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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 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 init(struct sr_context *sr_ctx) | |
253 | { | |
254 | return std_hw_init(sr_ctx, di, LOG_PREFIX); | |
255 | } | |
256 | ||
257 | static GSList *scan(GSList *options) | |
258 | { | |
259 | struct drv_context *drvc; | |
260 | struct dev_context *devc; | |
261 | struct sr_dev_inst *sdi; | |
262 | struct sr_usb_dev_inst *usb; | |
263 | struct sr_config *src; | |
264 | const struct dso_profile *prof; | |
265 | GSList *l, *devices, *conn_devices; | |
266 | struct libusb_device_descriptor des; | |
267 | libusb_device **devlist; | |
268 | int devcnt, ret, i, j; | |
269 | const char *conn; | |
270 | ||
271 | drvc = di->priv; | |
272 | ||
273 | devcnt = 0; | |
274 | devices = 0; | |
275 | ||
276 | conn = NULL; | |
277 | for (l = options; l; l = l->next) { | |
278 | src = l->data; | |
279 | if (src->key == SR_CONF_CONN) { | |
280 | conn = g_variant_get_string(src->data, NULL); | |
281 | break; | |
282 | } | |
283 | } | |
284 | if (conn) | |
285 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
286 | else | |
287 | conn_devices = NULL; | |
288 | ||
289 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
290 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
291 | for (i = 0; devlist[i]; i++) { | |
292 | if (conn) { | |
293 | usb = NULL; | |
294 | for (l = conn_devices; l; l = l->next) { | |
295 | usb = l->data; | |
296 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
297 | && usb->address == libusb_get_device_address(devlist[i])) | |
298 | break; | |
299 | } | |
300 | if (!l) | |
301 | /* This device matched none of the ones that | |
302 | * matched the conn specification. */ | |
303 | continue; | |
304 | } | |
305 | ||
306 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
307 | sr_err("Failed to get device descriptor: %s.", | |
308 | libusb_error_name(ret)); | |
309 | continue; | |
310 | } | |
311 | ||
312 | prof = NULL; | |
313 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
314 | if (des.idVendor == dev_profiles[j].orig_vid | |
315 | && des.idProduct == dev_profiles[j].orig_pid) { | |
316 | /* Device matches the pre-firmware profile. */ | |
317 | prof = &dev_profiles[j]; | |
318 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
319 | sdi = dso_dev_new(devcnt, prof); | |
320 | devices = g_slist_append(devices, sdi); | |
321 | devc = sdi->priv; | |
322 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
323 | prof->firmware) == SR_OK) | |
324 | /* Remember when the firmware on this device was updated */ | |
325 | devc->fw_updated = g_get_monotonic_time(); | |
326 | else | |
327 | sr_err("Firmware upload failed for " | |
328 | "device %d.", devcnt); | |
329 | /* Dummy USB address of 0xff will get overwritten later. */ | |
330 | sdi->conn = sr_usb_dev_inst_new( | |
331 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
332 | devcnt++; | |
333 | break; | |
334 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
335 | && des.idProduct == dev_profiles[j].fw_pid) { | |
336 | /* Device matches the post-firmware profile. */ | |
337 | prof = &dev_profiles[j]; | |
338 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
339 | sdi = dso_dev_new(devcnt, prof); | |
340 | sdi->status = SR_ST_INACTIVE; | |
341 | devices = g_slist_append(devices, sdi); | |
342 | devc = sdi->priv; | |
343 | sdi->inst_type = SR_INST_USB; | |
344 | sdi->conn = sr_usb_dev_inst_new( | |
345 | libusb_get_bus_number(devlist[i]), | |
346 | libusb_get_device_address(devlist[i]), NULL); | |
347 | devcnt++; | |
348 | break; | |
349 | } | |
350 | } | |
351 | if (!prof) | |
352 | /* not a supported VID/PID */ | |
353 | continue; | |
354 | } | |
355 | libusb_free_device_list(devlist, 1); | |
356 | ||
357 | return devices; | |
358 | } | |
359 | ||
360 | static GSList *dev_list(void) | |
361 | { | |
362 | return ((struct drv_context *)(di->priv))->instances; | |
363 | } | |
364 | ||
365 | static int dev_open(struct sr_dev_inst *sdi) | |
366 | { | |
367 | struct dev_context *devc; | |
368 | struct sr_usb_dev_inst *usb; | |
369 | int64_t timediff_us, timediff_ms; | |
370 | int err; | |
371 | ||
372 | devc = sdi->priv; | |
373 | usb = sdi->conn; | |
374 | ||
375 | /* | |
376 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
377 | * for the FX2 to renumerate. | |
378 | */ | |
379 | err = SR_ERR; | |
380 | if (devc->fw_updated > 0) { | |
381 | sr_info("Waiting for device to reset."); | |
382 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
383 | g_usleep(300 * 1000); | |
384 | timediff_ms = 0; | |
385 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
386 | if ((err = dso_open(sdi)) == SR_OK) | |
387 | break; | |
388 | g_usleep(100 * 1000); | |
389 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
390 | timediff_ms = timediff_us / 1000; | |
391 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
392 | } | |
393 | sr_info("Device came back after %d ms.", timediff_ms); | |
394 | } else { | |
395 | err = dso_open(sdi); | |
396 | } | |
397 | ||
398 | if (err != SR_OK) { | |
399 | sr_err("Unable to open device."); | |
400 | return SR_ERR; | |
401 | } | |
402 | ||
403 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
404 | if (err != 0) { | |
405 | sr_err("Unable to claim interface: %s.", | |
406 | libusb_error_name(err)); | |
407 | return SR_ERR; | |
408 | } | |
409 | ||
410 | return SR_OK; | |
411 | } | |
412 | ||
413 | static int dev_close(struct sr_dev_inst *sdi) | |
414 | { | |
415 | dso_close(sdi); | |
416 | ||
417 | return SR_OK; | |
418 | } | |
419 | ||
420 | static int cleanup(void) | |
421 | { | |
422 | struct drv_context *drvc; | |
423 | ||
424 | if (!(drvc = di->priv)) | |
425 | return SR_OK; | |
426 | ||
427 | clear_instances(); | |
428 | ||
429 | return SR_OK; | |
430 | } | |
431 | ||
432 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) | |
433 | { | |
434 | struct sr_usb_dev_inst *usb; | |
435 | char str[128]; | |
436 | ||
437 | switch (id) { | |
438 | case SR_CONF_CONN: | |
439 | if (!sdi || !sdi->conn) | |
440 | return SR_ERR_ARG; | |
441 | usb = sdi->conn; | |
442 | if (usb->address == 255) | |
443 | /* Device still needs to re-enumerate after firmware | |
444 | * upload, so we don't know its (future) address. */ | |
445 | return SR_ERR; | |
446 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
447 | *data = g_variant_new_string(str); | |
448 | break; | |
449 | case SR_CONF_NUM_TIMEBASE: | |
450 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
451 | break; | |
452 | case SR_CONF_NUM_VDIV: | |
453 | *data = g_variant_new_int32(NUM_VDIV); | |
454 | break; | |
455 | default: | |
456 | return SR_ERR_NA; | |
457 | } | |
458 | ||
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
463 | { | |
464 | struct dev_context *devc; | |
465 | double tmp_double; | |
466 | uint64_t tmp_u64, p, q; | |
467 | int tmp_int, ret; | |
468 | unsigned int i; | |
469 | const char *tmp_str; | |
470 | char **targets; | |
471 | ||
472 | if (sdi->status != SR_ST_ACTIVE) | |
473 | return SR_ERR_DEV_CLOSED; | |
474 | ||
475 | ret = SR_OK; | |
476 | devc = sdi->priv; | |
477 | switch (id) { | |
478 | case SR_CONF_LIMIT_FRAMES: | |
479 | devc->limit_frames = g_variant_get_uint64(data); | |
480 | break; | |
481 | case SR_CONF_TRIGGER_SLOPE: | |
482 | tmp_u64 = g_variant_get_uint64(data); | |
483 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) | |
484 | ret = SR_ERR_ARG; | |
485 | devc->triggerslope = tmp_u64; | |
486 | break; | |
487 | case SR_CONF_HORIZ_TRIGGERPOS: | |
488 | tmp_double = g_variant_get_double(data); | |
489 | if (tmp_double < 0.0 || tmp_double > 1.0) { | |
490 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
491 | ret = SR_ERR_ARG; | |
492 | } else | |
493 | devc->triggerposition = tmp_double; | |
494 | break; | |
495 | case SR_CONF_BUFFERSIZE: | |
496 | tmp_u64 = g_variant_get_uint64(data); | |
497 | for (i = 0; i < 2; i++) { | |
498 | if (devc->profile->buffersizes[i] == tmp_u64) { | |
499 | devc->framesize = tmp_u64; | |
500 | break; | |
501 | } | |
502 | } | |
503 | if (i == 2) | |
504 | ret = SR_ERR_ARG; | |
505 | break; | |
506 | case SR_CONF_TIMEBASE: | |
507 | g_variant_get(data, "(tt)", &p, &q); | |
508 | tmp_int = -1; | |
509 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
510 | if (timebases[i][0] == p && timebases[i][1] == q) { | |
511 | tmp_int = i; | |
512 | break; | |
513 | } | |
514 | } | |
515 | if (tmp_int >= 0) | |
516 | devc->timebase = tmp_int; | |
517 | else | |
518 | ret = SR_ERR_ARG; | |
519 | break; | |
520 | case SR_CONF_TRIGGER_SOURCE: | |
521 | tmp_str = g_variant_get_string(data, NULL); | |
522 | for (i = 0; trigger_sources[i]; i++) { | |
523 | if (!strcmp(tmp_str, trigger_sources[i])) { | |
524 | devc->triggersource = g_strdup(tmp_str); | |
525 | break; | |
526 | } | |
527 | } | |
528 | if (trigger_sources[i] == 0) | |
529 | ret = SR_ERR_ARG; | |
530 | break; | |
531 | case SR_CONF_FILTER: | |
532 | tmp_str = g_variant_get_string(data, NULL); | |
533 | devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; | |
534 | targets = g_strsplit(tmp_str, ",", 0); | |
535 | for (i = 0; targets[i]; i++) { | |
536 | if (targets[i] == '\0') | |
537 | /* Empty filter string can be used to clear them all. */ | |
538 | ; | |
539 | else if (!strcmp(targets[i], "CH1")) | |
540 | devc->filter_ch1 = TRUE; | |
541 | else if (!strcmp(targets[i], "CH2")) | |
542 | devc->filter_ch2 = TRUE; | |
543 | else if (!strcmp(targets[i], "TRIGGER")) | |
544 | devc->filter_trigger = TRUE; | |
545 | else { | |
546 | sr_err("Invalid filter target %s.", targets[i]); | |
547 | ret = SR_ERR_ARG; | |
548 | } | |
549 | } | |
550 | g_strfreev(targets); | |
551 | break; | |
552 | case SR_CONF_VDIV: | |
553 | /* TODO: Not supporting vdiv per channel yet. */ | |
554 | g_variant_get(data, "(tt)", &p, &q); | |
555 | tmp_int = -1; | |
556 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
557 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
558 | tmp_int = i; | |
559 | break; | |
560 | } | |
561 | } | |
562 | if (tmp_int >= 0) { | |
563 | devc->voltage_ch1 = tmp_int; | |
564 | devc->voltage_ch2 = tmp_int; | |
565 | } else | |
566 | ret = SR_ERR_ARG; | |
567 | break; | |
568 | case SR_CONF_COUPLING: | |
569 | tmp_str = g_variant_get_string(data, NULL); | |
570 | /* TODO: Not supporting coupling per channel yet. */ | |
571 | for (i = 0; coupling[i]; i++) { | |
572 | if (!strcmp(tmp_str, coupling[i])) { | |
573 | devc->coupling_ch1 = i; | |
574 | devc->coupling_ch2 = i; | |
575 | break; | |
576 | } | |
577 | } | |
578 | if (coupling[i] == 0) | |
579 | ret = SR_ERR_ARG; | |
580 | break; | |
581 | default: | |
582 | ret = SR_ERR_NA; | |
583 | break; | |
584 | } | |
585 | ||
586 | return ret; | |
587 | } | |
588 | ||
589 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
590 | { | |
591 | struct dev_context *devc; | |
592 | GVariant *tuple, *rational[2]; | |
593 | GVariantBuilder gvb; | |
594 | unsigned int i; | |
595 | ||
596 | if (!sdi) | |
597 | return SR_ERR_ARG; | |
598 | ||
599 | devc = sdi->priv; | |
600 | switch (key) { | |
601 | case SR_CONF_SCAN_OPTIONS: | |
602 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
603 | scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t)); | |
604 | break; | |
605 | case SR_CONF_DEVICE_OPTIONS: | |
606 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
607 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
608 | break; | |
609 | case SR_CONF_BUFFERSIZE: | |
610 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
611 | devc->profile->buffersizes, 2, sizeof(uint64_t)); | |
612 | break; | |
613 | case SR_CONF_COUPLING: | |
614 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
615 | break; | |
616 | case SR_CONF_VDIV: | |
617 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
618 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
619 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
620 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
621 | tuple = g_variant_new_tuple(rational, 2); | |
622 | g_variant_builder_add_value(&gvb, tuple); | |
623 | } | |
624 | *data = g_variant_builder_end(&gvb); | |
625 | break; | |
626 | case SR_CONF_FILTER: | |
627 | *data = g_variant_new_strv(filter_targets, | |
628 | ARRAY_SIZE(filter_targets)); | |
629 | break; | |
630 | case SR_CONF_TIMEBASE: | |
631 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
632 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
633 | rational[0] = g_variant_new_uint64(timebases[i][0]); | |
634 | rational[1] = g_variant_new_uint64(timebases[i][1]); | |
635 | tuple = g_variant_new_tuple(rational, 2); | |
636 | g_variant_builder_add_value(&gvb, tuple); | |
637 | } | |
638 | *data = g_variant_builder_end(&gvb); | |
639 | break; | |
640 | case SR_CONF_TRIGGER_SOURCE: | |
641 | *data = g_variant_new_strv(trigger_sources, | |
642 | ARRAY_SIZE(trigger_sources)); | |
643 | break; | |
644 | default: | |
645 | return SR_ERR_NA; | |
646 | } | |
647 | ||
648 | return SR_OK; | |
649 | } | |
650 | ||
651 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
652 | int num_samples) | |
653 | { | |
654 | struct sr_datafeed_packet packet; | |
655 | struct sr_datafeed_analog analog; | |
656 | struct dev_context *devc; | |
657 | float ch1, ch2, range; | |
658 | int num_probes, data_offset, i; | |
659 | ||
660 | devc = sdi->priv; | |
661 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
662 | packet.type = SR_DF_ANALOG; | |
663 | packet.payload = &analog; | |
664 | /* TODO: support for 5xxx series 9-bit samples */ | |
665 | analog.probes = devc->enabled_probes; | |
666 | analog.num_samples = num_samples; | |
667 | analog.mq = SR_MQ_VOLTAGE; | |
668 | analog.unit = SR_UNIT_VOLT; | |
669 | /* TODO: Check malloc return value. */ | |
670 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); | |
671 | data_offset = 0; | |
672 | for (i = 0; i < analog.num_samples; i++) { | |
673 | /* | |
674 | * The device always sends data for both channels. If a channel | |
675 | * is disabled, it contains a copy of the enabled channel's | |
676 | * data. However, we only send the requested channels to | |
677 | * the bus. | |
678 | * | |
679 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
680 | * DSO-5200*), where the value is a point in the range | |
681 | * represented by the vdiv setting. There are 8 vertical divs, | |
682 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
683 | * and 255 = +2V. | |
684 | */ | |
685 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
686 | if (devc->ch1_enabled) { | |
687 | range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8; | |
688 | ch1 = range / 255 * *(buf + i * 2 + 1); | |
689 | /* Value is centered around 0V. */ | |
690 | ch1 -= range / 2; | |
691 | analog.data[data_offset++] = ch1; | |
692 | } | |
693 | if (devc->ch2_enabled) { | |
694 | range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8; | |
695 | ch2 = range / 255 * *(buf + i * 2); | |
696 | ch2 -= range / 2; | |
697 | analog.data[data_offset++] = ch2; | |
698 | } | |
699 | } | |
700 | sr_session_send(devc->cb_data, &packet); | |
701 | } | |
702 | ||
703 | /* | |
704 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
705 | * Only channel data comes in asynchronously, and all transfers for this are | |
706 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
707 | * the libsigrok session bus. | |
708 | */ | |
709 | static void receive_transfer(struct libusb_transfer *transfer) | |
710 | { | |
711 | struct sr_datafeed_packet packet; | |
712 | struct sr_dev_inst *sdi; | |
713 | struct dev_context *devc; | |
714 | int num_samples, pre; | |
715 | ||
716 | sdi = transfer->user_data; | |
717 | devc = sdi->priv; | |
718 | sr_spew("receive_transfer(): status %d received %d bytes.", | |
719 | transfer->status, transfer->actual_length); | |
720 | ||
721 | if (transfer->actual_length == 0) | |
722 | /* Nothing to send to the bus. */ | |
723 | return; | |
724 | ||
725 | num_samples = transfer->actual_length / 2; | |
726 | ||
727 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
728 | devc->samp_received + num_samples, devc->framesize); | |
729 | ||
730 | /* | |
731 | * The device always sends a full frame, but the beginning of the frame | |
732 | * doesn't represent the trigger point. The offset at which the trigger | |
733 | * happened came in with the capture state, so we need to start sending | |
734 | * from there up the session bus. The samples in the frame buffer | |
735 | * before that trigger point came after the end of the device's frame | |
736 | * buffer was reached, and it wrapped around to overwrite up until the | |
737 | * trigger point. | |
738 | */ | |
739 | if (devc->samp_received < devc->trigger_offset) { | |
740 | /* Trigger point not yet reached. */ | |
741 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
742 | /* The entire chunk is before the trigger point. */ | |
743 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
744 | transfer->buffer, num_samples * 2); | |
745 | devc->samp_buffered += num_samples; | |
746 | } else { | |
747 | /* | |
748 | * This chunk hits or overruns the trigger point. | |
749 | * Store the part before the trigger fired, and | |
750 | * send the rest up to the session bus. | |
751 | */ | |
752 | pre = devc->trigger_offset - devc->samp_received; | |
753 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
754 | transfer->buffer, pre * 2); | |
755 | devc->samp_buffered += pre; | |
756 | ||
757 | /* The rest of this chunk starts with the trigger point. */ | |
758 | sr_dbg("Reached trigger point, %d samples buffered.", | |
759 | devc->samp_buffered); | |
760 | ||
761 | /* Avoid the corner case where the chunk ended at | |
762 | * exactly the trigger point. */ | |
763 | if (num_samples > pre) | |
764 | send_chunk(sdi, transfer->buffer + pre * 2, | |
765 | num_samples - pre); | |
766 | } | |
767 | } else { | |
768 | /* Already past the trigger point, just send it all out. */ | |
769 | send_chunk(sdi, transfer->buffer, | |
770 | num_samples); | |
771 | } | |
772 | ||
773 | devc->samp_received += num_samples; | |
774 | ||
775 | /* Everything in this transfer was either copied to the buffer or | |
776 | * sent to the session bus. */ | |
777 | g_free(transfer->buffer); | |
778 | libusb_free_transfer(transfer); | |
779 | ||
780 | if (devc->samp_received >= devc->framesize) { | |
781 | /* That was the last chunk in this frame. Send the buffered | |
782 | * pre-trigger samples out now, in one big chunk. */ | |
783 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
784 | devc->samp_buffered); | |
785 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
786 | ||
787 | /* Mark the end of this frame. */ | |
788 | packet.type = SR_DF_FRAME_END; | |
789 | sr_session_send(devc->cb_data, &packet); | |
790 | ||
791 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
792 | /* Terminate session */ | |
793 | devc->dev_state = STOPPING; | |
794 | } else { | |
795 | devc->dev_state = NEW_CAPTURE; | |
796 | } | |
797 | } | |
798 | } | |
799 | ||
800 | static int handle_event(int fd, int revents, void *cb_data) | |
801 | { | |
802 | const struct sr_dev_inst *sdi; | |
803 | struct sr_datafeed_packet packet; | |
804 | struct timeval tv; | |
805 | struct dev_context *devc; | |
806 | struct drv_context *drvc = di->priv; | |
807 | const struct libusb_pollfd **lupfd; | |
808 | int num_probes, i; | |
809 | uint32_t trigger_offset; | |
810 | uint8_t capturestate; | |
811 | ||
812 | (void)fd; | |
813 | (void)revents; | |
814 | ||
815 | sdi = cb_data; | |
816 | devc = sdi->priv; | |
817 | if (devc->dev_state == STOPPING) { | |
818 | /* We've been told to wind up the acquisition. */ | |
819 | sr_dbg("Stopping acquisition."); | |
820 | /* | |
821 | * TODO: Doesn't really cancel pending transfers so they might | |
822 | * come in after SR_DF_END is sent. | |
823 | */ | |
824 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
825 | for (i = 0; lupfd[i]; i++) | |
826 | sr_source_remove(lupfd[i]->fd); | |
827 | free(lupfd); | |
828 | ||
829 | packet.type = SR_DF_END; | |
830 | sr_session_send(sdi, &packet); | |
831 | ||
832 | devc->dev_state = IDLE; | |
833 | ||
834 | return TRUE; | |
835 | } | |
836 | ||
837 | /* Always handle pending libusb events. */ | |
838 | tv.tv_sec = tv.tv_usec = 0; | |
839 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
840 | ||
841 | /* TODO: ugh */ | |
842 | if (devc->dev_state == NEW_CAPTURE) { | |
843 | if (dso_capture_start(sdi) != SR_OK) | |
844 | return TRUE; | |
845 | if (dso_enable_trigger(sdi) != SR_OK) | |
846 | return TRUE; | |
847 | // if (dso_force_trigger(sdi) != SR_OK) | |
848 | // return TRUE; | |
849 | sr_dbg("Successfully requested next chunk."); | |
850 | devc->dev_state = CAPTURE; | |
851 | return TRUE; | |
852 | } | |
853 | if (devc->dev_state != CAPTURE) | |
854 | return TRUE; | |
855 | ||
856 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
857 | return TRUE; | |
858 | ||
859 | sr_dbg("Capturestate %d.", capturestate); | |
860 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
861 | switch (capturestate) { | |
862 | case CAPTURE_EMPTY: | |
863 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
864 | devc->capture_empty_count = 0; | |
865 | if (dso_capture_start(sdi) != SR_OK) | |
866 | break; | |
867 | if (dso_enable_trigger(sdi) != SR_OK) | |
868 | break; | |
869 | // if (dso_force_trigger(sdi) != SR_OK) | |
870 | // break; | |
871 | sr_dbg("Successfully requested next chunk."); | |
872 | } | |
873 | break; | |
874 | case CAPTURE_FILLING: | |
875 | /* No data yet. */ | |
876 | break; | |
877 | case CAPTURE_READY_8BIT: | |
878 | /* Remember where in the captured frame the trigger is. */ | |
879 | devc->trigger_offset = trigger_offset; | |
880 | ||
881 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
882 | /* TODO: Check malloc return value. */ | |
883 | devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); | |
884 | devc->samp_buffered = devc->samp_received = 0; | |
885 | ||
886 | /* Tell the scope to send us the first frame. */ | |
887 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
888 | break; | |
889 | ||
890 | /* | |
891 | * Don't hit the state machine again until we're done fetching | |
892 | * the data we just told the scope to send. | |
893 | */ | |
894 | devc->dev_state = FETCH_DATA; | |
895 | ||
896 | /* Tell the frontend a new frame is on the way. */ | |
897 | packet.type = SR_DF_FRAME_BEGIN; | |
898 | sr_session_send(sdi, &packet); | |
899 | break; | |
900 | case CAPTURE_READY_9BIT: | |
901 | /* TODO */ | |
902 | sr_err("Not yet supported."); | |
903 | break; | |
904 | case CAPTURE_TIMEOUT: | |
905 | /* Doesn't matter, we'll try again next time. */ | |
906 | break; | |
907 | default: | |
908 | sr_dbg("Unknown capture state: %d.", capturestate); | |
909 | break; | |
910 | } | |
911 | ||
912 | return TRUE; | |
913 | } | |
914 | ||
915 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
916 | { | |
917 | const struct libusb_pollfd **lupfd; | |
918 | struct dev_context *devc; | |
919 | struct drv_context *drvc = di->priv; | |
920 | int i; | |
921 | ||
922 | if (sdi->status != SR_ST_ACTIVE) | |
923 | return SR_ERR_DEV_CLOSED; | |
924 | ||
925 | devc = sdi->priv; | |
926 | devc->cb_data = cb_data; | |
927 | ||
928 | if (configure_probes(sdi) != SR_OK) { | |
929 | sr_err("Failed to configure probes."); | |
930 | return SR_ERR; | |
931 | } | |
932 | ||
933 | if (dso_init(sdi) != SR_OK) | |
934 | return SR_ERR; | |
935 | ||
936 | if (dso_capture_start(sdi) != SR_OK) | |
937 | return SR_ERR; | |
938 | ||
939 | devc->dev_state = CAPTURE; | |
940 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
941 | for (i = 0; lupfd[i]; i++) | |
942 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, | |
943 | handle_event, (void *)sdi); | |
944 | free(lupfd); | |
945 | ||
946 | /* Send header packet to the session bus. */ | |
947 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
948 | ||
949 | return SR_OK; | |
950 | } | |
951 | ||
952 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
953 | { | |
954 | struct dev_context *devc; | |
955 | ||
956 | (void)cb_data; | |
957 | ||
958 | if (sdi->status != SR_ST_ACTIVE) | |
959 | return SR_ERR; | |
960 | ||
961 | devc = sdi->priv; | |
962 | devc->dev_state = STOPPING; | |
963 | ||
964 | return SR_OK; | |
965 | } | |
966 | ||
967 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { | |
968 | .name = "hantek-dso", | |
969 | .longname = "Hantek DSO", | |
970 | .api_version = 1, | |
971 | .init = init, | |
972 | .cleanup = cleanup, | |
973 | .scan = scan, | |
974 | .dev_list = dev_list, | |
975 | .dev_clear = clear_instances, | |
976 | .config_get = config_get, | |
977 | .config_set = config_set, | |
978 | .config_list = config_list, | |
979 | .dev_open = dev_open, | |
980 | .dev_close = dev_close, | |
981 | .dev_acquisition_start = dev_acquisition_start, | |
982 | .dev_acquisition_stop = dev_acquisition_stop, | |
983 | .priv = NULL, | |
984 | }; |