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3ba56876 | 1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Håvard Espeland <gus@ping.uio.no>, | |
5 | * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no> | |
6 | * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, either version 3 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | /* | |
23 | * ASIX SIGMA/SIGMA2 logic analyzer driver | |
24 | */ | |
25 | ||
26 | #include <config.h> | |
27 | #include "protocol.h" | |
28 | ||
29 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info; | |
30 | ||
31 | /* | |
32 | * Channel numbers seem to go from 1-16, according to this image: | |
33 | * http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg | |
34 | * (the cable has two additional GND pins, and a TI and TO pin) | |
35 | */ | |
36 | static const char *channel_names[] = { | |
37 | "1", "2", "3", "4", "5", "6", "7", "8", | |
38 | "9", "10", "11", "12", "13", "14", "15", "16", | |
39 | }; | |
40 | ||
41 | static const uint32_t drvopts[] = { | |
42 | SR_CONF_LOGIC_ANALYZER, | |
43 | }; | |
44 | ||
45 | static const uint32_t devopts[] = { | |
46 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
47 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
48 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
49 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
50 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
51 | }; | |
52 | ||
53 | static const int32_t trigger_matches[] = { | |
54 | SR_TRIGGER_ZERO, | |
55 | SR_TRIGGER_ONE, | |
56 | SR_TRIGGER_RISING, | |
57 | SR_TRIGGER_FALLING, | |
58 | }; | |
59 | ||
60 | ||
61 | static int dev_clear(const struct sr_dev_driver *di) | |
62 | { | |
63 | return std_dev_clear(di, sigma_clear_helper); | |
64 | } | |
65 | ||
66 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) | |
67 | { | |
68 | return std_init(sr_ctx, di, LOG_PREFIX); | |
69 | } | |
70 | ||
71 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
72 | { | |
73 | struct sr_dev_inst *sdi; | |
74 | struct drv_context *drvc; | |
75 | struct dev_context *devc; | |
76 | GSList *devices; | |
77 | struct ftdi_device_list *devlist; | |
78 | char serial_txt[10]; | |
79 | uint32_t serial; | |
80 | int ret; | |
81 | unsigned int i; | |
82 | ||
83 | (void)options; | |
84 | ||
85 | drvc = di->context; | |
86 | ||
87 | devices = NULL; | |
88 | ||
89 | devc = g_malloc0(sizeof(struct dev_context)); | |
90 | ||
91 | ftdi_init(&devc->ftdic); | |
92 | ||
93 | /* Look for SIGMAs. */ | |
94 | ||
95 | if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist, | |
96 | USB_VENDOR, USB_PRODUCT)) <= 0) { | |
97 | if (ret < 0) | |
98 | sr_err("ftdi_usb_find_all(): %d", ret); | |
99 | goto free; | |
100 | } | |
101 | ||
102 | /* Make sure it's a version 1 or 2 SIGMA. */ | |
103 | ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0, | |
104 | serial_txt, sizeof(serial_txt)); | |
105 | sscanf(serial_txt, "%x", &serial); | |
106 | ||
107 | if (serial < 0xa6010000 || serial > 0xa602ffff) { | |
108 | sr_err("Only SIGMA and SIGMA2 are supported " | |
109 | "in this version of libsigrok."); | |
110 | goto free; | |
111 | } | |
112 | ||
113 | sr_info("Found ASIX SIGMA - Serial: %s", serial_txt); | |
114 | ||
115 | devc->cur_samplerate = samplerates[0]; | |
116 | devc->period_ps = 0; | |
117 | devc->limit_msec = 0; | |
118 | devc->cur_firmware = -1; | |
119 | devc->num_channels = 0; | |
120 | devc->samples_per_event = 0; | |
121 | devc->capture_ratio = 50; | |
122 | devc->use_triggers = 0; | |
123 | ||
124 | /* Register SIGMA device. */ | |
125 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
126 | sdi->status = SR_ST_INITIALIZING; | |
127 | sdi->vendor = g_strdup(USB_VENDOR_NAME); | |
128 | sdi->model = g_strdup(USB_MODEL_NAME); | |
129 | sdi->driver = di; | |
130 | ||
131 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) | |
132 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]); | |
133 | ||
134 | devices = g_slist_append(devices, sdi); | |
135 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
136 | sdi->priv = devc; | |
137 | ||
138 | /* We will open the device again when we need it. */ | |
139 | ftdi_list_free(&devlist); | |
140 | ||
141 | return devices; | |
142 | ||
143 | free: | |
144 | ftdi_deinit(&devc->ftdic); | |
145 | g_free(devc); | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | static GSList *dev_list(const struct sr_dev_driver *di) | |
150 | { | |
151 | return ((struct drv_context *)(di->context))->instances; | |
152 | } | |
153 | ||
154 | static int dev_open(struct sr_dev_inst *sdi) | |
155 | { | |
156 | struct dev_context *devc; | |
157 | int ret; | |
158 | ||
159 | devc = sdi->priv; | |
160 | ||
161 | /* Make sure it's an ASIX SIGMA. */ | |
162 | if ((ret = ftdi_usb_open_desc(&devc->ftdic, | |
163 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { | |
164 | ||
165 | sr_err("ftdi_usb_open failed: %s", | |
166 | ftdi_get_error_string(&devc->ftdic)); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | sdi->status = SR_ST_ACTIVE; | |
172 | ||
173 | return SR_OK; | |
174 | } | |
175 | ||
176 | static int dev_close(struct sr_dev_inst *sdi) | |
177 | { | |
178 | struct dev_context *devc; | |
179 | ||
180 | devc = sdi->priv; | |
181 | ||
182 | /* TODO */ | |
183 | if (sdi->status == SR_ST_ACTIVE) | |
184 | ftdi_usb_close(&devc->ftdic); | |
185 | ||
186 | sdi->status = SR_ST_INACTIVE; | |
187 | ||
188 | return SR_OK; | |
189 | } | |
190 | ||
191 | static int cleanup(const struct sr_dev_driver *di) | |
192 | { | |
193 | return dev_clear(di); | |
194 | } | |
195 | ||
196 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
197 | const struct sr_channel_group *cg) | |
198 | { | |
199 | struct dev_context *devc; | |
200 | ||
201 | (void)cg; | |
202 | ||
203 | if (!sdi) | |
204 | return SR_ERR; | |
205 | devc = sdi->priv; | |
206 | ||
207 | switch (key) { | |
208 | case SR_CONF_SAMPLERATE: | |
209 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
210 | break; | |
211 | case SR_CONF_LIMIT_MSEC: | |
212 | *data = g_variant_new_uint64(devc->limit_msec); | |
213 | break; | |
214 | case SR_CONF_CAPTURE_RATIO: | |
215 | *data = g_variant_new_uint64(devc->capture_ratio); | |
216 | break; | |
217 | default: | |
218 | return SR_ERR_NA; | |
219 | } | |
220 | ||
221 | return SR_OK; | |
222 | } | |
223 | ||
224 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
225 | const struct sr_channel_group *cg) | |
226 | { | |
227 | struct dev_context *devc; | |
228 | uint64_t tmp; | |
229 | int ret; | |
230 | ||
231 | (void)cg; | |
232 | ||
233 | if (sdi->status != SR_ST_ACTIVE) | |
234 | return SR_ERR_DEV_CLOSED; | |
235 | ||
236 | devc = sdi->priv; | |
237 | ||
238 | ret = SR_OK; | |
239 | switch (key) { | |
240 | case SR_CONF_SAMPLERATE: | |
241 | ret = sigma_set_samplerate(sdi, g_variant_get_uint64(data)); | |
242 | break; | |
243 | case SR_CONF_LIMIT_MSEC: | |
244 | tmp = g_variant_get_uint64(data); | |
245 | if (tmp > 0) | |
246 | devc->limit_msec = g_variant_get_uint64(data); | |
247 | else | |
248 | ret = SR_ERR; | |
249 | break; | |
250 | case SR_CONF_LIMIT_SAMPLES: | |
251 | tmp = g_variant_get_uint64(data); | |
252 | devc->limit_msec = tmp * 1000 / devc->cur_samplerate; | |
253 | break; | |
254 | case SR_CONF_CAPTURE_RATIO: | |
255 | tmp = g_variant_get_uint64(data); | |
256 | if (tmp <= 100) | |
257 | devc->capture_ratio = tmp; | |
258 | else | |
259 | ret = SR_ERR; | |
260 | break; | |
261 | default: | |
262 | ret = SR_ERR_NA; | |
263 | } | |
264 | ||
265 | return ret; | |
266 | } | |
267 | ||
268 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
269 | const struct sr_channel_group *cg) | |
270 | { | |
271 | GVariant *gvar; | |
272 | GVariantBuilder gvb; | |
273 | ||
274 | (void)cg; | |
275 | ||
276 | switch (key) { | |
277 | case SR_CONF_DEVICE_OPTIONS: | |
278 | if (!sdi) | |
279 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
280 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
281 | else | |
282 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
283 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
284 | break; | |
285 | case SR_CONF_SAMPLERATE: | |
286 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
287 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
288 | SAMPLERATES_COUNT, sizeof(uint64_t)); | |
289 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
290 | *data = g_variant_builder_end(&gvb); | |
291 | break; | |
292 | case SR_CONF_TRIGGER_MATCH: | |
293 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
294 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
295 | sizeof(int32_t)); | |
296 | break; | |
297 | default: | |
298 | return SR_ERR_NA; | |
299 | } | |
300 | ||
301 | return SR_OK; | |
302 | } | |
303 | ||
304 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
305 | { | |
306 | struct dev_context *devc; | |
307 | struct clockselect_50 clockselect; | |
308 | int frac, triggerpin, ret; | |
309 | uint8_t triggerselect = 0; | |
310 | struct triggerinout triggerinout_conf; | |
311 | struct triggerlut lut; | |
312 | ||
313 | if (sdi->status != SR_ST_ACTIVE) | |
314 | return SR_ERR_DEV_CLOSED; | |
315 | ||
316 | devc = sdi->priv; | |
317 | ||
318 | if (sigma_convert_trigger(sdi) != SR_OK) { | |
319 | sr_err("Failed to configure triggers."); | |
320 | return SR_ERR; | |
321 | } | |
322 | ||
323 | /* If the samplerate has not been set, default to 200 kHz. */ | |
324 | if (devc->cur_firmware == -1) { | |
325 | if ((ret = sigma_set_samplerate(sdi, SR_KHZ(200))) != SR_OK) | |
326 | return ret; | |
327 | } | |
328 | ||
329 | /* Enter trigger programming mode. */ | |
330 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc); | |
331 | ||
332 | /* 100 and 200 MHz mode. */ | |
333 | if (devc->cur_samplerate >= SR_MHZ(100)) { | |
334 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc); | |
335 | ||
336 | /* Find which pin to trigger on from mask. */ | |
0a1f7b09 | 337 | for (triggerpin = 0; triggerpin < 8; triggerpin++) |
3ba56876 | 338 | if ((devc->trigger.risingmask | devc->trigger.fallingmask) & |
339 | (1 << triggerpin)) | |
340 | break; | |
341 | ||
342 | /* Set trigger pin and light LED on trigger. */ | |
343 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
344 | ||
345 | /* Default rising edge. */ | |
346 | if (devc->trigger.fallingmask) | |
347 | triggerselect |= 1 << 3; | |
348 | ||
349 | /* All other modes. */ | |
350 | } else if (devc->cur_samplerate <= SR_MHZ(50)) { | |
351 | sigma_build_basic_trigger(&lut, devc); | |
352 | ||
353 | sigma_write_trigger_lut(&lut, devc); | |
354 | ||
355 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
356 | } | |
357 | ||
358 | /* Setup trigger in and out pins to default values. */ | |
359 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); | |
360 | triggerinout_conf.trgout_bytrigger = 1; | |
361 | triggerinout_conf.trgout_enable = 1; | |
362 | ||
363 | sigma_write_register(WRITE_TRIGGER_OPTION, | |
364 | (uint8_t *) &triggerinout_conf, | |
365 | sizeof(struct triggerinout), devc); | |
366 | ||
367 | /* Go back to normal mode. */ | |
368 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc); | |
369 | ||
370 | /* Set clock select register. */ | |
371 | if (devc->cur_samplerate == SR_MHZ(200)) | |
372 | /* Enable 4 channels. */ | |
373 | sigma_set_register(WRITE_CLOCK_SELECT, 0xf0, devc); | |
374 | else if (devc->cur_samplerate == SR_MHZ(100)) | |
375 | /* Enable 8 channels. */ | |
376 | sigma_set_register(WRITE_CLOCK_SELECT, 0x00, devc); | |
377 | else { | |
378 | /* | |
379 | * 50 MHz mode (or fraction thereof). Any fraction down to | |
380 | * 50 MHz / 256 can be used, but is not supported by sigrok API. | |
381 | */ | |
382 | frac = SR_MHZ(50) / devc->cur_samplerate - 1; | |
383 | ||
384 | clockselect.async = 0; | |
385 | clockselect.fraction = frac; | |
386 | clockselect.disabled_channels = 0; | |
387 | ||
388 | sigma_write_register(WRITE_CLOCK_SELECT, | |
389 | (uint8_t *) &clockselect, | |
390 | sizeof(clockselect), devc); | |
391 | } | |
392 | ||
393 | /* Setup maximum post trigger time. */ | |
394 | sigma_set_register(WRITE_POST_TRIGGER, | |
395 | (devc->capture_ratio * 255) / 100, devc); | |
396 | ||
397 | /* Start acqusition. */ | |
398 | gettimeofday(&devc->start_tv, 0); | |
399 | sigma_set_register(WRITE_MODE, 0x0d, devc); | |
400 | ||
401 | devc->cb_data = cb_data; | |
402 | ||
403 | /* Send header packet to the session bus. */ | |
404 | std_session_send_df_header(sdi, LOG_PREFIX); | |
405 | ||
406 | /* Add capture source. */ | |
407 | sr_session_source_add(sdi->session, -1, 0, 10, sigma_receive_data, (void *)sdi); | |
408 | ||
409 | devc->state.state = SIGMA_CAPTURE; | |
410 | ||
411 | return SR_OK; | |
412 | } | |
413 | ||
414 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
415 | { | |
416 | struct dev_context *devc; | |
417 | ||
418 | (void)cb_data; | |
419 | ||
420 | devc = sdi->priv; | |
421 | devc->state.state = SIGMA_IDLE; | |
422 | ||
423 | sr_session_source_remove(sdi->session, -1); | |
424 | ||
425 | return SR_OK; | |
426 | } | |
427 | ||
428 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info = { | |
429 | .name = "asix-sigma", | |
430 | .longname = "ASIX SIGMA/SIGMA2", | |
431 | .api_version = 1, | |
432 | .init = init, | |
433 | .cleanup = cleanup, | |
434 | .scan = scan, | |
435 | .dev_list = dev_list, | |
436 | .dev_clear = dev_clear, | |
437 | .config_get = config_get, | |
438 | .config_set = config_set, | |
439 | .config_list = config_list, | |
440 | .dev_open = dev_open, | |
441 | .dev_close = dev_close, | |
442 | .dev_acquisition_start = dev_acquisition_start, | |
443 | .dev_acquisition_stop = dev_acquisition_stop, | |
444 | .context = NULL, | |
445 | }; |