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6c6bc80a C |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
f2a66a8e | 4 | * Copyright (C) 2015 Christer Ekholm <christerekholm@gmail.com> |
6c6bc80a C |
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 "protocol.h" | |
22 | ||
f2a66a8e C |
23 | /* Max time in ms before we want to check on USB events */ |
24 | #define TICK 200 | |
25 | ||
26 | #define RANGE(ch) (((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * VDIV_MULTIPLIER) | |
27 | ||
28 | static const uint32_t scanopts[] = { | |
29 | SR_CONF_CONN, | |
30 | }; | |
31 | ||
32 | static const uint32_t drvopts[] = { | |
33 | SR_CONF_OSCILLOSCOPE, | |
34 | }; | |
35 | ||
36 | static const uint32_t devopts[] = { | |
37 | SR_CONF_CONN | SR_CONF_GET, | |
38 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
39 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
40 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
41 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
42 | }; | |
43 | ||
44 | static const uint32_t devopts_cg[] = { | |
45 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
46 | }; | |
47 | ||
48 | static const char *channel_names[] = { | |
49 | "CH1", "CH2", | |
50 | }; | |
51 | ||
52 | static const struct hantek_6xxx_profile dev_profiles[] = { | |
53 | { | |
54 | 0x04b4, 0x6022, 0x04b5, 0x6022, | |
55 | "Hantek", "6022BE", "hantek-6022be.fw", | |
56 | }, | |
57 | ALL_ZERO | |
58 | }; | |
59 | ||
60 | static const uint64_t samplerates[] = { | |
61 | SAMPLERATE_VALUES | |
62 | }; | |
63 | ||
64 | static const uint64_t vdivs[][2] = { | |
65 | VDIV_VALUES | |
66 | }; | |
67 | ||
6c6bc80a C |
68 | SR_PRIV struct sr_dev_driver hantek_6xxx_driver_info; |
69 | ||
f2a66a8e C |
70 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount); |
71 | ||
72 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
73 | ||
74 | static struct sr_dev_inst *hantek_6xxx_dev_new(const struct hantek_6xxx_profile *prof) | |
75 | { | |
76 | struct sr_dev_inst *sdi; | |
77 | struct sr_channel *ch; | |
78 | struct sr_channel_group *cg; | |
79 | struct drv_context *drvc; | |
80 | struct dev_context *devc; | |
81 | unsigned int i; | |
82 | ||
83 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
84 | sdi->status = SR_ST_INITIALIZING; | |
85 | sdi->vendor = g_strdup(prof->vendor); | |
86 | sdi->model = g_strdup(prof->model); | |
87 | sdi->driver = &hantek_6xxx_driver_info; | |
88 | ||
89 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
90 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
91 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
92 | cg->name = g_strdup(channel_names[i]); | |
93 | cg->channels = g_slist_append(cg->channels, ch); | |
94 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
95 | } | |
96 | ||
97 | devc = g_malloc0(sizeof(struct dev_context)); | |
98 | ||
99 | for (i = 0; i < NUM_CHANNELS; i++) { | |
100 | devc->ch_enabled[i] = TRUE; | |
101 | devc->voltage[i] = DEFAULT_VOLTAGE; | |
102 | } | |
103 | ||
104 | devc->sample_buf = NULL; | |
105 | devc->sample_buf_write = 0; | |
106 | devc->sample_buf_size = 0; | |
107 | ||
108 | devc->profile = prof; | |
109 | devc->dev_state = IDLE; | |
110 | devc->samplerate = DEFAULT_SAMPLERATE; | |
111 | ||
112 | sdi->priv = devc; | |
113 | drvc = sdi->driver->context; | |
114 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
115 | ||
116 | return sdi; | |
117 | } | |
118 | ||
119 | static int configure_channels(const struct sr_dev_inst *sdi) | |
120 | { | |
121 | struct dev_context *devc; | |
122 | const GSList *l; | |
123 | int p; | |
124 | struct sr_channel *ch; | |
125 | devc = sdi->priv; | |
126 | ||
127 | g_slist_free(devc->enabled_channels); | |
128 | devc->enabled_channels = NULL; | |
129 | memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled)); | |
130 | ||
131 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
132 | ch = l->data; | |
133 | if (p < NUM_CHANNELS) { | |
134 | devc->ch_enabled[p] = ch->enabled; | |
135 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
136 | } | |
137 | } | |
138 | ||
139 | return SR_OK; | |
140 | } | |
141 | ||
142 | static void clear_dev_context(void *priv) | |
143 | { | |
144 | struct dev_context *devc; | |
145 | ||
146 | devc = priv; | |
147 | g_slist_free(devc->enabled_channels); | |
148 | } | |
149 | ||
150 | static int dev_clear(const struct sr_dev_driver *di) | |
151 | { | |
152 | return std_dev_clear(di, clear_dev_context); | |
153 | } | |
154 | ||
6c6bc80a C |
155 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
156 | { | |
157 | return std_init(sr_ctx, di, LOG_PREFIX); | |
158 | } | |
159 | ||
160 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
161 | { | |
162 | struct drv_context *drvc; | |
f2a66a8e C |
163 | struct dev_context *devc; |
164 | struct sr_dev_inst *sdi; | |
165 | struct sr_usb_dev_inst *usb; | |
166 | struct sr_config *src; | |
167 | const struct hantek_6xxx_profile *prof; | |
168 | GSList *l, *devices, *conn_devices; | |
169 | struct libusb_device_descriptor des; | |
170 | libusb_device **devlist; | |
171 | int i, j; | |
172 | const char *conn; | |
173 | char connection_id[64]; | |
6c6bc80a | 174 | |
6c6bc80a | 175 | drvc = di->context; |
6c6bc80a | 176 | |
f2a66a8e C |
177 | devices = 0; |
178 | ||
179 | conn = NULL; | |
180 | for (l = options; l; l = l->next) { | |
181 | src = l->data; | |
182 | if (src->key == SR_CONF_CONN) { | |
183 | conn = g_variant_get_string(src->data, NULL); | |
184 | break; | |
185 | } | |
186 | } | |
187 | if (conn) | |
188 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
189 | else | |
190 | conn_devices = NULL; | |
191 | ||
192 | /* Find all Hantek 60xx devices and upload firmware to all of them. */ | |
193 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
194 | for (i = 0; devlist[i]; i++) { | |
195 | if (conn) { | |
196 | usb = NULL; | |
197 | for (l = conn_devices; l; l = l->next) { | |
198 | usb = l->data; | |
199 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
200 | && usb->address == libusb_get_device_address(devlist[i])) | |
201 | break; | |
202 | } | |
203 | if (!l) | |
204 | /* This device matched none of the ones that | |
205 | * matched the conn specification. */ | |
206 | continue; | |
207 | } | |
208 | ||
c940b7a3 | 209 | libusb_get_device_descriptor(devlist[i], &des); |
f2a66a8e C |
210 | |
211 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
212 | ||
213 | prof = NULL; | |
214 | for (j = 0; j < (int)ARRAY_SIZE(dev_profiles); j++) { | |
215 | if (des.idVendor == dev_profiles[j].orig_vid | |
216 | && des.idProduct == dev_profiles[j].orig_pid) { | |
217 | /* Device matches the pre-firmware profile. */ | |
218 | prof = &dev_profiles[j]; | |
219 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
220 | sdi = hantek_6xxx_dev_new(prof); | |
221 | sdi->connection_id = g_strdup(connection_id); | |
222 | devices = g_slist_append(devices, sdi); | |
223 | devc = sdi->priv; | |
224 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
225 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
226 | /* Remember when the firmware on this device was updated. */ | |
227 | devc->fw_updated = g_get_monotonic_time(); | |
228 | else | |
229 | sr_err("Firmware upload failed."); | |
230 | /* Dummy USB address of 0xff will get overwritten later. */ | |
231 | sdi->conn = sr_usb_dev_inst_new( | |
232 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
233 | break; | |
234 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
235 | && des.idProduct == dev_profiles[j].fw_pid) { | |
236 | /* Device matches the post-firmware profile. */ | |
237 | prof = &dev_profiles[j]; | |
238 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
239 | sdi = hantek_6xxx_dev_new(prof); | |
240 | sdi->connection_id = g_strdup(connection_id); | |
241 | sdi->status = SR_ST_INACTIVE; | |
242 | devices = g_slist_append(devices, sdi); | |
243 | sdi->inst_type = SR_INST_USB; | |
244 | sdi->conn = sr_usb_dev_inst_new( | |
245 | libusb_get_bus_number(devlist[i]), | |
246 | libusb_get_device_address(devlist[i]), NULL); | |
247 | break; | |
248 | } | |
249 | } | |
250 | if (!prof) | |
251 | /* Not a supported VID/PID. */ | |
252 | continue; | |
253 | } | |
254 | libusb_free_device_list(devlist, 1); | |
6c6bc80a C |
255 | |
256 | return devices; | |
257 | } | |
258 | ||
259 | static GSList *dev_list(const struct sr_dev_driver *di) | |
260 | { | |
261 | return ((struct drv_context *)(di->context))->instances; | |
262 | } | |
263 | ||
6c6bc80a C |
264 | static int dev_open(struct sr_dev_inst *sdi) |
265 | { | |
f2a66a8e C |
266 | struct dev_context *devc; |
267 | struct sr_usb_dev_inst *usb; | |
268 | int64_t timediff_us, timediff_ms; | |
269 | int err; | |
270 | ||
271 | devc = sdi->priv; | |
272 | usb = sdi->conn; | |
273 | ||
274 | /* | |
275 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
276 | * for the FX2 to renumerate. | |
277 | */ | |
278 | err = SR_ERR; | |
279 | if (devc->fw_updated > 0) { | |
280 | sr_info("Waiting for device to reset."); | |
281 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
282 | g_usleep(300 * 1000); | |
283 | timediff_ms = 0; | |
284 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
285 | if ((err = hantek_6xxx_open(sdi)) == SR_OK) | |
286 | break; | |
287 | g_usleep(100 * 1000); | |
288 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
289 | timediff_ms = timediff_us / 1000; | |
290 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
291 | } | |
292 | if (timediff_ms < MAX_RENUM_DELAY_MS) | |
293 | sr_info("Device came back after %"PRIu64" ms.", timediff_ms); | |
294 | } else { | |
295 | err = hantek_6xxx_open(sdi); | |
296 | } | |
6c6bc80a | 297 | |
f2a66a8e C |
298 | if (err != SR_OK) { |
299 | sr_err("Unable to open device."); | |
300 | return SR_ERR; | |
301 | } | |
6c6bc80a | 302 | |
f2a66a8e C |
303 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); |
304 | if (err != 0) { | |
305 | sr_err("Unable to claim interface: %s.", | |
306 | libusb_error_name(err)); | |
307 | return SR_ERR; | |
308 | } | |
6c6bc80a C |
309 | |
310 | return SR_OK; | |
311 | } | |
312 | ||
313 | static int dev_close(struct sr_dev_inst *sdi) | |
314 | { | |
f2a66a8e | 315 | hantek_6xxx_close(sdi); |
6c6bc80a C |
316 | |
317 | return SR_OK; | |
318 | } | |
319 | ||
320 | static int cleanup(const struct sr_dev_driver *di) | |
321 | { | |
f2a66a8e | 322 | return dev_clear(di); |
6c6bc80a C |
323 | } |
324 | ||
325 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
326 | const struct sr_channel_group *cg) | |
327 | { | |
f2a66a8e C |
328 | struct dev_context *devc; |
329 | struct sr_usb_dev_inst *usb; | |
330 | char str[128]; | |
331 | const uint64_t *vdiv; | |
332 | int ch_idx; | |
6c6bc80a | 333 | |
6c6bc80a | 334 | switch (key) { |
f2a66a8e C |
335 | case SR_CONF_NUM_VDIV: |
336 | *data = g_variant_new_int32(ARRAY_SIZE(vdivs)); | |
337 | break; | |
6c6bc80a C |
338 | } |
339 | ||
f2a66a8e C |
340 | if (!sdi) |
341 | return SR_ERR_ARG; | |
342 | ||
343 | devc = sdi->priv; | |
344 | if (!cg) { | |
345 | switch (key) { | |
346 | case SR_CONF_SAMPLERATE: | |
347 | *data = g_variant_new_uint64(devc->samplerate); | |
348 | break; | |
349 | case SR_CONF_LIMIT_MSEC: | |
350 | *data = g_variant_new_uint64(devc->limit_msec); | |
351 | break; | |
352 | case SR_CONF_LIMIT_SAMPLES: | |
353 | *data = g_variant_new_uint64(devc->limit_samples); | |
354 | break; | |
355 | case SR_CONF_CONN: | |
356 | if (!sdi->conn) | |
357 | return SR_ERR_ARG; | |
358 | usb = sdi->conn; | |
359 | if (usb->address == 255) | |
360 | /* Device still needs to re-enumerate after firmware | |
361 | * upload, so we don't know its (future) address. */ | |
362 | return SR_ERR; | |
363 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
364 | *data = g_variant_new_string(str); | |
365 | break; | |
366 | default: | |
367 | return SR_ERR_NA; | |
368 | } | |
369 | } else { | |
370 | if (sdi->channel_groups->data == cg) | |
371 | ch_idx = 0; | |
372 | else if (sdi->channel_groups->next->data == cg) | |
373 | ch_idx = 1; | |
374 | else | |
375 | return SR_ERR_ARG; | |
376 | switch (key) { | |
377 | case SR_CONF_VDIV: | |
378 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
379 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
380 | break; | |
381 | } | |
382 | } | |
383 | ||
384 | return SR_OK; | |
6c6bc80a C |
385 | } |
386 | ||
387 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
388 | const struct sr_channel_group *cg) | |
389 | { | |
f2a66a8e C |
390 | struct dev_context *devc; |
391 | uint64_t p, q; | |
392 | int tmp_int, ch_idx, ret; | |
393 | unsigned int i; | |
6c6bc80a C |
394 | |
395 | if (sdi->status != SR_ST_ACTIVE) | |
396 | return SR_ERR_DEV_CLOSED; | |
397 | ||
398 | ret = SR_OK; | |
f2a66a8e C |
399 | devc = sdi->priv; |
400 | if (!cg) { | |
401 | switch (key) { | |
402 | case SR_CONF_SAMPLERATE: | |
403 | devc->samplerate = g_variant_get_uint64(data); | |
404 | hantek_6xxx_update_samplerate(sdi); | |
405 | break; | |
406 | case SR_CONF_LIMIT_MSEC: | |
407 | devc->limit_msec = g_variant_get_uint64(data); | |
408 | break; | |
409 | case SR_CONF_LIMIT_SAMPLES: | |
410 | devc->limit_samples = g_variant_get_uint64(data); | |
411 | break; | |
412 | default: | |
413 | ret = SR_ERR_NA; | |
414 | break; | |
415 | } | |
416 | } else { | |
417 | if (sdi->channel_groups->data == cg) | |
418 | ch_idx = 0; | |
419 | else if (sdi->channel_groups->next->data == cg) | |
420 | ch_idx = 1; | |
421 | else | |
422 | return SR_ERR_ARG; | |
423 | switch (key) { | |
424 | case SR_CONF_VDIV: | |
425 | g_variant_get(data, "(tt)", &p, &q); | |
426 | tmp_int = -1; | |
427 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
428 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
429 | tmp_int = i; | |
430 | break; | |
431 | } | |
432 | } | |
433 | if (tmp_int >= 0) { | |
434 | devc->voltage[ch_idx] = tmp_int; | |
435 | hantek_6xxx_update_vdiv(sdi); | |
436 | } else | |
437 | ret = SR_ERR_ARG; | |
438 | break; | |
439 | default: | |
440 | ret = SR_ERR_NA; | |
441 | break; | |
442 | } | |
6c6bc80a C |
443 | } |
444 | ||
445 | return ret; | |
446 | } | |
447 | ||
448 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
449 | const struct sr_channel_group *cg) | |
450 | { | |
f2a66a8e C |
451 | GVariant *tuple, *rational[2]; |
452 | GVariantBuilder gvb; | |
453 | unsigned int i; | |
454 | GVariant *gvar; | |
455 | ||
456 | if (key == SR_CONF_SCAN_OPTIONS) { | |
457 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
458 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
459 | return SR_OK; | |
460 | } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
461 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
462 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
463 | return SR_OK; | |
464 | } | |
6c6bc80a | 465 | |
f2a66a8e C |
466 | if (!sdi) |
467 | return SR_ERR_ARG; | |
468 | ||
469 | if (!cg) { | |
470 | switch (key) { | |
471 | case SR_CONF_DEVICE_OPTIONS: | |
472 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
473 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
474 | break; | |
475 | case SR_CONF_SAMPLERATE: | |
476 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
477 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
478 | samplerates, ARRAY_SIZE(samplerates), | |
479 | sizeof(uint64_t)); | |
480 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
481 | *data = g_variant_builder_end(&gvb); | |
482 | break; | |
483 | default: | |
484 | return SR_ERR_NA; | |
485 | } | |
486 | } else { | |
487 | switch (key) { | |
488 | case SR_CONF_DEVICE_OPTIONS: | |
489 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
490 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t)); | |
491 | break; | |
492 | case SR_CONF_VDIV: | |
493 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
494 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
495 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
496 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
497 | tuple = g_variant_new_tuple(rational, 2); | |
498 | g_variant_builder_add_value(&gvb, tuple); | |
499 | } | |
500 | *data = g_variant_builder_end(&gvb); | |
501 | break; | |
502 | default: | |
503 | return SR_ERR_NA; | |
504 | } | |
505 | } | |
6c6bc80a | 506 | |
f2a66a8e C |
507 | return SR_OK; |
508 | } | |
509 | ||
510 | /* Minimise data amount for limit_samples and limit_msec limits. */ | |
511 | static uint32_t data_amount(const struct sr_dev_inst *sdi) | |
512 | { | |
513 | struct dev_context *devc = sdi->priv; | |
514 | uint32_t data_left; | |
515 | int32_t time_left; | |
516 | ||
517 | if (devc->limit_msec) { | |
518 | time_left = devc->limit_msec - (g_get_monotonic_time() - devc->aq_started) / 1000; | |
519 | data_left = devc->samplerate * MAX(time_left, 0) * NUM_CHANNELS / 1000; | |
520 | } else if (devc->limit_samples) { | |
521 | data_left = (devc->limit_samples - devc->samp_received) * NUM_CHANNELS; | |
522 | } else { | |
523 | data_left = devc->samplerate * NUM_CHANNELS; | |
524 | } | |
525 | ||
526 | data_left += MIN_PACKET_SIZE; /* Driver does not handle small buffers. */ | |
527 | ||
528 | sr_spew("data_amount %u", data_left); | |
529 | ||
530 | return data_left; | |
531 | } | |
532 | ||
533 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
534 | int num_samples) | |
535 | { | |
536 | struct sr_datafeed_packet packet; | |
537 | struct sr_datafeed_analog_old analog; | |
538 | struct dev_context *devc = sdi->priv; | |
539 | int num_channels, data_offset, i; | |
540 | ||
541 | const float ch1_bit = RANGE(0) / 255; | |
542 | const float ch2_bit = RANGE(1) / 255; | |
543 | const float ch1_center = RANGE(0) / 2; | |
544 | const float ch2_center = RANGE(1) / 2; | |
545 | ||
546 | const gboolean ch1_ena = !!devc->ch_enabled[0]; | |
547 | const gboolean ch2_ena = !!devc->ch_enabled[1]; | |
548 | ||
549 | num_channels = (ch1_ena && ch2_ena) ? 2 : 1; | |
550 | packet.type = SR_DF_ANALOG_OLD; | |
551 | packet.payload = &analog; | |
552 | ||
553 | analog.channels = devc->enabled_channels; | |
554 | analog.num_samples = num_samples; | |
555 | analog.mq = SR_MQ_VOLTAGE; | |
556 | analog.unit = SR_UNIT_VOLT; | |
557 | analog.mqflags = 0; | |
558 | ||
559 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels); | |
560 | if (!analog.data) { | |
561 | sr_err("Analog data buffer malloc failed."); | |
562 | devc->dev_state = STOPPING; | |
563 | return; | |
564 | } | |
565 | ||
566 | data_offset = 0; | |
567 | for (i = 0; i < num_samples; i++) { | |
568 | /* | |
569 | * The device always sends data for both channels. If a channel | |
570 | * is disabled, it contains a copy of the enabled channel's | |
571 | * data. However, we only send the requested channels to | |
572 | * the bus. | |
573 | * | |
574 | * Voltage values are encoded as a value 0-255, where the | |
575 | * value is a point in the range represented by the vdiv | |
576 | * setting. There are 10 vertical divs, so e.g. 500mV/div | |
577 | * represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V. | |
578 | */ | |
579 | if (ch1_ena) | |
580 | analog.data[data_offset++] = (ch1_bit * *(buf + i * 2) - ch1_center); | |
581 | if (ch2_ena) | |
582 | analog.data[data_offset++] = (ch2_bit * *(buf + i * 2 + 1) - ch2_center); | |
583 | } | |
584 | ||
585 | sr_session_send(devc->cb_data, &packet); | |
586 | g_free(analog.data); | |
587 | } | |
588 | ||
589 | static void send_data(struct sr_dev_inst *sdi, struct libusb_transfer *buf[], uint64_t samples) | |
590 | { | |
591 | int i = 0; | |
592 | uint64_t send = 0; | |
593 | uint32_t chunk; | |
594 | ||
595 | while (send < samples) { | |
596 | chunk = MIN(samples - send, (uint64_t)(buf[i]->actual_length / NUM_CHANNELS)); | |
597 | send += chunk; | |
598 | send_chunk(sdi, buf[i]->buffer, chunk); | |
599 | ||
600 | /* | |
601 | * Everything in this transfer was either copied to the buffer | |
602 | * or sent to the session bus. | |
603 | */ | |
604 | g_free(buf[i]->buffer); | |
605 | libusb_free_transfer(buf[i]); | |
606 | i++; | |
607 | } | |
608 | } | |
609 | ||
610 | /* | |
611 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
612 | * Only channel data comes in asynchronously, and all transfers for this are | |
613 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
614 | * the libsigrok session bus. | |
615 | */ | |
616 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
617 | { | |
618 | struct sr_dev_inst *sdi; | |
619 | struct dev_context *devc; | |
620 | ||
621 | sdi = transfer->user_data; | |
622 | devc = sdi->priv; | |
623 | ||
624 | if (devc->dev_state == FLUSH) { | |
625 | devc->dev_state = CAPTURE; | |
626 | devc->aq_started = g_get_monotonic_time(); | |
627 | read_channel(sdi, data_amount(sdi)); | |
628 | return; | |
629 | } | |
630 | ||
631 | if (devc->dev_state != CAPTURE) | |
632 | return; | |
633 | ||
634 | if (!devc->sample_buf) { | |
635 | devc->sample_buf_size = 10; | |
636 | devc->sample_buf = g_try_malloc(devc->sample_buf_size * sizeof(transfer)); | |
637 | devc->sample_buf_write = 0; | |
638 | } | |
639 | ||
640 | if (devc->sample_buf_write >= devc->sample_buf_size) { | |
641 | devc->sample_buf_size += 10; | |
642 | devc->sample_buf = g_try_realloc(devc->sample_buf, | |
643 | devc->sample_buf_size * sizeof(transfer)); | |
644 | if (!devc->sample_buf) { | |
645 | sr_err("Sample buffer malloc failed."); | |
646 | devc->dev_state = STOPPING; | |
647 | return; | |
648 | } | |
6c6bc80a C |
649 | } |
650 | ||
f2a66a8e C |
651 | devc->sample_buf[devc->sample_buf_write++] = transfer; |
652 | devc->samp_received = transfer->actual_length / NUM_CHANNELS; | |
653 | ||
654 | sr_spew("receive_transfer(): calculated samplerate == %" PRIu64 "ks/s", | |
655 | (uint64_t)(transfer->actual_length * 1000 / | |
656 | (g_get_monotonic_time() - devc->read_start_ts + 1) / | |
657 | NUM_CHANNELS)); | |
658 | ||
659 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
660 | libusb_error_name(transfer->status), transfer->actual_length); | |
661 | ||
662 | if (transfer->actual_length == 0) | |
663 | /* Nothing to send to the bus. */ | |
664 | return; | |
665 | ||
666 | if (devc->limit_samples && devc->samp_received >= devc->limit_samples) { | |
667 | sr_info("Requested number of samples reached, stopping. %" | |
668 | PRIu64 " <= %" PRIu64, devc->limit_samples, | |
669 | devc->samp_received); | |
670 | send_data(sdi, devc->sample_buf, devc->limit_samples); | |
671 | sdi->driver->dev_acquisition_stop(sdi, NULL); | |
672 | } else if (devc->limit_msec && (g_get_monotonic_time() - | |
673 | devc->aq_started) / 1000 >= devc->limit_msec) { | |
674 | sr_info("Requested time limit reached, stopping. %d <= %d", | |
675 | (uint32_t)devc->limit_msec, | |
676 | (uint32_t)(g_get_monotonic_time() - devc->aq_started) / 1000); | |
677 | send_data(sdi, devc->sample_buf, devc->samp_received); | |
678 | g_free(devc->sample_buf); | |
679 | devc->sample_buf = NULL; | |
680 | sdi->driver->dev_acquisition_stop(sdi, NULL); | |
681 | } else { | |
682 | read_channel(sdi, data_amount(sdi)); | |
683 | } | |
684 | } | |
685 | ||
686 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount) | |
687 | { | |
688 | int ret; | |
689 | struct dev_context *devc; | |
690 | ||
691 | devc = sdi->priv; | |
692 | ||
693 | amount = MIN(amount, MAX_PACKET_SIZE); | |
694 | ret = hantek_6xxx_get_channeldata(sdi, receive_transfer, amount); | |
695 | devc->read_start_ts = g_get_monotonic_time(); | |
696 | devc->read_data_amount = amount; | |
697 | ||
6c6bc80a C |
698 | return ret; |
699 | } | |
700 | ||
f2a66a8e | 701 | static int handle_event(int fd, int revents, void *cb_data) |
6c6bc80a | 702 | { |
f2a66a8e C |
703 | const struct sr_dev_inst *sdi; |
704 | struct sr_datafeed_packet packet; | |
705 | struct timeval tv; | |
706 | struct sr_dev_driver *di; | |
707 | struct dev_context *devc; | |
708 | struct drv_context *drvc; | |
709 | ||
710 | (void)fd; | |
711 | (void)revents; | |
712 | ||
713 | sdi = cb_data; | |
714 | di = sdi->driver; | |
715 | drvc = di->context; | |
716 | devc = sdi->priv; | |
717 | ||
718 | /* Always handle pending libusb events. */ | |
719 | tv.tv_sec = tv.tv_usec = 0; | |
720 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
721 | ||
722 | if (devc->dev_state == STOPPING) { | |
723 | /* We've been told to wind up the acquisition. */ | |
724 | sr_dbg("Stopping acquisition."); | |
725 | ||
726 | hantek_6xxx_stop_data_collecting(sdi); | |
727 | /* | |
728 | * TODO: Doesn't really cancel pending transfers so they might | |
729 | * come in after SR_DF_END is sent. | |
730 | */ | |
731 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
732 | ||
733 | packet.type = SR_DF_END; | |
734 | packet.payload = NULL; | |
735 | sr_session_send(sdi, &packet); | |
736 | ||
737 | devc->dev_state = IDLE; | |
738 | ||
739 | return TRUE; | |
740 | } | |
741 | ||
742 | return TRUE; | |
743 | } | |
744 | ||
745 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
746 | { | |
747 | struct dev_context *devc; | |
748 | struct sr_dev_driver *di = sdi->driver; | |
749 | struct drv_context *drvc = di->context; | |
6c6bc80a C |
750 | |
751 | if (sdi->status != SR_ST_ACTIVE) | |
752 | return SR_ERR_DEV_CLOSED; | |
753 | ||
f2a66a8e C |
754 | devc = sdi->priv; |
755 | devc->cb_data = cb_data; | |
756 | ||
757 | if (configure_channels(sdi) != SR_OK) { | |
758 | sr_err("Failed to configure channels."); | |
759 | return SR_ERR; | |
760 | } | |
761 | ||
762 | if (hantek_6xxx_init(sdi) != SR_OK) | |
763 | return SR_ERR; | |
764 | ||
765 | /* Send header packet to the session bus. */ | |
766 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
767 | ||
768 | devc->samp_received = 0; | |
769 | devc->dev_state = FLUSH; | |
770 | ||
771 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, | |
772 | handle_event, (void *)sdi); | |
773 | ||
774 | hantek_6xxx_start_data_collecting(sdi); | |
775 | ||
776 | read_channel(sdi, FLUSH_PACKET_SIZE); | |
6c6bc80a C |
777 | |
778 | return SR_OK; | |
779 | } | |
780 | ||
781 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
782 | { | |
f2a66a8e C |
783 | struct dev_context *devc; |
784 | ||
6c6bc80a C |
785 | (void)cb_data; |
786 | ||
787 | if (sdi->status != SR_ST_ACTIVE) | |
f2a66a8e C |
788 | return SR_ERR; |
789 | ||
790 | devc = sdi->priv; | |
791 | devc->dev_state = STOPPING; | |
6c6bc80a | 792 | |
f2a66a8e | 793 | g_free(devc->sample_buf); devc->sample_buf = NULL; |
6c6bc80a C |
794 | |
795 | return SR_OK; | |
796 | } | |
797 | ||
798 | SR_PRIV struct sr_dev_driver hantek_6xxx_driver_info = { | |
799 | .name = "hantek-6xxx", | |
800 | .longname = "Hantek 6xxx", | |
801 | .api_version = 1, | |
802 | .init = init, | |
803 | .cleanup = cleanup, | |
804 | .scan = scan, | |
805 | .dev_list = dev_list, | |
806 | .dev_clear = dev_clear, | |
807 | .config_get = config_get, | |
808 | .config_set = config_set, | |
809 | .config_list = config_list, | |
810 | .dev_open = dev_open, | |
811 | .dev_close = dev_close, | |
812 | .dev_acquisition_start = dev_acquisition_start, | |
813 | .dev_acquisition_stop = dev_acquisition_stop, | |
814 | .context = NULL, | |
815 | }; |