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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> | |
1e1fdbc9 | 21 | #include <math.h> |
6c6bc80a C |
22 | #include "protocol.h" |
23 | ||
f2a66a8e C |
24 | /* Max time in ms before we want to check on USB events */ |
25 | #define TICK 200 | |
26 | ||
27 | #define RANGE(ch) (((float)vdivs[devc->voltage[ch]][0] / 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_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
40 | SR_CONF_NUM_VDIV | SR_CONF_GET, | |
41 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
42 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
43 | }; | |
44 | ||
45 | static const uint32_t devopts_cg[] = { | |
46 | SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
cc5ebc8a | 47 | SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
f2a66a8e C |
48 | }; |
49 | ||
50 | static const char *channel_names[] = { | |
51 | "CH1", "CH2", | |
52 | }; | |
53 | ||
5eb4ba29 BL |
54 | static const char *dc_coupling[] = { |
55 | "DC", "DC", | |
56 | }; | |
57 | ||
58 | static const char *acdc_coupling[] = { | |
cc5ebc8a BL |
59 | "AC", "DC", |
60 | }; | |
61 | ||
f2a66a8e C |
62 | static const struct hantek_6xxx_profile dev_profiles[] = { |
63 | { | |
64 | 0x04b4, 0x6022, 0x04b5, 0x6022, | |
65 | "Hantek", "6022BE", "hantek-6022be.fw", | |
817b7441 | 66 | dc_coupling, ARRAY_SIZE(dc_coupling), FALSE, |
f2a66a8e | 67 | }, |
692c3b22 | 68 | { |
1079324f | 69 | 0x8102, 0x8102, 0x1D50, 0x608E, |
692c3b22 | 70 | "Sainsmart", "DDS120", "sainsmart-dds120.fw", |
817b7441 | 71 | acdc_coupling, ARRAY_SIZE(acdc_coupling), TRUE, |
692c3b22 | 72 | }, |
f2a66a8e C |
73 | ALL_ZERO |
74 | }; | |
75 | ||
76 | static const uint64_t samplerates[] = { | |
77 | SAMPLERATE_VALUES | |
78 | }; | |
79 | ||
80 | static const uint64_t vdivs[][2] = { | |
81 | VDIV_VALUES | |
82 | }; | |
83 | ||
f2a66a8e C |
84 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount); |
85 | ||
695dc859 | 86 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
f2a66a8e | 87 | |
15a5bfe4 | 88 | static struct sr_dev_inst *hantek_6xxx_dev_new(const struct hantek_6xxx_profile *prof) |
f2a66a8e C |
89 | { |
90 | struct sr_dev_inst *sdi; | |
91 | struct sr_channel *ch; | |
92 | struct sr_channel_group *cg; | |
f2a66a8e C |
93 | struct dev_context *devc; |
94 | unsigned int i; | |
95 | ||
96 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
97 | sdi->status = SR_ST_INITIALIZING; | |
98 | sdi->vendor = g_strdup(prof->vendor); | |
99 | sdi->model = g_strdup(prof->model); | |
f2a66a8e C |
100 | |
101 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
102 | ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
103 | cg = g_malloc0(sizeof(struct sr_channel_group)); | |
104 | cg->name = g_strdup(channel_names[i]); | |
105 | cg->channels = g_slist_append(cg->channels, ch); | |
106 | sdi->channel_groups = g_slist_append(sdi->channel_groups, cg); | |
107 | } | |
108 | ||
109 | devc = g_malloc0(sizeof(struct dev_context)); | |
110 | ||
111 | for (i = 0; i < NUM_CHANNELS; i++) { | |
112 | devc->ch_enabled[i] = TRUE; | |
113 | devc->voltage[i] = DEFAULT_VOLTAGE; | |
cc5ebc8a | 114 | devc->coupling[i] = DEFAULT_COUPLING; |
f2a66a8e | 115 | } |
5eb4ba29 BL |
116 | devc->coupling_vals = prof->coupling_vals; |
117 | devc->coupling_tab_size = prof->coupling_tab_size; | |
f2a66a8e C |
118 | |
119 | devc->sample_buf = NULL; | |
120 | devc->sample_buf_write = 0; | |
121 | devc->sample_buf_size = 0; | |
122 | ||
123 | devc->profile = prof; | |
124 | devc->dev_state = IDLE; | |
125 | devc->samplerate = DEFAULT_SAMPLERATE; | |
126 | ||
127 | sdi->priv = devc; | |
f2a66a8e C |
128 | |
129 | return sdi; | |
130 | } | |
131 | ||
132 | static int configure_channels(const struct sr_dev_inst *sdi) | |
133 | { | |
134 | struct dev_context *devc; | |
135 | const GSList *l; | |
136 | int p; | |
137 | struct sr_channel *ch; | |
138 | devc = sdi->priv; | |
139 | ||
140 | g_slist_free(devc->enabled_channels); | |
141 | devc->enabled_channels = NULL; | |
142 | memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled)); | |
143 | ||
144 | for (l = sdi->channels, p = 0; l; l = l->next, p++) { | |
145 | ch = l->data; | |
146 | if (p < NUM_CHANNELS) { | |
147 | devc->ch_enabled[p] = ch->enabled; | |
148 | devc->enabled_channels = g_slist_append(devc->enabled_channels, ch); | |
149 | } | |
150 | } | |
151 | ||
152 | return SR_OK; | |
153 | } | |
154 | ||
155 | static void clear_dev_context(void *priv) | |
156 | { | |
157 | struct dev_context *devc; | |
158 | ||
159 | devc = priv; | |
160 | g_slist_free(devc->enabled_channels); | |
5954e716 | 161 | g_free(devc); |
f2a66a8e C |
162 | } |
163 | ||
164 | static int dev_clear(const struct sr_dev_driver *di) | |
165 | { | |
166 | return std_dev_clear(di, clear_dev_context); | |
167 | } | |
168 | ||
6c6bc80a C |
169 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
170 | { | |
171 | struct drv_context *drvc; | |
f2a66a8e C |
172 | struct dev_context *devc; |
173 | struct sr_dev_inst *sdi; | |
174 | struct sr_usb_dev_inst *usb; | |
175 | struct sr_config *src; | |
176 | const struct hantek_6xxx_profile *prof; | |
177 | GSList *l, *devices, *conn_devices; | |
178 | struct libusb_device_descriptor des; | |
179 | libusb_device **devlist; | |
180 | int i, j; | |
181 | const char *conn; | |
182 | char connection_id[64]; | |
6c6bc80a | 183 | |
6c6bc80a | 184 | drvc = di->context; |
6c6bc80a | 185 | |
f2a66a8e C |
186 | devices = 0; |
187 | ||
188 | conn = NULL; | |
189 | for (l = options; l; l = l->next) { | |
190 | src = l->data; | |
191 | if (src->key == SR_CONF_CONN) { | |
192 | conn = g_variant_get_string(src->data, NULL); | |
193 | break; | |
194 | } | |
195 | } | |
196 | if (conn) | |
197 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
198 | else | |
199 | conn_devices = NULL; | |
200 | ||
201 | /* Find all Hantek 60xx devices and upload firmware to all of them. */ | |
202 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
203 | for (i = 0; devlist[i]; i++) { | |
204 | if (conn) { | |
205 | usb = NULL; | |
206 | for (l = conn_devices; l; l = l->next) { | |
207 | usb = l->data; | |
208 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
209 | && usb->address == libusb_get_device_address(devlist[i])) | |
210 | break; | |
211 | } | |
212 | if (!l) | |
213 | /* This device matched none of the ones that | |
214 | * matched the conn specification. */ | |
215 | continue; | |
216 | } | |
217 | ||
c940b7a3 | 218 | libusb_get_device_descriptor(devlist[i], &des); |
f2a66a8e C |
219 | |
220 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
221 | ||
222 | prof = NULL; | |
0d8a3063 | 223 | for (j = 0; dev_profiles[j].orig_vid; j++) { |
f2a66a8e C |
224 | if (des.idVendor == dev_profiles[j].orig_vid |
225 | && des.idProduct == dev_profiles[j].orig_pid) { | |
226 | /* Device matches the pre-firmware profile. */ | |
227 | prof = &dev_profiles[j]; | |
228 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
15a5bfe4 | 229 | sdi = hantek_6xxx_dev_new(prof); |
f2a66a8e C |
230 | sdi->connection_id = g_strdup(connection_id); |
231 | devices = g_slist_append(devices, sdi); | |
232 | devc = sdi->priv; | |
233 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
234 | USB_CONFIGURATION, prof->firmware) == SR_OK) | |
235 | /* Remember when the firmware on this device was updated. */ | |
236 | devc->fw_updated = g_get_monotonic_time(); | |
237 | else | |
238 | sr_err("Firmware upload failed."); | |
239 | /* Dummy USB address of 0xff will get overwritten later. */ | |
240 | sdi->conn = sr_usb_dev_inst_new( | |
241 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
242 | break; | |
243 | } else if (des.idVendor == dev_profiles[j].fw_vid | |
244 | && des.idProduct == dev_profiles[j].fw_pid) { | |
245 | /* Device matches the post-firmware profile. */ | |
246 | prof = &dev_profiles[j]; | |
247 | sr_dbg("Found a %s %s.", prof->vendor, prof->model); | |
15a5bfe4 | 248 | sdi = hantek_6xxx_dev_new(prof); |
f2a66a8e C |
249 | sdi->connection_id = g_strdup(connection_id); |
250 | sdi->status = SR_ST_INACTIVE; | |
251 | devices = g_slist_append(devices, sdi); | |
252 | sdi->inst_type = SR_INST_USB; | |
253 | sdi->conn = sr_usb_dev_inst_new( | |
254 | libusb_get_bus_number(devlist[i]), | |
255 | libusb_get_device_address(devlist[i]), NULL); | |
256 | break; | |
257 | } | |
258 | } | |
259 | if (!prof) | |
260 | /* Not a supported VID/PID. */ | |
261 | continue; | |
262 | } | |
263 | libusb_free_device_list(devlist, 1); | |
6c6bc80a | 264 | |
15a5bfe4 | 265 | return std_scan_complete(di, devices); |
6c6bc80a C |
266 | } |
267 | ||
6c6bc80a C |
268 | static int dev_open(struct sr_dev_inst *sdi) |
269 | { | |
f2a66a8e C |
270 | struct dev_context *devc; |
271 | struct sr_usb_dev_inst *usb; | |
272 | int64_t timediff_us, timediff_ms; | |
273 | int err; | |
274 | ||
275 | devc = sdi->priv; | |
276 | usb = sdi->conn; | |
277 | ||
278 | /* | |
279 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
280 | * for the FX2 to renumerate. | |
281 | */ | |
282 | err = SR_ERR; | |
283 | if (devc->fw_updated > 0) { | |
284 | sr_info("Waiting for device to reset."); | |
285 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
286 | g_usleep(300 * 1000); | |
287 | timediff_ms = 0; | |
288 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
289 | if ((err = hantek_6xxx_open(sdi)) == SR_OK) | |
290 | break; | |
291 | g_usleep(100 * 1000); | |
292 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
293 | timediff_ms = timediff_us / 1000; | |
294 | sr_spew("Waited %" PRIi64 " ms.", timediff_ms); | |
295 | } | |
296 | if (timediff_ms < MAX_RENUM_DELAY_MS) | |
297 | sr_info("Device came back after %"PRIu64" ms.", timediff_ms); | |
298 | } else { | |
299 | err = hantek_6xxx_open(sdi); | |
300 | } | |
6c6bc80a | 301 | |
f2a66a8e C |
302 | if (err != SR_OK) { |
303 | sr_err("Unable to open device."); | |
304 | return SR_ERR; | |
305 | } | |
6c6bc80a | 306 | |
f2a66a8e C |
307 | err = libusb_claim_interface(usb->devhdl, USB_INTERFACE); |
308 | if (err != 0) { | |
309 | sr_err("Unable to claim interface: %s.", | |
d9251a2c | 310 | libusb_error_name(err)); |
f2a66a8e C |
311 | return SR_ERR; |
312 | } | |
6c6bc80a C |
313 | |
314 | return SR_OK; | |
315 | } | |
316 | ||
317 | static int dev_close(struct sr_dev_inst *sdi) | |
318 | { | |
f2a66a8e | 319 | hantek_6xxx_close(sdi); |
6c6bc80a C |
320 | |
321 | return SR_OK; | |
322 | } | |
323 | ||
6c6bc80a C |
324 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
325 | const struct sr_channel_group *cg) | |
326 | { | |
f2a66a8e C |
327 | struct dev_context *devc; |
328 | struct sr_usb_dev_inst *usb; | |
329 | char str[128]; | |
330 | const uint64_t *vdiv; | |
331 | int ch_idx; | |
6c6bc80a | 332 | |
6c6bc80a | 333 | switch (key) { |
f2a66a8e C |
334 | case SR_CONF_NUM_VDIV: |
335 | *data = g_variant_new_int32(ARRAY_SIZE(vdivs)); | |
336 | break; | |
6c6bc80a C |
337 | } |
338 | ||
f2a66a8e C |
339 | if (!sdi) |
340 | return SR_ERR_ARG; | |
341 | ||
342 | devc = sdi->priv; | |
343 | if (!cg) { | |
344 | switch (key) { | |
345 | case SR_CONF_SAMPLERATE: | |
346 | *data = g_variant_new_uint64(devc->samplerate); | |
347 | break; | |
348 | case SR_CONF_LIMIT_MSEC: | |
349 | *data = g_variant_new_uint64(devc->limit_msec); | |
350 | break; | |
351 | case SR_CONF_LIMIT_SAMPLES: | |
352 | *data = g_variant_new_uint64(devc->limit_samples); | |
353 | break; | |
354 | case SR_CONF_CONN: | |
355 | if (!sdi->conn) | |
356 | return SR_ERR_ARG; | |
357 | usb = sdi->conn; | |
358 | if (usb->address == 255) | |
359 | /* Device still needs to re-enumerate after firmware | |
360 | * upload, so we don't know its (future) address. */ | |
361 | return SR_ERR; | |
362 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
363 | *data = g_variant_new_string(str); | |
364 | break; | |
365 | default: | |
366 | return SR_ERR_NA; | |
367 | } | |
368 | } else { | |
369 | if (sdi->channel_groups->data == cg) | |
370 | ch_idx = 0; | |
371 | else if (sdi->channel_groups->next->data == cg) | |
372 | ch_idx = 1; | |
373 | else | |
374 | return SR_ERR_ARG; | |
375 | switch (key) { | |
376 | case SR_CONF_VDIV: | |
377 | vdiv = vdivs[devc->voltage[ch_idx]]; | |
378 | *data = g_variant_new("(tt)", vdiv[0], vdiv[1]); | |
379 | break; | |
cc5ebc8a | 380 | case SR_CONF_COUPLING: |
5eb4ba29 | 381 | *data = g_variant_new_string(devc->coupling_vals[devc->coupling[ch_idx]]); |
cc5ebc8a | 382 | break; |
f2a66a8e C |
383 | } |
384 | } | |
385 | ||
386 | return SR_OK; | |
6c6bc80a C |
387 | } |
388 | ||
389 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
390 | const struct sr_channel_group *cg) | |
391 | { | |
f2a66a8e C |
392 | struct dev_context *devc; |
393 | uint64_t p, q; | |
394 | int tmp_int, ch_idx, ret; | |
395 | unsigned int i; | |
cc5ebc8a | 396 | const char *tmp_str; |
6c6bc80a C |
397 | |
398 | if (sdi->status != SR_ST_ACTIVE) | |
399 | return SR_ERR_DEV_CLOSED; | |
400 | ||
401 | ret = SR_OK; | |
f2a66a8e C |
402 | devc = sdi->priv; |
403 | if (!cg) { | |
404 | switch (key) { | |
405 | case SR_CONF_SAMPLERATE: | |
406 | devc->samplerate = g_variant_get_uint64(data); | |
407 | hantek_6xxx_update_samplerate(sdi); | |
408 | break; | |
409 | case SR_CONF_LIMIT_MSEC: | |
410 | devc->limit_msec = g_variant_get_uint64(data); | |
411 | break; | |
412 | case SR_CONF_LIMIT_SAMPLES: | |
413 | devc->limit_samples = g_variant_get_uint64(data); | |
414 | break; | |
415 | default: | |
416 | ret = SR_ERR_NA; | |
417 | break; | |
418 | } | |
419 | } else { | |
420 | if (sdi->channel_groups->data == cg) | |
421 | ch_idx = 0; | |
422 | else if (sdi->channel_groups->next->data == cg) | |
423 | ch_idx = 1; | |
424 | else | |
425 | return SR_ERR_ARG; | |
426 | switch (key) { | |
427 | case SR_CONF_VDIV: | |
428 | g_variant_get(data, "(tt)", &p, &q); | |
429 | tmp_int = -1; | |
430 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
431 | if (vdivs[i][0] == p && vdivs[i][1] == q) { | |
432 | tmp_int = i; | |
433 | break; | |
434 | } | |
435 | } | |
436 | if (tmp_int >= 0) { | |
437 | devc->voltage[ch_idx] = tmp_int; | |
438 | hantek_6xxx_update_vdiv(sdi); | |
439 | } else | |
440 | ret = SR_ERR_ARG; | |
441 | break; | |
cc5ebc8a BL |
442 | case SR_CONF_COUPLING: |
443 | tmp_str = g_variant_get_string(data, NULL); | |
817b7441 | 444 | for (i = 0; i < devc->coupling_tab_size; i++) { |
5eb4ba29 | 445 | if (!strcmp(tmp_str, devc->coupling_vals[i])) { |
cc5ebc8a BL |
446 | devc->coupling[ch_idx] = i; |
447 | break; | |
448 | } | |
449 | } | |
817b7441 | 450 | if (i == devc->coupling_tab_size) |
cc5ebc8a BL |
451 | ret = SR_ERR_ARG; |
452 | break; | |
f2a66a8e C |
453 | default: |
454 | ret = SR_ERR_NA; | |
455 | break; | |
456 | } | |
6c6bc80a C |
457 | } |
458 | ||
459 | return ret; | |
460 | } | |
461 | ||
462 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
463 | const struct sr_channel_group *cg) | |
464 | { | |
f2a66a8e C |
465 | GVariant *tuple, *rational[2]; |
466 | GVariantBuilder gvb; | |
467 | unsigned int i; | |
468 | GVariant *gvar; | |
817b7441 | 469 | struct dev_context *devc = NULL; |
5eb4ba29 | 470 | |
f2a66a8e C |
471 | if (key == SR_CONF_SCAN_OPTIONS) { |
472 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
473 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
474 | return SR_OK; | |
475 | } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) { | |
476 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
477 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
478 | return SR_OK; | |
479 | } | |
6c6bc80a | 480 | |
817b7441 EM |
481 | if (sdi) |
482 | devc = sdi->priv; | |
7f46b27e | 483 | |
f2a66a8e C |
484 | if (!cg) { |
485 | switch (key) { | |
486 | case SR_CONF_DEVICE_OPTIONS: | |
487 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
488 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
489 | break; | |
490 | case SR_CONF_SAMPLERATE: | |
491 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
492 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
493 | samplerates, ARRAY_SIZE(samplerates), | |
494 | sizeof(uint64_t)); | |
495 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
496 | *data = g_variant_builder_end(&gvb); | |
497 | break; | |
498 | default: | |
499 | return SR_ERR_NA; | |
500 | } | |
501 | } else { | |
502 | switch (key) { | |
503 | case SR_CONF_DEVICE_OPTIONS: | |
504 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
505 | devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t)); | |
506 | break; | |
cc5ebc8a | 507 | case SR_CONF_COUPLING: |
817b7441 EM |
508 | if (!devc) |
509 | return SR_ERR_NA; | |
5eb4ba29 | 510 | *data = g_variant_new_strv(devc->coupling_vals, devc->coupling_tab_size); |
cc5ebc8a | 511 | break; |
f2a66a8e C |
512 | case SR_CONF_VDIV: |
513 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
514 | for (i = 0; i < ARRAY_SIZE(vdivs); i++) { | |
515 | rational[0] = g_variant_new_uint64(vdivs[i][0]); | |
516 | rational[1] = g_variant_new_uint64(vdivs[i][1]); | |
517 | tuple = g_variant_new_tuple(rational, 2); | |
518 | g_variant_builder_add_value(&gvb, tuple); | |
519 | } | |
520 | *data = g_variant_builder_end(&gvb); | |
521 | break; | |
522 | default: | |
523 | return SR_ERR_NA; | |
524 | } | |
525 | } | |
6c6bc80a | 526 | |
f2a66a8e C |
527 | return SR_OK; |
528 | } | |
529 | ||
530 | /* Minimise data amount for limit_samples and limit_msec limits. */ | |
531 | static uint32_t data_amount(const struct sr_dev_inst *sdi) | |
532 | { | |
533 | struct dev_context *devc = sdi->priv; | |
af7f8824 | 534 | uint32_t data_left, data_left_2, i; |
f2a66a8e C |
535 | int32_t time_left; |
536 | ||
537 | if (devc->limit_msec) { | |
538 | time_left = devc->limit_msec - (g_get_monotonic_time() - devc->aq_started) / 1000; | |
539 | data_left = devc->samplerate * MAX(time_left, 0) * NUM_CHANNELS / 1000; | |
540 | } else if (devc->limit_samples) { | |
541 | data_left = (devc->limit_samples - devc->samp_received) * NUM_CHANNELS; | |
542 | } else { | |
543 | data_left = devc->samplerate * NUM_CHANNELS; | |
544 | } | |
545 | ||
af7f8824 UH |
546 | /* Round up to nearest power of two. */ |
547 | for (i = MIN_PACKET_SIZE; i < data_left; i *= 2) | |
548 | ; | |
549 | data_left_2 = i; | |
f2a66a8e | 550 | |
af7f8824 | 551 | sr_spew("data_amount: %u (rounded to power of 2: %u)", data_left, data_left_2); |
f2a66a8e | 552 | |
af7f8824 | 553 | return data_left_2; |
f2a66a8e C |
554 | } |
555 | ||
556 | static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf, | |
557 | int num_samples) | |
558 | { | |
559 | struct sr_datafeed_packet packet; | |
2938c9d1 UH |
560 | struct sr_datafeed_analog analog; |
561 | struct sr_analog_encoding encoding; | |
562 | struct sr_analog_meaning meaning; | |
563 | struct sr_analog_spec spec; | |
f2a66a8e | 564 | struct dev_context *devc = sdi->priv; |
1e1fdbc9 | 565 | GSList *channels = devc->enabled_channels; |
f2a66a8e | 566 | |
1e1fdbc9 AJ |
567 | const float ch_bit[] = { RANGE(0) / 255, RANGE(1) / 255 }; |
568 | const float ch_center[] = { RANGE(0) / 2, RANGE(1) / 2 }; | |
f2a66a8e | 569 | |
2938c9d1 UH |
570 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); |
571 | ||
2938c9d1 | 572 | packet.type = SR_DF_ANALOG; |
f2a66a8e C |
573 | packet.payload = &analog; |
574 | ||
f2a66a8e | 575 | analog.num_samples = num_samples; |
2938c9d1 UH |
576 | analog.meaning->mq = SR_MQ_VOLTAGE; |
577 | analog.meaning->unit = SR_UNIT_VOLT; | |
578 | analog.meaning->mqflags = 0; | |
f2a66a8e | 579 | |
1e1fdbc9 | 580 | analog.data = g_try_malloc(num_samples * sizeof(float)); |
f2a66a8e C |
581 | if (!analog.data) { |
582 | sr_err("Analog data buffer malloc failed."); | |
583 | devc->dev_state = STOPPING; | |
584 | return; | |
585 | } | |
586 | ||
1e1fdbc9 AJ |
587 | for (int ch = 0; ch < 2; ch++) { |
588 | if (!devc->ch_enabled[ch]) | |
589 | continue; | |
f2a66a8e | 590 | |
1e1fdbc9 AJ |
591 | float vdivlog = log10f(ch_bit[ch]); |
592 | int digits = -(int)vdivlog + (vdivlog < 0.0); | |
593 | analog.encoding->digits = digits; | |
594 | analog.spec->spec_digits = digits; | |
595 | analog.meaning->channels = g_slist_append(NULL, channels->data); | |
596 | ||
597 | for (int i = 0; i < num_samples; i++) { | |
598 | /* | |
599 | * The device always sends data for both channels. If a channel | |
600 | * is disabled, it contains a copy of the enabled channel's | |
601 | * data. However, we only send the requested channels to | |
602 | * the bus. | |
603 | * | |
604 | * Voltage values are encoded as a value 0-255, where the | |
605 | * value is a point in the range represented by the vdiv | |
606 | * setting. There are 10 vertical divs, so e.g. 500mV/div | |
607 | * represents 5V peak-to-peak where 0 = -2.5V and 255 = +2.5V. | |
608 | */ | |
609 | ((float *)analog.data)[i] = ch_bit[ch] * *(buf + i * 2 + ch) - ch_center[ch]; | |
610 | } | |
611 | ||
612 | sr_session_send(sdi, &packet); | |
613 | g_slist_free(analog.meaning->channels); | |
614 | ||
615 | channels = channels->next; | |
616 | } | |
f2a66a8e C |
617 | g_free(analog.data); |
618 | } | |
619 | ||
620 | static void send_data(struct sr_dev_inst *sdi, struct libusb_transfer *buf[], uint64_t samples) | |
621 | { | |
622 | int i = 0; | |
623 | uint64_t send = 0; | |
624 | uint32_t chunk; | |
625 | ||
626 | while (send < samples) { | |
627 | chunk = MIN(samples - send, (uint64_t)(buf[i]->actual_length / NUM_CHANNELS)); | |
628 | send += chunk; | |
629 | send_chunk(sdi, buf[i]->buffer, chunk); | |
630 | ||
631 | /* | |
632 | * Everything in this transfer was either copied to the buffer | |
633 | * or sent to the session bus. | |
634 | */ | |
635 | g_free(buf[i]->buffer); | |
636 | libusb_free_transfer(buf[i]); | |
637 | i++; | |
638 | } | |
639 | } | |
640 | ||
641 | /* | |
642 | * Called by libusb (as triggered by handle_event()) when a transfer comes in. | |
643 | * Only channel data comes in asynchronously, and all transfers for this are | |
644 | * queued up beforehand, so this just needs to chuck the incoming data onto | |
645 | * the libsigrok session bus. | |
646 | */ | |
647 | static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) | |
648 | { | |
649 | struct sr_dev_inst *sdi; | |
650 | struct dev_context *devc; | |
651 | ||
652 | sdi = transfer->user_data; | |
653 | devc = sdi->priv; | |
654 | ||
655 | if (devc->dev_state == FLUSH) { | |
5954e716 BL |
656 | g_free(transfer->buffer); |
657 | libusb_free_transfer(transfer); | |
f2a66a8e C |
658 | devc->dev_state = CAPTURE; |
659 | devc->aq_started = g_get_monotonic_time(); | |
660 | read_channel(sdi, data_amount(sdi)); | |
661 | return; | |
662 | } | |
663 | ||
664 | if (devc->dev_state != CAPTURE) | |
665 | return; | |
666 | ||
667 | if (!devc->sample_buf) { | |
668 | devc->sample_buf_size = 10; | |
669 | devc->sample_buf = g_try_malloc(devc->sample_buf_size * sizeof(transfer)); | |
670 | devc->sample_buf_write = 0; | |
671 | } | |
672 | ||
673 | if (devc->sample_buf_write >= devc->sample_buf_size) { | |
674 | devc->sample_buf_size += 10; | |
675 | devc->sample_buf = g_try_realloc(devc->sample_buf, | |
676 | devc->sample_buf_size * sizeof(transfer)); | |
677 | if (!devc->sample_buf) { | |
678 | sr_err("Sample buffer malloc failed."); | |
679 | devc->dev_state = STOPPING; | |
680 | return; | |
681 | } | |
6c6bc80a C |
682 | } |
683 | ||
f2a66a8e | 684 | devc->sample_buf[devc->sample_buf_write++] = transfer; |
10e0d374 | 685 | devc->samp_received += transfer->actual_length / NUM_CHANNELS; |
f2a66a8e C |
686 | |
687 | sr_spew("receive_transfer(): calculated samplerate == %" PRIu64 "ks/s", | |
688 | (uint64_t)(transfer->actual_length * 1000 / | |
689 | (g_get_monotonic_time() - devc->read_start_ts + 1) / | |
690 | NUM_CHANNELS)); | |
691 | ||
692 | sr_spew("receive_transfer(): status %s received %d bytes.", | |
693 | libusb_error_name(transfer->status), transfer->actual_length); | |
694 | ||
695 | if (transfer->actual_length == 0) | |
696 | /* Nothing to send to the bus. */ | |
697 | return; | |
698 | ||
699 | if (devc->limit_samples && devc->samp_received >= devc->limit_samples) { | |
700 | sr_info("Requested number of samples reached, stopping. %" | |
701 | PRIu64 " <= %" PRIu64, devc->limit_samples, | |
702 | devc->samp_received); | |
703 | send_data(sdi, devc->sample_buf, devc->limit_samples); | |
695dc859 | 704 | sdi->driver->dev_acquisition_stop(sdi); |
f2a66a8e C |
705 | } else if (devc->limit_msec && (g_get_monotonic_time() - |
706 | devc->aq_started) / 1000 >= devc->limit_msec) { | |
707 | sr_info("Requested time limit reached, stopping. %d <= %d", | |
708 | (uint32_t)devc->limit_msec, | |
709 | (uint32_t)(g_get_monotonic_time() - devc->aq_started) / 1000); | |
710 | send_data(sdi, devc->sample_buf, devc->samp_received); | |
711 | g_free(devc->sample_buf); | |
712 | devc->sample_buf = NULL; | |
695dc859 | 713 | sdi->driver->dev_acquisition_stop(sdi); |
f2a66a8e C |
714 | } else { |
715 | read_channel(sdi, data_amount(sdi)); | |
716 | } | |
717 | } | |
718 | ||
719 | static int read_channel(const struct sr_dev_inst *sdi, uint32_t amount) | |
720 | { | |
721 | int ret; | |
722 | struct dev_context *devc; | |
723 | ||
724 | devc = sdi->priv; | |
725 | ||
726 | amount = MIN(amount, MAX_PACKET_SIZE); | |
727 | ret = hantek_6xxx_get_channeldata(sdi, receive_transfer, amount); | |
728 | devc->read_start_ts = g_get_monotonic_time(); | |
729 | devc->read_data_amount = amount; | |
730 | ||
6c6bc80a C |
731 | return ret; |
732 | } | |
733 | ||
f2a66a8e | 734 | static int handle_event(int fd, int revents, void *cb_data) |
6c6bc80a | 735 | { |
f2a66a8e | 736 | const struct sr_dev_inst *sdi; |
f2a66a8e C |
737 | struct timeval tv; |
738 | struct sr_dev_driver *di; | |
739 | struct dev_context *devc; | |
740 | struct drv_context *drvc; | |
741 | ||
742 | (void)fd; | |
743 | (void)revents; | |
744 | ||
745 | sdi = cb_data; | |
746 | di = sdi->driver; | |
747 | drvc = di->context; | |
748 | devc = sdi->priv; | |
749 | ||
750 | /* Always handle pending libusb events. */ | |
751 | tv.tv_sec = tv.tv_usec = 0; | |
752 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
753 | ||
754 | if (devc->dev_state == STOPPING) { | |
755 | /* We've been told to wind up the acquisition. */ | |
756 | sr_dbg("Stopping acquisition."); | |
757 | ||
758 | hantek_6xxx_stop_data_collecting(sdi); | |
759 | /* | |
760 | * TODO: Doesn't really cancel pending transfers so they might | |
761 | * come in after SR_DF_END is sent. | |
762 | */ | |
763 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
764 | ||
bee2b016 | 765 | std_session_send_df_end(sdi); |
f2a66a8e C |
766 | |
767 | devc->dev_state = IDLE; | |
768 | ||
769 | return TRUE; | |
770 | } | |
771 | ||
772 | return TRUE; | |
773 | } | |
774 | ||
695dc859 | 775 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
f2a66a8e C |
776 | { |
777 | struct dev_context *devc; | |
778 | struct sr_dev_driver *di = sdi->driver; | |
779 | struct drv_context *drvc = di->context; | |
6c6bc80a C |
780 | |
781 | if (sdi->status != SR_ST_ACTIVE) | |
782 | return SR_ERR_DEV_CLOSED; | |
783 | ||
f2a66a8e | 784 | devc = sdi->priv; |
f2a66a8e C |
785 | |
786 | if (configure_channels(sdi) != SR_OK) { | |
787 | sr_err("Failed to configure channels."); | |
788 | return SR_ERR; | |
789 | } | |
790 | ||
791 | if (hantek_6xxx_init(sdi) != SR_OK) | |
792 | return SR_ERR; | |
793 | ||
bee2b016 | 794 | std_session_send_df_header(sdi); |
f2a66a8e C |
795 | |
796 | devc->samp_received = 0; | |
797 | devc->dev_state = FLUSH; | |
798 | ||
799 | usb_source_add(sdi->session, drvc->sr_ctx, TICK, | |
800 | handle_event, (void *)sdi); | |
801 | ||
802 | hantek_6xxx_start_data_collecting(sdi); | |
803 | ||
804 | read_channel(sdi, FLUSH_PACKET_SIZE); | |
6c6bc80a C |
805 | |
806 | return SR_OK; | |
807 | } | |
808 | ||
695dc859 | 809 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
6c6bc80a | 810 | { |
f2a66a8e C |
811 | struct dev_context *devc; |
812 | ||
6c6bc80a | 813 | if (sdi->status != SR_ST_ACTIVE) |
f2a66a8e C |
814 | return SR_ERR; |
815 | ||
816 | devc = sdi->priv; | |
817 | devc->dev_state = STOPPING; | |
6c6bc80a | 818 | |
f2a66a8e | 819 | g_free(devc->sample_buf); devc->sample_buf = NULL; |
6c6bc80a C |
820 | |
821 | return SR_OK; | |
822 | } | |
823 | ||
dd5c48a6 | 824 | static struct sr_dev_driver hantek_6xxx_driver_info = { |
6c6bc80a C |
825 | .name = "hantek-6xxx", |
826 | .longname = "Hantek 6xxx", | |
827 | .api_version = 1, | |
c2fdcc25 | 828 | .init = std_init, |
700d6b64 | 829 | .cleanup = std_cleanup, |
6c6bc80a | 830 | .scan = scan, |
c01bf34c | 831 | .dev_list = std_dev_list, |
6c6bc80a C |
832 | .dev_clear = dev_clear, |
833 | .config_get = config_get, | |
834 | .config_set = config_set, | |
835 | .config_list = config_list, | |
836 | .dev_open = dev_open, | |
837 | .dev_close = dev_close, | |
838 | .dev_acquisition_start = dev_acquisition_start, | |
839 | .dev_acquisition_stop = dev_acquisition_stop, | |
840 | .context = NULL, | |
841 | }; | |
dd5c48a6 | 842 | SR_REGISTER_DEV_DRIVER(hantek_6xxx_driver_info); |