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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 | #define NUM_CHANNELS 2 | |
31 | ||
32 | static int send_begin(const struct sr_dev_inst *sdi) | |
33 | { | |
34 | struct sr_usb_dev_inst *usb; | |
35 | int ret; | |
36 | unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, | |
37 | 0x00, 0x01, 0x00}; | |
38 | ||
39 | sr_dbg("Sending CTRL_BEGINCOMMAND."); | |
40 | ||
41 | usb = sdi->conn; | |
42 | if ((ret = libusb_control_transfer(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: %s.", | |
46 | libusb_error_name(ret)); | |
47 | return SR_ERR; | |
48 | } | |
49 | ||
50 | return SR_OK; | |
51 | } | |
52 | ||
53 | static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen) | |
54 | { | |
55 | struct sr_usb_dev_inst *usb; | |
56 | int ret, tmp; | |
57 | ||
58 | usb = sdi->conn; | |
59 | ||
60 | if (send_begin(sdi) != SR_OK) | |
61 | return SR_ERR; | |
62 | ||
63 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring, | |
64 | cmdlen, &tmp, 200)) != 0) | |
65 | return SR_ERR; | |
66 | ||
67 | return SR_OK; | |
68 | } | |
69 | ||
70 | static int dso_getmps(libusb_device *dev) | |
71 | { | |
72 | struct libusb_device_descriptor des; | |
73 | struct libusb_config_descriptor *conf_dsc; | |
74 | const struct libusb_interface_descriptor *intf_dsc; | |
75 | int mps; | |
76 | ||
77 | libusb_get_device_descriptor(dev, &des); | |
78 | ||
79 | if (des.bNumConfigurations != 1) | |
80 | return 0; | |
81 | ||
82 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) | |
83 | return 0; | |
84 | ||
85 | mps = 0; | |
86 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
87 | if (intf_dsc->bNumEndpoints != 2) | |
88 | goto err; | |
89 | ||
90 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != | |
91 | (2 | LIBUSB_ENDPOINT_OUT)) | |
92 | /* The first endpoint should be 2 (outbound). */ | |
93 | goto err; | |
94 | ||
95 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != | |
96 | (6 | LIBUSB_ENDPOINT_IN)) | |
97 | /* The second endpoint should be 6 (inbound). */ | |
98 | goto err; | |
99 | ||
100 | mps = intf_dsc->endpoint[1].wMaxPacketSize; | |
101 | ||
102 | err: | |
103 | if (conf_dsc) | |
104 | libusb_free_config_descriptor(conf_dsc); | |
105 | ||
106 | return mps; | |
107 | } | |
108 | ||
109 | SR_PRIV int dso_open(struct sr_dev_inst *sdi) | |
110 | { | |
111 | struct dev_context *devc; | |
112 | struct drv_context *drvc = sdi->driver->context; | |
113 | struct sr_usb_dev_inst *usb; | |
114 | struct libusb_device_descriptor des; | |
115 | libusb_device **devlist; | |
116 | int err, i; | |
117 | char connection_id[64]; | |
118 | ||
119 | devc = sdi->priv; | |
120 | usb = sdi->conn; | |
121 | ||
122 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
123 | for (i = 0; devlist[i]; i++) { | |
124 | libusb_get_device_descriptor(devlist[i], &des); | |
125 | ||
126 | if (des.idVendor != devc->profile->fw_vid | |
127 | || des.idProduct != devc->profile->fw_pid) | |
128 | continue; | |
129 | ||
130 | if ((sdi->status == SR_ST_INITIALIZING) || | |
131 | (sdi->status == SR_ST_INACTIVE)) { | |
132 | /* | |
133 | * Check device by its physical USB bus/port address. | |
134 | */ | |
135 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
136 | if (strcmp(sdi->connection_id, connection_id)) | |
137 | /* This is not the one. */ | |
138 | continue; | |
139 | } | |
140 | ||
141 | if (!(err = libusb_open(devlist[i], &usb->devhdl))) { | |
142 | if (usb->address == 0xff) | |
143 | /* | |
144 | * first time we touch this device after firmware upload, | |
145 | * so we don't know the address yet. | |
146 | */ | |
147 | usb->address = libusb_get_device_address(devlist[i]); | |
148 | ||
149 | if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) | |
150 | sr_err("Wrong endpoint profile."); | |
151 | else { | |
152 | sdi->status = SR_ST_ACTIVE; | |
153 | sr_info("Opened device on %d.%d (logical) / " | |
154 | "%s (physical) interface %d.", | |
155 | usb->bus, usb->address, | |
156 | sdi->connection_id, USB_INTERFACE); | |
157 | } | |
158 | } else { | |
159 | sr_err("Failed to open device: %s.", | |
160 | libusb_error_name(err)); | |
161 | } | |
162 | ||
163 | /* If we made it here, we handled the device (somehow). */ | |
164 | break; | |
165 | } | |
166 | libusb_free_device_list(devlist, 1); | |
167 | ||
168 | if (sdi->status != SR_ST_ACTIVE) | |
169 | return SR_ERR; | |
170 | ||
171 | return SR_OK; | |
172 | } | |
173 | ||
174 | SR_PRIV void dso_close(struct sr_dev_inst *sdi) | |
175 | { | |
176 | struct sr_usb_dev_inst *usb; | |
177 | ||
178 | usb = sdi->conn; | |
179 | ||
180 | if (!usb->devhdl) | |
181 | return; | |
182 | ||
183 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
184 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
185 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
186 | libusb_close(usb->devhdl); | |
187 | usb->devhdl = NULL; | |
188 | sdi->status = SR_ST_INACTIVE; | |
189 | ||
190 | } | |
191 | ||
192 | static int get_channel_offsets(const struct sr_dev_inst *sdi) | |
193 | { | |
194 | struct dev_context *devc; | |
195 | struct sr_usb_dev_inst *usb; | |
196 | GString *gs; | |
197 | int chan, v, ret; | |
198 | ||
199 | sr_dbg("Getting channel offsets."); | |
200 | ||
201 | devc = sdi->priv; | |
202 | usb = sdi->conn; | |
203 | ||
204 | ret = libusb_control_transfer(usb->devhdl, | |
205 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, | |
206 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
207 | (unsigned char *)&devc->channel_levels, | |
208 | sizeof(devc->channel_levels), 200); | |
209 | if (ret != sizeof(devc->channel_levels)) { | |
210 | sr_err("Failed to get channel offsets: %s.", | |
211 | libusb_error_name(ret)); | |
212 | return SR_ERR; | |
213 | } | |
214 | ||
215 | /* Comes in as 16-bit numbers with the second byte always 0 on | |
216 | * the DSO-2090. Guessing this is supposed to be big-endian, | |
217 | * since that's how voltage offsets are submitted back to the DSO. | |
218 | * Convert to host order now, so we can use them natively. | |
219 | */ | |
220 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
221 | for (v = 0; v < 9; v++) { | |
222 | devc->channel_levels[chan][v][0] = | |
223 | g_ntohs(devc->channel_levels[chan][v][0]); | |
224 | devc->channel_levels[chan][v][1] = | |
225 | g_ntohs(devc->channel_levels[chan][v][1]); | |
226 | } | |
227 | } | |
228 | ||
229 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
230 | gs = g_string_sized_new(128); | |
231 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
232 | g_string_printf(gs, "CH%d:", chan + 1); | |
233 | for (v = 0; v < 9; v++) { | |
234 | g_string_append_printf(gs, " %.4x-%.4x", | |
235 | devc->channel_levels[chan][v][0], | |
236 | devc->channel_levels[chan][v][1]); | |
237 | } | |
238 | sr_dbg("%s", gs->str); | |
239 | } | |
240 | g_string_free(gs, TRUE); | |
241 | } | |
242 | ||
243 | return SR_OK; | |
244 | } | |
245 | ||
246 | static int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) | |
247 | { | |
248 | struct dev_context *devc; | |
249 | struct sr_usb_dev_inst *usb; | |
250 | int ret, tmp; | |
251 | uint8_t cmdstring[12]; | |
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 | ||
257 | sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); | |
258 | ||
259 | devc = sdi->priv; | |
260 | usb = sdi->conn; | |
261 | ||
262 | memset(cmdstring, 0, sizeof(cmdstring)); | |
263 | /* Command */ | |
264 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
265 | ||
266 | /* Trigger source */ | |
267 | sr_dbg("Trigger source %s.", devc->triggersource); | |
268 | if (!strcmp("CH2", devc->triggersource)) | |
269 | tmp = 0; | |
270 | else if (!strcmp("CH1", devc->triggersource)) | |
271 | tmp = 1; | |
272 | else if (!strcmp("EXT", devc->triggersource)) | |
273 | tmp = 2; | |
274 | else { | |
275 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); | |
276 | return SR_ERR_ARG; | |
277 | } | |
278 | cmdstring[2] = tmp; | |
279 | ||
280 | /* Frame size */ | |
281 | sr_dbg("Frame size: %d.", devc->framesize); | |
282 | cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; | |
283 | ||
284 | /* Timebase fast */ | |
285 | sr_dbg("Time base index: %d.", devc->timebase); | |
286 | if (devc->framesize == FRAMESIZE_SMALL) { | |
287 | if (devc->timebase < TIME_20us) | |
288 | tmp = 0; | |
289 | else if (devc->timebase == TIME_20us) | |
290 | tmp = 1; | |
291 | else if (devc->timebase == TIME_40us) | |
292 | tmp = 2; | |
293 | else if (devc->timebase == TIME_100us) | |
294 | tmp = 3; | |
295 | else if (devc->timebase >= TIME_200us) | |
296 | tmp = 4; | |
297 | } else { | |
298 | if (devc->timebase < TIME_40us) { | |
299 | sr_err("Timebase < 40us only supported with 10K buffer."); | |
300 | return SR_ERR_ARG; | |
301 | } | |
302 | else if (devc->timebase == TIME_40us) | |
303 | tmp = 0; | |
304 | else if (devc->timebase == TIME_100us) | |
305 | tmp = 2; | |
306 | else if (devc->timebase == TIME_200us) | |
307 | tmp = 3; | |
308 | else if (devc->timebase >= TIME_400us) | |
309 | tmp = 4; | |
310 | } | |
311 | cmdstring[2] |= (tmp & 0x07) << 5; | |
312 | ||
313 | /* Enabled channels: 00=CH1 01=CH2 10=both */ | |
314 | sr_dbg("Channels CH1=%d CH2=%d", devc->ch_enabled[0], devc->ch_enabled[1]); | |
315 | tmp = (((devc->ch_enabled[1] ? 1 : 0) << 1) + (devc->ch_enabled[0] ? 1 : 0)) - 1; | |
316 | cmdstring[3] = tmp; | |
317 | ||
318 | /* Fast rates channel */ | |
319 | /* TODO: Is this right? */ | |
320 | tmp = devc->timebase < TIME_10us ? 1 : 0; | |
321 | cmdstring[3] |= tmp << 2; | |
322 | ||
323 | /* Trigger slope: 0=positive 1=negative */ | |
324 | /* TODO: Does this work? */ | |
325 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
326 | cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; | |
327 | ||
328 | /* Timebase slow */ | |
329 | if (devc->timebase < TIME_100us) | |
330 | tmp = 0; | |
331 | else if (devc->timebase > TIME_400ms) | |
332 | tmp = 0xffed; | |
333 | else { | |
334 | if (devc->framesize == FRAMESIZE_SMALL) | |
335 | tmp = timebase_small[devc->timebase - 3]; | |
336 | else | |
337 | tmp = timebase_large[devc->timebase - 3]; | |
338 | } | |
339 | cmdstring[4] = tmp & 0xff; | |
340 | cmdstring[5] = (tmp >> 8) & 0xff; | |
341 | ||
342 | /* Horizontal trigger position */ | |
343 | sr_dbg("Trigger position: %3.2f.", devc->triggerposition); | |
344 | tmp = 0x77fff + 0x8000 * devc->triggerposition; | |
345 | cmdstring[6] = tmp & 0xff; | |
346 | cmdstring[7] = (tmp >> 8) & 0xff; | |
347 | cmdstring[10] = (tmp >> 16) & 0xff; | |
348 | ||
349 | if (send_begin(sdi) != SR_OK) | |
350 | return SR_ERR; | |
351 | ||
352 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
353 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
354 | sr_err("Failed to set trigger/samplerate: %s.", | |
355 | libusb_error_name(ret)); | |
356 | return SR_ERR; | |
357 | } | |
358 | sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); | |
359 | ||
360 | return SR_OK; | |
361 | } | |
362 | ||
363 | static int dso_set_filters(const struct sr_dev_inst *sdi) | |
364 | { | |
365 | struct dev_context *devc; | |
366 | struct sr_usb_dev_inst *usb; | |
367 | int ret, tmp; | |
368 | uint8_t cmdstring[8]; | |
369 | ||
370 | sr_dbg("Preparing CMD_SET_FILTERS."); | |
371 | ||
372 | devc = sdi->priv; | |
373 | usb = sdi->conn; | |
374 | ||
375 | memset(cmdstring, 0, sizeof(cmdstring)); | |
376 | cmdstring[0] = CMD_SET_FILTERS; | |
377 | cmdstring[1] = 0x0f; | |
378 | if (devc->filter[0]) { | |
379 | sr_dbg("Turning on CH1 filter."); | |
380 | cmdstring[2] |= 0x80; | |
381 | } | |
382 | if (devc->filter[1]) { | |
383 | sr_dbg("Turning on CH2 filter."); | |
384 | cmdstring[2] |= 0x40; | |
385 | } | |
386 | /* | |
387 | * Not supported: filtering on the trigger | |
388 | * cmdstring[2] |= 0x20; | |
389 | */ | |
390 | ||
391 | if (send_begin(sdi) != SR_OK) | |
392 | return SR_ERR; | |
393 | ||
394 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
395 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
396 | sr_err("Failed to set filters: %s.", libusb_error_name(ret)); | |
397 | return SR_ERR; | |
398 | } | |
399 | sr_dbg("Sent CMD_SET_FILTERS."); | |
400 | ||
401 | return SR_OK; | |
402 | } | |
403 | ||
404 | static int dso_set_voltage(const struct sr_dev_inst *sdi) | |
405 | { | |
406 | struct dev_context *devc; | |
407 | struct sr_usb_dev_inst *usb; | |
408 | int ret, tmp; | |
409 | uint8_t cmdstring[8]; | |
410 | ||
411 | sr_dbg("Preparing CMD_SET_VOLTAGE."); | |
412 | ||
413 | devc = sdi->priv; | |
414 | usb = sdi->conn; | |
415 | ||
416 | memset(cmdstring, 0, sizeof(cmdstring)); | |
417 | cmdstring[0] = CMD_SET_VOLTAGE; | |
418 | cmdstring[1] = 0x0f; | |
419 | cmdstring[2] = 0x30; | |
420 | ||
421 | /* CH1 volts/div is encoded in bits 0-1 */ | |
422 | sr_dbg("CH1 vdiv index: %d.", devc->voltage[0]); | |
423 | switch (devc->voltage[0]) { | |
424 | case VDIV_1V: | |
425 | case VDIV_100MV: | |
426 | case VDIV_10MV: | |
427 | cmdstring[2] |= 0x00; | |
428 | break; | |
429 | case VDIV_2V: | |
430 | case VDIV_200MV: | |
431 | case VDIV_20MV: | |
432 | cmdstring[2] |= 0x01; | |
433 | break; | |
434 | case VDIV_5V: | |
435 | case VDIV_500MV: | |
436 | case VDIV_50MV: | |
437 | cmdstring[2] |= 0x02; | |
438 | break; | |
439 | } | |
440 | ||
441 | /* CH2 volts/div is encoded in bits 2-3 */ | |
442 | sr_dbg("CH2 vdiv index: %d.", devc->voltage[1]); | |
443 | switch (devc->voltage[1]) { | |
444 | case VDIV_1V: | |
445 | case VDIV_100MV: | |
446 | case VDIV_10MV: | |
447 | cmdstring[2] |= 0x00; | |
448 | break; | |
449 | case VDIV_2V: | |
450 | case VDIV_200MV: | |
451 | case VDIV_20MV: | |
452 | cmdstring[2] |= 0x04; | |
453 | break; | |
454 | case VDIV_5V: | |
455 | case VDIV_500MV: | |
456 | case VDIV_50MV: | |
457 | cmdstring[2] |= 0x08; | |
458 | break; | |
459 | } | |
460 | ||
461 | if (send_begin(sdi) != SR_OK) | |
462 | return SR_ERR; | |
463 | ||
464 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
465 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
466 | sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); | |
467 | return SR_ERR; | |
468 | } | |
469 | sr_dbg("Sent CMD_SET_VOLTAGE."); | |
470 | ||
471 | return SR_OK; | |
472 | } | |
473 | ||
474 | static int dso_set_relays(const struct sr_dev_inst *sdi) | |
475 | { | |
476 | struct dev_context *devc; | |
477 | struct sr_usb_dev_inst *usb; | |
478 | GString *gs; | |
479 | int ret, i; | |
480 | uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
481 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
482 | ||
483 | sr_dbg("Preparing CTRL_SETRELAYS."); | |
484 | ||
485 | devc = sdi->priv; | |
486 | usb = sdi->conn; | |
487 | ||
488 | if (devc->voltage[0] < VDIV_1V) | |
489 | relays[1] = ~relays[1]; | |
490 | ||
491 | if (devc->voltage[0] < VDIV_100MV) | |
492 | relays[2] = ~relays[2]; | |
493 | ||
494 | sr_dbg("CH1 coupling: %d.", devc->coupling[0]); | |
495 | if (devc->coupling[0] != COUPLING_AC) | |
496 | relays[3] = ~relays[3]; | |
497 | ||
498 | if (devc->voltage[1] < VDIV_1V) | |
499 | relays[4] = ~relays[4]; | |
500 | ||
501 | if (devc->voltage[1] < VDIV_100MV) | |
502 | relays[5] = ~relays[5]; | |
503 | ||
504 | sr_dbg("CH2 coupling: %d.", devc->coupling[1]); | |
505 | if (devc->coupling[1] != COUPLING_AC) | |
506 | relays[6] = ~relays[6]; | |
507 | ||
508 | if (!strcmp(devc->triggersource, "EXT")) | |
509 | relays[7] = ~relays[7]; | |
510 | ||
511 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
512 | gs = g_string_sized_new(128); | |
513 | g_string_printf(gs, "Relays:"); | |
514 | for (i = 0; i < 17; i++) | |
515 | g_string_append_printf(gs, " %.2x", relays[i]); | |
516 | sr_dbg("%s", gs->str); | |
517 | g_string_free(gs, TRUE); | |
518 | } | |
519 | ||
520 | if ((ret = libusb_control_transfer(usb->devhdl, | |
521 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, | |
522 | 0, 0, relays, 17, 100)) != sizeof(relays)) { | |
523 | sr_err("Failed to set relays: %s.", libusb_error_name(ret)); | |
524 | return SR_ERR; | |
525 | } | |
526 | sr_dbg("Sent CTRL_SETRELAYS."); | |
527 | ||
528 | return SR_OK; | |
529 | } | |
530 | ||
531 | static int dso_set_voffsets(const struct sr_dev_inst *sdi) | |
532 | { | |
533 | struct dev_context *devc; | |
534 | struct sr_usb_dev_inst *usb; | |
535 | int offset, ret; | |
536 | uint16_t *ch_levels; | |
537 | uint8_t offsets[17]; | |
538 | ||
539 | sr_dbg("Preparing CTRL_SETOFFSET."); | |
540 | ||
541 | devc = sdi->priv; | |
542 | usb = sdi->conn; | |
543 | ||
544 | memset(offsets, 0, sizeof(offsets)); | |
545 | /* Channel 1 */ | |
546 | ch_levels = devc->channel_levels[0][devc->voltage[0]]; | |
547 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; | |
548 | offsets[0] = (offset >> 8) | 0x20; | |
549 | offsets[1] = offset & 0xff; | |
550 | sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, | |
551 | offsets[0], offsets[1]); | |
552 | ||
553 | /* Channel 2 */ | |
554 | ch_levels = devc->channel_levels[1][devc->voltage[1]]; | |
555 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; | |
556 | offsets[2] = (offset >> 8) | 0x20; | |
557 | offsets[3] = offset & 0xff; | |
558 | sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, | |
559 | offsets[2], offsets[3]); | |
560 | ||
561 | /* Trigger */ | |
562 | offset = MAX_VERT_TRIGGER * devc->voffset_trigger; | |
563 | offsets[4] = (offset >> 8) | 0x20; | |
564 | offsets[5] = offset & 0xff; | |
565 | sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, | |
566 | offsets[4], offsets[5]); | |
567 | ||
568 | if ((ret = libusb_control_transfer(usb->devhdl, | |
569 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, | |
570 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
571 | sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); | |
572 | return SR_ERR; | |
573 | } | |
574 | sr_dbg("Sent CTRL_SETOFFSET."); | |
575 | ||
576 | return SR_OK; | |
577 | } | |
578 | ||
579 | SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) | |
580 | { | |
581 | struct sr_usb_dev_inst *usb; | |
582 | int ret, tmp; | |
583 | uint8_t cmdstring[2]; | |
584 | ||
585 | sr_dbg("Sending CMD_ENABLE_TRIGGER."); | |
586 | ||
587 | usb = sdi->conn; | |
588 | ||
589 | memset(cmdstring, 0, sizeof(cmdstring)); | |
590 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
591 | cmdstring[1] = 0x00; | |
592 | ||
593 | if (send_begin(sdi) != SR_OK) | |
594 | return SR_ERR; | |
595 | ||
596 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
597 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
598 | sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); | |
599 | return SR_ERR; | |
600 | } | |
601 | ||
602 | return SR_OK; | |
603 | } | |
604 | ||
605 | SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) | |
606 | { | |
607 | struct sr_usb_dev_inst *usb; | |
608 | int ret, tmp; | |
609 | uint8_t cmdstring[2]; | |
610 | ||
611 | sr_dbg("Sending CMD_FORCE_TRIGGER."); | |
612 | ||
613 | usb = sdi->conn; | |
614 | ||
615 | memset(cmdstring, 0, sizeof(cmdstring)); | |
616 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
617 | cmdstring[1] = 0x00; | |
618 | ||
619 | if (send_begin(sdi) != SR_OK) | |
620 | return SR_ERR; | |
621 | ||
622 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
623 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
624 | sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); | |
625 | return SR_ERR; | |
626 | } | |
627 | ||
628 | return SR_OK; | |
629 | } | |
630 | ||
631 | SR_PRIV int dso_init(const struct sr_dev_inst *sdi) | |
632 | { | |
633 | ||
634 | sr_dbg("Initializing DSO."); | |
635 | ||
636 | if (get_channel_offsets(sdi) != SR_OK) | |
637 | return SR_ERR; | |
638 | ||
639 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
640 | return SR_ERR; | |
641 | ||
642 | if (dso_set_filters(sdi) != SR_OK) | |
643 | return SR_ERR; | |
644 | ||
645 | if (dso_set_voltage(sdi) != SR_OK) | |
646 | return SR_ERR; | |
647 | ||
648 | if (dso_set_relays(sdi) != SR_OK) | |
649 | return SR_ERR; | |
650 | ||
651 | if (dso_set_voffsets(sdi) != SR_OK) | |
652 | return SR_ERR; | |
653 | ||
654 | if (dso_enable_trigger(sdi) != SR_OK) | |
655 | return SR_ERR; | |
656 | ||
657 | return SR_OK; | |
658 | } | |
659 | ||
660 | SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, | |
661 | uint8_t *capturestate, uint32_t *trigger_offset) | |
662 | { | |
663 | struct sr_usb_dev_inst *usb; | |
664 | int ret, tmp, i; | |
665 | unsigned int bitvalue, toff; | |
666 | uint8_t cmdstring[2], inbuf[512]; | |
667 | ||
668 | sr_dbg("Sending CMD_GET_CAPTURESTATE."); | |
669 | ||
670 | usb = sdi->conn; | |
671 | ||
672 | cmdstring[0] = CMD_GET_CAPTURESTATE; | |
673 | cmdstring[1] = 0; | |
674 | ||
675 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
676 | sr_dbg("Failed to send get_capturestate command: %s.", | |
677 | libusb_error_name(ret)); | |
678 | return SR_ERR; | |
679 | } | |
680 | ||
681 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, | |
682 | inbuf, 512, &tmp, 100)) != 0) { | |
683 | sr_dbg("Failed to get capturestate: %s.", | |
684 | libusb_error_name(ret)); | |
685 | return SR_ERR; | |
686 | } | |
687 | *capturestate = inbuf[0]; | |
688 | toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; | |
689 | ||
690 | /* | |
691 | * This conversion comes from the openhantek project. | |
692 | * Each set bit in the 24-bit value inverts all bits with a lower | |
693 | * value. No idea why the device reports the trigger point this way. | |
694 | */ | |
695 | bitvalue = 1; | |
696 | for (i = 0; i < 24; i++) { | |
697 | /* Each set bit inverts all bits with a lower value. */ | |
698 | if (toff & bitvalue) | |
699 | toff ^= bitvalue - 1; | |
700 | bitvalue <<= 1; | |
701 | } | |
702 | *trigger_offset = toff; | |
703 | ||
704 | return SR_OK; | |
705 | } | |
706 | ||
707 | SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) | |
708 | { | |
709 | int ret; | |
710 | uint8_t cmdstring[2]; | |
711 | ||
712 | sr_dbg("Sending CMD_CAPTURE_START."); | |
713 | ||
714 | cmdstring[0] = CMD_CAPTURE_START; | |
715 | cmdstring[1] = 0; | |
716 | ||
717 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
718 | sr_err("Failed to send capture_start command: %s.", | |
719 | libusb_error_name(ret)); | |
720 | return SR_ERR; | |
721 | } | |
722 | ||
723 | return SR_OK; | |
724 | } | |
725 | ||
726 | SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, | |
727 | libusb_transfer_cb_fn cb) | |
728 | { | |
729 | struct dev_context *devc; | |
730 | struct sr_usb_dev_inst *usb; | |
731 | struct libusb_transfer *transfer; | |
732 | int num_transfers, ret, i; | |
733 | uint8_t cmdstring[2]; | |
734 | unsigned char *buf; | |
735 | ||
736 | sr_dbg("Sending CMD_GET_CHANNELDATA."); | |
737 | ||
738 | devc = sdi->priv; | |
739 | usb = sdi->conn; | |
740 | ||
741 | cmdstring[0] = CMD_GET_CHANNELDATA; | |
742 | cmdstring[1] = 0; | |
743 | ||
744 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
745 | sr_err("Failed to get channel data: %s.", | |
746 | libusb_error_name(ret)); | |
747 | return SR_ERR; | |
748 | } | |
749 | ||
750 | /* TODO: DSO-2xxx only. */ | |
751 | num_transfers = devc->framesize * | |
752 | sizeof(unsigned short) / devc->epin_maxpacketsize; | |
753 | sr_dbg("Queueing up %d transfers.", num_transfers); | |
754 | for (i = 0; i < num_transfers; i++) { | |
755 | if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { | |
756 | sr_err("Failed to malloc USB endpoint buffer."); | |
757 | return SR_ERR_MALLOC; | |
758 | } | |
759 | transfer = libusb_alloc_transfer(0); | |
760 | libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, | |
761 | devc->epin_maxpacketsize, cb, (void *)sdi, 40); | |
762 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
763 | sr_err("Failed to submit transfer: %s.", | |
764 | libusb_error_name(ret)); | |
765 | /* TODO: Free them all. */ | |
766 | libusb_free_transfer(transfer); | |
767 | g_free(buf); | |
768 | return SR_ERR; | |
769 | } | |
770 | } | |
771 | ||
772 | return SR_OK; | |
773 | } |