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