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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 | /* | |
30 | * Channel numbers seem to go from 1-16, according to this image: | |
31 | * http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg | |
32 | * (the cable has two additional GND pins, and a TI and TO pin) | |
33 | */ | |
34 | static const char *channel_names[] = { | |
35 | "1", "2", "3", "4", "5", "6", "7", "8", | |
36 | "9", "10", "11", "12", "13", "14", "15", "16", | |
37 | }; | |
38 | ||
39 | static const uint32_t drvopts[] = { | |
40 | SR_CONF_LOGIC_ANALYZER, | |
41 | }; | |
42 | ||
43 | static const uint32_t devopts[] = { | |
44 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
45 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
46 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
47 | #if ASIX_SIGMA_WITH_TRIGGER | |
48 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
49 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
50 | #endif | |
51 | }; | |
52 | ||
53 | #if ASIX_SIGMA_WITH_TRIGGER | |
54 | static const int32_t trigger_matches[] = { | |
55 | SR_TRIGGER_ZERO, | |
56 | SR_TRIGGER_ONE, | |
57 | SR_TRIGGER_RISING, | |
58 | SR_TRIGGER_FALLING, | |
59 | }; | |
60 | #endif | |
61 | ||
62 | static int dev_clear(const struct sr_dev_driver *di) | |
63 | { | |
64 | return std_dev_clear(di, sigma_clear_helper); | |
65 | } | |
66 | ||
67 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
68 | { | |
69 | struct sr_dev_inst *sdi; | |
70 | struct dev_context *devc; | |
71 | struct ftdi_device_list *devlist; | |
72 | char serial_txt[10]; | |
73 | uint32_t serial; | |
74 | int ret; | |
75 | unsigned int i; | |
76 | ||
77 | (void)options; | |
78 | ||
79 | devc = g_malloc0(sizeof(struct dev_context)); | |
80 | ||
81 | ftdi_init(&devc->ftdic); | |
82 | ||
83 | /* Look for SIGMAs. */ | |
84 | ||
85 | if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist, | |
86 | USB_VENDOR, USB_PRODUCT)) <= 0) { | |
87 | if (ret < 0) | |
88 | sr_err("ftdi_usb_find_all(): %d", ret); | |
89 | goto free; | |
90 | } | |
91 | ||
92 | /* Make sure it's a version 1 or 2 SIGMA. */ | |
93 | ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0, | |
94 | serial_txt, sizeof(serial_txt)); | |
95 | sscanf(serial_txt, "%x", &serial); | |
96 | ||
97 | if (serial < 0xa6010000 || serial > 0xa602ffff) { | |
98 | sr_err("Only SIGMA and SIGMA2 are supported " | |
99 | "in this version of libsigrok."); | |
100 | goto free; | |
101 | } | |
102 | ||
103 | sr_info("Found ASIX SIGMA - Serial: %s", serial_txt); | |
104 | ||
105 | devc->cur_samplerate = samplerates[0]; | |
106 | devc->limit_msec = 0; | |
107 | devc->limit_samples = 0; | |
108 | devc->cur_firmware = -1; | |
109 | devc->num_channels = 0; | |
110 | devc->samples_per_event = 0; | |
111 | devc->capture_ratio = 50; | |
112 | devc->use_triggers = 0; | |
113 | ||
114 | /* Register SIGMA device. */ | |
115 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
116 | sdi->status = SR_ST_INITIALIZING; | |
117 | sdi->vendor = g_strdup(USB_VENDOR_NAME); | |
118 | sdi->model = g_strdup(USB_MODEL_NAME); | |
119 | ||
120 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) | |
121 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_names[i]); | |
122 | ||
123 | sdi->priv = devc; | |
124 | ||
125 | /* We will open the device again when we need it. */ | |
126 | ftdi_list_free(&devlist); | |
127 | ||
128 | return std_scan_complete(di, g_slist_append(NULL, sdi)); | |
129 | ||
130 | free: | |
131 | ftdi_deinit(&devc->ftdic); | |
132 | g_free(devc); | |
133 | return NULL; | |
134 | } | |
135 | ||
136 | static int dev_open(struct sr_dev_inst *sdi) | |
137 | { | |
138 | struct dev_context *devc; | |
139 | int ret; | |
140 | ||
141 | devc = sdi->priv; | |
142 | ||
143 | /* Make sure it's an ASIX SIGMA. */ | |
144 | if ((ret = ftdi_usb_open_desc(&devc->ftdic, | |
145 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { | |
146 | ||
147 | sr_err("ftdi_usb_open failed: %s", | |
148 | ftdi_get_error_string(&devc->ftdic)); | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | sdi->status = SR_ST_ACTIVE; | |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
158 | static int dev_close(struct sr_dev_inst *sdi) | |
159 | { | |
160 | struct dev_context *devc; | |
161 | ||
162 | devc = sdi->priv; | |
163 | ||
164 | /* TODO */ | |
165 | if (sdi->status == SR_ST_ACTIVE) | |
166 | ftdi_usb_close(&devc->ftdic); | |
167 | ||
168 | sdi->status = SR_ST_INACTIVE; | |
169 | ||
170 | return SR_OK; | |
171 | } | |
172 | ||
173 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
174 | const struct sr_channel_group *cg) | |
175 | { | |
176 | struct dev_context *devc; | |
177 | ||
178 | (void)cg; | |
179 | ||
180 | if (!sdi) | |
181 | return SR_ERR; | |
182 | devc = sdi->priv; | |
183 | ||
184 | switch (key) { | |
185 | case SR_CONF_SAMPLERATE: | |
186 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
187 | break; | |
188 | case SR_CONF_LIMIT_MSEC: | |
189 | *data = g_variant_new_uint64(devc->limit_msec); | |
190 | break; | |
191 | case SR_CONF_LIMIT_SAMPLES: | |
192 | *data = g_variant_new_uint64(devc->limit_samples); | |
193 | break; | |
194 | #if ASIX_SIGMA_WITH_TRIGGER | |
195 | case SR_CONF_CAPTURE_RATIO: | |
196 | *data = g_variant_new_uint64(devc->capture_ratio); | |
197 | break; | |
198 | #endif | |
199 | default: | |
200 | return SR_ERR_NA; | |
201 | } | |
202 | ||
203 | return SR_OK; | |
204 | } | |
205 | ||
206 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
207 | const struct sr_channel_group *cg) | |
208 | { | |
209 | struct dev_context *devc; | |
210 | uint64_t tmp; | |
211 | int ret; | |
212 | ||
213 | (void)cg; | |
214 | ||
215 | if (sdi->status != SR_ST_ACTIVE) | |
216 | return SR_ERR_DEV_CLOSED; | |
217 | ||
218 | devc = sdi->priv; | |
219 | ||
220 | ret = SR_OK; | |
221 | switch (key) { | |
222 | case SR_CONF_SAMPLERATE: | |
223 | ret = sigma_set_samplerate(sdi, g_variant_get_uint64(data)); | |
224 | break; | |
225 | case SR_CONF_LIMIT_MSEC: | |
226 | tmp = g_variant_get_uint64(data); | |
227 | if (tmp > 0) | |
228 | devc->limit_msec = g_variant_get_uint64(data); | |
229 | else | |
230 | ret = SR_ERR; | |
231 | break; | |
232 | case SR_CONF_LIMIT_SAMPLES: | |
233 | tmp = g_variant_get_uint64(data); | |
234 | devc->limit_samples = tmp; | |
235 | devc->limit_msec = sigma_limit_samples_to_msec(devc, tmp); | |
236 | break; | |
237 | #if ASIX_SIGMA_WITH_TRIGGER | |
238 | case SR_CONF_CAPTURE_RATIO: | |
239 | tmp = g_variant_get_uint64(data); | |
240 | if (tmp > 100) | |
241 | return SR_ERR; | |
242 | devc->capture_ratio = tmp; | |
243 | break; | |
244 | #endif | |
245 | default: | |
246 | ret = SR_ERR_NA; | |
247 | } | |
248 | ||
249 | return ret; | |
250 | } | |
251 | ||
252 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
253 | const struct sr_channel_group *cg) | |
254 | { | |
255 | GVariant *gvar; | |
256 | GVariantBuilder gvb; | |
257 | ||
258 | (void)cg; | |
259 | ||
260 | switch (key) { | |
261 | case SR_CONF_DEVICE_OPTIONS: | |
262 | if (!sdi) | |
263 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
264 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
265 | else | |
266 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
267 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
268 | break; | |
269 | case SR_CONF_SAMPLERATE: | |
270 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
271 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
272 | samplerates_count, sizeof(samplerates[0])); | |
273 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
274 | *data = g_variant_builder_end(&gvb); | |
275 | break; | |
276 | #if ASIX_SIGMA_WITH_TRIGGER | |
277 | case SR_CONF_TRIGGER_MATCH: | |
278 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
279 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
280 | sizeof(int32_t)); | |
281 | break; | |
282 | #endif | |
283 | default: | |
284 | return SR_ERR_NA; | |
285 | } | |
286 | ||
287 | return SR_OK; | |
288 | } | |
289 | ||
290 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
291 | { | |
292 | struct dev_context *devc; | |
293 | struct clockselect_50 clockselect; | |
294 | int triggerpin, ret; | |
295 | uint8_t triggerselect; | |
296 | struct triggerinout triggerinout_conf; | |
297 | struct triggerlut lut; | |
298 | uint8_t regval; | |
299 | uint8_t clock_bytes[sizeof(clockselect)]; | |
300 | size_t clock_idx; | |
301 | ||
302 | if (sdi->status != SR_ST_ACTIVE) | |
303 | return SR_ERR_DEV_CLOSED; | |
304 | ||
305 | devc = sdi->priv; | |
306 | ||
307 | if (sigma_convert_trigger(sdi) != SR_OK) { | |
308 | sr_err("Failed to configure triggers."); | |
309 | return SR_ERR; | |
310 | } | |
311 | ||
312 | /* If the samplerate has not been set, default to 200 kHz. */ | |
313 | if (devc->cur_firmware == -1) { | |
314 | if ((ret = sigma_set_samplerate(sdi, SR_KHZ(200))) != SR_OK) | |
315 | return ret; | |
316 | } | |
317 | ||
318 | /* Enter trigger programming mode. */ | |
319 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc); | |
320 | ||
321 | triggerselect = 0; | |
322 | if (devc->cur_samplerate >= SR_MHZ(100)) { | |
323 | /* 100 and 200 MHz mode. */ | |
324 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc); | |
325 | ||
326 | /* Find which pin to trigger on from mask. */ | |
327 | for (triggerpin = 0; triggerpin < 8; triggerpin++) | |
328 | if ((devc->trigger.risingmask | devc->trigger.fallingmask) & | |
329 | (1 << triggerpin)) | |
330 | break; | |
331 | ||
332 | /* Set trigger pin and light LED on trigger. */ | |
333 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
334 | ||
335 | /* Default rising edge. */ | |
336 | if (devc->trigger.fallingmask) | |
337 | triggerselect |= 1 << 3; | |
338 | ||
339 | } else if (devc->cur_samplerate <= SR_MHZ(50)) { | |
340 | /* All other modes. */ | |
341 | sigma_build_basic_trigger(&lut, devc); | |
342 | ||
343 | sigma_write_trigger_lut(&lut, devc); | |
344 | ||
345 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
346 | } | |
347 | ||
348 | /* Setup trigger in and out pins to default values. */ | |
349 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); | |
350 | triggerinout_conf.trgout_bytrigger = 1; | |
351 | triggerinout_conf.trgout_enable = 1; | |
352 | ||
353 | sigma_write_register(WRITE_TRIGGER_OPTION, | |
354 | (uint8_t *) &triggerinout_conf, | |
355 | sizeof(struct triggerinout), devc); | |
356 | ||
357 | /* Go back to normal mode. */ | |
358 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc); | |
359 | ||
360 | /* Set clock select register. */ | |
361 | clockselect.async = 0; | |
362 | clockselect.fraction = 1 - 1; /* Divider 1. */ | |
363 | clockselect.disabled_channels = 0x0000; /* All channels enabled. */ | |
364 | if (devc->cur_samplerate == SR_MHZ(200)) { | |
365 | /* Enable 4 channels. */ | |
366 | clockselect.disabled_channels = 0xf0ff; | |
367 | } else if (devc->cur_samplerate == SR_MHZ(100)) { | |
368 | /* Enable 8 channels. */ | |
369 | clockselect.disabled_channels = 0x00ff; | |
370 | } else { | |
371 | /* | |
372 | * 50 MHz mode, or fraction thereof. The 50MHz reference | |
373 | * can get divided by any integer in the range 1 to 256. | |
374 | * Divider minus 1 gets written to the hardware. | |
375 | * (The driver lists a discrete set of sample rates, but | |
376 | * all of them fit the above description.) | |
377 | */ | |
378 | clockselect.fraction = SR_MHZ(50) / devc->cur_samplerate - 1; | |
379 | } | |
380 | clock_idx = 0; | |
381 | clock_bytes[clock_idx++] = clockselect.async; | |
382 | clock_bytes[clock_idx++] = clockselect.fraction; | |
383 | clock_bytes[clock_idx++] = clockselect.disabled_channels & 0xff; | |
384 | clock_bytes[clock_idx++] = clockselect.disabled_channels >> 8; | |
385 | sigma_write_register(WRITE_CLOCK_SELECT, clock_bytes, clock_idx, devc); | |
386 | ||
387 | /* Setup maximum post trigger time. */ | |
388 | sigma_set_register(WRITE_POST_TRIGGER, | |
389 | (devc->capture_ratio * 255) / 100, devc); | |
390 | ||
391 | /* Start acqusition. */ | |
392 | devc->start_time = g_get_monotonic_time(); | |
393 | regval = WMR_TRGRES | WMR_SDRAMWRITEEN; | |
394 | #if ASIX_SIGMA_WITH_TRIGGER | |
395 | regval |= WMR_TRGEN; | |
396 | #endif | |
397 | sigma_set_register(WRITE_MODE, regval, devc); | |
398 | ||
399 | std_session_send_df_header(sdi); | |
400 | ||
401 | /* Add capture source. */ | |
402 | sr_session_source_add(sdi->session, -1, 0, 10, sigma_receive_data, (void *)sdi); | |
403 | ||
404 | devc->state.state = SIGMA_CAPTURE; | |
405 | ||
406 | return SR_OK; | |
407 | } | |
408 | ||
409 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
410 | { | |
411 | struct dev_context *devc; | |
412 | ||
413 | devc = sdi->priv; | |
414 | devc->state.state = SIGMA_IDLE; | |
415 | ||
416 | sr_session_source_remove(sdi->session, -1); | |
417 | ||
418 | return SR_OK; | |
419 | } | |
420 | ||
421 | static struct sr_dev_driver asix_sigma_driver_info = { | |
422 | .name = "asix-sigma", | |
423 | .longname = "ASIX SIGMA/SIGMA2", | |
424 | .api_version = 1, | |
425 | .init = std_init, | |
426 | .cleanup = std_cleanup, | |
427 | .scan = scan, | |
428 | .dev_list = std_dev_list, | |
429 | .dev_clear = dev_clear, | |
430 | .config_get = config_get, | |
431 | .config_set = config_set, | |
432 | .config_list = config_list, | |
433 | .dev_open = dev_open, | |
434 | .dev_close = dev_close, | |
435 | .dev_acquisition_start = dev_acquisition_start, | |
436 | .dev_acquisition_stop = dev_acquisition_stop, | |
437 | .context = NULL, | |
438 | }; | |
439 | SR_REGISTER_DEV_DRIVER(asix_sigma_driver_info); |