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1/*
2 * This file is part of the sigrok project.
3 *
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 *
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23#include <sys/time.h>
24#include <inttypes.h>
25#include <glib.h>
26#include <libusb.h>
27#include "libsigrok.h"
28#include "libsigrok-internal.h"
29#include "analyzer.h"
30
31#define USB_VENDOR 0x0c12
32
33#define VENDOR_NAME "ZEROPLUS"
34#define MODEL_NAME "Logic Cube LAP-C"
35#define MODEL_VERSION NULL
36
37#define NUM_PROBES 16
38#define USB_INTERFACE 0
39#define USB_CONFIGURATION 1
40#define NUM_TRIGGER_STAGES 4
41#define TRIGGER_TYPES "01"
42
43#define PACKET_SIZE 2048 /* ?? */
44
45//#define ZP_EXPERIMENTAL
46
47typedef struct {
48 unsigned short vid;
49 unsigned short pid;
50 char *model_name;
51 unsigned int channels;
52 unsigned int sample_depth; /* In Ksamples/channel */
53 unsigned int max_sampling_freq;
54} model_t;
55
56/*
57 * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
58 * same 128K sample depth.
59 */
60static model_t zeroplus_models[] = {
61 {0x0c12, 0x7009, "LAP-C(16064)", 16, 64, 100},
62 {0x0c12, 0x700A, "LAP-C(16128)", 16, 128, 200},
63 /* TODO: we don't know anything about these
64 {0x0c12, 0x700B, "LAP-C(32128)", 32, 128, 200},
65 {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
66 {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
67 */
68 {0x0c12, 0x700E, "LAP-C(16032)", 16, 32, 100},
69 {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
70 { 0, 0, 0, 0, 0, 0 }
71};
72
73static const int hwcaps[] = {
74 SR_HWCAP_LOGIC_ANALYZER,
75 SR_HWCAP_SAMPLERATE,
76 SR_HWCAP_CAPTURE_RATIO,
77
78 /* These are really implemented in the driver, not the hardware. */
79 SR_HWCAP_LIMIT_SAMPLES,
80 0,
81};
82
83/*
84 * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
85 * We currently ignore other untested/unsupported devices here.
86 */
87static const char *probe_names[NUM_PROBES + 1] = {
88 "A0",
89 "A1",
90 "A2",
91 "A3",
92 "A4",
93 "A5",
94 "A6",
95 "A7",
96 "B0",
97 "B1",
98 "B2",
99 "B3",
100 "B4",
101 "B5",
102 "B6",
103 "B7",
104 NULL,
105};
106
107/* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
108SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
109static struct sr_dev_driver *di = &zeroplus_logic_cube_driver_info;
110
111/*
112 * The hardware supports more samplerates than these, but these are the
113 * options hardcoded into the vendor's Windows GUI.
114 */
115
116/*
117 * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
118 * that high.
119 */
120static const uint64_t supported_samplerates[] = {
121 SR_HZ(100),
122 SR_HZ(500),
123 SR_KHZ(1),
124 SR_KHZ(5),
125 SR_KHZ(25),
126 SR_KHZ(50),
127 SR_KHZ(100),
128 SR_KHZ(200),
129 SR_KHZ(400),
130 SR_KHZ(800),
131 SR_MHZ(1),
132 SR_MHZ(10),
133 SR_MHZ(25),
134 SR_MHZ(50),
135 SR_MHZ(80),
136 SR_MHZ(100),
137 SR_MHZ(150),
138 SR_MHZ(200),
139 0,
140};
141
142static const struct sr_samplerates samplerates = {
143 0,
144 0,
145 0,
146 supported_samplerates,
147};
148
149/* Private, per-device-instance driver context. */
150struct dev_context {
151 uint64_t cur_samplerate;
152 uint64_t max_samplerate;
153 uint64_t limit_samples;
154 int num_channels; /* TODO: This isn't initialized before it's needed :( */
155 int memory_size;
156 unsigned int max_memory_size;
157 //uint8_t probe_mask;
158 //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
159 //uint8_t trigger_value[NUM_TRIGGER_STAGES];
160 // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
161 int trigger;
162 unsigned int capture_ratio;
163
164 /* TODO: this belongs in the device instance */
165 struct sr_usb_dev_inst *usb;
166};
167
168static int hw_dev_close(struct sr_dev_inst *sdi);
169
170static unsigned int get_memory_size(int type)
171{
172 if (type == MEMORY_SIZE_8K)
173 return 8 * 1024;
174 else if (type == MEMORY_SIZE_64K)
175 return 64 * 1024;
176 else if (type == MEMORY_SIZE_128K)
177 return 128 * 1024;
178 else if (type == MEMORY_SIZE_512K)
179 return 512 * 1024;
180 else
181 return 0;
182}
183
184#if 0
185static int configure_probes(const struct sr_dev_inst *sdi)
186{
187 struct dev_context *devc;
188 const struct sr_probe *probe;
189 const GSList *l;
190 int probe_bit, stage, i;
191 char *tc;
192
193 /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
194 devc = sdi->priv;
195
196 devc->probe_mask = 0;
197 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
198 devc->trigger_mask[i] = 0;
199 devc->trigger_value[i] = 0;
200 }
201
202 stage = -1;
203 for (l = sdi->probes; l; l = l->next) {
204 probe = (struct sr_probe *)l->data;
205 if (probe->enabled == FALSE)
206 continue;
207 probe_bit = 1 << (probe->index);
208 devc->probe_mask |= probe_bit;
209
210 if (probe->trigger) {
211 stage = 0;
212 for (tc = probe->trigger; *tc; tc++) {
213 devc->trigger_mask[stage] |= probe_bit;
214 if (*tc == '1')
215 devc->trigger_value[stage] |= probe_bit;
216 stage++;
217 if (stage > NUM_TRIGGER_STAGES)
218 return SR_ERR;
219 }
220 }
221 }
222
223 return SR_OK;
224}
225#endif
226
227static int configure_probes(const struct sr_dev_inst *sdi)
228{
229 struct dev_context *devc;
230 const GSList *l;
231 const struct sr_probe *probe;
232 char *tc;
233 int type;
234
235 /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
236 devc = sdi->priv;
237
238 for (l = sdi->probes; l; l = l->next) {
239 probe = (struct sr_probe *)l->data;
240 if (probe->enabled == FALSE)
241 continue;
242
243 if ((tc = probe->trigger)) {
244 switch (*tc) {
245 case '1':
246 type = TRIGGER_HIGH;
247 break;
248 case '0':
249 type = TRIGGER_LOW;
250 break;
251#if 0
252 case 'r':
253 type = TRIGGER_POSEDGE;
254 break;
255 case 'f':
256 type = TRIGGER_NEGEDGE;
257 break;
258 case 'c':
259 type = TRIGGER_ANYEDGE;
260 break;
261#endif
262 default:
263 return SR_ERR;
264 }
265 analyzer_add_trigger(probe->index, type);
266 devc->trigger = 1;
267 }
268 }
269
270 return SR_OK;
271}
272
273static int clear_instances(void)
274{
275 GSList *l;
276 struct sr_dev_inst *sdi;
277 struct drv_context *drvc;
278 struct dev_context *devc;
279
280 drvc = di->priv;
281 for (l = drvc->instances; l; l = l->next) {
282 sdi = l->data;
283 if (!(devc = sdi->priv)) {
284 /* Log error, but continue cleaning up the rest. */
285 sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
286 continue;
287 }
288 sr_usb_dev_inst_free(devc->usb);
289 /* Properly close all devices... */
290 hw_dev_close(sdi);
291 /* ...and free all their memory. */
292 sr_dev_inst_free(sdi);
293 }
294 g_slist_free(drvc->instances);
295 drvc->instances = NULL;
296
297 return SR_OK;
298}
299
300/*
301 * API callbacks
302 */
303
304static int hw_init(struct sr_context *sr_ctx)
305{
306 struct drv_context *drvc;
307
308 if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
309 sr_err("zeroplus: driver context malloc failed.");
310 return SR_ERR_MALLOC;
311 }
312 drvc->sr_ctx = sr_ctx;
313 di->priv = drvc;
314
315 return SR_OK;
316}
317
318static GSList *hw_scan(GSList *options)
319{
320 struct sr_dev_inst *sdi;
321 struct sr_probe *probe;
322 struct drv_context *drvc;
323 struct dev_context *devc;
324 model_t *prof;
325 struct libusb_device_descriptor des;
326 libusb_device **devlist;
327 GSList *devices;
328 int ret, devcnt, i, j;
329
330 (void)options;
331
332 drvc = di->priv;
333 devices = NULL;
334
335 clear_instances();
336
337 /* Find all ZEROPLUS analyzers and add them to device list. */
338 devcnt = 0;
339 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */
340
341 for (i = 0; devlist[i]; i++) {
342 ret = libusb_get_device_descriptor(devlist[i], &des);
343 if (ret != 0) {
344 sr_err("zp: failed to get device descriptor: %s",
345 libusb_error_name(ret));
346 continue;
347 }
348
349 prof = NULL;
350 for (j = 0; j < zeroplus_models[j].vid; j++) {
351 if (des.idVendor == zeroplus_models[j].vid &&
352 des.idProduct == zeroplus_models[j].pid) {
353 prof = &zeroplus_models[j];
354 }
355 }
356 /* Skip if the device was not found */
357 if (!prof)
358 continue;
359 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
360
361 /* Register the device with libsigrok. */
362 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
363 VENDOR_NAME, prof->model_name, NULL))) {
364 sr_err("zp: %s: sr_dev_inst_new failed", __func__);
365 return NULL;
366 }
367 sdi->driver = di;
368
369 /* Allocate memory for our private driver context. */
370 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
371 sr_err("zp: %s: devc malloc failed", __func__);
372 return NULL;
373 }
374 sdi->priv = devc;
375 devc->num_channels = prof->channels;
376#ifdef ZP_EXPERIMENTAL
377 devc->max_memory_size = 128 * 1024;
378 devc->max_samplerate = 200;
379#else
380 devc->max_memory_size = prof->sample_depth * 1024;
381 devc->max_samplerate = prof->max_sampling_freq;
382#endif
383 devc->max_samplerate *= SR_MHZ(1);
384 devc->memory_size = MEMORY_SIZE_8K;
385 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
386
387 /* Fill in probelist according to this device's profile. */
388 for (j = 0; j < devc->num_channels; j++) {
389 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
390 probe_names[j])))
391 return NULL;
392 sdi->probes = g_slist_append(sdi->probes, probe);
393 }
394
395 devices = g_slist_append(devices, sdi);
396 drvc->instances = g_slist_append(drvc->instances, sdi);
397 devc->usb = sr_usb_dev_inst_new(
398 libusb_get_bus_number(devlist[i]),
399 libusb_get_device_address(devlist[i]), NULL);
400 devcnt++;
401
402 }
403 libusb_free_device_list(devlist, 1);
404
405 return devices;
406}
407
408static GSList *hw_dev_list(void)
409{
410 struct drv_context *drvc;
411
412 drvc = di->priv;
413
414 return drvc->instances;
415}
416
417static int hw_dev_open(struct sr_dev_inst *sdi)
418{
419 struct dev_context *devc;
420 struct drv_context *drvc = di->priv;
421 libusb_device **devlist, *dev;
422 struct libusb_device_descriptor des;
423 int device_count, ret, i;
424
425 if (!(devc = sdi->priv)) {
426 sr_err("zp: %s: sdi->priv was NULL", __func__);
427 return SR_ERR_ARG;
428 }
429
430 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx,
431 &devlist);
432 if (device_count < 0) {
433 sr_err("zp: Failed to retrieve device list");
434 return SR_ERR;
435 }
436
437 dev = NULL;
438 for (i = 0; i < device_count; i++) {
439 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
440 sr_err("zp: Failed to get device descriptor: %s.",
441 libusb_error_name(ret));
442 continue;
443 }
444 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
445 && libusb_get_device_address(devlist[i]) == devc->usb->address) {
446 dev = devlist[i];
447 break;
448 }
449 }
450 if (!dev) {
451 sr_err("device on bus %d address %d disappeared!",
452 devc->usb->bus, devc->usb->address);
453 return SR_ERR;
454 }
455
456 if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
457 sdi->status = SR_ST_ACTIVE;
458 sr_info("zp: opened device %d on %d.%d interface %d",
459 sdi->index, devc->usb->bus,
460 devc->usb->address, USB_INTERFACE);
461 } else {
462 sr_err("zp: failed to open device: %s", libusb_error_name(ret));
463 return SR_ERR;
464 }
465
466 ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
467 if (ret < 0) {
468 sr_err("zp: Unable to set USB configuration %d: %s",
469 USB_CONFIGURATION, libusb_error_name(ret));
470 return SR_ERR;
471 }
472
473 ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
474 if (ret != 0) {
475 sr_err("zp: Unable to claim interface: %s",
476 libusb_error_name(ret));
477 return SR_ERR;
478 }
479
480 /* Set default configuration after power on */
481 if (analyzer_read_status(devc->usb->devhdl) == 0)
482 analyzer_configure(devc->usb->devhdl);
483
484 analyzer_reset(devc->usb->devhdl);
485 analyzer_initialize(devc->usb->devhdl);
486
487 //analyzer_set_memory_size(MEMORY_SIZE_512K);
488 // analyzer_set_freq(g_freq, g_freq_scale);
489 analyzer_set_trigger_count(1);
490 // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
491 // * get_memory_size(g_memory_size)) / 100) >> 2);
492
493#if 0
494 if (g_double_mode == 1)
495 analyzer_set_compression(COMPRESSION_DOUBLE);
496 else if (g_compression == 1)
497 analyzer_set_compression(COMPRESSION_ENABLE);
498 else
499#endif
500 analyzer_set_compression(COMPRESSION_NONE);
501
502 if (devc->cur_samplerate == 0) {
503 /* Samplerate hasn't been set. Default to 1MHz. */
504 analyzer_set_freq(1, FREQ_SCALE_MHZ);
505 devc->cur_samplerate = SR_MHZ(1);
506 }
507
508 return SR_OK;
509}
510
511static int hw_dev_close(struct sr_dev_inst *sdi)
512{
513 struct dev_context *devc;
514
515 if (!(devc = sdi->priv)) {
516 sr_err("zp: %s: sdi->priv was NULL", __func__);
517 return SR_ERR;
518 }
519
520 if (!devc->usb->devhdl)
521 return SR_ERR;
522
523 sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
524 devc->usb->bus, devc->usb->address, USB_INTERFACE);
525 libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
526 libusb_reset_device(devc->usb->devhdl);
527 libusb_close(devc->usb->devhdl);
528 devc->usb->devhdl = NULL;
529 sdi->status = SR_ST_INACTIVE;
530
531 return SR_OK;
532}
533
534static int hw_cleanup(void)
535{
536 struct drv_context *drvc;
537
538 if (!(drvc = di->priv))
539 return SR_OK;
540
541 clear_instances();
542
543 return SR_OK;
544}
545
546static int hw_info_get(int info_id, const void **data,
547 const struct sr_dev_inst *sdi)
548{
549 struct dev_context *devc;
550
551 switch (info_id) {
552 case SR_DI_HWCAPS:
553 *data = hwcaps;
554 break;
555 case SR_DI_NUM_PROBES:
556 if (sdi) {
557 devc = sdi->priv;
558 *data = GINT_TO_POINTER(devc->num_channels);
559 sr_spew("zp: %s: Returning number of channels: %d.",
560 __func__, devc->num_channels);
561 } else
562 return SR_ERR;
563 break;
564 case SR_DI_PROBE_NAMES:
565 *data = probe_names;
566 sr_spew("zp: %s: Returning probenames.", __func__);
567 break;
568 case SR_DI_SAMPLERATES:
569 *data = &samplerates;
570 sr_spew("zp: %s: Returning samplerates.", __func__);
571 break;
572 case SR_DI_TRIGGER_TYPES:
573 *data = TRIGGER_TYPES;
574 sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
575 break;
576 case SR_DI_CUR_SAMPLERATE:
577 if (sdi) {
578 devc = sdi->priv;
579 *data = &devc->cur_samplerate;
580 sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
581 __func__, devc->cur_samplerate);
582 } else
583 return SR_ERR;
584 break;
585 default:
586 return SR_ERR_ARG;
587 }
588
589 return SR_OK;
590}
591
592static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
593{
594 int i;
595
596 for (i = 0; supported_samplerates[i]; i++)
597 if (samplerate == supported_samplerates[i])
598 break;
599 if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
600 sr_err("zp: %s: unsupported samplerate", __func__);
601 return SR_ERR_ARG;
602 }
603
604 sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
605
606 if (samplerate >= SR_MHZ(1))
607 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
608 else if (samplerate >= SR_KHZ(1))
609 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
610 else
611 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
612
613 devc->cur_samplerate = samplerate;
614
615 return SR_OK;
616}
617
618static int set_limit_samples(struct dev_context *devc, uint64_t samples)
619{
620 devc->limit_samples = samples;
621
622 if (samples <= 2 * 1024)
623 devc->memory_size = MEMORY_SIZE_8K;
624 else if (samples <= 16 * 1024)
625 devc->memory_size = MEMORY_SIZE_64K;
626 else if (samples <= 32 * 1024 ||
627 devc->max_memory_size <= 32 * 1024)
628 devc->memory_size = MEMORY_SIZE_128K;
629 else
630 devc->memory_size = MEMORY_SIZE_512K;
631
632 sr_info("zp: Setting memory size to %dK.",
633 get_memory_size(devc->memory_size) / 1024);
634
635 analyzer_set_memory_size(devc->memory_size);
636
637 return SR_OK;
638}
639
640static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
641{
642 if (ratio > 100) {
643 sr_err("zp: %s: invalid capture ratio", __func__);
644 return SR_ERR_ARG;
645 }
646
647 devc->capture_ratio = ratio;
648
649 sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
650
651 return SR_OK;
652}
653
654static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
655 const void *value)
656{
657 struct dev_context *devc;
658
659 if (!sdi) {
660 sr_err("zp: %s: sdi was NULL", __func__);
661 return SR_ERR_ARG;
662 }
663
664 if (!(devc = sdi->priv)) {
665 sr_err("zp: %s: sdi->priv was NULL", __func__);
666 return SR_ERR_ARG;
667 }
668
669 switch (hwcap) {
670 case SR_HWCAP_SAMPLERATE:
671 return set_samplerate(devc, *(const uint64_t *)value);
672 case SR_HWCAP_LIMIT_SAMPLES:
673 return set_limit_samples(devc, *(const uint64_t *)value);
674 case SR_HWCAP_CAPTURE_RATIO:
675 return set_capture_ratio(devc, *(const uint64_t *)value);
676 default:
677 return SR_ERR;
678 }
679}
680
681static void set_triggerbar(struct dev_context *devc)
682{
683 unsigned int ramsize;
684 unsigned int n;
685 unsigned int triggerbar;
686
687 ramsize = get_memory_size(devc->memory_size) / 4;
688 if (devc->trigger) {
689 n = ramsize;
690 if (devc->max_memory_size < n)
691 n = devc->max_memory_size;
692 if (devc->limit_samples < n)
693 n = devc->limit_samples;
694 n = n * devc->capture_ratio / 100;
695 if (n > ramsize - 8)
696 triggerbar = ramsize - 8;
697 else
698 triggerbar = n;
699 } else {
700 triggerbar = 0;
701 }
702 analyzer_set_triggerbar_address(triggerbar);
703 analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
704
705 sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
706 sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
707 ramsize - triggerbar, ramsize - triggerbar);
708}
709
710static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
711 void *cb_data)
712{
713 struct sr_datafeed_packet packet;
714 struct sr_datafeed_logic logic;
715 struct sr_datafeed_header header;
716 struct sr_datafeed_meta_logic meta;
717 //uint64_t samples_read;
718 int res;
719 unsigned int packet_num;
720 unsigned int n;
721 unsigned char *buf;
722 struct dev_context *devc;
723
724 if (!(devc = sdi->priv)) {
725 sr_err("zp: %s: sdi->priv was NULL", __func__);
726 return SR_ERR_ARG;
727 }
728
729 if (configure_probes(sdi) != SR_OK) {
730 sr_err("zp: failed to configured probes");
731 return SR_ERR;
732 }
733
734 set_triggerbar(devc);
735
736 /* push configured settings to device */
737 analyzer_configure(devc->usb->devhdl);
738
739 analyzer_start(devc->usb->devhdl);
740 sr_info("zp: Waiting for data");
741 analyzer_wait_data(devc->usb->devhdl);
742
743 sr_info("zp: Stop address = 0x%x",
744 analyzer_get_stop_address(devc->usb->devhdl));
745 sr_info("zp: Now address = 0x%x",
746 analyzer_get_now_address(devc->usb->devhdl));
747 sr_info("zp: Trigger address = 0x%x",
748 analyzer_get_trigger_address(devc->usb->devhdl));
749
750 packet.type = SR_DF_HEADER;
751 packet.payload = &header;
752 header.feed_version = 1;
753 gettimeofday(&header.starttime, NULL);
754 sr_session_send(cb_data, &packet);
755
756 /* Send metadata about the SR_DF_LOGIC packets to come. */
757 packet.type = SR_DF_META_LOGIC;
758 packet.payload = &meta;
759 meta.samplerate = devc->cur_samplerate;
760 meta.num_probes = devc->num_channels;
761 sr_session_send(cb_data, &packet);
762
763 if (!(buf = g_try_malloc(PACKET_SIZE))) {
764 sr_err("zp: %s: buf malloc failed", __func__);
765 return SR_ERR_MALLOC;
766 }
767
768 //samples_read = 0;
769 analyzer_read_start(devc->usb->devhdl);
770 /* Send the incoming transfer to the session bus. */
771 n = get_memory_size(devc->memory_size);
772 if (devc->max_memory_size * 4 < n)
773 n = devc->max_memory_size * 4;
774 for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
775 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
776 sr_info("zp: Tried to read %d bytes, actually read %d bytes",
777 PACKET_SIZE, res);
778
779 packet.type = SR_DF_LOGIC;
780 packet.payload = &logic;
781 logic.length = PACKET_SIZE;
782 logic.unitsize = 4;
783 logic.data = buf;
784 sr_session_send(cb_data, &packet);
785 //samples_read += res / 4;
786 }
787 analyzer_read_stop(devc->usb->devhdl);
788 g_free(buf);
789
790 packet.type = SR_DF_END;
791 sr_session_send(cb_data, &packet);
792
793 return SR_OK;
794}
795
796/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
797static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
798{
799 struct sr_datafeed_packet packet;
800 struct dev_context *devc;
801
802 packet.type = SR_DF_END;
803 sr_session_send(cb_data, &packet);
804
805 if (!(devc = sdi->priv)) {
806 sr_err("zp: %s: sdi->priv was NULL", __func__);
807 return SR_ERR_BUG;
808 }
809
810 analyzer_reset(devc->usb->devhdl);
811 /* TODO: Need to cancel and free any queued up transfers. */
812
813 return SR_OK;
814}
815
816SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
817 .name = "zeroplus-logic-cube",
818 .longname = "ZEROPLUS Logic Cube LAP-C series",
819 .api_version = 1,
820 .init = hw_init,
821 .cleanup = hw_cleanup,
822 .scan = hw_scan,
823 .dev_list = hw_dev_list,
824 .dev_clear = hw_cleanup,
825 .dev_open = hw_dev_open,
826 .dev_close = hw_dev_close,
827 .info_get = hw_info_get,
828 .dev_config_set = hw_dev_config_set,
829 .dev_acquisition_start = hw_dev_acquisition_start,
830 .dev_acquisition_stop = hw_dev_acquisition_stop,
831 .priv = NULL,
832};
Hardware access and backend lib