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3b533202 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
3b533202 BV |
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 | ||
6ec6c43b | 22 | #include <config.h> |
3b533202 BV |
23 | #include <string.h> |
24 | #include <glib.h> | |
25 | #include <libusb.h> | |
c1aae900 | 26 | #include <libsigrok/libsigrok.h> |
515ab088 | 27 | #include "libsigrok-internal.h" |
caeb8d7a | 28 | #include "protocol.h" |
3b533202 | 29 | |
c118080b | 30 | static int send_begin(const struct sr_dev_inst *sdi) |
3b533202 | 31 | { |
c118080b | 32 | struct sr_usb_dev_inst *usb; |
3b533202 BV |
33 | int ret; |
34 | unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x68, 0xac, 0xfe, | |
35 | 0x00, 0x01, 0x00}; | |
36 | ||
e98b7f1b | 37 | sr_dbg("Sending CTRL_BEGINCOMMAND."); |
3b533202 | 38 | |
c118080b BV |
39 | usb = sdi->conn; |
40 | if ((ret = libusb_control_transfer(usb->devhdl, | |
3b533202 BV |
41 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_BEGINCOMMAND, |
42 | 0, 0, buffer, sizeof(buffer), 200)) != sizeof(buffer)) { | |
d4928d71 PS |
43 | sr_err("Failed to send begincommand: %s.", |
44 | libusb_error_name(ret)); | |
3b533202 BV |
45 | return SR_ERR; |
46 | } | |
47 | ||
48 | return SR_OK; | |
49 | } | |
50 | ||
c118080b | 51 | static int send_bulkcmd(const struct sr_dev_inst *sdi, uint8_t *cmdstring, int cmdlen) |
3b533202 | 52 | { |
c118080b | 53 | struct sr_usb_dev_inst *usb; |
3b533202 BV |
54 | int ret, tmp; |
55 | ||
c118080b BV |
56 | usb = sdi->conn; |
57 | ||
58 | if (send_begin(sdi) != SR_OK) | |
3b533202 BV |
59 | return SR_ERR; |
60 | ||
c118080b BV |
61 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, cmdstring, |
62 | cmdlen, &tmp, 200)) != 0) | |
3b533202 BV |
63 | return SR_ERR; |
64 | ||
65 | return SR_OK; | |
66 | } | |
67 | ||
d87c1766 | 68 | static int dso_getmps(libusb_device *dev) |
3b533202 BV |
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 | ||
2a8f2d41 | 75 | libusb_get_device_descriptor(dev, &des); |
3b533202 BV |
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 | ||
25a0f108 | 107 | SR_PRIV int dso_open(struct sr_dev_inst *sdi) |
3b533202 | 108 | { |
269971dd | 109 | struct dev_context *devc; |
e32862eb | 110 | struct drv_context *drvc = sdi->driver->context; |
c118080b BV |
111 | struct sr_usb_dev_inst *usb; |
112 | struct libusb_device_descriptor des; | |
113 | libusb_device **devlist; | |
395206f4 SA |
114 | int err, i; |
115 | char connection_id[64]; | |
3b533202 | 116 | |
269971dd | 117 | devc = sdi->priv; |
c118080b | 118 | usb = sdi->conn; |
3b533202 | 119 | |
d4abb463 | 120 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); |
3b533202 | 121 | for (i = 0; devlist[i]; i++) { |
2a8f2d41 | 122 | libusb_get_device_descriptor(devlist[i], &des); |
3b533202 | 123 | |
269971dd BV |
124 | if (des.idVendor != devc->profile->fw_vid |
125 | || des.idProduct != devc->profile->fw_pid) | |
3b533202 BV |
126 | continue; |
127 | ||
395206f4 SA |
128 | if ((sdi->status == SR_ST_INITIALIZING) || |
129 | (sdi->status == SR_ST_INACTIVE)) { | |
3b533202 | 130 | /* |
395206f4 | 131 | * Check device by its physical USB bus/port address. |
3b533202 | 132 | */ |
6c1a76d1 RT |
133 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) |
134 | continue; | |
135 | ||
395206f4 SA |
136 | if (strcmp(sdi->connection_id, connection_id)) |
137 | /* This is not the one. */ | |
3b533202 BV |
138 | continue; |
139 | } | |
140 | ||
c118080b BV |
141 | if (!(err = libusb_open(devlist[i], &usb->devhdl))) { |
142 | if (usb->address == 0xff) | |
3b533202 BV |
143 | /* |
144 | * first time we touch this device after firmware upload, | |
145 | * so we don't know the address yet. | |
146 | */ | |
c118080b | 147 | usb->address = libusb_get_device_address(devlist[i]); |
3b533202 | 148 | |
e98b7f1b UH |
149 | if (!(devc->epin_maxpacketsize = dso_getmps(devlist[i]))) |
150 | sr_err("Wrong endpoint profile."); | |
3b533202 BV |
151 | else { |
152 | sdi->status = SR_ST_ACTIVE; | |
395206f4 SA |
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); | |
3b533202 BV |
157 | } |
158 | } else { | |
d4928d71 PS |
159 | sr_err("Failed to open device: %s.", |
160 | libusb_error_name(err)); | |
3b533202 BV |
161 | } |
162 | ||
e98b7f1b | 163 | /* If we made it here, we handled the device (somehow). */ |
3b533202 BV |
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 | { | |
c118080b | 176 | struct sr_usb_dev_inst *usb; |
3b533202 | 177 | |
c118080b | 178 | usb = sdi->conn; |
3b533202 | 179 | |
98fec29e | 180 | if (!usb->devhdl) |
3b533202 BV |
181 | return; |
182 | ||
395206f4 SA |
183 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", |
184 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
c118080b BV |
185 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
186 | libusb_close(usb->devhdl); | |
187 | usb->devhdl = NULL; | |
3b533202 | 188 | sdi->status = SR_ST_INACTIVE; |
3b533202 BV |
189 | } |
190 | ||
c118080b | 191 | static int get_channel_offsets(const struct sr_dev_inst *sdi) |
3b533202 | 192 | { |
c118080b BV |
193 | struct dev_context *devc; |
194 | struct sr_usb_dev_inst *usb; | |
2715c0b8 BV |
195 | GString *gs; |
196 | int chan, v, ret; | |
3b533202 | 197 | |
e98b7f1b | 198 | sr_dbg("Getting channel offsets."); |
3b533202 | 199 | |
c118080b BV |
200 | devc = sdi->priv; |
201 | usb = sdi->conn; | |
202 | ||
203 | ret = libusb_control_transfer(usb->devhdl, | |
3b533202 BV |
204 | LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR, |
205 | CTRL_READ_EEPROM, EEPROM_CHANNEL_OFFSETS, 0, | |
269971dd BV |
206 | (unsigned char *)&devc->channel_levels, |
207 | sizeof(devc->channel_levels), 200); | |
208 | if (ret != sizeof(devc->channel_levels)) { | |
d4928d71 PS |
209 | sr_err("Failed to get channel offsets: %s.", |
210 | libusb_error_name(ret)); | |
3b533202 BV |
211 | return SR_ERR; |
212 | } | |
213 | ||
2715c0b8 BV |
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 | */ | |
07ffa5b3 | 219 | for (chan = 0; chan < NUM_CHANNELS; chan++) { |
2715c0b8 | 220 | for (v = 0; v < 9; v++) { |
e98b7f1b UH |
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]); | |
2715c0b8 BV |
225 | } |
226 | } | |
227 | ||
228 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { | |
229 | gs = g_string_sized_new(128); | |
07ffa5b3 | 230 | for (chan = 0; chan < NUM_CHANNELS; chan++) { |
e98b7f1b | 231 | g_string_printf(gs, "CH%d:", chan + 1); |
2715c0b8 BV |
232 | for (v = 0; v < 9; v++) { |
233 | g_string_append_printf(gs, " %.4x-%.4x", | |
e98b7f1b UH |
234 | devc->channel_levels[chan][v][0], |
235 | devc->channel_levels[chan][v][1]); | |
2715c0b8 | 236 | } |
cbc6f3b2 | 237 | sr_dbg("%s", gs->str); |
2715c0b8 BV |
238 | } |
239 | g_string_free(gs, TRUE); | |
240 | } | |
241 | ||
3b533202 BV |
242 | return SR_OK; |
243 | } | |
244 | ||
95983cc3 PM |
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 | ||
87f56d01 PM |
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; | |
6deb361b | 268 | uint64_t base; |
87f56d01 | 269 | uint8_t cmdstring[12]; |
95983cc3 | 270 | int trig; |
87f56d01 | 271 | |
87f56d01 PM |
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 | ||
87f56d01 PM |
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 | ||
87f56d01 PM |
304 | /* Frame size */ |
305 | sr_dbg("Frame size: %d.", devc->framesize); | |
306 | cmdstring[0] = CMD_2250_SET_RECORD_LENGTH; | |
ab8df2b1 | 307 | cmdstring[2] = (devc->framesize == FRAMESIZE_SMALL) ? 0x01 : 0x02; |
87f56d01 PM |
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 | ||
87f56d01 PM |
319 | memset(cmdstring, 0, sizeof(cmdstring)); |
320 | cmdstring[0] = CMD_2250_SET_SAMPLERATE; | |
87f56d01 | 321 | base = 100e6; |
11e33196 PM |
322 | if (devc->samplerate > base) { |
323 | /* Timebase fast */ | |
324 | sr_err("Sample rate > 100MHz not yet supported."); | |
325 | return SR_ERR_ARG; | |
87f56d01 PM |
326 | } |
327 | ||
11e33196 | 328 | tmp = base / devc->samplerate; |
fe185e49 AS |
329 | /* Downsample only if really necessary */ |
330 | if (tmp > 1) { | |
11e33196 PM |
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; | |
ab8df2b1 | 342 | sr_dbg("Down sampler value: 0x%x.", tmp & 0xffff); |
11e33196 PM |
343 | cmdstring[4] = (tmp >> 0) & 0xff; |
344 | cmdstring[5] = (tmp >> 8) & 0xff; | |
345 | } | |
87f56d01 PM |
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 | ||
ab8df2b1 | 358 | /* Enabled channels: 00=CH1, 01=CH2, 10=both. */ |
87f56d01 PM |
359 | memset(cmdstring, 0, sizeof(cmdstring)); |
360 | cmdstring[0] = CMD_2250_SET_CHANNELS; | |
ab8df2b1 | 361 | sr_dbg("Channels: CH1=%d, CH2=%d.", devc->ch_enabled[0], devc->ch_enabled[1]); |
87f56d01 PM |
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 | ||
ab8df2b1 | 375 | /* Trigger slope: 0=positive, 1=negative. */ |
87f56d01 PM |
376 | memset(cmdstring, 0, sizeof(cmdstring)); |
377 | cmdstring[0] = CMD_2250_SET_TRIGGERPOS_AND_BUFFER; | |
378 | ||
d3f14af7 | 379 | sr_dbg("Capture ratio: %" PRIu64 ".", devc->capture_ratio); |
95983cc3 PM |
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); | |
87f56d01 PM |
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 | ||
be702d16 | 400 | SR_PRIV int dso_set_trigger_samplerate(const struct sr_dev_inst *sdi) |
3b533202 | 401 | { |
c118080b BV |
402 | struct dev_context *devc; |
403 | struct sr_usb_dev_inst *usb; | |
3b533202 BV |
404 | int ret, tmp; |
405 | uint8_t cmdstring[12]; | |
3b533202 | 406 | uint16_t timebase_small[] = { 0xffff, 0xfffc, 0xfff7, 0xffe8, 0xffce, |
e98b7f1b | 407 | 0xff9c, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79, 0xd8f1 }; |
3b533202 | 408 | uint16_t timebase_large[] = { 0xffff, 0x0000, 0xfffc, 0xfff7, 0xffe8, |
e98b7f1b | 409 | 0xffce, 0xff9d, 0xff07, 0xfe0d, 0xfc19, 0xf63d, 0xec79 }; |
3b533202 | 410 | |
87f56d01 PM |
411 | devc = sdi->priv; |
412 | if (devc->profile->fw_pid == 0x2250) | |
413 | return dso2250_set_trigger_samplerate(sdi); | |
414 | ||
e98b7f1b | 415 | sr_dbg("Preparing CMD_SET_TRIGGER_SAMPLERATE."); |
3b533202 | 416 | |
c118080b BV |
417 | usb = sdi->conn; |
418 | ||
3b533202 BV |
419 | memset(cmdstring, 0, sizeof(cmdstring)); |
420 | /* Command */ | |
421 | cmdstring[0] = CMD_SET_TRIGGER_SAMPLERATE; | |
422 | ||
423 | /* Trigger source */ | |
e98b7f1b | 424 | sr_dbg("Trigger source %s.", devc->triggersource); |
269971dd | 425 | if (!strcmp("CH2", devc->triggersource)) |
a370ef19 | 426 | tmp = 0; |
269971dd | 427 | else if (!strcmp("CH1", devc->triggersource)) |
a370ef19 | 428 | tmp = 1; |
269971dd | 429 | else if (!strcmp("EXT", devc->triggersource)) |
a370ef19 BV |
430 | tmp = 2; |
431 | else { | |
e98b7f1b | 432 | sr_err("Invalid trigger source: '%s'.", devc->triggersource); |
a370ef19 BV |
433 | return SR_ERR_ARG; |
434 | } | |
435 | cmdstring[2] = tmp; | |
3b533202 BV |
436 | |
437 | /* Frame size */ | |
e98b7f1b | 438 | sr_dbg("Frame size: %d.", devc->framesize); |
269971dd | 439 | cmdstring[2] |= (devc->framesize == FRAMESIZE_SMALL ? 0x01 : 0x02) << 2; |
bc79e906 BV |
440 | |
441 | /* Timebase fast */ | |
e98b7f1b | 442 | sr_dbg("Time base index: %d.", devc->timebase); |
034accb5 | 443 | if (devc->framesize == FRAMESIZE_SMALL) { |
269971dd | 444 | if (devc->timebase < TIME_20us) |
bc79e906 | 445 | tmp = 0; |
269971dd | 446 | else if (devc->timebase == TIME_20us) |
bc79e906 | 447 | tmp = 1; |
269971dd | 448 | else if (devc->timebase == TIME_40us) |
bc79e906 | 449 | tmp = 2; |
269971dd | 450 | else if (devc->timebase == TIME_100us) |
bc79e906 | 451 | tmp = 3; |
269971dd | 452 | else if (devc->timebase >= TIME_200us) |
bc79e906 | 453 | tmp = 4; |
034accb5 | 454 | } else { |
269971dd | 455 | if (devc->timebase < TIME_40us) { |
e98b7f1b | 456 | sr_err("Timebase < 40us only supported with 10K buffer."); |
bc79e906 BV |
457 | return SR_ERR_ARG; |
458 | } | |
269971dd | 459 | else if (devc->timebase == TIME_40us) |
bc79e906 | 460 | tmp = 0; |
269971dd | 461 | else if (devc->timebase == TIME_100us) |
bc79e906 | 462 | tmp = 2; |
269971dd | 463 | else if (devc->timebase == TIME_200us) |
bc79e906 | 464 | tmp = 3; |
269971dd | 465 | else if (devc->timebase >= TIME_400us) |
bc79e906 | 466 | tmp = 4; |
3b533202 | 467 | } |
bc79e906 BV |
468 | cmdstring[2] |= (tmp & 0x07) << 5; |
469 | ||
470 | /* Enabled channels: 00=CH1 01=CH2 10=both */ | |
417412c8 AJ |
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; | |
6e71ef3b | 473 | cmdstring[3] = tmp; |
3b533202 | 474 | |
bc79e906 | 475 | /* Fast rates channel */ |
e98b7f1b | 476 | /* TODO: Is this right? */ |
269971dd | 477 | tmp = devc->timebase < TIME_10us ? 1 : 0; |
bc79e906 | 478 | cmdstring[3] |= tmp << 2; |
3b533202 | 479 | |
bc79e906 | 480 | /* Trigger slope: 0=positive 1=negative */ |
e98b7f1b UH |
481 | /* TODO: Does this work? */ |
482 | sr_dbg("Trigger slope: %d.", devc->triggerslope); | |
269971dd | 483 | cmdstring[3] |= (devc->triggerslope == SLOPE_NEGATIVE ? 1 : 0) << 3; |
3b533202 | 484 | |
a370ef19 | 485 | /* Timebase slow */ |
269971dd | 486 | if (devc->timebase < TIME_100us) |
3b533202 | 487 | tmp = 0; |
269971dd | 488 | else if (devc->timebase > TIME_400ms) |
3b533202 BV |
489 | tmp = 0xffed; |
490 | else { | |
269971dd BV |
491 | if (devc->framesize == FRAMESIZE_SMALL) |
492 | tmp = timebase_small[devc->timebase - 3]; | |
3b533202 | 493 | else |
269971dd | 494 | tmp = timebase_large[devc->timebase - 3]; |
3b533202 | 495 | } |
bc79e906 BV |
496 | cmdstring[4] = tmp & 0xff; |
497 | cmdstring[5] = (tmp >> 8) & 0xff; | |
498 | ||
499 | /* Horizontal trigger position */ | |
d3f14af7 | 500 | sr_dbg("Capture ratio: %" PRIu64 ".", devc->capture_ratio); |
95983cc3 | 501 | tmp = 0x77fff + 0x8000 * devc->capture_ratio / 100; |
3b533202 BV |
502 | cmdstring[6] = tmp & 0xff; |
503 | cmdstring[7] = (tmp >> 8) & 0xff; | |
3b533202 BV |
504 | cmdstring[10] = (tmp >> 16) & 0xff; |
505 | ||
c118080b | 506 | if (send_begin(sdi) != SR_OK) |
3b533202 BV |
507 | return SR_ERR; |
508 | ||
c118080b BV |
509 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, |
510 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
d4928d71 PS |
511 | sr_err("Failed to set trigger/samplerate: %s.", |
512 | libusb_error_name(ret)); | |
3b533202 BV |
513 | return SR_ERR; |
514 | } | |
e98b7f1b | 515 | sr_dbg("Sent CMD_SET_TRIGGER_SAMPLERATE."); |
3b533202 BV |
516 | |
517 | return SR_OK; | |
518 | } | |
519 | ||
d87c1766 | 520 | static int dso_set_filters(const struct sr_dev_inst *sdi) |
3b533202 | 521 | { |
c118080b BV |
522 | struct dev_context *devc; |
523 | struct sr_usb_dev_inst *usb; | |
3b533202 BV |
524 | int ret, tmp; |
525 | uint8_t cmdstring[8]; | |
526 | ||
e98b7f1b | 527 | sr_dbg("Preparing CMD_SET_FILTERS."); |
3b533202 | 528 | |
c118080b BV |
529 | devc = sdi->priv; |
530 | usb = sdi->conn; | |
531 | ||
3b533202 BV |
532 | memset(cmdstring, 0, sizeof(cmdstring)); |
533 | cmdstring[0] = CMD_SET_FILTERS; | |
534 | cmdstring[1] = 0x0f; | |
933defaa | 535 | if (devc->filter[0]) { |
e98b7f1b | 536 | sr_dbg("Turning on CH1 filter."); |
3b533202 | 537 | cmdstring[2] |= 0x80; |
ebb781a6 | 538 | } |
933defaa | 539 | if (devc->filter[1]) { |
e98b7f1b | 540 | sr_dbg("Turning on CH2 filter."); |
3b533202 | 541 | cmdstring[2] |= 0x40; |
ebb781a6 | 542 | } |
933defaa BV |
543 | /* |
544 | * Not supported: filtering on the trigger | |
545 | * cmdstring[2] |= 0x20; | |
546 | */ | |
3b533202 | 547 | |
c118080b | 548 | if (send_begin(sdi) != SR_OK) |
3b533202 BV |
549 | return SR_ERR; |
550 | ||
c118080b BV |
551 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, |
552 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
1740429d | 553 | sr_err("Failed to set filters: %s.", libusb_error_name(ret)); |
3b533202 BV |
554 | return SR_ERR; |
555 | } | |
e98b7f1b | 556 | sr_dbg("Sent CMD_SET_FILTERS."); |
3b533202 BV |
557 | |
558 | return SR_OK; | |
559 | } | |
560 | ||
d87c1766 | 561 | static int dso_set_voltage(const struct sr_dev_inst *sdi) |
3b533202 | 562 | { |
c118080b BV |
563 | struct dev_context *devc; |
564 | struct sr_usb_dev_inst *usb; | |
3b533202 BV |
565 | int ret, tmp; |
566 | uint8_t cmdstring[8]; | |
567 | ||
e98b7f1b | 568 | sr_dbg("Preparing CMD_SET_VOLTAGE."); |
3b533202 | 569 | |
c118080b BV |
570 | devc = sdi->priv; |
571 | usb = sdi->conn; | |
572 | ||
3b533202 BV |
573 | memset(cmdstring, 0, sizeof(cmdstring)); |
574 | cmdstring[0] = CMD_SET_VOLTAGE; | |
87f56d01 PM |
575 | |
576 | if (devc->profile->fw_pid == 0x2250) { | |
ab8df2b1 | 577 | cmdstring[1] = 0x00; |
87f56d01 PM |
578 | cmdstring[2] = 0x08; |
579 | } else { | |
580 | cmdstring[1] = 0x0f; | |
581 | cmdstring[2] = 0x30; | |
582 | } | |
313deed2 | 583 | |
ab8df2b1 | 584 | /* CH1 volts/div is encoded in bits 0-1. */ |
933defaa BV |
585 | sr_dbg("CH1 vdiv index: %d.", devc->voltage[0]); |
586 | switch (devc->voltage[0]) { | |
313deed2 BV |
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 | ||
ab8df2b1 | 604 | /* CH2 volts/div is encoded in bits 2-3. */ |
933defaa BV |
605 | sr_dbg("CH2 vdiv index: %d.", devc->voltage[1]); |
606 | switch (devc->voltage[1]) { | |
313deed2 BV |
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: | |
1d97091e | 615 | cmdstring[2] |= 0x04; |
313deed2 BV |
616 | break; |
617 | case VDIV_5V: | |
618 | case VDIV_500MV: | |
619 | case VDIV_50MV: | |
1d97091e | 620 | cmdstring[2] |= 0x08; |
313deed2 BV |
621 | break; |
622 | } | |
3b533202 | 623 | |
c118080b | 624 | if (send_begin(sdi) != SR_OK) |
3b533202 BV |
625 | return SR_ERR; |
626 | ||
c118080b BV |
627 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, |
628 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
1740429d | 629 | sr_err("Failed to set voltage: %s.", libusb_error_name(ret)); |
3b533202 BV |
630 | return SR_ERR; |
631 | } | |
e98b7f1b | 632 | sr_dbg("Sent CMD_SET_VOLTAGE."); |
3b533202 BV |
633 | |
634 | return SR_OK; | |
635 | } | |
636 | ||
d87c1766 | 637 | static int dso_set_relays(const struct sr_dev_inst *sdi) |
3b533202 | 638 | { |
c118080b BV |
639 | struct dev_context *devc; |
640 | struct sr_usb_dev_inst *usb; | |
a217bcdf BV |
641 | GString *gs; |
642 | int ret, i; | |
643 | uint8_t relays[17] = { 0x00, 0x04, 0x08, 0x02, 0x20, 0x40, 0x10, 0x01, | |
3b533202 BV |
644 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
645 | ||
e98b7f1b | 646 | sr_dbg("Preparing CTRL_SETRELAYS."); |
3b533202 | 647 | |
c118080b BV |
648 | devc = sdi->priv; |
649 | usb = sdi->conn; | |
650 | ||
933defaa | 651 | if (devc->voltage[0] < VDIV_1V) |
3b533202 BV |
652 | relays[1] = ~relays[1]; |
653 | ||
933defaa | 654 | if (devc->voltage[0] < VDIV_100MV) |
3b533202 BV |
655 | relays[2] = ~relays[2]; |
656 | ||
933defaa BV |
657 | sr_dbg("CH1 coupling: %d.", devc->coupling[0]); |
658 | if (devc->coupling[0] != COUPLING_AC) | |
3b533202 BV |
659 | relays[3] = ~relays[3]; |
660 | ||
933defaa | 661 | if (devc->voltage[1] < VDIV_1V) |
3b533202 BV |
662 | relays[4] = ~relays[4]; |
663 | ||
933defaa | 664 | if (devc->voltage[1] < VDIV_100MV) |
3b533202 BV |
665 | relays[5] = ~relays[5]; |
666 | ||
933defaa BV |
667 | sr_dbg("CH2 coupling: %d.", devc->coupling[1]); |
668 | if (devc->coupling[1] != COUPLING_AC) | |
3b533202 BV |
669 | relays[6] = ~relays[6]; |
670 | ||
269971dd | 671 | if (!strcmp(devc->triggersource, "EXT")) |
3b533202 BV |
672 | relays[7] = ~relays[7]; |
673 | ||
a217bcdf BV |
674 | if (sr_log_loglevel_get() >= SR_LOG_DBG) { |
675 | gs = g_string_sized_new(128); | |
e98b7f1b | 676 | g_string_printf(gs, "Relays:"); |
a217bcdf BV |
677 | for (i = 0; i < 17; i++) |
678 | g_string_append_printf(gs, " %.2x", relays[i]); | |
cbc6f3b2 | 679 | sr_dbg("%s", gs->str); |
a217bcdf BV |
680 | g_string_free(gs, TRUE); |
681 | } | |
682 | ||
c118080b | 683 | if ((ret = libusb_control_transfer(usb->devhdl, |
3b533202 | 684 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETRELAYS, |
a217bcdf | 685 | 0, 0, relays, 17, 100)) != sizeof(relays)) { |
1740429d | 686 | sr_err("Failed to set relays: %s.", libusb_error_name(ret)); |
3b533202 BV |
687 | return SR_ERR; |
688 | } | |
e98b7f1b | 689 | sr_dbg("Sent CTRL_SETRELAYS."); |
3b533202 BV |
690 | |
691 | return SR_OK; | |
692 | } | |
693 | ||
be702d16 | 694 | SR_PRIV int dso_set_voffsets(const struct sr_dev_inst *sdi) |
3b533202 | 695 | { |
c118080b BV |
696 | struct dev_context *devc; |
697 | struct sr_usb_dev_inst *usb; | |
3b533202 BV |
698 | int offset, ret; |
699 | uint16_t *ch_levels; | |
2715c0b8 BV |
700 | uint8_t offsets[17]; |
701 | ||
e98b7f1b | 702 | sr_dbg("Preparing CTRL_SETOFFSET."); |
2715c0b8 | 703 | |
c118080b BV |
704 | devc = sdi->priv; |
705 | usb = sdi->conn; | |
706 | ||
2715c0b8 BV |
707 | memset(offsets, 0, sizeof(offsets)); |
708 | /* Channel 1 */ | |
933defaa | 709 | ch_levels = devc->channel_levels[0][devc->voltage[0]]; |
269971dd | 710 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch1 + ch_levels[0]; |
2715c0b8 BV |
711 | offsets[0] = (offset >> 8) | 0x20; |
712 | offsets[1] = offset & 0xff; | |
e98b7f1b UH |
713 | sr_dbg("CH1 offset: %3.2f (%.2x%.2x).", devc->voffset_ch1, |
714 | offsets[0], offsets[1]); | |
2715c0b8 BV |
715 | |
716 | /* Channel 2 */ | |
933defaa | 717 | ch_levels = devc->channel_levels[1][devc->voltage[1]]; |
269971dd | 718 | offset = (ch_levels[1] - ch_levels[0]) * devc->voffset_ch2 + ch_levels[0]; |
2715c0b8 BV |
719 | offsets[2] = (offset >> 8) | 0x20; |
720 | offsets[3] = offset & 0xff; | |
e98b7f1b UH |
721 | sr_dbg("CH2 offset: %3.2f (%.2x%.2x).", devc->voffset_ch2, |
722 | offsets[2], offsets[3]); | |
2715c0b8 BV |
723 | |
724 | /* Trigger */ | |
269971dd | 725 | offset = MAX_VERT_TRIGGER * devc->voffset_trigger; |
2715c0b8 BV |
726 | offsets[4] = (offset >> 8) | 0x20; |
727 | offsets[5] = offset & 0xff; | |
e98b7f1b | 728 | sr_dbg("Trigger offset: %3.2f (%.2x%.2x).", devc->voffset_trigger, |
2715c0b8 | 729 | offsets[4], offsets[5]); |
3b533202 | 730 | |
c118080b | 731 | if ((ret = libusb_control_transfer(usb->devhdl, |
3b533202 BV |
732 | LIBUSB_REQUEST_TYPE_VENDOR, CTRL_SETOFFSET, |
733 | 0, 0, offsets, sizeof(offsets), 100)) != sizeof(offsets)) { | |
1740429d | 734 | sr_err("Failed to set offsets: %s.", libusb_error_name(ret)); |
3b533202 BV |
735 | return SR_ERR; |
736 | } | |
e98b7f1b | 737 | sr_dbg("Sent CTRL_SETOFFSET."); |
3b533202 BV |
738 | |
739 | return SR_OK; | |
740 | } | |
741 | ||
c118080b | 742 | SR_PRIV int dso_enable_trigger(const struct sr_dev_inst *sdi) |
3b533202 | 743 | { |
c118080b | 744 | struct sr_usb_dev_inst *usb; |
3b533202 BV |
745 | int ret, tmp; |
746 | uint8_t cmdstring[2]; | |
747 | ||
e98b7f1b | 748 | sr_dbg("Sending CMD_ENABLE_TRIGGER."); |
3b533202 | 749 | |
c118080b BV |
750 | usb = sdi->conn; |
751 | ||
3b533202 BV |
752 | memset(cmdstring, 0, sizeof(cmdstring)); |
753 | cmdstring[0] = CMD_ENABLE_TRIGGER; | |
754 | cmdstring[1] = 0x00; | |
755 | ||
c118080b | 756 | if (send_begin(sdi) != SR_OK) |
3b533202 BV |
757 | return SR_ERR; |
758 | ||
c118080b BV |
759 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, |
760 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
1740429d | 761 | sr_err("Failed to enable trigger: %s.", libusb_error_name(ret)); |
3b533202 BV |
762 | return SR_ERR; |
763 | } | |
764 | ||
765 | return SR_OK; | |
766 | } | |
767 | ||
c118080b | 768 | SR_PRIV int dso_force_trigger(const struct sr_dev_inst *sdi) |
3b533202 | 769 | { |
c118080b | 770 | struct sr_usb_dev_inst *usb; |
3b533202 BV |
771 | int ret, tmp; |
772 | uint8_t cmdstring[2]; | |
773 | ||
e98b7f1b | 774 | sr_dbg("Sending CMD_FORCE_TRIGGER."); |
3b533202 | 775 | |
c118080b BV |
776 | usb = sdi->conn; |
777 | ||
3b533202 BV |
778 | memset(cmdstring, 0, sizeof(cmdstring)); |
779 | cmdstring[0] = CMD_FORCE_TRIGGER; | |
780 | cmdstring[1] = 0x00; | |
781 | ||
c118080b | 782 | if (send_begin(sdi) != SR_OK) |
3b533202 BV |
783 | return SR_ERR; |
784 | ||
c118080b BV |
785 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_OUT, |
786 | cmdstring, sizeof(cmdstring), &tmp, 100)) != 0) { | |
1740429d | 787 | sr_err("Failed to force trigger: %s.", libusb_error_name(ret)); |
3b533202 BV |
788 | return SR_ERR; |
789 | } | |
790 | ||
791 | return SR_OK; | |
792 | } | |
793 | ||
c118080b | 794 | SR_PRIV int dso_init(const struct sr_dev_inst *sdi) |
3b533202 | 795 | { |
e98b7f1b | 796 | sr_dbg("Initializing DSO."); |
3b533202 | 797 | |
c118080b | 798 | if (get_channel_offsets(sdi) != SR_OK) |
3b533202 BV |
799 | return SR_ERR; |
800 | ||
c118080b | 801 | if (dso_set_trigger_samplerate(sdi) != SR_OK) |
3b533202 BV |
802 | return SR_ERR; |
803 | ||
c118080b | 804 | if (dso_set_filters(sdi) != SR_OK) |
3b533202 BV |
805 | return SR_ERR; |
806 | ||
c118080b | 807 | if (dso_set_voltage(sdi) != SR_OK) |
3b533202 BV |
808 | return SR_ERR; |
809 | ||
c118080b | 810 | if (dso_set_relays(sdi) != SR_OK) |
3b533202 BV |
811 | return SR_ERR; |
812 | ||
c118080b | 813 | if (dso_set_voffsets(sdi) != SR_OK) |
3b533202 BV |
814 | return SR_ERR; |
815 | ||
c118080b | 816 | if (dso_enable_trigger(sdi) != SR_OK) |
3b533202 BV |
817 | return SR_ERR; |
818 | ||
3b533202 BV |
819 | return SR_OK; |
820 | } | |
821 | ||
c118080b BV |
822 | SR_PRIV int dso_get_capturestate(const struct sr_dev_inst *sdi, |
823 | uint8_t *capturestate, uint32_t *trigger_offset) | |
3b533202 | 824 | { |
c118080b | 825 | struct sr_usb_dev_inst *usb; |
e05a174b BV |
826 | int ret, tmp, i; |
827 | unsigned int bitvalue, toff; | |
3b533202 BV |
828 | uint8_t cmdstring[2], inbuf[512]; |
829 | ||
e98b7f1b | 830 | sr_dbg("Sending CMD_GET_CAPTURESTATE."); |
3b533202 | 831 | |
c118080b BV |
832 | usb = sdi->conn; |
833 | ||
3b533202 BV |
834 | cmdstring[0] = CMD_GET_CAPTURESTATE; |
835 | cmdstring[1] = 0; | |
836 | ||
c118080b | 837 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { |
d4928d71 PS |
838 | sr_dbg("Failed to send get_capturestate command: %s.", |
839 | libusb_error_name(ret)); | |
6e6eeff4 | 840 | return SR_ERR; |
3b533202 BV |
841 | } |
842 | ||
c118080b | 843 | if ((ret = libusb_bulk_transfer(usb->devhdl, DSO_EP_IN, |
3b533202 | 844 | inbuf, 512, &tmp, 100)) != 0) { |
d4928d71 PS |
845 | sr_dbg("Failed to get capturestate: %s.", |
846 | libusb_error_name(ret)); | |
6e6eeff4 | 847 | return SR_ERR; |
3b533202 | 848 | } |
6e6eeff4 | 849 | *capturestate = inbuf[0]; |
e05a174b BV |
850 | toff = (inbuf[1] << 16) | (inbuf[3] << 8) | inbuf[2]; |
851 | ||
e98b7f1b UH |
852 | /* |
853 | * This conversion comes from the openhantek project. | |
e05a174b BV |
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++) { | |
e749a8cb | 859 | /* Each set bit inverts all bits with a lower value. */ |
0c5f2abc | 860 | if (toff & bitvalue) |
e05a174b BV |
861 | toff ^= bitvalue - 1; |
862 | bitvalue <<= 1; | |
863 | } | |
864 | *trigger_offset = toff; | |
3b533202 | 865 | |
6e6eeff4 | 866 | return SR_OK; |
3b533202 BV |
867 | } |
868 | ||
c118080b | 869 | SR_PRIV int dso_capture_start(const struct sr_dev_inst *sdi) |
3b533202 BV |
870 | { |
871 | int ret; | |
872 | uint8_t cmdstring[2]; | |
873 | ||
e98b7f1b | 874 | sr_dbg("Sending CMD_CAPTURE_START."); |
3b533202 BV |
875 | |
876 | cmdstring[0] = CMD_CAPTURE_START; | |
877 | cmdstring[1] = 0; | |
878 | ||
c118080b | 879 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { |
d4928d71 PS |
880 | sr_err("Failed to send capture_start command: %s.", |
881 | libusb_error_name(ret)); | |
3b533202 BV |
882 | return SR_ERR; |
883 | } | |
884 | ||
885 | return SR_OK; | |
886 | } | |
887 | ||
69e19dd7 BV |
888 | SR_PRIV int dso_get_channeldata(const struct sr_dev_inst *sdi, |
889 | libusb_transfer_cb_fn cb) | |
3b533202 | 890 | { |
69e19dd7 | 891 | struct dev_context *devc; |
c118080b | 892 | struct sr_usb_dev_inst *usb; |
3b533202 BV |
893 | struct libusb_transfer *transfer; |
894 | int num_transfers, ret, i; | |
895 | uint8_t cmdstring[2]; | |
896 | unsigned char *buf; | |
897 | ||
e98b7f1b | 898 | sr_dbg("Sending CMD_GET_CHANNELDATA."); |
3b533202 | 899 | |
c118080b BV |
900 | devc = sdi->priv; |
901 | usb = sdi->conn; | |
902 | ||
3b533202 BV |
903 | cmdstring[0] = CMD_GET_CHANNELDATA; |
904 | cmdstring[1] = 0; | |
905 | ||
c118080b | 906 | if ((ret = send_bulkcmd(sdi, cmdstring, sizeof(cmdstring))) != SR_OK) { |
d4928d71 PS |
907 | sr_err("Failed to get channel data: %s.", |
908 | libusb_error_name(ret)); | |
3b533202 BV |
909 | return SR_ERR; |
910 | } | |
911 | ||
e98b7f1b UH |
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); | |
3b533202 | 916 | for (i = 0; i < num_transfers; i++) { |
269971dd | 917 | if (!(buf = g_try_malloc(devc->epin_maxpacketsize))) { |
e98b7f1b | 918 | sr_err("Failed to malloc USB endpoint buffer."); |
3b533202 BV |
919 | return SR_ERR_MALLOC; |
920 | } | |
921 | transfer = libusb_alloc_transfer(0); | |
c118080b | 922 | libusb_fill_bulk_transfer(transfer, usb->devhdl, DSO_EP_IN, buf, |
69e19dd7 | 923 | devc->epin_maxpacketsize, cb, (void *)sdi, 40); |
3b533202 | 924 | if ((ret = libusb_submit_transfer(transfer)) != 0) { |
d4928d71 PS |
925 | sr_err("Failed to submit transfer: %s.", |
926 | libusb_error_name(ret)); | |
3b533202 BV |
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 | } |