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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 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <math.h> | |
22 | #include <stdio.h> | |
23 | #include <stdint.h> | |
24 | #include <stdlib.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <fcntl.h> | |
28 | #include <unistd.h> | |
29 | #include <string.h> | |
30 | #include <sys/time.h> | |
31 | #include <inttypes.h> | |
32 | #include <glib.h> | |
33 | #include <libusb.h> | |
34 | #include <libsigrok/libsigrok.h> | |
35 | #include "libsigrok-internal.h" | |
36 | #include "protocol.h" | |
37 | ||
38 | /* Max time in ms before we want to check on USB events */ | |
39 | /* TODO tune this properly */ | |
40 | #define TICK 1 | |
41 | ||
42 | #define NUM_TIMEBASE 10 | |
43 | #define NUM_VDIV 8 | |
44 | ||
45 | #define NUM_BUFFER_SIZES 2 | |
46 | ||
47 | static const uint32_t scanopts[] = { | |
48 | SR_CONF_CONN, | |
49 | }; | |
50 | ||
51 | static const uint32_t drvopts[] = { | |
52 | SR_CONF_OSCILLOSCOPE, | |
53 | }; | |
54 | ||
55 | static const uint32_t devopts[] = { | |
56 | SR_CONF_CONTINUOUS, | |
57 | SR_CONF_CONN | SR_CONF_GET, | |
58 | SR_CONF_LIMIT_FRAMES | SR_CONF_SET, | |
59 | SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
60 | SR_CONF_NUM_HDIV | SR_CONF_GET, | |
61 | SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET, | |
62 | SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
63 | SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET, | |
64 | SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
65 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
66 | }; | |
67 | ||
68 | static const uint32_t devopts_cg[] = { | |
69 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
70 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
71 | SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
72 | }; | |
73 | ||
74 | static const char *channel_names[] = { | |
75 | "CH1", "CH2", | |
76 | }; | |
77 | ||
78 | static const uint64_t buffersizes_32k[] = { | |
79 | (10 * 1024), (32 * 1024), | |
80 | }; | |
81 | static const uint64_t buffersizes_512k[] = { | |
82 | (10 * 1024), (512 * 1024), | |
83 | }; | |
84 | static const uint64_t buffersizes_14k[] = { | |
85 | (10 * 1024), (14 * 1024), | |
86 | }; | |
87 | ||
88 | static const struct dso_profile dev_profiles[] = { | |
89 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
90 | "Hantek", "DSO-2090", | |
91 | buffersizes_32k, | |
92 | "hantek-dso-2090.fw" }, | |
93 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
94 | "Hantek", "DSO-2150", | |
95 | buffersizes_32k, | |
96 | "hantek-dso-2150.fw" }, | |
97 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
98 | "Hantek", "DSO-2250", | |
99 | buffersizes_512k, | |
100 | "hantek-dso-2250.fw" }, | |
101 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
102 | "Hantek", "DSO-5200", | |
103 | buffersizes_14k, | |
104 | "hantek-dso-5200.fw" }, | |
105 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
106 | "Hantek", "DSO-5200A", | |
107 | buffersizes_512k, | |
108 | "hantek-dso-5200A.fw" }, | |
109 | ALL_ZERO | |
110 | }; | |
111 | ||
112 | static const uint64_t timebases[][2] = { | |
113 | /* microseconds */ | |
114 | { 10, 1000000 }, | |
115 | { 20, 1000000 }, | |
116 | { 40, 1000000 }, | |
117 | { 100, 1000000 }, | |
118 | { 200, 1000000 }, | |
119 | { 400, 1000000 }, | |
120 | /* milliseconds */ | |
121 | { 1, 1000 }, | |
122 | { 2, 1000 }, | |
123 | { 4, 1000 }, | |
124 | { 10, 1000 }, | |
125 | { 20, 1000 }, | |
126 | { 40, 1000 }, | |
127 | { 100, 1000 }, | |
128 | { 200, 1000 }, | |
129 | { 400, 1000 }, | |
130 | }; | |
131 | ||
132 | static const uint64_t vdivs[][2] = { | |
133 | /* millivolts */ | |
134 | { 10, 1000 }, | |
135 | { 20, 1000 }, | |
136 | { 50, 1000 }, | |
137 | { 100, 1000 }, | |
138 | { 200, 1000 }, | |
139 | { 500, 1000 }, | |
140 | /* volts */ | |
141 | { 1, 1 }, | |
142 | { 2, 1 }, | |
143 | { 5, 1 }, | |
144 | }; | |
145 | ||
146 | static const char *trigger_sources[] = { | |
147 | "CH1", | |
148 | "CH2", | |
149 | "EXT", | |
150 | /* TODO: forced */ | |
151 | }; | |
152 | ||
153 | static const char *trigger_slopes[] = { | |
154 | "r", | |
155 | "f", | |
156 | }; | |
157 | ||
158 | static const char *coupling[] = { | |
159 | "AC", | |
160 | "DC", | |
161 | "GND", | |
162 | }; | |
163 | ||
164 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); | |
165 | ||
166 | static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof) | |
167 | { | |
168 | struct sr_dev_inst *sdi; | |
169 | struct sr_channel *ch; | |
170 | struct sr_channel_group *cg; | |
171 | struct dev_context *devc; | |
172 | unsigned int i; | |
173 | ||
174 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
175 | sdi->status = SR_ST_INITIALIZING; | |
176 | sdi->vendor = g_strdup(prof->vendor); | |
177 | sdi->model = g_strdup(prof->model); | |
178 | ||
179 | /* | |
180 | * Add only the real channels -- EXT isn't a source of data, only | |
181 | * a trigger source internal to the device. | |
182 | */ | |
183 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
184 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
185 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
186 | cg->name = g_strdup(channel_names[i]); | |
187 | cg->channels = g_slist_append(cg->channels, ch); | |
188 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
189 | } | |
190 | ||
191 | devc = g_malloc0(sizeof(struct dev_context)); | |
192 | devc->profile = prof; | |
193 | devc->dev_state = IDLE; | |
194 | devc->timebase = DEFAULT_TIMEBASE; | |
195 | devc->ch_enabled[0] = TRUE; | |
196 | devc->ch_enabled[1] = TRUE; | |
197 | devc->voltage[0] = DEFAULT_VOLTAGE; | |
198 | devc->voltage[1] = DEFAULT_VOLTAGE; | |
199 | devc->coupling[0] = DEFAULT_COUPLING; | |
200 | devc->coupling[1] = DEFAULT_COUPLING; | |
201 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
202 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
203 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
204 | devc->framesize = DEFAULT_FRAMESIZE; | |
205 | devc->triggerslope = SLOPE_POSITIVE; | |
206 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
207 | devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS; | |
208 | sdi->priv = devc; | |
209 | ||
210 | return sdi; | |
211 | } | |
212 | ||
213 | static int configure_channels(const struct sr_dev_inst *sdi) | |
214 | { | |
215 | struct dev_context *devc; | |
216 | struct sr_channel *ch; | |
217 | const GSList *l; | |
218 | int p; | |
219 | ||
220 | devc = sdi->priv; | |
221 | ||
222 | g_slist_free(devc->enabled_channels); | |
223 | devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE; | |
224 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
225 | ch = l->data; | |
226 | if (p == 0) | |
227 | devc->ch_enabled[0] = ch->enabled; | |
228 | else | |
229 | devc->ch_enabled[1] = ch->enabled; | |
230 | if (ch->enabled) | |
231 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
232 | } | |
233 | ||
234 | return SR_OK; | |
235 | } | |
236 | ||
237 | static void clear_dev_context(void *priv) | |
238 | { | |
239 | struct dev_context *devc; | |
240 | ||
241 | devc = priv; | |
242 | g_free(devc->triggersource); | |
243 | g_slist_free(devc->enabled_channels); | |
244 | ||
245 | } | |
246 | ||
247 | static int dev_clear(const struct sr_dev_driver *di) | |
248 | { | |
249 | return std_dev_clear(di, clear_dev_context); | |
250 | } | |
251 | ||
252 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
253 | { | |
254 | struct drv_context *drvc; | |
255 | struct dev_context *devc; | |
256 | struct sr_dev_inst *sdi; | |
257 | struct sr_usb_dev_inst *usb; | |
258 | struct sr_config *src; | |
259 | const struct dso_profile *prof; | |
260 | GSList *l, *devices, *conn_devices; | |
261 | struct libusb_device_descriptor des; | |
262 | libusb_device **devlist; | |
263 | int i, j; | |
264 | const char *conn; | |
265 | char connection_id[64]; | |
266 | ||
267 | drvc = di->context; | |
268 | ||
269 | devices = 0; | |
270 | ||
271 | conn = NULL; | |
272 | for (l = options; l; l = l->next) { | |
273 | src = l->data; | |
274 | if (src->key == SR_CONF_CONN) { | |
275 | conn = g_variant_get_string(src->data, NULL); | |
276 | break; | |
277 | } | |
278 | } | |
279 | if (conn) | |
280 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
281 | else | |
282 | conn_devices = NULL; | |
283 | ||
284 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
285 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
286 | for (i = 0; devlist[i]; i++) { | |
287 | if (conn) { | |
288 | usb = NULL; | |
289 | for (l = conn_devices; l; l = l->next) { | |
290 | usb = l->data; | |
291 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
292 | && usb->address == libusb_get_device_address(devlist[i])) | |
293 | break; | |
294 | } | |
295 | if (!l) | |
296 | /* This device matched none of the ones that | |
297 | * matched the conn specification. */ | |
298 | continue; | |
299 | } | |
300 | ||
301 | libusb_get_device_descriptor(devlist[i], &des); | |
302 | ||
303 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
304 | ||
305 | prof = NULL; | |
306 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
307 | if (des.idVendor == dev_profiles[j].orig_vid | |
308 | && des.idProduct == dev_profiles[j].orig_pid) { | |
309 | /* Device matches the pre-firmware profile. */ | |
310 | prof = &dev_profiles[j]; | |
311 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
312 | sdi = dso_dev_new(prof); | |
313 | sdi->connection_id = g_strdup(connection_id); | |
314 | devices = g_slist_append(devices, sdi); | |
315 | devc = sdi->priv; | |
316 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
317 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
318 | /* Remember when the firmware on this device was updated */ | |
319 | devc->fw_updated = g_get_monotonic_time(); | |
320 | else | |
321 | sr_err("Firmware upload failed"); | |
322 | /* Dummy USB address of 0xff will get overwritten later. */ | |
323 | sdi->conn = sr_usb_dev_inst_new( | |
324 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
325 | break; | |
326 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
327 | && des.idProduct == dev_profiles[j].fw_pid) { | |
328 | /* Device matches the post-firmware profile. */ | |
329 | prof = &dev_profiles[j]; | |
330 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
331 | sdi = dso_dev_new(prof); | |
332 | sdi->connection_id = g_strdup(connection_id); | |
333 | sdi->status = SR_ST_INACTIVE; | |
334 | devices = g_slist_append(devices, sdi); | |
335 | sdi->inst_type = SR_INST_USB; | |
336 | sdi->conn = sr_usb_dev_inst_new( | |
337 | libusb_get_bus_number(devlist[i]), | |
338 | libusb_get_device_address(devlist[i]), NULL); | |
339 | break; | |
340 | } | |
341 | } | |
342 | if (!prof) | |
343 | /* not a supported VID/PID */ | |
344 | continue; | |
345 | } | |
346 | libusb_free_device_list(devlist, 1); | |
347 | ||
348 | return std_scan_complete(di, devices); | |
349 | } | |
350 | ||
351 | static int dev_open(struct sr_dev_inst *sdi) | |
352 | { | |
353 | struct dev_context *devc; | |
354 | struct sr_usb_dev_inst *usb; | |
355 | int64_t timediff_us, timediff_ms; | |
356 | int err; | |
357 | ||
358 | devc = sdi->priv; | |
359 | usb = sdi->conn; | |
360 | ||
361 | /* | |
362 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
363 | * for the FX2 to renumerate. | |
364 | */ | |
365 | err = SR_ERR; | |
366 | if (devc->fw_updated > 0) { | |
367 | sr_info("Waiting for device to reset."); | |
368 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
369 | g_usleep(300 * 1000); | |
370 | timediff_ms = 0; | |
371 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
372 | if ((err = dso_open(sdi)) == SR_OK) | |
373 | break; | |
374 | g_usleep(100 * 1000); | |
375 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
376 | timediff_ms = timediff_us / 1000; | |
377 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
378 | } | |
379 | sr_info("Device came back after %" PRIi64 " ms.", timediff_ms); | |
380 | } else { | |
381 | err = dso_open(sdi); | |
382 | } | |
383 | ||
384 | if (err != SR_OK) { | |
385 | sr_err("Unable to open device."); | |
386 | return SR_ERR; | |
387 | } | |
388 | ||
389 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
390 | if (err != 0) { | |
391 | sr_err("Unable to claim interface: %s.", | |
392 | libusb_error_name(err)); | |
393 | return SR_ERR; | |
394 | } | |
395 | ||
396 | return SR_OK; | |
397 | } | |
398 | ||
399 | static int dev_close(struct sr_dev_inst *sdi) | |
400 | { | |
401 | dso_close(sdi); | |
402 | ||
403 | return SR_OK; | |
404 | } | |
405 | ||
406 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
407 | const struct sr_channel_group *cg) | |
408 | { | |
409 | struct dev_context *devc; | |
410 | struct sr_usb_dev_inst *usb; | |
411 | char str[128]; | |
412 | const char *s; | |
413 | const uint64_t *vdiv; | |
414 | int ch_idx; | |
415 | ||
416 | switch (key) { | |
417 | case SR_CONF_NUM_HDIV: | |
418 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
419 | break; | |
420 | case SR_CONF_NUM_VDIV: | |
421 | *data = g_variant_new_int32(NUM_VDIV); | |
422 | break; | |
423 | } | |
424 | ||
425 | if (!sdi) | |
426 | return SR_ERR_ARG; | |
427 | ||
428 | devc = sdi->priv; | |
429 | if (!cg) { | |
430 | switch (key) { | |
431 | case SR_CONF_CONN: | |
432 | if (!sdi->conn) | |
433 | return SR_ERR_ARG; | |
434 | usb = sdi->conn; | |
435 | if (usb->address == 255) | |
436 | /* Device still needs to re-enumerate after firmware | |
437 | * upload, so we don't know its (future) address. */ | |
438 | return SR_ERR; | |
439 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
440 | *data = g_variant_new_string(str); | |
441 | break; | |
442 | case SR_CONF_TIMEBASE: | |
443 | *data = g_variant_new("(tt)", timebases[devc->timebase][0], | |
444 | timebases[devc->timebase][1]); | |
445 | break; | |
446 | case SR_CONF_BUFFERSIZE: | |
447 | *data = g_variant_new_uint64(devc->framesize); | |
448 | break; | |
449 | case SR_CONF_TRIGGER_SOURCE: | |
450 | *data = g_variant_new_string(devc->triggersource); | |
451 | break; | |
452 | case SR_CONF_TRIGGER_SLOPE: | |
453 | s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f"; | |
454 | *data = g_variant_new_string(s); | |
455 | break; | |
456 | case SR_CONF_HORIZ_TRIGGERPOS: | |
457 | *data = g_variant_new_double(devc->triggerposition); | |
458 | break; | |
459 | default: | |
460 | return SR_ERR_NA; | |
461 | } | |
462 | } else { | |
463 | if (sdi->channel_groups->data == cg) | |
464 | ch_idx = 0; | |
465 | else if (sdi->channel_groups->next->data == cg) | |
466 | ch_idx = 1; | |
467 | else | |
468 | return SR_ERR_ARG; | |
469 | switch (key) { | |
470 | case SR_CONF_FILTER: | |
471 | *data = g_variant_new_boolean(devc->filter[ch_idx]); | |
472 | break; | |
473 | case SR_CONF_VDIV: | |
474 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
475 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
476 | break; | |
477 | case SR_CONF_COUPLING: | |
478 | *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]); | |
479 | break; | |
480 | } | |
481 | } | |
482 | ||
483 | return SR_OK; | |
484 | } | |
485 | ||
486 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
487 | const struct sr_channel_group *cg) | |
488 | { | |
489 | struct dev_context *devc; | |
490 | double tmp_double; | |
491 | uint64_t tmp_u64, p, q; | |
492 | int tmp_int, ch_idx, ret; | |
493 | unsigned int i; | |
494 | const char *tmp_str; | |
495 | ||
496 | if (sdi->status != SR_ST_ACTIVE) | |
497 | return SR_ERR_DEV_CLOSED; | |
498 | ||
499 | ret = SR_OK; | |
500 | devc = sdi->priv; | |
501 | if (!cg) { | |
502 | switch (key) { | |
503 | case SR_CONF_LIMIT_FRAMES: | |
504 | devc->limit_frames = g_variant_get_uint64(data); | |
505 | break; | |
506 | case SR_CONF_TRIGGER_SLOPE: | |
507 | tmp_str = g_variant_get_string(data, NULL); | |
508 | if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r')) | |
509 | return SR_ERR_ARG; | |
510 | devc->triggerslope = (tmp_str[0] == 'r') | |
511 | ? SLOPE_POSITIVE : SLOPE_NEGATIVE; | |
512 | break; | |
513 | case SR_CONF_HORIZ_TRIGGERPOS: | |
514 | tmp_double = g_variant_get_double(data); | |
515 | if (tmp_double < 0.0 || tmp_double > 1.0) { | |
516 | sr_err("Trigger position should be between 0.0 and 1.0."); | |
517 | ret = SR_ERR_ARG; | |
518 | } else | |
519 | devc->triggerposition = tmp_double; | |
520 | break; | |
521 | case SR_CONF_BUFFERSIZE: | |
522 | tmp_u64 = g_variant_get_uint64(data); | |
523 | for (i = 0; i < NUM_BUFFER_SIZES; i++) { | |
524 | if (devc->profile->buffersizes[i] == tmp_u64) { | |
525 | devc->framesize = tmp_u64; | |
526 | break; | |
527 | } | |
528 | } | |
529 | if (i == NUM_BUFFER_SIZES) | |
530 | ret = SR_ERR_ARG; | |
531 | break; | |
532 | case SR_CONF_TIMEBASE: | |
533 | g_variant_get(data, "(tt)", &p, &q); | |
534 | tmp_int = -1; | |
535 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
536 | if (timebases[i][0] == p && timebases[i][1] == q) { | |
537 | tmp_int = i; | |
538 | break; | |
539 | } | |
540 | } | |
541 | if (tmp_int >= 0) | |
542 | devc->timebase = tmp_int; | |
543 | else | |
544 | ret = SR_ERR_ARG; | |
545 | break; | |
546 | case SR_CONF_TRIGGER_SOURCE: | |
547 | tmp_str = g_variant_get_string(data, NULL); | |
548 | for (i = 0; trigger_sources[i]; i++) { | |
549 | if (!strcmp(tmp_str, trigger_sources[i])) { | |
550 | devc->triggersource = g_strdup(tmp_str); | |
551 | break; | |
552 | } | |
553 | } | |
554 | if (trigger_sources[i] == 0) | |
555 | ret = SR_ERR_ARG; | |
556 | break; | |
557 | default: | |
558 | ret = SR_ERR_NA; | |
559 | break; | |
560 | } | |
561 | } else { | |
562 | if (sdi->channel_groups->data == cg) | |
563 | ch_idx = 0; | |
564 | else if (sdi->channel_groups->next->data == cg) | |
565 | ch_idx = 1; | |
566 | else | |
567 | return SR_ERR_ARG; | |
568 | switch (key) { | |
569 | case SR_CONF_FILTER: | |
570 | devc->filter[ch_idx] = g_variant_get_boolean(data); | |
571 | break; | |
572 | case SR_CONF_VDIV: | |
573 | g_variant_get(data, "(tt)", &p, &q); | |
574 | tmp_int = -1; | |
575 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
576 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
577 | tmp_int = i; | |
578 | break; | |
579 | } | |
580 | } | |
581 | if (tmp_int >= 0) { | |
582 | devc->voltage[ch_idx] = tmp_int; | |
583 | } else | |
584 | ret = SR_ERR_ARG; | |
585 | break; | |
586 | case SR_CONF_COUPLING: | |
587 | tmp_str = g_variant_get_string(data, NULL); | |
588 | for (i = 0; coupling[i]; i++) { | |
589 | if (!strcmp(tmp_str, coupling[i])) { | |
590 | devc->coupling[ch_idx] = i; | |
591 | break; | |
592 | } | |
593 | } | |
594 | if (coupling[i] == 0) | |
595 | ret = SR_ERR_ARG; | |
596 | break; | |
597 | default: | |
598 | ret = SR_ERR_NA; | |
599 | break; | |
600 | } | |
601 | } | |
602 | ||
603 | return ret; | |
604 | } | |
605 | ||
606 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
607 | const struct sr_channel_group *cg) | |
608 | { | |
609 | struct dev_context *devc; | |
610 | GVariant *tuple, *rational[2]; | |
611 | GVariantBuilder gvb; | |
612 | unsigned int i; | |
613 | ||
614 | if (key == SR_CONF_SCAN_OPTIONS) { | |
615 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
616 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
617 | return SR_OK; | |
618 | } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
619 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
620 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
621 | return SR_OK; | |
622 | } | |
623 | ||
624 | if (!sdi) | |
625 | return SR_ERR_ARG; | |
626 | ||
627 | if (!cg) { | |
628 | switch (key) { | |
629 | case SR_CONF_DEVICE_OPTIONS: | |
630 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
631 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
632 | break; | |
633 | case SR_CONF_BUFFERSIZE: | |
634 | if (!sdi) | |
635 | return SR_ERR_ARG; | |
636 | devc = sdi->priv; | |
637 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
638 | devc->profile->buffersizes, NUM_BUFFER_SIZES, sizeof(uint64_t)); | |
639 | break; | |
640 | case SR_CONF_TIMEBASE: | |
641 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
642 | for (i = 0; i < ARRAY_SIZE(timebases); i++) { | |
643 | rational[0] = g_variant_new_uint64(timebases[i][0]); | |
644 | rational[1] = g_variant_new_uint64(timebases[i][1]); | |
645 | tuple = g_variant_new_tuple(rational, 2); | |
646 | g_variant_builder_add_value(&gvb, tuple); | |
647 | } | |
648 | *data = g_variant_builder_end(&gvb); | |
649 | break; | |
650 | case SR_CONF_TRIGGER_SOURCE: | |
651 | *data = g_variant_new_strv(trigger_sources, | |
652 | ARRAY_SIZE(trigger_sources)); | |
653 | break; | |
654 | case SR_CONF_TRIGGER_SLOPE: | |
655 | *data = g_variant_new_strv(trigger_slopes, | |
656 | ARRAY_SIZE(trigger_slopes)); | |
657 | break; | |
658 | default: | |
659 | return SR_ERR_NA; | |
660 | } | |
661 | } else { | |
662 | switch (key) { | |
663 | case SR_CONF_DEVICE_OPTIONS: | |
664 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
665 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t)); | |
666 | break; | |
667 | case SR_CONF_COUPLING: | |
668 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
669 | break; | |
670 | case SR_CONF_VDIV: | |
671 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
672 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
673 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
674 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
675 | tuple = g_variant_new_tuple(rational, 2); | |
676 | g_variant_builder_add_value(&gvb, tuple); | |
677 | } | |
678 | *data = g_variant_builder_end(&gvb); | |
679 | break; | |
680 | default: | |
681 | return SR_ERR_NA; | |
682 | } | |
683 | } | |
684 | ||
685 | return SR_OK; | |
686 | } | |
687 | ||
688 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
689 | int num_samples) | |
690 | { | |
691 | struct sr_datafeed_packet packet; | |
692 | struct sr_datafeed_analog analog; | |
693 | struct sr_analog_encoding encoding; | |
694 | struct sr_analog_meaning meaning; | |
695 | struct sr_analog_spec spec; | |
696 | struct dev_context *devc = sdi->priv; | |
697 | GSList *channels = devc->enabled_channels; | |
698 | ||
699 | packet.type = SR_DF_ANALOG; | |
700 | packet.payload = &analog; | |
701 | /* TODO: support for 5xxx series 9-bit samples */ | |
702 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
703 | analog.num_samples = num_samples; | |
704 | analog.meaning->mq = SR_MQ_VOLTAGE; | |
705 | analog.meaning->unit = SR_UNIT_VOLT; | |
706 | analog.meaning->mqflags = 0; | |
707 | /* TODO: Check malloc return value. */ | |
708 | analog.data = g_try_malloc(num_samples * sizeof(float)); | |
709 | ||
710 | for (int ch = 0; ch < 2; ch++) { | |
711 | if (!devc->ch_enabled[ch]) | |
712 | continue; | |
713 | ||
714 | float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8; | |
715 | float vdivlog = log10f(range / 255); | |
716 | int digits = -(int)vdivlog + (vdivlog < 0.0); | |
717 | analog.encoding->digits = digits; | |
718 | analog.spec->spec_digits = digits; | |
719 | analog.meaning->channels = g_slist_append(NULL, channels->data); | |
720 | ||
721 | for (int i = 0; i < num_samples; i++) { | |
722 | /* | |
723 | * The device always sends data for both channels. If a channel | |
724 | * is disabled, it contains a copy of the enabled channel's | |
725 | * data. However, we only send the requested channels to | |
726 | * the bus. | |
727 | * | |
728 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
729 | * DSO-5200*), where the value is a point in the range | |
730 | * represented by the vdiv setting. There are 8 vertical divs, | |
731 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
732 | * and 255 = +2V. | |
733 | */ | |
734 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
735 | ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2; | |
736 | } | |
737 | sr_session_send(sdi, &packet); | |
738 | g_slist_free(analog.meaning->channels); | |
739 | ||
740 | channels = channels->next; | |
741 | } | |
742 | g_free(analog.data); | |
743 | } | |
744 | ||
745 | /* | |
746 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
747 | * Only channel data comes in asynchronously, and all transfers for this are | |
748 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
749 | * the libsigrok session bus. | |
750 | */ | |
751 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
752 | { | |
753 | struct sr_datafeed_packet packet; | |
754 | struct sr_dev_inst *sdi; | |
755 | struct dev_context *devc; | |
756 | int num_samples, pre; | |
757 | ||
758 | sdi = transfer->user_data; | |
759 | devc = sdi->priv; | |
760 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
761 | libusb_error_name(transfer->status), transfer->actual_length); | |
762 | ||
763 | if (transfer->actual_length == 0) | |
764 | /* Nothing to send to the bus. */ | |
765 | return; | |
766 | ||
767 | num_samples = transfer->actual_length / 2; | |
768 | ||
769 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
770 | devc->samp_received + num_samples, devc->framesize); | |
771 | ||
772 | /* | |
773 | * The device always sends a full frame, but the beginning of the frame | |
774 | * doesn't represent the trigger point. The offset at which the trigger | |
775 | * happened came in with the capture state, so we need to start sending | |
776 | * from there up the session bus. The samples in the frame buffer | |
777 | * before that trigger point came after the end of the device's frame | |
778 | * buffer was reached, and it wrapped around to overwrite up until the | |
779 | * trigger point. | |
780 | */ | |
781 | if (devc->samp_received < devc->trigger_offset) { | |
782 | /* Trigger point not yet reached. */ | |
783 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
784 | /* The entire chunk is before the trigger point. */ | |
785 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
786 | transfer->buffer, num_samples * 2); | |
787 | devc->samp_buffered += num_samples; | |
788 | } else { | |
789 | /* | |
790 | * This chunk hits or overruns the trigger point. | |
791 | * Store the part before the trigger fired, and | |
792 | * send the rest up to the session bus. | |
793 | */ | |
794 | pre = devc->trigger_offset - devc->samp_received; | |
795 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
796 | transfer->buffer, pre * 2); | |
797 | devc->samp_buffered += pre; | |
798 | ||
799 | /* The rest of this chunk starts with the trigger point. */ | |
800 | sr_dbg("Reached trigger point, %d samples buffered.", | |
801 | devc->samp_buffered); | |
802 | ||
803 | /* Avoid the corner case where the chunk ended at | |
804 | * exactly the trigger point. */ | |
805 | if (num_samples > pre) | |
806 | send_chunk(sdi, transfer->buffer + pre * 2, | |
807 | num_samples - pre); | |
808 | } | |
809 | } else { | |
810 | /* Already past the trigger point, just send it all out. */ | |
811 | send_chunk(sdi, transfer->buffer, num_samples); | |
812 | } | |
813 | ||
814 | devc->samp_received += num_samples; | |
815 | ||
816 | /* Everything in this transfer was either copied to the buffer or | |
817 | * sent to the session bus. */ | |
818 | g_free(transfer->buffer); | |
819 | libusb_free_transfer(transfer); | |
820 | ||
821 | if (devc->samp_received >= devc->framesize) { | |
822 | /* That was the last chunk in this frame. Send the buffered | |
823 | * pre-trigger samples out now, in one big chunk. */ | |
824 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
825 | devc->samp_buffered); | |
826 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
827 | ||
828 | /* Mark the end of this frame. */ | |
829 | packet.type = SR_DF_FRAME_END; | |
830 | sr_session_send(sdi, &packet); | |
831 | ||
832 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
833 | /* Terminate session */ | |
834 | devc->dev_state = STOPPING; | |
835 | } else { | |
836 | devc->dev_state = NEW_CAPTURE; | |
837 | } | |
838 | } | |
839 | } | |
840 | ||
841 | static int handle_event(int fd, int revents, void *cb_data) | |
842 | { | |
843 | const struct sr_dev_inst *sdi; | |
844 | struct sr_datafeed_packet packet; | |
845 | struct timeval tv; | |
846 | struct sr_dev_driver *di; | |
847 | struct dev_context *devc; | |
848 | struct drv_context *drvc; | |
849 | int num_channels; | |
850 | uint32_t trigger_offset; | |
851 | uint8_t capturestate; | |
852 | ||
853 | (void)fd; | |
854 | (void)revents; | |
855 | ||
856 | sdi = cb_data; | |
857 | di = sdi->driver; | |
858 | drvc = di->context; | |
859 | devc = sdi->priv; | |
860 | if (devc->dev_state == STOPPING) { | |
861 | /* We've been told to wind up the acquisition. */ | |
862 | sr_dbg("Stopping acquisition."); | |
863 | /* | |
864 | * TODO: Doesn't really cancel pending transfers so they might | |
865 | * come in after SR_DF_END is sent. | |
866 | */ | |
867 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
868 | ||
869 | std_session_send_df_end(sdi); | |
870 | ||
871 | devc->dev_state = IDLE; | |
872 | ||
873 | return TRUE; | |
874 | } | |
875 | ||
876 | /* Always handle pending libusb events. */ | |
877 | tv.tv_sec = tv.tv_usec = 0; | |
878 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
879 | ||
880 | /* TODO: ugh */ | |
881 | if (devc->dev_state == NEW_CAPTURE) { | |
882 | if (dso_capture_start(sdi) != SR_OK) | |
883 | return TRUE; | |
884 | if (dso_enable_trigger(sdi) != SR_OK) | |
885 | return TRUE; | |
886 | // if (dso_force_trigger(sdi) != SR_OK) | |
887 | // return TRUE; | |
888 | sr_dbg("Successfully requested next chunk."); | |
889 | devc->dev_state = CAPTURE; | |
890 | return TRUE; | |
891 | } | |
892 | if (devc->dev_state != CAPTURE) | |
893 | return TRUE; | |
894 | ||
895 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
896 | return TRUE; | |
897 | ||
898 | sr_dbg("Capturestate %d.", capturestate); | |
899 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
900 | switch (capturestate) { | |
901 | case CAPTURE_EMPTY: | |
902 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
903 | devc->capture_empty_count = 0; | |
904 | if (dso_capture_start(sdi) != SR_OK) | |
905 | break; | |
906 | if (dso_enable_trigger(sdi) != SR_OK) | |
907 | break; | |
908 | // if (dso_force_trigger(sdi) != SR_OK) | |
909 | // break; | |
910 | sr_dbg("Successfully requested next chunk."); | |
911 | } | |
912 | break; | |
913 | case CAPTURE_FILLING: | |
914 | /* No data yet. */ | |
915 | break; | |
916 | case CAPTURE_READY_8BIT: | |
917 | /* Remember where in the captured frame the trigger is. */ | |
918 | devc->trigger_offset = trigger_offset; | |
919 | ||
920 | num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1; | |
921 | devc->framebuf = g_malloc(devc->framesize * num_channels * 2); | |
922 | devc->samp_buffered = devc->samp_received = 0; | |
923 | ||
924 | /* Tell the scope to send us the first frame. */ | |
925 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
926 | break; | |
927 | ||
928 | /* | |
929 | * Don't hit the state machine again until we're done fetching | |
930 | * the data we just told the scope to send. | |
931 | */ | |
932 | devc->dev_state = FETCH_DATA; | |
933 | ||
934 | /* Tell the frontend a new frame is on the way. */ | |
935 | packet.type = SR_DF_FRAME_BEGIN; | |
936 | sr_session_send(sdi, &packet); | |
937 | break; | |
938 | case CAPTURE_READY_9BIT: | |
939 | /* TODO */ | |
940 | sr_err("Not yet supported."); | |
941 | break; | |
942 | case CAPTURE_TIMEOUT: | |
943 | /* Doesn't matter, we'll try again next time. */ | |
944 | break; | |
945 | default: | |
946 | sr_dbg("Unknown capture state: %d.", capturestate); | |
947 | break; | |
948 | } | |
949 | ||
950 | return TRUE; | |
951 | } | |
952 | ||
953 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
954 | { | |
955 | struct dev_context *devc; | |
956 | struct sr_dev_driver *di = sdi->driver; | |
957 | struct drv_context *drvc = di->context; | |
958 | ||
959 | if (sdi->status != SR_ST_ACTIVE) | |
960 | return SR_ERR_DEV_CLOSED; | |
961 | ||
962 | devc = sdi->priv; | |
963 | ||
964 | if (configure_channels(sdi) != SR_OK) { | |
965 | sr_err("Failed to configure channels."); | |
966 | return SR_ERR; | |
967 | } | |
968 | ||
969 | if (dso_init(sdi) != SR_OK) | |
970 | return SR_ERR; | |
971 | ||
972 | if (dso_capture_start(sdi) != SR_OK) | |
973 | return SR_ERR; | |
974 | ||
975 | devc->dev_state = CAPTURE; | |
976 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi); | |
977 | ||
978 | std_session_send_df_header(sdi); | |
979 | ||
980 | return SR_OK; | |
981 | } | |
982 | ||
983 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
984 | { | |
985 | struct dev_context *devc; | |
986 | ||
987 | if (sdi->status != SR_ST_ACTIVE) | |
988 | return SR_ERR; | |
989 | ||
990 | devc = sdi->priv; | |
991 | devc->dev_state = STOPPING; | |
992 | ||
993 | return SR_OK; | |
994 | } | |
995 | ||
996 | static struct sr_dev_driver hantek_dso_driver_info = { | |
997 | .name = "hantek-dso", | |
998 | .longname = "Hantek DSO", | |
999 | .api_version = 1, | |
1000 | .init = std_init, | |
1001 | .cleanup = std_cleanup, | |
1002 | .scan = scan, | |
1003 | .dev_list = std_dev_list, | |
1004 | .dev_clear = dev_clear, | |
1005 | .config_get = config_get, | |
1006 | .config_set = config_set, | |
1007 | .config_list = config_list, | |
1008 | .dev_open = dev_open, | |
1009 | .dev_close = dev_close, | |
1010 | .dev_acquisition_start = dev_acquisition_start, | |
1011 | .dev_acquisition_stop = dev_acquisition_stop, | |
1012 | .context = NULL, | |
1013 | }; | |
1014 | SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info); |