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1 | /* | |
2 | * This file is part of the libsigrok 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 <config.h> | |
21 | #include "protocol.h" | |
22 | ||
23 | #define USB_INTERFACE 0 | |
24 | #define USB_CONFIGURATION 1 | |
25 | #define NUM_TRIGGER_STAGES 4 | |
26 | #define PACKET_SIZE 2048 /* ?? */ | |
27 | ||
28 | //#define ZP_EXPERIMENTAL | |
29 | ||
30 | struct zp_model { | |
31 | uint16_t vid; | |
32 | uint16_t pid; | |
33 | const char *model_name; | |
34 | unsigned int channels; | |
35 | unsigned int sample_depth; /* In Ksamples/channel */ | |
36 | unsigned int max_sampling_freq; | |
37 | }; | |
38 | ||
39 | /* | |
40 | * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the | |
41 | * same 128K sample depth. | |
42 | */ | |
43 | static const struct zp_model zeroplus_models[] = { | |
44 | {0x0c12, 0x7002, "LAP-16128U", 16, 128, 200}, | |
45 | {0x0c12, 0x7007, "LAP-16032U", 16, 32, 200}, | |
46 | {0x0c12, 0x7009, "LAP-C(16064)", 16, 64, 100}, | |
47 | {0x0c12, 0x700a, "LAP-C(16128)", 16, 128, 200}, | |
48 | {0x0c12, 0x700b, "LAP-C(32128)", 32, 128, 200}, | |
49 | {0x0c12, 0x700c, "LAP-C(321000)", 32, 1024, 200}, | |
50 | {0x0c12, 0x700d, "LAP-C(322000)", 32, 2048, 200}, | |
51 | {0x0c12, 0x700e, "LAP-C(16032)", 16, 32, 100}, | |
52 | {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200}, | |
53 | {0x0c12, 0x7025, "LAP-C(16128+)", 16, 128, 200}, | |
54 | {0x0c12, 0x7064, "Logian-16L", 16, 128, 200}, | |
55 | {0x0c12, 0x7100, "AKIP-9101", 16, 256, 200}, | |
56 | ALL_ZERO | |
57 | }; | |
58 | ||
59 | static const uint32_t drvopts[] = { | |
60 | SR_CONF_LOGIC_ANALYZER, | |
61 | }; | |
62 | ||
63 | static const uint32_t devopts[] = { | |
64 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST, | |
65 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
66 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
67 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
68 | SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
69 | }; | |
70 | ||
71 | static const int32_t trigger_matches[] = { | |
72 | SR_TRIGGER_ZERO, | |
73 | SR_TRIGGER_ONE, | |
74 | SR_TRIGGER_RISING, | |
75 | SR_TRIGGER_FALLING, | |
76 | SR_TRIGGER_EDGE, | |
77 | }; | |
78 | ||
79 | /* | |
80 | * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7. | |
81 | * We currently ignore other untested/unsupported devices here. | |
82 | */ | |
83 | static const char *channel_names[] = { | |
84 | "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", | |
85 | "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", | |
86 | "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", | |
87 | "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", | |
88 | }; | |
89 | ||
90 | /* | |
91 | * The hardware supports more samplerates than these, but these are the | |
92 | * options hardcoded into the vendor's Windows GUI. | |
93 | */ | |
94 | ||
95 | static const uint64_t samplerates_100[] = { | |
96 | SR_HZ(100), | |
97 | SR_HZ(500), | |
98 | SR_KHZ(1), | |
99 | SR_KHZ(5), | |
100 | SR_KHZ(25), | |
101 | SR_KHZ(50), | |
102 | SR_KHZ(100), | |
103 | SR_KHZ(200), | |
104 | SR_KHZ(400), | |
105 | SR_KHZ(800), | |
106 | SR_MHZ(1), | |
107 | SR_MHZ(10), | |
108 | SR_MHZ(25), | |
109 | SR_MHZ(50), | |
110 | SR_MHZ(80), | |
111 | SR_MHZ(100), | |
112 | }; | |
113 | ||
114 | const uint64_t samplerates_200[] = { | |
115 | SR_HZ(100), | |
116 | SR_HZ(500), | |
117 | SR_KHZ(1), | |
118 | SR_KHZ(5), | |
119 | SR_KHZ(25), | |
120 | SR_KHZ(50), | |
121 | SR_KHZ(100), | |
122 | SR_KHZ(200), | |
123 | SR_KHZ(400), | |
124 | SR_KHZ(800), | |
125 | SR_MHZ(1), | |
126 | SR_MHZ(10), | |
127 | SR_MHZ(25), | |
128 | SR_MHZ(50), | |
129 | SR_MHZ(80), | |
130 | SR_MHZ(100), | |
131 | SR_MHZ(150), | |
132 | SR_MHZ(200), | |
133 | }; | |
134 | ||
135 | SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate) | |
136 | { | |
137 | int i; | |
138 | ||
139 | for (i = 0; ARRAY_SIZE(samplerates_200); i++) | |
140 | if (samplerate == samplerates_200[i]) | |
141 | break; | |
142 | ||
143 | if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) { | |
144 | sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate); | |
145 | return SR_ERR_ARG; | |
146 | } | |
147 | ||
148 | sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate); | |
149 | ||
150 | if (samplerate >= SR_MHZ(1)) | |
151 | analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ); | |
152 | else if (samplerate >= SR_KHZ(1)) | |
153 | analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ); | |
154 | else | |
155 | analyzer_set_freq(samplerate, FREQ_SCALE_HZ); | |
156 | ||
157 | devc->cur_samplerate = samplerate; | |
158 | ||
159 | return SR_OK; | |
160 | } | |
161 | ||
162 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
163 | { | |
164 | struct sr_dev_inst *sdi; | |
165 | struct drv_context *drvc; | |
166 | struct dev_context *devc; | |
167 | const struct zp_model *prof; | |
168 | struct libusb_device_descriptor des; | |
169 | struct libusb_device_handle *hdl; | |
170 | libusb_device **devlist; | |
171 | GSList *devices; | |
172 | int ret, i, j; | |
173 | char serial_num[64], connection_id[64]; | |
174 | ||
175 | (void)options; | |
176 | ||
177 | drvc = di->context; | |
178 | ||
179 | devices = NULL; | |
180 | ||
181 | /* Find all ZEROPLUS analyzers and add them to device list. */ | |
182 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */ | |
183 | ||
184 | for (i = 0; devlist[i]; i++) { | |
185 | libusb_get_device_descriptor(devlist[i], &des); | |
186 | ||
187 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
188 | continue; | |
189 | ||
190 | if (des.iSerialNumber == 0) { | |
191 | serial_num[0] = '\0'; | |
192 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
193 | des.iSerialNumber, (unsigned char *) serial_num, | |
194 | sizeof(serial_num))) < 0) { | |
195 | sr_warn("Failed to get serial number string descriptor: %s.", | |
196 | libusb_error_name(ret)); | |
197 | continue; | |
198 | } | |
199 | ||
200 | libusb_close(hdl); | |
201 | ||
202 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) | |
203 | continue; | |
204 | ||
205 | prof = NULL; | |
206 | for (j = 0; j < zeroplus_models[j].vid; j++) { | |
207 | if (des.idVendor == zeroplus_models[j].vid && | |
208 | des.idProduct == zeroplus_models[j].pid) { | |
209 | prof = &zeroplus_models[j]; | |
210 | } | |
211 | } | |
212 | ||
213 | if (!prof) | |
214 | continue; | |
215 | sr_info("Found ZEROPLUS %s.", prof->model_name); | |
216 | ||
217 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
218 | sdi->status = SR_ST_INACTIVE; | |
219 | sdi->vendor = g_strdup("ZEROPLUS"); | |
220 | sdi->model = g_strdup(prof->model_name); | |
221 | sdi->serial_num = g_strdup(serial_num); | |
222 | sdi->connection_id = g_strdup(connection_id); | |
223 | ||
224 | devc = g_malloc0(sizeof(struct dev_context)); | |
225 | sdi->priv = devc; | |
226 | devc->prof = prof; | |
227 | devc->num_channels = prof->channels; | |
228 | #ifdef ZP_EXPERIMENTAL | |
229 | devc->max_sample_depth = 128 * 1024; | |
230 | devc->max_samplerate = 200; | |
231 | #else | |
232 | devc->max_sample_depth = prof->sample_depth * 1024; | |
233 | devc->max_samplerate = prof->max_sampling_freq; | |
234 | #endif | |
235 | devc->max_samplerate *= SR_MHZ(1); | |
236 | devc->memory_size = MEMORY_SIZE_8K; | |
237 | // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES); | |
238 | ||
239 | for (j = 0; j < devc->num_channels; j++) | |
240 | sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, | |
241 | channel_names[j]); | |
242 | ||
243 | devices = g_slist_append(devices, sdi); | |
244 | sdi->inst_type = SR_INST_USB; | |
245 | sdi->conn = sr_usb_dev_inst_new( | |
246 | libusb_get_bus_number(devlist[i]), | |
247 | libusb_get_device_address(devlist[i]), NULL); | |
248 | } | |
249 | libusb_free_device_list(devlist, 1); | |
250 | ||
251 | return std_scan_complete(di, devices); | |
252 | } | |
253 | ||
254 | static int dev_open(struct sr_dev_inst *sdi) | |
255 | { | |
256 | struct sr_dev_driver *di = sdi->driver; | |
257 | struct dev_context *devc; | |
258 | struct drv_context *drvc; | |
259 | struct sr_usb_dev_inst *usb; | |
260 | int ret; | |
261 | ||
262 | drvc = di->context; | |
263 | usb = sdi->conn; | |
264 | devc = sdi->priv; | |
265 | ||
266 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
267 | if (ret != SR_OK) | |
268 | return ret; | |
269 | ||
270 | ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION); | |
271 | if (ret < 0) { | |
272 | sr_err("Unable to set USB configuration %d: %s.", | |
273 | USB_CONFIGURATION, libusb_error_name(ret)); | |
274 | return SR_ERR; | |
275 | } | |
276 | ||
277 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
278 | if (ret != 0) { | |
279 | sr_err("Unable to claim interface: %s.", | |
280 | libusb_error_name(ret)); | |
281 | return SR_ERR; | |
282 | } | |
283 | ||
284 | /* Set default configuration after power on. */ | |
285 | if (analyzer_read_status(usb->devhdl) == 0) | |
286 | analyzer_configure(usb->devhdl); | |
287 | ||
288 | analyzer_reset(usb->devhdl); | |
289 | analyzer_initialize(usb->devhdl); | |
290 | ||
291 | //analyzer_set_memory_size(MEMORY_SIZE_512K); | |
292 | // analyzer_set_freq(g_freq, g_freq_scale); | |
293 | analyzer_set_trigger_count(1); | |
294 | // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger) | |
295 | // * get_memory_size(g_memory_size)) / 100) >> 2); | |
296 | ||
297 | #if 0 | |
298 | if (g_double_mode == 1) | |
299 | analyzer_set_compression(COMPRESSION_DOUBLE); | |
300 | else if (g_compression == 1) | |
301 | analyzer_set_compression(COMPRESSION_ENABLE); | |
302 | else | |
303 | #endif | |
304 | analyzer_set_compression(COMPRESSION_NONE); | |
305 | ||
306 | if (devc->cur_samplerate == 0) { | |
307 | /* Samplerate hasn't been set. Default to 1MHz. */ | |
308 | analyzer_set_freq(1, FREQ_SCALE_MHZ); | |
309 | devc->cur_samplerate = SR_MHZ(1); | |
310 | } | |
311 | ||
312 | if (devc->cur_threshold == 0) | |
313 | set_voltage_threshold(devc, 1.5); | |
314 | ||
315 | return SR_OK; | |
316 | } | |
317 | ||
318 | static int dev_close(struct sr_dev_inst *sdi) | |
319 | { | |
320 | struct sr_usb_dev_inst *usb; | |
321 | ||
322 | usb = sdi->conn; | |
323 | ||
324 | if (!usb->devhdl) | |
325 | return SR_ERR_BUG; | |
326 | ||
327 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
328 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
329 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
330 | libusb_reset_device(usb->devhdl); | |
331 | libusb_close(usb->devhdl); | |
332 | usb->devhdl = NULL; | |
333 | ||
334 | return SR_OK; | |
335 | } | |
336 | ||
337 | static int config_get(uint32_t key, GVariant **data, | |
338 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
339 | { | |
340 | struct dev_context *devc; | |
341 | ||
342 | (void)cg; | |
343 | ||
344 | if (!sdi) | |
345 | return SR_ERR_ARG; | |
346 | ||
347 | devc = sdi->priv; | |
348 | ||
349 | switch (key) { | |
350 | case SR_CONF_SAMPLERATE: | |
351 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
352 | break; | |
353 | case SR_CONF_CAPTURE_RATIO: | |
354 | *data = g_variant_new_uint64(devc->capture_ratio); | |
355 | break; | |
356 | case SR_CONF_VOLTAGE_THRESHOLD: | |
357 | *data = std_gvar_tuple_double(devc->cur_threshold, devc->cur_threshold); | |
358 | break; | |
359 | default: | |
360 | return SR_ERR_NA; | |
361 | } | |
362 | ||
363 | return SR_OK; | |
364 | } | |
365 | ||
366 | static int config_set(uint32_t key, GVariant *data, | |
367 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
368 | { | |
369 | struct dev_context *devc; | |
370 | gdouble low, high; | |
371 | ||
372 | (void)cg; | |
373 | ||
374 | devc = sdi->priv; | |
375 | ||
376 | switch (key) { | |
377 | case SR_CONF_SAMPLERATE: | |
378 | return zp_set_samplerate(devc, g_variant_get_uint64(data)); | |
379 | case SR_CONF_LIMIT_SAMPLES: | |
380 | return set_limit_samples(devc, g_variant_get_uint64(data)); | |
381 | case SR_CONF_CAPTURE_RATIO: | |
382 | devc->capture_ratio = g_variant_get_uint64(data); | |
383 | break; | |
384 | case SR_CONF_VOLTAGE_THRESHOLD: | |
385 | g_variant_get(data, "(dd)", &low, &high); | |
386 | return set_voltage_threshold(devc, (low + high) / 2.0); | |
387 | default: | |
388 | return SR_ERR_NA; | |
389 | } | |
390 | ||
391 | return SR_OK; | |
392 | } | |
393 | ||
394 | static int config_list(uint32_t key, GVariant **data, | |
395 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
396 | { | |
397 | struct dev_context *devc; | |
398 | ||
399 | switch (key) { | |
400 | case SR_CONF_DEVICE_OPTIONS: | |
401 | return STD_CONFIG_LIST(key, data, sdi, cg, NO_OPTS, drvopts, devopts); | |
402 | case SR_CONF_SAMPLERATE: | |
403 | devc = sdi->priv; | |
404 | if (devc->prof->max_sampling_freq == 100) | |
405 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_100)); | |
406 | else if (devc->prof->max_sampling_freq == 200) | |
407 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates_200)); | |
408 | else { | |
409 | sr_err("Internal error: Unknown max. samplerate: %d.", | |
410 | devc->prof->max_sampling_freq); | |
411 | return SR_ERR_ARG; | |
412 | } | |
413 | break; | |
414 | case SR_CONF_TRIGGER_MATCH: | |
415 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); | |
416 | break; | |
417 | case SR_CONF_VOLTAGE_THRESHOLD: | |
418 | *data = std_gvar_min_max_step_thresholds(-6.0, 6.0, 0.1); | |
419 | break; | |
420 | case SR_CONF_LIMIT_SAMPLES: | |
421 | if (!sdi) | |
422 | return SR_ERR_ARG; | |
423 | devc = sdi->priv; | |
424 | *data = std_gvar_tuple_u64(0, devc->max_sample_depth); | |
425 | break; | |
426 | default: | |
427 | return SR_ERR_NA; | |
428 | } | |
429 | ||
430 | return SR_OK; | |
431 | } | |
432 | ||
433 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
434 | { | |
435 | struct dev_context *devc; | |
436 | struct sr_usb_dev_inst *usb; | |
437 | struct sr_datafeed_packet packet; | |
438 | struct sr_datafeed_logic logic; | |
439 | unsigned int samples_read; | |
440 | int res; | |
441 | unsigned int packet_num, n; | |
442 | unsigned char *buf; | |
443 | unsigned int status; | |
444 | unsigned int stop_address; | |
445 | unsigned int now_address; | |
446 | unsigned int trigger_address; | |
447 | unsigned int trigger_offset; | |
448 | unsigned int triggerbar; | |
449 | unsigned int ramsize_trigger; | |
450 | unsigned int memory_size; | |
451 | unsigned int valid_samples; | |
452 | unsigned int discard; | |
453 | int trigger_now; | |
454 | ||
455 | devc = sdi->priv; | |
456 | ||
457 | if (analyzer_add_triggers(sdi) != SR_OK) { | |
458 | sr_err("Failed to configure triggers."); | |
459 | return SR_ERR; | |
460 | } | |
461 | ||
462 | usb = sdi->conn; | |
463 | ||
464 | set_triggerbar(devc); | |
465 | ||
466 | /* Push configured settings to device. */ | |
467 | analyzer_configure(usb->devhdl); | |
468 | ||
469 | analyzer_start(usb->devhdl); | |
470 | sr_info("Waiting for data."); | |
471 | analyzer_wait_data(usb->devhdl); | |
472 | ||
473 | status = analyzer_read_status(usb->devhdl); | |
474 | stop_address = analyzer_get_stop_address(usb->devhdl); | |
475 | now_address = analyzer_get_now_address(usb->devhdl); | |
476 | trigger_address = analyzer_get_trigger_address(usb->devhdl); | |
477 | ||
478 | triggerbar = analyzer_get_triggerbar_address(); | |
479 | ramsize_trigger = analyzer_get_ramsize_trigger_address(); | |
480 | ||
481 | n = get_memory_size(devc->memory_size); | |
482 | memory_size = n / 4; | |
483 | ||
484 | sr_info("Status = 0x%x.", status); | |
485 | sr_info("Stop address = 0x%x.", stop_address); | |
486 | sr_info("Now address = 0x%x.", now_address); | |
487 | sr_info("Trigger address = 0x%x.", trigger_address); | |
488 | sr_info("Triggerbar address = 0x%x.", triggerbar); | |
489 | sr_info("Ramsize trigger = 0x%x.", ramsize_trigger); | |
490 | sr_info("Memory size = 0x%x.", memory_size); | |
491 | ||
492 | std_session_send_df_header(sdi); | |
493 | ||
494 | /* Check for empty capture */ | |
495 | if ((status & STATUS_READY) && !stop_address) { | |
496 | std_session_send_df_end(sdi); | |
497 | return SR_OK; | |
498 | } | |
499 | ||
500 | buf = g_malloc(PACKET_SIZE); | |
501 | ||
502 | /* Check if the trigger is in the samples we are throwing away */ | |
503 | trigger_now = now_address == trigger_address || | |
504 | ((now_address + 1) % memory_size) == trigger_address; | |
505 | ||
506 | /* | |
507 | * STATUS_READY doesn't clear until now_address advances past | |
508 | * addr 0, but for our logic, clear it in that case | |
509 | */ | |
510 | if (!now_address) | |
511 | status &= ~STATUS_READY; | |
512 | ||
513 | analyzer_read_start(usb->devhdl); | |
514 | ||
515 | /* Calculate how much data to discard */ | |
516 | discard = 0; | |
517 | if (status & STATUS_READY) { | |
518 | /* | |
519 | * We haven't wrapped around, we need to throw away data from | |
520 | * our current position to the end of the buffer. | |
521 | * Additionally, the first two samples captured are always | |
522 | * bogus. | |
523 | */ | |
524 | discard += memory_size - now_address + 2; | |
525 | now_address = 2; | |
526 | } | |
527 | ||
528 | /* If we have more samples than we need, discard them */ | |
529 | valid_samples = (stop_address - now_address) % memory_size; | |
530 | if (valid_samples > ramsize_trigger + triggerbar) { | |
531 | discard += valid_samples - (ramsize_trigger + triggerbar); | |
532 | now_address += valid_samples - (ramsize_trigger + triggerbar); | |
533 | } | |
534 | ||
535 | sr_info("Need to discard %d samples.", discard); | |
536 | ||
537 | /* Calculate how far in the trigger is */ | |
538 | if (trigger_now) | |
539 | trigger_offset = 0; | |
540 | else | |
541 | trigger_offset = (trigger_address - now_address) % memory_size; | |
542 | ||
543 | /* Recalculate the number of samples available */ | |
544 | valid_samples = (stop_address - now_address) % memory_size; | |
545 | ||
546 | /* Send the incoming transfer to the session bus. */ | |
547 | samples_read = 0; | |
548 | for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) { | |
549 | unsigned int len; | |
550 | unsigned int buf_offset; | |
551 | ||
552 | res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE); | |
553 | if (res != PACKET_SIZE) | |
554 | sr_warn("Tried to read %d bytes, actually read %d.", | |
555 | PACKET_SIZE, res); | |
556 | ||
557 | if (discard >= PACKET_SIZE / 4) { | |
558 | discard -= PACKET_SIZE / 4; | |
559 | continue; | |
560 | } | |
561 | ||
562 | len = PACKET_SIZE - discard * 4; | |
563 | buf_offset = discard * 4; | |
564 | discard = 0; | |
565 | ||
566 | /* Check if we've read all the samples */ | |
567 | if (samples_read + len / 4 >= valid_samples) | |
568 | len = (valid_samples - samples_read) * 4; | |
569 | if (!len) | |
570 | break; | |
571 | ||
572 | if (samples_read < trigger_offset && | |
573 | samples_read + len / 4 > trigger_offset) { | |
574 | /* Send out samples remaining before trigger */ | |
575 | packet.type = SR_DF_LOGIC; | |
576 | packet.payload = &logic; | |
577 | logic.length = (trigger_offset - samples_read) * 4; | |
578 | logic.unitsize = 4; | |
579 | logic.data = buf + buf_offset; | |
580 | sr_session_send(sdi, &packet); | |
581 | len -= logic.length; | |
582 | samples_read += logic.length / 4; | |
583 | buf_offset += logic.length; | |
584 | } | |
585 | ||
586 | if (samples_read == trigger_offset) | |
587 | std_session_send_df_trigger(sdi); | |
588 | ||
589 | /* Send out data (or data after trigger) */ | |
590 | packet.type = SR_DF_LOGIC; | |
591 | packet.payload = &logic; | |
592 | logic.length = len; | |
593 | logic.unitsize = 4; | |
594 | logic.data = buf + buf_offset; | |
595 | sr_session_send(sdi, &packet); | |
596 | samples_read += len / 4; | |
597 | } | |
598 | analyzer_read_stop(usb->devhdl); | |
599 | g_free(buf); | |
600 | ||
601 | std_session_send_df_end(sdi); | |
602 | ||
603 | return SR_OK; | |
604 | } | |
605 | ||
606 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
607 | { | |
608 | struct sr_usb_dev_inst *usb; | |
609 | ||
610 | std_session_send_df_end(sdi); | |
611 | ||
612 | usb = sdi->conn; | |
613 | analyzer_reset(usb->devhdl); | |
614 | /* TODO: Need to cancel and free any queued up transfers. */ | |
615 | ||
616 | return SR_OK; | |
617 | } | |
618 | ||
619 | static struct sr_dev_driver zeroplus_logic_cube_driver_info = { | |
620 | .name = "zeroplus-logic-cube", | |
621 | .longname = "ZEROPLUS Logic Cube LAP-C series", | |
622 | .api_version = 1, | |
623 | .init = std_init, | |
624 | .cleanup = std_cleanup, | |
625 | .scan = scan, | |
626 | .dev_list = std_dev_list, | |
627 | .dev_clear = std_dev_clear, | |
628 | .config_get = config_get, | |
629 | .config_set = config_set, | |
630 | .config_list = config_list, | |
631 | .dev_open = dev_open, | |
632 | .dev_close = dev_close, | |
633 | .dev_acquisition_start = dev_acquisition_start, | |
634 | .dev_acquisition_stop = dev_acquisition_stop, | |
635 | .context = NULL, | |
636 | }; | |
637 | SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info); |