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sr: add udev entry for Victor 70C multimeter
[libsigrok.git] / hardware / hantek-dso / dso.c
CommitLineData
3b533202
BV		 1/*
2 * This file is part of the sigrok project.
3 *
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
5 * With protocol information from the hantekdso project,
6 * Copyright (C) 2008 Oleg Khudyakov <prcoder@gmail.com>
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "sigrok.h"
23#include "sigrok-internal.h"
24#include "config.h"
25#include "dso.h"
26#include <string.h>
27#include <glib.h>
28#include <libusb.h>
2715c0b8 29#include <arpa/inet.h>
3b533202
BV		 30
31extern libusb_context *usb_context;
32extern GSList *dev_insts;
33
34
35static int send_begin(struct context *ctx)
36{
37 int ret;
38 unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe,
39 0x00, 0x01, 0x00};
40
41 sr_dbg("hantek-dso: sending CTRL_BEGINCOMMAND");
42
43 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
44 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND,
45 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) {
46 sr_err("failed to send begincommand: %d", ret);
47 return SR_ERR;
48 }
49
50 return SR_OK;
51}
52
53static int send_bulkcmd(struct context *ctx, uint8_t *cmdstring, int cmdlen)
54{
55 int ret, tmp;
56
57 if (send_begin(ctx) != SR_OK)
58 return SR_ERR;
59
60 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
61 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
62 cmdstring, cmdlen, &tmp, 200)) != 0)
63 return SR_ERR;
64
65 return SR_OK;
66}
67
68SR_PRIV int dso_getmps(libusb_device *dev)
69{
70 struct libusb_device_descriptor des;
71 struct libusb_config_descriptor *conf_dsc;
72 const struct libusb_interface_descriptor *intf_dsc;
73 int mps;
74
75 if (libusb_get_device_descriptor(dev, &des) != 0)
76 return 0;
77
78 if (des.bNumConfigurations != 1)
79 return 0;
80
81 if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
82 return 0;
83
84 mps = 0;
85 intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
86 if (intf_dsc->bNumEndpoints != 2)
87 goto err;
88
89 if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
90 (2 | LIBUSB_ENDPOINT_OUT))
91 /* The first endpoint should be 2 (outbound). */
92 goto err;
93
94 if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
95 (6 | LIBUSB_ENDPOINT_IN))
96 /* The second endpoint should be 6 (inbound). */
97 goto err;
98
99 mps = intf_dsc->endpoint[1].wMaxPacketSize;
100
101err:
102 if (conf_dsc)
103 libusb_free_config_descriptor(conf_dsc);
104
105 return mps;
106}
107
108SR_PRIV int dso_open(int dev_index)
109{
110 libusb_device **devlist;
111 struct libusb_device_descriptor des;
112 struct sr_dev_inst *sdi;
113 struct context *ctx;
114 int err, skip, i;
115
116 if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
117 return SR_ERR_ARG;
118 ctx = sdi->priv;
119
120 if (sdi->status == SR_ST_ACTIVE)
121 /* already in use */
122 return SR_ERR;
123
124 skip = 0;
125 libusb_get_device_list(usb_context, &devlist);
126 for (i = 0; devlist[i]; i++) {
127 if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
128 sr_err("hantek-dso: failed to get device descriptor: %d", err);
129 continue;
130 }
131
132 if (des.idVendor != ctx->profile->fw_vid
133 || des.idProduct != ctx->profile->fw_pid)
134 continue;
135
136 if (sdi->status == SR_ST_INITIALIZING) {
137 if (skip != dev_index) {
138 /* Skip devices of this type that aren't the one we want. */
139 skip += 1;
140 continue;
141 }
142 } else if (sdi->status == SR_ST_INACTIVE) {
143 /*
144 * This device is fully enumerated, so we need to find
145 * this device by vendor, product, bus and address.
146 */
147 if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus
148 || libusb_get_device_address(devlist[i]) != ctx->usb->address)
149 /* this is not the one */
150 continue;
151 }
152
153 if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) {
154 if (ctx->usb->address == 0xff)
155 /*
156 * first time we touch this device after firmware upload,
157 * so we don't know the address yet.
158 */
159 ctx->usb->address = libusb_get_device_address(devlist[i]);
160
161 if(!(ctx->epin_maxpacketsize = dso_getmps(devlist[i])))
162 sr_err("hantek-dso: wrong endpoint profile");
163 else {
164 sdi->status = SR_ST_ACTIVE;
165 sr_info("hantek-dso: opened device %d on %d.%d interface %d",
166 sdi->index, ctx->usb->bus,
167 ctx->usb->address, USB_INTERFACE);
168 }
169 } else {
170 sr_err("hantek-dso: failed to open device: %d", err);
171 }
172
173 /* if we made it here, we handled the device one way or another */
174 break;
175 }
176 libusb_free_device_list(devlist, 1);
177
178 if (sdi->status != SR_ST_ACTIVE)
179 return SR_ERR;
180
181 return SR_OK;
182}
183
184SR_PRIV void dso_close(struct sr_dev_inst *sdi)
185{
186 struct context *ctx;
187
188 ctx = sdi->priv;
189
190 if (ctx->usb->devhdl == NULL)
191 return;
192
193 sr_info("hantek-dso: closing device %d on %d.%d interface %d", sdi->index,
194 ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
195 libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
196 libusb_close(ctx->usb->devhdl);
197 ctx->usb->devhdl = NULL;
198 sdi->status = SR_ST_INACTIVE;
199
200}
201
202static int get_channel_offsets(struct context *ctx)
203{
2715c0b8
BV		 204 GString *gs;
205 int chan, v, ret;
3b533202
BV		 206
207 sr_dbg("hantek-dso: getting channel offsets");
208
209 ret = libusb_control_transfer(ctx->usb->devhdl,
210 LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR,
211 CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0,
212 (unsigned char *)&ctx->channel_levels,
213 sizeof(ctx->channel_levels), 200);
214 if (ret != sizeof(ctx->channel_levels)) {
215 sr_err("failed to get channel offsets: %d", ret);
216 return SR_ERR;
217 }
218
2715c0b8
BV		 219 /* Comes in as 16-bit numbers with the second byte always 0 on
220 * the DSO-2090. Guessing this is supposed to be big-endian,
221 * since that's how voltage offsets are submitted back to the DSO.
222 * Convert to host order now, so we can use them natively.
223 */
224 for (chan = 0; chan < 2; chan++) {
225 for (v = 0; v < 9; v++) {
226 ctx->channel_levels[chan][v][0] = ntohs(ctx->channel_levels[chan][v][0]);
227 ctx->channel_levels[chan][v][1] = ntohs(ctx->channel_levels[chan][v][1]);
228 }
229 }
230
231 if (sr_log_loglevel_get() >= SR_LOG_DBG) {
232 gs = g_string_sized_new(128);
233 for (chan = 0; chan < 2; chan++) {
234 g_string_printf(gs, "hantek-dso: CH%d:", chan + 1);
235 for (v = 0; v < 9; v++) {
236 g_string_append_printf(gs, " %.4x-%.4x",
237 ctx->channel_levels[chan][v][0],
238 ctx->channel_levels[chan][v][1]);
239 }
240 sr_dbg(gs->str);
241 }
242 g_string_free(gs, TRUE);
243 }
244
3b533202
BV		 245 return SR_OK;
246}
247
248SR_PRIV int dso_set_trigger_samplerate(struct context *ctx)
249{
250 int ret, tmp;
251 uint8_t cmdstring[12];
3b533202
BV		 252 uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce,
253 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 };
254 uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8,
255 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 };
256
a370ef19 257 sr_dbg("hantek-dso: preparing CMD_SET_TRIGGER_SAMPLERATE");
3b533202
BV		 258
259 memset(cmdstring, 0, sizeof(cmdstring));
260 /* Command */
261 cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE;
262
263 /* Trigger source */
a370ef19
BV		 264 sr_dbg("hantek-dso: trigger source %s", ctx->triggersource);
265 if (!strcmp("CH2", ctx->triggersource))
266 tmp = 0;
267 else if (!strcmp("CH1", ctx->triggersource))
268 tmp = 1;
269 else if (!strcmp("EXT", ctx->triggersource))
270 tmp = 2;
271 else {
272 sr_err("hantek-dso: invalid trigger source %s", ctx->triggersource);
273 return SR_ERR_ARG;
274 }
275 cmdstring[2] = tmp;
3b533202
BV		 276
277 /* Frame size */
a370ef19 278 sr_dbg("hantek-dso: frame size %d", ctx->framesize);
bc79e906
BV		 279 cmdstring[2] |= (ctx->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2;
280
281 /* Timebase fast */
a370ef19 282 sr_dbg("hantek-dso: time base index %d", ctx->timebase);
bc79e906
BV		 283 switch (ctx->framesize) {
284 case FRAMESIZE_SMALL:
285 if (ctx->timebase < TIME_20us)
286 tmp = 0;
287 else if (ctx->timebase == TIME_20us)
288 tmp = 1;
289 else if (ctx->timebase == TIME_40us)
290 tmp = 2;
291 else if (ctx->timebase == TIME_100us)
292 tmp = 3;
293 else if (ctx->timebase >= TIME_200us)
294 tmp = 4;
295 break;
296 case FRAMESIZE_LARGE:
297 if (ctx->timebase < TIME_40us) {
298 sr_err("hantek-dso: timebase < 40us only supported with 10K buffer");
299 return SR_ERR_ARG;
300 }
301 else if (ctx->timebase == TIME_40us)
302 tmp = 0;
303 else if (ctx->timebase == TIME_100us)
304 tmp = 2;
305 else if (ctx->timebase == TIME_200us)
306 tmp = 3;
307 else if (ctx->timebase >= TIME_400us)
308 tmp = 4;
309 break;
3b533202 310 }
bc79e906
BV		 311 cmdstring[2] |= (tmp & 0x07) << 5;
312
313 /* Enabled channels: 00=CH1 01=CH2 10=both */
a370ef19 314 sr_dbg("hantek-dso: channels CH1=%d CH2=%d", ctx->ch1_enabled, ctx->ch2_enabled);
6e71ef3b
BV		 315 tmp = (((ctx->ch2_enabled ? 1 : 0) << 1) + (ctx->ch1_enabled ? 1 : 0)) - 1;
316 cmdstring[3] = tmp;
3b533202 317
bc79e906
BV		 318 /* Fast rates channel */
319 /* TODO: is this right? */
320 tmp = ctx->timebase < TIME_10us ? 1 : 0;
321 cmdstring[3] |= tmp << 2;
3b533202 322
bc79e906 323 /* Trigger slope: 0=positive 1=negative */
a370ef19
BV		 324 /* TODO: does this work? */
325 sr_dbg("hantek-dso: trigger slope %d", ctx->triggerslope);
bc79e906 326 cmdstring[3] |= (ctx->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3;
3b533202 327
a370ef19 328 /* Timebase slow */
3b533202
BV		 329 if (ctx->timebase < TIME_100us)
330 tmp = 0;
331 else if (ctx->timebase > TIME_400ms)
332 tmp = 0xffed;
333 else {
334 if (ctx->framesize == FRAMESIZE_SMALL)
335 tmp = timebase_small[ctx->timebase - 3];
336 else
337 tmp = timebase_large[ctx->timebase - 3];
338 }
bc79e906
BV		 339 cmdstring[4] = tmp & 0xff;
340 cmdstring[5] = (tmp >> 8) & 0xff;
341
342 /* Horizontal trigger position */
a370ef19 343 sr_dbg("hantek-dso: trigger position %3.2f", ctx->triggerposition);
bc79e906 344 tmp = 0x77fff + 0x8000 * ctx->triggerposition;
3b533202
BV		 345 cmdstring[6] = tmp & 0xff;
346 cmdstring[7] = (tmp >> 8) & 0xff;
3b533202
BV		 347 cmdstring[10] = (tmp >> 16) & 0xff;
348
349 if (send_begin(ctx) != SR_OK)
350 return SR_ERR;
351
352 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
353 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
354 cmdstring, sizeof(cmdstring),
355 &tmp, 100)) != 0) {
356 sr_err("Failed to set trigger/samplerate: %d", ret);
357 return SR_ERR;
358 }
a370ef19 359 sr_dbg("hantek-dso: sent CMD_SET_TRIGGER_SAMPLERATE");
3b533202
BV		 360
361 return SR_OK;
362}
363
364SR_PRIV int dso_set_filters(struct context *ctx)
365{
366 int ret, tmp;
367 uint8_t cmdstring[8];
368
ebb781a6 369 sr_dbg("hantek-dso: preparing CMD_SET_FILTERS");
3b533202
BV		 370
371 memset(cmdstring, 0, sizeof(cmdstring));
372 cmdstring[0] = CMD_SET_FILTERS;
373 cmdstring[1] = 0x0f;
ebb781a6
BV		 374 if (ctx->filter_ch1) {
375 sr_dbg("hantek-dso: turning on CH1 filter");
3b533202 376 cmdstring[2] |= 0x80;
ebb781a6
BV		 377 }
378 if (ctx->filter_ch2) {
379 sr_dbg("hantek-dso: turning on CH2 filter");
3b533202 380 cmdstring[2] |= 0x40;
ebb781a6
BV		 381 }
382 if (ctx->filter_trigger) {
383 /* TODO: supported on the DSO-2090? */
384 sr_dbg("hantek-dso: turning on trigger filter");
3b533202 385 cmdstring[2] |= 0x20;
ebb781a6 386 }
3b533202
BV		 387
388 if (send_begin(ctx) != SR_OK)
389 return SR_ERR;
390
391 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
392 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
393 cmdstring, sizeof(cmdstring),
394 &tmp, 100)) != 0) {
395 sr_err("Failed to set filters: %d", ret);
396 return SR_ERR;
397 }
ebb781a6 398 sr_dbg("hantek-dso: sent CMD_SET_FILTERS");
3b533202
BV		 399
400 return SR_OK;
401}
402
403SR_PRIV int dso_set_voltage(struct context *ctx)
404{
405 int ret, tmp;
406 uint8_t cmdstring[8];
407
313deed2 408 sr_dbg("hantek-dso: preparing CMD_SET_VOLTAGE");
3b533202
BV		 409
410 memset(cmdstring, 0, sizeof(cmdstring));
411 cmdstring[0] = CMD_SET_VOLTAGE;
412 cmdstring[1] = 0x0f;
313deed2
BV		 413 cmdstring[2] = 0x30;
414
415 /* CH1 volts/div is encoded in bits 0-1 */
416 sr_dbg("hantek-dso: CH1 vdiv index %d", ctx->voltage_ch1);
417 switch (ctx->voltage_ch1) {
418 case VDIV_1V:
419 case VDIV_100MV:
420 case VDIV_10MV:
421 cmdstring[2] |= 0x00;
422 break;
423 case VDIV_2V:
424 case VDIV_200MV:
425 case VDIV_20MV:
426 cmdstring[2] |= 0x01;
427 break;
428 case VDIV_5V:
429 case VDIV_500MV:
430 case VDIV_50MV:
431 cmdstring[2] |= 0x02;
432 break;
433 }
434
435 /* CH2 volts/div is encoded in bits 2-3 */
436 sr_dbg("hantek-dso: CH2 vdiv index %d", ctx->voltage_ch2);
437 switch (ctx->voltage_ch2) {
438 case VDIV_1V:
439 case VDIV_100MV:
440 case VDIV_10MV:
441 cmdstring[2] |= 0x00;
442 break;
443 case VDIV_2V:
444 case VDIV_200MV:
445 case VDIV_20MV:
446 cmdstring[2] |= 0x08;
447 break;
448 case VDIV_5V:
449 case VDIV_500MV:
450 case VDIV_50MV:
451 cmdstring[2] |= 0x04;
452 break;
453 }
3b533202
BV		 454
455 if (send_begin(ctx) != SR_OK)
456 return SR_ERR;
457
458 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
459 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
460 cmdstring, sizeof(cmdstring),
461 &tmp, 100)) != 0) {
462 sr_err("Failed to set voltage: %d", ret);
463 return SR_ERR;
464 }
313deed2 465 sr_dbg("hantek-dso: sent CMD_SET_VOLTAGE");
3b533202
BV		 466
467 return SR_OK;
468}
469
470SR_PRIV int dso_set_relays(struct context *ctx)
471{
472 int ret, cv1, cv2;
473 uint8_t relays[] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01,
474 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
475
b58fbd99 476 sr_dbg("hantek-dso: preparing CTRL_SETRELAYS");
3b533202
BV		 477
478 cv1 = ctx->voltage_ch1 / 3;
479 cv2 = ctx->voltage_ch2 / 3;
b58fbd99 480
3b533202
BV		 481 if (cv1 > 0)
482 relays[1] = ~relays[1];
483
484 if (cv1 > 1)
485 relays[2] = ~relays[2];
486
b58fbd99 487 sr_dbg("hantek-dso: CH1 coupling %d", ctx->coupling_ch1);
3b533202
BV		 488 if (ctx->coupling_ch1 != COUPLING_AC)
489 relays[3] = ~relays[3];
490
491 if (cv2 > 0)
492 relays[4] = ~relays[4];
493
494 if (cv2 > 1)
495 relays[5] = ~relays[5];
496
b58fbd99 497 sr_dbg("hantek-dso: CH2 coupling %d", ctx->coupling_ch1);
3b533202
BV		 498 if (ctx->coupling_ch2 != COUPLING_AC)
499 relays[6] = ~relays[6];
500
a370ef19 501 if (!strcmp(ctx->triggersource, "EXT"))
3b533202
BV		 502 relays[7] = ~relays[7];
503
504 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
505 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS,
506 0, 0, relays, sizeof(relays), 100)) != sizeof(relays)) {
507 sr_err("failed to set relays: %d", ret);
508 return SR_ERR;
509 }
b58fbd99 510 sr_dbg("hantek-dso: sent CTRL_SETRELAYS");
3b533202
BV		 511
512 return SR_OK;
513}
514
515SR_PRIV int dso_set_voffsets(struct context *ctx)
516{
517 int offset, ret;
518 uint16_t *ch_levels;
2715c0b8
BV		 519 uint8_t offsets[17];
520
521 sr_dbg("hantek-dso: preparing CTRL_SETOFFSET");
522
523 memset(offsets, 0, sizeof(offsets));
524 /* Channel 1 */
525 ch_levels = ctx->channel_levels[0][ctx->voltage_ch1];
526 offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch1 + ch_levels[0];
527 offsets[0] = (offset >> 8) | 0x20;
528 offsets[1] = offset & 0xff;
529 sr_dbg("hantek-dso: CH1 offset %3.2f (%.2x%.2x)", ctx->voffset_ch1,
530 offsets[0], offsets[1]);
531
532 /* Channel 2 */
533 ch_levels = ctx->channel_levels[1][ctx->voltage_ch2];
534 offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch2 + ch_levels[0];
535 offsets[2] = (offset >> 8) | 0x20;
536 offsets[3] = offset & 0xff;
537 sr_dbg("hantek-dso: CH2 offset %3.2f (%.2x%.2x)", ctx->voffset_ch2,
538 offsets[2], offsets[3]);
539
540 /* Trigger */
541 offset = MAX_VERT_TRIGGER * ctx->voffset_trigger;
542 offsets[4] = (offset >> 8) | 0x20;
543 offsets[5] = offset & 0xff;
544 sr_dbg("hantek-dso: trigger offset %3.2f (%.2x%.2x)", ctx->voffset_trigger,
545 offsets[4], offsets[5]);
3b533202
BV		 546
547 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
548 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET,
549 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) {
550 sr_err("failed to set offsets: %d", ret);
551 return SR_ERR;
552 }
2715c0b8 553 sr_dbg("hantek-dso: sent CTRL_SETOFFSET");
3b533202
BV		 554
555 return SR_OK;
556}
557
558SR_PRIV int dso_enable_trigger(struct context *ctx)
559{
560 int ret, tmp;
561 uint8_t cmdstring[2];
562
563 sr_dbg("hantek-dso: sending CMD_ENABLE_TRIGGER");
564
565 memset(cmdstring, 0, sizeof(cmdstring));
566 cmdstring[0] = CMD_ENABLE_TRIGGER;
567 cmdstring[1] = 0x00;
568
569 if (send_begin(ctx) != SR_OK)
570 return SR_ERR;
571
572 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
573 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
574 cmdstring, sizeof(cmdstring),
575 &tmp, 100)) != 0) {
576 sr_err("Failed to enable trigger: %d", ret);
577 return SR_ERR;
578 }
579
580 return SR_OK;
581}
582
583SR_PRIV int dso_force_trigger(struct context *ctx)
584{
585 int ret, tmp;
586 uint8_t cmdstring[2];
587
588 sr_dbg("hantek-dso: sending CMD_FORCE_TRIGGER");
589
590 memset(cmdstring, 0, sizeof(cmdstring));
591 cmdstring[0] = CMD_FORCE_TRIGGER;
592 cmdstring[1] = 0x00;
593
594 if (send_begin(ctx) != SR_OK)
595 return SR_ERR;
596
597 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
598 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
599 cmdstring, sizeof(cmdstring),
600 &tmp, 100)) != 0) {
601 sr_err("Failed to force trigger: %d", ret);
602 return SR_ERR;
603 }
604
605 return SR_OK;
606}
607
608SR_PRIV int dso_init(struct context *ctx)
609{
610
611 sr_dbg("hantek-dso: initializing dso");
612
613 if (get_channel_offsets(ctx) != SR_OK)
614 return SR_ERR;
615
616 if (dso_set_trigger_samplerate(ctx) != SR_OK)
617 return SR_ERR;
618
619 if (dso_set_filters(ctx) != SR_OK)
620 return SR_ERR;
621
622 if (dso_set_voltage(ctx) != SR_OK)
623 return SR_ERR;
624
625 if (dso_set_relays(ctx) != SR_OK)
626 return SR_ERR;
627
628 if (dso_set_voffsets(ctx) != SR_OK)
629 return SR_ERR;
630
631 if (dso_enable_trigger(ctx) != SR_OK)
632 return SR_ERR;
633
3b533202
BV		 634 return SR_OK;
635}
636
637SR_PRIV uint8_t dso_get_capturestate(struct context *ctx)
638{
639 int ret, tmp;
640 uint8_t cmdstring[2], inbuf[512];
641
642 sr_dbg("hantek-dso: sending CMD_GET_CAPTURESTATE");
643
644 cmdstring[0] = CMD_GET_CAPTURESTATE;
645 cmdstring[1] = 0;
646
647 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
648 sr_dbg("Failed to send get_capturestate command: %d", ret);
649 return CAPTURE_UNKNOWN;
650 }
651
652 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
653 DSO_EP_IN | LIBUSB_ENDPOINT_IN,
654 inbuf, 512, &tmp, 100)) != 0) {
655 sr_dbg("Failed to get capturestate: %d", ret);
656 return CAPTURE_UNKNOWN;
657 }
658
659 return inbuf[0];
660}
661
662SR_PRIV uint8_t dso_capture_start(struct context *ctx)
663{
664 int ret;
665 uint8_t cmdstring[2];
666
667 sr_dbg("hantek-dso: sending CMD_CAPTURE_START");
668
669 cmdstring[0] = CMD_CAPTURE_START;
670 cmdstring[1] = 0;
671
672 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
673 sr_err("Failed to send capture_start command: %d", ret);
674 return SR_ERR;
675 }
676
677 return SR_OK;
678}
679
680SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb)
681{
682 struct libusb_transfer *transfer;
683 int num_transfers, ret, i;
684 uint8_t cmdstring[2];
685 unsigned char *buf;
686
687 sr_dbg("hantek-dso: sending CMD_GET_CHANNELDATA");
688
689 cmdstring[0] = CMD_GET_CHANNELDATA;
690 cmdstring[1] = 0;
691
692 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
693 sr_err("Failed to get channel data: %d", ret);
694 return SR_ERR;
695 }
696
697 /* TODO: dso-2xxx only */
698 num_transfers = ctx->framesize * sizeof(unsigned short) / ctx->epin_maxpacketsize;
699 sr_dbg("hantek-dso: queueing up %d transfers", num_transfers);
700 for (i = 0; i < num_transfers; i++) {
701 if (!(buf = g_try_malloc(ctx->epin_maxpacketsize))) {
702 sr_err("hantek-dso: %s: buf malloc failed", __func__);
703 return SR_ERR_MALLOC;
704 }
705 transfer = libusb_alloc_transfer(0);
706 libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl,
707 DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf,
708 ctx->epin_maxpacketsize, cb, ctx, 40);
709 if ((ret = libusb_submit_transfer(transfer)) != 0) {
710 sr_err("failed to submit transfer: %d", ret);
711 /* TODO: Free them all. */
712 libusb_free_transfer(transfer);
713 g_free(buf);
714 return SR_ERR;
715 }
716 }
717
718 return SR_OK;
719}
720
Hardware access and backend lib