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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_CAPTURE_RATIO | 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_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
66 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
67 | }; | |
68 | ||
69 | static const uint32_t devopts_cg[] = { | |
70 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
71 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
72 | SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
73 | }; | |
74 | ||
75 | static const char *channel_names[] = { | |
76 | "CH1", "CH2", | |
77 | }; | |
78 | ||
79 | static const uint64_t buffersizes_32k[] = { | |
80 | (10 * 1024), (32 * 1024), | |
81 | }; | |
82 | static const uint64_t buffersizes_512k[] = { | |
83 | (10 * 1024), (512 * 1024), | |
84 | }; | |
85 | static const uint64_t buffersizes_14k[] = { | |
86 | (10 * 1024), (14 * 1024), | |
87 | }; | |
88 | ||
89 | static const struct dso_profile dev_profiles[] = { | |
90 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
91 | "Hantek", "DSO-2090", | |
92 | buffersizes_32k, | |
93 | "hantek-dso-2090.fw" }, | |
94 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
95 | "Hantek", "DSO-2150", | |
96 | buffersizes_32k, | |
97 | "hantek-dso-2150.fw" }, | |
98 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
99 | "Hantek", "DSO-2250", | |
100 | buffersizes_512k, | |
101 | "hantek-dso-2250.fw" }, | |
102 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
103 | "Hantek", "DSO-5200", | |
104 | buffersizes_14k, | |
105 | "hantek-dso-5200.fw" }, | |
106 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
107 | "Hantek", "DSO-5200A", | |
108 | buffersizes_512k, | |
109 | "hantek-dso-5200A.fw" }, | |
110 | ALL_ZERO | |
111 | }; | |
112 | ||
113 | static const uint64_t timebases[][2] = { | |
114 | /* microseconds */ | |
115 | { 10, 1000000 }, | |
116 | { 20, 1000000 }, | |
117 | { 40, 1000000 }, | |
118 | { 100, 1000000 }, | |
119 | { 200, 1000000 }, | |
120 | { 400, 1000000 }, | |
121 | /* milliseconds */ | |
122 | { 1, 1000 }, | |
123 | { 2, 1000 }, | |
124 | { 4, 1000 }, | |
125 | { 10, 1000 }, | |
126 | { 20, 1000 }, | |
127 | { 40, 1000 }, | |
128 | { 100, 1000 }, | |
129 | { 200, 1000 }, | |
130 | { 400, 1000 }, | |
131 | }; | |
132 | ||
133 | static const uint64_t samplerates[] = { | |
134 | SR_KHZ(20), | |
135 | SR_KHZ(25), | |
136 | SR_KHZ(50), | |
137 | SR_KHZ(100), | |
138 | SR_KHZ(200), | |
139 | SR_KHZ(250), | |
140 | SR_KHZ(500), | |
141 | SR_MHZ(1), | |
142 | SR_MHZ(2), | |
143 | SR_MHZ(5), | |
144 | SR_MHZ(10), | |
145 | SR_MHZ(20), | |
146 | SR_MHZ(25), | |
147 | SR_MHZ(50), | |
148 | SR_MHZ(100), | |
149 | SR_MHZ(125), | |
150 | /* fast mode not supported yet | |
151 | SR_MHZ(200), | |
152 | SR_MHZ(250), */ | |
153 | }; | |
154 | ||
155 | static const uint64_t vdivs[][2] = { | |
156 | /* millivolts */ | |
157 | { 10, 1000 }, | |
158 | { 20, 1000 }, | |
159 | { 50, 1000 }, | |
160 | { 100, 1000 }, | |
161 | { 200, 1000 }, | |
162 | { 500, 1000 }, | |
163 | /* volts */ | |
164 | { 1, 1 }, | |
165 | { 2, 1 }, | |
166 | { 5, 1 }, | |
167 | }; | |
168 | ||
169 | static const char *trigger_sources[] = { | |
170 | "CH1", "CH2", "EXT", | |
171 | /* TODO: forced */ | |
172 | }; | |
173 | ||
174 | static const char *trigger_slopes[] = { | |
175 | "r", "f", | |
176 | }; | |
177 | ||
178 | static const char *coupling[] = { | |
179 | "AC", "DC", "GND", | |
180 | }; | |
181 | ||
182 | static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof) | |
183 | { | |
184 | struct sr_dev_inst *sdi; | |
185 | struct sr_channel *ch; | |
186 | struct sr_channel_group *cg; | |
187 | struct dev_context *devc; | |
188 | unsigned int i; | |
189 | ||
190 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
191 | sdi->status = SR_ST_INITIALIZING; | |
192 | sdi->vendor = g_strdup(prof->vendor); | |
193 | sdi->model = g_strdup(prof->model); | |
194 | ||
195 | /* | |
196 | * Add only the real channels -- EXT isn't a source of data, only | |
197 | * a trigger source internal to the device. | |
198 | */ | |
199 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
200 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
201 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
202 | cg->name = g_strdup(channel_names[i]); | |
203 | cg->channels = g_slist_append(cg->channels, ch); | |
204 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
205 | } | |
206 | ||
207 | devc = g_malloc0(sizeof(struct dev_context)); | |
208 | devc->profile = prof; | |
209 | devc->dev_state = IDLE; | |
210 | devc->timebase = DEFAULT_TIMEBASE; | |
211 | devc->samplerate = DEFAULT_SAMPLERATE; | |
212 | devc->ch_enabled[0] = TRUE; | |
213 | devc->ch_enabled[1] = TRUE; | |
214 | devc->voltage[0] = DEFAULT_VOLTAGE; | |
215 | devc->voltage[1] = DEFAULT_VOLTAGE; | |
216 | devc->coupling[0] = DEFAULT_COUPLING; | |
217 | devc->coupling[1] = DEFAULT_COUPLING; | |
218 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
219 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
220 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
221 | devc->framesize = DEFAULT_FRAMESIZE; | |
222 | devc->triggerslope = SLOPE_POSITIVE; | |
223 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
224 | devc->capture_ratio = DEFAULT_CAPTURE_RATIO; | |
225 | sdi->priv = devc; | |
226 | ||
227 | return sdi; | |
228 | } | |
229 | ||
230 | static int configure_channels(const struct sr_dev_inst *sdi) | |
231 | { | |
232 | struct dev_context *devc; | |
233 | struct sr_channel *ch; | |
234 | const GSList *l; | |
235 | int p; | |
236 | ||
237 | devc = sdi->priv; | |
238 | ||
239 | g_slist_free(devc->enabled_channels); | |
240 | devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE; | |
241 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
242 | ch = l->data; | |
243 | if (p == 0) | |
244 | devc->ch_enabled[0] = ch->enabled; | |
245 | else | |
246 | devc->ch_enabled[1] = ch->enabled; | |
247 | if (ch->enabled) | |
248 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
249 | } | |
250 | ||
251 | return SR_OK; | |
252 | } | |
253 | ||
254 | static void clear_helper(struct dev_context *devc) | |
255 | { | |
256 | g_free(devc->triggersource); | |
257 | g_slist_free(devc->enabled_channels); | |
258 | } | |
259 | ||
260 | static int dev_clear(const struct sr_dev_driver *di) | |
261 | { | |
262 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
263 | } | |
264 | ||
265 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
266 | { | |
267 | struct drv_context *drvc; | |
268 | struct dev_context *devc; | |
269 | struct sr_dev_inst *sdi; | |
270 | struct sr_usb_dev_inst *usb; | |
271 | struct sr_config *src; | |
272 | const struct dso_profile *prof; | |
273 | GSList *l, *devices, *conn_devices; | |
274 | struct libusb_device_descriptor des; | |
275 | libusb_device **devlist; | |
276 | int i, j; | |
277 | const char *conn; | |
278 | char connection_id[64]; | |
279 | ||
280 | drvc = di->context; | |
281 | ||
282 | devices = 0; | |
283 | ||
284 | conn = NULL; | |
285 | for (l = options; l; l = l->next) { | |
286 | src = l->data; | |
287 | if (src->key == SR_CONF_CONN) { | |
288 | conn = g_variant_get_string(src->data, NULL); | |
289 | break; | |
290 | } | |
291 | } | |
292 | if (conn) | |
293 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
294 | else | |
295 | conn_devices = NULL; | |
296 | ||
297 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
298 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
299 | for (i = 0; devlist[i]; i++) { | |
300 | if (conn) { | |
301 | usb = NULL; | |
302 | for (l = conn_devices; l; l = l->next) { | |
303 | usb = l->data; | |
304 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
305 | && usb->address == libusb_get_device_address(devlist[i])) | |
306 | break; | |
307 | } | |
308 | if (!l) | |
309 | /* This device matched none of the ones that | |
310 | * matched the conn specification. */ | |
311 | continue; | |
312 | } | |
313 | ||
314 | libusb_get_device_descriptor(devlist[i], &des); | |
315 | ||
316 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
317 | ||
318 | prof = NULL; | |
319 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
320 | if (des.idVendor == dev_profiles[j].orig_vid | |
321 | && des.idProduct == dev_profiles[j].orig_pid) { | |
322 | /* Device matches the pre-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 | devices = g_slist_append(devices, sdi); | |
328 | devc = sdi->priv; | |
329 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
330 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
331 | /* Remember when the firmware on this device was updated */ | |
332 | devc->fw_updated = g_get_monotonic_time(); | |
333 | else | |
334 | sr_err("Firmware upload failed"); | |
335 | /* Dummy USB address of 0xff will get overwritten later. */ | |
336 | sdi->conn = sr_usb_dev_inst_new( | |
337 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
338 | break; | |
339 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
340 | && des.idProduct == dev_profiles[j].fw_pid) { | |
341 | /* Device matches the post-firmware profile. */ | |
342 | prof = &dev_profiles[j]; | |
343 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
344 | sdi = dso_dev_new(prof); | |
345 | sdi->connection_id = g_strdup(connection_id); | |
346 | sdi->status = SR_ST_INACTIVE; | |
347 | devices = g_slist_append(devices, sdi); | |
348 | sdi->inst_type = SR_INST_USB; | |
349 | sdi->conn = sr_usb_dev_inst_new( | |
350 | libusb_get_bus_number(devlist[i]), | |
351 | libusb_get_device_address(devlist[i]), NULL); | |
352 | break; | |
353 | } | |
354 | } | |
355 | if (!prof) | |
356 | /* not a supported VID/PID */ | |
357 | continue; | |
358 | } | |
359 | libusb_free_device_list(devlist, 1); | |
360 | ||
361 | return std_scan_complete(di, devices); | |
362 | } | |
363 | ||
364 | static int dev_open(struct sr_dev_inst *sdi) | |
365 | { | |
366 | struct dev_context *devc; | |
367 | struct sr_usb_dev_inst *usb; | |
368 | int64_t timediff_us, timediff_ms; | |
369 | int err; | |
370 | ||
371 | devc = sdi->priv; | |
372 | usb = sdi->conn; | |
373 | ||
374 | /* | |
375 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
376 | * for the FX2 to renumerate. | |
377 | */ | |
378 | err = SR_ERR; | |
379 | if (devc->fw_updated > 0) { | |
380 | sr_info("Waiting for device to reset."); | |
381 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
382 | g_usleep(300 * 1000); | |
383 | timediff_ms = 0; | |
384 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
385 | if ((err = dso_open(sdi)) == SR_OK) | |
386 | break; | |
387 | g_usleep(100 * 1000); | |
388 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
389 | timediff_ms = timediff_us / 1000; | |
390 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
391 | } | |
392 | sr_info("Device came back after %" PRIi64 " ms.", timediff_ms); | |
393 | } else { | |
394 | err = dso_open(sdi); | |
395 | } | |
396 | ||
397 | if (err != SR_OK) { | |
398 | sr_err("Unable to open device."); | |
399 | return SR_ERR; | |
400 | } | |
401 | ||
402 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
403 | if (err != 0) { | |
404 | sr_err("Unable to claim interface: %s.", | |
405 | libusb_error_name(err)); | |
406 | return SR_ERR; | |
407 | } | |
408 | ||
409 | return SR_OK; | |
410 | } | |
411 | ||
412 | static int dev_close(struct sr_dev_inst *sdi) | |
413 | { | |
414 | dso_close(sdi); | |
415 | ||
416 | return SR_OK; | |
417 | } | |
418 | ||
419 | static int config_get(uint32_t key, GVariant **data, | |
420 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
421 | { | |
422 | struct dev_context *devc; | |
423 | struct sr_usb_dev_inst *usb; | |
424 | const char *s; | |
425 | const uint64_t *vdiv; | |
426 | int ch_idx; | |
427 | ||
428 | switch (key) { | |
429 | case SR_CONF_NUM_HDIV: | |
430 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
431 | break; | |
432 | case SR_CONF_NUM_VDIV: | |
433 | *data = g_variant_new_int32(NUM_VDIV); | |
434 | break; | |
435 | } | |
436 | ||
437 | if (!sdi) | |
438 | return SR_ERR_ARG; | |
439 | ||
440 | devc = sdi->priv; | |
441 | if (!cg) { | |
442 | switch (key) { | |
443 | case SR_CONF_CONN: | |
444 | if (!sdi->conn) | |
445 | return SR_ERR_ARG; | |
446 | usb = sdi->conn; | |
447 | if (usb->address == 255) | |
448 | /* Device still needs to re-enumerate after firmware | |
449 | * upload, so we don't know its (future) address. */ | |
450 | return SR_ERR; | |
451 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); | |
452 | break; | |
453 | case SR_CONF_TIMEBASE: | |
454 | *data = g_variant_new("(tt)", timebases[devc->timebase][0], | |
455 | timebases[devc->timebase][1]); | |
456 | break; | |
457 | case SR_CONF_SAMPLERATE: | |
458 | *data = g_variant_new_uint64(devc->samplerate); | |
459 | break; | |
460 | case SR_CONF_BUFFERSIZE: | |
461 | *data = g_variant_new_uint64(devc->framesize); | |
462 | break; | |
463 | case SR_CONF_TRIGGER_SOURCE: | |
464 | *data = g_variant_new_string(devc->triggersource); | |
465 | break; | |
466 | case SR_CONF_TRIGGER_SLOPE: | |
467 | s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f"; | |
468 | *data = g_variant_new_string(s); | |
469 | break; | |
470 | case SR_CONF_CAPTURE_RATIO: | |
471 | *data = g_variant_new_uint64(devc->capture_ratio); | |
472 | break; | |
473 | default: | |
474 | return SR_ERR_NA; | |
475 | } | |
476 | } else { | |
477 | if (sdi->channel_groups->data == cg) | |
478 | ch_idx = 0; | |
479 | else if (sdi->channel_groups->next->data == cg) | |
480 | ch_idx = 1; | |
481 | else | |
482 | return SR_ERR_ARG; | |
483 | switch (key) { | |
484 | case SR_CONF_FILTER: | |
485 | *data = g_variant_new_boolean(devc->filter[ch_idx]); | |
486 | break; | |
487 | case SR_CONF_VDIV: | |
488 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
489 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
490 | break; | |
491 | case SR_CONF_COUPLING: | |
492 | *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]); | |
493 | break; | |
494 | } | |
495 | } | |
496 | ||
497 | return SR_OK; | |
498 | } | |
499 | ||
500 | static int config_set(uint32_t key, GVariant *data, | |
501 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
502 | { | |
503 | struct dev_context *devc; | |
504 | int rat; | |
505 | int ch_idx, idx; | |
506 | ||
507 | devc = sdi->priv; | |
508 | if (!cg) { | |
509 | switch (key) { | |
510 | case SR_CONF_LIMIT_FRAMES: | |
511 | devc->limit_frames = g_variant_get_uint64(data); | |
512 | break; | |
513 | case SR_CONF_TRIGGER_SLOPE: | |
514 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0) | |
515 | return SR_ERR_ARG; | |
516 | devc->triggerslope = idx; | |
517 | break; | |
518 | case SR_CONF_CAPTURE_RATIO: | |
519 | rat = g_variant_get_uint64(data); | |
520 | if (rat < 0 || rat > 100) { | |
521 | sr_err("Capture ratio must be in [0,100]."); | |
522 | return SR_ERR_ARG; | |
523 | } else | |
524 | devc->capture_ratio = rat; | |
525 | break; | |
526 | case SR_CONF_BUFFERSIZE: | |
527 | if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0) | |
528 | return SR_ERR_ARG; | |
529 | devc->framesize = devc->profile->buffersizes[idx]; | |
530 | break; | |
531 | case SR_CONF_TIMEBASE: | |
532 | if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0) | |
533 | return SR_ERR_ARG; | |
534 | devc->timebase = idx; | |
535 | break; | |
536 | case SR_CONF_SAMPLERATE: | |
537 | if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0) | |
538 | return SR_ERR_ARG; | |
539 | devc->samplerate = samplerates[idx]; | |
540 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
541 | return SR_ERR; | |
542 | sr_dbg("got new sample rate %d, idx %d", devc->samplerate, idx); | |
543 | break; | |
544 | case SR_CONF_TRIGGER_SOURCE: | |
545 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0) | |
546 | return SR_ERR_ARG; | |
547 | devc->triggersource = g_strdup(trigger_sources[idx]); | |
548 | break; | |
549 | default: | |
550 | return SR_ERR_NA; | |
551 | } | |
552 | } else { | |
553 | if (sdi->channel_groups->data == cg) | |
554 | ch_idx = 0; | |
555 | else if (sdi->channel_groups->next->data == cg) | |
556 | ch_idx = 1; | |
557 | else | |
558 | return SR_ERR_ARG; | |
559 | switch (key) { | |
560 | case SR_CONF_FILTER: | |
561 | devc->filter[ch_idx] = g_variant_get_boolean(data); | |
562 | break; | |
563 | case SR_CONF_VDIV: | |
564 | if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0) | |
565 | return SR_ERR_ARG; | |
566 | devc->voltage[ch_idx] = idx; | |
567 | break; | |
568 | case SR_CONF_COUPLING: | |
569 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0) | |
570 | return SR_ERR_ARG; | |
571 | devc->coupling[ch_idx] = idx; | |
572 | break; | |
573 | default: | |
574 | return SR_ERR_NA; | |
575 | } | |
576 | } | |
577 | ||
578 | return SR_OK; | |
579 | } | |
580 | ||
581 | static int config_list(uint32_t key, GVariant **data, | |
582 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
583 | { | |
584 | struct dev_context *devc; | |
585 | ||
586 | if (!cg) { | |
587 | switch (key) { | |
588 | case SR_CONF_SCAN_OPTIONS: | |
589 | case SR_CONF_DEVICE_OPTIONS: | |
590 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
591 | case SR_CONF_BUFFERSIZE: | |
592 | if (!sdi) | |
593 | return SR_ERR_ARG; | |
594 | devc = sdi->priv; | |
595 | *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES); | |
596 | break; | |
597 | case SR_CONF_SAMPLERATE: | |
598 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates)); | |
599 | break; | |
600 | case SR_CONF_TIMEBASE: | |
601 | *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases)); | |
602 | break; | |
603 | case SR_CONF_TRIGGER_SOURCE: | |
604 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources)); | |
605 | break; | |
606 | case SR_CONF_TRIGGER_SLOPE: | |
607 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes)); | |
608 | break; | |
609 | default: | |
610 | return SR_ERR_NA; | |
611 | } | |
612 | } else { | |
613 | switch (key) { | |
614 | case SR_CONF_DEVICE_OPTIONS: | |
615 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg)); | |
616 | break; | |
617 | case SR_CONF_COUPLING: | |
618 | *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling)); | |
619 | break; | |
620 | case SR_CONF_VDIV: | |
621 | *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs)); | |
622 | break; | |
623 | default: | |
624 | return SR_ERR_NA; | |
625 | } | |
626 | } | |
627 | ||
628 | return SR_OK; | |
629 | } | |
630 | ||
631 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
632 | int num_samples) | |
633 | { | |
634 | struct sr_datafeed_packet packet; | |
635 | struct sr_datafeed_analog analog; | |
636 | struct sr_analog_encoding encoding; | |
637 | struct sr_analog_meaning meaning; | |
638 | struct sr_analog_spec spec; | |
639 | struct dev_context *devc = sdi->priv; | |
640 | GSList *channels = devc->enabled_channels; | |
641 | ||
642 | packet.type = SR_DF_ANALOG; | |
643 | packet.payload = &analog; | |
644 | /* TODO: support for 5xxx series 9-bit samples */ | |
645 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
646 | analog.num_samples = num_samples; | |
647 | analog.meaning->mq = SR_MQ_VOLTAGE; | |
648 | analog.meaning->unit = SR_UNIT_VOLT; | |
649 | analog.meaning->mqflags = 0; | |
650 | /* TODO: Check malloc return value. */ | |
651 | analog.data = g_try_malloc(num_samples * sizeof(float)); | |
652 | ||
653 | for (int ch = 0; ch < NUM_CHANNELS; ch++) { | |
654 | if (!devc->ch_enabled[ch]) | |
655 | continue; | |
656 | ||
657 | float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8; | |
658 | float vdivlog = log10f(range / 255); | |
659 | int digits = -(int)vdivlog + (vdivlog < 0.0); | |
660 | analog.encoding->digits = digits; | |
661 | analog.spec->spec_digits = digits; | |
662 | analog.meaning->channels = g_slist_append(NULL, channels->data); | |
663 | ||
664 | for (int i = 0; i < num_samples; i++) { | |
665 | /* | |
666 | * The device always sends data for both channels. If a channel | |
667 | * is disabled, it contains a copy of the enabled channel's | |
668 | * data. However, we only send the requested channels to | |
669 | * the bus. | |
670 | * | |
671 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
672 | * DSO-5200*), where the value is a point in the range | |
673 | * represented by the vdiv setting. There are 8 vertical divs, | |
674 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
675 | * and 255 = +2V. | |
676 | */ | |
677 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
678 | ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2; | |
679 | } | |
680 | sr_session_send(sdi, &packet); | |
681 | g_slist_free(analog.meaning->channels); | |
682 | ||
683 | channels = channels->next; | |
684 | } | |
685 | g_free(analog.data); | |
686 | } | |
687 | ||
688 | /* | |
689 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
690 | * Only channel data comes in asynchronously, and all transfers for this are | |
691 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
692 | * the libsigrok session bus. | |
693 | */ | |
694 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
695 | { | |
696 | struct sr_datafeed_packet packet; | |
697 | struct sr_dev_inst *sdi; | |
698 | struct dev_context *devc; | |
699 | int num_samples, pre; | |
700 | ||
701 | sdi = transfer->user_data; | |
702 | devc = sdi->priv; | |
703 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
704 | libusb_error_name(transfer->status), transfer->actual_length); | |
705 | ||
706 | if (transfer->actual_length == 0) | |
707 | /* Nothing to send to the bus. */ | |
708 | return; | |
709 | ||
710 | num_samples = transfer->actual_length / 2; | |
711 | ||
712 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
713 | devc->samp_received + num_samples, devc->framesize); | |
714 | ||
715 | /* | |
716 | * The device always sends a full frame, but the beginning of the frame | |
717 | * doesn't represent the trigger point. The offset at which the trigger | |
718 | * happened came in with the capture state, so we need to start sending | |
719 | * from there up the session bus. The samples in the frame buffer | |
720 | * before that trigger point came after the end of the device's frame | |
721 | * buffer was reached, and it wrapped around to overwrite up until the | |
722 | * trigger point. | |
723 | */ | |
724 | if (devc->samp_received < devc->trigger_offset) { | |
725 | /* Trigger point not yet reached. */ | |
726 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
727 | /* The entire chunk is before the trigger point. */ | |
728 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
729 | transfer->buffer, num_samples * 2); | |
730 | devc->samp_buffered += num_samples; | |
731 | } else { | |
732 | /* | |
733 | * This chunk hits or overruns the trigger point. | |
734 | * Store the part before the trigger fired, and | |
735 | * send the rest up to the session bus. | |
736 | */ | |
737 | pre = devc->trigger_offset - devc->samp_received; | |
738 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
739 | transfer->buffer, pre * 2); | |
740 | devc->samp_buffered += pre; | |
741 | ||
742 | /* The rest of this chunk starts with the trigger point. */ | |
743 | sr_dbg("Reached trigger point, %d samples buffered.", | |
744 | devc->samp_buffered); | |
745 | ||
746 | /* Avoid the corner case where the chunk ended at | |
747 | * exactly the trigger point. */ | |
748 | if (num_samples > pre) | |
749 | send_chunk(sdi, transfer->buffer + pre * 2, | |
750 | num_samples - pre); | |
751 | } | |
752 | } else { | |
753 | /* Already past the trigger point, just send it all out. */ | |
754 | send_chunk(sdi, transfer->buffer, num_samples); | |
755 | } | |
756 | ||
757 | devc->samp_received += num_samples; | |
758 | ||
759 | /* Everything in this transfer was either copied to the buffer or | |
760 | * sent to the session bus. */ | |
761 | g_free(transfer->buffer); | |
762 | libusb_free_transfer(transfer); | |
763 | ||
764 | if (devc->samp_received >= devc->framesize) { | |
765 | /* That was the last chunk in this frame. Send the buffered | |
766 | * pre-trigger samples out now, in one big chunk. */ | |
767 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
768 | devc->samp_buffered); | |
769 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
770 | ||
771 | /* Mark the end of this frame. */ | |
772 | packet.type = SR_DF_FRAME_END; | |
773 | sr_session_send(sdi, &packet); | |
774 | ||
775 | if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) { | |
776 | /* Terminate session */ | |
777 | devc->dev_state = STOPPING; | |
778 | } else { | |
779 | devc->dev_state = NEW_CAPTURE; | |
780 | } | |
781 | } | |
782 | } | |
783 | ||
784 | static int handle_event(int fd, int revents, void *cb_data) | |
785 | { | |
786 | const struct sr_dev_inst *sdi; | |
787 | struct sr_datafeed_packet packet; | |
788 | struct timeval tv; | |
789 | struct sr_dev_driver *di; | |
790 | struct dev_context *devc; | |
791 | struct drv_context *drvc; | |
792 | int num_channels; | |
793 | uint32_t trigger_offset; | |
794 | uint8_t capturestate; | |
795 | ||
796 | (void)fd; | |
797 | (void)revents; | |
798 | ||
799 | sdi = cb_data; | |
800 | di = sdi->driver; | |
801 | drvc = di->context; | |
802 | devc = sdi->priv; | |
803 | if (devc->dev_state == STOPPING) { | |
804 | /* We've been told to wind up the acquisition. */ | |
805 | sr_dbg("Stopping acquisition."); | |
806 | /* | |
807 | * TODO: Doesn't really cancel pending transfers so they might | |
808 | * come in after SR_DF_END is sent. | |
809 | */ | |
810 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
811 | ||
812 | std_session_send_df_end(sdi); | |
813 | ||
814 | devc->dev_state = IDLE; | |
815 | ||
816 | return TRUE; | |
817 | } | |
818 | ||
819 | /* Always handle pending libusb events. */ | |
820 | tv.tv_sec = tv.tv_usec = 0; | |
821 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
822 | ||
823 | /* TODO: ugh */ | |
824 | if (devc->dev_state == NEW_CAPTURE) { | |
825 | if (dso_capture_start(sdi) != SR_OK) | |
826 | return TRUE; | |
827 | if (dso_enable_trigger(sdi) != SR_OK) | |
828 | return TRUE; | |
829 | // if (dso_force_trigger(sdi) != SR_OK) | |
830 | // return TRUE; | |
831 | sr_dbg("Successfully requested next chunk."); | |
832 | devc->dev_state = CAPTURE; | |
833 | return TRUE; | |
834 | } | |
835 | if (devc->dev_state != CAPTURE) | |
836 | return TRUE; | |
837 | ||
838 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
839 | return TRUE; | |
840 | ||
841 | sr_dbg("Capturestate %d.", capturestate); | |
842 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
843 | switch (capturestate) { | |
844 | case CAPTURE_EMPTY: | |
845 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
846 | devc->capture_empty_count = 0; | |
847 | if (dso_capture_start(sdi) != SR_OK) | |
848 | break; | |
849 | if (dso_enable_trigger(sdi) != SR_OK) | |
850 | break; | |
851 | // if (dso_force_trigger(sdi) != SR_OK) | |
852 | // break; | |
853 | sr_dbg("Successfully requested next chunk."); | |
854 | } | |
855 | break; | |
856 | case CAPTURE_FILLING: | |
857 | /* No data yet. */ | |
858 | break; | |
859 | case CAPTURE_READY_8BIT: | |
860 | case CAPTURE_READY2250: | |
861 | /* Remember where in the captured frame the trigger is. */ | |
862 | devc->trigger_offset = trigger_offset; | |
863 | ||
864 | num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1; | |
865 | devc->framebuf = g_malloc(devc->framesize * num_channels * 2); | |
866 | devc->samp_buffered = devc->samp_received = 0; | |
867 | ||
868 | /* Tell the scope to send us the first frame. */ | |
869 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
870 | break; | |
871 | ||
872 | /* | |
873 | * Don't hit the state machine again until we're done fetching | |
874 | * the data we just told the scope to send. | |
875 | */ | |
876 | devc->dev_state = FETCH_DATA; | |
877 | ||
878 | /* Tell the frontend a new frame is on the way. */ | |
879 | packet.type = SR_DF_FRAME_BEGIN; | |
880 | sr_session_send(sdi, &packet); | |
881 | break; | |
882 | case CAPTURE_READY_9BIT: | |
883 | /* TODO */ | |
884 | sr_err("Not yet supported."); | |
885 | break; | |
886 | case CAPTURE_TIMEOUT: | |
887 | /* Doesn't matter, we'll try again next time. */ | |
888 | break; | |
889 | default: | |
890 | sr_dbg("Unknown capture state: %d.", capturestate); | |
891 | break; | |
892 | } | |
893 | ||
894 | return TRUE; | |
895 | } | |
896 | ||
897 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
898 | { | |
899 | struct dev_context *devc; | |
900 | struct sr_dev_driver *di = sdi->driver; | |
901 | struct drv_context *drvc = di->context; | |
902 | ||
903 | devc = sdi->priv; | |
904 | ||
905 | if (configure_channels(sdi) != SR_OK) { | |
906 | sr_err("Failed to configure channels."); | |
907 | return SR_ERR; | |
908 | } | |
909 | ||
910 | if (dso_init(sdi) != SR_OK) | |
911 | return SR_ERR; | |
912 | ||
913 | if (dso_capture_start(sdi) != SR_OK) | |
914 | return SR_ERR; | |
915 | ||
916 | devc->dev_state = CAPTURE; | |
917 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi); | |
918 | ||
919 | std_session_send_df_header(sdi); | |
920 | ||
921 | return SR_OK; | |
922 | } | |
923 | ||
924 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
925 | { | |
926 | struct dev_context *devc; | |
927 | ||
928 | devc = sdi->priv; | |
929 | devc->dev_state = STOPPING; | |
930 | ||
931 | return SR_OK; | |
932 | } | |
933 | ||
934 | static struct sr_dev_driver hantek_dso_driver_info = { | |
935 | .name = "hantek-dso", | |
936 | .longname = "Hantek DSO", | |
937 | .api_version = 1, | |
938 | .init = std_init, | |
939 | .cleanup = std_cleanup, | |
940 | .scan = scan, | |
941 | .dev_list = std_dev_list, | |
942 | .dev_clear = dev_clear, | |
943 | .config_get = config_get, | |
944 | .config_set = config_set, | |
945 | .config_list = config_list, | |
946 | .dev_open = dev_open, | |
947 | .dev_close = dev_close, | |
948 | .dev_acquisition_start = dev_acquisition_start, | |
949 | .dev_acquisition_stop = dev_acquisition_stop, | |
950 | .context = NULL, | |
951 | }; | |
952 | SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info); |