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1 | /* | |
2 | * This file is part of the libsigrok 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 <config.h> | |
23 | #include <string.h> | |
24 | #include <glib.h> | |
25 | #include <libusb.h> | |
26 | #include <libsigrok/libsigrok.h> | |
27 | #include "libsigrok-internal.h" | |
28 | #include "protocol.h" | |
29 | ||
30 | static int send_begin(const struct sr_dev_inst *sdi) | |
31 | { | |
32 | struct sr_usb_dev_inst *usb; | |
33 | int ret; | |
34 | unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, | |
35 | 0x00, 0x01, 0x00}; | |
36 | ||
37 | sr_dbg("Sending CTRL_BEGINCOMMAND."); | |
38 | ||
39 | usb = sdi->conn; | |
40 | if ((ret = libusb_control_transfer(usb->devhdl, | |
41 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND, | |
42 | 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) { | |
43 | sr_err("Failed to send begincommand: %s.", | |
44 | libusb_error_name(ret)); | |
45 | return SR_ERR; | |
46 | } | |
47 | ||
48 | return SR_OK; | |
49 | } | |
50 | ||
51 | static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen) | |
52 | { | |
53 | struct sr_usb_dev_inst *usb; | |
54 | int ret, tmp; | |
55 | ||
56 | usb = sdi->conn; | |
57 | ||
58 | if (send_begin(sdi) != SR_OK) | |
59 | return SR_ERR; | |
60 | ||
61 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring, | |
62 | cmdlen, &tmp, 200)) != 0) | |
63 | return SR_ERR; | |
64 | ||
65 | return SR_OK; | |
66 | } | |
67 | ||
68 | static 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 | libusb_get_device_descriptor(dev, &des); | |
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(struct sr_dev_inst *sdi) | |
108 | { | |
109 | struct dev_context *devc; | |
110 | struct drv_context *drvc = sdi->driver->context; | |
111 | struct sr_usb_dev_inst *usb; | |
112 | struct libusb_device_descriptor des; | |
113 | libusb_device **devlist; | |
114 | int err, i; | |
115 | char connection_id[64]; | |
116 | ||
117 | devc = sdi->priv; | |
118 | usb = sdi->conn; | |
119 | ||
120 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
121 | for (i = 0; devlist[i]; i++) { | |
122 | libusb_get_device_descriptor(devlist[i], &des); | |
123 | ||
124 | if (des.idVendor != devc->profile->fw_vid | |
125 | || des.idProduct != devc->profile->fw_pid) | |
126 | continue; | |
127 | ||
128 | if ((sdi->status == SR_ST_INITIALIZING) || | |
129 | (sdi->status == SR_ST_INACTIVE)) { | |
130 | /* | |
131 | * Check device by its physical USB bus/port address. | |
132 | */ | |
133 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
134 | if (strcmp(sdi->connection_id, connection_id)) | |
135 | /* This is not the one. */ | |
136 | continue; | |
137 | } | |
138 | ||
139 | if (!(err = libusb_open(devlist[i], &usb->devhdl))) { | |
140 | if (usb->address == 0xff) | |
141 | /* | |
142 | * first time we touch this device after firmware upload, | |
143 | * so we don't know the address yet. | |
144 | */ | |
145 | usb->address = libusb_get_device_address(devlist[i]); | |
146 | ||
147 | if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) | |
148 | sr_err("Wrong endpoint profile."); | |
149 | else { | |
150 | sdi->status = SR_ST_ACTIVE; | |
151 | sr_info("Opened device on %d.%d (logical) / " | |
152 | "%s (physical) interface %d.", | |
153 | usb->bus, usb->address, | |
154 | sdi->connection_id, USB_INTERFACE); | |
155 | } | |
156 | } else { | |
157 | sr_err("Failed to open device: %s.", | |
158 | libusb_error_name(err)); | |
159 | } | |
160 | ||
161 | /* If we made it here, we handled the device (somehow). */ | |
162 | break; | |
163 | } | |
164 | libusb_free_device_list(devlist, 1); | |
165 | ||
166 | if (sdi->status != SR_ST_ACTIVE) | |
167 | return SR_ERR; | |
168 | ||
169 | return SR_OK; | |
170 | } | |
171 | ||
172 | SR_PRIV void dso_close(struct sr_dev_inst *sdi) | |
173 | { | |
174 | struct sr_usb_dev_inst *usb; | |
175 | ||
176 | usb = sdi->conn; | |
177 | ||
178 | if (!usb->devhdl) | |
179 | return; | |
180 | ||
181 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
182 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
183 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
184 | libusb_close(usb->devhdl); | |
185 | usb->devhdl = NULL; | |
186 | sdi->status = SR_ST_INACTIVE; | |
187 | ||
188 | } | |
189 | ||
190 | static int get_channel_offsets(const struct sr_dev_inst *sdi) | |
191 | { | |
192 | struct dev_context *devc; | |
193 | struct sr_usb_dev_inst *usb; | |
194 | GString *gs; | |
195 | int chan, v, ret; | |
196 | ||
197 | sr_dbg("Getting channel offsets."); | |
198 | ||
199 | devc = sdi->priv; | |
200 | usb = sdi->conn; | |
201 | ||
202 | ret = libusb_control_transfer(usb->devhdl, | |
203 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, | |
204 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
205 | (unsigned char *)&devc->channel_levels, | |
206 | sizeof(devc->channel_levels), 200); | |
207 | if (ret != sizeof(devc->channel_levels)) { | |
208 | sr_err("Failed to get channel offsets: %s.", | |
209 | libusb_error_name(ret)); | |
210 | return SR_ERR; | |
211 | } | |
212 | ||
213 | /* Comes in as 16-bit numbers with the second byte always 0 on | |
214 | * the DSO-2090. Guessing this is supposed to be big-endian, | |
215 | * since that's how voltage offsets are submitted back to the DSO. | |
216 | * Convert to host order now, so we can use them natively. | |
217 | */ | |
218 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
219 | for (v = 0; v < 9; v++) { | |
220 | devc->channel_levels[chan][v][0] = | |
221 | g_ntohs(devc->channel_levels[chan][v][0]); | |
222 | devc->channel_levels[chan][v][1] = | |
223 | g_ntohs(devc->channel_levels[chan][v][1]); | |
224 | } | |
225 | } | |
226 | ||
227 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
228 | gs = g_string_sized_new(128); | |
229 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
230 | g_string_printf(gs, "CH%d:", chan + 1); | |
231 | for (v = 0; v < 9; v++) { | |
232 | g_string_append_printf(gs, " %.4x-%.4x", | |
233 | devc->channel_levels[chan][v][0], | |
234 | devc->channel_levels[chan][v][1]); | |
235 | } | |
236 | sr_dbg("%s", gs->str); | |
237 | } | |
238 | g_string_free(gs, TRUE); | |
239 | } | |
240 | ||
241 | return SR_OK; | |
242 | } | |
243 | ||
244 | static int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) | |
245 | { | |
246 | struct dev_context *devc; | |
247 | struct sr_usb_dev_inst *usb; | |
248 | int ret, tmp; | |
249 | uint8_t cmdstring[12]; | |
250 | uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, | |
251 | 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; | |
252 | uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, | |
253 | 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; | |
254 | ||
255 | sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); | |
256 | ||
257 | devc = sdi->priv; | |
258 | usb = sdi->conn; | |
259 | ||
260 | memset(cmdstring, 0, sizeof(cmdstring)); | |
261 | /* Command */ | |
262 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
263 | ||
264 | /* Trigger source */ | |
265 | sr_dbg("Trigger source %s.", devc->triggersource); | |
266 | if (!strcmp("CH2", devc->triggersource)) | |
267 | tmp = 0; | |
268 | else if (!strcmp("CH1", devc->triggersource)) | |
269 | tmp = 1; | |
270 | else if (!strcmp("EXT", devc->triggersource)) | |
271 | tmp = 2; | |
272 | else { | |
273 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); | |
274 | return SR_ERR_ARG; | |
275 | } | |
276 | cmdstring[2] = tmp; | |
277 | ||
278 | /* Frame size */ | |
279 | sr_dbg("Frame size: %d.", devc->framesize); | |
280 | cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; | |
281 | ||
282 | /* Timebase fast */ | |
283 | sr_dbg("Time base index: %d.", devc->timebase); | |
284 | if (devc->framesize == FRAMESIZE_SMALL) { | |
285 | if (devc->timebase < TIME_20us) | |
286 | tmp = 0; | |
287 | else if (devc->timebase == TIME_20us) | |
288 | tmp = 1; | |
289 | else if (devc->timebase == TIME_40us) | |
290 | tmp = 2; | |
291 | else if (devc->timebase == TIME_100us) | |
292 | tmp = 3; | |
293 | else if (devc->timebase >= TIME_200us) | |
294 | tmp = 4; | |
295 | } else { | |
296 | if (devc->timebase < TIME_40us) { | |
297 | sr_err("Timebase < 40us only supported with 10K buffer."); | |
298 | return SR_ERR_ARG; | |
299 | } | |
300 | else if (devc->timebase == TIME_40us) | |
301 | tmp = 0; | |
302 | else if (devc->timebase == TIME_100us) | |
303 | tmp = 2; | |
304 | else if (devc->timebase == TIME_200us) | |
305 | tmp = 3; | |
306 | else if (devc->timebase >= TIME_400us) | |
307 | tmp = 4; | |
308 | } | |
309 | cmdstring[2] |= (tmp & 0x07) << 5; | |
310 | ||
311 | /* Enabled channels: 00=CH1 01=CH2 10=both */ | |
312 | sr_dbg("Channels CH1=%d CH2=%d", devc->ch_enabled[0], devc->ch_enabled[1]); | |
313 | tmp = (((devc->ch_enabled[1] ? 1 : 0) << 1) + (devc->ch_enabled[0] ? 1 : 0)) - 1; | |
314 | cmdstring[3] = tmp; | |
315 | ||
316 | /* Fast rates channel */ | |
317 | /* TODO: Is this right? */ | |
318 | tmp = devc->timebase < TIME_10us ? 1 : 0; | |
319 | cmdstring[3] |= tmp << 2; | |
320 | ||
321 | /* Trigger slope: 0=positive 1=negative */ | |
322 | /* TODO: Does this work? */ | |
323 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
324 | cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; | |
325 | ||
326 | /* Timebase slow */ | |
327 | if (devc->timebase < TIME_100us) | |
328 | tmp = 0; | |
329 | else if (devc->timebase > TIME_400ms) | |
330 | tmp = 0xffed; | |
331 | else { | |
332 | if (devc->framesize == FRAMESIZE_SMALL) | |
333 | tmp = timebase_small[devc->timebase - 3]; | |
334 | else | |
335 | tmp = timebase_large[devc->timebase - 3]; | |
336 | } | |
337 | cmdstring[4] = tmp & 0xff; | |
338 | cmdstring[5] = (tmp >> 8) & 0xff; | |
339 | ||
340 | /* Horizontal trigger position */ | |
341 | sr_dbg("Trigger position: %3.2f.", devc->triggerposition); | |
342 | tmp = 0x77fff + 0x8000 * devc->triggerposition; | |
343 | cmdstring[6] = tmp & 0xff; | |
344 | cmdstring[7] = (tmp >> 8) & 0xff; | |
345 | cmdstring[10] = (tmp >> 16) & 0xff; | |
346 | ||
347 | if (send_begin(sdi) != SR_OK) | |
348 | return SR_ERR; | |
349 | ||
350 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
351 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
352 | sr_err("Failed to set trigger/samplerate: %s.", | |
353 | libusb_error_name(ret)); | |
354 | return SR_ERR; | |
355 | } | |
356 | sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); | |
357 | ||
358 | return SR_OK; | |
359 | } | |
360 | ||
361 | static int dso_set_filters(const struct sr_dev_inst *sdi) | |
362 | { | |
363 | struct dev_context *devc; | |
364 | struct sr_usb_dev_inst *usb; | |
365 | int ret, tmp; | |
366 | uint8_t cmdstring[8]; | |
367 | ||
368 | sr_dbg("Preparing CMD_SET_FILTERS."); | |
369 | ||
370 | devc = sdi->priv; | |
371 | usb = sdi->conn; | |
372 | ||
373 | memset(cmdstring, 0, sizeof(cmdstring)); | |
374 | cmdstring[0] = CMD_SET_FILTERS; | |
375 | cmdstring[1] = 0x0f; | |
376 | if (devc->filter[0]) { | |
377 | sr_dbg("Turning on CH1 filter."); | |
378 | cmdstring[2] |= 0x80; | |
379 | } | |
380 | if (devc->filter[1]) { | |
381 | sr_dbg("Turning on CH2 filter."); | |
382 | cmdstring[2] |= 0x40; | |
383 | } | |
384 | /* | |
385 | * Not supported: filtering on the trigger | |
386 | * cmdstring[2] |= 0x20; | |
387 | */ | |
388 | ||
389 | if (send_begin(sdi) != SR_OK) | |
390 | return SR_ERR; | |
391 | ||
392 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
393 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
394 | sr_err("Failed to set filters: %s.", libusb_error_name(ret)); | |
395 | return SR_ERR; | |
396 | } | |
397 | sr_dbg("Sent CMD_SET_FILTERS."); | |
398 | ||
399 | return SR_OK; | |
400 | } | |
401 | ||
402 | static int dso_set_voltage(const struct sr_dev_inst *sdi) | |
403 | { | |
404 | struct dev_context *devc; | |
405 | struct sr_usb_dev_inst *usb; | |
406 | int ret, tmp; | |
407 | uint8_t cmdstring[8]; | |
408 | ||
409 | sr_dbg("Preparing CMD_SET_VOLTAGE."); | |
410 | ||
411 | devc = sdi->priv; | |
412 | usb = sdi->conn; | |
413 | ||
414 | memset(cmdstring, 0, sizeof(cmdstring)); | |
415 | cmdstring[0] = CMD_SET_VOLTAGE; | |
416 | cmdstring[1] = 0x0f; | |
417 | cmdstring[2] = 0x30; | |
418 | ||
419 | /* CH1 volts/div is encoded in bits 0-1 */ | |
420 | sr_dbg("CH1 vdiv index: %d.", devc->voltage[0]); | |
421 | switch (devc->voltage[0]) { | |
422 | case VDIV_1V: | |
423 | case VDIV_100MV: | |
424 | case VDIV_10MV: | |
425 | cmdstring[2] |= 0x00; | |
426 | break; | |
427 | case VDIV_2V: | |
428 | case VDIV_200MV: | |
429 | case VDIV_20MV: | |
430 | cmdstring[2] |= 0x01; | |
431 | break; | |
432 | case VDIV_5V: | |
433 | case VDIV_500MV: | |
434 | case VDIV_50MV: | |
435 | cmdstring[2] |= 0x02; | |
436 | break; | |
437 | } | |
438 | ||
439 | /* CH2 volts/div is encoded in bits 2-3 */ | |
440 | sr_dbg("CH2 vdiv index: %d.", devc->voltage[1]); | |
441 | switch (devc->voltage[1]) { | |
442 | case VDIV_1V: | |
443 | case VDIV_100MV: | |
444 | case VDIV_10MV: | |
445 | cmdstring[2] |= 0x00; | |
446 | break; | |
447 | case VDIV_2V: | |
448 | case VDIV_200MV: | |
449 | case VDIV_20MV: | |
450 | cmdstring[2] |= 0x04; | |
451 | break; | |
452 | case VDIV_5V: | |
453 | case VDIV_500MV: | |
454 | case VDIV_50MV: | |
455 | cmdstring[2] |= 0x08; | |
456 | break; | |
457 | } | |
458 | ||
459 | if (send_begin(sdi) != SR_OK) | |
460 | return SR_ERR; | |
461 | ||
462 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
463 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
464 | sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); | |
465 | return SR_ERR; | |
466 | } | |
467 | sr_dbg("Sent CMD_SET_VOLTAGE."); | |
468 | ||
469 | return SR_OK; | |
470 | } | |
471 | ||
472 | static int dso_set_relays(const struct sr_dev_inst *sdi) | |
473 | { | |
474 | struct dev_context *devc; | |
475 | struct sr_usb_dev_inst *usb; | |
476 | GString *gs; | |
477 | int ret, i; | |
478 | uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
479 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
480 | ||
481 | sr_dbg("Preparing CTRL_SETRELAYS."); | |
482 | ||
483 | devc = sdi->priv; | |
484 | usb = sdi->conn; | |
485 | ||
486 | if (devc->voltage[0] < VDIV_1V) | |
487 | relays[1] = ~relays[1]; | |
488 | ||
489 | if (devc->voltage[0] < VDIV_100MV) | |
490 | relays[2] = ~relays[2]; | |
491 | ||
492 | sr_dbg("CH1 coupling: %d.", devc->coupling[0]); | |
493 | if (devc->coupling[0] != COUPLING_AC) | |
494 | relays[3] = ~relays[3]; | |
495 | ||
496 | if (devc->voltage[1] < VDIV_1V) | |
497 | relays[4] = ~relays[4]; | |
498 | ||
499 | if (devc->voltage[1] < VDIV_100MV) | |
500 | relays[5] = ~relays[5]; | |
501 | ||
502 | sr_dbg("CH2 coupling: %d.", devc->coupling[1]); | |
503 | if (devc->coupling[1] != COUPLING_AC) | |
504 | relays[6] = ~relays[6]; | |
505 | ||
506 | if (!strcmp(devc->triggersource, "EXT")) | |
507 | relays[7] = ~relays[7]; | |
508 | ||
509 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
510 | gs = g_string_sized_new(128); | |
511 | g_string_printf(gs, "Relays:"); | |
512 | for (i = 0; i < 17; i++) | |
513 | g_string_append_printf(gs, " %.2x", relays[i]); | |
514 | sr_dbg("%s", gs->str); | |
515 | g_string_free(gs, TRUE); | |
516 | } | |
517 | ||
518 | if ((ret = libusb_control_transfer(usb->devhdl, | |
519 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, | |
520 | 0, 0, relays, 17, 100)) != sizeof(relays)) { | |
521 | sr_err("Failed to set relays: %s.", libusb_error_name(ret)); | |
522 | return SR_ERR; | |
523 | } | |
524 | sr_dbg("Sent CTRL_SETRELAYS."); | |
525 | ||
526 | return SR_OK; | |
527 | } | |
528 | ||
529 | static int dso_set_voffsets(const struct sr_dev_inst *sdi) | |
530 | { | |
531 | struct dev_context *devc; | |
532 | struct sr_usb_dev_inst *usb; | |
533 | int offset, ret; | |
534 | uint16_t *ch_levels; | |
535 | uint8_t offsets[17]; | |
536 | ||
537 | sr_dbg("Preparing CTRL_SETOFFSET."); | |
538 | ||
539 | devc = sdi->priv; | |
540 | usb = sdi->conn; | |
541 | ||
542 | memset(offsets, 0, sizeof(offsets)); | |
543 | /* Channel 1 */ | |
544 | ch_levels = devc->channel_levels[0][devc->voltage[0]]; | |
545 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; | |
546 | offsets[0] = (offset >> 8) | 0x20; | |
547 | offsets[1] = offset & 0xff; | |
548 | sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, | |
549 | offsets[0], offsets[1]); | |
550 | ||
551 | /* Channel 2 */ | |
552 | ch_levels = devc->channel_levels[1][devc->voltage[1]]; | |
553 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; | |
554 | offsets[2] = (offset >> 8) | 0x20; | |
555 | offsets[3] = offset & 0xff; | |
556 | sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, | |
557 | offsets[2], offsets[3]); | |
558 | ||
559 | /* Trigger */ | |
560 | offset = MAX_VERT_TRIGGER * devc->voffset_trigger; | |
561 | offsets[4] = (offset >> 8) | 0x20; | |
562 | offsets[5] = offset & 0xff; | |
563 | sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, | |
564 | offsets[4], offsets[5]); | |
565 | ||
566 | if ((ret = libusb_control_transfer(usb->devhdl, | |
567 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, | |
568 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
569 | sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); | |
570 | return SR_ERR; | |
571 | } | |
572 | sr_dbg("Sent CTRL_SETOFFSET."); | |
573 | ||
574 | return SR_OK; | |
575 | } | |
576 | ||
577 | SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) | |
578 | { | |
579 | struct sr_usb_dev_inst *usb; | |
580 | int ret, tmp; | |
581 | uint8_t cmdstring[2]; | |
582 | ||
583 | sr_dbg("Sending CMD_ENABLE_TRIGGER."); | |
584 | ||
585 | usb = sdi->conn; | |
586 | ||
587 | memset(cmdstring, 0, sizeof(cmdstring)); | |
588 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
589 | cmdstring[1] = 0x00; | |
590 | ||
591 | if (send_begin(sdi) != SR_OK) | |
592 | return SR_ERR; | |
593 | ||
594 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
595 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
596 | sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); | |
597 | return SR_ERR; | |
598 | } | |
599 | ||
600 | return SR_OK; | |
601 | } | |
602 | ||
603 | SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) | |
604 | { | |
605 | struct sr_usb_dev_inst *usb; | |
606 | int ret, tmp; | |
607 | uint8_t cmdstring[2]; | |
608 | ||
609 | sr_dbg("Sending CMD_FORCE_TRIGGER."); | |
610 | ||
611 | usb = sdi->conn; | |
612 | ||
613 | memset(cmdstring, 0, sizeof(cmdstring)); | |
614 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
615 | cmdstring[1] = 0x00; | |
616 | ||
617 | if (send_begin(sdi) != SR_OK) | |
618 | return SR_ERR; | |
619 | ||
620 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
621 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
622 | sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); | |
623 | return SR_ERR; | |
624 | } | |
625 | ||
626 | return SR_OK; | |
627 | } | |
628 | ||
629 | SR_PRIV int dso_init(const struct sr_dev_inst *sdi) | |
630 | { | |
631 | ||
632 | sr_dbg("Initializing DSO."); | |
633 | ||
634 | if (get_channel_offsets(sdi) != SR_OK) | |
635 | return SR_ERR; | |
636 | ||
637 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
638 | return SR_ERR; | |
639 | ||
640 | if (dso_set_filters(sdi) != SR_OK) | |
641 | return SR_ERR; | |
642 | ||
643 | if (dso_set_voltage(sdi) != SR_OK) | |
644 | return SR_ERR; | |
645 | ||
646 | if (dso_set_relays(sdi) != SR_OK) | |
647 | return SR_ERR; | |
648 | ||
649 | if (dso_set_voffsets(sdi) != SR_OK) | |
650 | return SR_ERR; | |
651 | ||
652 | if (dso_enable_trigger(sdi) != SR_OK) | |
653 | return SR_ERR; | |
654 | ||
655 | return SR_OK; | |
656 | } | |
657 | ||
658 | SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, | |
659 | uint8_t *capturestate, uint32_t *trigger_offset) | |
660 | { | |
661 | struct sr_usb_dev_inst *usb; | |
662 | int ret, tmp, i; | |
663 | unsigned int bitvalue, toff; | |
664 | uint8_t cmdstring[2], inbuf[512]; | |
665 | ||
666 | sr_dbg("Sending CMD_GET_CAPTURESTATE."); | |
667 | ||
668 | usb = sdi->conn; | |
669 | ||
670 | cmdstring[0] = CMD_GET_CAPTURESTATE; | |
671 | cmdstring[1] = 0; | |
672 | ||
673 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
674 | sr_dbg("Failed to send get_capturestate command: %s.", | |
675 | libusb_error_name(ret)); | |
676 | return SR_ERR; | |
677 | } | |
678 | ||
679 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, | |
680 | inbuf, 512, &tmp, 100)) != 0) { | |
681 | sr_dbg("Failed to get capturestate: %s.", | |
682 | libusb_error_name(ret)); | |
683 | return SR_ERR; | |
684 | } | |
685 | *capturestate = inbuf[0]; | |
686 | toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; | |
687 | ||
688 | /* | |
689 | * This conversion comes from the openhantek project. | |
690 | * Each set bit in the 24-bit value inverts all bits with a lower | |
691 | * value. No idea why the device reports the trigger point this way. | |
692 | */ | |
693 | bitvalue = 1; | |
694 | for (i = 0; i < 24; i++) { | |
695 | /* Each set bit inverts all bits with a lower value. */ | |
696 | if (toff & bitvalue) | |
697 | toff ^= bitvalue - 1; | |
698 | bitvalue <<= 1; | |
699 | } | |
700 | *trigger_offset = toff; | |
701 | ||
702 | return SR_OK; | |
703 | } | |
704 | ||
705 | SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) | |
706 | { | |
707 | int ret; | |
708 | uint8_t cmdstring[2]; | |
709 | ||
710 | sr_dbg("Sending CMD_CAPTURE_START."); | |
711 | ||
712 | cmdstring[0] = CMD_CAPTURE_START; | |
713 | cmdstring[1] = 0; | |
714 | ||
715 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
716 | sr_err("Failed to send capture_start command: %s.", | |
717 | libusb_error_name(ret)); | |
718 | return SR_ERR; | |
719 | } | |
720 | ||
721 | return SR_OK; | |
722 | } | |
723 | ||
724 | SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, | |
725 | libusb_transfer_cb_fn cb) | |
726 | { | |
727 | struct dev_context *devc; | |
728 | struct sr_usb_dev_inst *usb; | |
729 | struct libusb_transfer *transfer; | |
730 | int num_transfers, ret, i; | |
731 | uint8_t cmdstring[2]; | |
732 | unsigned char *buf; | |
733 | ||
734 | sr_dbg("Sending CMD_GET_CHANNELDATA."); | |
735 | ||
736 | devc = sdi->priv; | |
737 | usb = sdi->conn; | |
738 | ||
739 | cmdstring[0] = CMD_GET_CHANNELDATA; | |
740 | cmdstring[1] = 0; | |
741 | ||
742 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
743 | sr_err("Failed to get channel data: %s.", | |
744 | libusb_error_name(ret)); | |
745 | return SR_ERR; | |
746 | } | |
747 | ||
748 | /* TODO: DSO-2xxx only. */ | |
749 | num_transfers = devc->framesize * | |
750 | sizeof(unsigned short) / devc->epin_maxpacketsize; | |
751 | sr_dbg("Queueing up %d transfers.", num_transfers); | |
752 | for (i = 0; i < num_transfers; i++) { | |
753 | if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { | |
754 | sr_err("Failed to malloc USB endpoint buffer."); | |
755 | return SR_ERR_MALLOC; | |
756 | } | |
757 | transfer = libusb_alloc_transfer(0); | |
758 | libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, | |
759 | devc->epin_maxpacketsize, cb, (void *)sdi, 40); | |
760 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
761 | sr_err("Failed to submit transfer: %s.", | |
762 | libusb_error_name(ret)); | |
763 | /* TODO: Free them all. */ | |
764 | libusb_free_transfer(transfer); | |
765 | g_free(buf); | |
766 | return SR_ERR; | |
767 | } | |
768 | } | |
769 | ||
770 | return SR_OK; | |
771 | } |