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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <stdint.h> | |
22 | #include <stdlib.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <unistd.h> | |
27 | #include <string.h> | |
28 | #include <sys/time.h> | |
29 | #include <inttypes.h> | |
30 | #include <glib.h> | |
31 | #include <libusb.h> | |
32 | #include "libsigrok.h" | |
33 | #include "libsigrok-internal.h" | |
34 | #include "dso.h" | |
35 | ||
36 | /* Max time in ms before we want to check on USB events */ | |
37 | /* TODO tune this properly */ | |
38 | #define TICK 1 | |
39 | ||
40 | static const int32_t devopts[] = { | |
41 | SR_CONF_OSCILLOSCOPE, | |
42 | SR_CONF_LIMIT_FRAMES, | |
43 | SR_CONF_CONTINUOUS, | |
44 | SR_CONF_TIMEBASE, | |
45 | SR_CONF_BUFFERSIZE, | |
46 | SR_CONF_TRIGGER_SOURCE, | |
47 | SR_CONF_TRIGGER_SLOPE, | |
48 | SR_CONF_HORIZ_TRIGGERPOS, | |
49 | SR_CONF_FILTER, | |
50 | SR_CONF_VDIV, | |
51 | SR_CONF_COUPLING, | |
52 | }; | |
53 | ||
54 | static const char *probe_names[] = { | |
55 | "CH1", "CH2", | |
56 | NULL, | |
57 | }; | |
58 | ||
59 | static const struct dso_profile dev_profiles[] = { | |
60 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
61 | "Hantek", "DSO-2090", | |
62 | FIRMWARE_DIR "/hantek-dso-2090.fw" }, | |
63 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
64 | "Hantek", "DSO-2150", | |
65 | FIRMWARE_DIR "/hantek-dso-2150.fw" }, | |
66 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
67 | "Hantek", "DSO-2250", | |
68 | FIRMWARE_DIR "/hantek-dso-2250.fw" }, | |
69 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
70 | "Hantek", "DSO-5200", | |
71 | FIRMWARE_DIR "/hantek-dso-5200.fw" }, | |
72 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
73 | "Hantek", "DSO-5200A", | |
74 | FIRMWARE_DIR "/hantek-dso-5200A.fw" }, | |
75 | { 0, 0, 0, 0, 0, 0, 0 }, | |
76 | }; | |
77 | ||
78 | static const uint64_t buffersizes[] = { | |
79 | 10240, | |
80 | 32768, | |
81 | /* TODO: 65535 */ | |
82 | }; | |
83 | ||
84 | static const uint64_t timebases[][2] = { | |
85 | /* microseconds */ | |
86 | { 10, 1000000 }, | |
87 | { 20, 1000000 }, | |
88 | { 40, 1000000 }, | |
89 | { 100, 1000000 }, | |
90 | { 200, 1000000 }, | |
91 | { 400, 1000000 }, | |
92 | /* milliseconds */ | |
93 | { 1, 1000 }, | |
94 | { 2, 1000 }, | |
95 | { 4, 1000 }, | |
96 | { 10, 1000 }, | |
97 | { 20, 1000 }, | |
98 | { 40, 1000 }, | |
99 | { 100, 1000 }, | |
100 | { 200, 1000 }, | |
101 | { 400, 1000 }, | |
102 | }; | |
103 | ||
104 | static const uint64_t vdivs[][2] = { | |
105 | /* millivolts */ | |
106 | { 10, 1000 }, | |
107 | { 20, 1000 }, | |
108 | { 50, 1000 }, | |
109 | { 100, 1000 }, | |
110 | { 200, 1000 }, | |
111 | { 500, 1000 }, | |
112 | /* volts */ | |
113 | { 1, 1 }, | |
114 | { 2, 1 }, | |
115 | { 5, 1 }, | |
116 | }; | |
117 | ||
118 | static const char *trigger_sources[] = { | |
119 | "CH1", | |
120 | "CH2", | |
121 | "EXT", | |
122 | /* TODO: forced */ | |
123 | }; | |
124 | ||
125 | static const char *filter_targets[] = { | |
126 | "CH1", | |
127 | "CH2", | |
128 | /* TODO: "TRIGGER", */ | |
129 | }; | |
130 | ||
131 | static const char *coupling[] = { | |
132 | "AC", | |
133 | "DC", | |
134 | "GND", | |
135 | }; | |
136 | ||
137 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info; | |
138 | static struct sr_dev_driver *di = &hantek_dso_driver_info; | |
139 | ||
140 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
141 | ||
142 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) | |
143 | { | |
144 | struct sr_dev_inst *sdi; | |
145 | struct sr_probe *probe; | |
146 | struct drv_context *drvc; | |
147 | struct dev_context *devc; | |
148 | int i; | |
149 | ||
150 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
151 | prof->vendor, prof->model, NULL); | |
152 | if (!sdi) | |
153 | return NULL; | |
154 | sdi->driver = di; | |
155 | ||
156 | /* | |
157 | * Add only the real probes -- EXT isn't a source of data, only | |
158 | * a trigger source internal to the device. | |
159 | */ | |
160 | for (i = 0; probe_names[i]; i++) { | |
161 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
162 | probe_names[i]))) | |
163 | return NULL; | |
164 | sdi->probes = g_slist_append(sdi->probes, probe); | |
165 | } | |
166 | ||
167 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
168 | sr_err("Device context malloc failed."); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | devc->profile = prof; | |
173 | devc->dev_state = IDLE; | |
174 | devc->timebase = DEFAULT_TIMEBASE; | |
175 | devc->ch1_enabled = TRUE; | |
176 | devc->ch2_enabled = TRUE; | |
177 | devc->voltage_ch1 = DEFAULT_VOLTAGE; | |
178 | devc->voltage_ch2 = DEFAULT_VOLTAGE; | |
179 | devc->coupling_ch1 = DEFAULT_COUPLING; | |
180 | devc->coupling_ch2 = DEFAULT_COUPLING; | |
181 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
182 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
183 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
184 | devc->framesize = DEFAULT_FRAMESIZE; | |
185 | devc->triggerslope = SLOPE_POSITIVE; | |
186 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
187 | devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; | |
188 | sdi->priv = devc; | |
189 | drvc = di->priv; | |
190 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
191 | ||
192 | return sdi; | |
193 | } | |
194 | ||
195 | static int configure_probes(const struct sr_dev_inst *sdi) | |
196 | { | |
197 | struct dev_context *devc; | |
198 | struct sr_probe *probe; | |
199 | const GSList *l; | |
200 | int p; | |
201 | ||
202 | devc = sdi->priv; | |
203 | ||
204 | g_slist_free(devc->enabled_probes); | |
205 | devc->ch1_enabled = devc->ch2_enabled = FALSE; | |
206 | for (l = sdi->probes, p = 0; l; l = l->next, p++) { | |
207 | probe = l->data; | |
208 | if (p == 0) | |
209 | devc->ch1_enabled = probe->enabled; | |
210 | else | |
211 | devc->ch2_enabled = probe->enabled; | |
212 | if (probe->enabled) | |
213 | devc->enabled_probes = g_slist_append(devc->enabled_probes, probe); | |
214 | } | |
215 | ||
216 | return SR_OK; | |
217 | } | |
218 | ||
219 | /* Properly close and free all devices. */ | |
220 | static int clear_instances(void) | |
221 | { | |
222 | struct sr_dev_inst *sdi; | |
223 | struct drv_context *drvc; | |
224 | struct dev_context *devc; | |
225 | GSList *l; | |
226 | ||
227 | drvc = di->priv; | |
228 | for (l = drvc->instances; l; l = l->next) { | |
229 | if (!(sdi = l->data)) { | |
230 | /* Log error, but continue cleaning up the rest. */ | |
231 | sr_err("%s: sdi was NULL, continuing", __func__); | |
232 | continue; | |
233 | } | |
234 | if (!(devc = sdi->priv)) { | |
235 | /* Log error, but continue cleaning up the rest. */ | |
236 | sr_err("%s: sdi->priv was NULL, continuing", __func__); | |
237 | continue; | |
238 | } | |
239 | dso_close(sdi); | |
240 | sr_usb_dev_inst_free(devc->usb); | |
241 | g_free(devc->triggersource); | |
242 | g_slist_free(devc->enabled_probes); | |
243 | ||
244 | sr_dev_inst_free(sdi); | |
245 | } | |
246 | ||
247 | g_slist_free(drvc->instances); | |
248 | drvc->instances = NULL; | |
249 | ||
250 | return SR_OK; | |
251 | } | |
252 | ||
253 | static int hw_init(struct sr_context *sr_ctx) | |
254 | { | |
255 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
256 | } | |
257 | ||
258 | static GSList *hw_scan(GSList *options) | |
259 | { | |
260 | struct sr_dev_inst *sdi; | |
261 | const struct dso_profile *prof; | |
262 | struct drv_context *drvc; | |
263 | struct dev_context *devc; | |
264 | GSList *devices; | |
265 | struct libusb_device_descriptor des; | |
266 | libusb_device **devlist; | |
267 | int devcnt, ret, i, j; | |
268 | ||
269 | (void)options; | |
270 | ||
271 | drvc = di->priv; | |
272 | drvc->instances = NULL; | |
273 | ||
274 | devcnt = 0; | |
275 | devices = 0; | |
276 | ||
277 | clear_instances(); | |
278 | ||
279 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
280 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
281 | for (i = 0; devlist[i]; i++) { | |
282 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
283 | sr_err("Failed to get device descriptor: %s.", | |
284 | libusb_error_name(ret)); | |
285 | continue; | |
286 | } | |
287 | ||
288 | prof = NULL; | |
289 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
290 | if (des.idVendor == dev_profiles[j].orig_vid | |
291 | && des.idProduct == dev_profiles[j].orig_pid) { | |
292 | /* Device matches the pre-firmware profile. */ | |
293 | prof = &dev_profiles[j]; | |
294 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
295 | sdi = dso_dev_new(devcnt, prof); | |
296 | devices = g_slist_append(devices, sdi); | |
297 | devc = sdi->priv; | |
298 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
299 | prof->firmware) == SR_OK) | |
300 | /* Remember when the firmware on this device was updated */ | |
301 | devc->fw_updated = g_get_monotonic_time(); | |
302 | else | |
303 | sr_err("Firmware upload failed for " | |
304 | "device %d.", devcnt); | |
305 | /* Dummy USB address of 0xff will get overwritten later. */ | |
306 | devc->usb = sr_usb_dev_inst_new( | |
307 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
308 | devcnt++; | |
309 | break; | |
310 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
311 | && des.idProduct == dev_profiles[j].fw_pid) { | |
312 | /* Device matches the post-firmware profile. */ | |
313 | prof = &dev_profiles[j]; | |
314 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
315 | sdi = dso_dev_new(devcnt, prof); | |
316 | sdi->status = SR_ST_INACTIVE; | |
317 | devices = g_slist_append(devices, sdi); | |
318 | devc = sdi->priv; | |
319 | devc->usb = 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 | int64_t timediff_us, timediff_ms; | |
344 | int err; | |
345 | ||
346 | devc = sdi->priv; | |
347 | ||
348 | /* | |
349 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
350 | * for the FX2 to renumerate. | |
351 | */ | |
352 | err = SR_ERR; | |
353 | if (devc->fw_updated > 0) { | |
354 | sr_info("Waiting for device to reset."); | |
355 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
356 | g_usleep(300 * 1000); | |
357 | timediff_ms = 0; | |
358 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
359 | if ((err = dso_open(sdi)) == SR_OK) | |
360 | break; | |
361 | g_usleep(100 * 1000); | |
362 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
363 | timediff_ms = timediff_us / 1000; | |
364 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
365 | } | |
366 | sr_info("Device came back after %d ms.", timediff_ms); | |
367 | } else { | |
368 | err = dso_open(sdi); | |
369 | } | |
370 | ||
371 | if (err != SR_OK) { | |
372 | sr_err("Unable to open device."); | |
373 | return SR_ERR; | |
374 | } | |
375 | ||
376 | err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE); | |
377 | if (err != 0) { | |
378 | sr_err("Unable to claim interface: %s.", | |
379 | libusb_error_name(err)); | |
380 | return SR_ERR; | |
381 | } | |
382 | ||
383 | return SR_OK; | |
384 | } | |
385 | ||
386 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
387 | { | |
388 | dso_close(sdi); | |
389 | ||
390 | return SR_OK; | |
391 | } | |
392 | ||
393 | static int hw_cleanup(void) | |
394 | { | |
395 | struct drv_context *drvc; | |
396 | ||
397 | if (!(drvc = di->priv)) | |
398 | return SR_OK; | |
399 | ||
400 | clear_instances(); | |
401 | ||
402 | return SR_OK; | |
403 | } | |
404 | ||
405 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) | |
406 | { | |
407 | struct dev_context *devc; | |
408 | double tmp_double; | |
409 | uint64_t tmp_u64, p, q; | |
410 | int tmp_int, ret; | |
411 | unsigned int i; | |
412 | const char *tmp_str; | |
413 | char **targets; | |
414 | ||
415 | if (sdi->status != SR_ST_ACTIVE) | |
416 | return SR_ERR; | |
417 | ||
418 | ret = SR_OK; | |
419 | devc = sdi->priv; | |
420 | switch (id) { | |
421 | case SR_CONF_LIMIT_FRAMES: | |
422 | devc->limit_frames = g_variant_get_uint64(data); | |
423 | break; | |
424 | case SR_CONF_TRIGGER_SLOPE: | |
425 | tmp_u64 = g_variant_get_uint64(data); | |
426 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) | |
427 | ret = SR_ERR_ARG; | |
428 | devc->triggerslope = tmp_u64; | |
429 | break; | |
430 | case SR_CONF_HORIZ_TRIGGERPOS: | |
431 | tmp_double = g_variant_get_double(data); | |
432 | if (tmp_double < 0.0 || tmp_double > 1.0) { | |
433 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
434 | ret = SR_ERR_ARG; | |
435 | } else | |
436 | devc->triggerposition = tmp_double; | |
437 | break; | |
438 | case SR_CONF_BUFFERSIZE: | |
439 | tmp_u64 = g_variant_get_uint64(data); | |
440 | for (i = 0; buffersizes[i]; i++) { | |
441 | if (buffersizes[i] == tmp_u64) { | |
442 | devc->framesize = tmp_u64; | |
443 | break; | |
444 | } | |
445 | } | |
446 | if (buffersizes[i] == 0) | |
447 | ret = SR_ERR_ARG; | |
448 | break; | |
449 | case SR_CONF_TIMEBASE: | |
450 | g_variant_get(data, "(tt)", &p, &q); | |
451 | tmp_int = -1; | |
452 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
453 | if (timebases[i][0] == p && timebases[i][1] == q) { | |
454 | tmp_int = i; | |
455 | break; | |
456 | } | |
457 | } | |
458 | if (tmp_int >= 0) | |
459 | devc->timebase = tmp_int; | |
460 | else | |
461 | ret = SR_ERR_ARG; | |
462 | break; | |
463 | case SR_CONF_TRIGGER_SOURCE: | |
464 | tmp_str = g_variant_get_string(data, NULL); | |
465 | for (i = 0; trigger_sources[i]; i++) { | |
466 | if (!strcmp(tmp_str, trigger_sources[i])) { | |
467 | devc->triggersource = g_strdup(tmp_str); | |
468 | break; | |
469 | } | |
470 | } | |
471 | if (trigger_sources[i] == 0) | |
472 | ret = SR_ERR_ARG; | |
473 | break; | |
474 | case SR_CONF_FILTER: | |
475 | tmp_str = g_variant_get_string(data, NULL); | |
476 | devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0; | |
477 | targets = g_strsplit(tmp_str, ",", 0); | |
478 | for (i = 0; targets[i]; i++) { | |
479 | if (targets[i] == '\0') | |
480 | /* Empty filter string can be used to clear them all. */ | |
481 | ; | |
482 | else if (!strcmp(targets[i], "CH1")) | |
483 | devc->filter_ch1 = TRUE; | |
484 | else if (!strcmp(targets[i], "CH2")) | |
485 | devc->filter_ch2 = TRUE; | |
486 | else if (!strcmp(targets[i], "TRIGGER")) | |
487 | devc->filter_trigger = TRUE; | |
488 | else { | |
489 | sr_err("Invalid filter target %s.", targets[i]); | |
490 | ret = SR_ERR_ARG; | |
491 | } | |
492 | } | |
493 | g_strfreev(targets); | |
494 | break; | |
495 | case SR_CONF_VDIV: | |
496 | /* TODO: Not supporting vdiv per channel yet. */ | |
497 | g_variant_get(data, "(tt)", &p, &q); | |
498 | tmp_int = -1; | |
499 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
500 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
501 | tmp_int = i; | |
502 | break; | |
503 | } | |
504 | } | |
505 | if (tmp_int >= 0) { | |
506 | devc->voltage_ch1 = tmp_int; | |
507 | devc->voltage_ch2 = tmp_int; | |
508 | } else | |
509 | ret = SR_ERR_ARG; | |
510 | break; | |
511 | case SR_CONF_COUPLING: | |
512 | tmp_str = g_variant_get_string(data, NULL); | |
513 | /* TODO: Not supporting coupling per channel yet. */ | |
514 | for (i = 0; coupling[i]; i++) { | |
515 | if (!strcmp(tmp_str, coupling[i])) { | |
516 | devc->coupling_ch1 = i; | |
517 | devc->coupling_ch2 = i; | |
518 | break; | |
519 | } | |
520 | } | |
521 | if (coupling[i] == 0) | |
522 | ret = SR_ERR_ARG; | |
523 | break; | |
524 | default: | |
525 | ret = SR_ERR_ARG; | |
526 | break; | |
527 | } | |
528 | ||
529 | return ret; | |
530 | } | |
531 | ||
532 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
533 | { | |
534 | ||
535 | (void)sdi; | |
536 | ||
537 | switch (key) { | |
538 | case SR_CONF_DEVICE_OPTIONS: | |
539 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
540 | devopts, ARRAY_SIZE(devopts), sizeof(int32_t)); | |
541 | break; | |
542 | case SR_CONF_BUFFERSIZE: | |
543 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
544 | buffersizes, ARRAY_SIZE(buffersizes), sizeof(uint64_t)); | |
545 | break; | |
546 | case SR_CONF_COUPLING: | |
547 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
548 | break; | |
549 | case SR_CONF_VDIV: | |
550 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
551 | vdivs, ARRAY_SIZE(vdivs) * 2, sizeof(uint64_t)); | |
552 | break; | |
553 | case SR_CONF_FILTER: | |
554 | *data = g_variant_new_strv(filter_targets, | |
555 | ARRAY_SIZE(filter_targets)); | |
556 | break; | |
557 | case SR_CONF_TIMEBASE: | |
558 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
559 | timebases, ARRAY_SIZE(timebases) * 2, sizeof(uint64_t)); | |
560 | break; | |
561 | case SR_CONF_TRIGGER_SOURCE: | |
562 | *data = g_variant_new_strv(trigger_sources, | |
563 | ARRAY_SIZE(trigger_sources)); | |
564 | break; | |
565 | default: | |
566 | return SR_ERR_ARG; | |
567 | } | |
568 | ||
569 | return SR_OK; | |
570 | } | |
571 | ||
572 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
573 | int num_samples) | |
574 | { | |
575 | struct sr_datafeed_packet packet; | |
576 | struct sr_datafeed_analog analog; | |
577 | struct dev_context *devc; | |
578 | float ch1, ch2, range; | |
579 | int num_probes, data_offset, i; | |
580 | ||
581 | devc = sdi->priv; | |
582 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
583 | packet.type = SR_DF_ANALOG; | |
584 | packet.payload = &analog; | |
585 | /* TODO: support for 5xxx series 9-bit samples */ | |
586 | analog.probes = devc->enabled_probes; | |
587 | analog.num_samples = num_samples; | |
588 | analog.mq = SR_MQ_VOLTAGE; | |
589 | analog.unit = SR_UNIT_VOLT; | |
590 | /* TODO: Check malloc return value. */ | |
591 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); | |
592 | data_offset = 0; | |
593 | for (i = 0; i < analog.num_samples; i++) { | |
594 | /* | |
595 | * The device always sends data for both channels. If a channel | |
596 | * is disabled, it contains a copy of the enabled channel's | |
597 | * data. However, we only send the requested channels to | |
598 | * the bus. | |
599 | * | |
600 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
601 | * DSO-5200*), where the value is a point in the range | |
602 | * represented by the vdiv setting. There are 8 vertical divs, | |
603 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
604 | * and 255 = +2V. | |
605 | */ | |
606 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
607 | if (devc->ch1_enabled) { | |
608 | range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8; | |
609 | ch1 = range / 255 * *(buf + i * 2 + 1); | |
610 | /* Value is centered around 0V. */ | |
611 | ch1 -= range / 2; | |
612 | analog.data[data_offset++] = ch1; | |
613 | } | |
614 | if (devc->ch2_enabled) { | |
615 | range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8; | |
616 | ch2 = range / 255 * *(buf + i * 2); | |
617 | ch2 -= range / 2; | |
618 | analog.data[data_offset++] = ch2; | |
619 | } | |
620 | } | |
621 | sr_session_send(devc->cb_data, &packet); | |
622 | } | |
623 | ||
624 | /* | |
625 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
626 | * Only channel data comes in asynchronously, and all transfers for this are | |
627 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
628 | * the libsigrok session bus. | |
629 | */ | |
630 | static void receive_transfer(struct libusb_transfer *transfer) | |
631 | { | |
632 | struct sr_datafeed_packet packet; | |
633 | struct sr_dev_inst *sdi; | |
634 | struct dev_context *devc; | |
635 | int num_samples, pre; | |
636 | ||
637 | sdi = transfer->user_data; | |
638 | devc = sdi->priv; | |
639 | sr_spew("receive_transfer(): status %d received %d bytes.", | |
640 | transfer->status, transfer->actual_length); | |
641 | ||
642 | if (transfer->actual_length == 0) | |
643 | /* Nothing to send to the bus. */ | |
644 | return; | |
645 | ||
646 | num_samples = transfer->actual_length / 2; | |
647 | ||
648 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
649 | devc->samp_received + num_samples, devc->framesize); | |
650 | ||
651 | /* | |
652 | * The device always sends a full frame, but the beginning of the frame | |
653 | * doesn't represent the trigger point. The offset at which the trigger | |
654 | * happened came in with the capture state, so we need to start sending | |
655 | * from there up the session bus. The samples in the frame buffer | |
656 | * before that trigger point came after the end of the device's frame | |
657 | * buffer was reached, and it wrapped around to overwrite up until the | |
658 | * trigger point. | |
659 | */ | |
660 | if (devc->samp_received < devc->trigger_offset) { | |
661 | /* Trigger point not yet reached. */ | |
662 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
663 | /* The entire chunk is before the trigger point. */ | |
664 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
665 | transfer->buffer, num_samples * 2); | |
666 | devc->samp_buffered += num_samples; | |
667 | } else { | |
668 | /* | |
669 | * This chunk hits or overruns the trigger point. | |
670 | * Store the part before the trigger fired, and | |
671 | * send the rest up to the session bus. | |
672 | */ | |
673 | pre = devc->trigger_offset - devc->samp_received; | |
674 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
675 | transfer->buffer, pre * 2); | |
676 | devc->samp_buffered += pre; | |
677 | ||
678 | /* The rest of this chunk starts with the trigger point. */ | |
679 | sr_dbg("Reached trigger point, %d samples buffered.", | |
680 | devc->samp_buffered); | |
681 | ||
682 | /* Avoid the corner case where the chunk ended at | |
683 | * exactly the trigger point. */ | |
684 | if (num_samples > pre) | |
685 | send_chunk(sdi, transfer->buffer + pre * 2, | |
686 | num_samples - pre); | |
687 | } | |
688 | } else { | |
689 | /* Already past the trigger point, just send it all out. */ | |
690 | send_chunk(sdi, transfer->buffer, | |
691 | num_samples); | |
692 | } | |
693 | ||
694 | devc->samp_received += num_samples; | |
695 | ||
696 | /* Everything in this transfer was either copied to the buffer or | |
697 | * sent to the session bus. */ | |
698 | g_free(transfer->buffer); | |
699 | libusb_free_transfer(transfer); | |
700 | ||
701 | if (devc->samp_received >= devc->framesize) { | |
702 | /* That was the last chunk in this frame. Send the buffered | |
703 | * pre-trigger samples out now, in one big chunk. */ | |
704 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
705 | devc->samp_buffered); | |
706 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
707 | ||
708 | /* Mark the end of this frame. */ | |
709 | packet.type = SR_DF_FRAME_END; | |
710 | sr_session_send(devc->cb_data, &packet); | |
711 | ||
712 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
713 | /* Terminate session */ | |
714 | devc->dev_state = STOPPING; | |
715 | } else { | |
716 | devc->dev_state = NEW_CAPTURE; | |
717 | } | |
718 | } | |
719 | } | |
720 | ||
721 | static int handle_event(int fd, int revents, void *cb_data) | |
722 | { | |
723 | const struct sr_dev_inst *sdi; | |
724 | struct sr_datafeed_packet packet; | |
725 | struct timeval tv; | |
726 | struct dev_context *devc; | |
727 | struct drv_context *drvc = di->priv; | |
728 | const struct libusb_pollfd **lupfd; | |
729 | int num_probes, i; | |
730 | uint32_t trigger_offset; | |
731 | uint8_t capturestate; | |
732 | ||
733 | (void)fd; | |
734 | (void)revents; | |
735 | ||
736 | sdi = cb_data; | |
737 | devc = sdi->priv; | |
738 | if (devc->dev_state == STOPPING) { | |
739 | /* We've been told to wind up the acquisition. */ | |
740 | sr_dbg("Stopping acquisition."); | |
741 | /* | |
742 | * TODO: Doesn't really cancel pending transfers so they might | |
743 | * come in after SR_DF_END is sent. | |
744 | */ | |
745 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
746 | for (i = 0; lupfd[i]; i++) | |
747 | sr_source_remove(lupfd[i]->fd); | |
748 | free(lupfd); | |
749 | ||
750 | packet.type = SR_DF_END; | |
751 | sr_session_send(sdi, &packet); | |
752 | ||
753 | devc->dev_state = IDLE; | |
754 | ||
755 | return TRUE; | |
756 | } | |
757 | ||
758 | /* Always handle pending libusb events. */ | |
759 | tv.tv_sec = tv.tv_usec = 0; | |
760 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
761 | ||
762 | /* TODO: ugh */ | |
763 | if (devc->dev_state == NEW_CAPTURE) { | |
764 | if (dso_capture_start(devc) != SR_OK) | |
765 | return TRUE; | |
766 | if (dso_enable_trigger(devc) != SR_OK) | |
767 | return TRUE; | |
768 | // if (dso_force_trigger(devc) != SR_OK) | |
769 | // return TRUE; | |
770 | sr_dbg("Successfully requested next chunk."); | |
771 | devc->dev_state = CAPTURE; | |
772 | return TRUE; | |
773 | } | |
774 | if (devc->dev_state != CAPTURE) | |
775 | return TRUE; | |
776 | ||
777 | if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK) | |
778 | return TRUE; | |
779 | ||
780 | sr_dbg("Capturestate %d.", capturestate); | |
781 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
782 | switch (capturestate) { | |
783 | case CAPTURE_EMPTY: | |
784 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
785 | devc->capture_empty_count = 0; | |
786 | if (dso_capture_start(devc) != SR_OK) | |
787 | break; | |
788 | if (dso_enable_trigger(devc) != SR_OK) | |
789 | break; | |
790 | // if (dso_force_trigger(devc) != SR_OK) | |
791 | // break; | |
792 | sr_dbg("Successfully requested next chunk."); | |
793 | } | |
794 | break; | |
795 | case CAPTURE_FILLING: | |
796 | /* No data yet. */ | |
797 | break; | |
798 | case CAPTURE_READY_8BIT: | |
799 | /* Remember where in the captured frame the trigger is. */ | |
800 | devc->trigger_offset = trigger_offset; | |
801 | ||
802 | num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1; | |
803 | /* TODO: Check malloc return value. */ | |
804 | devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2); | |
805 | devc->samp_buffered = devc->samp_received = 0; | |
806 | ||
807 | /* Tell the scope to send us the first frame. */ | |
808 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
809 | break; | |
810 | ||
811 | /* | |
812 | * Don't hit the state machine again until we're done fetching | |
813 | * the data we just told the scope to send. | |
814 | */ | |
815 | devc->dev_state = FETCH_DATA; | |
816 | ||
817 | /* Tell the frontend a new frame is on the way. */ | |
818 | packet.type = SR_DF_FRAME_BEGIN; | |
819 | sr_session_send(sdi, &packet); | |
820 | break; | |
821 | case CAPTURE_READY_9BIT: | |
822 | /* TODO */ | |
823 | sr_err("Not yet supported."); | |
824 | break; | |
825 | case CAPTURE_TIMEOUT: | |
826 | /* Doesn't matter, we'll try again next time. */ | |
827 | break; | |
828 | default: | |
829 | sr_dbg("Unknown capture state: %d.", capturestate); | |
830 | break; | |
831 | } | |
832 | ||
833 | return TRUE; | |
834 | } | |
835 | ||
836 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
837 | void *cb_data) | |
838 | { | |
839 | const struct libusb_pollfd **lupfd; | |
840 | struct dev_context *devc; | |
841 | struct drv_context *drvc = di->priv; | |
842 | int i; | |
843 | ||
844 | if (sdi->status != SR_ST_ACTIVE) | |
845 | return SR_ERR; | |
846 | ||
847 | devc = sdi->priv; | |
848 | devc->cb_data = cb_data; | |
849 | ||
850 | if (configure_probes(sdi) != SR_OK) { | |
851 | sr_err("Failed to configure probes."); | |
852 | return SR_ERR; | |
853 | } | |
854 | ||
855 | if (dso_init(devc) != SR_OK) | |
856 | return SR_ERR; | |
857 | ||
858 | if (dso_capture_start(devc) != SR_OK) | |
859 | return SR_ERR; | |
860 | ||
861 | devc->dev_state = CAPTURE; | |
862 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
863 | for (i = 0; lupfd[i]; i++) | |
864 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, | |
865 | handle_event, (void *)sdi); | |
866 | free(lupfd); | |
867 | ||
868 | /* Send header packet to the session bus. */ | |
869 | std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN); | |
870 | ||
871 | return SR_OK; | |
872 | } | |
873 | ||
874 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
875 | { | |
876 | struct dev_context *devc; | |
877 | ||
878 | (void)cb_data; | |
879 | ||
880 | if (sdi->status != SR_ST_ACTIVE) | |
881 | return SR_ERR; | |
882 | ||
883 | devc = sdi->priv; | |
884 | devc->dev_state = STOPPING; | |
885 | ||
886 | return SR_OK; | |
887 | } | |
888 | ||
889 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { | |
890 | .name = "hantek-dso", | |
891 | .longname = "Hantek DSO", | |
892 | .api_version = 1, | |
893 | .init = hw_init, | |
894 | .cleanup = hw_cleanup, | |
895 | .scan = hw_scan, | |
896 | .dev_list = hw_dev_list, | |
897 | .dev_clear = clear_instances, | |
898 | .config_get = NULL, | |
899 | .config_set = config_set, | |
900 | .config_list = config_list, | |
901 | .dev_open = hw_dev_open, | |
902 | .dev_close = hw_dev_close, | |
903 | .dev_acquisition_start = hw_dev_acquisition_start, | |
904 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
905 | .priv = NULL, | |
906 | }; |