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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 <string.h> | |
23 | #include <glib.h> | |
24 | #include <libusb.h> | |
25 | #include "libsigrok.h" | |
26 | #include "libsigrok-internal.h" | |
27 | #include "dso.h" | |
28 | ||
29 | #define NUM_CHANNELS 2 | |
30 | ||
31 | extern struct sr_dev_driver hantek_dso_driver_info; | |
32 | ||
33 | static int send_begin(const struct sr_dev_inst *sdi) | |
34 | { | |
35 | struct sr_usb_dev_inst *usb; | |
36 | int ret; | |
37 | unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, | |
38 | 0x00, 0x01, 0x00}; | |
39 | ||
40 | sr_dbg("Sending CTRL_BEGINCOMMAND."); | |
41 | ||
42 | usb = sdi->conn; | |
43 | if ((ret = libusb_control_transfer(usb->devhdl, | |
44 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND, | |
45 | 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) { | |
46 | sr_err("Failed to send begincommand: %s.", | |
47 | libusb_error_name(ret)); | |
48 | return SR_ERR; | |
49 | } | |
50 | ||
51 | return SR_OK; | |
52 | } | |
53 | ||
54 | static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen) | |
55 | { | |
56 | struct sr_usb_dev_inst *usb; | |
57 | int ret, tmp; | |
58 | ||
59 | usb = sdi->conn; | |
60 | ||
61 | if (send_begin(sdi) != SR_OK) | |
62 | return SR_ERR; | |
63 | ||
64 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring, | |
65 | cmdlen, &tmp, 200)) != 0) | |
66 | return SR_ERR; | |
67 | ||
68 | return SR_OK; | |
69 | } | |
70 | ||
71 | static int dso_getmps(libusb_device *dev) | |
72 | { | |
73 | struct libusb_device_descriptor des; | |
74 | struct libusb_config_descriptor *conf_dsc; | |
75 | const struct libusb_interface_descriptor *intf_dsc; | |
76 | int mps; | |
77 | ||
78 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
79 | return 0; | |
80 | ||
81 | if (des.bNumConfigurations != 1) | |
82 | return 0; | |
83 | ||
84 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) | |
85 | return 0; | |
86 | ||
87 | mps = 0; | |
88 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
89 | if (intf_dsc->bNumEndpoints != 2) | |
90 | goto err; | |
91 | ||
92 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != | |
93 | (2 | LIBUSB_ENDPOINT_OUT)) | |
94 | /* The first endpoint should be 2 (outbound). */ | |
95 | goto err; | |
96 | ||
97 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != | |
98 | (6 | LIBUSB_ENDPOINT_IN)) | |
99 | /* The second endpoint should be 6 (inbound). */ | |
100 | goto err; | |
101 | ||
102 | mps = intf_dsc->endpoint[1].wMaxPacketSize; | |
103 | ||
104 | err: | |
105 | if (conf_dsc) | |
106 | libusb_free_config_descriptor(conf_dsc); | |
107 | ||
108 | return mps; | |
109 | } | |
110 | ||
111 | SR_PRIV int dso_open(struct sr_dev_inst *sdi) | |
112 | { | |
113 | struct dev_context *devc; | |
114 | struct drv_context *drvc = hantek_dso_driver_info.priv; | |
115 | struct sr_usb_dev_inst *usb; | |
116 | struct libusb_device_descriptor des; | |
117 | libusb_device **devlist; | |
118 | int err, i; | |
119 | char connection_id[64]; | |
120 | ||
121 | devc = sdi->priv; | |
122 | usb = sdi->conn; | |
123 | ||
124 | if (sdi->status == SR_ST_ACTIVE) | |
125 | /* already in use */ | |
126 | return SR_ERR; | |
127 | ||
128 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
129 | for (i = 0; devlist[i]; i++) { | |
130 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
131 | sr_err("Failed to get device descriptor: %s.", | |
132 | libusb_error_name(err)); | |
133 | continue; | |
134 | } | |
135 | ||
136 | if (des.idVendor != devc->profile->fw_vid | |
137 | || des.idProduct != devc->profile->fw_pid) | |
138 | continue; | |
139 | ||
140 | if ((sdi->status == SR_ST_INITIALIZING) || | |
141 | (sdi->status == SR_ST_INACTIVE)) { | |
142 | /* | |
143 | * Check device by its physical USB bus/port address. | |
144 | */ | |
145 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
146 | if (strcmp(sdi->connection_id, connection_id)) | |
147 | /* This is not the one. */ | |
148 | continue; | |
149 | } | |
150 | ||
151 | if (!(err = libusb_open(devlist[i], &usb->devhdl))) { | |
152 | if (usb->address == 0xff) | |
153 | /* | |
154 | * first time we touch this device after firmware upload, | |
155 | * so we don't know the address yet. | |
156 | */ | |
157 | usb->address = libusb_get_device_address(devlist[i]); | |
158 | ||
159 | if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) | |
160 | sr_err("Wrong endpoint profile."); | |
161 | else { | |
162 | sdi->status = SR_ST_ACTIVE; | |
163 | sr_info("Opened device on %d.%d (logical) / " | |
164 | "%s (physical) interface %d.", | |
165 | usb->bus, usb->address, | |
166 | sdi->connection_id, USB_INTERFACE); | |
167 | } | |
168 | } else { | |
169 | sr_err("Failed to open device: %s.", | |
170 | libusb_error_name(err)); | |
171 | } | |
172 | ||
173 | /* If we made it here, we handled the device (somehow). */ | |
174 | break; | |
175 | } | |
176 | libusb_free_device_list(devlist, 1); | |
177 | ||
178 | if (sdi->status != SR_ST_ACTIVE) | |
179 | return SR_ERR; | |
180 | ||
181 | return SR_OK; | |
182 | } | |
183 | ||
184 | SR_PRIV void dso_close(struct sr_dev_inst *sdi) | |
185 | { | |
186 | struct sr_usb_dev_inst *usb; | |
187 | ||
188 | usb = sdi->conn; | |
189 | ||
190 | if (!usb->devhdl) | |
191 | return; | |
192 | ||
193 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
194 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
195 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
196 | libusb_close(usb->devhdl); | |
197 | usb->devhdl = NULL; | |
198 | sdi->status = SR_ST_INACTIVE; | |
199 | ||
200 | } | |
201 | ||
202 | static int get_channel_offsets(const struct sr_dev_inst *sdi) | |
203 | { | |
204 | struct dev_context *devc; | |
205 | struct sr_usb_dev_inst *usb; | |
206 | GString *gs; | |
207 | int chan, v, ret; | |
208 | ||
209 | sr_dbg("Getting channel offsets."); | |
210 | ||
211 | devc = sdi->priv; | |
212 | usb = sdi->conn; | |
213 | ||
214 | ret = libusb_control_transfer(usb->devhdl, | |
215 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, | |
216 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
217 | (unsigned char *)&devc->channel_levels, | |
218 | sizeof(devc->channel_levels), 200); | |
219 | if (ret != sizeof(devc->channel_levels)) { | |
220 | sr_err("Failed to get channel offsets: %s.", | |
221 | libusb_error_name(ret)); | |
222 | return SR_ERR; | |
223 | } | |
224 | ||
225 | /* Comes in as 16-bit numbers with the second byte always 0 on | |
226 | * the DSO-2090. Guessing this is supposed to be big-endian, | |
227 | * since that's how voltage offsets are submitted back to the DSO. | |
228 | * Convert to host order now, so we can use them natively. | |
229 | */ | |
230 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
231 | for (v = 0; v < 9; v++) { | |
232 | devc->channel_levels[chan][v][0] = | |
233 | g_ntohs(devc->channel_levels[chan][v][0]); | |
234 | devc->channel_levels[chan][v][1] = | |
235 | g_ntohs(devc->channel_levels[chan][v][1]); | |
236 | } | |
237 | } | |
238 | ||
239 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
240 | gs = g_string_sized_new(128); | |
241 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
242 | g_string_printf(gs, "CH%d:", chan + 1); | |
243 | for (v = 0; v < 9; v++) { | |
244 | g_string_append_printf(gs, " %.4x-%.4x", | |
245 | devc->channel_levels[chan][v][0], | |
246 | devc->channel_levels[chan][v][1]); | |
247 | } | |
248 | sr_dbg("%s", gs->str); | |
249 | } | |
250 | g_string_free(gs, TRUE); | |
251 | } | |
252 | ||
253 | return SR_OK; | |
254 | } | |
255 | ||
256 | static int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) | |
257 | { | |
258 | struct dev_context *devc; | |
259 | struct sr_usb_dev_inst *usb; | |
260 | int ret, tmp; | |
261 | uint8_t cmdstring[12]; | |
262 | uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, | |
263 | 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; | |
264 | uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, | |
265 | 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; | |
266 | ||
267 | sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); | |
268 | ||
269 | devc = sdi->priv; | |
270 | usb = sdi->conn; | |
271 | ||
272 | memset(cmdstring, 0, sizeof(cmdstring)); | |
273 | /* Command */ | |
274 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
275 | ||
276 | /* Trigger source */ | |
277 | sr_dbg("Trigger source %s.", devc->triggersource); | |
278 | if (!strcmp("CH2", devc->triggersource)) | |
279 | tmp = 0; | |
280 | else if (!strcmp("CH1", devc->triggersource)) | |
281 | tmp = 1; | |
282 | else if (!strcmp("EXT", devc->triggersource)) | |
283 | tmp = 2; | |
284 | else { | |
285 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); | |
286 | return SR_ERR_ARG; | |
287 | } | |
288 | cmdstring[2] = tmp; | |
289 | ||
290 | /* Frame size */ | |
291 | sr_dbg("Frame size: %d.", devc->framesize); | |
292 | cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; | |
293 | ||
294 | /* Timebase fast */ | |
295 | sr_dbg("Time base index: %d.", devc->timebase); | |
296 | if (devc->framesize == FRAMESIZE_SMALL) { | |
297 | if (devc->timebase < TIME_20us) | |
298 | tmp = 0; | |
299 | else if (devc->timebase == TIME_20us) | |
300 | tmp = 1; | |
301 | else if (devc->timebase == TIME_40us) | |
302 | tmp = 2; | |
303 | else if (devc->timebase == TIME_100us) | |
304 | tmp = 3; | |
305 | else if (devc->timebase >= TIME_200us) | |
306 | tmp = 4; | |
307 | } else { | |
308 | if (devc->timebase < TIME_40us) { | |
309 | sr_err("Timebase < 40us only supported with 10K buffer."); | |
310 | return SR_ERR_ARG; | |
311 | } | |
312 | else if (devc->timebase == TIME_40us) | |
313 | tmp = 0; | |
314 | else if (devc->timebase == TIME_100us) | |
315 | tmp = 2; | |
316 | else if (devc->timebase == TIME_200us) | |
317 | tmp = 3; | |
318 | else if (devc->timebase >= TIME_400us) | |
319 | tmp = 4; | |
320 | } | |
321 | cmdstring[2] |= (tmp & 0x07) << 5; | |
322 | ||
323 | /* Enabled channels: 00=CH1 01=CH2 10=both */ | |
324 | sr_dbg("Channels CH1=%d CH2=%d", devc->ch1_enabled, devc->ch2_enabled); | |
325 | tmp = (((devc->ch2_enabled ? 1 : 0) << 1) + (devc->ch1_enabled ? 1 : 0)) - 1; | |
326 | cmdstring[3] = tmp; | |
327 | ||
328 | /* Fast rates channel */ | |
329 | /* TODO: Is this right? */ | |
330 | tmp = devc->timebase < TIME_10us ? 1 : 0; | |
331 | cmdstring[3] |= tmp << 2; | |
332 | ||
333 | /* Trigger slope: 0=positive 1=negative */ | |
334 | /* TODO: Does this work? */ | |
335 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
336 | cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; | |
337 | ||
338 | /* Timebase slow */ | |
339 | if (devc->timebase < TIME_100us) | |
340 | tmp = 0; | |
341 | else if (devc->timebase > TIME_400ms) | |
342 | tmp = 0xffed; | |
343 | else { | |
344 | if (devc->framesize == FRAMESIZE_SMALL) | |
345 | tmp = timebase_small[devc->timebase - 3]; | |
346 | else | |
347 | tmp = timebase_large[devc->timebase - 3]; | |
348 | } | |
349 | cmdstring[4] = tmp & 0xff; | |
350 | cmdstring[5] = (tmp >> 8) & 0xff; | |
351 | ||
352 | /* Horizontal trigger position */ | |
353 | sr_dbg("Trigger position: %3.2f.", devc->triggerposition); | |
354 | tmp = 0x77fff + 0x8000 * devc->triggerposition; | |
355 | cmdstring[6] = tmp & 0xff; | |
356 | cmdstring[7] = (tmp >> 8) & 0xff; | |
357 | cmdstring[10] = (tmp >> 16) & 0xff; | |
358 | ||
359 | if (send_begin(sdi) != SR_OK) | |
360 | return SR_ERR; | |
361 | ||
362 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
363 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
364 | sr_err("Failed to set trigger/samplerate: %s.", | |
365 | libusb_error_name(ret)); | |
366 | return SR_ERR; | |
367 | } | |
368 | sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); | |
369 | ||
370 | return SR_OK; | |
371 | } | |
372 | ||
373 | static int dso_set_filters(const struct sr_dev_inst *sdi) | |
374 | { | |
375 | struct dev_context *devc; | |
376 | struct sr_usb_dev_inst *usb; | |
377 | int ret, tmp; | |
378 | uint8_t cmdstring[8]; | |
379 | ||
380 | sr_dbg("Preparing CMD_SET_FILTERS."); | |
381 | ||
382 | devc = sdi->priv; | |
383 | usb = sdi->conn; | |
384 | ||
385 | memset(cmdstring, 0, sizeof(cmdstring)); | |
386 | cmdstring[0] = CMD_SET_FILTERS; | |
387 | cmdstring[1] = 0x0f; | |
388 | if (devc->filter[0]) { | |
389 | sr_dbg("Turning on CH1 filter."); | |
390 | cmdstring[2] |= 0x80; | |
391 | } | |
392 | if (devc->filter[1]) { | |
393 | sr_dbg("Turning on CH2 filter."); | |
394 | cmdstring[2] |= 0x40; | |
395 | } | |
396 | /* | |
397 | * Not supported: filtering on the trigger | |
398 | * cmdstring[2] |= 0x20; | |
399 | */ | |
400 | ||
401 | if (send_begin(sdi) != SR_OK) | |
402 | return SR_ERR; | |
403 | ||
404 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
405 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
406 | sr_err("Failed to set filters: %s.", libusb_error_name(ret)); | |
407 | return SR_ERR; | |
408 | } | |
409 | sr_dbg("Sent CMD_SET_FILTERS."); | |
410 | ||
411 | return SR_OK; | |
412 | } | |
413 | ||
414 | static int dso_set_voltage(const struct sr_dev_inst *sdi) | |
415 | { | |
416 | struct dev_context *devc; | |
417 | struct sr_usb_dev_inst *usb; | |
418 | int ret, tmp; | |
419 | uint8_t cmdstring[8]; | |
420 | ||
421 | sr_dbg("Preparing CMD_SET_VOLTAGE."); | |
422 | ||
423 | devc = sdi->priv; | |
424 | usb = sdi->conn; | |
425 | ||
426 | memset(cmdstring, 0, sizeof(cmdstring)); | |
427 | cmdstring[0] = CMD_SET_VOLTAGE; | |
428 | cmdstring[1] = 0x0f; | |
429 | cmdstring[2] = 0x30; | |
430 | ||
431 | /* CH1 volts/div is encoded in bits 0-1 */ | |
432 | sr_dbg("CH1 vdiv index: %d.", devc->voltage[0]); | |
433 | switch (devc->voltage[0]) { | |
434 | case VDIV_1V: | |
435 | case VDIV_100MV: | |
436 | case VDIV_10MV: | |
437 | cmdstring[2] |= 0x00; | |
438 | break; | |
439 | case VDIV_2V: | |
440 | case VDIV_200MV: | |
441 | case VDIV_20MV: | |
442 | cmdstring[2] |= 0x01; | |
443 | break; | |
444 | case VDIV_5V: | |
445 | case VDIV_500MV: | |
446 | case VDIV_50MV: | |
447 | cmdstring[2] |= 0x02; | |
448 | break; | |
449 | } | |
450 | ||
451 | /* CH2 volts/div is encoded in bits 2-3 */ | |
452 | sr_dbg("CH2 vdiv index: %d.", devc->voltage[1]); | |
453 | switch (devc->voltage[1]) { | |
454 | case VDIV_1V: | |
455 | case VDIV_100MV: | |
456 | case VDIV_10MV: | |
457 | cmdstring[2] |= 0x00; | |
458 | break; | |
459 | case VDIV_2V: | |
460 | case VDIV_200MV: | |
461 | case VDIV_20MV: | |
462 | cmdstring[2] |= 0x04; | |
463 | break; | |
464 | case VDIV_5V: | |
465 | case VDIV_500MV: | |
466 | case VDIV_50MV: | |
467 | cmdstring[2] |= 0x08; | |
468 | break; | |
469 | } | |
470 | ||
471 | if (send_begin(sdi) != SR_OK) | |
472 | return SR_ERR; | |
473 | ||
474 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
475 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
476 | sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); | |
477 | return SR_ERR; | |
478 | } | |
479 | sr_dbg("Sent CMD_SET_VOLTAGE."); | |
480 | ||
481 | return SR_OK; | |
482 | } | |
483 | ||
484 | static int dso_set_relays(const struct sr_dev_inst *sdi) | |
485 | { | |
486 | struct dev_context *devc; | |
487 | struct sr_usb_dev_inst *usb; | |
488 | GString *gs; | |
489 | int ret, i; | |
490 | uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
491 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
492 | ||
493 | sr_dbg("Preparing CTRL_SETRELAYS."); | |
494 | ||
495 | devc = sdi->priv; | |
496 | usb = sdi->conn; | |
497 | ||
498 | if (devc->voltage[0] < VDIV_1V) | |
499 | relays[1] = ~relays[1]; | |
500 | ||
501 | if (devc->voltage[0] < VDIV_100MV) | |
502 | relays[2] = ~relays[2]; | |
503 | ||
504 | sr_dbg("CH1 coupling: %d.", devc->coupling[0]); | |
505 | if (devc->coupling[0] != COUPLING_AC) | |
506 | relays[3] = ~relays[3]; | |
507 | ||
508 | if (devc->voltage[1] < VDIV_1V) | |
509 | relays[4] = ~relays[4]; | |
510 | ||
511 | if (devc->voltage[1] < VDIV_100MV) | |
512 | relays[5] = ~relays[5]; | |
513 | ||
514 | sr_dbg("CH2 coupling: %d.", devc->coupling[1]); | |
515 | if (devc->coupling[1] != COUPLING_AC) | |
516 | relays[6] = ~relays[6]; | |
517 | ||
518 | if (!strcmp(devc->triggersource, "EXT")) | |
519 | relays[7] = ~relays[7]; | |
520 | ||
521 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
522 | gs = g_string_sized_new(128); | |
523 | g_string_printf(gs, "Relays:"); | |
524 | for (i = 0; i < 17; i++) | |
525 | g_string_append_printf(gs, " %.2x", relays[i]); | |
526 | sr_dbg("%s", gs->str); | |
527 | g_string_free(gs, TRUE); | |
528 | } | |
529 | ||
530 | if ((ret = libusb_control_transfer(usb->devhdl, | |
531 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, | |
532 | 0, 0, relays, 17, 100)) != sizeof(relays)) { | |
533 | sr_err("Failed to set relays: %s.", libusb_error_name(ret)); | |
534 | return SR_ERR; | |
535 | } | |
536 | sr_dbg("Sent CTRL_SETRELAYS."); | |
537 | ||
538 | return SR_OK; | |
539 | } | |
540 | ||
541 | static int dso_set_voffsets(const struct sr_dev_inst *sdi) | |
542 | { | |
543 | struct dev_context *devc; | |
544 | struct sr_usb_dev_inst *usb; | |
545 | int offset, ret; | |
546 | uint16_t *ch_levels; | |
547 | uint8_t offsets[17]; | |
548 | ||
549 | sr_dbg("Preparing CTRL_SETOFFSET."); | |
550 | ||
551 | devc = sdi->priv; | |
552 | usb = sdi->conn; | |
553 | ||
554 | memset(offsets, 0, sizeof(offsets)); | |
555 | /* Channel 1 */ | |
556 | ch_levels = devc->channel_levels[0][devc->voltage[0]]; | |
557 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; | |
558 | offsets[0] = (offset >> 8) | 0x20; | |
559 | offsets[1] = offset & 0xff; | |
560 | sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, | |
561 | offsets[0], offsets[1]); | |
562 | ||
563 | /* Channel 2 */ | |
564 | ch_levels = devc->channel_levels[1][devc->voltage[1]]; | |
565 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; | |
566 | offsets[2] = (offset >> 8) | 0x20; | |
567 | offsets[3] = offset & 0xff; | |
568 | sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, | |
569 | offsets[2], offsets[3]); | |
570 | ||
571 | /* Trigger */ | |
572 | offset = MAX_VERT_TRIGGER * devc->voffset_trigger; | |
573 | offsets[4] = (offset >> 8) | 0x20; | |
574 | offsets[5] = offset & 0xff; | |
575 | sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, | |
576 | offsets[4], offsets[5]); | |
577 | ||
578 | if ((ret = libusb_control_transfer(usb->devhdl, | |
579 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, | |
580 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
581 | sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); | |
582 | return SR_ERR; | |
583 | } | |
584 | sr_dbg("Sent CTRL_SETOFFSET."); | |
585 | ||
586 | return SR_OK; | |
587 | } | |
588 | ||
589 | SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) | |
590 | { | |
591 | struct sr_usb_dev_inst *usb; | |
592 | int ret, tmp; | |
593 | uint8_t cmdstring[2]; | |
594 | ||
595 | sr_dbg("Sending CMD_ENABLE_TRIGGER."); | |
596 | ||
597 | usb = sdi->conn; | |
598 | ||
599 | memset(cmdstring, 0, sizeof(cmdstring)); | |
600 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
601 | cmdstring[1] = 0x00; | |
602 | ||
603 | if (send_begin(sdi) != SR_OK) | |
604 | return SR_ERR; | |
605 | ||
606 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
607 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
608 | sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); | |
609 | return SR_ERR; | |
610 | } | |
611 | ||
612 | return SR_OK; | |
613 | } | |
614 | ||
615 | SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) | |
616 | { | |
617 | struct sr_usb_dev_inst *usb; | |
618 | int ret, tmp; | |
619 | uint8_t cmdstring[2]; | |
620 | ||
621 | sr_dbg("Sending CMD_FORCE_TRIGGER."); | |
622 | ||
623 | usb = sdi->conn; | |
624 | ||
625 | memset(cmdstring, 0, sizeof(cmdstring)); | |
626 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
627 | cmdstring[1] = 0x00; | |
628 | ||
629 | if (send_begin(sdi) != SR_OK) | |
630 | return SR_ERR; | |
631 | ||
632 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
633 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
634 | sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); | |
635 | return SR_ERR; | |
636 | } | |
637 | ||
638 | return SR_OK; | |
639 | } | |
640 | ||
641 | SR_PRIV int dso_init(const struct sr_dev_inst *sdi) | |
642 | { | |
643 | ||
644 | sr_dbg("Initializing DSO."); | |
645 | ||
646 | if (get_channel_offsets(sdi) != SR_OK) | |
647 | return SR_ERR; | |
648 | ||
649 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
650 | return SR_ERR; | |
651 | ||
652 | if (dso_set_filters(sdi) != SR_OK) | |
653 | return SR_ERR; | |
654 | ||
655 | if (dso_set_voltage(sdi) != SR_OK) | |
656 | return SR_ERR; | |
657 | ||
658 | if (dso_set_relays(sdi) != SR_OK) | |
659 | return SR_ERR; | |
660 | ||
661 | if (dso_set_voffsets(sdi) != SR_OK) | |
662 | return SR_ERR; | |
663 | ||
664 | if (dso_enable_trigger(sdi) != SR_OK) | |
665 | return SR_ERR; | |
666 | ||
667 | return SR_OK; | |
668 | } | |
669 | ||
670 | SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, | |
671 | uint8_t *capturestate, uint32_t *trigger_offset) | |
672 | { | |
673 | struct sr_usb_dev_inst *usb; | |
674 | int ret, tmp, i; | |
675 | unsigned int bitvalue, toff; | |
676 | uint8_t cmdstring[2], inbuf[512]; | |
677 | ||
678 | sr_dbg("Sending CMD_GET_CAPTURESTATE."); | |
679 | ||
680 | usb = sdi->conn; | |
681 | ||
682 | cmdstring[0] = CMD_GET_CAPTURESTATE; | |
683 | cmdstring[1] = 0; | |
684 | ||
685 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
686 | sr_dbg("Failed to send get_capturestate command: %s.", | |
687 | libusb_error_name(ret)); | |
688 | return SR_ERR; | |
689 | } | |
690 | ||
691 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, | |
692 | inbuf, 512, &tmp, 100)) != 0) { | |
693 | sr_dbg("Failed to get capturestate: %s.", | |
694 | libusb_error_name(ret)); | |
695 | return SR_ERR; | |
696 | } | |
697 | *capturestate = inbuf[0]; | |
698 | toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; | |
699 | ||
700 | /* | |
701 | * This conversion comes from the openhantek project. | |
702 | * Each set bit in the 24-bit value inverts all bits with a lower | |
703 | * value. No idea why the device reports the trigger point this way. | |
704 | */ | |
705 | bitvalue = 1; | |
706 | for (i = 0; i < 24; i++) { | |
707 | /* Each set bit inverts all bits with a lower value. */ | |
708 | if (toff & bitvalue) | |
709 | toff ^= bitvalue - 1; | |
710 | bitvalue <<= 1; | |
711 | } | |
712 | *trigger_offset = toff; | |
713 | ||
714 | return SR_OK; | |
715 | } | |
716 | ||
717 | SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) | |
718 | { | |
719 | int ret; | |
720 | uint8_t cmdstring[2]; | |
721 | ||
722 | sr_dbg("Sending CMD_CAPTURE_START."); | |
723 | ||
724 | cmdstring[0] = CMD_CAPTURE_START; | |
725 | cmdstring[1] = 0; | |
726 | ||
727 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
728 | sr_err("Failed to send capture_start command: %s.", | |
729 | libusb_error_name(ret)); | |
730 | return SR_ERR; | |
731 | } | |
732 | ||
733 | return SR_OK; | |
734 | } | |
735 | ||
736 | SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, | |
737 | libusb_transfer_cb_fn cb) | |
738 | { | |
739 | struct dev_context *devc; | |
740 | struct sr_usb_dev_inst *usb; | |
741 | struct libusb_transfer *transfer; | |
742 | int num_transfers, ret, i; | |
743 | uint8_t cmdstring[2]; | |
744 | unsigned char *buf; | |
745 | ||
746 | sr_dbg("Sending CMD_GET_CHANNELDATA."); | |
747 | ||
748 | devc = sdi->priv; | |
749 | usb = sdi->conn; | |
750 | ||
751 | cmdstring[0] = CMD_GET_CHANNELDATA; | |
752 | cmdstring[1] = 0; | |
753 | ||
754 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
755 | sr_err("Failed to get channel data: %s.", | |
756 | libusb_error_name(ret)); | |
757 | return SR_ERR; | |
758 | } | |
759 | ||
760 | /* TODO: DSO-2xxx only. */ | |
761 | num_transfers = devc->framesize * | |
762 | sizeof(unsigned short) / devc->epin_maxpacketsize; | |
763 | sr_dbg("Queueing up %d transfers.", num_transfers); | |
764 | for (i = 0; i < num_transfers; i++) { | |
765 | if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { | |
766 | sr_err("Failed to malloc USB endpoint buffer."); | |
767 | return SR_ERR_MALLOC; | |
768 | } | |
769 | transfer = libusb_alloc_transfer(0); | |
770 | libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, | |
771 | devc->epin_maxpacketsize, cb, (void *)sdi, 40); | |
772 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
773 | sr_err("Failed to submit transfer: %s.", | |
774 | libusb_error_name(ret)); | |
775 | /* TODO: Free them all. */ | |
776 | libusb_free_transfer(transfer); | |
777 | g_free(buf); | |
778 | return SR_ERR; | |
779 | } | |
780 | } | |
781 | ||
782 | return SR_OK; | |
783 | } |