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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 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) | |
134 | continue; | |
135 | ||
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 | static int get_channel_offsets(const struct sr_dev_inst *sdi) | |
192 | { | |
193 | struct dev_context *devc; | |
194 | struct sr_usb_dev_inst *usb; | |
195 | GString *gs; | |
196 | int chan, v, ret; | |
197 | ||
198 | sr_dbg("Getting channel offsets."); | |
199 | ||
200 | devc = sdi->priv; | |
201 | usb = sdi->conn; | |
202 | ||
203 | ret = libusb_control_transfer(usb->devhdl, | |
204 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, | |
205 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
206 | (unsigned char *)&devc->channel_levels, | |
207 | sizeof(devc->channel_levels), 200); | |
208 | if (ret != sizeof(devc->channel_levels)) { | |
209 | sr_err("Failed to get channel offsets: %s.", | |
210 | libusb_error_name(ret)); | |
211 | return SR_ERR; | |
212 | } | |
213 | ||
214 | /* Comes in as 16-bit numbers with the second byte always 0 on | |
215 | * the DSO-2090. Guessing this is supposed to be big-endian, | |
216 | * since that's how voltage offsets are submitted back to the DSO. | |
217 | * Convert to host order now, so we can use them natively. | |
218 | */ | |
219 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
220 | for (v = 0; v < 9; v++) { | |
221 | devc->channel_levels[chan][v][0] = | |
222 | g_ntohs(devc->channel_levels[chan][v][0]); | |
223 | devc->channel_levels[chan][v][1] = | |
224 | g_ntohs(devc->channel_levels[chan][v][1]); | |
225 | } | |
226 | } | |
227 | ||
228 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
229 | gs = g_string_sized_new(128); | |
230 | for (chan = 0; chan < NUM_CHANNELS; chan++) { | |
231 | g_string_printf(gs, "CH%d:", chan + 1); | |
232 | for (v = 0; v < 9; v++) { | |
233 | g_string_append_printf(gs, " %.4x-%.4x", | |
234 | devc->channel_levels[chan][v][0], | |
235 | devc->channel_levels[chan][v][1]); | |
236 | } | |
237 | sr_dbg("%s", gs->str); | |
238 | } | |
239 | g_string_free(gs, TRUE); | |
240 | } | |
241 | ||
242 | return SR_OK; | |
243 | } | |
244 | ||
245 | static void dso2250_set_triggerpos(int value, int long_buffer, uint8_t dest[], int offset) | |
246 | { | |
247 | uint32_t min, max; | |
248 | uint32_t tmp, diff; | |
249 | ||
250 | min = long_buffer ? 0 : 0x7d7ff; | |
251 | max = 0x7ffff; | |
252 | ||
253 | diff = max - min; | |
254 | tmp = min + diff * value / 100; | |
255 | sr_dbg("2250 trigger pos: %3d%% * [0x%x,0x%x] == 0x%x", value, min, max, tmp); | |
256 | ||
257 | dest[offset + 0] = tmp & 0xff; | |
258 | dest[offset + 1] = (tmp >> 8) & 0xff; | |
259 | dest[offset + 2] = (tmp >> 16) & 0x7; | |
260 | } | |
261 | ||
262 | /* See http://openhantek.sourceforge.net/doc/namespaceHantek.html#ac1cd181814cf3da74771c29800b39028 */ | |
263 | static int dso2250_set_trigger_samplerate(const struct sr_dev_inst *sdi) | |
264 | { | |
265 | struct dev_context *devc; | |
266 | struct sr_usb_dev_inst *usb; | |
267 | int ret, tmp; | |
268 | uint64_t base; | |
269 | uint8_t cmdstring[12]; | |
270 | int trig; | |
271 | ||
272 | devc = sdi->priv; | |
273 | usb = sdi->conn; | |
274 | ||
275 | memset(cmdstring, 0, sizeof(cmdstring)); | |
276 | /* Command */ | |
277 | cmdstring[0] = CMD_2250_SET_TRIGGERSOURCE; | |
278 | sr_dbg("Trigger source %s.", devc->triggersource); | |
279 | if (!strcmp("CH2", devc->triggersource)) | |
280 | tmp = 3; | |
281 | else if (!strcmp("CH1", devc->triggersource)) | |
282 | tmp = 2; | |
283 | else if (!strcmp("EXT", devc->triggersource)) | |
284 | tmp = 0; | |
285 | else { | |
286 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); | |
287 | return SR_ERR_ARG; | |
288 | } | |
289 | cmdstring[2] = tmp; | |
290 | ||
291 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
292 | cmdstring[2] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; | |
293 | ||
294 | if (send_begin(sdi) != SR_OK) | |
295 | return SR_ERR; | |
296 | ||
297 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
298 | cmdstring, 8, &tmp, 100)) != 0) { | |
299 | sr_err("Failed to set trigger/samplerate: %s.", | |
300 | libusb_error_name(ret)); | |
301 | return SR_ERR; | |
302 | } | |
303 | ||
304 | /* Frame size */ | |
305 | sr_dbg("Frame size: %d.", devc->framesize); | |
306 | cmdstring[0] = CMD_2250_SET_RECORD_LENGTH; | |
307 | cmdstring[2] = (devc->framesize == FRAMESIZE_SMALL) ? 0x01 : 0x02; | |
308 | ||
309 | if (send_begin(sdi) != SR_OK) | |
310 | return SR_ERR; | |
311 | ||
312 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
313 | cmdstring, 4, &tmp, 100)) != 0) { | |
314 | sr_err("Failed to set record length: %s.", | |
315 | libusb_error_name(ret)); | |
316 | return SR_ERR; | |
317 | } | |
318 | ||
319 | memset(cmdstring, 0, sizeof(cmdstring)); | |
320 | cmdstring[0] = CMD_2250_SET_SAMPLERATE; | |
321 | base = 100e6; | |
322 | if (devc->samplerate > base) { | |
323 | /* Timebase fast */ | |
324 | sr_err("Sample rate > 100MHz not yet supported."); | |
325 | return SR_ERR_ARG; | |
326 | } | |
327 | ||
328 | tmp = base / devc->samplerate; | |
329 | /* Downsample only if really necessary */ | |
330 | if (tmp > 1) { | |
331 | /* Downsampling on */ | |
332 | cmdstring[2] |= 2; | |
333 | /* Downsampler = 1comp((Base / Samplerate) - 2) | |
334 | * Base == 100Msa resp. 200MSa | |
335 | * | |
336 | * Example for 500kSa/s: | |
337 | * 100e6 / 500e3 => 200 | |
338 | * 200 - 2 => 198 | |
339 | * 1comp(198) => ff39 */ | |
340 | tmp -= 2; | |
341 | tmp = ~tmp; | |
342 | sr_dbg("Down sampler value: 0x%x.", tmp & 0xffff); | |
343 | cmdstring[4] = (tmp >> 0) & 0xff; | |
344 | cmdstring[5] = (tmp >> 8) & 0xff; | |
345 | } | |
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, 8, &tmp, 100)) != 0) { | |
352 | sr_err("Failed to set sample rate: %s.", | |
353 | libusb_error_name(ret)); | |
354 | return SR_ERR; | |
355 | } | |
356 | sr_dbg("Sent CMD_2250_SET_SAMPLERATE."); | |
357 | ||
358 | /* Enabled channels: 00=CH1, 01=CH2, 10=both. */ | |
359 | memset(cmdstring, 0, sizeof(cmdstring)); | |
360 | cmdstring[0] = CMD_2250_SET_CHANNELS; | |
361 | sr_dbg("Channels: CH1=%d, CH2=%d.", devc->ch_enabled[0], devc->ch_enabled[1]); | |
362 | cmdstring[2] = (devc->ch_enabled[0] ? 0 : 1) + (devc->ch_enabled[1] ? 2 : 0); | |
363 | ||
364 | if (send_begin(sdi) != SR_OK) | |
365 | return SR_ERR; | |
366 | ||
367 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
368 | cmdstring, 4, &tmp, 100)) != 0) { | |
369 | sr_err("Failed to set channels: %s.", | |
370 | libusb_error_name(ret)); | |
371 | return SR_ERR; | |
372 | } | |
373 | sr_dbg("Sent CMD_2250_SET_CHANNELS."); | |
374 | ||
375 | /* Trigger slope: 0=positive, 1=negative. */ | |
376 | memset(cmdstring, 0, sizeof(cmdstring)); | |
377 | cmdstring[0] = CMD_2250_SET_TRIGGERPOS_AND_BUFFER; | |
378 | ||
379 | sr_dbg("Capture ratio: %" PRIu64 ".", devc->capture_ratio); | |
380 | trig = devc->capture_ratio; | |
381 | dso2250_set_triggerpos(trig, | |
382 | devc->framesize != FRAMESIZE_SMALL, cmdstring, 2); | |
383 | dso2250_set_triggerpos(100 - trig, | |
384 | devc->framesize != FRAMESIZE_SMALL, cmdstring, 6); | |
385 | ||
386 | if (send_begin(sdi) != SR_OK) | |
387 | return SR_ERR; | |
388 | ||
389 | /* TODO: 12 bytes according to documentation? */ | |
390 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
391 | cmdstring, 10, &tmp, 100)) != 0) { | |
392 | sr_err("Failed to set trigger position: %s.", | |
393 | libusb_error_name(ret)); | |
394 | return SR_ERR; | |
395 | } | |
396 | ||
397 | return SR_OK; | |
398 | } | |
399 | ||
400 | SR_PRIV int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) | |
401 | { | |
402 | struct dev_context *devc; | |
403 | struct sr_usb_dev_inst *usb; | |
404 | int ret, tmp; | |
405 | uint8_t cmdstring[12]; | |
406 | uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, | |
407 | 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; | |
408 | uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, | |
409 | 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; | |
410 | ||
411 | devc = sdi->priv; | |
412 | if (devc->profile->fw_pid == 0x2250) | |
413 | return dso2250_set_trigger_samplerate(sdi); | |
414 | ||
415 | sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); | |
416 | ||
417 | usb = sdi->conn; | |
418 | ||
419 | memset(cmdstring, 0, sizeof(cmdstring)); | |
420 | /* Command */ | |
421 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
422 | ||
423 | /* Trigger source */ | |
424 | sr_dbg("Trigger source %s.", devc->triggersource); | |
425 | if (!strcmp("CH2", devc->triggersource)) | |
426 | tmp = 0; | |
427 | else if (!strcmp("CH1", devc->triggersource)) | |
428 | tmp = 1; | |
429 | else if (!strcmp("EXT", devc->triggersource)) | |
430 | tmp = 2; | |
431 | else { | |
432 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); | |
433 | return SR_ERR_ARG; | |
434 | } | |
435 | cmdstring[2] = tmp; | |
436 | ||
437 | /* Frame size */ | |
438 | sr_dbg("Frame size: %d.", devc->framesize); | |
439 | cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; | |
440 | ||
441 | /* Timebase fast */ | |
442 | sr_dbg("Time base index: %d.", devc->timebase); | |
443 | if (devc->framesize == FRAMESIZE_SMALL) { | |
444 | if (devc->timebase < TIME_20us) | |
445 | tmp = 0; | |
446 | else if (devc->timebase == TIME_20us) | |
447 | tmp = 1; | |
448 | else if (devc->timebase == TIME_40us) | |
449 | tmp = 2; | |
450 | else if (devc->timebase == TIME_100us) | |
451 | tmp = 3; | |
452 | else if (devc->timebase >= TIME_200us) | |
453 | tmp = 4; | |
454 | } else { | |
455 | if (devc->timebase < TIME_40us) { | |
456 | sr_err("Timebase < 40us only supported with 10K buffer."); | |
457 | return SR_ERR_ARG; | |
458 | } | |
459 | else if (devc->timebase == TIME_40us) | |
460 | tmp = 0; | |
461 | else if (devc->timebase == TIME_100us) | |
462 | tmp = 2; | |
463 | else if (devc->timebase == TIME_200us) | |
464 | tmp = 3; | |
465 | else if (devc->timebase >= TIME_400us) | |
466 | tmp = 4; | |
467 | } | |
468 | cmdstring[2] |= (tmp & 0x07) << 5; | |
469 | ||
470 | /* Enabled channels: 00=CH1 01=CH2 10=both */ | |
471 | sr_dbg("Channels CH1=%d CH2=%d", devc->ch_enabled[0], devc->ch_enabled[1]); | |
472 | tmp = (((devc->ch_enabled[1] ? 1 : 0) << 1) + (devc->ch_enabled[0] ? 1 : 0)) - 1; | |
473 | cmdstring[3] = tmp; | |
474 | ||
475 | /* Fast rates channel */ | |
476 | /* TODO: Is this right? */ | |
477 | tmp = devc->timebase < TIME_10us ? 1 : 0; | |
478 | cmdstring[3] |= tmp << 2; | |
479 | ||
480 | /* Trigger slope: 0=positive 1=negative */ | |
481 | /* TODO: Does this work? */ | |
482 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
483 | cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; | |
484 | ||
485 | /* Timebase slow */ | |
486 | if (devc->timebase < TIME_100us) | |
487 | tmp = 0; | |
488 | else if (devc->timebase > TIME_400ms) | |
489 | tmp = 0xffed; | |
490 | else { | |
491 | if (devc->framesize == FRAMESIZE_SMALL) | |
492 | tmp = timebase_small[devc->timebase - 3]; | |
493 | else | |
494 | tmp = timebase_large[devc->timebase - 3]; | |
495 | } | |
496 | cmdstring[4] = tmp & 0xff; | |
497 | cmdstring[5] = (tmp >> 8) & 0xff; | |
498 | ||
499 | /* Horizontal trigger position */ | |
500 | sr_dbg("Capture ratio: %" PRIu64 ".", devc->capture_ratio); | |
501 | tmp = 0x77fff + 0x8000 * devc->capture_ratio / 100; | |
502 | cmdstring[6] = tmp & 0xff; | |
503 | cmdstring[7] = (tmp >> 8) & 0xff; | |
504 | cmdstring[10] = (tmp >> 16) & 0xff; | |
505 | ||
506 | if (send_begin(sdi) != SR_OK) | |
507 | return SR_ERR; | |
508 | ||
509 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
510 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
511 | sr_err("Failed to set trigger/samplerate: %s.", | |
512 | libusb_error_name(ret)); | |
513 | return SR_ERR; | |
514 | } | |
515 | sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); | |
516 | ||
517 | return SR_OK; | |
518 | } | |
519 | ||
520 | static int dso_set_filters(const struct sr_dev_inst *sdi) | |
521 | { | |
522 | struct dev_context *devc; | |
523 | struct sr_usb_dev_inst *usb; | |
524 | int ret, tmp; | |
525 | uint8_t cmdstring[8]; | |
526 | ||
527 | sr_dbg("Preparing CMD_SET_FILTERS."); | |
528 | ||
529 | devc = sdi->priv; | |
530 | usb = sdi->conn; | |
531 | ||
532 | memset(cmdstring, 0, sizeof(cmdstring)); | |
533 | cmdstring[0] = CMD_SET_FILTERS; | |
534 | cmdstring[1] = 0x0f; | |
535 | if (devc->filter[0]) { | |
536 | sr_dbg("Turning on CH1 filter."); | |
537 | cmdstring[2] |= 0x80; | |
538 | } | |
539 | if (devc->filter[1]) { | |
540 | sr_dbg("Turning on CH2 filter."); | |
541 | cmdstring[2] |= 0x40; | |
542 | } | |
543 | /* | |
544 | * Not supported: filtering on the trigger | |
545 | * cmdstring[2] |= 0x20; | |
546 | */ | |
547 | ||
548 | if (send_begin(sdi) != SR_OK) | |
549 | return SR_ERR; | |
550 | ||
551 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
552 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
553 | sr_err("Failed to set filters: %s.", libusb_error_name(ret)); | |
554 | return SR_ERR; | |
555 | } | |
556 | sr_dbg("Sent CMD_SET_FILTERS."); | |
557 | ||
558 | return SR_OK; | |
559 | } | |
560 | ||
561 | static int dso_set_voltage(const struct sr_dev_inst *sdi) | |
562 | { | |
563 | struct dev_context *devc; | |
564 | struct sr_usb_dev_inst *usb; | |
565 | int ret, tmp; | |
566 | uint8_t cmdstring[8]; | |
567 | ||
568 | sr_dbg("Preparing CMD_SET_VOLTAGE."); | |
569 | ||
570 | devc = sdi->priv; | |
571 | usb = sdi->conn; | |
572 | ||
573 | memset(cmdstring, 0, sizeof(cmdstring)); | |
574 | cmdstring[0] = CMD_SET_VOLTAGE; | |
575 | ||
576 | if (devc->profile->fw_pid == 0x2250) { | |
577 | cmdstring[1] = 0x00; | |
578 | cmdstring[2] = 0x08; | |
579 | } else { | |
580 | cmdstring[1] = 0x0f; | |
581 | cmdstring[2] = 0x30; | |
582 | } | |
583 | ||
584 | /* CH1 volts/div is encoded in bits 0-1. */ | |
585 | sr_dbg("CH1 vdiv index: %d.", devc->voltage[0]); | |
586 | switch (devc->voltage[0]) { | |
587 | case VDIV_1V: | |
588 | case VDIV_100MV: | |
589 | case VDIV_10MV: | |
590 | cmdstring[2] |= 0x00; | |
591 | break; | |
592 | case VDIV_2V: | |
593 | case VDIV_200MV: | |
594 | case VDIV_20MV: | |
595 | cmdstring[2] |= 0x01; | |
596 | break; | |
597 | case VDIV_5V: | |
598 | case VDIV_500MV: | |
599 | case VDIV_50MV: | |
600 | cmdstring[2] |= 0x02; | |
601 | break; | |
602 | } | |
603 | ||
604 | /* CH2 volts/div is encoded in bits 2-3. */ | |
605 | sr_dbg("CH2 vdiv index: %d.", devc->voltage[1]); | |
606 | switch (devc->voltage[1]) { | |
607 | case VDIV_1V: | |
608 | case VDIV_100MV: | |
609 | case VDIV_10MV: | |
610 | cmdstring[2] |= 0x00; | |
611 | break; | |
612 | case VDIV_2V: | |
613 | case VDIV_200MV: | |
614 | case VDIV_20MV: | |
615 | cmdstring[2] |= 0x04; | |
616 | break; | |
617 | case VDIV_5V: | |
618 | case VDIV_500MV: | |
619 | case VDIV_50MV: | |
620 | cmdstring[2] |= 0x08; | |
621 | break; | |
622 | } | |
623 | ||
624 | if (send_begin(sdi) != SR_OK) | |
625 | return SR_ERR; | |
626 | ||
627 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
628 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
629 | sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); | |
630 | return SR_ERR; | |
631 | } | |
632 | sr_dbg("Sent CMD_SET_VOLTAGE."); | |
633 | ||
634 | return SR_OK; | |
635 | } | |
636 | ||
637 | static int dso_set_relays(const struct sr_dev_inst *sdi) | |
638 | { | |
639 | struct dev_context *devc; | |
640 | struct sr_usb_dev_inst *usb; | |
641 | GString *gs; | |
642 | int ret, i; | |
643 | uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
644 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
645 | ||
646 | sr_dbg("Preparing CTRL_SETRELAYS."); | |
647 | ||
648 | devc = sdi->priv; | |
649 | usb = sdi->conn; | |
650 | ||
651 | if (devc->voltage[0] < VDIV_1V) | |
652 | relays[1] = ~relays[1]; | |
653 | ||
654 | if (devc->voltage[0] < VDIV_100MV) | |
655 | relays[2] = ~relays[2]; | |
656 | ||
657 | sr_dbg("CH1 coupling: %d.", devc->coupling[0]); | |
658 | if (devc->coupling[0] != COUPLING_AC) | |
659 | relays[3] = ~relays[3]; | |
660 | ||
661 | if (devc->voltage[1] < VDIV_1V) | |
662 | relays[4] = ~relays[4]; | |
663 | ||
664 | if (devc->voltage[1] < VDIV_100MV) | |
665 | relays[5] = ~relays[5]; | |
666 | ||
667 | sr_dbg("CH2 coupling: %d.", devc->coupling[1]); | |
668 | if (devc->coupling[1] != COUPLING_AC) | |
669 | relays[6] = ~relays[6]; | |
670 | ||
671 | if (!strcmp(devc->triggersource, "EXT")) | |
672 | relays[7] = ~relays[7]; | |
673 | ||
674 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
675 | gs = g_string_sized_new(128); | |
676 | g_string_printf(gs, "Relays:"); | |
677 | for (i = 0; i < 17; i++) | |
678 | g_string_append_printf(gs, " %.2x", relays[i]); | |
679 | sr_dbg("%s", gs->str); | |
680 | g_string_free(gs, TRUE); | |
681 | } | |
682 | ||
683 | if ((ret = libusb_control_transfer(usb->devhdl, | |
684 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, | |
685 | 0, 0, relays, 17, 100)) != sizeof(relays)) { | |
686 | sr_err("Failed to set relays: %s.", libusb_error_name(ret)); | |
687 | return SR_ERR; | |
688 | } | |
689 | sr_dbg("Sent CTRL_SETRELAYS."); | |
690 | ||
691 | return SR_OK; | |
692 | } | |
693 | ||
694 | SR_PRIV int dso_set_voffsets(const struct sr_dev_inst *sdi) | |
695 | { | |
696 | struct dev_context *devc; | |
697 | struct sr_usb_dev_inst *usb; | |
698 | int offset, ret; | |
699 | uint16_t *ch_levels; | |
700 | uint8_t offsets[17]; | |
701 | ||
702 | sr_dbg("Preparing CTRL_SETOFFSET."); | |
703 | ||
704 | devc = sdi->priv; | |
705 | usb = sdi->conn; | |
706 | ||
707 | memset(offsets, 0, sizeof(offsets)); | |
708 | /* Channel 1 */ | |
709 | ch_levels = devc->channel_levels[0][devc->voltage[0]]; | |
710 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; | |
711 | offsets[0] = (offset >> 8) | 0x20; | |
712 | offsets[1] = offset & 0xff; | |
713 | sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, | |
714 | offsets[0], offsets[1]); | |
715 | ||
716 | /* Channel 2 */ | |
717 | ch_levels = devc->channel_levels[1][devc->voltage[1]]; | |
718 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; | |
719 | offsets[2] = (offset >> 8) | 0x20; | |
720 | offsets[3] = offset & 0xff; | |
721 | sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, | |
722 | offsets[2], offsets[3]); | |
723 | ||
724 | /* Trigger */ | |
725 | offset = MAX_VERT_TRIGGER * devc->voffset_trigger; | |
726 | offsets[4] = (offset >> 8) | 0x20; | |
727 | offsets[5] = offset & 0xff; | |
728 | sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, | |
729 | offsets[4], offsets[5]); | |
730 | ||
731 | if ((ret = libusb_control_transfer(usb->devhdl, | |
732 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, | |
733 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
734 | sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); | |
735 | return SR_ERR; | |
736 | } | |
737 | sr_dbg("Sent CTRL_SETOFFSET."); | |
738 | ||
739 | return SR_OK; | |
740 | } | |
741 | ||
742 | SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) | |
743 | { | |
744 | struct sr_usb_dev_inst *usb; | |
745 | int ret, tmp; | |
746 | uint8_t cmdstring[2]; | |
747 | ||
748 | sr_dbg("Sending CMD_ENABLE_TRIGGER."); | |
749 | ||
750 | usb = sdi->conn; | |
751 | ||
752 | memset(cmdstring, 0, sizeof(cmdstring)); | |
753 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
754 | cmdstring[1] = 0x00; | |
755 | ||
756 | if (send_begin(sdi) != SR_OK) | |
757 | return SR_ERR; | |
758 | ||
759 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
760 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
761 | sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); | |
762 | return SR_ERR; | |
763 | } | |
764 | ||
765 | return SR_OK; | |
766 | } | |
767 | ||
768 | SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) | |
769 | { | |
770 | struct sr_usb_dev_inst *usb; | |
771 | int ret, tmp; | |
772 | uint8_t cmdstring[2]; | |
773 | ||
774 | sr_dbg("Sending CMD_FORCE_TRIGGER."); | |
775 | ||
776 | usb = sdi->conn; | |
777 | ||
778 | memset(cmdstring, 0, sizeof(cmdstring)); | |
779 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
780 | cmdstring[1] = 0x00; | |
781 | ||
782 | if (send_begin(sdi) != SR_OK) | |
783 | return SR_ERR; | |
784 | ||
785 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, | |
786 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
787 | sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); | |
788 | return SR_ERR; | |
789 | } | |
790 | ||
791 | return SR_OK; | |
792 | } | |
793 | ||
794 | SR_PRIV int dso_init(const struct sr_dev_inst *sdi) | |
795 | { | |
796 | sr_dbg("Initializing DSO."); | |
797 | ||
798 | if (get_channel_offsets(sdi) != SR_OK) | |
799 | return SR_ERR; | |
800 | ||
801 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
802 | return SR_ERR; | |
803 | ||
804 | if (dso_set_filters(sdi) != SR_OK) | |
805 | return SR_ERR; | |
806 | ||
807 | if (dso_set_voltage(sdi) != SR_OK) | |
808 | return SR_ERR; | |
809 | ||
810 | if (dso_set_relays(sdi) != SR_OK) | |
811 | return SR_ERR; | |
812 | ||
813 | if (dso_set_voffsets(sdi) != SR_OK) | |
814 | return SR_ERR; | |
815 | ||
816 | if (dso_enable_trigger(sdi) != SR_OK) | |
817 | return SR_ERR; | |
818 | ||
819 | return SR_OK; | |
820 | } | |
821 | ||
822 | SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, | |
823 | uint8_t *capturestate, uint32_t *trigger_offset) | |
824 | { | |
825 | struct sr_usb_dev_inst *usb; | |
826 | int ret, tmp, i; | |
827 | unsigned int bitvalue, toff; | |
828 | uint8_t cmdstring[2], inbuf[512]; | |
829 | ||
830 | sr_dbg("Sending CMD_GET_CAPTURESTATE."); | |
831 | ||
832 | usb = sdi->conn; | |
833 | ||
834 | cmdstring[0] = CMD_GET_CAPTURESTATE; | |
835 | cmdstring[1] = 0; | |
836 | ||
837 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
838 | sr_dbg("Failed to send get_capturestate command: %s.", | |
839 | libusb_error_name(ret)); | |
840 | return SR_ERR; | |
841 | } | |
842 | ||
843 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, | |
844 | inbuf, 512, &tmp, 100)) != 0) { | |
845 | sr_dbg("Failed to get capturestate: %s.", | |
846 | libusb_error_name(ret)); | |
847 | return SR_ERR; | |
848 | } | |
849 | *capturestate = inbuf[0]; | |
850 | toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; | |
851 | ||
852 | /* | |
853 | * This conversion comes from the openhantek project. | |
854 | * Each set bit in the 24-bit value inverts all bits with a lower | |
855 | * value. No idea why the device reports the trigger point this way. | |
856 | */ | |
857 | bitvalue = 1; | |
858 | for (i = 0; i < 24; i++) { | |
859 | /* Each set bit inverts all bits with a lower value. */ | |
860 | if (toff & bitvalue) | |
861 | toff ^= bitvalue - 1; | |
862 | bitvalue <<= 1; | |
863 | } | |
864 | *trigger_offset = toff; | |
865 | ||
866 | return SR_OK; | |
867 | } | |
868 | ||
869 | SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) | |
870 | { | |
871 | int ret; | |
872 | uint8_t cmdstring[2]; | |
873 | ||
874 | sr_dbg("Sending CMD_CAPTURE_START."); | |
875 | ||
876 | cmdstring[0] = CMD_CAPTURE_START; | |
877 | cmdstring[1] = 0; | |
878 | ||
879 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
880 | sr_err("Failed to send capture_start command: %s.", | |
881 | libusb_error_name(ret)); | |
882 | return SR_ERR; | |
883 | } | |
884 | ||
885 | return SR_OK; | |
886 | } | |
887 | ||
888 | SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, | |
889 | libusb_transfer_cb_fn cb) | |
890 | { | |
891 | struct dev_context *devc; | |
892 | struct sr_usb_dev_inst *usb; | |
893 | struct libusb_transfer *transfer; | |
894 | int num_transfers, ret, i; | |
895 | uint8_t cmdstring[2]; | |
896 | unsigned char *buf; | |
897 | ||
898 | sr_dbg("Sending CMD_GET_CHANNELDATA."); | |
899 | ||
900 | devc = sdi->priv; | |
901 | usb = sdi->conn; | |
902 | ||
903 | cmdstring[0] = CMD_GET_CHANNELDATA; | |
904 | cmdstring[1] = 0; | |
905 | ||
906 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { | |
907 | sr_err("Failed to get channel data: %s.", | |
908 | libusb_error_name(ret)); | |
909 | return SR_ERR; | |
910 | } | |
911 | ||
912 | /* TODO: DSO-2xxx only. */ | |
913 | num_transfers = devc->framesize * | |
914 | sizeof(unsigned short) / devc->epin_maxpacketsize; | |
915 | sr_dbg("Queueing up %d transfers.", num_transfers); | |
916 | for (i = 0; i < num_transfers; i++) { | |
917 | if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { | |
918 | sr_err("Failed to malloc USB endpoint buffer."); | |
919 | return SR_ERR_MALLOC; | |
920 | } | |
921 | transfer = libusb_alloc_transfer(0); | |
922 | libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, | |
923 | devc->epin_maxpacketsize, cb, (void *)sdi, 40); | |
924 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
925 | sr_err("Failed to submit transfer: %s.", | |
926 | libusb_error_name(ret)); | |
927 | /* TODO: Free them all. */ | |
928 | libusb_free_transfer(transfer); | |
929 | g_free(buf); | |
930 | return SR_ERR; | |
931 | } | |
932 | } | |
933 | ||
934 | return SR_OK; | |
935 | } |