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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 | * 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 | ||
30 | extern libusb_context *usb_context; | |
31 | extern GSList *dev_insts; | |
32 | ||
33 | ||
34 | static 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 | ||
52 | static 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 | ||
67 | SR_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 | ||
100 | err: | |
101 | if (conf_dsc) | |
102 | libusb_free_config_descriptor(conf_dsc); | |
103 | ||
104 | return mps; | |
105 | } | |
106 | ||
107 | SR_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 | ||
183 | SR_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 | ||
201 | static int get_channel_offsets(struct context *ctx) | |
202 | { | |
203 | int ret; | |
204 | ||
205 | sr_dbg("hantek-dso: getting channel offsets"); | |
206 | ||
207 | ret = libusb_control_transfer(ctx->usb->devhdl, | |
208 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, | |
209 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
210 | (unsigned char *)&ctx->channel_levels, | |
211 | sizeof(ctx->channel_levels), 200); | |
212 | if (ret != sizeof(ctx->channel_levels)) { | |
213 | sr_err("failed to get channel offsets: %d", ret); | |
214 | return SR_ERR; | |
215 | } | |
216 | ||
217 | return SR_OK; | |
218 | } | |
219 | ||
220 | SR_PRIV int dso_set_trigger_samplerate(struct context *ctx) | |
221 | { | |
222 | int ret, tmp; | |
223 | uint8_t cmdstring[12]; | |
224 | uint8_t timebasefast_small[] = {1, 2, 3, 4}; | |
225 | uint8_t timebasefast_large[] = {0, 0, 2, 3}; | |
226 | uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, | |
227 | 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; | |
228 | uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, | |
229 | 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; | |
230 | ||
231 | sr_dbg("hantek-dso: sending CMD_SET_TRIGGER_SAMPLERATE"); | |
232 | ||
233 | memset(cmdstring, 0, sizeof(cmdstring)); | |
234 | /* Command */ | |
235 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
236 | ||
237 | /* Trigger source */ | |
238 | cmdstring[2] = (ctx->triggersource & 0x03) << 6; | |
239 | ||
240 | /* Frame size */ | |
241 | cmdstring[2] |= (ctx->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 3; | |
242 | ||
243 | /* Timebase fast (no idea what this means) */ | |
244 | if (ctx->timebase < TIME_20us) | |
245 | tmp = 0; | |
246 | else if (ctx->timebase > TIME_200us) | |
247 | tmp = 4; | |
248 | else { | |
249 | if (ctx->framesize == FRAMESIZE_SMALL) | |
250 | tmp = timebasefast_small[ctx->timebase - 1]; | |
251 | else | |
252 | tmp = timebasefast_large[ctx->timebase - 1]; | |
253 | } | |
254 | cmdstring[2] |= tmp & 0x07; | |
255 | cmdstring[2] = 0x45; | |
6e71ef3b BV |
256 | /* Enabled channels */ |
257 | tmp = (((ctx->ch2_enabled ? 1 : 0) << 1) + (ctx->ch1_enabled ? 1 : 0)) - 1; | |
258 | cmdstring[3] = tmp; | |
3b533202 BV |
259 | |
260 | /* TODO: Fast rates channel */ | |
261 | cmdstring[3] |= 0 << 5; | |
262 | ||
263 | /* Trigger slope */ | |
264 | cmdstring[3] |= (ctx->triggerslope ? 1 : 0) << 4; | |
265 | ||
266 | /* Timebase */ | |
267 | if (ctx->timebase < TIME_100us) | |
268 | tmp = 0; | |
269 | else if (ctx->timebase > TIME_400ms) | |
270 | tmp = 0xffed; | |
271 | else { | |
272 | if (ctx->framesize == FRAMESIZE_SMALL) | |
273 | tmp = timebase_small[ctx->timebase - 3]; | |
274 | else | |
275 | tmp = timebase_large[ctx->timebase - 3]; | |
276 | } | |
277 | tmp = 0xebff; | |
278 | cmdstring[6] = tmp & 0xff; | |
279 | cmdstring[7] = (tmp >> 8) & 0xff; | |
280 | ||
281 | /* Trigger position (time) */ | |
282 | tmp = 0x77660 + ctx->triggerposition; | |
283 | tmp = 0x7006f; | |
284 | cmdstring[8] = tmp & 0xff; | |
285 | cmdstring[9] = (tmp >> 8) & 0xff; | |
286 | cmdstring[10] = (tmp >> 16) & 0xff; | |
287 | ||
288 | if (send_begin(ctx) != SR_OK) | |
289 | return SR_ERR; | |
290 | ||
291 | if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, | |
292 | DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, | |
293 | cmdstring, sizeof(cmdstring), | |
294 | &tmp, 100)) != 0) { | |
295 | sr_err("Failed to set trigger/samplerate: %d", ret); | |
296 | return SR_ERR; | |
297 | } | |
298 | ||
299 | return SR_OK; | |
300 | } | |
301 | ||
302 | SR_PRIV int dso_set_filters(struct context *ctx) | |
303 | { | |
304 | int ret, tmp; | |
305 | uint8_t cmdstring[8]; | |
306 | ||
307 | sr_dbg("hantek-dso: sending CMD_SET_FILTERS"); | |
308 | ||
309 | memset(cmdstring, 0, sizeof(cmdstring)); | |
310 | cmdstring[0] = CMD_SET_FILTERS; | |
311 | cmdstring[1] = 0x0f; | |
312 | if (ctx->filter_ch1) | |
313 | cmdstring[2] |= 0x80; | |
314 | if (ctx->filter_ch2) | |
315 | cmdstring[2] |= 0x40; | |
316 | if (ctx->filter_trigger) | |
317 | cmdstring[2] |= 0x20; | |
318 | ||
319 | if (send_begin(ctx) != SR_OK) | |
320 | return SR_ERR; | |
321 | ||
322 | if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, | |
323 | DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, | |
324 | cmdstring, sizeof(cmdstring), | |
325 | &tmp, 100)) != 0) { | |
326 | sr_err("Failed to set filters: %d", ret); | |
327 | return SR_ERR; | |
328 | } | |
329 | ||
330 | return SR_OK; | |
331 | } | |
332 | ||
333 | SR_PRIV int dso_set_voltage(struct context *ctx) | |
334 | { | |
335 | int ret, tmp; | |
336 | uint8_t cmdstring[8]; | |
337 | ||
338 | sr_dbg("hantek-dso: sending CMD_SET_VOLTAGE"); | |
339 | ||
340 | memset(cmdstring, 0, sizeof(cmdstring)); | |
341 | cmdstring[0] = CMD_SET_VOLTAGE; | |
342 | cmdstring[1] = 0x0f; | |
343 | cmdstring[2] = 0x03; | |
344 | cmdstring[2] |= ((2 - ctx->voltage_ch1 % 3) << 6); | |
345 | cmdstring[2] |= ((2 - ctx->voltage_ch2 % 3) << 4); | |
346 | cmdstring[2] = 0x30; | |
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 voltage: %d", ret); | |
356 | return SR_ERR; | |
357 | } | |
358 | ||
359 | return SR_OK; | |
360 | } | |
361 | ||
362 | SR_PRIV int dso_set_relays(struct context *ctx) | |
363 | { | |
364 | int ret, cv1, cv2; | |
365 | uint8_t relays[] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
366 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
367 | ||
368 | sr_dbg("hantek-dso: sending CTRL_SETRELAYS"); | |
369 | ||
370 | cv1 = ctx->voltage_ch1 / 3; | |
371 | cv2 = ctx->voltage_ch2 / 3; | |
372 | relays[0] = 0x01; | |
373 | if (cv1 > 0) | |
374 | relays[1] = ~relays[1]; | |
375 | ||
376 | if (cv1 > 1) | |
377 | relays[2] = ~relays[2]; | |
378 | ||
379 | if (ctx->coupling_ch1 != COUPLING_AC) | |
380 | relays[3] = ~relays[3]; | |
381 | ||
382 | if (cv2 > 0) | |
383 | relays[4] = ~relays[4]; | |
384 | ||
385 | if (cv2 > 1) | |
386 | relays[5] = ~relays[5]; | |
387 | ||
388 | if (ctx->coupling_ch2 != COUPLING_AC) | |
389 | relays[6] = ~relays[6]; | |
390 | ||
391 | if (ctx->triggersource == TRIGGER_EXT || ctx->triggersource == TRIGGER_EXT10) | |
392 | relays[7] = ~relays[7]; | |
393 | ||
394 | if ((ret = libusb_control_transfer(ctx->usb->devhdl, | |
395 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, | |
396 | 0, 0, relays, sizeof(relays), 100)) != sizeof(relays)) { | |
397 | sr_err("failed to set relays: %d", ret); | |
398 | return SR_ERR; | |
399 | } | |
400 | ||
401 | return SR_OK; | |
402 | } | |
403 | ||
404 | SR_PRIV int dso_set_voffsets(struct context *ctx) | |
405 | { | |
406 | int offset, ret; | |
407 | uint16_t *ch_levels; | |
408 | // uint8_t offsets[17]; | |
409 | uint8_t offsets[] = {0x20,0x75,0x30,0x3f,0x20,0xbd,0x3f,0x02,0x20,0x00,0x71,0x01,0x2e,0x0b,0x3f,0x02,0x50}; | |
410 | //uint8_t offsets[] = {0xff, 0x75, 0x30, 0x3f, 0x20, 0xbd, | |
411 | // 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
412 | //}; | |
413 | ||
414 | sr_dbg("hantek-dso: sending CTRL_SETOFFSET"); | |
415 | ||
416 | // memset(offsets, 0, sizeof(offsets)); | |
417 | // /* Channel 1 */ | |
418 | // ch_levels = ctx->channel_levels[0][VOLTAGE_10mV - ctx->voltage_ch1]; | |
419 | // offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch1 + ch_levels[0]; | |
420 | // offsets[0] = (offset >> 8) | 0x20; | |
421 | // offsets[1] = offset & 0xff; | |
422 | // | |
423 | // /* Channel 2 */ | |
424 | // ch_levels = ctx->channel_levels[1][VOLTAGE_10mV - ctx->voltage_ch2]; | |
425 | // offset = (ch_levels[1] - ch_levels[0]) * ctx->voffset_ch2 + ch_levels[0]; | |
426 | // offsets[2] = (offset >> 8) | 0x20; | |
427 | // offsets[3] = offset & 0xff; | |
428 | // | |
429 | // /* Trigger */ | |
430 | // offset = MAX_VERT_TRIGGER * ctx->voffset_trigger; | |
431 | // offsets[4] = (offset >> 8) | 0x20; | |
432 | // offsets[5] = offset & 0xff; | |
433 | ||
434 | if ((ret = libusb_control_transfer(ctx->usb->devhdl, | |
435 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, | |
436 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
437 | sr_err("failed to set offsets: %d", ret); | |
438 | return SR_ERR; | |
439 | } | |
440 | ||
441 | return SR_OK; | |
442 | } | |
443 | ||
444 | SR_PRIV int dso_enable_trigger(struct context *ctx) | |
445 | { | |
446 | int ret, tmp; | |
447 | uint8_t cmdstring[2]; | |
448 | ||
449 | sr_dbg("hantek-dso: sending CMD_ENABLE_TRIGGER"); | |
450 | ||
451 | memset(cmdstring, 0, sizeof(cmdstring)); | |
452 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
453 | cmdstring[1] = 0x00; | |
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 enable trigger: %d", ret); | |
463 | return SR_ERR; | |
464 | } | |
465 | ||
466 | return SR_OK; | |
467 | } | |
468 | ||
469 | SR_PRIV int dso_force_trigger(struct context *ctx) | |
470 | { | |
471 | int ret, tmp; | |
472 | uint8_t cmdstring[2]; | |
473 | ||
474 | sr_dbg("hantek-dso: sending CMD_FORCE_TRIGGER"); | |
475 | ||
476 | memset(cmdstring, 0, sizeof(cmdstring)); | |
477 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
478 | cmdstring[1] = 0x00; | |
479 | ||
480 | if (send_begin(ctx) != SR_OK) | |
481 | return SR_ERR; | |
482 | ||
483 | if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, | |
484 | DSO_EP_OUT | LIBUSB_ENDPOINT_OUT, | |
485 | cmdstring, sizeof(cmdstring), | |
486 | &tmp, 100)) != 0) { | |
487 | sr_err("Failed to force trigger: %d", ret); | |
488 | return SR_ERR; | |
489 | } | |
490 | ||
491 | return SR_OK; | |
492 | } | |
493 | ||
494 | SR_PRIV int dso_init(struct context *ctx) | |
495 | { | |
496 | ||
497 | sr_dbg("hantek-dso: initializing dso"); | |
498 | ||
499 | if (get_channel_offsets(ctx) != SR_OK) | |
500 | return SR_ERR; | |
501 | ||
502 | if (dso_set_trigger_samplerate(ctx) != SR_OK) | |
503 | return SR_ERR; | |
504 | ||
505 | if (dso_set_filters(ctx) != SR_OK) | |
506 | return SR_ERR; | |
507 | ||
508 | if (dso_set_voltage(ctx) != SR_OK) | |
509 | return SR_ERR; | |
510 | ||
511 | if (dso_set_relays(ctx) != SR_OK) | |
512 | return SR_ERR; | |
513 | ||
514 | if (dso_set_voffsets(ctx) != SR_OK) | |
515 | return SR_ERR; | |
516 | ||
517 | if (dso_enable_trigger(ctx) != SR_OK) | |
518 | return SR_ERR; | |
519 | ||
520 | if (dso_force_trigger(ctx) != SR_OK) | |
521 | return SR_ERR; | |
522 | ||
523 | return SR_OK; | |
524 | } | |
525 | ||
526 | SR_PRIV uint8_t dso_get_capturestate(struct context *ctx) | |
527 | { | |
528 | int ret, tmp; | |
529 | uint8_t cmdstring[2], inbuf[512]; | |
530 | ||
531 | sr_dbg("hantek-dso: sending CMD_GET_CAPTURESTATE"); | |
532 | ||
533 | cmdstring[0] = CMD_GET_CAPTURESTATE; | |
534 | cmdstring[1] = 0; | |
535 | ||
536 | if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
537 | sr_dbg("Failed to send get_capturestate command: %d", ret); | |
538 | return CAPTURE_UNKNOWN; | |
539 | } | |
540 | ||
541 | if ((ret = libusb_bulk_transfer(ctx->usb->devhdl, | |
542 | DSO_EP_IN | LIBUSB_ENDPOINT_IN, | |
543 | inbuf, 512, &tmp, 100)) != 0) { | |
544 | sr_dbg("Failed to get capturestate: %d", ret); | |
545 | return CAPTURE_UNKNOWN; | |
546 | } | |
547 | ||
548 | return inbuf[0]; | |
549 | } | |
550 | ||
551 | SR_PRIV uint8_t dso_capture_start(struct context *ctx) | |
552 | { | |
553 | int ret; | |
554 | uint8_t cmdstring[2]; | |
555 | ||
556 | sr_dbg("hantek-dso: sending CMD_CAPTURE_START"); | |
557 | ||
558 | cmdstring[0] = CMD_CAPTURE_START; | |
559 | cmdstring[1] = 0; | |
560 | ||
561 | if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
562 | sr_err("Failed to send capture_start command: %d", ret); | |
563 | return SR_ERR; | |
564 | } | |
565 | ||
566 | return SR_OK; | |
567 | } | |
568 | ||
569 | SR_PRIV int dso_get_channeldata(struct context *ctx, libusb_transfer_cb_fn cb) | |
570 | { | |
571 | struct libusb_transfer *transfer; | |
572 | int num_transfers, ret, i; | |
573 | uint8_t cmdstring[2]; | |
574 | unsigned char *buf; | |
575 | ||
576 | sr_dbg("hantek-dso: sending CMD_GET_CHANNELDATA"); | |
577 | ||
578 | cmdstring[0] = CMD_GET_CHANNELDATA; | |
579 | cmdstring[1] = 0; | |
580 | ||
581 | if ((ret = send_bulkcmd(ctx, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
582 | sr_err("Failed to get channel data: %d", ret); | |
583 | return SR_ERR; | |
584 | } | |
585 | ||
586 | /* TODO: dso-2xxx only */ | |
587 | num_transfers = ctx->framesize * sizeof(unsigned short) / ctx->epin_maxpacketsize; | |
588 | sr_dbg("hantek-dso: queueing up %d transfers", num_transfers); | |
589 | for (i = 0; i < num_transfers; i++) { | |
590 | if (!(buf = g_try_malloc(ctx->epin_maxpacketsize))) { | |
591 | sr_err("hantek-dso: %s: buf malloc failed", __func__); | |
592 | return SR_ERR_MALLOC; | |
593 | } | |
594 | transfer = libusb_alloc_transfer(0); | |
595 | libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, | |
596 | DSO_EP_IN | LIBUSB_ENDPOINT_IN, buf, | |
597 | ctx->epin_maxpacketsize, cb, ctx, 40); | |
598 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
599 | sr_err("failed to submit transfer: %d", ret); | |
600 | /* TODO: Free them all. */ | |
601 | libusb_free_transfer(transfer); | |
602 | g_free(buf); | |
603 | return SR_ERR; | |
604 | } | |
605 | } | |
606 | ||
607 | return SR_OK; | |
608 | } | |
609 |