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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 VENDOR_NAME "ZEROPLUS" | |
24 | #define USB_INTERFACE 0 | |
25 | #define USB_CONFIGURATION 1 | |
26 | #define NUM_TRIGGER_STAGES 4 | |
27 | #define PACKET_SIZE 2048 /* ?? */ | |
28 | ||
29 | //#define ZP_EXPERIMENTAL | |
30 | ||
31 | struct zp_model { | |
32 | uint16_t vid; | |
33 | uint16_t pid; | |
34 | const char *model_name; | |
35 | unsigned int channels; | |
36 | unsigned int sample_depth; /* In Ksamples/channel */ | |
37 | unsigned int max_sampling_freq; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the | |
42 | * same 128K sample depth. | |
43 | */ | |
44 | static const struct zp_model zeroplus_models[] = { | |
45 | {0x0c12, 0x7002, "LAP-16128U", 16, 128, 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, 0x7100, "AKIP-9101", 16, 256, 200}, | |
54 | ALL_ZERO | |
55 | }; | |
56 | ||
57 | static const uint32_t devopts[] = { | |
58 | SR_CONF_LOGIC_ANALYZER, | |
59 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST, | |
60 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
61 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
62 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
63 | SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
64 | }; | |
65 | ||
66 | static const int32_t trigger_matches[] = { | |
67 | SR_TRIGGER_ZERO, | |
68 | SR_TRIGGER_ONE, | |
69 | }; | |
70 | ||
71 | /* | |
72 | * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7. | |
73 | * We currently ignore other untested/unsupported devices here. | |
74 | */ | |
75 | static const char *channel_names[] = { | |
76 | "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", | |
77 | "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", | |
78 | "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", | |
79 | "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", | |
80 | }; | |
81 | ||
82 | /* | |
83 | * The hardware supports more samplerates than these, but these are the | |
84 | * options hardcoded into the vendor's Windows GUI. | |
85 | */ | |
86 | ||
87 | static const uint64_t samplerates_100[] = { | |
88 | SR_HZ(100), | |
89 | SR_HZ(500), | |
90 | SR_KHZ(1), | |
91 | SR_KHZ(5), | |
92 | SR_KHZ(25), | |
93 | SR_KHZ(50), | |
94 | SR_KHZ(100), | |
95 | SR_KHZ(200), | |
96 | SR_KHZ(400), | |
97 | SR_KHZ(800), | |
98 | SR_MHZ(1), | |
99 | SR_MHZ(10), | |
100 | SR_MHZ(25), | |
101 | SR_MHZ(50), | |
102 | SR_MHZ(80), | |
103 | SR_MHZ(100), | |
104 | }; | |
105 | ||
106 | const uint64_t samplerates_200[] = { | |
107 | SR_HZ(100), | |
108 | SR_HZ(500), | |
109 | SR_KHZ(1), | |
110 | SR_KHZ(5), | |
111 | SR_KHZ(25), | |
112 | SR_KHZ(50), | |
113 | SR_KHZ(100), | |
114 | SR_KHZ(200), | |
115 | SR_KHZ(400), | |
116 | SR_KHZ(800), | |
117 | SR_MHZ(1), | |
118 | SR_MHZ(10), | |
119 | SR_MHZ(25), | |
120 | SR_MHZ(50), | |
121 | SR_MHZ(80), | |
122 | SR_MHZ(100), | |
123 | SR_MHZ(150), | |
124 | SR_MHZ(200), | |
125 | }; | |
126 | ||
127 | static int dev_close(struct sr_dev_inst *sdi); | |
128 | ||
129 | SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate) | |
130 | { | |
131 | int i; | |
132 | ||
133 | for (i = 0; ARRAY_SIZE(samplerates_200); i++) | |
134 | if (samplerate == samplerates_200[i]) | |
135 | break; | |
136 | ||
137 | if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) { | |
138 | sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate); | |
139 | return SR_ERR_ARG; | |
140 | } | |
141 | ||
142 | sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate); | |
143 | ||
144 | if (samplerate >= SR_MHZ(1)) | |
145 | analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ); | |
146 | else if (samplerate >= SR_KHZ(1)) | |
147 | analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ); | |
148 | else | |
149 | analyzer_set_freq(samplerate, FREQ_SCALE_HZ); | |
150 | ||
151 | devc->cur_samplerate = samplerate; | |
152 | ||
153 | return SR_OK; | |
154 | } | |
155 | ||
156 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
157 | { | |
158 | struct sr_dev_inst *sdi; | |
159 | struct drv_context *drvc; | |
160 | struct dev_context *devc; | |
161 | const struct zp_model *prof; | |
162 | struct libusb_device_descriptor des; | |
163 | struct libusb_device_handle *hdl; | |
164 | libusb_device **devlist; | |
165 | GSList *devices; | |
166 | int ret, i, j; | |
167 | char serial_num[64], connection_id[64]; | |
168 | ||
169 | (void)options; | |
170 | ||
171 | drvc = di->context; | |
172 | ||
173 | devices = NULL; | |
174 | ||
175 | /* Find all ZEROPLUS analyzers and add them to device list. */ | |
176 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */ | |
177 | ||
178 | for (i = 0; devlist[i]; i++) { | |
179 | libusb_get_device_descriptor(devlist[i], &des); | |
180 | ||
181 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
182 | continue; | |
183 | ||
184 | if (des.iSerialNumber == 0) { | |
185 | serial_num[0] = '\0'; | |
186 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
187 | des.iSerialNumber, (unsigned char *) serial_num, | |
188 | sizeof(serial_num))) < 0) { | |
189 | sr_warn("Failed to get serial number string descriptor: %s.", | |
190 | libusb_error_name(ret)); | |
191 | continue; | |
192 | } | |
193 | ||
194 | libusb_close(hdl); | |
195 | ||
196 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
197 | ||
198 | prof = NULL; | |
199 | for (j = 0; j < zeroplus_models[j].vid; j++) { | |
200 | if (des.idVendor == zeroplus_models[j].vid && | |
201 | des.idProduct == zeroplus_models[j].pid) { | |
202 | prof = &zeroplus_models[j]; | |
203 | } | |
204 | } | |
205 | /* Skip if the device was not found. */ | |
206 | if (!prof) | |
207 | continue; | |
208 | sr_info("Found ZEROPLUS %s.", prof->model_name); | |
209 | ||
210 | /* Register the device with libsigrok. */ | |
211 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
212 | sdi->status = SR_ST_INACTIVE; | |
213 | sdi->vendor = g_strdup(VENDOR_NAME); | |
214 | sdi->model = g_strdup(prof->model_name); | |
215 | sdi->driver = di; | |
216 | sdi->serial_num = g_strdup(serial_num); | |
217 | sdi->connection_id = g_strdup(connection_id); | |
218 | ||
219 | /* Allocate memory for our private driver context. */ | |
220 | devc = g_malloc0(sizeof(struct dev_context)); | |
221 | sdi->priv = devc; | |
222 | devc->prof = prof; | |
223 | devc->num_channels = prof->channels; | |
224 | #ifdef ZP_EXPERIMENTAL | |
225 | devc->max_sample_depth = 128 * 1024; | |
226 | devc->max_samplerate = 200; | |
227 | #else | |
228 | devc->max_sample_depth = prof->sample_depth * 1024; | |
229 | devc->max_samplerate = prof->max_sampling_freq; | |
230 | #endif | |
231 | devc->max_samplerate *= SR_MHZ(1); | |
232 | devc->memory_size = MEMORY_SIZE_8K; | |
233 | // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES); | |
234 | ||
235 | /* Fill in channellist according to this device's profile. */ | |
236 | for (j = 0; j < devc->num_channels; j++) | |
237 | sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, | |
238 | channel_names[j]); | |
239 | ||
240 | devices = g_slist_append(devices, sdi); | |
241 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
242 | sdi->inst_type = SR_INST_USB; | |
243 | sdi->conn = sr_usb_dev_inst_new( | |
244 | libusb_get_bus_number(devlist[i]), | |
245 | libusb_get_device_address(devlist[i]), NULL); | |
246 | } | |
247 | libusb_free_device_list(devlist, 1); | |
248 | ||
249 | return devices; | |
250 | } | |
251 | ||
252 | static int dev_open(struct sr_dev_inst *sdi) | |
253 | { | |
254 | struct sr_dev_driver *di = sdi->driver; | |
255 | struct dev_context *devc; | |
256 | struct drv_context *drvc; | |
257 | struct sr_usb_dev_inst *usb; | |
258 | int ret; | |
259 | ||
260 | drvc = di->context; | |
261 | usb = sdi->conn; | |
262 | devc = sdi->priv; | |
263 | ||
264 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
265 | if (ret != SR_OK) | |
266 | return ret; | |
267 | ||
268 | sdi->status = SR_ST_ACTIVE; | |
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; | |
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 | sdi->status = SR_ST_INACTIVE; | |
334 | ||
335 | return SR_OK; | |
336 | } | |
337 | ||
338 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
339 | const struct sr_channel_group *cg) | |
340 | { | |
341 | struct dev_context *devc; | |
342 | GVariant *range[2]; | |
343 | ||
344 | (void)cg; | |
345 | ||
346 | if (!sdi) | |
347 | return SR_ERR_ARG; | |
348 | ||
349 | devc = sdi->priv; | |
350 | ||
351 | switch (key) { | |
352 | case SR_CONF_SAMPLERATE: | |
353 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
354 | break; | |
355 | case SR_CONF_CAPTURE_RATIO: | |
356 | *data = g_variant_new_uint64(devc->capture_ratio); | |
357 | break; | |
358 | case SR_CONF_VOLTAGE_THRESHOLD: | |
359 | range[0] = g_variant_new_double(devc->cur_threshold); | |
360 | range[1] = g_variant_new_double(devc->cur_threshold); | |
361 | *data = g_variant_new_tuple(range, 2); | |
362 | break; | |
363 | default: | |
364 | return SR_ERR_NA; | |
365 | } | |
366 | ||
367 | return SR_OK; | |
368 | } | |
369 | ||
370 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
371 | const struct sr_channel_group *cg) | |
372 | { | |
373 | struct dev_context *devc; | |
374 | gdouble low, high; | |
375 | ||
376 | (void)cg; | |
377 | ||
378 | if (sdi->status != SR_ST_ACTIVE) | |
379 | return SR_ERR_DEV_CLOSED; | |
380 | ||
381 | devc = sdi->priv; | |
382 | ||
383 | switch (key) { | |
384 | case SR_CONF_SAMPLERATE: | |
385 | return zp_set_samplerate(devc, g_variant_get_uint64(data)); | |
386 | case SR_CONF_LIMIT_SAMPLES: | |
387 | return set_limit_samples(devc, g_variant_get_uint64(data)); | |
388 | case SR_CONF_CAPTURE_RATIO: | |
389 | return set_capture_ratio(devc, g_variant_get_uint64(data)); | |
390 | case SR_CONF_VOLTAGE_THRESHOLD: | |
391 | g_variant_get(data, "(dd)", &low, &high); | |
392 | return set_voltage_threshold(devc, (low + high) / 2.0); | |
393 | default: | |
394 | return SR_ERR_NA; | |
395 | } | |
396 | ||
397 | return SR_OK; | |
398 | } | |
399 | ||
400 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
401 | const struct sr_channel_group *cg) | |
402 | { | |
403 | struct dev_context *devc; | |
404 | GVariant *gvar, *grange[2]; | |
405 | GVariantBuilder gvb; | |
406 | double v; | |
407 | GVariant *range[2]; | |
408 | ||
409 | (void)cg; | |
410 | ||
411 | switch (key) { | |
412 | case SR_CONF_DEVICE_OPTIONS: | |
413 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
414 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
415 | break; | |
416 | case SR_CONF_SAMPLERATE: | |
417 | devc = sdi->priv; | |
418 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
419 | if (devc->prof->max_sampling_freq == 100) { | |
420 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
421 | samplerates_100, ARRAY_SIZE(samplerates_100), | |
422 | sizeof(uint64_t)); | |
423 | } else if (devc->prof->max_sampling_freq == 200) { | |
424 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
425 | samplerates_200, ARRAY_SIZE(samplerates_200), | |
426 | sizeof(uint64_t)); | |
427 | } else { | |
428 | sr_err("Internal error: Unknown max. samplerate: %d.", | |
429 | devc->prof->max_sampling_freq); | |
430 | return SR_ERR_ARG; | |
431 | } | |
432 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
433 | *data = g_variant_builder_end(&gvb); | |
434 | break; | |
435 | case SR_CONF_TRIGGER_MATCH: | |
436 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
437 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
438 | sizeof(int32_t)); | |
439 | break; | |
440 | case SR_CONF_VOLTAGE_THRESHOLD: | |
441 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
442 | for (v = -6.0; v <= 6.0; v += 0.1) { | |
443 | range[0] = g_variant_new_double(v); | |
444 | range[1] = g_variant_new_double(v); | |
445 | gvar = g_variant_new_tuple(range, 2); | |
446 | g_variant_builder_add_value(&gvb, gvar); | |
447 | } | |
448 | *data = g_variant_builder_end(&gvb); | |
449 | break; | |
450 | case SR_CONF_LIMIT_SAMPLES: | |
451 | if (!sdi) | |
452 | return SR_ERR_ARG; | |
453 | devc = sdi->priv; | |
454 | grange[0] = g_variant_new_uint64(0); | |
455 | grange[1] = g_variant_new_uint64(devc->max_sample_depth); | |
456 | *data = g_variant_new_tuple(grange, 2); | |
457 | break; | |
458 | default: | |
459 | return SR_ERR_NA; | |
460 | } | |
461 | ||
462 | return SR_OK; | |
463 | } | |
464 | ||
465 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
466 | { | |
467 | struct dev_context *devc; | |
468 | struct sr_usb_dev_inst *usb; | |
469 | struct sr_datafeed_packet packet; | |
470 | struct sr_datafeed_logic logic; | |
471 | unsigned int samples_read; | |
472 | int res; | |
473 | unsigned int packet_num, n; | |
474 | unsigned char *buf; | |
475 | unsigned int status; | |
476 | unsigned int stop_address; | |
477 | unsigned int now_address; | |
478 | unsigned int trigger_address; | |
479 | unsigned int trigger_offset; | |
480 | unsigned int triggerbar; | |
481 | unsigned int ramsize_trigger; | |
482 | unsigned int memory_size; | |
483 | unsigned int valid_samples; | |
484 | unsigned int discard; | |
485 | int trigger_now; | |
486 | ||
487 | if (sdi->status != SR_ST_ACTIVE) | |
488 | return SR_ERR_DEV_CLOSED; | |
489 | ||
490 | devc = sdi->priv; | |
491 | ||
492 | if (analyzer_add_triggers(sdi) != SR_OK) { | |
493 | sr_err("Failed to configure triggers."); | |
494 | return SR_ERR; | |
495 | } | |
496 | ||
497 | usb = sdi->conn; | |
498 | ||
499 | set_triggerbar(devc); | |
500 | ||
501 | /* Push configured settings to device. */ | |
502 | analyzer_configure(usb->devhdl); | |
503 | ||
504 | analyzer_start(usb->devhdl); | |
505 | sr_info("Waiting for data."); | |
506 | analyzer_wait_data(usb->devhdl); | |
507 | ||
508 | status = analyzer_read_status(usb->devhdl); | |
509 | stop_address = analyzer_get_stop_address(usb->devhdl); | |
510 | now_address = analyzer_get_now_address(usb->devhdl); | |
511 | trigger_address = analyzer_get_trigger_address(usb->devhdl); | |
512 | ||
513 | triggerbar = analyzer_get_triggerbar_address(); | |
514 | ramsize_trigger = analyzer_get_ramsize_trigger_address(); | |
515 | ||
516 | n = get_memory_size(devc->memory_size); | |
517 | memory_size = n / 4; | |
518 | ||
519 | sr_info("Status = 0x%x.", status); | |
520 | sr_info("Stop address = 0x%x.", stop_address); | |
521 | sr_info("Now address = 0x%x.", now_address); | |
522 | sr_info("Trigger address = 0x%x.", trigger_address); | |
523 | sr_info("Triggerbar address = 0x%x.", triggerbar); | |
524 | sr_info("Ramsize trigger = 0x%x.", ramsize_trigger); | |
525 | sr_info("Memory size = 0x%x.", memory_size); | |
526 | ||
527 | std_session_send_df_header(sdi, LOG_PREFIX); | |
528 | ||
529 | /* Check for empty capture */ | |
530 | if ((status & STATUS_READY) && !stop_address) { | |
531 | std_session_send_df_end(sdi, LOG_PREFIX); | |
532 | return SR_OK; | |
533 | } | |
534 | ||
535 | buf = g_malloc(PACKET_SIZE); | |
536 | ||
537 | /* Check if the trigger is in the samples we are throwing away */ | |
538 | trigger_now = now_address == trigger_address || | |
539 | ((now_address + 1) % memory_size) == trigger_address; | |
540 | ||
541 | /* | |
542 | * STATUS_READY doesn't clear until now_address advances past | |
543 | * addr 0, but for our logic, clear it in that case | |
544 | */ | |
545 | if (!now_address) | |
546 | status &= ~STATUS_READY; | |
547 | ||
548 | analyzer_read_start(usb->devhdl); | |
549 | ||
550 | /* Calculate how much data to discard */ | |
551 | discard = 0; | |
552 | if (status & STATUS_READY) { | |
553 | /* | |
554 | * We haven't wrapped around, we need to throw away data from | |
555 | * our current position to the end of the buffer. | |
556 | * Additionally, the first two samples captured are always | |
557 | * bogus. | |
558 | */ | |
559 | discard += memory_size - now_address + 2; | |
560 | now_address = 2; | |
561 | } | |
562 | ||
563 | /* If we have more samples than we need, discard them */ | |
564 | valid_samples = (stop_address - now_address) % memory_size; | |
565 | if (valid_samples > ramsize_trigger + triggerbar) { | |
566 | discard += valid_samples - (ramsize_trigger + triggerbar); | |
567 | now_address += valid_samples - (ramsize_trigger + triggerbar); | |
568 | } | |
569 | ||
570 | sr_info("Need to discard %d samples.", discard); | |
571 | ||
572 | /* Calculate how far in the trigger is */ | |
573 | if (trigger_now) | |
574 | trigger_offset = 0; | |
575 | else | |
576 | trigger_offset = (trigger_address - now_address) % memory_size; | |
577 | ||
578 | /* Recalculate the number of samples available */ | |
579 | valid_samples = (stop_address - now_address) % memory_size; | |
580 | ||
581 | /* Send the incoming transfer to the session bus. */ | |
582 | samples_read = 0; | |
583 | for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) { | |
584 | unsigned int len; | |
585 | unsigned int buf_offset; | |
586 | ||
587 | res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE); | |
588 | sr_info("Tried to read %d bytes, actually read %d bytes.", | |
589 | PACKET_SIZE, res); | |
590 | ||
591 | if (discard >= PACKET_SIZE / 4) { | |
592 | discard -= PACKET_SIZE / 4; | |
593 | continue; | |
594 | } | |
595 | ||
596 | len = PACKET_SIZE - discard * 4; | |
597 | buf_offset = discard * 4; | |
598 | discard = 0; | |
599 | ||
600 | /* Check if we've read all the samples */ | |
601 | if (samples_read + len / 4 >= valid_samples) | |
602 | len = (valid_samples - samples_read) * 4; | |
603 | if (!len) | |
604 | break; | |
605 | ||
606 | if (samples_read < trigger_offset && | |
607 | samples_read + len / 4 > trigger_offset) { | |
608 | /* Send out samples remaining before trigger */ | |
609 | packet.type = SR_DF_LOGIC; | |
610 | packet.payload = &logic; | |
611 | logic.length = (trigger_offset - samples_read) * 4; | |
612 | logic.unitsize = 4; | |
613 | logic.data = buf + buf_offset; | |
614 | sr_session_send(sdi, &packet); | |
615 | len -= logic.length; | |
616 | samples_read += logic.length / 4; | |
617 | buf_offset += logic.length; | |
618 | } | |
619 | ||
620 | if (samples_read == trigger_offset) { | |
621 | /* Send out trigger */ | |
622 | packet.type = SR_DF_TRIGGER; | |
623 | packet.payload = NULL; | |
624 | sr_session_send(sdi, &packet); | |
625 | } | |
626 | ||
627 | /* Send out data (or data after trigger) */ | |
628 | packet.type = SR_DF_LOGIC; | |
629 | packet.payload = &logic; | |
630 | logic.length = len; | |
631 | logic.unitsize = 4; | |
632 | logic.data = buf + buf_offset; | |
633 | sr_session_send(sdi, &packet); | |
634 | samples_read += len / 4; | |
635 | } | |
636 | analyzer_read_stop(usb->devhdl); | |
637 | g_free(buf); | |
638 | ||
639 | std_session_send_df_end(sdi, LOG_PREFIX); | |
640 | ||
641 | return SR_OK; | |
642 | } | |
643 | ||
644 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ | |
645 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
646 | { | |
647 | struct sr_usb_dev_inst *usb; | |
648 | ||
649 | std_session_send_df_end(sdi, LOG_PREFIX); | |
650 | ||
651 | usb = sdi->conn; | |
652 | analyzer_reset(usb->devhdl); | |
653 | /* TODO: Need to cancel and free any queued up transfers. */ | |
654 | ||
655 | return SR_OK; | |
656 | } | |
657 | ||
658 | static struct sr_dev_driver zeroplus_logic_cube_driver_info = { | |
659 | .name = "zeroplus-logic-cube", | |
660 | .longname = "ZEROPLUS Logic Cube LAP-C series", | |
661 | .api_version = 1, | |
662 | .init = std_init, | |
663 | .cleanup = std_cleanup, | |
664 | .scan = scan, | |
665 | .dev_list = std_dev_list, | |
666 | .dev_clear = NULL, | |
667 | .config_get = config_get, | |
668 | .config_set = config_set, | |
669 | .config_list = config_list, | |
670 | .dev_open = dev_open, | |
671 | .dev_close = dev_close, | |
672 | .dev_acquisition_start = dev_acquisition_start, | |
673 | .dev_acquisition_stop = dev_acquisition_stop, | |
674 | .context = NULL, | |
675 | }; | |
676 | SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info); |