]>
Commit | Line | Data |
---|---|---|
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, | |
cc5ebc8a | 46 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
f2a66a8e C |
47 | }; |
48 | ||
49 | static const char *channel_names[] = { | |
50 | "CH1", "CH2", | |
51 | }; | |
52 | ||
cc5ebc8a BL |
53 | static const char *coupling[] = { |
54 | "AC", "DC", | |
55 | }; | |
56 | ||
f2a66a8e C |
57 | static const struct hantek_6xxx_profile dev_profiles[] = { |
58 | { | |
59 | 0x04b4, 0x6022, 0x04b5, 0x6022, | |
60 | "Hantek", "6022BE", "hantek-6022be.fw", | |
61 | }, | |
692c3b22 | 62 | { |
1079324f | 63 | 0x8102, 0x8102, 0x1D50, 0x608E, |
692c3b22 BL |
64 | "Sainsmart", "DDS120", "sainsmart-dds120.fw", |
65 | }, | |
f2a66a8e C |
66 | ALL_ZERO |
67 | }; | |
68 | ||
69 | static const uint64_t samplerates[] = { | |
70 | SAMPLERATE_VALUES | |
71 | }; | |
72 | ||
73 | static const uint64_t vdivs[][2] = { | |
74 | VDIV_VALUES | |
75 | }; | |
76 | ||
6c6bc80a C |
77 | SR_PRIV struct sr_dev_driver hantek_6xxx_driver_info; |
78 | ||
f2a66a8e C |
79 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount); |
80 | ||
81 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
82 | ||
83 | static struct sr_dev_inst *hantek_6xxx_dev_new(const struct hantek_6xxx_profile *prof) | |
84 | { | |
85 | struct sr_dev_inst *sdi; | |
86 | struct sr_channel *ch; | |
87 | struct sr_channel_group *cg; | |
88 | struct drv_context *drvc; | |
89 | struct dev_context *devc; | |
90 | unsigned int i; | |
91 | ||
92 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
93 | sdi->status = SR_ST_INITIALIZING; | |
94 | sdi->vendor = g_strdup(prof->vendor); | |
95 | sdi->model = g_strdup(prof->model); | |
96 | sdi->driver = &hantek_6xxx_driver_info; | |
97 | ||
98 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
99 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
100 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
101 | cg->name = g_strdup(channel_names[i]); | |
102 | cg->channels = g_slist_append(cg->channels, ch); | |
103 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
104 | } | |
105 | ||
106 | devc = g_malloc0(sizeof(struct dev_context)); | |
107 | ||
108 | for (i = 0; i < NUM_CHANNELS; i++) { | |
109 | devc->ch_enabled[i] = TRUE; | |
110 | devc->voltage[i] = DEFAULT_VOLTAGE; | |
cc5ebc8a | 111 | devc->coupling[i] = DEFAULT_COUPLING; |
f2a66a8e C |
112 | } |
113 | ||
114 | devc->sample_buf = NULL; | |
115 | devc->sample_buf_write = 0; | |
116 | devc->sample_buf_size = 0; | |
117 | ||
118 | devc->profile = prof; | |
119 | devc->dev_state = IDLE; | |
120 | devc->samplerate = DEFAULT_SAMPLERATE; | |
121 | ||
122 | sdi->priv = devc; | |
123 | drvc = sdi->driver->context; | |
124 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
125 | ||
126 | return sdi; | |
127 | } | |
128 | ||
129 | static int configure_channels(const struct sr_dev_inst *sdi) | |
130 | { | |
131 | struct dev_context *devc; | |
132 | const GSList *l; | |
133 | int p; | |
134 | struct sr_channel *ch; | |
135 | devc = sdi->priv; | |
136 | ||
137 | g_slist_free(devc->enabled_channels); | |
138 | devc->enabled_channels = NULL; | |
139 | memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled)); | |
140 | ||
141 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
142 | ch = l->data; | |
143 | if (p < NUM_CHANNELS) { | |
144 | devc->ch_enabled[p] = ch->enabled; | |
145 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
146 | } | |
147 | } | |
148 | ||
149 | return SR_OK; | |
150 | } | |
151 | ||
152 | static void clear_dev_context(void *priv) | |
153 | { | |
154 | struct dev_context *devc; | |
155 | ||
156 | devc = priv; | |
157 | g_slist_free(devc->enabled_channels); | |
5954e716 | 158 | g_free(devc); |
f2a66a8e C |
159 | } |
160 | ||
161 | static int dev_clear(const struct sr_dev_driver *di) | |
162 | { | |
163 | return std_dev_clear(di, clear_dev_context); | |
164 | } | |
165 | ||
6c6bc80a C |
166 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
167 | { | |
168 | return std_init(sr_ctx, di, LOG_PREFIX); | |
169 | } | |
170 | ||
171 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
172 | { | |
173 | struct drv_context *drvc; | |
f2a66a8e C |
174 | struct dev_context *devc; |
175 | struct sr_dev_inst *sdi; | |
176 | struct sr_usb_dev_inst *usb; | |
177 | struct sr_config *src; | |
178 | const struct hantek_6xxx_profile *prof; | |
179 | GSList *l, *devices, *conn_devices; | |
180 | struct libusb_device_descriptor des; | |
181 | libusb_device **devlist; | |
182 | int i, j; | |
183 | const char *conn; | |
184 | char connection_id[64]; | |
6c6bc80a | 185 | |
6c6bc80a | 186 | drvc = di->context; |
6c6bc80a | 187 | |
f2a66a8e C |
188 | devices = 0; |
189 | ||
190 | conn = NULL; | |
191 | for (l = options; l; l = l->next) { | |
192 | src = l->data; | |
193 | if (src->key == SR_CONF_CONN) { | |
194 | conn = g_variant_get_string(src->data, NULL); | |
195 | break; | |
196 | } | |
197 | } | |
198 | if (conn) | |
199 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
200 | else | |
201 | conn_devices = NULL; | |
202 | ||
203 | /* Find all Hantek 60xx devices and upload firmware to all of them. */ | |
204 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
205 | for (i = 0; devlist[i]; i++) { | |
206 | if (conn) { | |
207 | usb = NULL; | |
208 | for (l = conn_devices; l; l = l->next) { | |
209 | usb = l->data; | |
210 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
211 | && usb->address == libusb_get_device_address(devlist[i])) | |
212 | break; | |
213 | } | |
214 | if (!l) | |
215 | /* This device matched none of the ones that | |
216 | * matched the conn specification. */ | |
217 | continue; | |
218 | } | |
219 | ||
c940b7a3 | 220 | libusb_get_device_descriptor(devlist[i], &des); |
f2a66a8e C |
221 | |
222 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
223 | ||
224 | prof = NULL; | |
225 | for (j = 0; j < (int)ARRAY_SIZE(dev_profiles); j++) { | |
226 | if (des.idVendor == dev_profiles[j].orig_vid | |
227 | && des.idProduct == dev_profiles[j].orig_pid) { | |
228 | /* Device matches the pre-firmware profile. */ | |
229 | prof = &dev_profiles[j]; | |
230 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
231 | sdi = hantek_6xxx_dev_new(prof); | |
232 | sdi->connection_id = g_strdup(connection_id); | |
233 | devices = g_slist_append(devices, sdi); | |
234 | devc = sdi->priv; | |
235 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
236 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
237 | /* Remember when the firmware on this device was updated. */ | |
238 | devc->fw_updated = g_get_monotonic_time(); | |
239 | else | |
240 | sr_err("Firmware upload failed."); | |
241 | /* Dummy USB address of 0xff will get overwritten later. */ | |
242 | sdi->conn = sr_usb_dev_inst_new( | |
243 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
244 | break; | |
245 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
246 | && des.idProduct == dev_profiles[j].fw_pid) { | |
247 | /* Device matches the post-firmware profile. */ | |
248 | prof = &dev_profiles[j]; | |
249 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
250 | sdi = hantek_6xxx_dev_new(prof); | |
251 | sdi->connection_id = g_strdup(connection_id); | |
252 | sdi->status = SR_ST_INACTIVE; | |
253 | devices = g_slist_append(devices, sdi); | |
254 | sdi->inst_type = SR_INST_USB; | |
255 | sdi->conn = sr_usb_dev_inst_new( | |
256 | libusb_get_bus_number(devlist[i]), | |
257 | libusb_get_device_address(devlist[i]), NULL); | |
258 | break; | |
259 | } | |
260 | } | |
261 | if (!prof) | |
262 | /* Not a supported VID/PID. */ | |
263 | continue; | |
264 | } | |
265 | libusb_free_device_list(devlist, 1); | |
6c6bc80a C |
266 | |
267 | return devices; | |
268 | } | |
269 | ||
270 | static GSList *dev_list(const struct sr_dev_driver *di) | |
271 | { | |
272 | return ((struct drv_context *)(di->context))->instances; | |
273 | } | |
274 | ||
6c6bc80a C |
275 | static int dev_open(struct sr_dev_inst *sdi) |
276 | { | |
f2a66a8e C |
277 | struct dev_context *devc; |
278 | struct sr_usb_dev_inst *usb; | |
279 | int64_t timediff_us, timediff_ms; | |
280 | int err; | |
281 | ||
282 | devc = sdi->priv; | |
283 | usb = sdi->conn; | |
284 | ||
285 | /* | |
286 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
287 | * for the FX2 to renumerate. | |
288 | */ | |
289 | err = SR_ERR; | |
290 | if (devc->fw_updated > 0) { | |
291 | sr_info("Waiting for device to reset."); | |
292 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
293 | g_usleep(300 * 1000); | |
294 | timediff_ms = 0; | |
295 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
296 | if ((err = hantek_6xxx_open(sdi)) == SR_OK) | |
297 | break; | |
298 | g_usleep(100 * 1000); | |
299 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
300 | timediff_ms = timediff_us / 1000; | |
301 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
302 | } | |
303 | if (timediff_ms < MAX_RENUM_DELAY_MS) | |
304 | sr_info("Device came back after %"PRIu64" ms.", timediff_ms); | |
305 | } else { | |
306 | err = hantek_6xxx_open(sdi); | |
307 | } | |
6c6bc80a | 308 | |
f2a66a8e C |
309 | if (err != SR_OK) { |
310 | sr_err("Unable to open device."); | |
311 | return SR_ERR; | |
312 | } | |
6c6bc80a | 313 | |
f2a66a8e C |
314 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); |
315 | if (err != 0) { | |
316 | sr_err("Unable to claim interface: %s.", | |
317 | libusb_error_name(err)); | |
318 | return SR_ERR; | |
319 | } | |
6c6bc80a C |
320 | |
321 | return SR_OK; | |
322 | } | |
323 | ||
324 | static int dev_close(struct sr_dev_inst *sdi) | |
325 | { | |
f2a66a8e | 326 | hantek_6xxx_close(sdi); |
6c6bc80a C |
327 | |
328 | return SR_OK; | |
329 | } | |
330 | ||
331 | static int cleanup(const struct sr_dev_driver *di) | |
332 | { | |
f2a66a8e | 333 | return dev_clear(di); |
6c6bc80a C |
334 | } |
335 | ||
336 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
337 | const struct sr_channel_group *cg) | |
338 | { | |
f2a66a8e C |
339 | struct dev_context *devc; |
340 | struct sr_usb_dev_inst *usb; | |
341 | char str[128]; | |
342 | const uint64_t *vdiv; | |
343 | int ch_idx; | |
6c6bc80a | 344 | |
6c6bc80a | 345 | switch (key) { |
f2a66a8e C |
346 | case SR_CONF_NUM_VDIV: |
347 | *data = g_variant_new_int32(ARRAY_SIZE(vdivs)); | |
348 | break; | |
6c6bc80a C |
349 | } |
350 | ||
f2a66a8e C |
351 | if (!sdi) |
352 | return SR_ERR_ARG; | |
353 | ||
354 | devc = sdi->priv; | |
355 | if (!cg) { | |
356 | switch (key) { | |
357 | case SR_CONF_SAMPLERATE: | |
358 | *data = g_variant_new_uint64(devc->samplerate); | |
359 | break; | |
360 | case SR_CONF_LIMIT_MSEC: | |
361 | *data = g_variant_new_uint64(devc->limit_msec); | |
362 | break; | |
363 | case SR_CONF_LIMIT_SAMPLES: | |
364 | *data = g_variant_new_uint64(devc->limit_samples); | |
365 | break; | |
366 | case SR_CONF_CONN: | |
367 | if (!sdi->conn) | |
368 | return SR_ERR_ARG; | |
369 | usb = sdi->conn; | |
370 | if (usb->address == 255) | |
371 | /* Device still needs to re-enumerate after firmware | |
372 | * upload, so we don't know its (future) address. */ | |
373 | return SR_ERR; | |
374 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
375 | *data = g_variant_new_string(str); | |
376 | break; | |
377 | default: | |
378 | return SR_ERR_NA; | |
379 | } | |
380 | } else { | |
381 | if (sdi->channel_groups->data == cg) | |
382 | ch_idx = 0; | |
383 | else if (sdi->channel_groups->next->data == cg) | |
384 | ch_idx = 1; | |
385 | else | |
386 | return SR_ERR_ARG; | |
387 | switch (key) { | |
388 | case SR_CONF_VDIV: | |
389 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
390 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
391 | break; | |
cc5ebc8a BL |
392 | case SR_CONF_COUPLING: |
393 | *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]); | |
394 | break; | |
f2a66a8e C |
395 | } |
396 | } | |
397 | ||
398 | return SR_OK; | |
6c6bc80a C |
399 | } |
400 | ||
401 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
402 | const struct sr_channel_group *cg) | |
403 | { | |
f2a66a8e C |
404 | struct dev_context *devc; |
405 | uint64_t p, q; | |
406 | int tmp_int, ch_idx, ret; | |
407 | unsigned int i; | |
cc5ebc8a | 408 | const char *tmp_str; |
6c6bc80a C |
409 | |
410 | if (sdi->status != SR_ST_ACTIVE) | |
411 | return SR_ERR_DEV_CLOSED; | |
412 | ||
413 | ret = SR_OK; | |
f2a66a8e C |
414 | devc = sdi->priv; |
415 | if (!cg) { | |
416 | switch (key) { | |
417 | case SR_CONF_SAMPLERATE: | |
418 | devc->samplerate = g_variant_get_uint64(data); | |
419 | hantek_6xxx_update_samplerate(sdi); | |
420 | break; | |
421 | case SR_CONF_LIMIT_MSEC: | |
422 | devc->limit_msec = g_variant_get_uint64(data); | |
423 | break; | |
424 | case SR_CONF_LIMIT_SAMPLES: | |
425 | devc->limit_samples = g_variant_get_uint64(data); | |
426 | break; | |
427 | default: | |
428 | ret = SR_ERR_NA; | |
429 | break; | |
430 | } | |
431 | } else { | |
432 | if (sdi->channel_groups->data == cg) | |
433 | ch_idx = 0; | |
434 | else if (sdi->channel_groups->next->data == cg) | |
435 | ch_idx = 1; | |
436 | else | |
437 | return SR_ERR_ARG; | |
438 | switch (key) { | |
439 | case SR_CONF_VDIV: | |
440 | g_variant_get(data, "(tt)", &p, &q); | |
441 | tmp_int = -1; | |
442 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
443 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
444 | tmp_int = i; | |
445 | break; | |
446 | } | |
447 | } | |
448 | if (tmp_int >= 0) { | |
449 | devc->voltage[ch_idx] = tmp_int; | |
450 | hantek_6xxx_update_vdiv(sdi); | |
451 | } else | |
452 | ret = SR_ERR_ARG; | |
453 | break; | |
cc5ebc8a BL |
454 | case SR_CONF_COUPLING: |
455 | tmp_str = g_variant_get_string(data, NULL); | |
456 | for (i = 0; coupling[i]; i++) { | |
457 | if (!strcmp(tmp_str, coupling[i])) { | |
458 | devc->coupling[ch_idx] = i; | |
459 | break; | |
460 | } | |
461 | } | |
462 | if (coupling[i] == 0) | |
463 | ret = SR_ERR_ARG; | |
464 | break; | |
f2a66a8e C |
465 | default: |
466 | ret = SR_ERR_NA; | |
467 | break; | |
468 | } | |
6c6bc80a C |
469 | } |
470 | ||
471 | return ret; | |
472 | } | |
473 | ||
474 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
475 | const struct sr_channel_group *cg) | |
476 | { | |
f2a66a8e C |
477 | GVariant *tuple, *rational[2]; |
478 | GVariantBuilder gvb; | |
479 | unsigned int i; | |
480 | GVariant *gvar; | |
481 | ||
482 | if (key == SR_CONF_SCAN_OPTIONS) { | |
483 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
484 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
485 | return SR_OK; | |
486 | } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
487 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
488 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
489 | return SR_OK; | |
490 | } | |
6c6bc80a | 491 | |
f2a66a8e C |
492 | if (!sdi) |
493 | return SR_ERR_ARG; | |
494 | ||
495 | if (!cg) { | |
496 | switch (key) { | |
497 | case SR_CONF_DEVICE_OPTIONS: | |
498 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
499 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
500 | break; | |
501 | case SR_CONF_SAMPLERATE: | |
502 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
503 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
504 | samplerates, ARRAY_SIZE(samplerates), | |
505 | sizeof(uint64_t)); | |
506 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
507 | *data = g_variant_builder_end(&gvb); | |
508 | break; | |
509 | default: | |
510 | return SR_ERR_NA; | |
511 | } | |
512 | } else { | |
513 | switch (key) { | |
514 | case SR_CONF_DEVICE_OPTIONS: | |
515 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
516 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t)); | |
517 | break; | |
cc5ebc8a BL |
518 | case SR_CONF_COUPLING: |
519 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
520 | break; | |
f2a66a8e C |
521 | case SR_CONF_VDIV: |
522 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
523 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
524 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
525 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
526 | tuple = g_variant_new_tuple(rational, 2); | |
527 | g_variant_builder_add_value(&gvb, tuple); | |
528 | } | |
529 | *data = g_variant_builder_end(&gvb); | |
530 | break; | |
531 | default: | |
532 | return SR_ERR_NA; | |
533 | } | |
534 | } | |
6c6bc80a | 535 | |
f2a66a8e C |
536 | return SR_OK; |
537 | } | |
538 | ||
539 | /* Minimise data amount for limit_samples and limit_msec limits. */ | |
540 | static uint32_t data_amount(const struct sr_dev_inst *sdi) | |
541 | { | |
542 | struct dev_context *devc = sdi->priv; | |
543 | uint32_t data_left; | |
544 | int32_t time_left; | |
545 | ||
546 | if (devc->limit_msec) { | |
547 | time_left = devc->limit_msec - (g_get_monotonic_time() - devc->aq_started) / 1000; | |
548 | data_left = devc->samplerate * MAX(time_left, 0) * NUM_CHANNELS / 1000; | |
549 | } else if (devc->limit_samples) { | |
550 | data_left = (devc->limit_samples - devc->samp_received) * NUM_CHANNELS; | |
551 | } else { | |
552 | data_left = devc->samplerate * NUM_CHANNELS; | |
553 | } | |
554 | ||
555 | data_left += MIN_PACKET_SIZE; /* Driver does not handle small buffers. */ | |
556 | ||
557 | sr_spew("data_amount %u", data_left); | |
558 | ||
559 | return data_left; | |
560 | } | |
561 | ||
562 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
563 | int num_samples) | |
564 | { | |
565 | struct sr_datafeed_packet packet; | |
566 | struct sr_datafeed_analog_old analog; | |
567 | struct dev_context *devc = sdi->priv; | |
568 | int num_channels, data_offset, i; | |
569 | ||
570 | const float ch1_bit = RANGE(0) / 255; | |
571 | const float ch2_bit = RANGE(1) / 255; | |
572 | const float ch1_center = RANGE(0) / 2; | |
573 | const float ch2_center = RANGE(1) / 2; | |
574 | ||
575 | const gboolean ch1_ena = !!devc->ch_enabled[0]; | |
576 | const gboolean ch2_ena = !!devc->ch_enabled[1]; | |
577 | ||
578 | num_channels = (ch1_ena && ch2_ena) ? 2 : 1; | |
579 | packet.type = SR_DF_ANALOG_OLD; | |
580 | packet.payload = &analog; | |
581 | ||
582 | analog.channels = devc->enabled_channels; | |
583 | analog.num_samples = num_samples; | |
584 | analog.mq = SR_MQ_VOLTAGE; | |
585 | analog.unit = SR_UNIT_VOLT; | |
586 | analog.mqflags = 0; | |
587 | ||
588 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels); | |
589 | if (!analog.data) { | |
590 | sr_err("Analog data buffer malloc failed."); | |
591 | devc->dev_state = STOPPING; | |
592 | return; | |
593 | } | |
594 | ||
595 | data_offset = 0; | |
596 | for (i = 0; i < num_samples; i++) { | |
597 | /* | |
598 | * The device always sends data for both channels. If a channel | |
599 | * is disabled, it contains a copy of the enabled channel's | |
600 | * data. However, we only send the requested channels to | |
601 | * the bus. | |
602 | * | |
603 | * Voltage values are encoded as a value 0-255, where the | |
604 | * value is a point in the range represented by the vdiv | |
605 | * setting. There are 10 vertical divs, so e.g. 500mV/div | |
606 | * represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V. | |
607 | */ | |
608 | if (ch1_ena) | |
609 | analog.data[data_offset++] = (ch1_bit * *(buf + i * 2) - ch1_center); | |
610 | if (ch2_ena) | |
611 | analog.data[data_offset++] = (ch2_bit * *(buf + i * 2 + 1) - ch2_center); | |
612 | } | |
613 | ||
614 | sr_session_send(devc->cb_data, &packet); | |
615 | g_free(analog.data); | |
616 | } | |
617 | ||
618 | static void send_data(struct sr_dev_inst *sdi, struct libusb_transfer *buf[], uint64_t samples) | |
619 | { | |
620 | int i = 0; | |
621 | uint64_t send = 0; | |
622 | uint32_t chunk; | |
623 | ||
624 | while (send < samples) { | |
625 | chunk = MIN(samples - send, (uint64_t)(buf[i]->actual_length / NUM_CHANNELS)); | |
626 | send += chunk; | |
627 | send_chunk(sdi, buf[i]->buffer, chunk); | |
628 | ||
629 | /* | |
630 | * Everything in this transfer was either copied to the buffer | |
631 | * or sent to the session bus. | |
632 | */ | |
633 | g_free(buf[i]->buffer); | |
634 | libusb_free_transfer(buf[i]); | |
635 | i++; | |
636 | } | |
637 | } | |
638 | ||
639 | /* | |
640 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
641 | * Only channel data comes in asynchronously, and all transfers for this are | |
642 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
643 | * the libsigrok session bus. | |
644 | */ | |
645 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
646 | { | |
647 | struct sr_dev_inst *sdi; | |
648 | struct dev_context *devc; | |
649 | ||
650 | sdi = transfer->user_data; | |
651 | devc = sdi->priv; | |
652 | ||
653 | if (devc->dev_state == FLUSH) { | |
5954e716 BL |
654 | g_free(transfer->buffer); |
655 | libusb_free_transfer(transfer); | |
f2a66a8e C |
656 | devc->dev_state = CAPTURE; |
657 | devc->aq_started = g_get_monotonic_time(); | |
658 | read_channel(sdi, data_amount(sdi)); | |
659 | return; | |
660 | } | |
661 | ||
662 | if (devc->dev_state != CAPTURE) | |
663 | return; | |
664 | ||
665 | if (!devc->sample_buf) { | |
666 | devc->sample_buf_size = 10; | |
667 | devc->sample_buf = g_try_malloc(devc->sample_buf_size * sizeof(transfer)); | |
668 | devc->sample_buf_write = 0; | |
669 | } | |
670 | ||
671 | if (devc->sample_buf_write >= devc->sample_buf_size) { | |
672 | devc->sample_buf_size += 10; | |
673 | devc->sample_buf = g_try_realloc(devc->sample_buf, | |
674 | devc->sample_buf_size * sizeof(transfer)); | |
675 | if (!devc->sample_buf) { | |
676 | sr_err("Sample buffer malloc failed."); | |
677 | devc->dev_state = STOPPING; | |
678 | return; | |
679 | } | |
6c6bc80a C |
680 | } |
681 | ||
f2a66a8e | 682 | devc->sample_buf[devc->sample_buf_write++] = transfer; |
10e0d374 | 683 | devc->samp_received += transfer->actual_length / NUM_CHANNELS; |
f2a66a8e C |
684 | |
685 | sr_spew("receive_transfer(): calculated samplerate == %" PRIu64 "ks/s", | |
686 | (uint64_t)(transfer->actual_length * 1000 / | |
687 | (g_get_monotonic_time() - devc->read_start_ts + 1) / | |
688 | NUM_CHANNELS)); | |
689 | ||
690 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
691 | libusb_error_name(transfer->status), transfer->actual_length); | |
692 | ||
693 | if (transfer->actual_length == 0) | |
694 | /* Nothing to send to the bus. */ | |
695 | return; | |
696 | ||
697 | if (devc->limit_samples && devc->samp_received >= devc->limit_samples) { | |
698 | sr_info("Requested number of samples reached, stopping. %" | |
699 | PRIu64 " <= %" PRIu64, devc->limit_samples, | |
700 | devc->samp_received); | |
701 | send_data(sdi, devc->sample_buf, devc->limit_samples); | |
702 | sdi->driver->dev_acquisition_stop(sdi, NULL); | |
703 | } else if (devc->limit_msec && (g_get_monotonic_time() - | |
704 | devc->aq_started) / 1000 >= devc->limit_msec) { | |
705 | sr_info("Requested time limit reached, stopping. %d <= %d", | |
706 | (uint32_t)devc->limit_msec, | |
707 | (uint32_t)(g_get_monotonic_time() - devc->aq_started) / 1000); | |
708 | send_data(sdi, devc->sample_buf, devc->samp_received); | |
709 | g_free(devc->sample_buf); | |
710 | devc->sample_buf = NULL; | |
711 | sdi->driver->dev_acquisition_stop(sdi, NULL); | |
712 | } else { | |
713 | read_channel(sdi, data_amount(sdi)); | |
714 | } | |
715 | } | |
716 | ||
717 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount) | |
718 | { | |
719 | int ret; | |
720 | struct dev_context *devc; | |
721 | ||
722 | devc = sdi->priv; | |
723 | ||
724 | amount = MIN(amount, MAX_PACKET_SIZE); | |
725 | ret = hantek_6xxx_get_channeldata(sdi, receive_transfer, amount); | |
726 | devc->read_start_ts = g_get_monotonic_time(); | |
727 | devc->read_data_amount = amount; | |
728 | ||
6c6bc80a C |
729 | return ret; |
730 | } | |
731 | ||
f2a66a8e | 732 | static int handle_event(int fd, int revents, void *cb_data) |
6c6bc80a | 733 | { |
f2a66a8e | 734 | const struct sr_dev_inst *sdi; |
f2a66a8e C |
735 | struct timeval tv; |
736 | struct sr_dev_driver *di; | |
737 | struct dev_context *devc; | |
738 | struct drv_context *drvc; | |
739 | ||
740 | (void)fd; | |
741 | (void)revents; | |
742 | ||
743 | sdi = cb_data; | |
744 | di = sdi->driver; | |
745 | drvc = di->context; | |
746 | devc = sdi->priv; | |
747 | ||
748 | /* Always handle pending libusb events. */ | |
749 | tv.tv_sec = tv.tv_usec = 0; | |
750 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
751 | ||
752 | if (devc->dev_state == STOPPING) { | |
753 | /* We've been told to wind up the acquisition. */ | |
754 | sr_dbg("Stopping acquisition."); | |
755 | ||
756 | hantek_6xxx_stop_data_collecting(sdi); | |
757 | /* | |
758 | * TODO: Doesn't really cancel pending transfers so they might | |
759 | * come in after SR_DF_END is sent. | |
760 | */ | |
761 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
762 | ||
3be42bc2 | 763 | std_session_send_df_end(sdi, LOG_PREFIX); |
f2a66a8e C |
764 | |
765 | devc->dev_state = IDLE; | |
766 | ||
767 | return TRUE; | |
768 | } | |
769 | ||
770 | return TRUE; | |
771 | } | |
772 | ||
773 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
774 | { | |
775 | struct dev_context *devc; | |
776 | struct sr_dev_driver *di = sdi->driver; | |
777 | struct drv_context *drvc = di->context; | |
6c6bc80a C |
778 | |
779 | if (sdi->status != SR_ST_ACTIVE) | |
780 | return SR_ERR_DEV_CLOSED; | |
781 | ||
f2a66a8e C |
782 | devc = sdi->priv; |
783 | devc->cb_data = cb_data; | |
784 | ||
785 | if (configure_channels(sdi) != SR_OK) { | |
786 | sr_err("Failed to configure channels."); | |
787 | return SR_ERR; | |
788 | } | |
789 | ||
790 | if (hantek_6xxx_init(sdi) != SR_OK) | |
791 | return SR_ERR; | |
792 | ||
f2a66a8e C |
793 | std_session_send_df_header(cb_data, LOG_PREFIX); |
794 | ||
795 | devc->samp_received = 0; | |
796 | devc->dev_state = FLUSH; | |
797 | ||
798 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, | |
799 | handle_event, (void *)sdi); | |
800 | ||
801 | hantek_6xxx_start_data_collecting(sdi); | |
802 | ||
803 | read_channel(sdi, FLUSH_PACKET_SIZE); | |
6c6bc80a C |
804 | |
805 | return SR_OK; | |
806 | } | |
807 | ||
808 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
809 | { | |
f2a66a8e C |
810 | struct dev_context *devc; |
811 | ||
6c6bc80a C |
812 | (void)cb_data; |
813 | ||
814 | if (sdi->status != SR_ST_ACTIVE) | |
f2a66a8e C |
815 | return SR_ERR; |
816 | ||
817 | devc = sdi->priv; | |
818 | devc->dev_state = STOPPING; | |
6c6bc80a | 819 | |
f2a66a8e | 820 | g_free(devc->sample_buf); devc->sample_buf = NULL; |
6c6bc80a C |
821 | |
822 | return SR_OK; | |
823 | } | |
824 | ||
825 | SR_PRIV struct sr_dev_driver hantek_6xxx_driver_info = { | |
826 | .name = "hantek-6xxx", | |
827 | .longname = "Hantek 6xxx", | |
828 | .api_version = 1, | |
829 | .init = init, | |
830 | .cleanup = cleanup, | |
831 | .scan = scan, | |
832 | .dev_list = dev_list, | |
833 | .dev_clear = dev_clear, | |
834 | .config_get = config_get, | |
835 | .config_set = config_set, | |
836 | .config_list = config_list, | |
837 | .dev_open = dev_open, | |
838 | .dev_close = dev_close, | |
839 | .dev_acquisition_start = dev_acquisition_start, | |
840 | .dev_acquisition_stop = dev_acquisition_stop, | |
841 | .context = NULL, | |
842 | }; |