_error_name(err)); | |
382 | return SR_ERR; | |
383 | } | |
384 | ||
385 | return SR_OK; | |
386 | } | |
387 | ||
388 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
389 | { | |
390 | dso_close(sdi); | |
391 | ||
392 | return SR_OK; | |
393 | } | |
394 | ||
395 | static int hw_cleanup(void) | |
396 | { | |
397 | struct drv_context *drvc; | |
398 | ||
399 | if (!(drvc = di->priv)) | |
400 | return SR_OK; | |
401 | ||
402 | clear_instances(); | |
403 | ||
404 | return SR_OK; | |
405 | } | |
406 | ||
407 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) | |
408 | { | |
409 | struct sr_usb_dev_inst *usb; | |
410 | char str[128]; | |
411 | ||
412 | switch (id) { | |
413 | case SR_CONF_CONN: | |
414 | if (!sdi || !sdi->conn) | |
415 | return SR_ERR_ARG; | |
416 | usb = sdi->conn; | |
417 | if (usb->address == 255) | |
418 | /* Device still needs to re-enumerate after firmware | |
419 | * upload, so we don't know its (future) address. */ | |
420 | return SR_ERR; | |
421 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
422 | *data = g_variant_new_string(str); | |
423 | break; | |
424 | case SR_CONF_NUM_TIMEBASE: | |
425 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
426 | break; | |
427 | case SR_CONF_NUM_VDIV: | |
428 | *data = g_variant_new_int32(NUM_VDIV); | |
429 | break; | |
430 | default: | |
431 | return SR_ERR_NA; | |
432 | } | |
433 | ||
434 | return SR_OK; | |
435 | } | |
436 | ||
437 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
438 | { | |
439 | struct dev_context *devc; | |
440 | double tmp_double; | |
441 | uint64_t tmp_u64, p, q; | |
442 | int tmp_int, ret; | |
443 | unsigned int i; | |
444 | const char *tmp_str; | |
445 | char **targets; | |
446 | ||
447 | if (sdi->status != SR_ST_ACTIVE) | |
448 | return SR_ERR; | |
449 | ||
450 | ret = SR_OK; | |
451 | devc = sdi->priv; | |
452 | switch (id) { | |
453 | case SR_CONF_LIMIT_FRAMES: | |
454 | devc->limit_frames = g_variant_get_uint64(data); | |
455 | break; | |
456 | case SR_CONF_TRIGGER_SLOPE: | |
457 | tmp_u64 = g_variant_get_uint64(data); | |
458 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) | |
459 | ret = SR_ERR_ARG; | |
460 | devc->triggerslope = tmp_u64; | |
461 | break; | |
462 | case SR_CONF_HORIZ_TRIGGERPOS: | |
463 | tmp_double = g_variant_get_double(data); | |
464 | if (tmp_double < 0.0 || tmp_double > 1.0) { | |
465 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
466 | ret = SR_ERR_ARG; | |
467 | } else | |
468 | devc->triggerposition = tmp_double; | |
469 | break; | |
470 | case SR_CONF_BUFFERSIZE: | |
471 | tmp_u64 = g_variant_get_uint64(data); | |
472 | for (i = 0; i < 2; i++) { | |
473 | if (devc->profile->buffersizes[i] == tmp_u64) { | |
474 | devc->framesize = tmp_u64; | |
475 | break; | |
476 | } | |
477 | } | |
478 | if (i == 2) | |
479 | ret = SR_ERR_ARG; | |
480 | break; | |
481 | case SR_CONF_TIMEBASE: | |
482 | g_variant_get(data, "(tt)", &p, &q); | |
483 | tmp_int = -1; | |
484 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
485 | if (timebases[i][0] == p && timebases[i][1] == q) { | |
486 | tmp_int = i; | |
487 | break; | |
488 | } | |
489 | } | |
490 | if (tmp_int >= 0) | |
491 | devc->timebase = tmp_int; | |
492 | else | |
493 | ret = SR_ERR_ARG; | |
494 | break; | |
495 | case SR_CONF_TRIGGER_SOURCE: | |
496 | tmp_str = g_variant_get_string(data, NULL); | |
497 | for (i = 0; trigger_sources[i]; i++) { | |
498 | if (!strcmp(tmp_str, trigger_sources[i])) { | |
499 | devc->triggersource = g_strdup(tmp_str); | |
500 | break; | |
501 | } | |
502 | } | |
503 | if (trigger_sources[i] == 0) | |
504 | ret = SR_ERR_ARG; | |
505 | break; | |
506 | case SR_CONF_FILTER: | |
507 | tmp_str = g_variant_get_string(data, NULL); | |
508 | devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; | |
509 | targets = g_strsplit(tmp_str, ",", 0); | |
510 | for (i = 0; targets[i]; i++) { | |
511 | if (targets[i] == '\0') | |
512 | /* Empty filter string can be used to clear them all. */ | |
513 | ; | |
514 | else if (!strcmp(targets[i], "CH1")) | |
515 | devc->filter_ch1 = TRUE; | |
516 | else if (!strcmp(targets[i], "CH2")) | |
517 | devc->filter_ch2 = TRUE; | |
518 | else if (!strcmp(targets[i], "TRIGGER")) | |
519 | devc->filter_trigger = TRUE; | |
520 | else { | |
521 | sr_err("Invalid filter target %s.", targets[i]); | |
522 | ret = SR_ERR_ARG; | |
523 | } | |
524 | } | |
525 | g_strfreev(targets); | |
526 | break; | |
527 | case SR_CONF_VDIV: | |
528 | /* TODO: Not supporting vdiv per channel yet. */ | |
529 | g_variant_get(data, "(tt)", &p, &q); | |
530 | tmp_int = -1; | |
531 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
532 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
533 | tmp_int = i; | |
534 | break; | |
535 | } | |
536 | } | |
537 | if (tmp_int >= 0) { | |
538 | devc->voltage_ch1 = tmp_int; | |
539 | devc->voltage_ch2 = tmp_int; | |
540 | } else | |
541 | ret = SR_ERR_ARG; | |
542 | break; | |
543 | case SR_CONF_COUPLING: | |
544 | tmp_str = g_variant_get_string(data, NULL); | |
545 | /* TODO: Not supporting coupling per channel yet. */ | |
546 | for (i = 0; coupling[i]; i++) { | |
547 | if (!strcmp(tmp_str, coupling[i])) { | |
548 | devc->coupling_ch1 = i; | |
549 | devc->coupling_ch2 = i; | |
550 | break; | |
551 | } | |
552 | } | |
553 | if (coupling[i] == 0) | |
554 | ret = SR_ERR_ARG; | |
555 | break; | |
556 | default: | |
557 | ret = SR_ERR_NA; | |
558 | break; | |
559 | } | |
560 | ||
561 | return ret; | |
562 | } | |
563 | ||
564 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
565 | { | |
566 | struct dev_context *devc; | |
567 | GVariant *tuple, *rational[2]; | |
568 | GVariantBuilder gvb; | |
569 | unsigned int i; | |
570 | ||
571 | (void)sdi; | |
572 | ||
573 | if (!sdi) | |
574 | return SR_ERR_ARG; | |
575 | ||
576 | devc = sdi->priv; | |
577 | switch (key) { | |
578 | case SR_CONF_SCAN_OPTIONS: | |
579 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
580 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); | |
581 | break; | |
582 | case SR_CONF_DEVICE_OPTIONS: | |
583 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
584 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
585 | break; | |
586 | case SR_CONF_BUFFERSIZE: | |
587 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
588 | devc->profile->buffersizes, 2, sizeof(uint64_t)); | |
589 | break; | |
590 | case SR_CONF_COUPLING: | |
591 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
592 | break; | |
593 | case SR_CONF_VDIV: | |
594 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
595 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
596 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
597 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
598 | tuple = g_variant_new_tuple(rational, 2); | |
599 | g_variant_builder_add_value(&gvb, tuple); | |
600 | } | |
601 | *data = g_variant_builder_end(&gvb); | |
602 | break; | |
603 | case SR_CONF_FILTER: | |
604 | *data = g_variant_new_strv(filter_targets, | |
605 | ARRAY_SIZE(filter_targets)); | |
606 | break; | |
607 | case SR_CONF_TIMEBASE: | |
608 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
609 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
610 | rational[0] = g_variant_new_uint64(timebases[i][0]); | |
611 | rational[1] = g_variant_new_uint64(timebases[i][1]); | |
612 | tuple = g_variant_new_tuple(rational, 2); | |
613 | g_variant_builder_add_value(&gvb, tuple); | |
614 | } | |
615 | *data = g_variant_builder_end(&gvb); | |
616 | break; | |
617 | case SR_CONF_TRIGGER_SOURCE: | |
618 | *data = g_variant_new_strv(trigger_sources, | |
619 | ARRAY_SIZE(trigger_sources)); | |
620 | break; | |
621 | default: | |
622 | return SR_ERR_NA; | |
623 | } | |
624 | ||
625 | return SR_OK; | |
626 | } | |
627 | ||
628 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
629 | int num_samples) | |
630 | { | |
631 | struct sr_datafeed_packet packet; | |
632 | struct sr_datafeed_analog analog; | |
633 | struct dev_context *devc; | |
634 | float ch1, ch2, range; | |
635 | int num_probes, data_offset, i; | |
636 | ||
637 | devc = sdi->priv; | |
638 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
639 | packet.type = SR_DF_ANALOG; | |
640 | packet.payload = &analog; | |
641 | /* TODO: support for 5xxx series 9-bit samples */ | |
642 | analog.probes = devc->enabled_probes; | |
643 | analog.num_samples = num_samples; | |
644 | analog.mq = SR_MQ_VOLTAGE; | |
645 | analog.unit = SR_UNIT_VOLT; | |
646 | /* TODO: Check malloc return value. */ | |
647 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); | |
648 | data_offset = 0; | |
649 | for (i = 0; i < analog.num_samples; i++) { | |
650 | /* | |
651 | * The device always sends data for both channels. If a channel | |
652 | * is disabled, it contains a copy of the enabled channel's | |
653 | * data. However, we only send the requested channels to | |
654 | * the bus. | |
655 | * | |
656 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
657 | * DSO-5200*), where the value is a point in the range | |
658 | * represented by the vdiv setting. There are 8 vertical divs, | |
659 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
660 | * and 255 = +2V. | |
661 | */ | |
662 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
663 | if (devc->ch1_enabled) { | |
664 | range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8; | |
665 | ch1 = range / 255 * *(buf + i * 2 + 1); | |
666 | /* Value is centered around 0V. */ | |
667 | ch1 -= range / 2; | |
668 | analog.data[data_offset++] = ch1; | |
669 | } | |
670 | if (devc->ch2_enabled) { | |
671 | range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8; | |
672 | ch2 = range / 255 * *(buf + i * 2); | |
673 | ch2 -= range / 2; | |
674 | analog.data[data_offset++] = ch2; | |
675 | } | |
676 | } | |
677 | sr_session_send(devc->cb_data, &packet); | |
678 | } | |
679 | ||
680 | /* | |
681 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
682 | * Only channel data comes in asynchronously, and all transfers for this are | |
683 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
684 | * the libsigrok session bus. | |
685 | */ | |
686 | static void receive_transfer(struct libusb_transfer *transfer) | |
687 | { | |
688 | struct sr_datafeed_packet packet; | |
689 | struct sr_dev_inst *sdi; | |
690 | struct dev_context *devc; | |
691 | int num_samples, pre; | |
692 | ||
693 | sdi = transfer->user_data; | |
694 | devc = sdi->priv; | |
695 | sr_spew("receive_transfer(): status %d received %d bytes.", | |
696 | transfer->status, transfer->actual_length); | |
697 | ||
698 | if (transfer->actual_length == 0) | |
699 | /* Nothing to send to the bus. */ | |
700 | return; | |
701 | ||
702 | num_samples = transfer->actual_length / 2; | |
703 | ||
704 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
705 | devc->samp_received + num_samples, devc->framesize); | |
706 | ||
707 | /* | |
708 | * The device always sends a full frame, but the beginning of the frame | |
709 | * doesn't represent the trigger point. The offset at which the trigger | |
710 | * happened came in with the capture state, so we need to start sending | |
711 | * from there up the session bus. The samples in the frame buffer | |
712 | * before that trigger point came after the end of the device's frame | |
713 | * buffer was reached, and it wrapped around to overwrite up until the | |
714 | * trigger point. | |
715 | */ | |
716 | if (devc->samp_received < devc->trigger_offset) { | |
717 | /* Trigger point not yet reached. */ | |
718 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
719 | /* The entire chunk is before the trigger point. */ | |
720 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
721 | transfer->buffer, num_samples * 2); | |
722 | devc->samp_buffered += num_samples; | |
723 | } else { | |
724 | /* | |
725 | * This chunk hits or overruns the trigger point. | |
726 | * Store the part before the trigger fired, and | |
727 | * send the rest up to the session bus. | |
728 | */ | |
729 | pre = devc->trigger_offset - devc->samp_received; | |
730 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
731 | transfer->buffer, pre * 2); | |
732 | devc->samp_buffered += pre; | |
733 | ||
734 | /* The rest of this chunk starts with the trigger point. */ | |
735 | sr_dbg("Reached trigger point, %d samples buffered.", | |
736 | devc->samp_buffered); | |
737 | ||
738 | /* Avoid the corner case where the chunk ended at | |
739 | * exactly the trigger point. */ | |
740 | if (num_samples > pre) | |
741 | send_chunk(sdi, transfer->buffer + pre * 2, | |
742 | num_samples - pre); | |
743 | } | |
744 | } else { | |
745 | /* Already past the trigger point, just send it all out. */ | |
746 | send_chunk(sdi, transfer->buffer, | |
747 | num_samples); | |
748 | } | |
749 | ||
750 | devc->samp_received += num_samples; | |
751 | ||
752 | /* Everything in this transfer was either copied to the buffer or | |
753 | * sent to the session bus. */ | |
754 | g_free(transfer->buffer); | |
755 | libusb_free_transfer(transfer); | |
756 | ||
757 | if (devc->samp_received >= devc->framesize) { | |
758 | /* That was the last chunk in this frame. Send the buffered | |
759 | * pre-trigger samples out now, in one big chunk. */ | |
760 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
761 | devc->samp_buffered); | |
762 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
763 | ||
764 | /* Mark the end of this frame. */ | |
765 | packet.type = SR_DF_FRAME_END; | |
766 | sr_session_send(devc->cb_data, &packet); | |
767 | ||
768 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
769 | /* Terminate session */ | |
770 | devc->dev_state = STOPPING; | |
771 | } else { | |
772 | devc->dev_state = NEW_CAPTURE; | |
773 | } | |
774 | } | |
775 | } | |
776 | ||
777 | static int handle_event(int fd, int revents, void *cb_data) | |
778 | { | |
779 | const struct sr_dev_inst *sdi; | |
780 | struct sr_datafeed_packet packet; | |
781 | struct timeval tv; | |
782 | struct dev_context *devc; | |
783 | struct drv_context *drvc = di->priv; | |
784 | const struct libusb_pollfd **lupfd; | |
785 | int num_probes, i; | |
786 | uint32_t trigger_offset; | |
787 | uint8_t capturestate; | |
788 | ||
789 | (void)fd; | |
790 | (void)revents; | |
791 | ||
792 | sdi = cb_data; | |
793 | devc = sdi->priv; | |
794 | if (devc->dev_state == STOPPING) { | |
795 | /* We've been told to wind up the acquisition. */ | |
796 | sr_dbg("Stopping acquisition."); | |
797 | /* | |
798 | * TODO: Doesn't really cancel pending transfers so they might | |
799 | * come in after SR_DF_END is sent. | |
800 | */ | |
801 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
802 | for (i = 0; lupfd[i]; i++) | |
803 | sr_source_remove(lupfd[i]->fd); | |
804 | free(lupfd); | |
805 | ||
806 | packet.type = SR_DF_END; | |
807 | sr_session_send(sdi, &packet); | |
808 | ||
809 | devc->dev_state = IDLE; | |
810 | ||
811 | return TRUE; | |
812 | } | |
813 | ||
814 | /* Always handle pending libusb events. */ | |
815 | tv.tv_sec = tv.tv_usec = 0; | |
816 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
817 | ||
818 | /* TODO: ugh */ | |
819 | if (devc->dev_state == NEW_CAPTURE) { | |
820 | if (dso_capture_start(sdi) != SR_OK) | |
821 | return TRUE; | |
822 | if (dso_enable_trigger(sdi) != SR_OK) | |
823 | return TRUE; | |
824 | // if (dso_force_trigger(sdi) != SR_OK) | |
825 | // return TRUE; | |
826 | sr_dbg("Successfully requested next chunk."); | |
827 | devc->dev_state = CAPTURE; | |
828 | return TRUE; | |
829 | } | |
830 | if (devc->dev_state != CAPTURE) | |
831 | return TRUE; | |
832 | ||
833 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
834 | return TRUE; | |
835 | ||
836 | sr_dbg("Capturestate %d.", capturestate); | |
837 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
838 | switch (capturestate) { | |
839 | case CAPTURE_EMPTY: | |
840 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
841 | devc->capture_empty_count = 0; | |
842 | if (dso_capture_start(sdi) != SR_OK) | |
843 | break; | |
844 | if (dso_enable_trigger(sdi) != SR_OK) | |
845 | break; | |
846 | // if (dso_force_trigger(sdi) != SR_OK) | |
847 | // break; | |
848 | sr_dbg("Successfully requested next chunk."); | |
849 | } | |
850 | break; | |
851 | case CAPTURE_FILLING: | |
852 | /* No data yet. */ | |
853 | break; | |
854 | case CAPTURE_READY_8BIT: | |
855 | /* Remember where in the captured frame the trigger is. */ | |
856 | devc->trigger_offset = trigger_offset; | |
857 | ||
858 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
859 | /* TODO: Check malloc return value. */ | |
860 | devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); | |
861 | devc->samp_buffered = devc->samp_received = 0; | |
862 | ||
863 | /* Tell the scope to send us the first frame. */ | |
864 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
865 | break; | |
866 | ||
867 | /* | |
868 | * Don't hit the state machine again until we're done fetching | |
869 | * the data we just told the scope to send. | |
870 | */ | |
871 | devc->dev_state = FETCH_DATA; | |
872 | ||
873 | /* Tell the frontend a new frame is on the way. */ | |
874 | packet.type = SR_DF_FRAME_BEGIN; | |
875 | sr_session_send(sdi, &packet); | |
876 | break; | |
877 | case CAPTURE_READY_9BIT: | |
878 | /* TODO */ | |
879 | sr_err("Not yet supported."); | |
880 | break; | |
881 | case CAPTURE_TIMEOUT: | |
882 | /* Doesn't matter, we'll try again next time. */ | |
883 | break; | |
884 | default: | |
885 | sr_dbg("Unknown capture state: %d.", capturestate); | |
886 | break; | |
887 | } | |
888 | ||
889 | return TRUE; | |
890 | } | |
891 | ||
892 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
893 | void *cb_data) | |
894 | { | |
895 | const struct libusb_pollfd **lupfd; | |
896 | struct dev_context *devc; | |
897 | struct drv_context *drvc = di->priv; | |
898 | int i; | |
899 | ||
900 | if (sdi->status != SR_ST_ACTIVE) | |
901 | return SR_ERR; | |
902 | ||
903 | devc = sdi->priv; | |
904 | devc->cb_data = cb_data; | |
905 | ||
906 | if (configure_probes(sdi) != SR_OK) { | |
907 | sr_err("Failed to configure probes."); | |
908 | return SR_ERR; | |
909 | } | |
910 | ||
911 | if (dso_init(sdi) != SR_OK) | |
912 | return SR_ERR; | |
913 | ||
914 | if (dso_capture_start(sdi) != SR_OK) | |
915 | return SR_ERR; | |
916 | ||
917 | devc->dev_state = CAPTURE; | |
918 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
919 | for (i = 0; lupfd[i]; i++) | |
920 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, | |
921 | handle_event, (void *)sdi); | |
922 | free(lupfd); | |
923 | ||
924 | /* Send header packet to the session bus. */ | |
925 | std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); | |
926 | ||
927 | return SR_OK; | |
928 | } | |
929 | ||
930 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
931 | { | |
932 | struct dev_context *devc; | |
933 | ||
934 | (void)cb_data; | |
935 | ||
936 | if (sdi->status != SR_ST_ACTIVE) | |
937 | return SR_ERR; | |
938 | ||
939 | devc = sdi->priv; | |
940 | devc->dev_state = STOPPING; | |
941 | ||
942 | return SR_OK; | |
943 | } | |
944 | ||
945 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { | |
946 | .name = "hantek-dso", | |
947 | .longname = "Hantek DSO", | |
948 | .api_version = 1, | |
949 | .init = hw_init, | |
950 | .cleanup = hw_cleanup, | |
951 | .scan = hw_scan, | |
952 | .dev_list = hw_dev_list, | |
953 | .dev_clear = clear_instances, | |
954 | .config_get = config_get, | |
955 | .config_set = config_set, | |
956 | .config_list = config_list, | |
957 | .dev_open = hw_dev_open, | |
958 | .dev_close = hw_dev_close, | |
959 | .dev_acquisition_start = hw_dev_acquisition_start, | |
960 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
961 | .priv = NULL, | |
962 | }; |