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hantek-dso: relays now set properly
[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>
29
30extern libusb_context *usb_context;
31extern GSList *dev_insts;
32
33
34static int send_begin(struct context *ctx)
35{
36 int ret;
37 unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe,
38 0x00, 0x01, 0x00};
39
40 sr_dbg("hantek-dso: sending CTRL_BEGINCOMMAND");
41
42 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
43 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND,
44 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) {
45 sr_err("failed to send begincommand: %d", ret);
46 return SR_ERR;
47 }
48
49 return SR_OK;
50}
51
52static int send_bulkcmd(struct context *ctx, uint8_t *cmdstring, int cmdlen)
53{
54 int ret, tmp;
55
56 if (send_begin(ctx) != SR_OK)
57 return SR_ERR;
58
59 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
60 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
61 cmdstring, cmdlen, &tmp, 200)) != 0)
62 return SR_ERR;
63
64 return SR_OK;
65}
66
67SR_PRIV int dso_getmps(libusb_device *dev)
68{
69 struct libusb_device_descriptor des;
70 struct libusb_config_descriptor *conf_dsc;
71 const struct libusb_interface_descriptor *intf_dsc;
72 int mps;
73
74 if (libusb_get_device_descriptor(dev, &des) != 0)
75 return 0;
76
77 if (des.bNumConfigurations != 1)
78 return 0;
79
80 if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0)
81 return 0;
82
83 mps = 0;
84 intf_dsc = &(conf_dsc->interface[0].altsetting[0]);
85 if (intf_dsc->bNumEndpoints != 2)
86 goto err;
87
88 if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) !=
89 (2 | LIBUSB_ENDPOINT_OUT))
90 /* The first endpoint should be 2 (outbound). */
91 goto err;
92
93 if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) !=
94 (6 | LIBUSB_ENDPOINT_IN))
95 /* The second endpoint should be 6 (inbound). */
96 goto err;
97
98 mps = intf_dsc->endpoint[1].wMaxPacketSize;
99
100err:
101 if (conf_dsc)
102 libusb_free_config_descriptor(conf_dsc);
103
104 return mps;
105}
106
107SR_PRIV int dso_open(int dev_index)
108{
109 libusb_device **devlist;
110 struct libusb_device_descriptor des;
111 struct sr_dev_inst *sdi;
112 struct context *ctx;
113 int err, skip, i;
114
115 if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
116 return SR_ERR_ARG;
117 ctx = sdi->priv;
118
119 if (sdi->status == SR_ST_ACTIVE)
120 /* already in use */
121 return SR_ERR;
122
123 skip = 0;
124 libusb_get_device_list(usb_context, &devlist);
125 for (i = 0; devlist[i]; i++) {
126 if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
127 sr_err("hantek-dso: failed to get device descriptor: %d", err);
128 continue;
129 }
130
131 if (des.idVendor != ctx->profile->fw_vid
132 || des.idProduct != ctx->profile->fw_pid)
133 continue;
134
135 if (sdi->status == SR_ST_INITIALIZING) {
136 if (skip != dev_index) {
137 /* Skip devices of this type that aren't the one we want. */
138 skip += 1;
139 continue;
140 }
141 } else if (sdi->status == SR_ST_INACTIVE) {
142 /*
143 * This device is fully enumerated, so we need to find
144 * this device by vendor, product, bus and address.
145 */
146 if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus
147 || libusb_get_device_address(devlist[i]) != ctx->usb->address)
148 /* this is not the one */
149 continue;
150 }
151
152 if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) {
153 if (ctx->usb->address == 0xff)
154 /*
155 * first time we touch this device after firmware upload,
156 * so we don't know the address yet.
157 */
158 ctx->usb->address = libusb_get_device_address(devlist[i]);
159
160 if(!(ctx->epin_maxpacketsize = dso_getmps(devlist[i])))
161 sr_err("hantek-dso: wrong endpoint profile");
162 else {
163 sdi->status = SR_ST_ACTIVE;
164 sr_info("hantek-dso: opened device %d on %d.%d interface %d",
165 sdi->index, ctx->usb->bus,
166 ctx->usb->address, USB_INTERFACE);
167 }
168 } else {
169 sr_err("hantek-dso: failed to open device: %d", err);
170 }
171
172 /* if we made it here, we handled the device one way or another */
173 break;
174 }
175 libusb_free_device_list(devlist, 1);
176
177 if (sdi->status != SR_ST_ACTIVE)
178 return SR_ERR;
179
180 return SR_OK;
181}
182
183SR_PRIV void dso_close(struct sr_dev_inst *sdi)
184{
185 struct context *ctx;
186
187 ctx = sdi->priv;
188
189 if (ctx->usb->devhdl == NULL)
190 return;
191
192 sr_info("hantek-dso: closing device %d on %d.%d interface %d", sdi->index,
193 ctx->usb->bus, ctx->usb->address, USB_INTERFACE);
194 libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE);
195 libusb_close(ctx->usb->devhdl);
196 ctx->usb->devhdl = NULL;
197 sdi->status = SR_ST_INACTIVE;
198
199}
200
201static int get_channel_offsets(struct context *ctx)
202{
2715c0b8
BV		 203 GString *gs;
204 int chan, v, ret;
3b533202
BV		 205
206 sr_dbg("hantek-dso: getting channel offsets");
207
208 ret = libusb_control_transfer(ctx->usb->devhdl,
209 LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR,
210 CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0,
211 (unsigned char *)&ctx->channel_levels,
212 sizeof(ctx->channel_levels), 200);
213 if (ret != sizeof(ctx->channel_levels)) {
214 sr_err("failed to get channel offsets: %d", ret);
215 return SR_ERR;
216 }
217
2715c0b8
BV		 218 /* Comes in as 16-bit numbers with the second byte always 0 on
219 * the DSO-2090. Guessing this is supposed to be big-endian,
220 * since that's how voltage offsets are submitted back to the DSO.
221 * Convert to host order now, so we can use them natively.
222 */
223 for (chan = 0; chan < 2; chan++) {
224 for (v = 0; v < 9; v++) {
384c28d9
UH		 225 ctx->channel_levels[chan][v][0] = g_ntohs(ctx->channel_levels[chan][v][0]);
226 ctx->channel_levels[chan][v][1] = g_ntohs(ctx->channel_levels[chan][v][1]);
2715c0b8
BV		 227 }
228 }
229
230 if (sr_log_loglevel_get() >= SR_LOG_DBG) {
231 gs = g_string_sized_new(128);
232 for (chan = 0; chan < 2; chan++) {
233 g_string_printf(gs, "hantek-dso: CH%d:", chan + 1);
234 for (v = 0; v < 9; v++) {
235 g_string_append_printf(gs, " %.4x-%.4x",
236 ctx->channel_levels[chan][v][0],
237 ctx->channel_levels[chan][v][1]);
238 }
239 sr_dbg(gs->str);
240 }
241 g_string_free(gs, TRUE);
242 }
243
3b533202
BV		 244 return SR_OK;
245}
246
247SR_PRIV int dso_set_trigger_samplerate(struct context *ctx)
248{
249 int ret, tmp;
250 uint8_t cmdstring[12];
3b533202
BV		 251 uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce,
252 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 };
253 uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8,
254 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 };
255
a370ef19 256 sr_dbg("hantek-dso: preparing CMD_SET_TRIGGER_SAMPLERATE");
3b533202
BV		 257
258 memset(cmdstring, 0, sizeof(cmdstring));
259 /* Command */
260 cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE;
261
262 /* Trigger source */
a370ef19
BV		 263 sr_dbg("hantek-dso: trigger source %s", ctx->triggersource);
264 if (!strcmp("CH2", ctx->triggersource))
265 tmp = 0;
266 else if (!strcmp("CH1", ctx->triggersource))
267 tmp = 1;
268 else if (!strcmp("EXT", ctx->triggersource))
269 tmp = 2;
270 else {
271 sr_err("hantek-dso: invalid trigger source %s", ctx->triggersource);
272 return SR_ERR_ARG;
273 }
274 cmdstring[2] = tmp;
3b533202
BV		 275
276 /* Frame size */
a370ef19 277 sr_dbg("hantek-dso: frame size %d", ctx->framesize);
bc79e906
BV		 278 cmdstring[2] |= (ctx->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2;
279
280 /* Timebase fast */
a370ef19 281 sr_dbg("hantek-dso: time base index %d", ctx->timebase);
bc79e906
BV		 282 switch (ctx->framesize) {
283 case FRAMESIZE_SMALL:
284 if (ctx->timebase < TIME_20us)
285 tmp = 0;
286 else if (ctx->timebase == TIME_20us)
287 tmp = 1;
288 else if (ctx->timebase == TIME_40us)
289 tmp = 2;
290 else if (ctx->timebase == TIME_100us)
291 tmp = 3;
292 else if (ctx->timebase >= TIME_200us)
293 tmp = 4;
294 break;
295 case FRAMESIZE_LARGE:
296 if (ctx->timebase < TIME_40us) {
297 sr_err("hantek-dso: timebase < 40us only supported with 10K buffer");
298 return SR_ERR_ARG;
299 }
300 else if (ctx->timebase == TIME_40us)
301 tmp = 0;
302 else if (ctx->timebase == TIME_100us)
303 tmp = 2;
304 else if (ctx->timebase == TIME_200us)
305 tmp = 3;
306 else if (ctx->timebase >= TIME_400us)
307 tmp = 4;
308 break;
3b533202 309 }
bc79e906
BV		 310 cmdstring[2] |= (tmp & 0x07) << 5;
311
312 /* Enabled channels: 00=CH1 01=CH2 10=both */
a370ef19 313 sr_dbg("hantek-dso: channels CH1=%d CH2=%d", ctx->ch1_enabled, ctx->ch2_enabled);
6e71ef3b
BV		 314 tmp = (((ctx->ch2_enabled ? 1 : 0) << 1) + (ctx->ch1_enabled ? 1 : 0)) - 1;
315 cmdstring[3] = tmp;
3b533202 316
bc79e906
BV		 317 /* Fast rates channel */
318 /* TODO: is this right? */
319 tmp = ctx->timebase < TIME_10us ? 1 : 0;
320 cmdstring[3] |= tmp << 2;
3b533202 321
bc79e906 322 /* Trigger slope: 0=positive 1=negative */
a370ef19
BV		 323 /* TODO: does this work? */
324 sr_dbg("hantek-dso: trigger slope %d", ctx->triggerslope);
bc79e906 325 cmdstring[3] |= (ctx->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3;
3b533202 326
a370ef19 327 /* Timebase slow */
3b533202
BV		 328 if (ctx->timebase < TIME_100us)
329 tmp = 0;
330 else if (ctx->timebase > TIME_400ms)
331 tmp = 0xffed;
332 else {
333 if (ctx->framesize == FRAMESIZE_SMALL)
334 tmp = timebase_small[ctx->timebase - 3];
335 else
336 tmp = timebase_large[ctx->timebase - 3];
337 }
bc79e906
BV		 338 cmdstring[4] = tmp & 0xff;
339 cmdstring[5] = (tmp >> 8) & 0xff;
340
341 /* Horizontal trigger position */
a370ef19 342 sr_dbg("hantek-dso: trigger position %3.2f", ctx->triggerposition);
bc79e906 343 tmp = 0x77fff + 0x8000 * ctx->triggerposition;
3b533202
BV		 344 cmdstring[6] = tmp & 0xff;
345 cmdstring[7] = (tmp >> 8) & 0xff;
3b533202
BV		 346 cmdstring[10] = (tmp >> 16) & 0xff;
347
348 if (send_begin(ctx) != SR_OK)
349 return SR_ERR;
350
351 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
352 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
353 cmdstring, sizeof(cmdstring),
354 &tmp, 100)) != 0) {
355 sr_err("Failed to set trigger/samplerate: %d", ret);
356 return SR_ERR;
357 }
a370ef19 358 sr_dbg("hantek-dso: sent CMD_SET_TRIGGER_SAMPLERATE");
3b533202
BV		 359
360 return SR_OK;
361}
362
363SR_PRIV int dso_set_filters(struct context *ctx)
364{
365 int ret, tmp;
366 uint8_t cmdstring[8];
367
ebb781a6 368 sr_dbg("hantek-dso: preparing CMD_SET_FILTERS");
3b533202
BV		 369
370 memset(cmdstring, 0, sizeof(cmdstring));
371 cmdstring[0] = CMD_SET_FILTERS;
372 cmdstring[1] = 0x0f;
ebb781a6
BV		 373 if (ctx->filter_ch1) {
374 sr_dbg("hantek-dso: turning on CH1 filter");
3b533202 375 cmdstring[2] |= 0x80;
ebb781a6
BV		 376 }
377 if (ctx->filter_ch2) {
378 sr_dbg("hantek-dso: turning on CH2 filter");
3b533202 379 cmdstring[2] |= 0x40;
ebb781a6
BV		 380 }
381 if (ctx->filter_trigger) {
382 /* TODO: supported on the DSO-2090? */
383 sr_dbg("hantek-dso: turning on trigger filter");
3b533202 384 cmdstring[2] |= 0x20;
ebb781a6 385 }
3b533202
BV		 386
387 if (send_begin(ctx) != SR_OK)
388 return SR_ERR;
389
390 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
391 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
392 cmdstring, sizeof(cmdstring),
393 &tmp, 100)) != 0) {
394 sr_err("Failed to set filters: %d", ret);
395 return SR_ERR;
396 }
ebb781a6 397 sr_dbg("hantek-dso: sent CMD_SET_FILTERS");
3b533202
BV		 398
399 return SR_OK;
400}
401
402SR_PRIV int dso_set_voltage(struct context *ctx)
403{
404 int ret, tmp;
405 uint8_t cmdstring[8];
406
313deed2 407 sr_dbg("hantek-dso: preparing CMD_SET_VOLTAGE");
3b533202
BV		 408
409 memset(cmdstring, 0, sizeof(cmdstring));
410 cmdstring[0] = CMD_SET_VOLTAGE;
411 cmdstring[1] = 0x0f;
313deed2
BV		 412 cmdstring[2] = 0x30;
413
414 /* CH1 volts/div is encoded in bits 0-1 */
415 sr_dbg("hantek-dso: CH1 vdiv index %d", ctx->voltage_ch1);
416 switch (ctx->voltage_ch1) {
417 case VDIV_1V:
418 case VDIV_100MV:
419 case VDIV_10MV:
420 cmdstring[2] |= 0x00;
421 break;
422 case VDIV_2V:
423 case VDIV_200MV:
424 case VDIV_20MV:
425 cmdstring[2] |= 0x01;
426 break;
427 case VDIV_5V:
428 case VDIV_500MV:
429 case VDIV_50MV:
430 cmdstring[2] |= 0x02;
431 break;
432 }
433
434 /* CH2 volts/div is encoded in bits 2-3 */
435 sr_dbg("hantek-dso: CH2 vdiv index %d", ctx->voltage_ch2);
436 switch (ctx->voltage_ch2) {
437 case VDIV_1V:
438 case VDIV_100MV:
439 case VDIV_10MV:
440 cmdstring[2] |= 0x00;
441 break;
442 case VDIV_2V:
443 case VDIV_200MV:
444 case VDIV_20MV:
1d97091e 445 cmdstring[2] |= 0x04;
313deed2
BV		 446 break;
447 case VDIV_5V:
448 case VDIV_500MV:
449 case VDIV_50MV:
1d97091e 450 cmdstring[2] |= 0x08;
313deed2
BV		 451 break;
452 }
3b533202
BV		 453
454 if (send_begin(ctx) != SR_OK)
455 return SR_ERR;
456
457 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
458 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
459 cmdstring, sizeof(cmdstring),
460 &tmp, 100)) != 0) {
461 sr_err("Failed to set voltage: %d", ret);
462 return SR_ERR;
463 }
313deed2 464 sr_dbg("hantek-dso: sent CMD_SET_VOLTAGE");
3b533202
BV		 465
466 return SR_OK;
467}
468
469SR_PRIV int dso_set_relays(struct context *ctx)
470{
a217bcdf
BV		 471 GString *gs;
472 int ret, i;
473 uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01,
3b533202
BV		 474 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
475
b58fbd99 476 sr_dbg("hantek-dso: preparing CTRL_SETRELAYS");
3b533202 477
a217bcdf 478 if (ctx->voltage_ch1 < VDIV_1V)
3b533202
BV		 479 relays[1] = ~relays[1];
480
a217bcdf 481 if (ctx->voltage_ch1 < VDIV_100MV)
3b533202
BV		 482 relays[2] = ~relays[2];
483
b58fbd99 484 sr_dbg("hantek-dso: CH1 coupling %d", ctx->coupling_ch1);
3b533202
BV		 485 if (ctx->coupling_ch1 != COUPLING_AC)
486 relays[3] = ~relays[3];
487
a217bcdf 488 if (ctx->voltage_ch2 < VDIV_1V)
3b533202
BV		 489 relays[4] = ~relays[4];
490
a217bcdf 491 if (ctx->voltage_ch2 < VDIV_100MV)
3b533202
BV		 492 relays[5] = ~relays[5];
493
b58fbd99 494 sr_dbg("hantek-dso: CH2 coupling %d", ctx->coupling_ch1);
3b533202
BV		 495 if (ctx->coupling_ch2 != COUPLING_AC)
496 relays[6] = ~relays[6];
497
a370ef19 498 if (!strcmp(ctx->triggersource, "EXT"))
3b533202
BV		 499 relays[7] = ~relays[7];
500
a217bcdf
BV		 501 if (sr_log_loglevel_get() >= SR_LOG_DBG) {
502 gs = g_string_sized_new(128);
503 g_string_printf(gs, "hantek-dso: relays:");
504 for (i = 0; i < 17; i++)
505 g_string_append_printf(gs, " %.2x", relays[i]);
506 sr_dbg(gs->str);
507 g_string_free(gs, TRUE);
508 }
509
3b533202
BV		 510 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
511 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS,
a217bcdf 512 0, 0, relays, 17, 100)) != sizeof(relays)) {
3b533202
BV		 513 sr_err("failed to set relays: %d", ret);
514 return SR_ERR;
515 }
b58fbd99 516 sr_dbg("hantek-dso: sent CTRL_SETRELAYS");
3b533202
BV		 517
518 return SR_OK;
519}
520
521SR_PRIV int dso_set_voffsets(struct context *ctx)
522{
523 int offset, ret;
524 uint16_t *ch_levels;
2715c0b8
BV		 525 uint8_t offsets[17];
526
527 sr_dbg("hantek-dso: preparing CTRL_SETOFFSET");
528
529 memset(offsets, 0, sizeof(offsets));
530 /* Channel 1 */
531 ch_levels = ctx->channel_levels[0][ctx->voltage_ch1];
532 offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch1 + ch_levels[0];
533 offsets[0] = (offset >> 8) | 0x20;
534 offsets[1] = offset & 0xff;
535 sr_dbg("hantek-dso: CH1 offset %3.2f (%.2x%.2x)", ctx->voffset_ch1,
536 offsets[0], offsets[1]);
537
538 /* Channel 2 */
539 ch_levels = ctx->channel_levels[1][ctx->voltage_ch2];
540 offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch2 + ch_levels[0];
541 offsets[2] = (offset >> 8) | 0x20;
542 offsets[3] = offset & 0xff;
543 sr_dbg("hantek-dso: CH2 offset %3.2f (%.2x%.2x)", ctx->voffset_ch2,
544 offsets[2], offsets[3]);
545
546 /* Trigger */
547 offset = MAX_VERT_TRIGGER * ctx->voffset_trigger;
548 offsets[4] = (offset >> 8) | 0x20;
549 offsets[5] = offset & 0xff;
550 sr_dbg("hantek-dso: trigger offset %3.2f (%.2x%.2x)", ctx->voffset_trigger,
551 offsets[4], offsets[5]);
3b533202
BV		 552
553 if ((ret = libusb_control_transfer(ctx->usb->devhdl,
554 LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET,
555 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) {
556 sr_err("failed to set offsets: %d", ret);
557 return SR_ERR;
558 }
2715c0b8 559 sr_dbg("hantek-dso: sent CTRL_SETOFFSET");
3b533202
BV		 560
561 return SR_OK;
562}
563
564SR_PRIV int dso_enable_trigger(struct context *ctx)
565{
566 int ret, tmp;
567 uint8_t cmdstring[2];
568
569 sr_dbg("hantek-dso: sending CMD_ENABLE_TRIGGER");
570
571 memset(cmdstring, 0, sizeof(cmdstring));
572 cmdstring[0] = CMD_ENABLE_TRIGGER;
573 cmdstring[1] = 0x00;
574
575 if (send_begin(ctx) != SR_OK)
576 return SR_ERR;
577
578 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
579 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
580 cmdstring, sizeof(cmdstring),
581 &tmp, 100)) != 0) {
582 sr_err("Failed to enable trigger: %d", ret);
583 return SR_ERR;
584 }
585
586 return SR_OK;
587}
588
589SR_PRIV int dso_force_trigger(struct context *ctx)
590{
591 int ret, tmp;
592 uint8_t cmdstring[2];
593
594 sr_dbg("hantek-dso: sending CMD_FORCE_TRIGGER");
595
596 memset(cmdstring, 0, sizeof(cmdstring));
597 cmdstring[0] = CMD_FORCE_TRIGGER;
598 cmdstring[1] = 0x00;
599
600 if (send_begin(ctx) != SR_OK)
601 return SR_ERR;
602
603 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
604 DSO_EP_OUT | LIBUSB_ENDPOINT_OUT,
605 cmdstring, sizeof(cmdstring),
606 &tmp, 100)) != 0) {
607 sr_err("Failed to force trigger: %d", ret);
608 return SR_ERR;
609 }
610
611 return SR_OK;
612}
613
614SR_PRIV int dso_init(struct context *ctx)
615{
616
617 sr_dbg("hantek-dso: initializing dso");
618
619 if (get_channel_offsets(ctx) != SR_OK)
620 return SR_ERR;
621
622 if (dso_set_trigger_samplerate(ctx) != SR_OK)
623 return SR_ERR;
624
625 if (dso_set_filters(ctx) != SR_OK)
626 return SR_ERR;
627
628 if (dso_set_voltage(ctx) != SR_OK)
629 return SR_ERR;
630
631 if (dso_set_relays(ctx) != SR_OK)
632 return SR_ERR;
633
634 if (dso_set_voffsets(ctx) != SR_OK)
635 return SR_ERR;
636
637 if (dso_enable_trigger(ctx) != SR_OK)
638 return SR_ERR;
639
3b533202
BV		 640 return SR_OK;
641}
642
643SR_PRIV uint8_t dso_get_capturestate(struct context *ctx)
644{
645 int ret, tmp;
646 uint8_t cmdstring[2], inbuf[512];
647
648 sr_dbg("hantek-dso: sending CMD_GET_CAPTURESTATE");
649
650 cmdstring[0] = CMD_GET_CAPTURESTATE;
651 cmdstring[1] = 0;
652
653 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
654 sr_dbg("Failed to send get_capturestate command: %d", ret);
655 return CAPTURE_UNKNOWN;
656 }
657
658 if ((ret = libusb_bulk_transfer(ctx->usb->devhdl,
659 DSO_EP_IN | LIBUSB_ENDPOINT_IN,
660 inbuf, 512, &tmp, 100)) != 0) {
661 sr_dbg("Failed to get capturestate: %d", ret);
662 return CAPTURE_UNKNOWN;
663 }
664
665 return inbuf[0];
666}
667
668SR_PRIV uint8_t dso_capture_start(struct context *ctx)
669{
670 int ret;
671 uint8_t cmdstring[2];
672
673 sr_dbg("hantek-dso: sending CMD_CAPTURE_START");
674
675 cmdstring[0] = CMD_CAPTURE_START;
676 cmdstring[1] = 0;
677
678 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
679 sr_err("Failed to send capture_start command: %d", ret);
680 return SR_ERR;
681 }
682
683 return SR_OK;
684}
685
686SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb)
687{
688 struct libusb_transfer *transfer;
689 int num_transfers, ret, i;
690 uint8_t cmdstring[2];
691 unsigned char *buf;
692
693 sr_dbg("hantek-dso: sending CMD_GET_CHANNELDATA");
694
695 cmdstring[0] = CMD_GET_CHANNELDATA;
696 cmdstring[1] = 0;
697
698 if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) {
699 sr_err("Failed to get channel data: %d", ret);
700 return SR_ERR;
701 }
702
703 /* TODO: dso-2xxx only */
704 num_transfers = ctx->framesize * sizeof(unsigned short) / ctx->epin_maxpacketsize;
705 sr_dbg("hantek-dso: queueing up %d transfers", num_transfers);
706 for (i = 0; i < num_transfers; i++) {
707 if (!(buf = g_try_malloc(ctx->epin_maxpacketsize))) {
708 sr_err("hantek-dso: %s: buf malloc failed", __func__);
709 return SR_ERR_MALLOC;
710 }
711 transfer = libusb_alloc_transfer(0);
712 libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl,
713 DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf,
714 ctx->epin_maxpacketsize, cb, ctx, 40);
715 if ((ret = libusb_submit_transfer(transfer)) != 0) {
716 sr_err("failed to submit transfer: %d", ret);
717 /* TODO: Free them all. */
718 libusb_free_transfer(transfer);
719 g_free(buf);
720 return SR_ERR;
721 }
722 }
723
724 return SR_OK;
725}
726
Hardware access and backend lib