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3b533202 BV |
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> | |
3b533202 BV |
30 | #include <glib.h> |
31 | #include <libusb.h> | |
45c59c8b BV |
32 | #include "libsigrok.h" |
33 | #include "libsigrok-internal.h" | |
3b533202 BV |
34 | #include "config.h" |
35 | #include "dso.h" | |
36 | ||
37 | ||
fc8fe3e3 BV |
38 | /* Max time in ms before we want to check on USB events */ |
39 | /* TODO tune this properly */ | |
3b533202 BV |
40 | #define TICK 1 |
41 | ||
62bb8840 | 42 | static const int hwcaps[] = { |
3b533202 | 43 | SR_HWCAP_OSCILLOSCOPE, |
ae88b97b | 44 | SR_HWCAP_LIMIT_SAMPLES, |
3b533202 | 45 | SR_HWCAP_CONTINUOUS, |
a370ef19 BV |
46 | SR_HWCAP_TIMEBASE, |
47 | SR_HWCAP_BUFFERSIZE, | |
48 | SR_HWCAP_TRIGGER_SOURCE, | |
49 | SR_HWCAP_TRIGGER_SLOPE, | |
50 | SR_HWCAP_HORIZ_TRIGGERPOS, | |
ebb781a6 | 51 | SR_HWCAP_FILTER, |
313deed2 | 52 | SR_HWCAP_VDIV, |
4a090d72 | 53 | SR_HWCAP_COUPLING, |
3b533202 BV |
54 | 0, |
55 | }; | |
56 | ||
57 | static const char *probe_names[] = { | |
58 | "CH1", | |
59 | "CH2", | |
60 | NULL, | |
61 | }; | |
62 | ||
62bb8840 | 63 | static const struct dso_profile dev_profiles[] = { |
88a13f30 | 64 | { 0x04b4, 0x2090, 0x04b5, 0x2090, |
3b533202 | 65 | "Hantek", "DSO-2090", |
88a13f30 BV |
66 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, |
67 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
68 | "Hantek", "DSO-2150", | |
69 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, | |
70 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
71 | "Hantek", "DSO-2250", | |
72 | FIRMWARE_DIR "/hantek-dso-2xxx.fw" }, | |
73 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
74 | "Hantek", "DSO-5200", | |
75 | FIRMWARE_DIR "/hantek-dso-5xxx.fw" }, | |
76 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
77 | "Hantek", "DSO-5200A", | |
78 | FIRMWARE_DIR "/hantek-dso-5xxx.fw" }, | |
79 | { 0, 0, 0, 0, 0, 0, 0 }, | |
3b533202 BV |
80 | }; |
81 | ||
62bb8840 | 82 | static const uint64_t buffersizes[] = { |
a370ef19 BV |
83 | 10240, |
84 | 32768, | |
85 | /* TODO: 65535 */ | |
62bb8840 | 86 | 0, |
a370ef19 BV |
87 | }; |
88 | ||
62bb8840 | 89 | static const struct sr_rational timebases[] = { |
a370ef19 BV |
90 | /* microseconds */ |
91 | { 10, 1000000 }, | |
92 | { 20, 1000000 }, | |
93 | { 40, 1000000 }, | |
94 | { 100, 1000000 }, | |
95 | { 200, 1000000 }, | |
96 | { 400, 1000000 }, | |
97 | /* milliseconds */ | |
98 | { 1, 1000 }, | |
99 | { 2, 1000 }, | |
100 | { 4, 1000 }, | |
101 | { 10, 1000 }, | |
102 | { 20, 1000 }, | |
103 | { 40, 1000 }, | |
104 | { 100, 1000 }, | |
105 | { 200, 1000 }, | |
106 | { 400, 1000 }, | |
62bb8840 | 107 | { 0, 0}, |
a370ef19 BV |
108 | }; |
109 | ||
62bb8840 | 110 | static const struct sr_rational vdivs[] = { |
313deed2 BV |
111 | /* millivolts */ |
112 | { 10, 1000 }, | |
113 | { 20, 1000 }, | |
114 | { 50, 1000 }, | |
115 | { 100, 1000 }, | |
116 | { 200, 1000 }, | |
117 | { 500, 1000 }, | |
118 | /* volts */ | |
119 | { 1, 1 }, | |
120 | { 2, 1 }, | |
121 | { 5, 1 }, | |
62bb8840 | 122 | { 0, 0 }, |
313deed2 BV |
123 | }; |
124 | ||
62bb8840 | 125 | static const char *trigger_sources[] = { |
a370ef19 BV |
126 | "CH1", |
127 | "CH2", | |
128 | "EXT", | |
88a13f30 | 129 | /* TODO: forced */ |
62bb8840 | 130 | NULL, |
a370ef19 | 131 | }; |
3b533202 | 132 | |
62bb8840 | 133 | static const char *filter_targets[] = { |
ebb781a6 BV |
134 | "CH1", |
135 | "CH2", | |
136 | /* TODO: "TRIGGER", */ | |
62bb8840 | 137 | NULL, |
ebb781a6 BV |
138 | }; |
139 | ||
62bb8840 | 140 | static const char *coupling[] = { |
b58fbd99 BV |
141 | "AC", |
142 | "DC", | |
143 | "GND", | |
62bb8840 | 144 | NULL, |
b58fbd99 BV |
145 | }; |
146 | ||
3b533202 BV |
147 | SR_PRIV libusb_context *usb_context = NULL; |
148 | SR_PRIV GSList *dev_insts = NULL; | |
149 | ||
62bb8840 | 150 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) |
3b533202 BV |
151 | { |
152 | struct sr_dev_inst *sdi; | |
153 | struct context *ctx; | |
154 | ||
155 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
88a13f30 | 156 | prof->vendor, prof->model, NULL); |
3b533202 BV |
157 | if (!sdi) |
158 | return NULL; | |
159 | ||
160 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { | |
161 | sr_err("hantek-dso: ctx malloc failed"); | |
162 | return NULL; | |
163 | } | |
164 | ctx->profile = prof; | |
165 | ctx->dev_state = IDLE; | |
166 | ctx->timebase = DEFAULT_TIMEBASE; | |
167 | ctx->ch1_enabled = TRUE; | |
168 | ctx->ch2_enabled = TRUE; | |
169 | ctx->voltage_ch1 = DEFAULT_VOLTAGE; | |
170 | ctx->voltage_ch2 = DEFAULT_VOLTAGE; | |
171 | ctx->coupling_ch1 = DEFAULT_COUPLING; | |
172 | ctx->coupling_ch2 = DEFAULT_COUPLING; | |
173 | ctx->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
174 | ctx->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
175 | ctx->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
3b533202 BV |
176 | ctx->framesize = DEFAULT_FRAMESIZE; |
177 | ctx->triggerslope = SLOPE_POSITIVE; | |
a370ef19 | 178 | ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); |
3b533202 BV |
179 | ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; |
180 | sdi->priv = ctx; | |
181 | dev_insts = g_slist_append(dev_insts, sdi); | |
182 | ||
183 | return sdi; | |
184 | } | |
185 | ||
62bb8840 | 186 | static int configure_probes(struct context *ctx, const GSList *probes) |
3b533202 | 187 | { |
62bb8840 UH |
188 | const struct sr_probe *probe; |
189 | const GSList *l; | |
3b533202 | 190 | |
6e71ef3b | 191 | ctx->ch1_enabled = ctx->ch2_enabled = FALSE; |
3b533202 BV |
192 | for (l = probes; l; l = l->next) { |
193 | probe = (struct sr_probe *)l->data; | |
6e71ef3b | 194 | if (probe->index == 1) |
3b533202 | 195 | ctx->ch1_enabled = probe->enabled; |
6e71ef3b | 196 | else if (probe->index == 2) |
3b533202 BV |
197 | ctx->ch2_enabled = probe->enabled; |
198 | } | |
199 | ||
200 | return SR_OK; | |
201 | } | |
202 | ||
40dda2c3 | 203 | static int hw_init(void) |
3b533202 BV |
204 | { |
205 | struct sr_dev_inst *sdi; | |
206 | struct libusb_device_descriptor des; | |
62bb8840 | 207 | const struct dso_profile *prof; |
3b533202 BV |
208 | struct context *ctx; |
209 | libusb_device **devlist; | |
210 | int err, devcnt, i, j; | |
211 | ||
3b533202 BV |
212 | if (libusb_init(&usb_context) != 0) { |
213 | sr_err("hantek-dso: Failed to initialize USB."); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
218 | devcnt = 0; | |
219 | libusb_get_device_list(usb_context, &devlist); | |
220 | for (i = 0; devlist[i]; i++) { | |
221 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
222 | sr_err("hantek-dso: failed to get device descriptor: %d", err); | |
223 | continue; | |
224 | } | |
225 | ||
226 | prof = NULL; | |
227 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
228 | if (des.idVendor == dev_profiles[j].orig_vid | |
229 | && des.idProduct == dev_profiles[j].orig_pid) { | |
230 | /* Device matches the pre-firmware profile. */ | |
231 | prof = &dev_profiles[j]; | |
232 | sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model); | |
233 | sdi = dso_dev_new(devcnt, prof); | |
234 | ctx = sdi->priv; | |
235 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
236 | prof->firmware) == SR_OK) | |
237 | /* Remember when the firmware on this device was updated */ | |
fc8fe3e3 | 238 | ctx->fw_updated = g_get_monotonic_time(); |
3b533202 BV |
239 | else |
240 | sr_err("hantek-dso: firmware upload failed for " | |
241 | "device %d", devcnt); | |
242 | /* Dummy USB address of 0xff will get overwritten later. */ | |
243 | ctx->usb = sr_usb_dev_inst_new( | |
244 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
245 | devcnt++; | |
246 | break; | |
247 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
248 | && des.idProduct == dev_profiles[j].fw_pid) { | |
249 | /* Device matches the post-firmware profile. */ | |
250 | prof = &dev_profiles[j]; | |
251 | sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model); | |
252 | sdi = dso_dev_new(devcnt, prof); | |
253 | sdi->status = SR_ST_INACTIVE; | |
254 | ctx = sdi->priv; | |
255 | ctx->usb = sr_usb_dev_inst_new( | |
256 | libusb_get_bus_number(devlist[i]), | |
257 | libusb_get_device_address(devlist[i]), NULL); | |
258 | devcnt++; | |
259 | break; | |
260 | } | |
261 | } | |
262 | if (!prof) | |
263 | /* not a supported VID/PID */ | |
264 | continue; | |
265 | } | |
266 | libusb_free_device_list(devlist, 1); | |
267 | ||
268 | return devcnt; | |
269 | } | |
270 | ||
271 | static int hw_dev_open(int dev_index) | |
272 | { | |
3b533202 BV |
273 | struct sr_dev_inst *sdi; |
274 | struct context *ctx; | |
fc8fe3e3 BV |
275 | int64_t timediff_us, timediff_ms; |
276 | int err; | |
3b533202 BV |
277 | |
278 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
279 | return SR_ERR_ARG; | |
280 | ctx = sdi->priv; | |
281 | ||
282 | /* | |
fc8fe3e3 | 283 | * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS |
3b533202 BV |
284 | * for the FX2 to renumerate |
285 | */ | |
fc8fe3e3 BV |
286 | err = SR_ERR; |
287 | if (ctx->fw_updated > 0) { | |
3b533202 BV |
288 | sr_info("hantek-dso: waiting for device to reset"); |
289 | /* takes at least 300ms for the FX2 to be gone from the USB bus */ | |
290 | g_usleep(300 * 1000); | |
fc8fe3e3 BV |
291 | timediff_ms = 0; |
292 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
3b533202 BV |
293 | if ((err = dso_open(dev_index)) == SR_OK) |
294 | break; | |
295 | g_usleep(100 * 1000); | |
fc8fe3e3 BV |
296 | timediff_us = g_get_monotonic_time() - ctx->fw_updated; |
297 | timediff_ms = timediff_us / 1000; | |
99f5d45e | 298 | sr_spew("hantek-dso: waited %" PRIi64 " ms", timediff_ms); |
3b533202 | 299 | } |
fc8fe3e3 | 300 | sr_info("hantek-dso: device came back after %d ms", timediff_ms); |
3b533202 BV |
301 | } else { |
302 | err = dso_open(dev_index); | |
303 | } | |
304 | ||
305 | if (err != SR_OK) { | |
306 | sr_err("hantek-dso: unable to open device"); | |
307 | return SR_ERR; | |
308 | } | |
309 | ||
310 | err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); | |
311 | if (err != 0) { | |
312 | sr_err("hantek-dso: Unable to claim interface: %d", err); | |
313 | return SR_ERR; | |
314 | } | |
315 | ||
316 | return SR_OK; | |
317 | } | |
318 | ||
319 | static int hw_dev_close(int dev_index) | |
320 | { | |
321 | struct sr_dev_inst *sdi; | |
322 | ||
323 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
324 | return SR_ERR_ARG; | |
325 | ||
326 | dso_close(sdi); | |
327 | ||
328 | return SR_OK; | |
329 | } | |
330 | ||
331 | static int hw_cleanup(void) | |
332 | { | |
333 | GSList *l; | |
334 | struct sr_dev_inst *sdi; | |
335 | struct context *ctx; | |
336 | ||
337 | /* Properly close and free all devices. */ | |
338 | for (l = dev_insts; l; l = l->next) { | |
339 | if (!(sdi = l->data)) { | |
340 | /* Log error, but continue cleaning up the rest. */ | |
341 | sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__); | |
342 | continue; | |
343 | } | |
344 | if (!(ctx = sdi->priv)) { | |
345 | /* Log error, but continue cleaning up the rest. */ | |
346 | sr_err("hantek-dso: %s: sdi->priv was NULL, continuing", __func__); | |
347 | continue; | |
348 | } | |
349 | dso_close(sdi); | |
350 | sr_usb_dev_inst_free(ctx->usb); | |
a370ef19 BV |
351 | g_free(ctx->triggersource); |
352 | ||
3b533202 BV |
353 | sr_dev_inst_free(sdi); |
354 | } | |
355 | ||
356 | g_slist_free(dev_insts); | |
357 | dev_insts = NULL; | |
358 | ||
359 | if (usb_context) | |
360 | libusb_exit(usb_context); | |
361 | usb_context = NULL; | |
362 | ||
363 | return SR_OK; | |
364 | } | |
365 | ||
62bb8840 | 366 | static const void *hw_dev_info_get(int dev_index, int dev_info_id) |
3b533202 BV |
367 | { |
368 | struct sr_dev_inst *sdi; | |
62bb8840 | 369 | const void *info; |
3b533202 BV |
370 | uint64_t tmp; |
371 | ||
372 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
373 | return NULL; | |
3b533202 BV |
374 | |
375 | info = NULL; | |
376 | switch (dev_info_id) { | |
377 | case SR_DI_INST: | |
378 | info = sdi; | |
379 | break; | |
380 | case SR_DI_NUM_PROBES: | |
88a13f30 | 381 | info = GINT_TO_POINTER(NUM_PROBES); |
3b533202 BV |
382 | break; |
383 | case SR_DI_PROBE_NAMES: | |
384 | info = probe_names; | |
385 | break; | |
a370ef19 BV |
386 | case SR_DI_BUFFERSIZES: |
387 | info = buffersizes; | |
388 | break; | |
389 | case SR_DI_TIMEBASES: | |
390 | info = timebases; | |
391 | break; | |
392 | case SR_DI_TRIGGER_SOURCES: | |
393 | info = trigger_sources; | |
394 | break; | |
ebb781a6 BV |
395 | case SR_DI_FILTERS: |
396 | info = filter_targets; | |
397 | break; | |
313deed2 BV |
398 | case SR_DI_VDIVS: |
399 | info = vdivs; | |
400 | break; | |
4a090d72 BV |
401 | case SR_DI_COUPLING: |
402 | info = coupling; | |
403 | break; | |
3b533202 BV |
404 | /* TODO remove this */ |
405 | case SR_DI_CUR_SAMPLERATE: | |
406 | info = &tmp; | |
407 | break; | |
408 | } | |
409 | ||
410 | return info; | |
411 | } | |
412 | ||
62bb8840 | 413 | static int hw_dev_status_get(int dev_index) |
3b533202 BV |
414 | { |
415 | struct sr_dev_inst *sdi; | |
416 | ||
62bb8840 | 417 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
3b533202 BV |
418 | return SR_ST_NOT_FOUND; |
419 | ||
420 | return sdi->status; | |
421 | } | |
422 | ||
62bb8840 | 423 | static const int *hw_hwcap_get_all(void) |
3b533202 | 424 | { |
62bb8840 | 425 | return hwcaps; |
3b533202 BV |
426 | } |
427 | ||
af36b809 | 428 | static int hw_dev_config_set(int dev_index, int hwcap, const void *value) |
3b533202 BV |
429 | { |
430 | struct sr_dev_inst *sdi; | |
431 | struct context *ctx; | |
a370ef19 BV |
432 | struct sr_rational tmp_rat; |
433 | float tmp_float; | |
434 | uint64_t tmp_u64; | |
435 | int ret, i; | |
4a090d72 | 436 | char **targets; |
3b533202 BV |
437 | |
438 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
439 | return SR_ERR; | |
440 | ||
441 | if (sdi->status != SR_ST_ACTIVE) | |
442 | return SR_ERR; | |
443 | ||
a370ef19 | 444 | ret = SR_OK; |
3b533202 BV |
445 | ctx = sdi->priv; |
446 | switch (hwcap) { | |
ae88b97b | 447 | case SR_HWCAP_LIMIT_FRAMES: |
62bb8840 | 448 | ctx->limit_frames = *(const uint64_t *)value; |
ae88b97b | 449 | break; |
3b533202 | 450 | case SR_HWCAP_PROBECONFIG: |
62bb8840 | 451 | ret = configure_probes(ctx, (const GSList *)value); |
3b533202 | 452 | break; |
a370ef19 | 453 | case SR_HWCAP_TRIGGER_SLOPE: |
62bb8840 | 454 | tmp_u64 = *(const int *)value; |
a370ef19 BV |
455 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) |
456 | ret = SR_ERR_ARG; | |
457 | ctx->triggerslope = tmp_u64; | |
458 | break; | |
459 | case SR_HWCAP_HORIZ_TRIGGERPOS: | |
62bb8840 | 460 | tmp_float = *(const float *)value; |
a370ef19 BV |
461 | if (tmp_float < 0.0 || tmp_float > 1.0) { |
462 | sr_err("hantek-dso: trigger position should be between 0.0 and 1.0"); | |
3b533202 | 463 | ret = SR_ERR_ARG; |
a370ef19 BV |
464 | } else |
465 | ctx->triggerposition = tmp_float; | |
466 | break; | |
467 | case SR_HWCAP_BUFFERSIZE: | |
62bb8840 | 468 | tmp_u64 = *(const int *)value; |
a370ef19 BV |
469 | for (i = 0; buffersizes[i]; i++) { |
470 | if (buffersizes[i] == tmp_u64) { | |
471 | ctx->framesize = tmp_u64; | |
472 | break; | |
473 | } | |
474 | } | |
475 | if (buffersizes[i] == 0) | |
476 | ret = SR_ERR_ARG; | |
477 | break; | |
478 | case SR_HWCAP_TIMEBASE: | |
62bb8840 | 479 | tmp_rat = *(const struct sr_rational *)value; |
a370ef19 BV |
480 | for (i = 0; timebases[i].p && timebases[i].q; i++) { |
481 | if (timebases[i].p == tmp_rat.p | |
482 | && timebases[i].q == tmp_rat.q) { | |
483 | ctx->timebase = i; | |
484 | break; | |
485 | } | |
486 | } | |
487 | if (timebases[i].p == 0 && timebases[i].q == 0) | |
488 | ret = SR_ERR_ARG; | |
489 | break; | |
490 | case SR_HWCAP_TRIGGER_SOURCE: | |
a370ef19 | 491 | for (i = 0; trigger_sources[i]; i++) { |
4a090d72 BV |
492 | if (!strcmp(value, trigger_sources[i])) { |
493 | ctx->triggersource = g_strdup(value); | |
a370ef19 BV |
494 | break; |
495 | } | |
496 | } | |
497 | if (trigger_sources[i] == 0) | |
498 | ret = SR_ERR_ARG; | |
499 | break; | |
ebb781a6 BV |
500 | case SR_HWCAP_FILTER: |
501 | ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0; | |
502 | targets = g_strsplit(value, ",", 0); | |
503 | for (i = 0; targets[i]; i++) { | |
504 | if (targets[i] == '\0') | |
505 | /* Empty filter string can be used to clear them all. */ | |
506 | ; | |
507 | else if (!strcmp(targets[i], "CH1")) | |
508 | ctx->filter_ch1 = TRUE; | |
509 | else if (!strcmp(targets[i], "CH2")) | |
510 | ctx->filter_ch2 = TRUE; | |
511 | else if (!strcmp(targets[i], "TRIGGER")) | |
512 | ctx->filter_trigger = TRUE; | |
513 | else { | |
514 | sr_err("invalid filter target %s", targets[i]); | |
515 | ret = SR_ERR_ARG; | |
516 | } | |
517 | } | |
518 | g_strfreev(targets); | |
519 | break; | |
313deed2 BV |
520 | case SR_HWCAP_VDIV: |
521 | /* TODO not supporting vdiv per channel yet */ | |
62bb8840 | 522 | tmp_rat = *(const struct sr_rational *)value; |
313deed2 BV |
523 | for (i = 0; vdivs[i].p && vdivs[i].q; i++) { |
524 | if (vdivs[i].p == tmp_rat.p | |
525 | && vdivs[i].q == tmp_rat.q) { | |
526 | ctx->voltage_ch1 = i; | |
527 | ctx->voltage_ch2 = i; | |
528 | break; | |
529 | } | |
530 | } | |
531 | if (vdivs[i].p == 0 && vdivs[i].q == 0) | |
532 | ret = SR_ERR_ARG; | |
533 | break; | |
b58fbd99 BV |
534 | case SR_HWCAP_COUPLING: |
535 | /* TODO not supporting coupling per channel yet */ | |
b58fbd99 | 536 | for (i = 0; coupling[i]; i++) { |
4a090d72 | 537 | if (!strcmp(value, coupling[i])) { |
b58fbd99 BV |
538 | ctx->coupling_ch1 = i; |
539 | ctx->coupling_ch2 = i; | |
540 | break; | |
541 | } | |
542 | } | |
543 | if (coupling[i] == 0) | |
544 | ret = SR_ERR_ARG; | |
545 | break; | |
3b533202 BV |
546 | default: |
547 | ret = SR_ERR_ARG; | |
548 | } | |
549 | ||
550 | return ret; | |
551 | } | |
552 | ||
e749a8cb BV |
553 | static void send_chunk(struct context *ctx, unsigned char *buf, |
554 | int num_samples) | |
3b533202 BV |
555 | { |
556 | struct sr_datafeed_packet packet; | |
557 | struct sr_datafeed_analog analog; | |
c5841b28 | 558 | float ch1, ch2, range; |
6e71ef3b | 559 | int num_probes, data_offset, i; |
3b533202 | 560 | |
6e71ef3b | 561 | num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; |
3b533202 BV |
562 | packet.type = SR_DF_ANALOG; |
563 | packet.payload = &analog; | |
6e71ef3b | 564 | /* TODO: support for 5xxx series 9-bit samples */ |
e749a8cb | 565 | analog.num_samples = num_samples; |
9956f285 UH |
566 | analog.mq = SR_MQ_VOLTAGE; |
567 | analog.unit = SR_UNIT_VOLT; | |
6e71ef3b BV |
568 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); |
569 | data_offset = 0; | |
3b533202 | 570 | for (i = 0; i < analog.num_samples; i++) { |
6e71ef3b BV |
571 | /* The device always sends data for both channels. If a channel |
572 | * is disabled, it contains a copy of the enabled channel's | |
573 | * data. However, we only send the requested channels to the bus. | |
c5841b28 BV |
574 | * |
575 | * Voltage values are encoded as a value 0-255 (0-512 on the 5200*), | |
576 | * where the value is a point in the range represented by the vdiv | |
577 | * setting. There are 8 vertical divs, so e.g. 500mV/div represents | |
578 | * 4V peak-to-peak where 0 = -2V and 255 = +2V. | |
6e71ef3b | 579 | */ |
3b533202 | 580 | /* TODO: support for 5xxx series 9-bit samples */ |
6e71ef3b | 581 | if (ctx->ch1_enabled) { |
c5841b28 | 582 | range = ((float)vdivs[ctx->voltage_ch1].p / vdivs[ctx->voltage_ch1].q) * 8; |
e749a8cb | 583 | ch1 = range / 255 * *(buf + i * 2 + 1); |
c5841b28 BV |
584 | /* Value is centered around 0V. */ |
585 | ch1 -= range / 2; | |
6e71ef3b BV |
586 | analog.data[data_offset++] = ch1; |
587 | } | |
588 | if (ctx->ch2_enabled) { | |
c5841b28 | 589 | range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8; |
e749a8cb | 590 | ch2 = range / 255 * *(buf + i * 2); |
c5841b28 | 591 | ch2 -= range / 2; |
6e71ef3b BV |
592 | analog.data[data_offset++] = ch2; |
593 | } | |
3b533202 | 594 | } |
e749a8cb BV |
595 | sr_session_send(ctx->cb_data, &packet); |
596 | ||
597 | } | |
598 | ||
599 | /* Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
600 | * Only channel data comes in asynchronously, and all transfers for this are | |
601 | * queued up beforehand, so this just needs so chuck the incoming data onto | |
602 | * the libsigrok session bus. | |
603 | */ | |
604 | static void receive_transfer(struct libusb_transfer *transfer) | |
605 | { | |
606 | struct sr_datafeed_packet packet; | |
607 | struct context *ctx; | |
608 | int num_samples, pre; | |
609 | ||
610 | ctx = transfer->user_data; | |
611 | sr_dbg("hantek-dso: receive_transfer(): status %d received %d bytes", | |
612 | transfer->status, transfer->actual_length); | |
613 | ||
614 | if (transfer->actual_length == 0) | |
615 | /* Nothing to send to the bus. */ | |
616 | return; | |
617 | ||
618 | num_samples = transfer->actual_length / 2; | |
619 | ||
620 | sr_dbg("hantek-dso: got %d-%d/%d samples in frame", ctx->samp_received + 1, | |
621 | ctx->samp_received + num_samples, ctx->framesize); | |
622 | ||
623 | /* The device always sends a full frame, but the beginning of the frame | |
624 | * doesn't represent the trigger point. The offset at which the trigger | |
625 | * happened came in with the capture state, so we need to start sending | |
626 | * from there up the session bus. The samples in the frame buffer before | |
627 | * that trigger point came after the end of the device's frame buffer was | |
628 | * reached, and it wrapped around to overwrite up until the trigger point. | |
629 | */ | |
630 | if (ctx->samp_received < ctx->trigger_offset) { | |
631 | /* Trigger point not yet reached. */ | |
632 | if (ctx->samp_received + num_samples < ctx->trigger_offset) { | |
633 | /* The entire chunk is before the trigger point. */ | |
634 | memcpy(ctx->framebuf + ctx->samp_buffered * 2, | |
635 | transfer->buffer, num_samples * 2); | |
636 | ctx->samp_buffered += num_samples; | |
637 | } else { | |
638 | /* This chunk hits or overruns the trigger point. | |
639 | * Store the part before the trigger fired, and | |
640 | * send the rest up to the session bus. */ | |
641 | pre = ctx->trigger_offset - ctx->samp_received; | |
642 | memcpy(ctx->framebuf + ctx->samp_buffered * 2, | |
643 | transfer->buffer, pre * 2); | |
644 | ctx->samp_buffered += pre; | |
645 | ||
646 | /* The rest of this chunk starts with the trigger point. */ | |
647 | sr_dbg("hantek-dso: reached trigger point, %d samples buffered", | |
648 | ctx->samp_buffered); | |
649 | ||
650 | /* Avoid the corner case where the chunk ended at | |
651 | * exactly the trigger point. */ | |
652 | if (num_samples > pre) | |
653 | send_chunk(ctx, transfer->buffer + pre * 2, | |
654 | num_samples - pre); | |
655 | } | |
656 | } else { | |
657 | /* Already past the trigger point, just send it all out. */ | |
658 | send_chunk(ctx, transfer->buffer, | |
659 | num_samples); | |
660 | } | |
661 | ||
662 | ctx->samp_received += num_samples; | |
663 | ||
664 | /* Everything in this transfer was either copied to the buffer or | |
665 | * sent to the session bus. */ | |
3b533202 BV |
666 | g_free(transfer->buffer); |
667 | libusb_free_transfer(transfer); | |
3b533202 | 668 | |
e749a8cb BV |
669 | if (ctx->samp_received >= ctx->framesize) { |
670 | /* That was the last chunk in this frame. Send the buffered | |
671 | * pre-trigger samples out now, in one big chunk. */ | |
672 | sr_dbg("hantek-dso: end of frame, sending %d pre-trigger buffered samples", | |
673 | ctx->samp_buffered); | |
674 | send_chunk(ctx, ctx->framebuf, ctx->samp_buffered); | |
675 | ||
676 | /* Mark the end of this frame. */ | |
ae88b97b BV |
677 | packet.type = SR_DF_FRAME_END; |
678 | sr_session_send(ctx->cb_data, &packet); | |
679 | ||
680 | if (ctx->limit_frames && ++ctx->num_frames == ctx->limit_frames) { | |
681 | /* Terminate session */ | |
6e71ef3b | 682 | /* TODO: don't leave pending USB transfers hanging */ |
ae88b97b BV |
683 | packet.type = SR_DF_END; |
684 | sr_session_send(ctx->cb_data, &packet); | |
685 | } else { | |
ae88b97b BV |
686 | ctx->dev_state = NEW_CAPTURE; |
687 | } | |
688 | } | |
689 | ||
3b533202 BV |
690 | } |
691 | ||
692 | static int handle_event(int fd, int revents, void *cb_data) | |
693 | { | |
ae88b97b | 694 | struct sr_datafeed_packet packet; |
3b533202 BV |
695 | struct timeval tv; |
696 | struct context *ctx; | |
e749a8cb | 697 | int num_probes; |
6e6eeff4 BV |
698 | uint32_t trigger_offset; |
699 | uint8_t capturestate; | |
3b533202 BV |
700 | |
701 | /* Avoid compiler warnings. */ | |
702 | (void)fd; | |
703 | (void)revents; | |
704 | ||
705 | /* Always handle pending libusb events. */ | |
706 | tv.tv_sec = tv.tv_usec = 0; | |
707 | libusb_handle_events_timeout(usb_context, &tv); | |
708 | ||
709 | ctx = cb_data; | |
710 | /* TODO: ugh */ | |
711 | if (ctx->dev_state == NEW_CAPTURE) { | |
712 | if (dso_capture_start(ctx) != SR_OK) | |
713 | return TRUE; | |
714 | if (dso_enable_trigger(ctx) != SR_OK) | |
715 | return TRUE; | |
a370ef19 BV |
716 | // if (dso_force_trigger(ctx) != SR_OK) |
717 | // return TRUE; | |
3b533202 BV |
718 | sr_dbg("hantek-dso: successfully requested next chunk"); |
719 | ctx->dev_state = CAPTURE; | |
720 | return TRUE; | |
721 | } | |
722 | if (ctx->dev_state != CAPTURE) | |
723 | return TRUE; | |
724 | ||
6e6eeff4 | 725 | if ((dso_get_capturestate(ctx, &capturestate, &trigger_offset)) != SR_OK) |
3b533202 | 726 | return TRUE; |
3b533202 BV |
727 | |
728 | sr_dbg("hantek-dso: capturestate %d", capturestate); | |
6e6eeff4 | 729 | sr_dbg("hantek-dso: trigger offset 0x%.6x", trigger_offset); |
3b533202 BV |
730 | switch (capturestate) { |
731 | case CAPTURE_EMPTY: | |
732 | if (++ctx->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
733 | ctx->capture_empty_count = 0; | |
734 | if (dso_capture_start(ctx) != SR_OK) | |
735 | break; | |
736 | if (dso_enable_trigger(ctx) != SR_OK) | |
737 | break; | |
a370ef19 BV |
738 | // if (dso_force_trigger(ctx) != SR_OK) |
739 | // break; | |
3b533202 BV |
740 | sr_dbg("hantek-dso: successfully requested next chunk"); |
741 | } | |
742 | break; | |
743 | case CAPTURE_FILLING: | |
744 | /* no data yet */ | |
745 | break; | |
746 | case CAPTURE_READY_8BIT: | |
e749a8cb BV |
747 | /* Remember where in the captured frame the trigger is. */ |
748 | ctx->trigger_offset = trigger_offset; | |
749 | ||
750 | num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; | |
751 | ctx->framebuf = g_try_malloc(ctx->framesize * num_probes * 2); | |
752 | ctx->samp_buffered = ctx->samp_received = 0; | |
753 | ||
3b533202 BV |
754 | /* Tell the scope to send us the first frame. */ |
755 | if (dso_get_channeldata(ctx, receive_transfer) != SR_OK) | |
756 | break; | |
ae88b97b BV |
757 | |
758 | /* Don't hit the state machine again until we're done fetching | |
759 | * the data we just told the scope to send. | |
760 | */ | |
3b533202 | 761 | ctx->dev_state = FETCH_DATA; |
ae88b97b BV |
762 | |
763 | /* Tell the frontend a new frame is on the way. */ | |
764 | packet.type = SR_DF_FRAME_BEGIN; | |
765 | sr_session_send(cb_data, &packet); | |
3b533202 BV |
766 | break; |
767 | case CAPTURE_READY_9BIT: | |
768 | /* TODO */ | |
769 | sr_err("not yet supported"); | |
770 | break; | |
771 | case CAPTURE_TIMEOUT: | |
772 | /* Doesn't matter, we'll try again next time. */ | |
773 | break; | |
774 | default: | |
775 | sr_dbg("unknown capture state"); | |
776 | } | |
777 | ||
778 | return TRUE; | |
779 | } | |
780 | ||
62bb8840 | 781 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
3b533202 BV |
782 | { |
783 | const struct libusb_pollfd **lupfd; | |
784 | struct sr_datafeed_packet packet; | |
785 | struct sr_datafeed_header header; | |
786 | struct sr_datafeed_meta_analog meta; | |
787 | struct sr_dev_inst *sdi; | |
788 | struct context *ctx; | |
789 | int i; | |
790 | ||
62bb8840 | 791 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
3b533202 BV |
792 | return SR_ERR; |
793 | ||
794 | if (sdi->status != SR_ST_ACTIVE) | |
795 | return SR_ERR; | |
796 | ||
797 | ctx = sdi->priv; | |
798 | ctx->cb_data = cb_data; | |
799 | ||
800 | if (dso_init(ctx) != SR_OK) | |
801 | return SR_ERR; | |
802 | ||
803 | if (dso_capture_start(ctx) != SR_OK) | |
804 | return SR_ERR; | |
805 | ||
806 | ctx->dev_state = CAPTURE; | |
807 | lupfd = libusb_get_pollfds(usb_context); | |
808 | for (i = 0; lupfd[i]; i++) | |
809 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event, | |
810 | ctx); | |
811 | free(lupfd); | |
812 | ||
813 | /* Send header packet to the session bus. */ | |
814 | packet.type = SR_DF_HEADER; | |
815 | packet.payload = (unsigned char *)&header; | |
816 | header.feed_version = 1; | |
817 | gettimeofday(&header.starttime, NULL); | |
818 | sr_session_send(cb_data, &packet); | |
819 | ||
820 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
821 | packet.type = SR_DF_META_ANALOG; | |
822 | packet.payload = &meta; | |
88a13f30 | 823 | meta.num_probes = NUM_PROBES; |
3b533202 BV |
824 | sr_session_send(cb_data, &packet); |
825 | ||
826 | return SR_OK; | |
827 | } | |
828 | ||
829 | /* TODO: doesn't really cancel pending transfers so they might come in after | |
830 | * SR_DF_END is sent. | |
831 | */ | |
62bb8840 | 832 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) |
3b533202 BV |
833 | { |
834 | struct sr_datafeed_packet packet; | |
835 | struct sr_dev_inst *sdi; | |
836 | struct context *ctx; | |
837 | ||
62bb8840 | 838 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) |
3b533202 BV |
839 | return SR_ERR; |
840 | ||
841 | if (sdi->status != SR_ST_ACTIVE) | |
842 | return SR_ERR; | |
843 | ||
844 | ctx = sdi->priv; | |
845 | ctx->dev_state = IDLE; | |
846 | ||
847 | packet.type = SR_DF_END; | |
62bb8840 | 848 | sr_session_send(cb_data, &packet); |
3b533202 BV |
849 | |
850 | return SR_OK; | |
851 | } | |
852 | ||
62bb8840 | 853 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { |
3b533202 BV |
854 | .name = "hantek-dso", |
855 | .longname = "Hantek DSO", | |
856 | .api_version = 1, | |
857 | .init = hw_init, | |
858 | .cleanup = hw_cleanup, | |
859 | .dev_open = hw_dev_open, | |
860 | .dev_close = hw_dev_close, | |
62bb8840 UH |
861 | .dev_info_get = hw_dev_info_get, |
862 | .dev_status_get = hw_dev_status_get, | |
863 | .hwcap_get_all = hw_hwcap_get_all, | |
3b533202 | 864 | .dev_config_set = hw_dev_config_set, |
62bb8840 UH |
865 | .dev_acquisition_start = hw_dev_acquisition_start, |
866 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
3b533202 | 867 | }; |