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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, | |
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 | ||
f2a66a8e C |
77 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount); |
78 | ||
695dc859 | 79 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
f2a66a8e | 80 | |
15a5bfe4 | 81 | static struct sr_dev_inst *hantek_6xxx_dev_new(const struct hantek_6xxx_profile *prof) |
f2a66a8e C |
82 | { |
83 | struct sr_dev_inst *sdi; | |
84 | struct sr_channel *ch; | |
85 | struct sr_channel_group *cg; | |
f2a66a8e C |
86 | struct dev_context *devc; |
87 | unsigned int i; | |
88 | ||
89 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
90 | sdi->status = SR_ST_INITIALIZING; | |
91 | sdi->vendor = g_strdup(prof->vendor); | |
92 | sdi->model = g_strdup(prof->model); | |
f2a66a8e C |
93 | |
94 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
95 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
96 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
97 | cg->name = g_strdup(channel_names[i]); | |
98 | cg->channels = g_slist_append(cg->channels, ch); | |
99 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
100 | } | |
101 | ||
102 | devc = g_malloc0(sizeof(struct dev_context)); | |
103 | ||
104 | for (i = 0; i < NUM_CHANNELS; i++) { | |
105 | devc->ch_enabled[i] = TRUE; | |
106 | devc->voltage[i] = DEFAULT_VOLTAGE; | |
cc5ebc8a | 107 | devc->coupling[i] = DEFAULT_COUPLING; |
f2a66a8e C |
108 | } |
109 | ||
110 | devc->sample_buf = NULL; | |
111 | devc->sample_buf_write = 0; | |
112 | devc->sample_buf_size = 0; | |
113 | ||
114 | devc->profile = prof; | |
115 | devc->dev_state = IDLE; | |
116 | devc->samplerate = DEFAULT_SAMPLERATE; | |
117 | ||
118 | sdi->priv = devc; | |
f2a66a8e C |
119 | |
120 | return sdi; | |
121 | } | |
122 | ||
123 | static int configure_channels(const struct sr_dev_inst *sdi) | |
124 | { | |
125 | struct dev_context *devc; | |
126 | const GSList *l; | |
127 | int p; | |
128 | struct sr_channel *ch; | |
129 | devc = sdi->priv; | |
130 | ||
131 | g_slist_free(devc->enabled_channels); | |
132 | devc->enabled_channels = NULL; | |
133 | memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled)); | |
134 | ||
135 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
136 | ch = l->data; | |
137 | if (p < NUM_CHANNELS) { | |
138 | devc->ch_enabled[p] = ch->enabled; | |
139 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
140 | } | |
141 | } | |
142 | ||
143 | return SR_OK; | |
144 | } | |
145 | ||
146 | static void clear_dev_context(void *priv) | |
147 | { | |
148 | struct dev_context *devc; | |
149 | ||
150 | devc = priv; | |
151 | g_slist_free(devc->enabled_channels); | |
5954e716 | 152 | g_free(devc); |
f2a66a8e C |
153 | } |
154 | ||
155 | static int dev_clear(const struct sr_dev_driver *di) | |
156 | { | |
157 | return std_dev_clear(di, clear_dev_context); | |
158 | } | |
159 | ||
6c6bc80a C |
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); | |
15a5bfe4 | 220 | sdi = hantek_6xxx_dev_new(prof); |
f2a66a8e C |
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); | |
15a5bfe4 | 239 | sdi = hantek_6xxx_dev_new(prof); |
f2a66a8e C |
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 | 255 | |
15a5bfe4 | 256 | return std_scan_complete(di, devices); |
6c6bc80a C |
257 | } |
258 | ||
6c6bc80a C |
259 | static int dev_open(struct sr_dev_inst *sdi) |
260 | { | |
f2a66a8e C |
261 | struct dev_context *devc; |
262 | struct sr_usb_dev_inst *usb; | |
263 | int64_t timediff_us, timediff_ms; | |
264 | int err; | |
265 | ||
266 | devc = sdi->priv; | |
267 | usb = sdi->conn; | |
268 | ||
269 | /* | |
270 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
271 | * for the FX2 to renumerate. | |
272 | */ | |
273 | err = SR_ERR; | |
274 | if (devc->fw_updated > 0) { | |
275 | sr_info("Waiting for device to reset."); | |
276 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
277 | g_usleep(300 * 1000); | |
278 | timediff_ms = 0; | |
279 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
280 | if ((err = hantek_6xxx_open(sdi)) == SR_OK) | |
281 | break; | |
282 | g_usleep(100 * 1000); | |
283 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
284 | timediff_ms = timediff_us / 1000; | |
285 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
286 | } | |
287 | if (timediff_ms < MAX_RENUM_DELAY_MS) | |
288 | sr_info("Device came back after %"PRIu64" ms.", timediff_ms); | |
289 | } else { | |
290 | err = hantek_6xxx_open(sdi); | |
291 | } | |
6c6bc80a | 292 | |
f2a66a8e C |
293 | if (err != SR_OK) { |
294 | sr_err("Unable to open device."); | |
295 | return SR_ERR; | |
296 | } | |
6c6bc80a | 297 | |
f2a66a8e C |
298 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); |
299 | if (err != 0) { | |
300 | sr_err("Unable to claim interface: %s.", | |
301 | libusb_error_name(err)); | |
302 | return SR_ERR; | |
303 | } | |
6c6bc80a C |
304 | |
305 | return SR_OK; | |
306 | } | |
307 | ||
308 | static int dev_close(struct sr_dev_inst *sdi) | |
309 | { | |
f2a66a8e | 310 | hantek_6xxx_close(sdi); |
6c6bc80a C |
311 | |
312 | return SR_OK; | |
313 | } | |
314 | ||
6c6bc80a C |
315 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
316 | const struct sr_channel_group *cg) | |
317 | { | |
f2a66a8e C |
318 | struct dev_context *devc; |
319 | struct sr_usb_dev_inst *usb; | |
320 | char str[128]; | |
321 | const uint64_t *vdiv; | |
322 | int ch_idx; | |
6c6bc80a | 323 | |
6c6bc80a | 324 | switch (key) { |
f2a66a8e C |
325 | case SR_CONF_NUM_VDIV: |
326 | *data = g_variant_new_int32(ARRAY_SIZE(vdivs)); | |
327 | break; | |
6c6bc80a C |
328 | } |
329 | ||
f2a66a8e C |
330 | if (!sdi) |
331 | return SR_ERR_ARG; | |
332 | ||
333 | devc = sdi->priv; | |
334 | if (!cg) { | |
335 | switch (key) { | |
336 | case SR_CONF_SAMPLERATE: | |
337 | *data = g_variant_new_uint64(devc->samplerate); | |
338 | break; | |
339 | case SR_CONF_LIMIT_MSEC: | |
340 | *data = g_variant_new_uint64(devc->limit_msec); | |
341 | break; | |
342 | case SR_CONF_LIMIT_SAMPLES: | |
343 | *data = g_variant_new_uint64(devc->limit_samples); | |
344 | break; | |
345 | case SR_CONF_CONN: | |
346 | if (!sdi->conn) | |
347 | return SR_ERR_ARG; | |
348 | usb = sdi->conn; | |
349 | if (usb->address == 255) | |
350 | /* Device still needs to re-enumerate after firmware | |
351 | * upload, so we don't know its (future) address. */ | |
352 | return SR_ERR; | |
353 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
354 | *data = g_variant_new_string(str); | |
355 | break; | |
356 | default: | |
357 | return SR_ERR_NA; | |
358 | } | |
359 | } else { | |
360 | if (sdi->channel_groups->data == cg) | |
361 | ch_idx = 0; | |
362 | else if (sdi->channel_groups->next->data == cg) | |
363 | ch_idx = 1; | |
364 | else | |
365 | return SR_ERR_ARG; | |
366 | switch (key) { | |
367 | case SR_CONF_VDIV: | |
368 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
369 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
370 | break; | |
cc5ebc8a BL |
371 | case SR_CONF_COUPLING: |
372 | *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]); | |
373 | break; | |
f2a66a8e C |
374 | } |
375 | } | |
376 | ||
377 | return SR_OK; | |
6c6bc80a C |
378 | } |
379 | ||
380 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
381 | const struct sr_channel_group *cg) | |
382 | { | |
f2a66a8e C |
383 | struct dev_context *devc; |
384 | uint64_t p, q; | |
385 | int tmp_int, ch_idx, ret; | |
386 | unsigned int i; | |
cc5ebc8a | 387 | const char *tmp_str; |
6c6bc80a C |
388 | |
389 | if (sdi->status != SR_ST_ACTIVE) | |
390 | return SR_ERR_DEV_CLOSED; | |
391 | ||
392 | ret = SR_OK; | |
f2a66a8e C |
393 | devc = sdi->priv; |
394 | if (!cg) { | |
395 | switch (key) { | |
396 | case SR_CONF_SAMPLERATE: | |
397 | devc->samplerate = g_variant_get_uint64(data); | |
398 | hantek_6xxx_update_samplerate(sdi); | |
399 | break; | |
400 | case SR_CONF_LIMIT_MSEC: | |
401 | devc->limit_msec = g_variant_get_uint64(data); | |
402 | break; | |
403 | case SR_CONF_LIMIT_SAMPLES: | |
404 | devc->limit_samples = g_variant_get_uint64(data); | |
405 | break; | |
406 | default: | |
407 | ret = SR_ERR_NA; | |
408 | break; | |
409 | } | |
410 | } else { | |
411 | if (sdi->channel_groups->data == cg) | |
412 | ch_idx = 0; | |
413 | else if (sdi->channel_groups->next->data == cg) | |
414 | ch_idx = 1; | |
415 | else | |
416 | return SR_ERR_ARG; | |
417 | switch (key) { | |
418 | case SR_CONF_VDIV: | |
419 | g_variant_get(data, "(tt)", &p, &q); | |
420 | tmp_int = -1; | |
421 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
422 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
423 | tmp_int = i; | |
424 | break; | |
425 | } | |
426 | } | |
427 | if (tmp_int >= 0) { | |
428 | devc->voltage[ch_idx] = tmp_int; | |
429 | hantek_6xxx_update_vdiv(sdi); | |
430 | } else | |
431 | ret = SR_ERR_ARG; | |
432 | break; | |
cc5ebc8a BL |
433 | case SR_CONF_COUPLING: |
434 | tmp_str = g_variant_get_string(data, NULL); | |
435 | for (i = 0; coupling[i]; i++) { | |
436 | if (!strcmp(tmp_str, coupling[i])) { | |
437 | devc->coupling[ch_idx] = i; | |
438 | break; | |
439 | } | |
440 | } | |
441 | if (coupling[i] == 0) | |
442 | ret = SR_ERR_ARG; | |
443 | break; | |
f2a66a8e C |
444 | default: |
445 | ret = SR_ERR_NA; | |
446 | break; | |
447 | } | |
6c6bc80a C |
448 | } |
449 | ||
450 | return ret; | |
451 | } | |
452 | ||
453 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
454 | const struct sr_channel_group *cg) | |
455 | { | |
f2a66a8e C |
456 | GVariant *tuple, *rational[2]; |
457 | GVariantBuilder gvb; | |
458 | unsigned int i; | |
459 | GVariant *gvar; | |
460 | ||
461 | if (key == SR_CONF_SCAN_OPTIONS) { | |
462 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
463 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
464 | return SR_OK; | |
465 | } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
466 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
467 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
468 | return SR_OK; | |
469 | } | |
6c6bc80a | 470 | |
f2a66a8e C |
471 | if (!sdi) |
472 | return SR_ERR_ARG; | |
473 | ||
474 | if (!cg) { | |
475 | switch (key) { | |
476 | case SR_CONF_DEVICE_OPTIONS: | |
477 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
478 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
479 | break; | |
480 | case SR_CONF_SAMPLERATE: | |
481 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
482 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
483 | samplerates, ARRAY_SIZE(samplerates), | |
484 | sizeof(uint64_t)); | |
485 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
486 | *data = g_variant_builder_end(&gvb); | |
487 | break; | |
488 | default: | |
489 | return SR_ERR_NA; | |
490 | } | |
491 | } else { | |
492 | switch (key) { | |
493 | case SR_CONF_DEVICE_OPTIONS: | |
494 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
495 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t)); | |
496 | break; | |
cc5ebc8a BL |
497 | case SR_CONF_COUPLING: |
498 | *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling)); | |
499 | break; | |
f2a66a8e C |
500 | case SR_CONF_VDIV: |
501 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
502 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
503 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
504 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
505 | tuple = g_variant_new_tuple(rational, 2); | |
506 | g_variant_builder_add_value(&gvb, tuple); | |
507 | } | |
508 | *data = g_variant_builder_end(&gvb); | |
509 | break; | |
510 | default: | |
511 | return SR_ERR_NA; | |
512 | } | |
513 | } | |
6c6bc80a | 514 | |
f2a66a8e C |
515 | return SR_OK; |
516 | } | |
517 | ||
518 | /* Minimise data amount for limit_samples and limit_msec limits. */ | |
519 | static uint32_t data_amount(const struct sr_dev_inst *sdi) | |
520 | { | |
521 | struct dev_context *devc = sdi->priv; | |
af7f8824 | 522 | uint32_t data_left, data_left_2, i; |
f2a66a8e C |
523 | int32_t time_left; |
524 | ||
525 | if (devc->limit_msec) { | |
526 | time_left = devc->limit_msec - (g_get_monotonic_time() - devc->aq_started) / 1000; | |
527 | data_left = devc->samplerate * MAX(time_left, 0) * NUM_CHANNELS / 1000; | |
528 | } else if (devc->limit_samples) { | |
529 | data_left = (devc->limit_samples - devc->samp_received) * NUM_CHANNELS; | |
530 | } else { | |
531 | data_left = devc->samplerate * NUM_CHANNELS; | |
532 | } | |
533 | ||
af7f8824 UH |
534 | /* Round up to nearest power of two. */ |
535 | for (i = MIN_PACKET_SIZE; i < data_left; i *= 2) | |
536 | ; | |
537 | data_left_2 = i; | |
f2a66a8e | 538 | |
af7f8824 | 539 | sr_spew("data_amount: %u (rounded to power of 2: %u)", data_left, data_left_2); |
f2a66a8e | 540 | |
af7f8824 | 541 | return data_left_2; |
f2a66a8e C |
542 | } |
543 | ||
544 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
545 | int num_samples) | |
546 | { | |
547 | struct sr_datafeed_packet packet; | |
2938c9d1 UH |
548 | struct sr_datafeed_analog analog; |
549 | struct sr_analog_encoding encoding; | |
550 | struct sr_analog_meaning meaning; | |
551 | struct sr_analog_spec spec; | |
f2a66a8e C |
552 | struct dev_context *devc = sdi->priv; |
553 | int num_channels, data_offset, i; | |
554 | ||
555 | const float ch1_bit = RANGE(0) / 255; | |
556 | const float ch2_bit = RANGE(1) / 255; | |
557 | const float ch1_center = RANGE(0) / 2; | |
558 | const float ch2_center = RANGE(1) / 2; | |
559 | ||
560 | const gboolean ch1_ena = !!devc->ch_enabled[0]; | |
561 | const gboolean ch2_ena = !!devc->ch_enabled[1]; | |
562 | ||
2938c9d1 UH |
563 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); |
564 | ||
f2a66a8e | 565 | num_channels = (ch1_ena && ch2_ena) ? 2 : 1; |
2938c9d1 | 566 | packet.type = SR_DF_ANALOG; |
f2a66a8e C |
567 | packet.payload = &analog; |
568 | ||
2938c9d1 | 569 | analog.meaning->channels = devc->enabled_channels; |
f2a66a8e | 570 | analog.num_samples = num_samples; |
2938c9d1 UH |
571 | analog.meaning->mq = SR_MQ_VOLTAGE; |
572 | analog.meaning->unit = SR_UNIT_VOLT; | |
573 | analog.meaning->mqflags = 0; | |
f2a66a8e C |
574 | |
575 | analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels); | |
576 | if (!analog.data) { | |
577 | sr_err("Analog data buffer malloc failed."); | |
578 | devc->dev_state = STOPPING; | |
579 | return; | |
580 | } | |
581 | ||
582 | data_offset = 0; | |
583 | for (i = 0; i < num_samples; i++) { | |
584 | /* | |
585 | * The device always sends data for both channels. If a channel | |
586 | * is disabled, it contains a copy of the enabled channel's | |
587 | * data. However, we only send the requested channels to | |
588 | * the bus. | |
589 | * | |
590 | * Voltage values are encoded as a value 0-255, where the | |
591 | * value is a point in the range represented by the vdiv | |
592 | * setting. There are 10 vertical divs, so e.g. 500mV/div | |
593 | * represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V. | |
594 | */ | |
595 | if (ch1_ena) | |
2938c9d1 | 596 | ((float *)analog.data)[data_offset++] = (ch1_bit * *(buf + i * 2) - ch1_center); |
f2a66a8e | 597 | if (ch2_ena) |
2938c9d1 | 598 | ((float *)analog.data)[data_offset++] = (ch2_bit * *(buf + i * 2 + 1) - ch2_center); |
f2a66a8e C |
599 | } |
600 | ||
695dc859 | 601 | sr_session_send(sdi, &packet); |
f2a66a8e C |
602 | g_free(analog.data); |
603 | } | |
604 | ||
605 | static void send_data(struct sr_dev_inst *sdi, struct libusb_transfer *buf[], uint64_t samples) | |
606 | { | |
607 | int i = 0; | |
608 | uint64_t send = 0; | |
609 | uint32_t chunk; | |
610 | ||
611 | while (send < samples) { | |
612 | chunk = MIN(samples - send, (uint64_t)(buf[i]->actual_length / NUM_CHANNELS)); | |
613 | send += chunk; | |
614 | send_chunk(sdi, buf[i]->buffer, chunk); | |
615 | ||
616 | /* | |
617 | * Everything in this transfer was either copied to the buffer | |
618 | * or sent to the session bus. | |
619 | */ | |
620 | g_free(buf[i]->buffer); | |
621 | libusb_free_transfer(buf[i]); | |
622 | i++; | |
623 | } | |
624 | } | |
625 | ||
626 | /* | |
627 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
628 | * Only channel data comes in asynchronously, and all transfers for this are | |
629 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
630 | * the libsigrok session bus. | |
631 | */ | |
632 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
633 | { | |
634 | struct sr_dev_inst *sdi; | |
635 | struct dev_context *devc; | |
636 | ||
637 | sdi = transfer->user_data; | |
638 | devc = sdi->priv; | |
639 | ||
640 | if (devc->dev_state == FLUSH) { | |
5954e716 BL |
641 | g_free(transfer->buffer); |
642 | libusb_free_transfer(transfer); | |
f2a66a8e C |
643 | devc->dev_state = CAPTURE; |
644 | devc->aq_started = g_get_monotonic_time(); | |
645 | read_channel(sdi, data_amount(sdi)); | |
646 | return; | |
647 | } | |
648 | ||
649 | if (devc->dev_state != CAPTURE) | |
650 | return; | |
651 | ||
652 | if (!devc->sample_buf) { | |
653 | devc->sample_buf_size = 10; | |
654 | devc->sample_buf = g_try_malloc(devc->sample_buf_size * sizeof(transfer)); | |
655 | devc->sample_buf_write = 0; | |
656 | } | |
657 | ||
658 | if (devc->sample_buf_write >= devc->sample_buf_size) { | |
659 | devc->sample_buf_size += 10; | |
660 | devc->sample_buf = g_try_realloc(devc->sample_buf, | |
661 | devc->sample_buf_size * sizeof(transfer)); | |
662 | if (!devc->sample_buf) { | |
663 | sr_err("Sample buffer malloc failed."); | |
664 | devc->dev_state = STOPPING; | |
665 | return; | |
666 | } | |
6c6bc80a C |
667 | } |
668 | ||
f2a66a8e | 669 | devc->sample_buf[devc->sample_buf_write++] = transfer; |
10e0d374 | 670 | devc->samp_received += transfer->actual_length / NUM_CHANNELS; |
f2a66a8e C |
671 | |
672 | sr_spew("receive_transfer(): calculated samplerate == %" PRIu64 "ks/s", | |
673 | (uint64_t)(transfer->actual_length * 1000 / | |
674 | (g_get_monotonic_time() - devc->read_start_ts + 1) / | |
675 | NUM_CHANNELS)); | |
676 | ||
677 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
678 | libusb_error_name(transfer->status), transfer->actual_length); | |
679 | ||
680 | if (transfer->actual_length == 0) | |
681 | /* Nothing to send to the bus. */ | |
682 | return; | |
683 | ||
684 | if (devc->limit_samples && devc->samp_received >= devc->limit_samples) { | |
685 | sr_info("Requested number of samples reached, stopping. %" | |
686 | PRIu64 " <= %" PRIu64, devc->limit_samples, | |
687 | devc->samp_received); | |
688 | send_data(sdi, devc->sample_buf, devc->limit_samples); | |
695dc859 | 689 | sdi->driver->dev_acquisition_stop(sdi); |
f2a66a8e C |
690 | } else if (devc->limit_msec && (g_get_monotonic_time() - |
691 | devc->aq_started) / 1000 >= devc->limit_msec) { | |
692 | sr_info("Requested time limit reached, stopping. %d <= %d", | |
693 | (uint32_t)devc->limit_msec, | |
694 | (uint32_t)(g_get_monotonic_time() - devc->aq_started) / 1000); | |
695 | send_data(sdi, devc->sample_buf, devc->samp_received); | |
696 | g_free(devc->sample_buf); | |
697 | devc->sample_buf = NULL; | |
695dc859 | 698 | sdi->driver->dev_acquisition_stop(sdi); |
f2a66a8e C |
699 | } else { |
700 | read_channel(sdi, data_amount(sdi)); | |
701 | } | |
702 | } | |
703 | ||
704 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount) | |
705 | { | |
706 | int ret; | |
707 | struct dev_context *devc; | |
708 | ||
709 | devc = sdi->priv; | |
710 | ||
711 | amount = MIN(amount, MAX_PACKET_SIZE); | |
712 | ret = hantek_6xxx_get_channeldata(sdi, receive_transfer, amount); | |
713 | devc->read_start_ts = g_get_monotonic_time(); | |
714 | devc->read_data_amount = amount; | |
715 | ||
6c6bc80a C |
716 | return ret; |
717 | } | |
718 | ||
f2a66a8e | 719 | static int handle_event(int fd, int revents, void *cb_data) |
6c6bc80a | 720 | { |
f2a66a8e | 721 | const struct sr_dev_inst *sdi; |
f2a66a8e C |
722 | struct timeval tv; |
723 | struct sr_dev_driver *di; | |
724 | struct dev_context *devc; | |
725 | struct drv_context *drvc; | |
726 | ||
727 | (void)fd; | |
728 | (void)revents; | |
729 | ||
730 | sdi = cb_data; | |
731 | di = sdi->driver; | |
732 | drvc = di->context; | |
733 | devc = sdi->priv; | |
734 | ||
735 | /* Always handle pending libusb events. */ | |
736 | tv.tv_sec = tv.tv_usec = 0; | |
737 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
738 | ||
739 | if (devc->dev_state == STOPPING) { | |
740 | /* We've been told to wind up the acquisition. */ | |
741 | sr_dbg("Stopping acquisition."); | |
742 | ||
743 | hantek_6xxx_stop_data_collecting(sdi); | |
744 | /* | |
745 | * TODO: Doesn't really cancel pending transfers so they might | |
746 | * come in after SR_DF_END is sent. | |
747 | */ | |
748 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
749 | ||
bee2b016 | 750 | std_session_send_df_end(sdi); |
f2a66a8e C |
751 | |
752 | devc->dev_state = IDLE; | |
753 | ||
754 | return TRUE; | |
755 | } | |
756 | ||
757 | return TRUE; | |
758 | } | |
759 | ||
695dc859 | 760 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
f2a66a8e C |
761 | { |
762 | struct dev_context *devc; | |
763 | struct sr_dev_driver *di = sdi->driver; | |
764 | struct drv_context *drvc = di->context; | |
6c6bc80a C |
765 | |
766 | if (sdi->status != SR_ST_ACTIVE) | |
767 | return SR_ERR_DEV_CLOSED; | |
768 | ||
f2a66a8e | 769 | devc = sdi->priv; |
f2a66a8e C |
770 | |
771 | if (configure_channels(sdi) != SR_OK) { | |
772 | sr_err("Failed to configure channels."); | |
773 | return SR_ERR; | |
774 | } | |
775 | ||
776 | if (hantek_6xxx_init(sdi) != SR_OK) | |
777 | return SR_ERR; | |
778 | ||
bee2b016 | 779 | std_session_send_df_header(sdi); |
f2a66a8e C |
780 | |
781 | devc->samp_received = 0; | |
782 | devc->dev_state = FLUSH; | |
783 | ||
784 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, | |
785 | handle_event, (void *)sdi); | |
786 | ||
787 | hantek_6xxx_start_data_collecting(sdi); | |
788 | ||
789 | read_channel(sdi, FLUSH_PACKET_SIZE); | |
6c6bc80a C |
790 | |
791 | return SR_OK; | |
792 | } | |
793 | ||
695dc859 | 794 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
6c6bc80a | 795 | { |
f2a66a8e C |
796 | struct dev_context *devc; |
797 | ||
6c6bc80a | 798 | if (sdi->status != SR_ST_ACTIVE) |
f2a66a8e C |
799 | return SR_ERR; |
800 | ||
801 | devc = sdi->priv; | |
802 | devc->dev_state = STOPPING; | |
6c6bc80a | 803 | |
f2a66a8e | 804 | g_free(devc->sample_buf); devc->sample_buf = NULL; |
6c6bc80a C |
805 | |
806 | return SR_OK; | |
807 | } | |
808 | ||
dd5c48a6 | 809 | static struct sr_dev_driver hantek_6xxx_driver_info = { |
6c6bc80a C |
810 | .name = "hantek-6xxx", |
811 | .longname = "Hantek 6xxx", | |
812 | .api_version = 1, | |
c2fdcc25 | 813 | .init = std_init, |
700d6b64 | 814 | .cleanup = std_cleanup, |
6c6bc80a | 815 | .scan = scan, |
c01bf34c | 816 | .dev_list = std_dev_list, |
6c6bc80a C |
817 | .dev_clear = dev_clear, |
818 | .config_get = config_get, | |
819 | .config_set = config_set, | |
820 | .config_list = config_list, | |
821 | .dev_open = dev_open, | |
822 | .dev_close = dev_close, | |
823 | .dev_acquisition_start = dev_acquisition_start, | |
824 | .dev_acquisition_stop = dev_acquisition_stop, | |
825 | .context = NULL, | |
826 | }; | |
dd5c48a6 | 827 | SR_REGISTER_DEV_DRIVER(hantek_6xxx_driver_info); |