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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 drvopts[] = { | |
58 | SR_CONF_LOGIC_ANALYZER, | |
59 | }; | |
60 | ||
61 | static const uint32_t devopts[] = { | |
62 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST, | |
63 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
64 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
65 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
66 | SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
67 | }; | |
68 | ||
69 | static const int32_t trigger_matches[] = { | |
70 | SR_TRIGGER_ZERO, | |
71 | SR_TRIGGER_ONE, | |
72 | }; | |
73 | ||
74 | /* | |
75 | * ZEROPLUS LAP-C (16032) numbers the 16 channels A0-A7 and B0-B7. | |
76 | * We currently ignore other untested/unsupported devices here. | |
77 | */ | |
78 | static const char *channel_names[] = { | |
79 | "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", | |
80 | "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", | |
81 | "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", | |
82 | "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", | |
83 | }; | |
84 | ||
85 | /* | |
86 | * The hardware supports more samplerates than these, but these are the | |
87 | * options hardcoded into the vendor's Windows GUI. | |
88 | */ | |
89 | ||
90 | static const uint64_t samplerates_100[] = { | |
91 | SR_HZ(100), | |
92 | SR_HZ(500), | |
93 | SR_KHZ(1), | |
94 | SR_KHZ(5), | |
95 | SR_KHZ(25), | |
96 | SR_KHZ(50), | |
97 | SR_KHZ(100), | |
98 | SR_KHZ(200), | |
99 | SR_KHZ(400), | |
100 | SR_KHZ(800), | |
101 | SR_MHZ(1), | |
102 | SR_MHZ(10), | |
103 | SR_MHZ(25), | |
104 | SR_MHZ(50), | |
105 | SR_MHZ(80), | |
106 | SR_MHZ(100), | |
107 | }; | |
108 | ||
109 | const uint64_t samplerates_200[] = { | |
110 | SR_HZ(100), | |
111 | SR_HZ(500), | |
112 | SR_KHZ(1), | |
113 | SR_KHZ(5), | |
114 | SR_KHZ(25), | |
115 | SR_KHZ(50), | |
116 | SR_KHZ(100), | |
117 | SR_KHZ(200), | |
118 | SR_KHZ(400), | |
119 | SR_KHZ(800), | |
120 | SR_MHZ(1), | |
121 | SR_MHZ(10), | |
122 | SR_MHZ(25), | |
123 | SR_MHZ(50), | |
124 | SR_MHZ(80), | |
125 | SR_MHZ(100), | |
126 | SR_MHZ(150), | |
127 | SR_MHZ(200), | |
128 | }; | |
129 | ||
130 | SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate) | |
131 | { | |
132 | int i; | |
133 | ||
134 | for (i = 0; ARRAY_SIZE(samplerates_200); i++) | |
135 | if (samplerate == samplerates_200[i]) | |
136 | break; | |
137 | ||
138 | if (i == ARRAY_SIZE(samplerates_200) || samplerate > devc->max_samplerate) { | |
139 | sr_err("Unsupported samplerate: %" PRIu64 "Hz.", samplerate); | |
140 | return SR_ERR_ARG; | |
141 | } | |
142 | ||
143 | sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate); | |
144 | ||
145 | if (samplerate >= SR_MHZ(1)) | |
146 | analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ); | |
147 | else if (samplerate >= SR_KHZ(1)) | |
148 | analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ); | |
149 | else | |
150 | analyzer_set_freq(samplerate, FREQ_SCALE_HZ); | |
151 | ||
152 | devc->cur_samplerate = samplerate; | |
153 | ||
154 | return SR_OK; | |
155 | } | |
156 | ||
157 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
158 | { | |
159 | struct sr_dev_inst *sdi; | |
160 | struct drv_context *drvc; | |
161 | struct dev_context *devc; | |
162 | const struct zp_model *prof; | |
163 | struct libusb_device_descriptor des; | |
164 | struct libusb_device_handle *hdl; | |
165 | libusb_device **devlist; | |
166 | GSList *devices; | |
167 | int ret, i, j; | |
168 | char serial_num[64], connection_id[64]; | |
169 | ||
170 | (void)options; | |
171 | ||
172 | drvc = di->context; | |
173 | ||
174 | devices = NULL; | |
175 | ||
176 | /* Find all ZEROPLUS analyzers and add them to device list. */ | |
177 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); /* TODO: Errors. */ | |
178 | ||
179 | for (i = 0; devlist[i]; i++) { | |
180 | libusb_get_device_descriptor(devlist[i], &des); | |
181 | ||
182 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
183 | continue; | |
184 | ||
185 | if (des.iSerialNumber == 0) { | |
186 | serial_num[0] = '\0'; | |
187 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
188 | des.iSerialNumber, (unsigned char *) serial_num, | |
189 | sizeof(serial_num))) < 0) { | |
190 | sr_warn("Failed to get serial number string descriptor: %s.", | |
191 | libusb_error_name(ret)); | |
192 | continue; | |
193 | } | |
194 | ||
195 | libusb_close(hdl); | |
196 | ||
197 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
198 | ||
199 | prof = NULL; | |
200 | for (j = 0; j < zeroplus_models[j].vid; j++) { | |
201 | if (des.idVendor == zeroplus_models[j].vid && | |
202 | des.idProduct == zeroplus_models[j].pid) { | |
203 | prof = &zeroplus_models[j]; | |
204 | } | |
205 | } | |
206 | /* Skip if the device was not found. */ | |
207 | if (!prof) | |
208 | continue; | |
209 | sr_info("Found ZEROPLUS %s.", prof->model_name); | |
210 | ||
211 | /* Register the device with libsigrok. */ | |
212 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
213 | sdi->status = SR_ST_INACTIVE; | |
214 | sdi->vendor = g_strdup(VENDOR_NAME); | |
215 | sdi->model = g_strdup(prof->model_name); | |
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 | sdi->inst_type = SR_INST_USB; | |
242 | sdi->conn = sr_usb_dev_inst_new( | |
243 | libusb_get_bus_number(devlist[i]), | |
244 | libusb_get_device_address(devlist[i]), NULL); | |
245 | } | |
246 | libusb_free_device_list(devlist, 1); | |
247 | ||
248 | return std_scan_complete(di, devices); | |
249 | } | |
250 | ||
251 | static int dev_open(struct sr_dev_inst *sdi) | |
252 | { | |
253 | struct sr_dev_driver *di = sdi->driver; | |
254 | struct dev_context *devc; | |
255 | struct drv_context *drvc; | |
256 | struct sr_usb_dev_inst *usb; | |
257 | int ret; | |
258 | ||
259 | drvc = di->context; | |
260 | usb = sdi->conn; | |
261 | devc = sdi->priv; | |
262 | ||
263 | ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb); | |
264 | if (ret != SR_OK) | |
265 | return ret; | |
266 | ||
267 | ret = libusb_set_configuration(usb->devhdl, USB_CONFIGURATION); | |
268 | if (ret < 0) { | |
269 | sr_err("Unable to set USB configuration %d: %s.", | |
270 | USB_CONFIGURATION, libusb_error_name(ret)); | |
271 | return SR_ERR; | |
272 | } | |
273 | ||
274 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
275 | if (ret != 0) { | |
276 | sr_err("Unable to claim interface: %s.", | |
277 | libusb_error_name(ret)); | |
278 | return SR_ERR; | |
279 | } | |
280 | ||
281 | /* Set default configuration after power on. */ | |
282 | if (analyzer_read_status(usb->devhdl) == 0) | |
283 | analyzer_configure(usb->devhdl); | |
284 | ||
285 | analyzer_reset(usb->devhdl); | |
286 | analyzer_initialize(usb->devhdl); | |
287 | ||
288 | //analyzer_set_memory_size(MEMORY_SIZE_512K); | |
289 | // analyzer_set_freq(g_freq, g_freq_scale); | |
290 | analyzer_set_trigger_count(1); | |
291 | // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger) | |
292 | // * get_memory_size(g_memory_size)) / 100) >> 2); | |
293 | ||
294 | #if 0 | |
295 | if (g_double_mode == 1) | |
296 | analyzer_set_compression(COMPRESSION_DOUBLE); | |
297 | else if (g_compression == 1) | |
298 | analyzer_set_compression(COMPRESSION_ENABLE); | |
299 | else | |
300 | #endif | |
301 | analyzer_set_compression(COMPRESSION_NONE); | |
302 | ||
303 | if (devc->cur_samplerate == 0) { | |
304 | /* Samplerate hasn't been set. Default to 1MHz. */ | |
305 | analyzer_set_freq(1, FREQ_SCALE_MHZ); | |
306 | devc->cur_samplerate = SR_MHZ(1); | |
307 | } | |
308 | ||
309 | if (devc->cur_threshold == 0) | |
310 | set_voltage_threshold(devc, 1.5); | |
311 | ||
312 | return SR_OK; | |
313 | } | |
314 | ||
315 | static int dev_close(struct sr_dev_inst *sdi) | |
316 | { | |
317 | struct sr_usb_dev_inst *usb; | |
318 | ||
319 | usb = sdi->conn; | |
320 | ||
321 | if (!usb->devhdl) | |
322 | return SR_ERR_BUG; | |
323 | ||
324 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
325 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
326 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
327 | libusb_reset_device(usb->devhdl); | |
328 | libusb_close(usb->devhdl); | |
329 | usb->devhdl = NULL; | |
330 | ||
331 | return SR_OK; | |
332 | } | |
333 | ||
334 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
335 | const struct sr_channel_group *cg) | |
336 | { | |
337 | struct dev_context *devc; | |
338 | GVariant *range[2]; | |
339 | ||
340 | (void)cg; | |
341 | ||
342 | if (!sdi) | |
343 | return SR_ERR_ARG; | |
344 | ||
345 | devc = sdi->priv; | |
346 | ||
347 | switch (key) { | |
348 | case SR_CONF_SAMPLERATE: | |
349 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
350 | break; | |
351 | case SR_CONF_CAPTURE_RATIO: | |
352 | *data = g_variant_new_uint64(devc->capture_ratio); | |
353 | break; | |
354 | case SR_CONF_VOLTAGE_THRESHOLD: | |
355 | range[0] = g_variant_new_double(devc->cur_threshold); | |
356 | range[1] = g_variant_new_double(devc->cur_threshold); | |
357 | *data = g_variant_new_tuple(range, 2); | |
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, const struct sr_dev_inst *sdi, | |
367 | 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 | return set_capture_ratio(devc, g_variant_get_uint64(data)); | |
383 | case SR_CONF_VOLTAGE_THRESHOLD: | |
384 | g_variant_get(data, "(dd)", &low, &high); | |
385 | return set_voltage_threshold(devc, (low + high) / 2.0); | |
386 | default: | |
387 | return SR_ERR_NA; | |
388 | } | |
389 | ||
390 | return SR_OK; | |
391 | } | |
392 | ||
393 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
394 | const struct sr_channel_group *cg) | |
395 | { | |
396 | struct dev_context *devc; | |
397 | GVariant *gvar, *grange[2]; | |
398 | GVariantBuilder gvb; | |
399 | double v; | |
400 | GVariant *range[2]; | |
401 | ||
402 | (void)cg; | |
403 | ||
404 | switch (key) { | |
405 | case SR_CONF_DEVICE_OPTIONS: | |
406 | if (!sdi) { | |
407 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
408 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
409 | } else { | |
410 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
411 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
412 | } | |
413 | break; | |
414 | case SR_CONF_SAMPLERATE: | |
415 | devc = sdi->priv; | |
416 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
417 | if (devc->prof->max_sampling_freq == 100) { | |
418 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
419 | samplerates_100, ARRAY_SIZE(samplerates_100), | |
420 | sizeof(uint64_t)); | |
421 | } else if (devc->prof->max_sampling_freq == 200) { | |
422 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
423 | samplerates_200, ARRAY_SIZE(samplerates_200), | |
424 | sizeof(uint64_t)); | |
425 | } else { | |
426 | sr_err("Internal error: Unknown max. samplerate: %d.", | |
427 | devc->prof->max_sampling_freq); | |
428 | return SR_ERR_ARG; | |
429 | } | |
430 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
431 | *data = g_variant_builder_end(&gvb); | |
432 | break; | |
433 | case SR_CONF_TRIGGER_MATCH: | |
434 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
435 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
436 | sizeof(int32_t)); | |
437 | break; | |
438 | case SR_CONF_VOLTAGE_THRESHOLD: | |
439 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
440 | for (v = -6.0; v <= 6.0; v += 0.1) { | |
441 | range[0] = g_variant_new_double(v); | |
442 | range[1] = g_variant_new_double(v); | |
443 | gvar = g_variant_new_tuple(range, 2); | |
444 | g_variant_builder_add_value(&gvb, gvar); | |
445 | } | |
446 | *data = g_variant_builder_end(&gvb); | |
447 | break; | |
448 | case SR_CONF_LIMIT_SAMPLES: | |
449 | if (!sdi) | |
450 | return SR_ERR_ARG; | |
451 | devc = sdi->priv; | |
452 | grange[0] = g_variant_new_uint64(0); | |
453 | grange[1] = g_variant_new_uint64(devc->max_sample_depth); | |
454 | *data = g_variant_new_tuple(grange, 2); | |
455 | break; | |
456 | default: | |
457 | return SR_ERR_NA; | |
458 | } | |
459 | ||
460 | return SR_OK; | |
461 | } | |
462 | ||
463 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
464 | { | |
465 | struct dev_context *devc; | |
466 | struct sr_usb_dev_inst *usb; | |
467 | struct sr_datafeed_packet packet; | |
468 | struct sr_datafeed_logic logic; | |
469 | unsigned int samples_read; | |
470 | int res; | |
471 | unsigned int packet_num, n; | |
472 | unsigned char *buf; | |
473 | unsigned int status; | |
474 | unsigned int stop_address; | |
475 | unsigned int now_address; | |
476 | unsigned int trigger_address; | |
477 | unsigned int trigger_offset; | |
478 | unsigned int triggerbar; | |
479 | unsigned int ramsize_trigger; | |
480 | unsigned int memory_size; | |
481 | unsigned int valid_samples; | |
482 | unsigned int discard; | |
483 | int trigger_now; | |
484 | ||
485 | devc = sdi->priv; | |
486 | ||
487 | if (analyzer_add_triggers(sdi) != SR_OK) { | |
488 | sr_err("Failed to configure triggers."); | |
489 | return SR_ERR; | |
490 | } | |
491 | ||
492 | usb = sdi->conn; | |
493 | ||
494 | set_triggerbar(devc); | |
495 | ||
496 | /* Push configured settings to device. */ | |
497 | analyzer_configure(usb->devhdl); | |
498 | ||
499 | analyzer_start(usb->devhdl); | |
500 | sr_info("Waiting for data."); | |
501 | analyzer_wait_data(usb->devhdl); | |
502 | ||
503 | status = analyzer_read_status(usb->devhdl); | |
504 | stop_address = analyzer_get_stop_address(usb->devhdl); | |
505 | now_address = analyzer_get_now_address(usb->devhdl); | |
506 | trigger_address = analyzer_get_trigger_address(usb->devhdl); | |
507 | ||
508 | triggerbar = analyzer_get_triggerbar_address(); | |
509 | ramsize_trigger = analyzer_get_ramsize_trigger_address(); | |
510 | ||
511 | n = get_memory_size(devc->memory_size); | |
512 | memory_size = n / 4; | |
513 | ||
514 | sr_info("Status = 0x%x.", status); | |
515 | sr_info("Stop address = 0x%x.", stop_address); | |
516 | sr_info("Now address = 0x%x.", now_address); | |
517 | sr_info("Trigger address = 0x%x.", trigger_address); | |
518 | sr_info("Triggerbar address = 0x%x.", triggerbar); | |
519 | sr_info("Ramsize trigger = 0x%x.", ramsize_trigger); | |
520 | sr_info("Memory size = 0x%x.", memory_size); | |
521 | ||
522 | std_session_send_df_header(sdi); | |
523 | ||
524 | /* Check for empty capture */ | |
525 | if ((status & STATUS_READY) && !stop_address) { | |
526 | std_session_send_df_end(sdi); | |
527 | return SR_OK; | |
528 | } | |
529 | ||
530 | buf = g_malloc(PACKET_SIZE); | |
531 | ||
532 | /* Check if the trigger is in the samples we are throwing away */ | |
533 | trigger_now = now_address == trigger_address || | |
534 | ((now_address + 1) % memory_size) == trigger_address; | |
535 | ||
536 | /* | |
537 | * STATUS_READY doesn't clear until now_address advances past | |
538 | * addr 0, but for our logic, clear it in that case | |
539 | */ | |
540 | if (!now_address) | |
541 | status &= ~STATUS_READY; | |
542 | ||
543 | analyzer_read_start(usb->devhdl); | |
544 | ||
545 | /* Calculate how much data to discard */ | |
546 | discard = 0; | |
547 | if (status & STATUS_READY) { | |
548 | /* | |
549 | * We haven't wrapped around, we need to throw away data from | |
550 | * our current position to the end of the buffer. | |
551 | * Additionally, the first two samples captured are always | |
552 | * bogus. | |
553 | */ | |
554 | discard += memory_size - now_address + 2; | |
555 | now_address = 2; | |
556 | } | |
557 | ||
558 | /* If we have more samples than we need, discard them */ | |
559 | valid_samples = (stop_address - now_address) % memory_size; | |
560 | if (valid_samples > ramsize_trigger + triggerbar) { | |
561 | discard += valid_samples - (ramsize_trigger + triggerbar); | |
562 | now_address += valid_samples - (ramsize_trigger + triggerbar); | |
563 | } | |
564 | ||
565 | sr_info("Need to discard %d samples.", discard); | |
566 | ||
567 | /* Calculate how far in the trigger is */ | |
568 | if (trigger_now) | |
569 | trigger_offset = 0; | |
570 | else | |
571 | trigger_offset = (trigger_address - now_address) % memory_size; | |
572 | ||
573 | /* Recalculate the number of samples available */ | |
574 | valid_samples = (stop_address - now_address) % memory_size; | |
575 | ||
576 | /* Send the incoming transfer to the session bus. */ | |
577 | samples_read = 0; | |
578 | for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) { | |
579 | unsigned int len; | |
580 | unsigned int buf_offset; | |
581 | ||
582 | res = analyzer_read_data(usb->devhdl, buf, PACKET_SIZE); | |
583 | sr_info("Tried to read %d bytes, actually read %d bytes.", | |
584 | PACKET_SIZE, res); | |
585 | ||
586 | if (discard >= PACKET_SIZE / 4) { | |
587 | discard -= PACKET_SIZE / 4; | |
588 | continue; | |
589 | } | |
590 | ||
591 | len = PACKET_SIZE - discard * 4; | |
592 | buf_offset = discard * 4; | |
593 | discard = 0; | |
594 | ||
595 | /* Check if we've read all the samples */ | |
596 | if (samples_read + len / 4 >= valid_samples) | |
597 | len = (valid_samples - samples_read) * 4; | |
598 | if (!len) | |
599 | break; | |
600 | ||
601 | if (samples_read < trigger_offset && | |
602 | samples_read + len / 4 > trigger_offset) { | |
603 | /* Send out samples remaining before trigger */ | |
604 | packet.type = SR_DF_LOGIC; | |
605 | packet.payload = &logic; | |
606 | logic.length = (trigger_offset - samples_read) * 4; | |
607 | logic.unitsize = 4; | |
608 | logic.data = buf + buf_offset; | |
609 | sr_session_send(sdi, &packet); | |
610 | len -= logic.length; | |
611 | samples_read += logic.length / 4; | |
612 | buf_offset += logic.length; | |
613 | } | |
614 | ||
615 | if (samples_read == trigger_offset) { | |
616 | /* Send out trigger */ | |
617 | packet.type = SR_DF_TRIGGER; | |
618 | packet.payload = NULL; | |
619 | sr_session_send(sdi, &packet); | |
620 | } | |
621 | ||
622 | /* Send out data (or data after trigger) */ | |
623 | packet.type = SR_DF_LOGIC; | |
624 | packet.payload = &logic; | |
625 | logic.length = len; | |
626 | logic.unitsize = 4; | |
627 | logic.data = buf + buf_offset; | |
628 | sr_session_send(sdi, &packet); | |
629 | samples_read += len / 4; | |
630 | } | |
631 | analyzer_read_stop(usb->devhdl); | |
632 | g_free(buf); | |
633 | ||
634 | std_session_send_df_end(sdi); | |
635 | ||
636 | return SR_OK; | |
637 | } | |
638 | ||
639 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ | |
640 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
641 | { | |
642 | struct sr_usb_dev_inst *usb; | |
643 | ||
644 | std_session_send_df_end(sdi); | |
645 | ||
646 | usb = sdi->conn; | |
647 | analyzer_reset(usb->devhdl); | |
648 | /* TODO: Need to cancel and free any queued up transfers. */ | |
649 | ||
650 | return SR_OK; | |
651 | } | |
652 | ||
653 | static struct sr_dev_driver zeroplus_logic_cube_driver_info = { | |
654 | .name = "zeroplus-logic-cube", | |
655 | .longname = "ZEROPLUS Logic Cube LAP-C series", | |
656 | .api_version = 1, | |
657 | .init = std_init, | |
658 | .cleanup = std_cleanup, | |
659 | .scan = scan, | |
660 | .dev_list = std_dev_list, | |
661 | .dev_clear = NULL, | |
662 | .config_get = config_get, | |
663 | .config_set = config_set, | |
664 | .config_list = config_list, | |
665 | .dev_open = dev_open, | |
666 | .dev_close = dev_close, | |
667 | .dev_acquisition_start = dev_acquisition_start, | |
668 | .dev_acquisition_stop = dev_acquisition_stop, | |
669 | .context = NULL, | |
670 | }; | |
671 | SR_REGISTER_DEV_DRIVER(zeroplus_logic_cube_driver_info); |