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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 | 147 | SR_PRIV libusb_context *usb_context = NULL; |
982947f7 BV |
148 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info; |
149 | static struct sr_dev_driver *hdi = &hantek_dso_driver_info; | |
3b533202 | 150 | |
62bb8840 | 151 | static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof) |
3b533202 BV |
152 | { |
153 | struct sr_dev_inst *sdi; | |
154 | struct context *ctx; | |
155 | ||
156 | sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING, | |
88a13f30 | 157 | prof->vendor, prof->model, NULL); |
3b533202 BV |
158 | if (!sdi) |
159 | return NULL; | |
160 | ||
161 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { | |
162 | sr_err("hantek-dso: ctx malloc failed"); | |
163 | return NULL; | |
164 | } | |
165 | ctx->profile = prof; | |
166 | ctx->dev_state = IDLE; | |
167 | ctx->timebase = DEFAULT_TIMEBASE; | |
168 | ctx->ch1_enabled = TRUE; | |
169 | ctx->ch2_enabled = TRUE; | |
170 | ctx->voltage_ch1 = DEFAULT_VOLTAGE; | |
171 | ctx->voltage_ch2 = DEFAULT_VOLTAGE; | |
172 | ctx->coupling_ch1 = DEFAULT_COUPLING; | |
173 | ctx->coupling_ch2 = DEFAULT_COUPLING; | |
174 | ctx->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
175 | ctx->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
176 | ctx->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
3b533202 BV |
177 | ctx->framesize = DEFAULT_FRAMESIZE; |
178 | ctx->triggerslope = SLOPE_POSITIVE; | |
a370ef19 | 179 | ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); |
3b533202 BV |
180 | ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; |
181 | sdi->priv = ctx; | |
982947f7 | 182 | hdi->instances = g_slist_append(hdi->instances, sdi); |
3b533202 BV |
183 | |
184 | return sdi; | |
185 | } | |
186 | ||
62bb8840 | 187 | static int configure_probes(struct context *ctx, const GSList *probes) |
3b533202 | 188 | { |
62bb8840 UH |
189 | const struct sr_probe *probe; |
190 | const GSList *l; | |
3b533202 | 191 | |
6e71ef3b | 192 | ctx->ch1_enabled = ctx->ch2_enabled = FALSE; |
3b533202 BV |
193 | for (l = probes; l; l = l->next) { |
194 | probe = (struct sr_probe *)l->data; | |
6e71ef3b | 195 | if (probe->index == 1) |
3b533202 | 196 | ctx->ch1_enabled = probe->enabled; |
6e71ef3b | 197 | else if (probe->index == 2) |
3b533202 BV |
198 | ctx->ch2_enabled = probe->enabled; |
199 | } | |
200 | ||
201 | return SR_OK; | |
202 | } | |
203 | ||
39cfdd75 BV |
204 | /* Properly close and free all devices. */ |
205 | static void clear_instances(void) | |
206 | { | |
207 | struct sr_dev_inst *sdi; | |
208 | struct context *ctx; | |
209 | GSList *l; | |
210 | ||
211 | for (l = hdi->instances; l; l = l->next) { | |
212 | if (!(sdi = l->data)) { | |
213 | /* Log error, but continue cleaning up the rest. */ | |
214 | sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__); | |
215 | continue; | |
216 | } | |
217 | if (!(ctx = sdi->priv)) { | |
218 | /* Log error, but continue cleaning up the rest. */ | |
219 | sr_err("hantek-dso: %s: sdi->priv was NULL, continuing", __func__); | |
220 | continue; | |
221 | } | |
222 | dso_close(sdi); | |
223 | sr_usb_dev_inst_free(ctx->usb); | |
224 | g_free(ctx->triggersource); | |
225 | ||
226 | sr_dev_inst_free(sdi); | |
227 | } | |
228 | ||
229 | g_slist_free(hdi->instances); | |
230 | hdi->instances = NULL; | |
231 | ||
232 | } | |
233 | ||
40dda2c3 | 234 | static int hw_init(void) |
61136ea6 BV |
235 | { |
236 | ||
237 | if (libusb_init(&usb_context) != 0) { | |
238 | sr_err("hantek-dso: Failed to initialize USB."); | |
239 | return SR_ERR; | |
240 | } | |
241 | ||
242 | return SR_OK; | |
243 | } | |
244 | ||
39cfdd75 | 245 | static GSList *hw_scan(GSList *options) |
3b533202 BV |
246 | { |
247 | struct sr_dev_inst *sdi; | |
62bb8840 | 248 | const struct dso_profile *prof; |
3b533202 | 249 | struct context *ctx; |
39cfdd75 BV |
250 | GSList *devices; |
251 | struct libusb_device_descriptor des; | |
3b533202 | 252 | libusb_device **devlist; |
61136ea6 | 253 | int devcnt, ret, i, j; |
3b533202 | 254 | |
39cfdd75 | 255 | (void)options; |
3b533202 | 256 | devcnt = 0; |
39cfdd75 BV |
257 | devices = 0; |
258 | hdi->instances = NULL; | |
259 | ||
260 | clear_instances(); | |
261 | ||
262 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
3b533202 BV |
263 | libusb_get_device_list(usb_context, &devlist); |
264 | for (i = 0; devlist[i]; i++) { | |
61136ea6 BV |
265 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { |
266 | sr_err("hantek-dso: failed to get device descriptor: %d", ret); | |
3b533202 BV |
267 | continue; |
268 | } | |
269 | ||
270 | prof = NULL; | |
271 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
272 | if (des.idVendor == dev_profiles[j].orig_vid | |
273 | && des.idProduct == dev_profiles[j].orig_pid) { | |
274 | /* Device matches the pre-firmware profile. */ | |
275 | prof = &dev_profiles[j]; | |
276 | sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model); | |
277 | sdi = dso_dev_new(devcnt, prof); | |
39cfdd75 | 278 | devices = g_slist_append(devices, sdi); |
3b533202 BV |
279 | ctx = sdi->priv; |
280 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
281 | prof->firmware) == SR_OK) | |
282 | /* Remember when the firmware on this device was updated */ | |
fc8fe3e3 | 283 | ctx->fw_updated = g_get_monotonic_time(); |
3b533202 BV |
284 | else |
285 | sr_err("hantek-dso: firmware upload failed for " | |
286 | "device %d", devcnt); | |
287 | /* Dummy USB address of 0xff will get overwritten later. */ | |
288 | ctx->usb = sr_usb_dev_inst_new( | |
289 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
290 | devcnt++; | |
291 | break; | |
292 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
293 | && des.idProduct == dev_profiles[j].fw_pid) { | |
294 | /* Device matches the post-firmware profile. */ | |
295 | prof = &dev_profiles[j]; | |
296 | sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model); | |
297 | sdi = dso_dev_new(devcnt, prof); | |
298 | sdi->status = SR_ST_INACTIVE; | |
39cfdd75 | 299 | devices = g_slist_append(devices, sdi); |
3b533202 BV |
300 | ctx = sdi->priv; |
301 | ctx->usb = sr_usb_dev_inst_new( | |
302 | libusb_get_bus_number(devlist[i]), | |
303 | libusb_get_device_address(devlist[i]), NULL); | |
304 | devcnt++; | |
305 | break; | |
306 | } | |
307 | } | |
308 | if (!prof) | |
309 | /* not a supported VID/PID */ | |
310 | continue; | |
311 | } | |
312 | libusb_free_device_list(devlist, 1); | |
313 | ||
39cfdd75 | 314 | return devices; |
3b533202 BV |
315 | } |
316 | ||
317 | static int hw_dev_open(int dev_index) | |
318 | { | |
3b533202 BV |
319 | struct sr_dev_inst *sdi; |
320 | struct context *ctx; | |
fc8fe3e3 BV |
321 | int64_t timediff_us, timediff_ms; |
322 | int err; | |
3b533202 | 323 | |
982947f7 | 324 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
325 | return SR_ERR_ARG; |
326 | ctx = sdi->priv; | |
327 | ||
328 | /* | |
fc8fe3e3 | 329 | * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS |
3b533202 BV |
330 | * for the FX2 to renumerate |
331 | */ | |
fc8fe3e3 BV |
332 | err = SR_ERR; |
333 | if (ctx->fw_updated > 0) { | |
3b533202 BV |
334 | sr_info("hantek-dso: waiting for device to reset"); |
335 | /* takes at least 300ms for the FX2 to be gone from the USB bus */ | |
336 | g_usleep(300 * 1000); | |
fc8fe3e3 BV |
337 | timediff_ms = 0; |
338 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
3b533202 BV |
339 | if ((err = dso_open(dev_index)) == SR_OK) |
340 | break; | |
341 | g_usleep(100 * 1000); | |
fc8fe3e3 BV |
342 | timediff_us = g_get_monotonic_time() - ctx->fw_updated; |
343 | timediff_ms = timediff_us / 1000; | |
99f5d45e | 344 | sr_spew("hantek-dso: waited %" PRIi64 " ms", timediff_ms); |
3b533202 | 345 | } |
fc8fe3e3 | 346 | sr_info("hantek-dso: device came back after %d ms", timediff_ms); |
3b533202 BV |
347 | } else { |
348 | err = dso_open(dev_index); | |
349 | } | |
350 | ||
351 | if (err != SR_OK) { | |
352 | sr_err("hantek-dso: unable to open device"); | |
353 | return SR_ERR; | |
354 | } | |
355 | ||
356 | err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); | |
357 | if (err != 0) { | |
358 | sr_err("hantek-dso: Unable to claim interface: %d", err); | |
359 | return SR_ERR; | |
360 | } | |
361 | ||
362 | return SR_OK; | |
363 | } | |
364 | ||
365 | static int hw_dev_close(int dev_index) | |
366 | { | |
367 | struct sr_dev_inst *sdi; | |
368 | ||
982947f7 | 369 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
370 | return SR_ERR_ARG; |
371 | ||
372 | dso_close(sdi); | |
373 | ||
374 | return SR_OK; | |
375 | } | |
376 | ||
377 | static int hw_cleanup(void) | |
378 | { | |
3b533202 | 379 | |
39cfdd75 | 380 | clear_instances(); |
3b533202 BV |
381 | |
382 | if (usb_context) | |
383 | libusb_exit(usb_context); | |
384 | usb_context = NULL; | |
385 | ||
386 | return SR_OK; | |
387 | } | |
388 | ||
62bb8840 | 389 | static const void *hw_dev_info_get(int dev_index, int dev_info_id) |
3b533202 BV |
390 | { |
391 | struct sr_dev_inst *sdi; | |
62bb8840 | 392 | const void *info; |
3b533202 BV |
393 | uint64_t tmp; |
394 | ||
982947f7 | 395 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 | 396 | return NULL; |
3b533202 BV |
397 | |
398 | info = NULL; | |
399 | switch (dev_info_id) { | |
400 | case SR_DI_INST: | |
401 | info = sdi; | |
402 | break; | |
403 | case SR_DI_NUM_PROBES: | |
88a13f30 | 404 | info = GINT_TO_POINTER(NUM_PROBES); |
3b533202 BV |
405 | break; |
406 | case SR_DI_PROBE_NAMES: | |
407 | info = probe_names; | |
408 | break; | |
a370ef19 BV |
409 | case SR_DI_BUFFERSIZES: |
410 | info = buffersizes; | |
411 | break; | |
412 | case SR_DI_TIMEBASES: | |
413 | info = timebases; | |
414 | break; | |
415 | case SR_DI_TRIGGER_SOURCES: | |
416 | info = trigger_sources; | |
417 | break; | |
ebb781a6 BV |
418 | case SR_DI_FILTERS: |
419 | info = filter_targets; | |
420 | break; | |
313deed2 BV |
421 | case SR_DI_VDIVS: |
422 | info = vdivs; | |
423 | break; | |
4a090d72 BV |
424 | case SR_DI_COUPLING: |
425 | info = coupling; | |
426 | break; | |
3b533202 BV |
427 | /* TODO remove this */ |
428 | case SR_DI_CUR_SAMPLERATE: | |
429 | info = &tmp; | |
430 | break; | |
431 | } | |
432 | ||
433 | return info; | |
434 | } | |
435 | ||
62bb8840 | 436 | static int hw_dev_status_get(int dev_index) |
3b533202 BV |
437 | { |
438 | struct sr_dev_inst *sdi; | |
439 | ||
982947f7 | 440 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
441 | return SR_ST_NOT_FOUND; |
442 | ||
443 | return sdi->status; | |
444 | } | |
445 | ||
62bb8840 | 446 | static const int *hw_hwcap_get_all(void) |
3b533202 | 447 | { |
62bb8840 | 448 | return hwcaps; |
3b533202 BV |
449 | } |
450 | ||
af36b809 | 451 | static int hw_dev_config_set(int dev_index, int hwcap, const void *value) |
3b533202 BV |
452 | { |
453 | struct sr_dev_inst *sdi; | |
454 | struct context *ctx; | |
a370ef19 BV |
455 | struct sr_rational tmp_rat; |
456 | float tmp_float; | |
457 | uint64_t tmp_u64; | |
458 | int ret, i; | |
4a090d72 | 459 | char **targets; |
3b533202 | 460 | |
982947f7 | 461 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
462 | return SR_ERR; |
463 | ||
464 | if (sdi->status != SR_ST_ACTIVE) | |
465 | return SR_ERR; | |
466 | ||
a370ef19 | 467 | ret = SR_OK; |
3b533202 BV |
468 | ctx = sdi->priv; |
469 | switch (hwcap) { | |
ae88b97b | 470 | case SR_HWCAP_LIMIT_FRAMES: |
62bb8840 | 471 | ctx->limit_frames = *(const uint64_t *)value; |
ae88b97b | 472 | break; |
3b533202 | 473 | case SR_HWCAP_PROBECONFIG: |
62bb8840 | 474 | ret = configure_probes(ctx, (const GSList *)value); |
3b533202 | 475 | break; |
a370ef19 | 476 | case SR_HWCAP_TRIGGER_SLOPE: |
62bb8840 | 477 | tmp_u64 = *(const int *)value; |
a370ef19 BV |
478 | if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE) |
479 | ret = SR_ERR_ARG; | |
480 | ctx->triggerslope = tmp_u64; | |
481 | break; | |
482 | case SR_HWCAP_HORIZ_TRIGGERPOS: | |
62bb8840 | 483 | tmp_float = *(const float *)value; |
a370ef19 BV |
484 | if (tmp_float < 0.0 || tmp_float > 1.0) { |
485 | sr_err("hantek-dso: trigger position should be between 0.0 and 1.0"); | |
3b533202 | 486 | ret = SR_ERR_ARG; |
a370ef19 BV |
487 | } else |
488 | ctx->triggerposition = tmp_float; | |
489 | break; | |
490 | case SR_HWCAP_BUFFERSIZE: | |
62bb8840 | 491 | tmp_u64 = *(const int *)value; |
a370ef19 BV |
492 | for (i = 0; buffersizes[i]; i++) { |
493 | if (buffersizes[i] == tmp_u64) { | |
494 | ctx->framesize = tmp_u64; | |
495 | break; | |
496 | } | |
497 | } | |
498 | if (buffersizes[i] == 0) | |
499 | ret = SR_ERR_ARG; | |
500 | break; | |
501 | case SR_HWCAP_TIMEBASE: | |
62bb8840 | 502 | tmp_rat = *(const struct sr_rational *)value; |
a370ef19 BV |
503 | for (i = 0; timebases[i].p && timebases[i].q; i++) { |
504 | if (timebases[i].p == tmp_rat.p | |
505 | && timebases[i].q == tmp_rat.q) { | |
506 | ctx->timebase = i; | |
507 | break; | |
508 | } | |
509 | } | |
510 | if (timebases[i].p == 0 && timebases[i].q == 0) | |
511 | ret = SR_ERR_ARG; | |
512 | break; | |
513 | case SR_HWCAP_TRIGGER_SOURCE: | |
a370ef19 | 514 | for (i = 0; trigger_sources[i]; i++) { |
4a090d72 BV |
515 | if (!strcmp(value, trigger_sources[i])) { |
516 | ctx->triggersource = g_strdup(value); | |
a370ef19 BV |
517 | break; |
518 | } | |
519 | } | |
520 | if (trigger_sources[i] == 0) | |
521 | ret = SR_ERR_ARG; | |
522 | break; | |
ebb781a6 BV |
523 | case SR_HWCAP_FILTER: |
524 | ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0; | |
525 | targets = g_strsplit(value, ",", 0); | |
526 | for (i = 0; targets[i]; i++) { | |
527 | if (targets[i] == '\0') | |
528 | /* Empty filter string can be used to clear them all. */ | |
529 | ; | |
530 | else if (!strcmp(targets[i], "CH1")) | |
531 | ctx->filter_ch1 = TRUE; | |
532 | else if (!strcmp(targets[i], "CH2")) | |
533 | ctx->filter_ch2 = TRUE; | |
534 | else if (!strcmp(targets[i], "TRIGGER")) | |
535 | ctx->filter_trigger = TRUE; | |
536 | else { | |
537 | sr_err("invalid filter target %s", targets[i]); | |
538 | ret = SR_ERR_ARG; | |
539 | } | |
540 | } | |
541 | g_strfreev(targets); | |
542 | break; | |
313deed2 BV |
543 | case SR_HWCAP_VDIV: |
544 | /* TODO not supporting vdiv per channel yet */ | |
62bb8840 | 545 | tmp_rat = *(const struct sr_rational *)value; |
313deed2 BV |
546 | for (i = 0; vdivs[i].p && vdivs[i].q; i++) { |
547 | if (vdivs[i].p == tmp_rat.p | |
548 | && vdivs[i].q == tmp_rat.q) { | |
549 | ctx->voltage_ch1 = i; | |
550 | ctx->voltage_ch2 = i; | |
551 | break; | |
552 | } | |
553 | } | |
554 | if (vdivs[i].p == 0 && vdivs[i].q == 0) | |
555 | ret = SR_ERR_ARG; | |
556 | break; | |
b58fbd99 BV |
557 | case SR_HWCAP_COUPLING: |
558 | /* TODO not supporting coupling per channel yet */ | |
b58fbd99 | 559 | for (i = 0; coupling[i]; i++) { |
4a090d72 | 560 | if (!strcmp(value, coupling[i])) { |
b58fbd99 BV |
561 | ctx->coupling_ch1 = i; |
562 | ctx->coupling_ch2 = i; | |
563 | break; | |
564 | } | |
565 | } | |
566 | if (coupling[i] == 0) | |
567 | ret = SR_ERR_ARG; | |
568 | break; | |
3b533202 BV |
569 | default: |
570 | ret = SR_ERR_ARG; | |
571 | } | |
572 | ||
573 | return ret; | |
574 | } | |
575 | ||
e749a8cb BV |
576 | static void send_chunk(struct context *ctx, unsigned char *buf, |
577 | int num_samples) | |
3b533202 BV |
578 | { |
579 | struct sr_datafeed_packet packet; | |
580 | struct sr_datafeed_analog analog; | |
c5841b28 | 581 | float ch1, ch2, range; |
6e71ef3b | 582 | int num_probes, data_offset, i; |
3b533202 | 583 | |
6e71ef3b | 584 | num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; |
3b533202 BV |
585 | packet.type = SR_DF_ANALOG; |
586 | packet.payload = &analog; | |
6e71ef3b | 587 | /* TODO: support for 5xxx series 9-bit samples */ |
e749a8cb | 588 | analog.num_samples = num_samples; |
9956f285 UH |
589 | analog.mq = SR_MQ_VOLTAGE; |
590 | analog.unit = SR_UNIT_VOLT; | |
6e71ef3b BV |
591 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes); |
592 | data_offset = 0; | |
3b533202 | 593 | for (i = 0; i < analog.num_samples; i++) { |
6e71ef3b BV |
594 | /* The device always sends data for both channels. If a channel |
595 | * is disabled, it contains a copy of the enabled channel's | |
596 | * data. However, we only send the requested channels to the bus. | |
c5841b28 BV |
597 | * |
598 | * Voltage values are encoded as a value 0-255 (0-512 on the 5200*), | |
599 | * where the value is a point in the range represented by the vdiv | |
600 | * setting. There are 8 vertical divs, so e.g. 500mV/div represents | |
601 | * 4V peak-to-peak where 0 = -2V and 255 = +2V. | |
6e71ef3b | 602 | */ |
3b533202 | 603 | /* TODO: support for 5xxx series 9-bit samples */ |
6e71ef3b | 604 | if (ctx->ch1_enabled) { |
c5841b28 | 605 | range = ((float)vdivs[ctx->voltage_ch1].p / vdivs[ctx->voltage_ch1].q) * 8; |
e749a8cb | 606 | ch1 = range / 255 * *(buf + i * 2 + 1); |
c5841b28 BV |
607 | /* Value is centered around 0V. */ |
608 | ch1 -= range / 2; | |
6e71ef3b BV |
609 | analog.data[data_offset++] = ch1; |
610 | } | |
611 | if (ctx->ch2_enabled) { | |
c5841b28 | 612 | range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8; |
e749a8cb | 613 | ch2 = range / 255 * *(buf + i * 2); |
c5841b28 | 614 | ch2 -= range / 2; |
6e71ef3b BV |
615 | analog.data[data_offset++] = ch2; |
616 | } | |
3b533202 | 617 | } |
e749a8cb BV |
618 | sr_session_send(ctx->cb_data, &packet); |
619 | ||
620 | } | |
621 | ||
622 | /* Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
623 | * Only channel data comes in asynchronously, and all transfers for this are | |
624 | * queued up beforehand, so this just needs so chuck the incoming data onto | |
625 | * the libsigrok session bus. | |
626 | */ | |
627 | static void receive_transfer(struct libusb_transfer *transfer) | |
628 | { | |
629 | struct sr_datafeed_packet packet; | |
630 | struct context *ctx; | |
631 | int num_samples, pre; | |
632 | ||
633 | ctx = transfer->user_data; | |
634 | sr_dbg("hantek-dso: receive_transfer(): status %d received %d bytes", | |
635 | transfer->status, transfer->actual_length); | |
636 | ||
637 | if (transfer->actual_length == 0) | |
638 | /* Nothing to send to the bus. */ | |
639 | return; | |
640 | ||
641 | num_samples = transfer->actual_length / 2; | |
642 | ||
643 | sr_dbg("hantek-dso: got %d-%d/%d samples in frame", ctx->samp_received + 1, | |
644 | ctx->samp_received + num_samples, ctx->framesize); | |
645 | ||
646 | /* The device always sends a full frame, but the beginning of the frame | |
647 | * doesn't represent the trigger point. The offset at which the trigger | |
648 | * happened came in with the capture state, so we need to start sending | |
649 | * from there up the session bus. The samples in the frame buffer before | |
650 | * that trigger point came after the end of the device's frame buffer was | |
651 | * reached, and it wrapped around to overwrite up until the trigger point. | |
652 | */ | |
653 | if (ctx->samp_received < ctx->trigger_offset) { | |
654 | /* Trigger point not yet reached. */ | |
655 | if (ctx->samp_received + num_samples < ctx->trigger_offset) { | |
656 | /* The entire chunk is before the trigger point. */ | |
657 | memcpy(ctx->framebuf + ctx->samp_buffered * 2, | |
658 | transfer->buffer, num_samples * 2); | |
659 | ctx->samp_buffered += num_samples; | |
660 | } else { | |
661 | /* This chunk hits or overruns the trigger point. | |
662 | * Store the part before the trigger fired, and | |
663 | * send the rest up to the session bus. */ | |
664 | pre = ctx->trigger_offset - ctx->samp_received; | |
665 | memcpy(ctx->framebuf + ctx->samp_buffered * 2, | |
666 | transfer->buffer, pre * 2); | |
667 | ctx->samp_buffered += pre; | |
668 | ||
669 | /* The rest of this chunk starts with the trigger point. */ | |
670 | sr_dbg("hantek-dso: reached trigger point, %d samples buffered", | |
671 | ctx->samp_buffered); | |
672 | ||
673 | /* Avoid the corner case where the chunk ended at | |
674 | * exactly the trigger point. */ | |
675 | if (num_samples > pre) | |
676 | send_chunk(ctx, transfer->buffer + pre * 2, | |
677 | num_samples - pre); | |
678 | } | |
679 | } else { | |
680 | /* Already past the trigger point, just send it all out. */ | |
681 | send_chunk(ctx, transfer->buffer, | |
682 | num_samples); | |
683 | } | |
684 | ||
685 | ctx->samp_received += num_samples; | |
686 | ||
687 | /* Everything in this transfer was either copied to the buffer or | |
688 | * sent to the session bus. */ | |
3b533202 BV |
689 | g_free(transfer->buffer); |
690 | libusb_free_transfer(transfer); | |
3b533202 | 691 | |
e749a8cb BV |
692 | if (ctx->samp_received >= ctx->framesize) { |
693 | /* That was the last chunk in this frame. Send the buffered | |
694 | * pre-trigger samples out now, in one big chunk. */ | |
695 | sr_dbg("hantek-dso: end of frame, sending %d pre-trigger buffered samples", | |
696 | ctx->samp_buffered); | |
697 | send_chunk(ctx, ctx->framebuf, ctx->samp_buffered); | |
698 | ||
699 | /* Mark the end of this frame. */ | |
ae88b97b BV |
700 | packet.type = SR_DF_FRAME_END; |
701 | sr_session_send(ctx->cb_data, &packet); | |
702 | ||
703 | if (ctx->limit_frames && ++ctx->num_frames == ctx->limit_frames) { | |
704 | /* Terminate session */ | |
6e71ef3b | 705 | /* TODO: don't leave pending USB transfers hanging */ |
ae88b97b BV |
706 | packet.type = SR_DF_END; |
707 | sr_session_send(ctx->cb_data, &packet); | |
708 | } else { | |
ae88b97b BV |
709 | ctx->dev_state = NEW_CAPTURE; |
710 | } | |
711 | } | |
712 | ||
3b533202 BV |
713 | } |
714 | ||
715 | static int handle_event(int fd, int revents, void *cb_data) | |
716 | { | |
ae88b97b | 717 | struct sr_datafeed_packet packet; |
3b533202 BV |
718 | struct timeval tv; |
719 | struct context *ctx; | |
e749a8cb | 720 | int num_probes; |
6e6eeff4 BV |
721 | uint32_t trigger_offset; |
722 | uint8_t capturestate; | |
3b533202 BV |
723 | |
724 | /* Avoid compiler warnings. */ | |
725 | (void)fd; | |
726 | (void)revents; | |
727 | ||
728 | /* Always handle pending libusb events. */ | |
729 | tv.tv_sec = tv.tv_usec = 0; | |
730 | libusb_handle_events_timeout(usb_context, &tv); | |
731 | ||
732 | ctx = cb_data; | |
733 | /* TODO: ugh */ | |
734 | if (ctx->dev_state == NEW_CAPTURE) { | |
735 | if (dso_capture_start(ctx) != SR_OK) | |
736 | return TRUE; | |
737 | if (dso_enable_trigger(ctx) != SR_OK) | |
738 | return TRUE; | |
a370ef19 BV |
739 | // if (dso_force_trigger(ctx) != SR_OK) |
740 | // return TRUE; | |
3b533202 BV |
741 | sr_dbg("hantek-dso: successfully requested next chunk"); |
742 | ctx->dev_state = CAPTURE; | |
743 | return TRUE; | |
744 | } | |
745 | if (ctx->dev_state != CAPTURE) | |
746 | return TRUE; | |
747 | ||
6e6eeff4 | 748 | if ((dso_get_capturestate(ctx, &capturestate, &trigger_offset)) != SR_OK) |
3b533202 | 749 | return TRUE; |
3b533202 BV |
750 | |
751 | sr_dbg("hantek-dso: capturestate %d", capturestate); | |
6e6eeff4 | 752 | sr_dbg("hantek-dso: trigger offset 0x%.6x", trigger_offset); |
3b533202 BV |
753 | switch (capturestate) { |
754 | case CAPTURE_EMPTY: | |
755 | if (++ctx->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
756 | ctx->capture_empty_count = 0; | |
757 | if (dso_capture_start(ctx) != SR_OK) | |
758 | break; | |
759 | if (dso_enable_trigger(ctx) != SR_OK) | |
760 | break; | |
a370ef19 BV |
761 | // if (dso_force_trigger(ctx) != SR_OK) |
762 | // break; | |
3b533202 BV |
763 | sr_dbg("hantek-dso: successfully requested next chunk"); |
764 | } | |
765 | break; | |
766 | case CAPTURE_FILLING: | |
767 | /* no data yet */ | |
768 | break; | |
769 | case CAPTURE_READY_8BIT: | |
e749a8cb BV |
770 | /* Remember where in the captured frame the trigger is. */ |
771 | ctx->trigger_offset = trigger_offset; | |
772 | ||
773 | num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1; | |
774 | ctx->framebuf = g_try_malloc(ctx->framesize * num_probes * 2); | |
775 | ctx->samp_buffered = ctx->samp_received = 0; | |
776 | ||
3b533202 BV |
777 | /* Tell the scope to send us the first frame. */ |
778 | if (dso_get_channeldata(ctx, receive_transfer) != SR_OK) | |
779 | break; | |
ae88b97b BV |
780 | |
781 | /* Don't hit the state machine again until we're done fetching | |
782 | * the data we just told the scope to send. | |
783 | */ | |
3b533202 | 784 | ctx->dev_state = FETCH_DATA; |
ae88b97b BV |
785 | |
786 | /* Tell the frontend a new frame is on the way. */ | |
787 | packet.type = SR_DF_FRAME_BEGIN; | |
788 | sr_session_send(cb_data, &packet); | |
3b533202 BV |
789 | break; |
790 | case CAPTURE_READY_9BIT: | |
791 | /* TODO */ | |
792 | sr_err("not yet supported"); | |
793 | break; | |
794 | case CAPTURE_TIMEOUT: | |
795 | /* Doesn't matter, we'll try again next time. */ | |
796 | break; | |
797 | default: | |
798 | sr_dbg("unknown capture state"); | |
799 | } | |
800 | ||
801 | return TRUE; | |
802 | } | |
803 | ||
62bb8840 | 804 | static int hw_dev_acquisition_start(int dev_index, void *cb_data) |
3b533202 BV |
805 | { |
806 | const struct libusb_pollfd **lupfd; | |
807 | struct sr_datafeed_packet packet; | |
808 | struct sr_datafeed_header header; | |
809 | struct sr_datafeed_meta_analog meta; | |
810 | struct sr_dev_inst *sdi; | |
811 | struct context *ctx; | |
812 | int i; | |
813 | ||
982947f7 | 814 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
815 | return SR_ERR; |
816 | ||
817 | if (sdi->status != SR_ST_ACTIVE) | |
818 | return SR_ERR; | |
819 | ||
820 | ctx = sdi->priv; | |
821 | ctx->cb_data = cb_data; | |
822 | ||
823 | if (dso_init(ctx) != SR_OK) | |
824 | return SR_ERR; | |
825 | ||
826 | if (dso_capture_start(ctx) != SR_OK) | |
827 | return SR_ERR; | |
828 | ||
829 | ctx->dev_state = CAPTURE; | |
830 | lupfd = libusb_get_pollfds(usb_context); | |
831 | for (i = 0; lupfd[i]; i++) | |
832 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event, | |
833 | ctx); | |
834 | free(lupfd); | |
835 | ||
836 | /* Send header packet to the session bus. */ | |
837 | packet.type = SR_DF_HEADER; | |
838 | packet.payload = (unsigned char *)&header; | |
839 | header.feed_version = 1; | |
840 | gettimeofday(&header.starttime, NULL); | |
841 | sr_session_send(cb_data, &packet); | |
842 | ||
843 | /* Send metadata about the SR_DF_ANALOG packets to come. */ | |
844 | packet.type = SR_DF_META_ANALOG; | |
845 | packet.payload = &meta; | |
88a13f30 | 846 | meta.num_probes = NUM_PROBES; |
3b533202 BV |
847 | sr_session_send(cb_data, &packet); |
848 | ||
849 | return SR_OK; | |
850 | } | |
851 | ||
852 | /* TODO: doesn't really cancel pending transfers so they might come in after | |
853 | * SR_DF_END is sent. | |
854 | */ | |
62bb8840 | 855 | static int hw_dev_acquisition_stop(int dev_index, void *cb_data) |
3b533202 BV |
856 | { |
857 | struct sr_datafeed_packet packet; | |
858 | struct sr_dev_inst *sdi; | |
859 | struct context *ctx; | |
860 | ||
982947f7 | 861 | if (!(sdi = sr_dev_inst_get(hdi->instances, dev_index))) |
3b533202 BV |
862 | return SR_ERR; |
863 | ||
864 | if (sdi->status != SR_ST_ACTIVE) | |
865 | return SR_ERR; | |
866 | ||
867 | ctx = sdi->priv; | |
868 | ctx->dev_state = IDLE; | |
869 | ||
870 | packet.type = SR_DF_END; | |
62bb8840 | 871 | sr_session_send(cb_data, &packet); |
3b533202 BV |
872 | |
873 | return SR_OK; | |
874 | } | |
875 | ||
62bb8840 | 876 | SR_PRIV struct sr_dev_driver hantek_dso_driver_info = { |
3b533202 BV |
877 | .name = "hantek-dso", |
878 | .longname = "Hantek DSO", | |
879 | .api_version = 1, | |
880 | .init = hw_init, | |
881 | .cleanup = hw_cleanup, | |
61136ea6 | 882 | .scan = hw_scan, |
3b533202 BV |
883 | .dev_open = hw_dev_open, |
884 | .dev_close = hw_dev_close, | |
62bb8840 UH |
885 | .dev_info_get = hw_dev_info_get, |
886 | .dev_status_get = hw_dev_status_get, | |
887 | .hwcap_get_all = hw_hwcap_get_all, | |
3b533202 | 888 | .dev_config_set = hw_dev_config_set, |
62bb8840 UH |
889 | .dev_acquisition_start = hw_dev_acquisition_start, |
890 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
982947f7 | 891 | .instances = NULL, |
3b533202 | 892 | }; |