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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 | ||
3ba56876 | 191 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
192 | const struct sr_channel_group *cg) | |
193 | { | |
194 | struct dev_context *devc; | |
195 | ||
196 | (void)cg; | |
197 | ||
198 | if (!sdi) | |
199 | return SR_ERR; | |
200 | devc = sdi->priv; | |
201 | ||
202 | switch (key) { | |
203 | case SR_CONF_SAMPLERATE: | |
204 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
205 | break; | |
206 | case SR_CONF_LIMIT_MSEC: | |
207 | *data = g_variant_new_uint64(devc->limit_msec); | |
208 | break; | |
209 | case SR_CONF_CAPTURE_RATIO: | |
210 | *data = g_variant_new_uint64(devc->capture_ratio); | |
211 | break; | |
212 | default: | |
213 | return SR_ERR_NA; | |
214 | } | |
215 | ||
216 | return SR_OK; | |
217 | } | |
218 | ||
219 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
220 | const struct sr_channel_group *cg) | |
221 | { | |
222 | struct dev_context *devc; | |
223 | uint64_t tmp; | |
224 | int ret; | |
225 | ||
226 | (void)cg; | |
227 | ||
228 | if (sdi->status != SR_ST_ACTIVE) | |
229 | return SR_ERR_DEV_CLOSED; | |
230 | ||
231 | devc = sdi->priv; | |
232 | ||
233 | ret = SR_OK; | |
234 | switch (key) { | |
235 | case SR_CONF_SAMPLERATE: | |
236 | ret = sigma_set_samplerate(sdi, g_variant_get_uint64(data)); | |
237 | break; | |
238 | case SR_CONF_LIMIT_MSEC: | |
239 | tmp = g_variant_get_uint64(data); | |
240 | if (tmp > 0) | |
241 | devc->limit_msec = g_variant_get_uint64(data); | |
242 | else | |
243 | ret = SR_ERR; | |
244 | break; | |
245 | case SR_CONF_LIMIT_SAMPLES: | |
246 | tmp = g_variant_get_uint64(data); | |
247 | devc->limit_msec = tmp * 1000 / devc->cur_samplerate; | |
248 | break; | |
249 | case SR_CONF_CAPTURE_RATIO: | |
250 | tmp = g_variant_get_uint64(data); | |
251 | if (tmp <= 100) | |
252 | devc->capture_ratio = tmp; | |
253 | else | |
254 | ret = SR_ERR; | |
255 | break; | |
256 | default: | |
257 | ret = SR_ERR_NA; | |
258 | } | |
259 | ||
260 | return ret; | |
261 | } | |
262 | ||
263 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
264 | const struct sr_channel_group *cg) | |
265 | { | |
266 | GVariant *gvar; | |
267 | GVariantBuilder gvb; | |
268 | ||
269 | (void)cg; | |
270 | ||
271 | switch (key) { | |
272 | case SR_CONF_DEVICE_OPTIONS: | |
273 | if (!sdi) | |
274 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
275 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
276 | else | |
277 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
278 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
279 | break; | |
280 | case SR_CONF_SAMPLERATE: | |
281 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
282 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
283 | SAMPLERATES_COUNT, sizeof(uint64_t)); | |
284 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
285 | *data = g_variant_builder_end(&gvb); | |
286 | break; | |
287 | case SR_CONF_TRIGGER_MATCH: | |
288 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
289 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
290 | sizeof(int32_t)); | |
291 | break; | |
292 | default: | |
293 | return SR_ERR_NA; | |
294 | } | |
295 | ||
296 | return SR_OK; | |
297 | } | |
298 | ||
695dc859 | 299 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
3ba56876 | 300 | { |
301 | struct dev_context *devc; | |
302 | struct clockselect_50 clockselect; | |
303 | int frac, triggerpin, ret; | |
304 | uint8_t triggerselect = 0; | |
305 | struct triggerinout triggerinout_conf; | |
306 | struct triggerlut lut; | |
307 | ||
308 | if (sdi->status != SR_ST_ACTIVE) | |
309 | return SR_ERR_DEV_CLOSED; | |
310 | ||
311 | devc = sdi->priv; | |
312 | ||
313 | if (sigma_convert_trigger(sdi) != SR_OK) { | |
314 | sr_err("Failed to configure triggers."); | |
315 | return SR_ERR; | |
316 | } | |
317 | ||
318 | /* If the samplerate has not been set, default to 200 kHz. */ | |
319 | if (devc->cur_firmware == -1) { | |
320 | if ((ret = sigma_set_samplerate(sdi, SR_KHZ(200))) != SR_OK) | |
321 | return ret; | |
322 | } | |
323 | ||
324 | /* Enter trigger programming mode. */ | |
325 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc); | |
326 | ||
327 | /* 100 and 200 MHz mode. */ | |
328 | if (devc->cur_samplerate >= SR_MHZ(100)) { | |
329 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc); | |
330 | ||
331 | /* Find which pin to trigger on from mask. */ | |
0a1f7b09 | 332 | for (triggerpin = 0; triggerpin < 8; triggerpin++) |
3ba56876 | 333 | if ((devc->trigger.risingmask | devc->trigger.fallingmask) & |
334 | (1 << triggerpin)) | |
335 | break; | |
336 | ||
337 | /* Set trigger pin and light LED on trigger. */ | |
338 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
339 | ||
340 | /* Default rising edge. */ | |
341 | if (devc->trigger.fallingmask) | |
342 | triggerselect |= 1 << 3; | |
343 | ||
344 | /* All other modes. */ | |
345 | } else if (devc->cur_samplerate <= SR_MHZ(50)) { | |
346 | sigma_build_basic_trigger(&lut, devc); | |
347 | ||
348 | sigma_write_trigger_lut(&lut, devc); | |
349 | ||
350 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
351 | } | |
352 | ||
353 | /* Setup trigger in and out pins to default values. */ | |
354 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); | |
355 | triggerinout_conf.trgout_bytrigger = 1; | |
356 | triggerinout_conf.trgout_enable = 1; | |
357 | ||
358 | sigma_write_register(WRITE_TRIGGER_OPTION, | |
359 | (uint8_t *) &triggerinout_conf, | |
360 | sizeof(struct triggerinout), devc); | |
361 | ||
362 | /* Go back to normal mode. */ | |
363 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc); | |
364 | ||
365 | /* Set clock select register. */ | |
366 | if (devc->cur_samplerate == SR_MHZ(200)) | |
367 | /* Enable 4 channels. */ | |
368 | sigma_set_register(WRITE_CLOCK_SELECT, 0xf0, devc); | |
369 | else if (devc->cur_samplerate == SR_MHZ(100)) | |
370 | /* Enable 8 channels. */ | |
371 | sigma_set_register(WRITE_CLOCK_SELECT, 0x00, devc); | |
372 | else { | |
373 | /* | |
374 | * 50 MHz mode (or fraction thereof). Any fraction down to | |
375 | * 50 MHz / 256 can be used, but is not supported by sigrok API. | |
376 | */ | |
377 | frac = SR_MHZ(50) / devc->cur_samplerate - 1; | |
378 | ||
379 | clockselect.async = 0; | |
380 | clockselect.fraction = frac; | |
381 | clockselect.disabled_channels = 0; | |
382 | ||
383 | sigma_write_register(WRITE_CLOCK_SELECT, | |
384 | (uint8_t *) &clockselect, | |
385 | sizeof(clockselect), devc); | |
386 | } | |
387 | ||
388 | /* Setup maximum post trigger time. */ | |
389 | sigma_set_register(WRITE_POST_TRIGGER, | |
390 | (devc->capture_ratio * 255) / 100, devc); | |
391 | ||
392 | /* Start acqusition. */ | |
393 | gettimeofday(&devc->start_tv, 0); | |
394 | sigma_set_register(WRITE_MODE, 0x0d, devc); | |
395 | ||
3ba56876 | 396 | std_session_send_df_header(sdi, LOG_PREFIX); |
397 | ||
398 | /* Add capture source. */ | |
399 | sr_session_source_add(sdi->session, -1, 0, 10, sigma_receive_data, (void *)sdi); | |
400 | ||
401 | devc->state.state = SIGMA_CAPTURE; | |
402 | ||
403 | return SR_OK; | |
404 | } | |
405 | ||
695dc859 | 406 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
3ba56876 | 407 | { |
408 | struct dev_context *devc; | |
409 | ||
3ba56876 | 410 | devc = sdi->priv; |
411 | devc->state.state = SIGMA_IDLE; | |
412 | ||
413 | sr_session_source_remove(sdi->session, -1); | |
414 | ||
415 | return SR_OK; | |
416 | } | |
417 | ||
418 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info = { | |
419 | .name = "asix-sigma", | |
420 | .longname = "ASIX SIGMA/SIGMA2", | |
421 | .api_version = 1, | |
422 | .init = init, | |
700d6b64 | 423 | .cleanup = std_cleanup, |
3ba56876 | 424 | .scan = scan, |
425 | .dev_list = dev_list, | |
426 | .dev_clear = dev_clear, | |
427 | .config_get = config_get, | |
428 | .config_set = config_set, | |
429 | .config_list = config_list, | |
430 | .dev_open = dev_open, | |
431 | .dev_close = dev_close, | |
432 | .dev_acquisition_start = dev_acquisition_start, | |
433 | .dev_acquisition_stop = dev_acquisition_stop, | |
434 | .context = NULL, | |
435 | }; |