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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2015 Christer Ekholm <christerekholm@gmail.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 "protocol.h" | |
23 | ||
24 | /* Max time in ms before we want to check on USB events */ | |
25 | #define TICK 200 | |
26 | ||
27 | #define RANGE(ch) (((float)devc->vdivs[devc->voltage[ch]][0] / devc->vdivs[devc->voltage[ch]][1]) * VDIV_MULTIPLIER) | |
28 | ||
29 | static const uint32_t scanopts[] = { | |
30 | SR_CONF_CONN, | |
31 | }; | |
32 | ||
33 | static const uint32_t drvopts[] = { | |
34 | SR_CONF_OSCILLOSCOPE, | |
35 | }; | |
36 | ||
37 | static const uint32_t devopts[] = { | |
38 | SR_CONF_CONN | SR_CONF_GET, | |
39 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
40 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
41 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
42 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
43 | }; | |
44 | ||
45 | static const uint32_t devopts_cg[] = { | |
46 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
47 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
48 | }; | |
49 | ||
50 | static const char *channel_names[] = { | |
51 | "CH1", "CH2", | |
52 | }; | |
53 | ||
54 | static const char *dc_coupling[] = { | |
55 | "DC", | |
56 | }; | |
57 | ||
58 | static const char *acdc_coupling[] = { | |
59 | "AC", "DC", | |
60 | }; | |
61 | ||
62 | static const uint64_t vdivs[][2] = { | |
63 | VDIV_VALUES | |
64 | }; | |
65 | ||
66 | static const uint64_t vdivs_instrustar[][2] = { | |
67 | VDIV_VALUES_INSTRUSTAR | |
68 | }; | |
69 | ||
70 | static const uint64_t samplerates[] = { | |
71 | SAMPLERATE_VALUES | |
72 | }; | |
73 | ||
74 | static const struct hantek_6xxx_profile dev_profiles[] = { | |
75 | { | |
76 | /* Windows: "Hantek6022BE DRIVER 1": 04b4:6022 */ | |
77 | 0x04b4, 0x6022, 0x1d50, 0x608e, 0x0001, | |
78 | "Hantek", "6022BE", "fx2lafw-hantek-6022be.fw", | |
79 | ARRAY_AND_SIZE(dc_coupling), FALSE, | |
80 | ARRAY_AND_SIZE(vdivs), | |
81 | }, | |
82 | { | |
83 | /* Windows: "Hantek6022BE DRIVER 2": 04b5:6022 */ | |
84 | 0x04b5, 0x6022, 0x1d50, 0x608e, 0x0001, | |
85 | "Hantek", "6022BE", "fx2lafw-hantek-6022be.fw", | |
86 | ARRAY_AND_SIZE(dc_coupling), FALSE, | |
87 | ARRAY_AND_SIZE(vdivs), | |
88 | }, | |
89 | { | |
90 | 0x8102, 0x8102, 0x1d50, 0x608e, 0x0002, | |
91 | "Sainsmart", "DDS120", "fx2lafw-sainsmart-dds120.fw", | |
92 | ARRAY_AND_SIZE(acdc_coupling), TRUE, | |
93 | ARRAY_AND_SIZE(vdivs), | |
94 | }, | |
95 | { | |
96 | /* Windows: "Hantek6022BL DRIVER 1": 04b4:602a */ | |
97 | 0x04b4, 0x602a, 0x1d50, 0x608e, 0x0003, | |
98 | "Hantek", "6022BL", "fx2lafw-hantek-6022bl.fw", | |
99 | ARRAY_AND_SIZE(dc_coupling), FALSE, | |
100 | ARRAY_AND_SIZE(vdivs), | |
101 | }, | |
102 | { | |
103 | /* Windows: "Hantek6022BL DRIVER 2": 04b5:602a */ | |
104 | 0x04b5, 0x602a, 0x1d50, 0x608e, 0x0003, | |
105 | "Hantek", "6022BL", "fx2lafw-hantek-6022bl.fw", | |
106 | ARRAY_AND_SIZE(dc_coupling), FALSE, | |
107 | ARRAY_AND_SIZE(vdivs), | |
108 | }, | |
109 | { | |
110 | 0xd4a2, 0x5660, 0x1d50, 0x608e, 0x0004, | |
111 | "YiXingDianZi", "MDSO", "fx2lafw-yixingdianzi-mdso.fw", | |
112 | ARRAY_AND_SIZE(dc_coupling), FALSE, | |
113 | ARRAY_AND_SIZE(vdivs), | |
114 | }, | |
115 | { | |
116 | /*"InstrustarISDS205": d4a2:5661 */ | |
117 | 0xd4a2, 0x5661, 0x1d50, 0x608e, 0x0005, | |
118 | "Instrustar", "ISDS205B", "fx2lafw-instrustar-isds205b.fw", | |
119 | ARRAY_AND_SIZE(acdc_coupling), TRUE, | |
120 | ARRAY_AND_SIZE(vdivs_instrustar), | |
121 | }, | |
122 | ALL_ZERO | |
123 | }; | |
124 | ||
125 | ||
126 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount); | |
127 | ||
128 | static struct sr_dev_inst *hantek_6xxx_dev_new(const struct hantek_6xxx_profile *prof) | |
129 | { | |
130 | struct sr_dev_inst *sdi; | |
131 | struct sr_channel *ch; | |
132 | struct sr_channel_group *cg; | |
133 | struct dev_context *devc; | |
134 | unsigned int i; | |
135 | ||
136 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
137 | sdi->status = SR_ST_INITIALIZING; | |
138 | sdi->vendor = g_strdup(prof->vendor); | |
139 | sdi->model = g_strdup(prof->model); | |
140 | ||
141 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
142 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
143 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
144 | cg->name = g_strdup(channel_names[i]); | |
145 | cg->channels = g_slist_append(cg->channels, ch); | |
146 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
147 | } | |
148 | ||
149 | devc = g_malloc0(sizeof(struct dev_context)); | |
150 | ||
151 | for (i = 0; i < NUM_CHANNELS; i++) { | |
152 | devc->ch_enabled[i] = TRUE; | |
153 | devc->voltage[i] = DEFAULT_VOLTAGE; | |
154 | devc->coupling[i] = DEFAULT_COUPLING; | |
155 | } | |
156 | devc->coupling_vals = prof->coupling_vals; | |
157 | devc->coupling_tab_size = prof->coupling_tab_size; | |
158 | devc->has_coupling = prof->has_coupling; | |
159 | devc->vdivs = prof->vdivs; | |
160 | devc->vdivs_size = prof->vdivs_size; | |
161 | ||
162 | devc->profile = prof; | |
163 | devc->dev_state = IDLE; | |
164 | devc->samplerate = DEFAULT_SAMPLERATE; | |
165 | ||
166 | sdi->priv = devc; | |
167 | ||
168 | return sdi; | |
169 | } | |
170 | ||
171 | static int configure_channels(const struct sr_dev_inst *sdi) | |
172 | { | |
173 | struct dev_context *devc; | |
174 | const GSList *l; | |
175 | int p; | |
176 | struct sr_channel *ch; | |
177 | devc = sdi->priv; | |
178 | ||
179 | g_slist_free(devc->enabled_channels); | |
180 | devc->enabled_channels = NULL; | |
181 | memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled)); | |
182 | ||
183 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
184 | ch = l->data; | |
185 | if (p < NUM_CHANNELS) { | |
186 | devc->ch_enabled[p] = ch->enabled; | |
187 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
188 | } | |
189 | } | |
190 | ||
191 | return SR_OK; | |
192 | } | |
193 | ||
194 | static void clear_helper(struct dev_context *devc) | |
195 | { | |
196 | g_slist_free(devc->enabled_channels); | |
197 | } | |
198 | ||
199 | static int dev_clear(const struct sr_dev_driver *di) | |
200 | { | |
201 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
202 | } | |
203 | ||
204 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
205 | { | |
206 | struct drv_context *drvc; | |
207 | struct dev_context *devc; | |
208 | struct sr_dev_inst *sdi; | |
209 | struct sr_usb_dev_inst *usb; | |
210 | struct sr_config *src; | |
211 | const struct hantek_6xxx_profile *prof; | |
212 | GSList *l, *devices, *conn_devices; | |
213 | struct libusb_device_descriptor des; | |
214 | libusb_device **devlist; | |
215 | int i, j; | |
216 | const char *conn; | |
217 | char connection_id[64]; | |
218 | ||
219 | drvc = di->context; | |
220 | ||
221 | devices = 0; | |
222 | ||
223 | conn = NULL; | |
224 | for (l = options; l; l = l->next) { | |
225 | src = l->data; | |
226 | if (src->key == SR_CONF_CONN) { | |
227 | conn = g_variant_get_string(src->data, NULL); | |
228 | break; | |
229 | } | |
230 | } | |
231 | if (conn) | |
232 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
233 | else | |
234 | conn_devices = NULL; | |
235 | ||
236 | /* Find all Hantek 60xx devices and upload firmware to all of them. */ | |
237 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
238 | for (i = 0; devlist[i]; i++) { | |
239 | if (conn) { | |
240 | usb = NULL; | |
241 | for (l = conn_devices; l; l = l->next) { | |
242 | usb = l->data; | |
243 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
244 | && usb->address == libusb_get_device_address(devlist[i])) | |
245 | break; | |
246 | } | |
247 | if (!l) | |
248 | /* This device matched none of the ones that | |
249 | * matched the conn specification. */ | |
250 | continue; | |
251 | } | |
252 | ||
253 | libusb_get_device_descriptor(devlist[i], &des); | |
254 | ||
255 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) | |
256 | continue; | |
257 | ||
258 | prof = NULL; | |
259 | for (j = 0; dev_profiles[j].orig_vid; j++) { | |
260 | if (des.idVendor == dev_profiles[j].orig_vid | |
261 | && des.idProduct == dev_profiles[j].orig_pid) { | |
262 | /* Device matches the pre-firmware profile. */ | |
263 | prof = &dev_profiles[j]; | |
264 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
265 | sdi = hantek_6xxx_dev_new(prof); | |
266 | sdi->connection_id = g_strdup(connection_id); | |
267 | devices = g_slist_append(devices, sdi); | |
268 | devc = sdi->priv; | |
269 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
270 | USB_CONFIGURATION, prof->firmware) == SR_OK) { | |
271 | /* Remember when the firmware on this device was updated. */ | |
272 | devc->fw_updated = g_get_monotonic_time(); | |
273 | } else { | |
274 | sr_err("Firmware upload failed, name %s.", prof->firmware); | |
275 | } | |
276 | /* Dummy USB address of 0xff will get overwritten later. */ | |
277 | sdi->conn = sr_usb_dev_inst_new( | |
278 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
279 | break; | |
280 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
281 | && des.idProduct == dev_profiles[j].fw_pid | |
282 | && des.bcdDevice == dev_profiles[j].fw_prod_ver) { | |
283 | /* Device matches the post-firmware profile. */ | |
284 | prof = &dev_profiles[j]; | |
285 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
286 | sdi = hantek_6xxx_dev_new(prof); | |
287 | sdi->connection_id = g_strdup(connection_id); | |
288 | sdi->status = SR_ST_INACTIVE; | |
289 | devices = g_slist_append(devices, sdi); | |
290 | sdi->inst_type = SR_INST_USB; | |
291 | sdi->conn = sr_usb_dev_inst_new( | |
292 | libusb_get_bus_number(devlist[i]), | |
293 | libusb_get_device_address(devlist[i]), NULL); | |
294 | break; | |
295 | } | |
296 | } | |
297 | if (!prof) | |
298 | /* Not a supported VID/PID. */ | |
299 | continue; | |
300 | } | |
301 | libusb_free_device_list(devlist, 1); | |
302 | ||
303 | return std_scan_complete(di, devices); | |
304 | } | |
305 | ||
306 | static int dev_open(struct sr_dev_inst *sdi) | |
307 | { | |
308 | struct dev_context *devc; | |
309 | struct sr_usb_dev_inst *usb; | |
310 | int64_t timediff_us, timediff_ms; | |
311 | int err; | |
312 | ||
313 | devc = sdi->priv; | |
314 | usb = sdi->conn; | |
315 | ||
316 | /* | |
317 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
318 | * for the FX2 to renumerate. | |
319 | */ | |
320 | err = SR_ERR; | |
321 | if (devc->fw_updated > 0) { | |
322 | sr_info("Waiting for device to reset."); | |
323 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
324 | g_usleep(300 * 1000); | |
325 | timediff_ms = 0; | |
326 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
327 | if ((err = hantek_6xxx_open(sdi)) == SR_OK) | |
328 | break; | |
329 | g_usleep(100 * 1000); | |
330 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
331 | timediff_ms = timediff_us / 1000; | |
332 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
333 | } | |
334 | if (timediff_ms < MAX_RENUM_DELAY_MS) | |
335 | sr_info("Device came back after %"PRIu64" ms.", timediff_ms); | |
336 | } else { | |
337 | err = hantek_6xxx_open(sdi); | |
338 | } | |
339 | ||
340 | if (err != SR_OK) { | |
341 | sr_err("Unable to open device."); | |
342 | return SR_ERR; | |
343 | } | |
344 | ||
345 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
346 | if (err != 0) { | |
347 | sr_err("Unable to claim interface: %s.", | |
348 | libusb_error_name(err)); | |
349 | return SR_ERR; | |
350 | } | |
351 | ||
352 | return SR_OK; | |
353 | } | |
354 | ||
355 | static int dev_close(struct sr_dev_inst *sdi) | |
356 | { | |
357 | hantek_6xxx_close(sdi); | |
358 | ||
359 | return SR_OK; | |
360 | } | |
361 | ||
362 | static int config_get(uint32_t key, GVariant **data, | |
363 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
364 | { | |
365 | struct dev_context *devc; | |
366 | struct sr_usb_dev_inst *usb; | |
367 | const uint64_t *vdiv; | |
368 | int ch_idx; | |
369 | ||
370 | if (!sdi) | |
371 | return SR_ERR_ARG; | |
372 | ||
373 | devc = sdi->priv; | |
374 | ||
375 | switch (key) { | |
376 | case SR_CONF_NUM_VDIV: | |
377 | *data = g_variant_new_int32(devc->vdivs_size); | |
378 | break; | |
379 | } | |
380 | ||
381 | if (!cg) { | |
382 | switch (key) { | |
383 | case SR_CONF_SAMPLERATE: | |
384 | *data = g_variant_new_uint64(devc->samplerate); | |
385 | break; | |
386 | case SR_CONF_LIMIT_MSEC: | |
387 | *data = g_variant_new_uint64(devc->limit_msec); | |
388 | break; | |
389 | case SR_CONF_LIMIT_SAMPLES: | |
390 | *data = g_variant_new_uint64(devc->limit_samples); | |
391 | break; | |
392 | case SR_CONF_CONN: | |
393 | if (!sdi->conn) | |
394 | return SR_ERR_ARG; | |
395 | usb = sdi->conn; | |
396 | if (usb->address == 255) | |
397 | /* Device still needs to re-enumerate after firmware | |
398 | * upload, so we don't know its (future) address. */ | |
399 | return SR_ERR; | |
400 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); | |
401 | break; | |
402 | default: | |
403 | return SR_ERR_NA; | |
404 | } | |
405 | } else { | |
406 | if (sdi->channel_groups->data == cg) | |
407 | ch_idx = 0; | |
408 | else if (sdi->channel_groups->next->data == cg) | |
409 | ch_idx = 1; | |
410 | else | |
411 | return SR_ERR_ARG; | |
412 | switch (key) { | |
413 | case SR_CONF_VDIV: | |
414 | vdiv = devc->vdivs[devc->voltage[ch_idx]]; | |
415 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
416 | break; | |
417 | case SR_CONF_COUPLING: | |
418 | *data = g_variant_new_string((devc->coupling[ch_idx] \ | |
419 | == COUPLING_DC) ? "DC" : "AC"); | |
420 | break; | |
421 | } | |
422 | } | |
423 | ||
424 | return SR_OK; | |
425 | } | |
426 | ||
427 | static int config_set(uint32_t key, GVariant *data, | |
428 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
429 | { | |
430 | struct dev_context *devc; | |
431 | int ch_idx, idx; | |
432 | ||
433 | devc = sdi->priv; | |
434 | if (!cg) { | |
435 | switch (key) { | |
436 | case SR_CONF_SAMPLERATE: | |
437 | devc->samplerate = g_variant_get_uint64(data); | |
438 | hantek_6xxx_update_samplerate(sdi); | |
439 | break; | |
440 | case SR_CONF_LIMIT_MSEC: | |
441 | devc->limit_msec = g_variant_get_uint64(data); | |
442 | break; | |
443 | case SR_CONF_LIMIT_SAMPLES: | |
444 | devc->limit_samples = g_variant_get_uint64(data); | |
445 | break; | |
446 | default: | |
447 | return SR_ERR_NA; | |
448 | } | |
449 | } else { | |
450 | if (sdi->channel_groups->data == cg) | |
451 | ch_idx = 0; | |
452 | else if (sdi->channel_groups->next->data == cg) | |
453 | ch_idx = 1; | |
454 | else | |
455 | return SR_ERR_ARG; | |
456 | switch (key) { | |
457 | case SR_CONF_VDIV: | |
458 | if ((idx = std_u64_tuple_idx(data, devc->vdivs, devc->vdivs_size)) < 0) | |
459 | return SR_ERR_ARG; | |
460 | devc->voltage[ch_idx] = idx; | |
461 | hantek_6xxx_update_vdiv(sdi); | |
462 | break; | |
463 | case SR_CONF_COUPLING: | |
464 | if ((idx = std_str_idx(data, devc->coupling_vals, | |
465 | devc->coupling_tab_size)) < 0) | |
466 | return SR_ERR_ARG; | |
467 | devc->coupling[ch_idx] = idx; | |
468 | hantek_6xxx_update_coupling(sdi); | |
469 | break; | |
470 | default: | |
471 | return SR_ERR_NA; | |
472 | } | |
473 | } | |
474 | ||
475 | return SR_OK; | |
476 | } | |
477 | ||
478 | static int config_list(uint32_t key, GVariant **data, | |
479 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
480 | { | |
481 | struct dev_context *devc; | |
482 | ||
483 | devc = (sdi) ? sdi->priv : NULL; | |
484 | ||
485 | if (!cg) { | |
486 | switch (key) { | |
487 | case SR_CONF_SCAN_OPTIONS: | |
488 | case SR_CONF_DEVICE_OPTIONS: | |
489 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
490 | case SR_CONF_SAMPLERATE: | |
491 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates)); | |
492 | break; | |
493 | default: | |
494 | return SR_ERR_NA; | |
495 | } | |
496 | } else { | |
497 | switch (key) { | |
498 | case SR_CONF_DEVICE_OPTIONS: | |
499 | *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg)); | |
500 | break; | |
501 | case SR_CONF_COUPLING: | |
502 | if (!devc) | |
503 | return SR_ERR_ARG; | |
504 | *data = g_variant_new_strv(devc->coupling_vals, devc->coupling_tab_size); | |
505 | break; | |
506 | case SR_CONF_VDIV: | |
507 | if (!devc) | |
508 | return SR_ERR_ARG; | |
509 | *data = std_gvar_tuple_array(devc->vdivs,devc->vdivs_size); | |
510 | break; | |
511 | default: | |
512 | return SR_ERR_NA; | |
513 | } | |
514 | } | |
515 | ||
516 | return SR_OK; | |
517 | } | |
518 | ||
519 | /* Minimise data amount for limit_samples and limit_msec limits. */ | |
520 | static uint32_t data_amount(const struct sr_dev_inst *sdi) | |
521 | { | |
522 | struct dev_context *devc = sdi->priv; | |
523 | uint32_t data_left, data_left_2, i; | |
524 | int32_t time_left; | |
525 | ||
526 | if (devc->limit_msec) { | |
527 | time_left = devc->limit_msec - (g_get_monotonic_time() - devc->aq_started) / 1000; | |
528 | data_left = devc->samplerate * MAX(time_left, 0) * NUM_CHANNELS / 1000; | |
529 | } else if (devc->limit_samples) { | |
530 | data_left = (devc->limit_samples - devc->samp_received) * NUM_CHANNELS; | |
531 | } else { | |
532 | data_left = devc->samplerate * NUM_CHANNELS; | |
533 | } | |
534 | ||
535 | /* Round up to nearest power of two. */ | |
536 | for (i = MIN_PACKET_SIZE; i < data_left; i *= 2) | |
537 | ; | |
538 | data_left_2 = i; | |
539 | ||
540 | sr_spew("data_amount: %u (rounded to power of 2: %u)", data_left, data_left_2); | |
541 | ||
542 | return data_left_2; | |
543 | } | |
544 | ||
545 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
546 | int num_samples) | |
547 | { | |
548 | struct sr_datafeed_packet packet; | |
549 | struct sr_datafeed_analog analog; | |
550 | struct sr_analog_encoding encoding; | |
551 | struct sr_analog_meaning meaning; | |
552 | struct sr_analog_spec spec; | |
553 | struct dev_context *devc = sdi->priv; | |
554 | GSList *channels = devc->enabled_channels; | |
555 | ||
556 | const float ch_bit[] = { RANGE(0) / 255, RANGE(1) / 255 }; | |
557 | const float ch_center[] = { RANGE(0) / 2, RANGE(1) / 2 }; | |
558 | ||
559 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); | |
560 | ||
561 | packet.type = SR_DF_ANALOG; | |
562 | packet.payload = &analog; | |
563 | ||
564 | analog.num_samples = num_samples; | |
565 | analog.meaning->mq = SR_MQ_VOLTAGE; | |
566 | analog.meaning->unit = SR_UNIT_VOLT; | |
567 | analog.meaning->mqflags = 0; | |
568 | ||
569 | analog.data = g_try_malloc(num_samples * sizeof(float)); | |
570 | if (!analog.data) { | |
571 | sr_err("Analog data buffer malloc failed."); | |
572 | devc->dev_state = STOPPING; | |
573 | return; | |
574 | } | |
575 | ||
576 | for (int ch = 0; ch < NUM_CHANNELS; ch++) { | |
577 | if (!devc->ch_enabled[ch]) | |
578 | continue; | |
579 | ||
580 | float vdivlog = log10f(ch_bit[ch]); | |
581 | int digits = -(int)vdivlog + (vdivlog < 0.0); | |
582 | analog.encoding->digits = digits; | |
583 | analog.spec->spec_digits = digits; | |
584 | analog.meaning->channels = g_slist_append(NULL, channels->data); | |
585 | ||
586 | for (int i = 0; i < num_samples; i++) { | |
587 | /* | |
588 | * The device always sends data for both channels. If a channel | |
589 | * is disabled, it contains a copy of the enabled channel's | |
590 | * data. However, we only send the requested channels to | |
591 | * the bus. | |
592 | * | |
593 | * Voltage values are encoded as a value 0-255, where the | |
594 | * value is a point in the range represented by the vdiv | |
595 | * setting. There are 10 vertical divs, so e.g. 500mV/div | |
596 | * represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V. | |
597 | */ | |
598 | ((float *)analog.data)[i] = ch_bit[ch] * *(buf + i * 2 + ch) - ch_center[ch]; | |
599 | } | |
600 | ||
601 | sr_session_send(sdi, &packet); | |
602 | g_slist_free(analog.meaning->channels); | |
603 | ||
604 | channels = channels->next; | |
605 | } | |
606 | g_free(analog.data); | |
607 | } | |
608 | ||
609 | /* | |
610 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
611 | * Only channel data comes in asynchronously, and all transfers for this are | |
612 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
613 | * the libsigrok session bus. | |
614 | */ | |
615 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
616 | { | |
617 | struct sr_dev_inst *sdi; | |
618 | struct dev_context *devc; | |
619 | ||
620 | sdi = transfer->user_data; | |
621 | devc = sdi->priv; | |
622 | ||
623 | if (devc->dev_state == FLUSH) { | |
624 | g_free(transfer->buffer); | |
625 | libusb_free_transfer(transfer); | |
626 | devc->dev_state = CAPTURE; | |
627 | devc->aq_started = g_get_monotonic_time(); | |
628 | read_channel(sdi, data_amount(sdi)); | |
629 | return; | |
630 | } | |
631 | ||
632 | if (devc->dev_state != CAPTURE) | |
633 | return; | |
634 | ||
635 | sr_spew("receive_transfer(): calculated samplerate == %" PRIu64 "ks/s", | |
636 | (uint64_t)(transfer->actual_length * 1000 / | |
637 | (g_get_monotonic_time() - devc->read_start_ts + 1) / | |
638 | NUM_CHANNELS)); | |
639 | ||
640 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
641 | libusb_error_name(transfer->status), transfer->actual_length); | |
642 | ||
643 | if (transfer->actual_length == 0) | |
644 | /* Nothing to send to the bus. */ | |
645 | return; | |
646 | ||
647 | unsigned samples_received = transfer->actual_length / NUM_CHANNELS; | |
648 | send_chunk(sdi, transfer->buffer, samples_received); | |
649 | devc->samp_received += samples_received; | |
650 | ||
651 | g_free(transfer->buffer); | |
652 | libusb_free_transfer(transfer); | |
653 | ||
654 | if (devc->limit_samples && devc->samp_received >= devc->limit_samples) { | |
655 | sr_info("Requested number of samples reached, stopping. %" | |
656 | PRIu64 " <= %" PRIu64, devc->limit_samples, | |
657 | devc->samp_received); | |
658 | sr_dev_acquisition_stop(sdi); | |
659 | } else if (devc->limit_msec && (g_get_monotonic_time() - | |
660 | devc->aq_started) / 1000 >= devc->limit_msec) { | |
661 | sr_info("Requested time limit reached, stopping. %d <= %d", | |
662 | (uint32_t)devc->limit_msec, | |
663 | (uint32_t)(g_get_monotonic_time() - devc->aq_started) / 1000); | |
664 | sr_dev_acquisition_stop(sdi); | |
665 | } else { | |
666 | read_channel(sdi, data_amount(sdi)); | |
667 | } | |
668 | } | |
669 | ||
670 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount) | |
671 | { | |
672 | int ret; | |
673 | struct dev_context *devc; | |
674 | ||
675 | devc = sdi->priv; | |
676 | ||
677 | amount = MIN(amount, MAX_PACKET_SIZE); | |
678 | ret = hantek_6xxx_get_channeldata(sdi, receive_transfer, amount); | |
679 | devc->read_start_ts = g_get_monotonic_time(); | |
680 | ||
681 | return ret; | |
682 | } | |
683 | ||
684 | static int handle_event(int fd, int revents, void *cb_data) | |
685 | { | |
686 | const struct sr_dev_inst *sdi; | |
687 | struct timeval tv; | |
688 | struct sr_dev_driver *di; | |
689 | struct dev_context *devc; | |
690 | struct drv_context *drvc; | |
691 | ||
692 | (void)fd; | |
693 | (void)revents; | |
694 | ||
695 | sdi = cb_data; | |
696 | di = sdi->driver; | |
697 | drvc = di->context; | |
698 | devc = sdi->priv; | |
699 | ||
700 | /* Always handle pending libusb events. */ | |
701 | tv.tv_sec = tv.tv_usec = 0; | |
702 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
703 | ||
704 | if (devc->dev_state == STOPPING) { | |
705 | /* We've been told to wind up the acquisition. */ | |
706 | sr_dbg("Stopping acquisition."); | |
707 | ||
708 | hantek_6xxx_stop_data_collecting(sdi); | |
709 | /* | |
710 | * TODO: Doesn't really cancel pending transfers so they might | |
711 | * come in after SR_DF_END is sent. | |
712 | */ | |
713 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
714 | ||
715 | std_session_send_df_end(sdi); | |
716 | ||
717 | devc->dev_state = IDLE; | |
718 | ||
719 | return TRUE; | |
720 | } | |
721 | ||
722 | return TRUE; | |
723 | } | |
724 | ||
725 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
726 | { | |
727 | struct dev_context *devc; | |
728 | struct sr_dev_driver *di = sdi->driver; | |
729 | struct drv_context *drvc = di->context; | |
730 | ||
731 | devc = sdi->priv; | |
732 | ||
733 | if (configure_channels(sdi) != SR_OK) { | |
734 | sr_err("Failed to configure channels."); | |
735 | return SR_ERR; | |
736 | } | |
737 | ||
738 | if (hantek_6xxx_init(sdi) != SR_OK) | |
739 | return SR_ERR; | |
740 | ||
741 | std_session_send_df_header(sdi); | |
742 | ||
743 | devc->samp_received = 0; | |
744 | devc->dev_state = FLUSH; | |
745 | ||
746 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, | |
747 | handle_event, (void *)sdi); | |
748 | ||
749 | hantek_6xxx_start_data_collecting(sdi); | |
750 | ||
751 | read_channel(sdi, FLUSH_PACKET_SIZE); | |
752 | ||
753 | return SR_OK; | |
754 | } | |
755 | ||
756 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
757 | { | |
758 | struct dev_context *devc; | |
759 | ||
760 | devc = sdi->priv; | |
761 | devc->dev_state = STOPPING; | |
762 | ||
763 | return SR_OK; | |
764 | } | |
765 | ||
766 | static struct sr_dev_driver hantek_6xxx_driver_info = { | |
767 | .name = "hantek-6xxx", | |
768 | .longname = "Hantek 6xxx", | |
769 | .api_version = 1, | |
770 | .init = std_init, | |
771 | .cleanup = std_cleanup, | |
772 | .scan = scan, | |
773 | .dev_list = std_dev_list, | |
774 | .dev_clear = dev_clear, | |
775 | .config_get = config_get, | |
776 | .config_set = config_set, | |
777 | .config_list = config_list, | |
778 | .dev_open = dev_open, | |
779 | .dev_close = dev_close, | |
780 | .dev_acquisition_start = dev_acquisition_start, | |
781 | .dev_acquisition_stop = dev_acquisition_stop, | |
782 | .context = NULL, | |
783 | }; | |
784 | SR_REGISTER_DEV_DRIVER(hantek_6xxx_driver_info); |