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Add a struct sr_context * parameter to hw_init()
[libsigrok.git] / hardware / zeroplus-logic-cube / zeroplus.c
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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 *zdi = &zeroplus_logic_cube_driver_info;
110
111static libusb_context *usb_context = NULL;
112
113/*
114 * The hardware supports more samplerates than these, but these are the
115 * options hardcoded into the vendor's Windows GUI.
116 */
117
118/*
119 * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
120 * that high.
121 */
122static const uint64_t supported_samplerates[] = {
123 SR_HZ(100),
124 SR_HZ(500),
125 SR_KHZ(1),
126 SR_KHZ(5),
127 SR_KHZ(25),
128 SR_KHZ(50),
129 SR_KHZ(100),
130 SR_KHZ(200),
131 SR_KHZ(400),
132 SR_KHZ(800),
133 SR_MHZ(1),
134 SR_MHZ(10),
135 SR_MHZ(25),
136 SR_MHZ(50),
137 SR_MHZ(80),
138 SR_MHZ(100),
139 SR_MHZ(150),
140 SR_MHZ(200),
141 0,
142};
143
144static const struct sr_samplerates samplerates = {
145 0,
146 0,
147 0,
148 supported_samplerates,
149};
150
151/* Private, per-device-instance driver context. */
152struct dev_context {
153 uint64_t cur_samplerate;
154 uint64_t max_samplerate;
155 uint64_t limit_samples;
156 int num_channels; /* TODO: This isn't initialized before it's needed :( */
157 int memory_size;
158 unsigned int max_memory_size;
159 //uint8_t probe_mask;
160 //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
161 //uint8_t trigger_value[NUM_TRIGGER_STAGES];
162 // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
163 int trigger;
164 unsigned int capture_ratio;
165
166 /* TODO: this belongs in the device instance */
167 struct sr_usb_dev_inst *usb;
168};
169
170static int hw_dev_close(struct sr_dev_inst *sdi);
171
172static unsigned int get_memory_size(int type)
173{
174 if (type == MEMORY_SIZE_8K)
175 return 8 * 1024;
176 else if (type == MEMORY_SIZE_64K)
177 return 64 * 1024;
178 else if (type == MEMORY_SIZE_128K)
179 return 128 * 1024;
180 else if (type == MEMORY_SIZE_512K)
181 return 512 * 1024;
182 else
183 return 0;
184}
185
186#if 0
187static int configure_probes(const struct sr_dev_inst *sdi)
188{
189 struct dev_context *devc;
190 const struct sr_probe *probe;
191 const GSList *l;
192 int probe_bit, stage, i;
193 char *tc;
194
195 /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
196 devc = sdi->priv;
197
198 devc->probe_mask = 0;
199 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
200 devc->trigger_mask[i] = 0;
201 devc->trigger_value[i] = 0;
202 }
203
204 stage = -1;
205 for (l = sdi->probes; l; l = l->next) {
206 probe = (struct sr_probe *)l->data;
207 if (probe->enabled == FALSE)
208 continue;
209 probe_bit = 1 << (probe->index);
210 devc->probe_mask |= probe_bit;
211
212 if (probe->trigger) {
213 stage = 0;
214 for (tc = probe->trigger; *tc; tc++) {
215 devc->trigger_mask[stage] |= probe_bit;
216 if (*tc == '1')
217 devc->trigger_value[stage] |= probe_bit;
218 stage++;
219 if (stage > NUM_TRIGGER_STAGES)
220 return SR_ERR;
221 }
222 }
223 }
224
225 return SR_OK;
226}
227#endif
228
229static int configure_probes(const struct sr_dev_inst *sdi)
230{
231 struct dev_context *devc;
232 const GSList *l;
233 const struct sr_probe *probe;
234 char *tc;
235 int type;
236
237 /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
238 devc = sdi->priv;
239
240 for (l = sdi->probes; l; l = l->next) {
241 probe = (struct sr_probe *)l->data;
242 if (probe->enabled == FALSE)
243 continue;
244
245 if ((tc = probe->trigger)) {
246 switch (*tc) {
247 case '1':
248 type = TRIGGER_HIGH;
249 break;
250 case '0':
251 type = TRIGGER_LOW;
252 break;
253#if 0
254 case 'r':
255 type = TRIGGER_POSEDGE;
256 break;
257 case 'f':
258 type = TRIGGER_NEGEDGE;
259 break;
260 case 'c':
261 type = TRIGGER_ANYEDGE;
262 break;
263#endif
264 default:
265 return SR_ERR;
266 }
267 analyzer_add_trigger(probe->index, type);
268 devc->trigger = 1;
269 }
270 }
271
272 return SR_OK;
273}
274
275static int clear_instances(void)
276{
277 GSList *l;
278 struct sr_dev_inst *sdi;
279 struct drv_context *drvc;
280 struct dev_context *devc;
281
282 drvc = zdi->priv;
283 for (l = drvc->instances; l; l = l->next) {
284 sdi = l->data;
285 if (!(devc = sdi->priv)) {
286 /* Log error, but continue cleaning up the rest. */
287 sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
288 continue;
289 }
290 sr_usb_dev_inst_free(devc->usb);
291 /* Properly close all devices... */
292 hw_dev_close(sdi);
293 /* ...and free all their memory. */
294 sr_dev_inst_free(sdi);
295 }
296 g_slist_free(drvc->instances);
297 drvc->instances = NULL;
298
299 return SR_OK;
300}
301
302/*
303 * API callbacks
304 */
305
306static int hw_init(struct sr_context *sr_ctx)
307{
308 struct drv_context *drvc;
309
310 if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
311 sr_err("zeroplus: driver context malloc failed.");
312 return SR_ERR_MALLOC;
313 }
314 zdi->priv = drvc;
315
316 if (libusb_init(&usb_context) != 0) {
317 sr_err("zp: Failed to initialize USB.");
318 return 0;
319 }
320
321 return SR_OK;
322}
323
324static GSList *hw_scan(GSList *options)
325{
326 struct sr_dev_inst *sdi;
327 struct sr_probe *probe;
328 struct drv_context *drvc;
329 struct dev_context *devc;
330 model_t *prof;
331 struct libusb_device_descriptor des;
332 libusb_device **devlist;
333 GSList *devices;
334 int ret, devcnt, i, j;
335
336 (void)options;
337
338 drvc = zdi->priv;
339 devices = NULL;
340
341 clear_instances();
342
343 /* Find all ZEROPLUS analyzers and add them to device list. */
344 devcnt = 0;
345 libusb_get_device_list(usb_context, &devlist); /* TODO: Errors. */
346
347 for (i = 0; devlist[i]; i++) {
348 ret = libusb_get_device_descriptor(devlist[i], &des);
349 if (ret != 0) {
350 sr_err("zp: failed to get device descriptor: %d", ret);
351 continue;
352 }
353
354 prof = NULL;
355 for (j = 0; j < zeroplus_models[j].vid; j++) {
356 if (des.idVendor == zeroplus_models[j].vid &&
357 des.idProduct == zeroplus_models[j].pid) {
358 prof = &zeroplus_models[j];
359 }
360 }
361 /* Skip if the device was not found */
362 if (!prof)
363 continue;
364 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
365
366 /* Register the device with libsigrok. */
367 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
368 VENDOR_NAME, prof->model_name, NULL))) {
369 sr_err("zp: %s: sr_dev_inst_new failed", __func__);
370 return NULL;
371 }
372 sdi->driver = zdi;
373
374 /* Allocate memory for our private driver context. */
375 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
376 sr_err("zp: %s: devc malloc failed", __func__);
377 return NULL;
378 }
379 sdi->priv = devc;
380 devc->num_channels = prof->channels;
381#ifdef ZP_EXPERIMENTAL
382 devc->max_memory_size = 128 * 1024;
383 devc->max_samplerate = 200;
384#else
385 devc->max_memory_size = prof->sample_depth * 1024;
386 devc->max_samplerate = prof->max_sampling_freq;
387#endif
388 devc->max_samplerate *= SR_MHZ(1);
389 devc->memory_size = MEMORY_SIZE_8K;
390 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
391
392 /* Fill in probelist according to this device's profile. */
393 for (j = 0; j < devc->num_channels; j++) {
394 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
395 probe_names[j])))
396 return NULL;
397 sdi->probes = g_slist_append(sdi->probes, probe);
398 }
399
400 devices = g_slist_append(devices, sdi);
401 drvc->instances = g_slist_append(drvc->instances, sdi);
402 devc->usb = sr_usb_dev_inst_new(
403 libusb_get_bus_number(devlist[i]),
404 libusb_get_device_address(devlist[i]), NULL);
405 devcnt++;
406
407 }
408 libusb_free_device_list(devlist, 1);
409
410 return devices;
411}
412
413static GSList *hw_dev_list(void)
414{
415 struct drv_context *drvc;
416
417 drvc = zdi->priv;
418
419 return drvc->instances;
420}
421
422static int hw_dev_open(struct sr_dev_inst *sdi)
423{
424 struct dev_context *devc;
425 libusb_device **devlist, *dev;
426 struct libusb_device_descriptor des;
427 int device_count, ret, i;
428
429 if (!(devc = sdi->priv)) {
430 sr_err("zp: %s: sdi->priv was NULL", __func__);
431 return SR_ERR_ARG;
432 }
433
434 device_count = libusb_get_device_list(usb_context, &devlist);
435 if (device_count < 0) {
436 sr_err("zp: Failed to retrieve device list");
437 return SR_ERR;
438 }
439
440 dev = NULL;
441 for (i = 0; i < device_count; i++) {
442 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
443 sr_err("fx2lafw: Failed to get device descriptor: %d.",
444 ret);
445 continue;
446 }
447 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
448 && libusb_get_device_address(devlist[i]) == devc->usb->address) {
449 dev = devlist[i];
450 break;
451 }
452 }
453 if (!dev) {
454 sr_err("device on bus %d address %d disappeared!",
455 devc->usb->bus, devc->usb->address);
456 return SR_ERR;
457 }
458
459 if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
460 sdi->status = SR_ST_ACTIVE;
461 sr_info("zp: opened device %d on %d.%d interface %d",
462 sdi->index, devc->usb->bus,
463 devc->usb->address, USB_INTERFACE);
464 } else {
465 sr_err("zp: failed to open device: %d", ret);
466 return SR_ERR;
467 }
468
469 ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
470 if (ret < 0) {
471 sr_err("zp: Unable to set USB configuration %d: %d",
472 USB_CONFIGURATION, ret);
473 return SR_ERR;
474 }
475
476 ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
477 if (ret != 0) {
478 sr_err("zp: Unable to claim interface: %d", ret);
479 return SR_ERR;
480 }
481
482 /* Set default configuration after power on */
483 if (analyzer_read_status(devc->usb->devhdl) == 0)
484 analyzer_configure(devc->usb->devhdl);
485
486 analyzer_reset(devc->usb->devhdl);
487 analyzer_initialize(devc->usb->devhdl);
488
489 //analyzer_set_memory_size(MEMORY_SIZE_512K);
490 // analyzer_set_freq(g_freq, g_freq_scale);
491 analyzer_set_trigger_count(1);
492 // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
493 // * get_memory_size(g_memory_size)) / 100) >> 2);
494
495#if 0
496 if (g_double_mode == 1)
497 analyzer_set_compression(COMPRESSION_DOUBLE);
498 else if (g_compression == 1)
499 analyzer_set_compression(COMPRESSION_ENABLE);
500 else
501#endif
502 analyzer_set_compression(COMPRESSION_NONE);
503
504 if (devc->cur_samplerate == 0) {
505 /* Samplerate hasn't been set. Default to 1MHz. */
506 analyzer_set_freq(1, FREQ_SCALE_MHZ);
507 devc->cur_samplerate = SR_MHZ(1);
508 }
509
510 return SR_OK;
511}
512
513static int hw_dev_close(struct sr_dev_inst *sdi)
514{
515 struct dev_context *devc;
516
517 if (!(devc = sdi->priv)) {
518 sr_err("zp: %s: sdi->priv was NULL", __func__);
519 return SR_ERR;
520 }
521
522 if (!devc->usb->devhdl)
523 return SR_ERR;
524
525 sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
526 devc->usb->bus, devc->usb->address, USB_INTERFACE);
527 libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
528 libusb_reset_device(devc->usb->devhdl);
529 libusb_close(devc->usb->devhdl);
530 devc->usb->devhdl = NULL;
531 sdi->status = SR_ST_INACTIVE;
532
533 return SR_OK;
534}
535
536static int hw_cleanup(void)
537{
538 struct drv_context *drvc;
539
540 if (!(drvc = zdi->priv))
541 return SR_OK;
542
543 clear_instances();
544
545 if (usb_context)
546 libusb_exit(usb_context);
547 usb_context = NULL;
548
549 return SR_OK;
550}
551
552static int hw_info_get(int info_id, const void **data,
553 const struct sr_dev_inst *sdi)
554{
555 struct dev_context *devc;
556
557 switch (info_id) {
558 case SR_DI_HWCAPS:
559 *data = hwcaps;
560 break;
561 case SR_DI_NUM_PROBES:
562 if (sdi) {
563 devc = sdi->priv;
564 *data = GINT_TO_POINTER(devc->num_channels);
565 sr_spew("zp: %s: Returning number of channels: %d.",
566 __func__, devc->num_channels);
567 } else
568 return SR_ERR;
569 break;
570 case SR_DI_PROBE_NAMES:
571 *data = probe_names;
572 sr_spew("zp: %s: Returning probenames.", __func__);
573 break;
574 case SR_DI_SAMPLERATES:
575 *data = &samplerates;
576 sr_spew("zp: %s: Returning samplerates.", __func__);
577 break;
578 case SR_DI_TRIGGER_TYPES:
579 *data = TRIGGER_TYPES;
580 sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
581 break;
582 case SR_DI_CUR_SAMPLERATE:
583 if (sdi) {
584 devc = sdi->priv;
585 *data = &devc->cur_samplerate;
586 sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
587 __func__, devc->cur_samplerate);
588 } else
589 return SR_ERR;
590 break;
591 default:
592 return SR_ERR_ARG;
593 }
594
595 return SR_OK;
596}
597
598static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
599{
600 int i;
601
602 for (i = 0; supported_samplerates[i]; i++)
603 if (samplerate == supported_samplerates[i])
604 break;
605 if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
606 sr_err("zp: %s: unsupported samplerate", __func__);
607 return SR_ERR_ARG;
608 }
609
610 sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
611
612 if (samplerate >= SR_MHZ(1))
613 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
614 else if (samplerate >= SR_KHZ(1))
615 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
616 else
617 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
618
619 devc->cur_samplerate = samplerate;
620
621 return SR_OK;
622}
623
624static int set_limit_samples(struct dev_context *devc, uint64_t samples)
625{
626 devc->limit_samples = samples;
627
628 if (samples <= 2 * 1024)
629 devc->memory_size = MEMORY_SIZE_8K;
630 else if (samples <= 16 * 1024)
631 devc->memory_size = MEMORY_SIZE_64K;
632 else if (samples <= 32 * 1024 ||
633 devc->max_memory_size <= 32 * 1024)
634 devc->memory_size = MEMORY_SIZE_128K;
635 else
636 devc->memory_size = MEMORY_SIZE_512K;
637
638 sr_info("zp: Setting memory size to %dK.",
639 get_memory_size(devc->memory_size) / 1024);
640
641 analyzer_set_memory_size(devc->memory_size);
642
643 return SR_OK;
644}
645
646static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
647{
648 if (ratio > 100) {
649 sr_err("zp: %s: invalid capture ratio", __func__);
650 return SR_ERR_ARG;
651 }
652
653 devc->capture_ratio = ratio;
654
655 sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
656
657 return SR_OK;
658}
659
660static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
661 const void *value)
662{
663 struct dev_context *devc;
664
665 if (!sdi) {
666 sr_err("zp: %s: sdi was NULL", __func__);
667 return SR_ERR_ARG;
668 }
669
670 if (!(devc = sdi->priv)) {
671 sr_err("zp: %s: sdi->priv was NULL", __func__);
672 return SR_ERR_ARG;
673 }
674
675 switch (hwcap) {
676 case SR_HWCAP_SAMPLERATE:
677 return set_samplerate(devc, *(const uint64_t *)value);
678 case SR_HWCAP_LIMIT_SAMPLES:
679 return set_limit_samples(devc, *(const uint64_t *)value);
680 case SR_HWCAP_CAPTURE_RATIO:
681 return set_capture_ratio(devc, *(const uint64_t *)value);
682 default:
683 return SR_ERR;
684 }
685}
686
687static void set_triggerbar(struct dev_context *devc)
688{
689 unsigned int ramsize;
690 unsigned int n;
691 unsigned int triggerbar;
692
693 ramsize = get_memory_size(devc->memory_size) / 4;
694 if (devc->trigger) {
695 n = ramsize;
696 if (devc->max_memory_size < n)
697 n = devc->max_memory_size;
698 if (devc->limit_samples < n)
699 n = devc->limit_samples;
700 n = n * devc->capture_ratio / 100;
701 if (n > ramsize - 8)
702 triggerbar = ramsize - 8;
703 else
704 triggerbar = n;
705 } else {
706 triggerbar = 0;
707 }
708 analyzer_set_triggerbar_address(triggerbar);
709 analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
710
711 sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
712 sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
713 ramsize - triggerbar, ramsize - triggerbar);
714}
715
716static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
717 void *cb_data)
718{
719 struct sr_datafeed_packet packet;
720 struct sr_datafeed_logic logic;
721 struct sr_datafeed_header header;
722 struct sr_datafeed_meta_logic meta;
723 //uint64_t samples_read;
724 int res;
725 unsigned int packet_num;
726 unsigned int n;
727 unsigned char *buf;
728 struct dev_context *devc;
729
730 if (!(devc = sdi->priv)) {
731 sr_err("zp: %s: sdi->priv was NULL", __func__);
732 return SR_ERR_ARG;
733 }
734
735 if (configure_probes(sdi) != SR_OK) {
736 sr_err("zp: failed to configured probes");
737 return SR_ERR;
738 }
739
740 set_triggerbar(devc);
741
742 /* push configured settings to device */
743 analyzer_configure(devc->usb->devhdl);
744
745 analyzer_start(devc->usb->devhdl);
746 sr_info("zp: Waiting for data");
747 analyzer_wait_data(devc->usb->devhdl);
748
749 sr_info("zp: Stop address = 0x%x",
750 analyzer_get_stop_address(devc->usb->devhdl));
751 sr_info("zp: Now address = 0x%x",
752 analyzer_get_now_address(devc->usb->devhdl));
753 sr_info("zp: Trigger address = 0x%x",
754 analyzer_get_trigger_address(devc->usb->devhdl));
755
756 packet.type = SR_DF_HEADER;
757 packet.payload = &header;
758 header.feed_version = 1;
759 gettimeofday(&header.starttime, NULL);
760 sr_session_send(cb_data, &packet);
761
762 /* Send metadata about the SR_DF_LOGIC packets to come. */
763 packet.type = SR_DF_META_LOGIC;
764 packet.payload = &meta;
765 meta.samplerate = devc->cur_samplerate;
766 meta.num_probes = devc->num_channels;
767 sr_session_send(cb_data, &packet);
768
769 if (!(buf = g_try_malloc(PACKET_SIZE))) {
770 sr_err("zp: %s: buf malloc failed", __func__);
771 return SR_ERR_MALLOC;
772 }
773
774 //samples_read = 0;
775 analyzer_read_start(devc->usb->devhdl);
776 /* Send the incoming transfer to the session bus. */
777 n = get_memory_size(devc->memory_size);
778 if (devc->max_memory_size * 4 < n)
779 n = devc->max_memory_size * 4;
780 for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
781 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
782 sr_info("zp: Tried to read %d bytes, actually read %d bytes",
783 PACKET_SIZE, res);
784
785 packet.type = SR_DF_LOGIC;
786 packet.payload = &logic;
787 logic.length = PACKET_SIZE;
788 logic.unitsize = 4;
789 logic.data = buf;
790 sr_session_send(cb_data, &packet);
791 //samples_read += res / 4;
792 }
793 analyzer_read_stop(devc->usb->devhdl);
794 g_free(buf);
795
796 packet.type = SR_DF_END;
797 sr_session_send(cb_data, &packet);
798
799 return SR_OK;
800}
801
802/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
803static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
804{
805 struct sr_datafeed_packet packet;
806 struct dev_context *devc;
807
808 packet.type = SR_DF_END;
809 sr_session_send(cb_data, &packet);
810
811 if (!(devc = sdi->priv)) {
812 sr_err("zp: %s: sdi->priv was NULL", __func__);
813 return SR_ERR_BUG;
814 }
815
816 analyzer_reset(devc->usb->devhdl);
817 /* TODO: Need to cancel and free any queued up transfers. */
818
819 return SR_OK;
820}
821
822SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
823 .name = "zeroplus-logic-cube",
824 .longname = "ZEROPLUS Logic Cube LAP-C series",
825 .api_version = 1,
826 .init = hw_init,
827 .cleanup = hw_cleanup,
828 .scan = hw_scan,
829 .dev_list = hw_dev_list,
830 .dev_clear = hw_cleanup,
831 .dev_open = hw_dev_open,
832 .dev_close = hw_dev_close,
833 .info_get = hw_info_get,
834 .dev_config_set = hw_dev_config_set,
835 .dev_acquisition_start = hw_dev_acquisition_start,
836 .dev_acquisition_stop = hw_dev_acquisition_stop,
837 .priv = NULL,
838};
Hardware access and backend lib