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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 | SR_CONF_TRIGGER_LEVEL | SR_CONF_GET | SR_CONF_SET, | |
68 | }; | |
69 | ||
70 | static const uint32_t devopts_cg[] = { | |
71 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
72 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
73 | SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
74 | }; | |
75 | ||
76 | static const char *channel_names[] = { | |
77 | "CH1", "CH2", | |
78 | }; | |
79 | ||
80 | static const uint64_t buffersizes_32k[] = { | |
81 | (10 * 1024), (32 * 1024), | |
82 | }; | |
83 | static const uint64_t buffersizes_512k[] = { | |
84 | (10 * 1024), (512 * 1024), | |
85 | }; | |
86 | static const uint64_t buffersizes_14k[] = { | |
87 | (10 * 1024), (14 * 1024), | |
88 | }; | |
89 | ||
90 | static const struct dso_profile dev_profiles[] = { | |
91 | { 0x04b4, 0x2090, 0x04b5, 0x2090, | |
92 | "Hantek", "DSO-2090", | |
93 | buffersizes_32k, | |
94 | "hantek-dso-2090.fw" }, | |
95 | { 0x04b4, 0x2150, 0x04b5, 0x2150, | |
96 | "Hantek", "DSO-2150", | |
97 | buffersizes_32k, | |
98 | "hantek-dso-2150.fw" }, | |
99 | { 0x04b4, 0x2250, 0x04b5, 0x2250, | |
100 | "Hantek", "DSO-2250", | |
101 | buffersizes_512k, | |
102 | "hantek-dso-2250.fw" }, | |
103 | { 0x04b4, 0x5200, 0x04b5, 0x5200, | |
104 | "Hantek", "DSO-5200", | |
105 | buffersizes_14k, | |
106 | "hantek-dso-5200.fw" }, | |
107 | { 0x04b4, 0x520a, 0x04b5, 0x520a, | |
108 | "Hantek", "DSO-5200A", | |
109 | buffersizes_512k, | |
110 | "hantek-dso-5200A.fw" }, | |
111 | ALL_ZERO | |
112 | }; | |
113 | ||
114 | static const uint64_t timebases[][2] = { | |
115 | /* microseconds */ | |
116 | { 10, 1000000 }, | |
117 | { 20, 1000000 }, | |
118 | { 40, 1000000 }, | |
119 | { 100, 1000000 }, | |
120 | { 200, 1000000 }, | |
121 | { 400, 1000000 }, | |
122 | /* milliseconds */ | |
123 | { 1, 1000 }, | |
124 | { 2, 1000 }, | |
125 | { 4, 1000 }, | |
126 | { 10, 1000 }, | |
127 | { 20, 1000 }, | |
128 | { 40, 1000 }, | |
129 | { 100, 1000 }, | |
130 | { 200, 1000 }, | |
131 | { 400, 1000 }, | |
132 | }; | |
133 | ||
134 | static const uint64_t samplerates[] = { | |
135 | SR_KHZ(20), | |
136 | SR_KHZ(25), | |
137 | SR_KHZ(50), | |
138 | SR_KHZ(100), | |
139 | SR_KHZ(200), | |
140 | SR_KHZ(250), | |
141 | SR_KHZ(500), | |
142 | SR_MHZ(1), | |
143 | SR_MHZ(2), | |
144 | SR_MHZ(5), | |
145 | SR_MHZ(10), | |
146 | SR_MHZ(20), | |
147 | SR_MHZ(25), | |
148 | SR_MHZ(50), | |
149 | SR_MHZ(100), | |
150 | SR_MHZ(125), | |
151 | /* fast mode not supported yet | |
152 | SR_MHZ(200), | |
153 | SR_MHZ(250), */ | |
154 | }; | |
155 | ||
156 | static const uint64_t vdivs[][2] = { | |
157 | /* millivolts */ | |
158 | { 10, 1000 }, | |
159 | { 20, 1000 }, | |
160 | { 50, 1000 }, | |
161 | { 100, 1000 }, | |
162 | { 200, 1000 }, | |
163 | { 500, 1000 }, | |
164 | /* volts */ | |
165 | { 1, 1 }, | |
166 | { 2, 1 }, | |
167 | { 5, 1 }, | |
168 | }; | |
169 | ||
170 | static const char *trigger_sources[] = { | |
171 | "CH1", "CH2", "EXT", | |
172 | /* TODO: forced */ | |
173 | }; | |
174 | ||
175 | static const char *trigger_slopes[] = { | |
176 | "r", "f", | |
177 | }; | |
178 | ||
179 | static const char *coupling[] = { | |
180 | "AC", "DC", "GND", | |
181 | }; | |
182 | ||
183 | static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof) | |
184 | { | |
185 | struct sr_dev_inst *sdi; | |
186 | struct sr_channel *ch; | |
187 | struct sr_channel_group *cg; | |
188 | struct dev_context *devc; | |
189 | unsigned int i; | |
190 | ||
191 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
192 | sdi->status = SR_ST_INITIALIZING; | |
193 | sdi->vendor = g_strdup(prof->vendor); | |
194 | sdi->model = g_strdup(prof->model); | |
195 | ||
196 | /* | |
197 | * Add only the real channels -- EXT isn't a source of data, only | |
198 | * a trigger source internal to the device. | |
199 | */ | |
200 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
201 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
202 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
203 | cg->name = g_strdup(channel_names[i]); | |
204 | cg->channels = g_slist_append(cg->channels, ch); | |
205 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
206 | } | |
207 | ||
208 | devc = g_malloc0(sizeof(struct dev_context)); | |
209 | devc->profile = prof; | |
210 | devc->dev_state = IDLE; | |
211 | devc->timebase = DEFAULT_TIMEBASE; | |
212 | devc->samplerate = DEFAULT_SAMPLERATE; | |
213 | devc->ch_enabled[0] = TRUE; | |
214 | devc->ch_enabled[1] = TRUE; | |
215 | devc->voltage[0] = DEFAULT_VOLTAGE; | |
216 | devc->voltage[1] = DEFAULT_VOLTAGE; | |
217 | devc->coupling[0] = DEFAULT_COUPLING; | |
218 | devc->coupling[1] = DEFAULT_COUPLING; | |
219 | devc->voffset_ch1 = DEFAULT_VERT_OFFSET; | |
220 | devc->voffset_ch2 = DEFAULT_VERT_OFFSET; | |
221 | devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS; | |
222 | devc->framesize = DEFAULT_FRAMESIZE; | |
223 | devc->triggerslope = SLOPE_POSITIVE; | |
224 | devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE); | |
225 | devc->capture_ratio = DEFAULT_CAPTURE_RATIO; | |
226 | sdi->priv = devc; | |
227 | ||
228 | return sdi; | |
229 | } | |
230 | ||
231 | static int configure_channels(const struct sr_dev_inst *sdi) | |
232 | { | |
233 | struct dev_context *devc; | |
234 | struct sr_channel *ch; | |
235 | const GSList *l; | |
236 | int p; | |
237 | ||
238 | devc = sdi->priv; | |
239 | ||
240 | g_slist_free(devc->enabled_channels); | |
241 | devc->enabled_channels = NULL; | |
242 | devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE; | |
243 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
244 | ch = l->data; | |
245 | if (p == 0) | |
246 | devc->ch_enabled[0] = ch->enabled; | |
247 | else | |
248 | devc->ch_enabled[1] = ch->enabled; | |
249 | if (ch->enabled) | |
250 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
251 | } | |
252 | ||
253 | return SR_OK; | |
254 | } | |
255 | ||
256 | static void clear_helper(struct dev_context *devc) | |
257 | { | |
258 | g_free(devc->triggersource); | |
259 | g_slist_free(devc->enabled_channels); | |
260 | } | |
261 | ||
262 | static int dev_clear(const struct sr_dev_driver *di) | |
263 | { | |
264 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
265 | } | |
266 | ||
267 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
268 | { | |
269 | struct drv_context *drvc; | |
270 | struct dev_context *devc; | |
271 | struct sr_dev_inst *sdi; | |
272 | struct sr_usb_dev_inst *usb; | |
273 | struct sr_config *src; | |
274 | const struct dso_profile *prof; | |
275 | GSList *l, *devices, *conn_devices; | |
276 | struct libusb_device_descriptor des; | |
277 | libusb_device **devlist; | |
278 | int i, j; | |
279 | const char *conn; | |
280 | char connection_id[64]; | |
281 | ||
282 | drvc = di->context; | |
283 | ||
284 | devices = 0; | |
285 | ||
286 | conn = NULL; | |
287 | for (l = options; l; l = l->next) { | |
288 | src = l->data; | |
289 | if (src->key == SR_CONF_CONN) { | |
290 | conn = g_variant_get_string(src->data, NULL); | |
291 | break; | |
292 | } | |
293 | } | |
294 | if (conn) | |
295 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
296 | else | |
297 | conn_devices = NULL; | |
298 | ||
299 | /* Find all Hantek DSO devices and upload firmware to all of them. */ | |
300 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
301 | for (i = 0; devlist[i]; i++) { | |
302 | if (conn) { | |
303 | usb = NULL; | |
304 | for (l = conn_devices; l; l = l->next) { | |
305 | usb = l->data; | |
306 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
307 | && usb->address == libusb_get_device_address(devlist[i])) | |
308 | break; | |
309 | } | |
310 | if (!l) | |
311 | /* This device matched none of the ones that | |
312 | * matched the conn specification. */ | |
313 | continue; | |
314 | } | |
315 | ||
316 | libusb_get_device_descriptor(devlist[i], &des); | |
317 | ||
318 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
319 | ||
320 | prof = NULL; | |
321 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
322 | if (des.idVendor == dev_profiles[j].orig_vid | |
323 | && des.idProduct == dev_profiles[j].orig_pid) { | |
324 | /* Device matches the pre-firmware profile. */ | |
325 | prof = &dev_profiles[j]; | |
326 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
327 | sdi = dso_dev_new(prof); | |
328 | sdi->connection_id = g_strdup(connection_id); | |
329 | devices = g_slist_append(devices, sdi); | |
330 | devc = sdi->priv; | |
331 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
332 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
333 | /* Remember when the firmware on this device was updated */ | |
334 | devc->fw_updated = g_get_monotonic_time(); | |
335 | else | |
336 | sr_err("Firmware upload failed"); | |
337 | /* Dummy USB address of 0xff will get overwritten later. */ | |
338 | sdi->conn = sr_usb_dev_inst_new( | |
339 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
340 | break; | |
341 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
342 | && des.idProduct == dev_profiles[j].fw_pid) { | |
343 | /* Device matches the post-firmware profile. */ | |
344 | prof = &dev_profiles[j]; | |
345 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
346 | sdi = dso_dev_new(prof); | |
347 | sdi->connection_id = g_strdup(connection_id); | |
348 | sdi->status = SR_ST_INACTIVE; | |
349 | devices = g_slist_append(devices, sdi); | |
350 | sdi->inst_type = SR_INST_USB; | |
351 | sdi->conn = sr_usb_dev_inst_new( | |
352 | libusb_get_bus_number(devlist[i]), | |
353 | libusb_get_device_address(devlist[i]), NULL); | |
354 | break; | |
355 | } | |
356 | } | |
357 | if (!prof) | |
358 | /* not a supported VID/PID */ | |
359 | continue; | |
360 | } | |
361 | libusb_free_device_list(devlist, 1); | |
362 | ||
363 | return std_scan_complete(di, devices); | |
364 | } | |
365 | ||
366 | static int dev_open(struct sr_dev_inst *sdi) | |
367 | { | |
368 | struct dev_context *devc; | |
369 | struct sr_usb_dev_inst *usb; | |
370 | int64_t timediff_us, timediff_ms; | |
371 | int err; | |
372 | ||
373 | devc = sdi->priv; | |
374 | usb = sdi->conn; | |
375 | ||
376 | /* | |
377 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
378 | * for the FX2 to renumerate. | |
379 | */ | |
380 | err = SR_ERR; | |
381 | if (devc->fw_updated > 0) { | |
382 | sr_info("Waiting for device to reset."); | |
383 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
384 | g_usleep(300 * 1000); | |
385 | timediff_ms = 0; | |
386 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
387 | if ((err = dso_open(sdi)) == SR_OK) | |
388 | break; | |
389 | g_usleep(100 * 1000); | |
390 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
391 | timediff_ms = timediff_us / 1000; | |
392 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
393 | } | |
394 | sr_info("Device came back after %" PRIi64 " ms.", timediff_ms); | |
395 | } else { | |
396 | err = dso_open(sdi); | |
397 | } | |
398 | ||
399 | if (err != SR_OK) { | |
400 | sr_err("Unable to open device."); | |
401 | return SR_ERR; | |
402 | } | |
403 | ||
404 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
405 | if (err != 0) { | |
406 | sr_err("Unable to claim interface: %s.", | |
407 | libusb_error_name(err)); | |
408 | return SR_ERR; | |
409 | } | |
410 | ||
411 | return SR_OK; | |
412 | } | |
413 | ||
414 | static int dev_close(struct sr_dev_inst *sdi) | |
415 | { | |
416 | dso_close(sdi); | |
417 | ||
418 | return SR_OK; | |
419 | } | |
420 | ||
421 | static int config_get(uint32_t key, GVariant **data, | |
422 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
423 | { | |
424 | struct dev_context *devc; | |
425 | struct sr_usb_dev_inst *usb; | |
426 | const char *s; | |
427 | const uint64_t *vdiv; | |
428 | int ch_idx; | |
429 | ||
430 | switch (key) { | |
431 | case SR_CONF_NUM_HDIV: | |
432 | *data = g_variant_new_int32(NUM_TIMEBASE); | |
433 | break; | |
434 | case SR_CONF_NUM_VDIV: | |
435 | *data = g_variant_new_int32(NUM_VDIV); | |
436 | break; | |
437 | } | |
438 | ||
439 | if (!sdi) | |
440 | return SR_ERR_ARG; | |
441 | ||
442 | devc = sdi->priv; | |
443 | if (!cg) { | |
444 | switch (key) { | |
445 | case SR_CONF_TRIGGER_LEVEL: | |
446 | *data = g_variant_new_double(devc->voffset_trigger); | |
447 | break; | |
448 | case SR_CONF_CONN: | |
449 | if (!sdi->conn) | |
450 | return SR_ERR_ARG; | |
451 | usb = sdi->conn; | |
452 | if (usb->address == 255) | |
453 | /* Device still needs to re-enumerate after firmware | |
454 | * upload, so we don't know its (future) address. */ | |
455 | return SR_ERR; | |
456 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); | |
457 | break; | |
458 | case SR_CONF_TIMEBASE: | |
459 | *data = g_variant_new("(tt)", timebases[devc->timebase][0], | |
460 | timebases[devc->timebase][1]); | |
461 | break; | |
462 | case SR_CONF_SAMPLERATE: | |
463 | *data = g_variant_new_uint64(devc->samplerate); | |
464 | break; | |
465 | case SR_CONF_BUFFERSIZE: | |
466 | *data = g_variant_new_uint64(devc->framesize); | |
467 | break; | |
468 | case SR_CONF_TRIGGER_SOURCE: | |
469 | *data = g_variant_new_string(devc->triggersource); | |
470 | break; | |
471 | case SR_CONF_TRIGGER_SLOPE: | |
472 | s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f"; | |
473 | *data = g_variant_new_string(s); | |
474 | break; | |
475 | case SR_CONF_CAPTURE_RATIO: | |
476 | *data = g_variant_new_uint64(devc->capture_ratio); | |
477 | break; | |
478 | default: | |
479 | return SR_ERR_NA; | |
480 | } | |
481 | } else { | |
482 | if (sdi->channel_groups->data == cg) | |
483 | ch_idx = 0; | |
484 | else if (sdi->channel_groups->next->data == cg) | |
485 | ch_idx = 1; | |
486 | else | |
487 | return SR_ERR_ARG; | |
488 | switch (key) { | |
489 | case SR_CONF_FILTER: | |
490 | *data = g_variant_new_boolean(devc->filter[ch_idx]); | |
491 | break; | |
492 | case SR_CONF_VDIV: | |
493 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
494 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
495 | break; | |
496 | case SR_CONF_COUPLING: | |
497 | *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]); | |
498 | break; | |
499 | } | |
500 | } | |
501 | ||
502 | return SR_OK; | |
503 | } | |
504 | ||
505 | static int config_set(uint32_t key, GVariant *data, | |
506 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
507 | { | |
508 | struct dev_context *devc; | |
509 | int rat; | |
510 | int ch_idx, idx; | |
511 | float flt; | |
512 | ||
513 | devc = sdi->priv; | |
514 | if (!cg) { | |
515 | switch (key) { | |
516 | case SR_CONF_LIMIT_FRAMES: | |
517 | devc->limit_frames = g_variant_get_uint64(data); | |
518 | break; | |
519 | case SR_CONF_TRIGGER_LEVEL: | |
520 | flt = g_variant_get_double(data); | |
521 | if (flt < 0.0 || flt > 1.0) { | |
522 | sr_err("Trigger level must be in [0.0,1.0]."); | |
523 | return SR_ERR_ARG; | |
524 | } | |
525 | ||
526 | devc->voffset_trigger = flt; | |
527 | if (dso_set_voffsets(sdi) != SR_OK) { | |
528 | return SR_ERR; | |
529 | } | |
530 | break; | |
531 | case SR_CONF_TRIGGER_SLOPE: | |
532 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0) | |
533 | return SR_ERR_ARG; | |
534 | devc->triggerslope = idx; | |
535 | break; | |
536 | case SR_CONF_CAPTURE_RATIO: | |
537 | rat = g_variant_get_uint64(data); | |
538 | if (rat < 0 || rat > 100) { | |
539 | sr_err("Capture ratio must be in [0,100]."); | |
540 | return SR_ERR_ARG; | |
541 | } else | |
542 | devc->capture_ratio = rat; | |
543 | break; | |
544 | case SR_CONF_BUFFERSIZE: | |
545 | if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0) | |
546 | return SR_ERR_ARG; | |
547 | devc->framesize = devc->profile->buffersizes[idx]; | |
548 | break; | |
549 | case SR_CONF_TIMEBASE: | |
550 | if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0) | |
551 | return SR_ERR_ARG; | |
552 | devc->timebase = idx; | |
553 | break; | |
554 | case SR_CONF_SAMPLERATE: | |
555 | if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0) | |
556 | return SR_ERR_ARG; | |
557 | devc->samplerate = samplerates[idx]; | |
558 | if (dso_set_trigger_samplerate(sdi) != SR_OK) | |
559 | return SR_ERR; | |
560 | sr_dbg("got new sample rate %d, idx %d", devc->samplerate, idx); | |
561 | break; | |
562 | case SR_CONF_TRIGGER_SOURCE: | |
563 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0) | |
564 | return SR_ERR_ARG; | |
565 | devc->triggersource = g_strdup(trigger_sources[idx]); | |
566 | break; | |
567 | default: | |
568 | return SR_ERR_NA; | |
569 | } | |
570 | } else { | |
571 | if (sdi->channel_groups->data == cg) | |
572 | ch_idx = 0; | |
573 | else if (sdi->channel_groups->next->data == cg) | |
574 | ch_idx = 1; | |
575 | else | |
576 | return SR_ERR_ARG; | |
577 | switch (key) { | |
578 | case SR_CONF_FILTER: | |
579 | devc->filter[ch_idx] = g_variant_get_boolean(data); | |
580 | break; | |
581 | case SR_CONF_VDIV: | |
582 | if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0) | |
583 | return SR_ERR_ARG; | |
584 | devc->voltage[ch_idx] = idx; | |
585 | break; | |
586 | case SR_CONF_COUPLING: | |
587 | if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0) | |
588 | return SR_ERR_ARG; | |
589 | devc->coupling[ch_idx] = idx; | |
590 | break; | |
591 | default: | |
592 | return SR_ERR_NA; | |
593 | } | |
594 | } | |
595 | ||
596 | return SR_OK; | |
597 | } | |
598 | ||
599 | static int config_list(uint32_t key, GVariant **data, | |
600 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
601 | { | |
602 | struct dev_context *devc; | |
603 | ||
604 | if (!cg) { | |
605 | switch (key) { | |
606 | case SR_CONF_SCAN_OPTIONS: | |
607 | case SR_CONF_DEVICE_OPTIONS: | |
608 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
609 | case SR_CONF_BUFFERSIZE: | |
610 | if (!sdi) | |
611 | return SR_ERR_ARG; | |
612 | devc = sdi->priv; | |
613 | *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES); | |
614 | break; | |
615 | case SR_CONF_SAMPLERATE: | |
616 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates)); | |
617 | break; | |
618 | case SR_CONF_TIMEBASE: | |
619 | *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases)); | |
620 | break; | |
621 | case SR_CONF_TRIGGER_SOURCE: | |
622 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources)); | |
623 | break; | |
624 | case SR_CONF_TRIGGER_SLOPE: | |
625 | *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes)); | |
626 | break; | |
627 | default: | |
628 | return SR_ERR_NA; | |
629 | } | |
630 | } else { | |
631 | switch (key) { | |
632 | case SR_CONF_DEVICE_OPTIONS: | |
633 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg)); | |
634 | break; | |
635 | case SR_CONF_COUPLING: | |
636 | *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling)); | |
637 | break; | |
638 | case SR_CONF_VDIV: | |
639 | *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs)); | |
640 | break; | |
641 | default: | |
642 | return SR_ERR_NA; | |
643 | } | |
644 | } | |
645 | ||
646 | return SR_OK; | |
647 | } | |
648 | ||
649 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
650 | int num_samples) | |
651 | { | |
652 | struct sr_datafeed_packet packet; | |
653 | struct sr_datafeed_analog analog; | |
654 | struct sr_analog_encoding encoding; | |
655 | struct sr_analog_meaning meaning; | |
656 | struct sr_analog_spec spec; | |
657 | struct dev_context *devc = sdi->priv; | |
658 | GSList *channels = devc->enabled_channels; | |
659 | ||
660 | packet.type = SR_DF_ANALOG; | |
661 | packet.payload = &analog; | |
662 | /* TODO: support for 5xxx series 9-bit samples */ | |
663 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
664 | analog.num_samples = num_samples; | |
665 | analog.meaning->mq = SR_MQ_VOLTAGE; | |
666 | analog.meaning->unit = SR_UNIT_VOLT; | |
667 | analog.meaning->mqflags = 0; | |
668 | /* TODO: Check malloc return value. */ | |
669 | analog.data = g_try_malloc(num_samples * sizeof(float)); | |
670 | ||
671 | for (int ch = 0; ch < NUM_CHANNELS; ch++) { | |
672 | if (!devc->ch_enabled[ch]) | |
673 | continue; | |
674 | ||
675 | float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8; | |
676 | float vdivlog = log10f(range / 255); | |
677 | int digits = -(int)vdivlog + (vdivlog < 0.0); | |
678 | analog.encoding->digits = digits; | |
679 | analog.spec->spec_digits = digits; | |
680 | analog.meaning->channels = g_slist_append(NULL, channels->data); | |
681 | ||
682 | for (int i = 0; i < num_samples; i++) { | |
683 | /* | |
684 | * The device always sends data for both channels. If a channel | |
685 | * is disabled, it contains a copy of the enabled channel's | |
686 | * data. However, we only send the requested channels to | |
687 | * the bus. | |
688 | * | |
689 | * Voltage values are encoded as a value 0-255 (0-512 on the | |
690 | * DSO-5200*), where the value is a point in the range | |
691 | * represented by the vdiv setting. There are 8 vertical divs, | |
692 | * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V | |
693 | * and 255 = +2V. | |
694 | */ | |
695 | /* TODO: Support for DSO-5xxx series 9-bit samples. */ | |
696 | ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2; | |
697 | } | |
698 | sr_session_send(sdi, &packet); | |
699 | g_slist_free(analog.meaning->channels); | |
700 | ||
701 | channels = channels->next; | |
702 | } | |
703 | g_free(analog.data); | |
704 | } | |
705 | ||
706 | /* | |
707 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
708 | * Only channel data comes in asynchronously, and all transfers for this are | |
709 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
710 | * the libsigrok session bus. | |
711 | */ | |
712 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
713 | { | |
714 | struct sr_datafeed_packet packet; | |
715 | struct sr_dev_inst *sdi; | |
716 | struct dev_context *devc; | |
717 | int num_samples, pre; | |
718 | ||
719 | sdi = transfer->user_data; | |
720 | devc = sdi->priv; | |
721 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
722 | libusb_error_name(transfer->status), transfer->actual_length); | |
723 | ||
724 | if (transfer->actual_length == 0) | |
725 | /* Nothing to send to the bus. */ | |
726 | return; | |
727 | ||
728 | num_samples = transfer->actual_length / 2; | |
729 | ||
730 | sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1, | |
731 | devc->samp_received + num_samples, devc->framesize); | |
732 | ||
733 | /* | |
734 | * The device always sends a full frame, but the beginning of the frame | |
735 | * doesn't represent the trigger point. The offset at which the trigger | |
736 | * happened came in with the capture state, so we need to start sending | |
737 | * from there up the session bus. The samples in the frame buffer | |
738 | * before that trigger point came after the end of the device's frame | |
739 | * buffer was reached, and it wrapped around to overwrite up until the | |
740 | * trigger point. | |
741 | */ | |
742 | if (devc->samp_received < devc->trigger_offset) { | |
743 | /* Trigger point not yet reached. */ | |
744 | if (devc->samp_received + num_samples < devc->trigger_offset) { | |
745 | /* The entire chunk is before the trigger point. */ | |
746 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
747 | transfer->buffer, num_samples * 2); | |
748 | devc->samp_buffered += num_samples; | |
749 | } else { | |
750 | /* | |
751 | * This chunk hits or overruns the trigger point. | |
752 | * Store the part before the trigger fired, and | |
753 | * send the rest up to the session bus. | |
754 | */ | |
755 | pre = devc->trigger_offset - devc->samp_received; | |
756 | memcpy(devc->framebuf + devc->samp_buffered * 2, | |
757 | transfer->buffer, pre * 2); | |
758 | devc->samp_buffered += pre; | |
759 | ||
760 | /* The rest of this chunk starts with the trigger point. */ | |
761 | sr_dbg("Reached trigger point, %d samples buffered.", | |
762 | devc->samp_buffered); | |
763 | ||
764 | /* Avoid the corner case where the chunk ended at | |
765 | * exactly the trigger point. */ | |
766 | if (num_samples > pre) | |
767 | send_chunk(sdi, transfer->buffer + pre * 2, | |
768 | num_samples - pre); | |
769 | } | |
770 | } else { | |
771 | /* Already past the trigger point, just send it all out. */ | |
772 | send_chunk(sdi, transfer->buffer, num_samples); | |
773 | } | |
774 | ||
775 | devc->samp_received += num_samples; | |
776 | ||
777 | /* Everything in this transfer was either copied to the buffer or | |
778 | * sent to the session bus. */ | |
779 | g_free(transfer->buffer); | |
780 | libusb_free_transfer(transfer); | |
781 | ||
782 | if (devc->samp_received >= devc->framesize) { | |
783 | /* That was the last chunk in this frame. Send the buffered | |
784 | * pre-trigger samples out now, in one big chunk. */ | |
785 | sr_dbg("End of frame, sending %d pre-trigger buffered samples.", | |
786 | devc->samp_buffered); | |
787 | send_chunk(sdi, devc->framebuf, devc->samp_buffered); | |
788 | g_free(devc->framebuf); | |
789 | devc->framebuf = NULL; | |
790 | ||
791 | /* Mark the end of this frame. */ | |
792 | packet.type = SR_DF_FRAME_END; | |
793 | sr_session_send(sdi, &packet); | |
794 | ||
795 | if (devc->limit_frames && ++devc->num_frames >= devc->limit_frames) { | |
796 | /* Terminate session */ | |
797 | devc->dev_state = STOPPING; | |
798 | } else { | |
799 | devc->dev_state = NEW_CAPTURE; | |
800 | } | |
801 | } | |
802 | } | |
803 | ||
804 | static int handle_event(int fd, int revents, void *cb_data) | |
805 | { | |
806 | const struct sr_dev_inst *sdi; | |
807 | struct sr_datafeed_packet packet; | |
808 | struct timeval tv; | |
809 | struct sr_dev_driver *di; | |
810 | struct dev_context *devc; | |
811 | struct drv_context *drvc; | |
812 | int num_channels; | |
813 | uint32_t trigger_offset; | |
814 | uint8_t capturestate; | |
815 | ||
816 | (void)fd; | |
817 | (void)revents; | |
818 | ||
819 | sdi = cb_data; | |
820 | di = sdi->driver; | |
821 | drvc = di->context; | |
822 | devc = sdi->priv; | |
823 | if (devc->dev_state == STOPPING) { | |
824 | /* We've been told to wind up the acquisition. */ | |
825 | sr_dbg("Stopping acquisition."); | |
826 | /* | |
827 | * TODO: Doesn't really cancel pending transfers so they might | |
828 | * come in after SR_DF_END is sent. | |
829 | */ | |
830 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
831 | ||
832 | std_session_send_df_end(sdi); | |
833 | ||
834 | devc->dev_state = IDLE; | |
835 | ||
836 | return TRUE; | |
837 | } | |
838 | ||
839 | /* Always handle pending libusb events. */ | |
840 | tv.tv_sec = tv.tv_usec = 0; | |
841 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
842 | ||
843 | /* TODO: ugh */ | |
844 | if (devc->dev_state == NEW_CAPTURE) { | |
845 | if (dso_capture_start(sdi) != SR_OK) | |
846 | return TRUE; | |
847 | if (dso_enable_trigger(sdi) != SR_OK) | |
848 | return TRUE; | |
849 | // if (dso_force_trigger(sdi) != SR_OK) | |
850 | // return TRUE; | |
851 | sr_dbg("Successfully requested next chunk."); | |
852 | devc->dev_state = CAPTURE; | |
853 | return TRUE; | |
854 | } | |
855 | if (devc->dev_state != CAPTURE) | |
856 | return TRUE; | |
857 | ||
858 | if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK) | |
859 | return TRUE; | |
860 | ||
861 | sr_dbg("Capturestate %d.", capturestate); | |
862 | sr_dbg("Trigger offset 0x%.6x.", trigger_offset); | |
863 | switch (capturestate) { | |
864 | case CAPTURE_EMPTY: | |
865 | if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) { | |
866 | devc->capture_empty_count = 0; | |
867 | if (dso_capture_start(sdi) != SR_OK) | |
868 | break; | |
869 | if (dso_enable_trigger(sdi) != SR_OK) | |
870 | break; | |
871 | // if (dso_force_trigger(sdi) != SR_OK) | |
872 | // break; | |
873 | sr_dbg("Successfully requested next chunk."); | |
874 | } | |
875 | break; | |
876 | case CAPTURE_FILLING: | |
877 | /* No data yet. */ | |
878 | break; | |
879 | case CAPTURE_READY_8BIT: | |
880 | case CAPTURE_READY2250: | |
881 | /* Remember where in the captured frame the trigger is. */ | |
882 | devc->trigger_offset = trigger_offset; | |
883 | ||
884 | num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1; | |
885 | devc->framebuf = g_malloc(devc->framesize * num_channels * 2); | |
886 | devc->samp_buffered = devc->samp_received = 0; | |
887 | ||
888 | /* Tell the scope to send us the first frame. */ | |
889 | if (dso_get_channeldata(sdi, receive_transfer) != SR_OK) | |
890 | break; | |
891 | ||
892 | /* | |
893 | * Don't hit the state machine again until we're done fetching | |
894 | * the data we just told the scope to send. | |
895 | */ | |
896 | devc->dev_state = FETCH_DATA; | |
897 | ||
898 | /* Tell the frontend a new frame is on the way. */ | |
899 | packet.type = SR_DF_FRAME_BEGIN; | |
900 | sr_session_send(sdi, &packet); | |
901 | break; | |
902 | case CAPTURE_READY_9BIT: | |
903 | /* TODO */ | |
904 | sr_err("Not yet supported."); | |
905 | break; | |
906 | case CAPTURE_TIMEOUT: | |
907 | /* Doesn't matter, we'll try again next time. */ | |
908 | break; | |
909 | default: | |
910 | sr_dbg("Unknown capture state: %d.", capturestate); | |
911 | break; | |
912 | } | |
913 | ||
914 | return TRUE; | |
915 | } | |
916 | ||
917 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
918 | { | |
919 | struct dev_context *devc; | |
920 | struct sr_dev_driver *di = sdi->driver; | |
921 | struct drv_context *drvc = di->context; | |
922 | ||
923 | devc = sdi->priv; | |
924 | ||
925 | if (configure_channels(sdi) != SR_OK) { | |
926 | sr_err("Failed to configure channels."); | |
927 | return SR_ERR; | |
928 | } | |
929 | ||
930 | if (dso_init(sdi) != SR_OK) | |
931 | return SR_ERR; | |
932 | ||
933 | if (dso_capture_start(sdi) != SR_OK) | |
934 | return SR_ERR; | |
935 | ||
936 | devc->dev_state = CAPTURE; | |
937 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi); | |
938 | ||
939 | std_session_send_df_header(sdi); | |
940 | ||
941 | return SR_OK; | |
942 | } | |
943 | ||
944 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
945 | { | |
946 | struct dev_context *devc; | |
947 | ||
948 | devc = sdi->priv; | |
949 | devc->dev_state = STOPPING; | |
950 | devc->num_frames = 0; | |
951 | ||
952 | return SR_OK; | |
953 | } | |
954 | ||
955 | static struct sr_dev_driver hantek_dso_driver_info = { | |
956 | .name = "hantek-dso", | |
957 | .longname = "Hantek DSO", | |
958 | .api_version = 1, | |
959 | .init = std_init, | |
960 | .cleanup = std_cleanup, | |
961 | .scan = scan, | |
962 | .dev_list = std_dev_list, | |
963 | .dev_clear = dev_clear, | |
964 | .config_get = config_get, | |
965 | .config_set = config_set, | |
966 | .config_list = config_list, | |
967 | .dev_open = dev_open, | |
968 | .dev_close = dev_close, | |
969 | .dev_acquisition_start = dev_acquisition_start, | |
970 | .dev_acquisition_stop = dev_acquisition_stop, | |
971 | .context = NULL, | |
972 | }; | |
973 | SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info); |