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Commit | Line | Data |
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28a35d8a | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
28a35d8a | 3 | * |
868501fa | 4 | * Copyright (C) 2010-2012 Håvard Espeland <gus@ping.uio.no>, |
911f1834 UH |
5 | * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no> |
6 | * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no> | |
28a35d8a HE |
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 | ||
911f1834 | 22 | /* |
6352d030 | 23 | * ASIX SIGMA/SIGMA2 logic analyzer driver |
911f1834 UH |
24 | */ |
25 | ||
3bbd9849 UH |
26 | #include <glib.h> |
27 | #include <glib/gstdio.h> | |
28a35d8a HE |
28 | #include <ftdi.h> |
29 | #include <string.h> | |
e15e5873 | 30 | #include <unistd.h> |
45c59c8b BV |
31 | #include "libsigrok.h" |
32 | #include "libsigrok-internal.h" | |
28a35d8a HE |
33 | #include "asix-sigma.h" |
34 | ||
35 | #define USB_VENDOR 0xa600 | |
36 | #define USB_PRODUCT 0xa000 | |
37 | #define USB_DESCRIPTION "ASIX SIGMA" | |
38 | #define USB_VENDOR_NAME "ASIX" | |
39 | #define USB_MODEL_NAME "SIGMA" | |
28a35d8a | 40 | |
ed300b9f | 41 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info; |
a873c594 | 42 | static struct sr_dev_driver *di = &asix_sigma_driver_info; |
6078d2c9 | 43 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
28a35d8a | 44 | |
b1648dea MV |
45 | /* |
46 | * The ASIX Sigma supports arbitrary integer frequency divider in | |
47 | * the 50MHz mode. The divider is in range 1...256 , allowing for | |
48 | * very precise sampling rate selection. This driver supports only | |
49 | * a subset of the sampling rates. | |
50 | */ | |
2c9c0df8 | 51 | static const uint64_t samplerates[] = { |
b1648dea MV |
52 | SR_KHZ(200), /* div=250 */ |
53 | SR_KHZ(250), /* div=200 */ | |
54 | SR_KHZ(500), /* div=100 */ | |
55 | SR_MHZ(1), /* div=50 */ | |
56 | SR_MHZ(5), /* div=10 */ | |
57 | SR_MHZ(10), /* div=5 */ | |
58 | SR_MHZ(25), /* div=2 */ | |
59 | SR_MHZ(50), /* div=1 */ | |
60 | SR_MHZ(100), /* Special FW needed */ | |
61 | SR_MHZ(200), /* Special FW needed */ | |
28a35d8a HE |
62 | }; |
63 | ||
d261dbbf | 64 | /* |
ba7dd8bb | 65 | * Channel numbers seem to go from 1-16, according to this image: |
d261dbbf UH |
66 | * http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg |
67 | * (the cable has two additional GND pins, and a TI and TO pin) | |
68 | */ | |
790c7ccc | 69 | static const char *channel_names[] = { |
78693401 UH |
70 | "1", "2", "3", "4", "5", "6", "7", "8", |
71 | "9", "10", "11", "12", "13", "14", "15", "16", | |
464d12c7 KS |
72 | }; |
73 | ||
2ff11e50 | 74 | static const uint32_t drvopts[] = { |
1953564a | 75 | SR_CONF_LOGIC_ANALYZER, |
e7ba5a99 BV |
76 | }; |
77 | ||
2ff11e50 BV |
78 | static const uint32_t devopts[] = { |
79 | SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET, | |
80 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
5827f61b BV |
81 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
82 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
83 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
28a35d8a HE |
84 | }; |
85 | ||
39c64c6a BV |
86 | static const int32_t trigger_matches[] = { |
87 | SR_TRIGGER_ZERO, | |
88 | SR_TRIGGER_ONE, | |
89 | SR_TRIGGER_RISING, | |
90 | SR_TRIGGER_FALLING, | |
91 | }; | |
92 | ||
499b17e9 MV |
93 | static const char *sigma_firmware_files[] = { |
94 | /* 50 MHz, supports 8 bit fractions */ | |
95 | FIRMWARE_DIR "/asix-sigma-50.fw", | |
96 | /* 100 MHz */ | |
97 | FIRMWARE_DIR "/asix-sigma-100.fw", | |
98 | /* 200 MHz */ | |
99 | FIRMWARE_DIR "/asix-sigma-200.fw", | |
100 | /* Synchronous clock from pin */ | |
101 | FIRMWARE_DIR "/asix-sigma-50sync.fw", | |
102 | /* Frequency counter */ | |
103 | FIRMWARE_DIR "/asix-sigma-phasor.fw", | |
f6564c8d HE |
104 | }; |
105 | ||
0e1357e8 | 106 | static int sigma_read(void *buf, size_t size, struct dev_context *devc) |
28a35d8a HE |
107 | { |
108 | int ret; | |
fefa1800 | 109 | |
0e1357e8 | 110 | ret = ftdi_read_data(&devc->ftdic, (unsigned char *)buf, size); |
28a35d8a | 111 | if (ret < 0) { |
47f4f073 | 112 | sr_err("ftdi_read_data failed: %s", |
0e1357e8 | 113 | ftdi_get_error_string(&devc->ftdic)); |
28a35d8a HE |
114 | } |
115 | ||
116 | return ret; | |
117 | } | |
118 | ||
0e1357e8 | 119 | static int sigma_write(void *buf, size_t size, struct dev_context *devc) |
28a35d8a HE |
120 | { |
121 | int ret; | |
fefa1800 | 122 | |
0e1357e8 | 123 | ret = ftdi_write_data(&devc->ftdic, (unsigned char *)buf, size); |
28a35d8a | 124 | if (ret < 0) { |
47f4f073 | 125 | sr_err("ftdi_write_data failed: %s", |
0e1357e8 | 126 | ftdi_get_error_string(&devc->ftdic)); |
fefa1800 | 127 | } else if ((size_t) ret != size) { |
47f4f073 | 128 | sr_err("ftdi_write_data did not complete write."); |
28a35d8a HE |
129 | } |
130 | ||
131 | return ret; | |
132 | } | |
133 | ||
99965709 | 134 | static int sigma_write_register(uint8_t reg, uint8_t *data, size_t len, |
0e1357e8 | 135 | struct dev_context *devc) |
28a35d8a HE |
136 | { |
137 | size_t i; | |
138 | uint8_t buf[len + 2]; | |
139 | int idx = 0; | |
140 | ||
141 | buf[idx++] = REG_ADDR_LOW | (reg & 0xf); | |
142 | buf[idx++] = REG_ADDR_HIGH | (reg >> 4); | |
143 | ||
fefa1800 | 144 | for (i = 0; i < len; ++i) { |
28a35d8a HE |
145 | buf[idx++] = REG_DATA_LOW | (data[i] & 0xf); |
146 | buf[idx++] = REG_DATA_HIGH_WRITE | (data[i] >> 4); | |
147 | } | |
148 | ||
0e1357e8 | 149 | return sigma_write(buf, idx, devc); |
28a35d8a HE |
150 | } |
151 | ||
0e1357e8 | 152 | static int sigma_set_register(uint8_t reg, uint8_t value, struct dev_context *devc) |
28a35d8a | 153 | { |
0e1357e8 | 154 | return sigma_write_register(reg, &value, 1, devc); |
28a35d8a HE |
155 | } |
156 | ||
99965709 | 157 | static int sigma_read_register(uint8_t reg, uint8_t *data, size_t len, |
0e1357e8 | 158 | struct dev_context *devc) |
28a35d8a HE |
159 | { |
160 | uint8_t buf[3]; | |
fefa1800 | 161 | |
28a35d8a HE |
162 | buf[0] = REG_ADDR_LOW | (reg & 0xf); |
163 | buf[1] = REG_ADDR_HIGH | (reg >> 4); | |
28a35d8a HE |
164 | buf[2] = REG_READ_ADDR; |
165 | ||
0e1357e8 | 166 | sigma_write(buf, sizeof(buf), devc); |
28a35d8a | 167 | |
0e1357e8 | 168 | return sigma_read(data, len, devc); |
28a35d8a HE |
169 | } |
170 | ||
0e1357e8 | 171 | static uint8_t sigma_get_register(uint8_t reg, struct dev_context *devc) |
28a35d8a HE |
172 | { |
173 | uint8_t value; | |
fefa1800 | 174 | |
0e1357e8 | 175 | if (1 != sigma_read_register(reg, &value, 1, devc)) { |
47f4f073 | 176 | sr_err("sigma_get_register: 1 byte expected"); |
28a35d8a HE |
177 | return 0; |
178 | } | |
179 | ||
180 | return value; | |
181 | } | |
182 | ||
99965709 | 183 | static int sigma_read_pos(uint32_t *stoppos, uint32_t *triggerpos, |
0e1357e8 | 184 | struct dev_context *devc) |
28a35d8a HE |
185 | { |
186 | uint8_t buf[] = { | |
187 | REG_ADDR_LOW | READ_TRIGGER_POS_LOW, | |
188 | ||
189 | REG_READ_ADDR | NEXT_REG, | |
190 | REG_READ_ADDR | NEXT_REG, | |
191 | REG_READ_ADDR | NEXT_REG, | |
192 | REG_READ_ADDR | NEXT_REG, | |
193 | REG_READ_ADDR | NEXT_REG, | |
194 | REG_READ_ADDR | NEXT_REG, | |
195 | }; | |
28a35d8a HE |
196 | uint8_t result[6]; |
197 | ||
0e1357e8 | 198 | sigma_write(buf, sizeof(buf), devc); |
28a35d8a | 199 | |
0e1357e8 | 200 | sigma_read(result, sizeof(result), devc); |
28a35d8a HE |
201 | |
202 | *triggerpos = result[0] | (result[1] << 8) | (result[2] << 16); | |
203 | *stoppos = result[3] | (result[4] << 8) | (result[5] << 16); | |
204 | ||
57bbf56b HE |
205 | /* Not really sure why this must be done, but according to spec. */ |
206 | if ((--*stoppos & 0x1ff) == 0x1ff) | |
382cb19f | 207 | *stoppos -= 64; |
57bbf56b HE |
208 | |
209 | if ((*--triggerpos & 0x1ff) == 0x1ff) | |
382cb19f | 210 | *triggerpos -= 64; |
57bbf56b | 211 | |
28a35d8a HE |
212 | return 1; |
213 | } | |
214 | ||
99965709 | 215 | static int sigma_read_dram(uint16_t startchunk, size_t numchunks, |
0e1357e8 | 216 | uint8_t *data, struct dev_context *devc) |
28a35d8a HE |
217 | { |
218 | size_t i; | |
219 | uint8_t buf[4096]; | |
220 | int idx = 0; | |
221 | ||
fefa1800 | 222 | /* Send the startchunk. Index start with 1. */ |
28a35d8a HE |
223 | buf[0] = startchunk >> 8; |
224 | buf[1] = startchunk & 0xff; | |
0e1357e8 | 225 | sigma_write_register(WRITE_MEMROW, buf, 2, devc); |
28a35d8a | 226 | |
fefa1800 | 227 | /* Read the DRAM. */ |
28a35d8a HE |
228 | buf[idx++] = REG_DRAM_BLOCK; |
229 | buf[idx++] = REG_DRAM_WAIT_ACK; | |
230 | ||
231 | for (i = 0; i < numchunks; ++i) { | |
fefa1800 UH |
232 | /* Alternate bit to copy from DRAM to cache. */ |
233 | if (i != (numchunks - 1)) | |
234 | buf[idx++] = REG_DRAM_BLOCK | (((i + 1) % 2) << 4); | |
28a35d8a HE |
235 | |
236 | buf[idx++] = REG_DRAM_BLOCK_DATA | ((i % 2) << 4); | |
237 | ||
fefa1800 | 238 | if (i != (numchunks - 1)) |
28a35d8a HE |
239 | buf[idx++] = REG_DRAM_WAIT_ACK; |
240 | } | |
241 | ||
0e1357e8 | 242 | sigma_write(buf, idx, devc); |
28a35d8a | 243 | |
0e1357e8 | 244 | return sigma_read(data, numchunks * CHUNK_SIZE, devc); |
28a35d8a HE |
245 | } |
246 | ||
4ae1f451 | 247 | /* Upload trigger look-up tables to Sigma. */ |
0e1357e8 | 248 | static int sigma_write_trigger_lut(struct triggerlut *lut, struct dev_context *devc) |
ee492173 HE |
249 | { |
250 | int i; | |
251 | uint8_t tmp[2]; | |
252 | uint16_t bit; | |
253 | ||
254 | /* Transpose the table and send to Sigma. */ | |
255 | for (i = 0; i < 16; ++i) { | |
256 | bit = 1 << i; | |
257 | ||
258 | tmp[0] = tmp[1] = 0; | |
259 | ||
260 | if (lut->m2d[0] & bit) | |
261 | tmp[0] |= 0x01; | |
262 | if (lut->m2d[1] & bit) | |
263 | tmp[0] |= 0x02; | |
264 | if (lut->m2d[2] & bit) | |
265 | tmp[0] |= 0x04; | |
266 | if (lut->m2d[3] & bit) | |
267 | tmp[0] |= 0x08; | |
268 | ||
269 | if (lut->m3 & bit) | |
270 | tmp[0] |= 0x10; | |
271 | if (lut->m3s & bit) | |
272 | tmp[0] |= 0x20; | |
273 | if (lut->m4 & bit) | |
274 | tmp[0] |= 0x40; | |
275 | ||
276 | if (lut->m0d[0] & bit) | |
277 | tmp[1] |= 0x01; | |
278 | if (lut->m0d[1] & bit) | |
279 | tmp[1] |= 0x02; | |
280 | if (lut->m0d[2] & bit) | |
281 | tmp[1] |= 0x04; | |
282 | if (lut->m0d[3] & bit) | |
283 | tmp[1] |= 0x08; | |
284 | ||
285 | if (lut->m1d[0] & bit) | |
286 | tmp[1] |= 0x10; | |
287 | if (lut->m1d[1] & bit) | |
288 | tmp[1] |= 0x20; | |
289 | if (lut->m1d[2] & bit) | |
290 | tmp[1] |= 0x40; | |
291 | if (lut->m1d[3] & bit) | |
292 | tmp[1] |= 0x80; | |
293 | ||
99965709 | 294 | sigma_write_register(WRITE_TRIGGER_SELECT0, tmp, sizeof(tmp), |
0e1357e8 BV |
295 | devc); |
296 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x30 | i, devc); | |
ee492173 HE |
297 | } |
298 | ||
299 | /* Send the parameters */ | |
300 | sigma_write_register(WRITE_TRIGGER_SELECT0, (uint8_t *) &lut->params, | |
0e1357e8 | 301 | sizeof(lut->params), devc); |
ee492173 | 302 | |
e46b8fb1 | 303 | return SR_OK; |
ee492173 HE |
304 | } |
305 | ||
3678cf73 | 306 | static void clear_helper(void *priv) |
0448d110 | 307 | { |
0e1357e8 | 308 | struct dev_context *devc; |
ce4d26dd | 309 | |
3678cf73 | 310 | devc = priv; |
0e1357e8 | 311 | |
3678cf73 UH |
312 | ftdi_deinit(&devc->ftdic); |
313 | } | |
0448d110 | 314 | |
3b412e3a | 315 | static int dev_clear(void) |
3678cf73 UH |
316 | { |
317 | return std_dev_clear(di, clear_helper); | |
0448d110 BV |
318 | } |
319 | ||
6078d2c9 | 320 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 321 | { |
f6beaac5 | 322 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
323 | } |
324 | ||
6078d2c9 | 325 | static GSList *scan(GSList *options) |
28a35d8a | 326 | { |
d68e2d1a | 327 | struct sr_dev_inst *sdi; |
ba7dd8bb | 328 | struct sr_channel *ch; |
0e1357e8 BV |
329 | struct drv_context *drvc; |
330 | struct dev_context *devc; | |
0448d110 | 331 | GSList *devices; |
e3fff420 HE |
332 | struct ftdi_device_list *devlist; |
333 | char serial_txt[10]; | |
334 | uint32_t serial; | |
790c7ccc MV |
335 | int ret; |
336 | unsigned int i; | |
28a35d8a | 337 | |
0448d110 | 338 | (void)options; |
64d33dc2 | 339 | |
a873c594 | 340 | drvc = di->priv; |
4b97c74e | 341 | |
0448d110 | 342 | devices = NULL; |
4b97c74e | 343 | |
f57d8ffe | 344 | devc = g_malloc0(sizeof(struct dev_context)); |
99965709 | 345 | |
0e1357e8 | 346 | ftdi_init(&devc->ftdic); |
28a35d8a | 347 | |
fefa1800 | 348 | /* Look for SIGMAs. */ |
e3fff420 | 349 | |
0e1357e8 | 350 | if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist, |
eec944c5 BV |
351 | USB_VENDOR, USB_PRODUCT)) <= 0) { |
352 | if (ret < 0) | |
353 | sr_err("ftdi_usb_find_all(): %d", ret); | |
99965709 | 354 | goto free; |
eec944c5 | 355 | } |
99965709 | 356 | |
e3fff420 | 357 | /* Make sure it's a version 1 or 2 SIGMA. */ |
0e1357e8 | 358 | ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0, |
6352d030 | 359 | serial_txt, sizeof(serial_txt)); |
e3fff420 HE |
360 | sscanf(serial_txt, "%x", &serial); |
361 | ||
6352d030 | 362 | if (serial < 0xa6010000 || serial > 0xa602ffff) { |
47f4f073 UH |
363 | sr_err("Only SIGMA and SIGMA2 are supported " |
364 | "in this version of libsigrok."); | |
e3fff420 HE |
365 | goto free; |
366 | } | |
367 | ||
368 | sr_info("Found ASIX SIGMA - Serial: %s", serial_txt); | |
369 | ||
23b886bc | 370 | devc->cur_samplerate = samplerates[0]; |
0e1357e8 BV |
371 | devc->period_ps = 0; |
372 | devc->limit_msec = 0; | |
373 | devc->cur_firmware = -1; | |
ba7dd8bb | 374 | devc->num_channels = 0; |
0e1357e8 BV |
375 | devc->samples_per_event = 0; |
376 | devc->capture_ratio = 50; | |
377 | devc->use_triggers = 0; | |
28a35d8a | 378 | |
fefa1800 | 379 | /* Register SIGMA device. */ |
aac29cc1 | 380 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
381 | sdi->status = SR_ST_INITIALIZING; |
382 | sdi->vendor = g_strdup(USB_VENDOR_NAME); | |
383 | sdi->model = g_strdup(USB_MODEL_NAME); | |
a873c594 | 384 | sdi->driver = di; |
87ca93c5 | 385 | |
790c7ccc MV |
386 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { |
387 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, | |
388 | channel_names[i]); | |
ba7dd8bb | 389 | sdi->channels = g_slist_append(sdi->channels, ch); |
87ca93c5 BV |
390 | } |
391 | ||
0448d110 | 392 | devices = g_slist_append(devices, sdi); |
0e1357e8 BV |
393 | drvc->instances = g_slist_append(drvc->instances, sdi); |
394 | sdi->priv = devc; | |
28a35d8a | 395 | |
fefa1800 | 396 | /* We will open the device again when we need it. */ |
e3fff420 | 397 | ftdi_list_free(&devlist); |
28a35d8a | 398 | |
0448d110 | 399 | return devices; |
ea9cfed7 | 400 | |
99965709 | 401 | free: |
0e1357e8 BV |
402 | ftdi_deinit(&devc->ftdic); |
403 | g_free(devc); | |
0448d110 | 404 | return NULL; |
28a35d8a HE |
405 | } |
406 | ||
6078d2c9 | 407 | static GSList *dev_list(void) |
811deee4 | 408 | { |
0e94d524 | 409 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
410 | } |
411 | ||
d5fa188a MV |
412 | /* |
413 | * Configure the FPGA for bitbang mode. | |
414 | * This sequence is documented in section 2. of the ASIX Sigma programming | |
415 | * manual. This sequence is necessary to configure the FPGA in the Sigma | |
416 | * into Bitbang mode, in which it can be programmed with the firmware. | |
417 | */ | |
418 | static int sigma_fpga_init_bitbang(struct dev_context *devc) | |
419 | { | |
420 | uint8_t suicide[] = { | |
421 | 0x84, 0x84, 0x88, 0x84, 0x88, 0x84, 0x88, 0x84, | |
422 | }; | |
423 | uint8_t init_array[] = { | |
424 | 0x01, 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, | |
425 | 0x01, 0x01, | |
426 | }; | |
427 | int i, ret, timeout = 10000; | |
428 | uint8_t data; | |
429 | ||
430 | /* Section 2. part 1), do the FPGA suicide. */ | |
431 | sigma_write(suicide, sizeof(suicide), devc); | |
432 | sigma_write(suicide, sizeof(suicide), devc); | |
433 | sigma_write(suicide, sizeof(suicide), devc); | |
434 | sigma_write(suicide, sizeof(suicide), devc); | |
435 | ||
436 | /* Section 2. part 2), do pulse on D1. */ | |
437 | sigma_write(init_array, sizeof(init_array), devc); | |
438 | ftdi_usb_purge_buffers(&devc->ftdic); | |
439 | ||
440 | /* Wait until the FPGA asserts D6/INIT_B. */ | |
441 | for (i = 0; i < timeout; i++) { | |
442 | ret = sigma_read(&data, 1, devc); | |
443 | if (ret < 0) | |
444 | return ret; | |
445 | /* Test if pin D6 got asserted. */ | |
446 | if (data & (1 << 5)) | |
447 | return 0; | |
448 | /* The D6 was not asserted yet, wait a bit. */ | |
449 | usleep(10000); | |
450 | } | |
451 | ||
452 | return SR_ERR_TIMEOUT; | |
453 | } | |
454 | ||
64fe661b MV |
455 | /* |
456 | * Configure the FPGA for logic-analyzer mode. | |
457 | */ | |
458 | static int sigma_fpga_init_la(struct dev_context *devc) | |
459 | { | |
460 | /* Initialize the logic analyzer mode. */ | |
461 | uint8_t logic_mode_start[] = { | |
011f1091 MV |
462 | REG_ADDR_LOW | (READ_ID & 0xf), |
463 | REG_ADDR_HIGH | (READ_ID >> 8), | |
464 | REG_READ_ADDR, /* Read ID register. */ | |
465 | ||
466 | REG_ADDR_LOW | (WRITE_TEST & 0xf), | |
467 | REG_DATA_LOW | 0x5, | |
468 | REG_DATA_HIGH_WRITE | 0x5, | |
469 | REG_READ_ADDR, /* Read scratch register. */ | |
470 | ||
471 | REG_DATA_LOW | 0xa, | |
472 | REG_DATA_HIGH_WRITE | 0xa, | |
473 | REG_READ_ADDR, /* Read scratch register. */ | |
474 | ||
475 | REG_ADDR_LOW | (WRITE_MODE & 0xf), | |
476 | REG_DATA_LOW | 0x0, | |
477 | REG_DATA_HIGH_WRITE | 0x8, | |
64fe661b MV |
478 | }; |
479 | ||
480 | uint8_t result[3]; | |
481 | int ret; | |
482 | ||
483 | /* Initialize the logic analyzer mode. */ | |
484 | sigma_write(logic_mode_start, sizeof(logic_mode_start), devc); | |
485 | ||
011f1091 | 486 | /* Expect a 3 byte reply since we issued three READ requests. */ |
64fe661b MV |
487 | ret = sigma_read(result, 3, devc); |
488 | if (ret != 3) | |
489 | goto err; | |
490 | ||
491 | if (result[0] != 0xa6 || result[1] != 0x55 || result[2] != 0xaa) | |
492 | goto err; | |
493 | ||
494 | return SR_OK; | |
495 | err: | |
496 | sr_err("Configuration failed. Invalid reply received."); | |
497 | return SR_ERR; | |
498 | } | |
499 | ||
a80226bb MV |
500 | /* |
501 | * Read the firmware from a file and transform it into a series of bitbang | |
502 | * pulses used to program the FPGA. Note that the *bb_cmd must be free()'d | |
503 | * by the caller of this function. | |
504 | */ | |
505 | static int sigma_fw_2_bitbang(const char *filename, | |
506 | uint8_t **bb_cmd, gsize *bb_cmd_size) | |
507 | { | |
508 | GMappedFile *file; | |
509 | GError *error; | |
510 | gsize i, file_size, bb_size; | |
511 | gchar *firmware; | |
512 | uint8_t *bb_stream, *bbs; | |
513 | uint32_t imm; | |
514 | int bit, v; | |
515 | int ret = SR_OK; | |
516 | ||
517 | /* | |
518 | * Map the file and make the mapped buffer writable. | |
519 | * NOTE: Using writable=TRUE does _NOT_ mean that file that is mapped | |
520 | * will be modified. It will not be modified until someone uses | |
521 | * g_file_set_contents() on it. | |
522 | */ | |
523 | error = NULL; | |
524 | file = g_mapped_file_new(filename, TRUE, &error); | |
525 | g_assert_no_error(error); | |
526 | ||
527 | file_size = g_mapped_file_get_length(file); | |
528 | firmware = g_mapped_file_get_contents(file); | |
529 | g_assert(firmware); | |
530 | ||
531 | /* Weird magic transformation below, I have no idea what it does. */ | |
532 | imm = 0x3f6df2ab; | |
533 | for (i = 0; i < file_size; i++) { | |
534 | imm = (imm + 0xa853753) % 177 + (imm * 0x8034052); | |
535 | firmware[i] ^= imm & 0xff; | |
536 | } | |
537 | ||
538 | /* | |
539 | * Now that the firmware is "transformed", we will transcribe the | |
540 | * firmware blob into a sequence of toggles of the Dx wires. This | |
541 | * sequence will be fed directly into the Sigma, which must be in | |
542 | * the FPGA bitbang programming mode. | |
543 | */ | |
544 | ||
545 | /* Each bit of firmware is transcribed as two toggles of Dx wires. */ | |
546 | bb_size = file_size * 8 * 2; | |
547 | bb_stream = (uint8_t *)g_try_malloc(bb_size); | |
548 | if (!bb_stream) { | |
549 | sr_err("%s: Failed to allocate bitbang stream", __func__); | |
550 | ret = SR_ERR_MALLOC; | |
551 | goto exit; | |
552 | } | |
553 | ||
554 | bbs = bb_stream; | |
555 | for (i = 0; i < file_size; i++) { | |
556 | for (bit = 7; bit >= 0; bit--) { | |
557 | v = (firmware[i] & (1 << bit)) ? 0x40 : 0x00; | |
558 | *bbs++ = v | 0x01; | |
559 | *bbs++ = v; | |
560 | } | |
561 | } | |
562 | ||
563 | /* The transformation completed successfully, return the result. */ | |
564 | *bb_cmd = bb_stream; | |
565 | *bb_cmd_size = bb_size; | |
566 | ||
567 | exit: | |
568 | g_mapped_file_unref(file); | |
569 | return ret; | |
570 | } | |
571 | ||
0e1357e8 | 572 | static int upload_firmware(int firmware_idx, struct dev_context *devc) |
28a35d8a HE |
573 | { |
574 | int ret; | |
575 | unsigned char *buf; | |
576 | unsigned char pins; | |
577 | size_t buf_size; | |
499b17e9 | 578 | const char *firmware = sigma_firmware_files[firmware_idx]; |
8bbf7627 | 579 | struct ftdi_context *ftdic = &devc->ftdic; |
28a35d8a | 580 | |
fefa1800 | 581 | /* Make sure it's an ASIX SIGMA. */ |
8bbf7627 MV |
582 | ret = ftdi_usb_open_desc(ftdic, USB_VENDOR, USB_PRODUCT, |
583 | USB_DESCRIPTION, NULL); | |
584 | if (ret < 0) { | |
47f4f073 | 585 | sr_err("ftdi_usb_open failed: %s", |
8bbf7627 | 586 | ftdi_get_error_string(ftdic)); |
28a35d8a HE |
587 | return 0; |
588 | } | |
589 | ||
8bbf7627 MV |
590 | ret = ftdi_set_bitmode(ftdic, 0xdf, BITMODE_BITBANG); |
591 | if (ret < 0) { | |
47f4f073 | 592 | sr_err("ftdi_set_bitmode failed: %s", |
8bbf7627 | 593 | ftdi_get_error_string(ftdic)); |
28a35d8a HE |
594 | return 0; |
595 | } | |
596 | ||
fefa1800 | 597 | /* Four times the speed of sigmalogan - Works well. */ |
8bbf7627 MV |
598 | ret = ftdi_set_baudrate(ftdic, 750000); |
599 | if (ret < 0) { | |
47f4f073 | 600 | sr_err("ftdi_set_baudrate failed: %s", |
8bbf7627 | 601 | ftdi_get_error_string(ftdic)); |
28a35d8a HE |
602 | return 0; |
603 | } | |
604 | ||
d5fa188a MV |
605 | /* Initialize the FPGA for firmware upload. */ |
606 | ret = sigma_fpga_init_bitbang(devc); | |
607 | if (ret) | |
608 | return ret; | |
28a35d8a | 609 | |
9ddb2a12 | 610 | /* Prepare firmware. */ |
d485d443 | 611 | ret = sigma_fw_2_bitbang(firmware, &buf, &buf_size); |
8bbf7627 | 612 | if (ret != SR_OK) { |
47f4f073 | 613 | sr_err("An error occured while reading the firmware: %s", |
499b17e9 | 614 | firmware); |
b53738ba | 615 | return ret; |
28a35d8a HE |
616 | } |
617 | ||
fefa1800 | 618 | /* Upload firmare. */ |
499b17e9 | 619 | sr_info("Uploading firmware file '%s'.", firmware); |
0e1357e8 | 620 | sigma_write(buf, buf_size, devc); |
28a35d8a HE |
621 | |
622 | g_free(buf); | |
623 | ||
8bbf7627 MV |
624 | ret = ftdi_set_bitmode(ftdic, 0x00, BITMODE_RESET); |
625 | if (ret < 0) { | |
47f4f073 | 626 | sr_err("ftdi_set_bitmode failed: %s", |
8bbf7627 | 627 | ftdi_get_error_string(ftdic)); |
e46b8fb1 | 628 | return SR_ERR; |
28a35d8a HE |
629 | } |
630 | ||
8bbf7627 | 631 | ftdi_usb_purge_buffers(ftdic); |
28a35d8a | 632 | |
fefa1800 | 633 | /* Discard garbage. */ |
29b66a2e | 634 | while (sigma_read(&pins, 1, devc) == 1) |
28a35d8a HE |
635 | ; |
636 | ||
64fe661b MV |
637 | /* Initialize the FPGA for logic-analyzer mode. */ |
638 | ret = sigma_fpga_init_la(devc); | |
639 | if (ret != SR_OK) | |
640 | return ret; | |
28a35d8a | 641 | |
0e1357e8 | 642 | devc->cur_firmware = firmware_idx; |
f6564c8d | 643 | |
47f4f073 | 644 | sr_info("Firmware uploaded."); |
e3fff420 | 645 | |
e46b8fb1 | 646 | return SR_OK; |
f6564c8d HE |
647 | } |
648 | ||
6078d2c9 | 649 | static int dev_open(struct sr_dev_inst *sdi) |
f6564c8d | 650 | { |
0e1357e8 | 651 | struct dev_context *devc; |
f6564c8d HE |
652 | int ret; |
653 | ||
0e1357e8 | 654 | devc = sdi->priv; |
99965709 | 655 | |
9ddb2a12 | 656 | /* Make sure it's an ASIX SIGMA. */ |
0e1357e8 | 657 | if ((ret = ftdi_usb_open_desc(&devc->ftdic, |
f6564c8d HE |
658 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { |
659 | ||
47f4f073 | 660 | sr_err("ftdi_usb_open failed: %s", |
0e1357e8 | 661 | ftdi_get_error_string(&devc->ftdic)); |
f6564c8d HE |
662 | |
663 | return 0; | |
664 | } | |
28a35d8a | 665 | |
5a2326a7 | 666 | sdi->status = SR_ST_ACTIVE; |
28a35d8a | 667 | |
e46b8fb1 | 668 | return SR_OK; |
f6564c8d HE |
669 | } |
670 | ||
6f4b1868 | 671 | static int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) |
f6564c8d | 672 | { |
2c9c0df8 BV |
673 | struct dev_context *devc; |
674 | unsigned int i; | |
675 | int ret; | |
f6564c8d | 676 | |
2c9c0df8 | 677 | devc = sdi->priv; |
f4abaa9f UH |
678 | ret = SR_OK; |
679 | ||
2c9c0df8 BV |
680 | for (i = 0; i < ARRAY_SIZE(samplerates); i++) { |
681 | if (samplerates[i] == samplerate) | |
f6564c8d HE |
682 | break; |
683 | } | |
2c9c0df8 | 684 | if (samplerates[i] == 0) |
e46b8fb1 | 685 | return SR_ERR_SAMPLERATE; |
f6564c8d | 686 | |
59df0c77 | 687 | if (samplerate <= SR_MHZ(50)) { |
0e1357e8 | 688 | ret = upload_firmware(0, devc); |
ba7dd8bb | 689 | devc->num_channels = 16; |
6b2d3385 | 690 | } else if (samplerate == SR_MHZ(100)) { |
0e1357e8 | 691 | ret = upload_firmware(1, devc); |
ba7dd8bb | 692 | devc->num_channels = 8; |
6b2d3385 | 693 | } else if (samplerate == SR_MHZ(200)) { |
0e1357e8 | 694 | ret = upload_firmware(2, devc); |
ba7dd8bb | 695 | devc->num_channels = 4; |
f78898e9 | 696 | } |
f6564c8d | 697 | |
6b2d3385 BV |
698 | if (ret == SR_OK) { |
699 | devc->cur_samplerate = samplerate; | |
700 | devc->period_ps = 1000000000000ULL / samplerate; | |
701 | devc->samples_per_event = 16 / devc->num_channels; | |
702 | devc->state.state = SIGMA_IDLE; | |
703 | } | |
f6564c8d | 704 | |
e8397563 | 705 | return ret; |
28a35d8a HE |
706 | } |
707 | ||
c53d793f HE |
708 | /* |
709 | * In 100 and 200 MHz mode, only a single pin rising/falling can be | |
710 | * set as trigger. In other modes, two rising/falling triggers can be set, | |
ba7dd8bb | 711 | * in addition to value/mask trigger for any number of channels. |
c53d793f HE |
712 | * |
713 | * The Sigma supports complex triggers using boolean expressions, but this | |
714 | * has not been implemented yet. | |
715 | */ | |
39c64c6a | 716 | static int convert_trigger(const struct sr_dev_inst *sdi) |
57bbf56b | 717 | { |
39c64c6a BV |
718 | struct dev_context *devc; |
719 | struct sr_trigger *trigger; | |
720 | struct sr_trigger_stage *stage; | |
721 | struct sr_trigger_match *match; | |
722 | const GSList *l, *m; | |
723 | int channelbit, trigger_set; | |
57bbf56b | 724 | |
39c64c6a | 725 | devc = sdi->priv; |
0e1357e8 | 726 | memset(&devc->trigger, 0, sizeof(struct sigma_trigger)); |
0812c40e | 727 | if (!(trigger = sr_session_trigger_get(sdi->session))) |
39c64c6a BV |
728 | return SR_OK; |
729 | ||
730 | trigger_set = 0; | |
731 | for (l = trigger->stages; l; l = l->next) { | |
732 | stage = l->data; | |
733 | for (m = stage->matches; m; m = m->next) { | |
734 | match = m->data; | |
735 | if (!match->channel->enabled) | |
736 | /* Ignore disabled channels with a trigger. */ | |
737 | continue; | |
738 | channelbit = 1 << (match->channel->index); | |
739 | if (devc->cur_samplerate >= SR_MHZ(100)) { | |
740 | /* Fast trigger support. */ | |
741 | if (trigger_set) { | |
742 | sr_err("Only a single pin trigger is " | |
743 | "supported in 100 and 200MHz mode."); | |
744 | return SR_ERR; | |
745 | } | |
746 | if (match->match == SR_TRIGGER_FALLING) | |
747 | devc->trigger.fallingmask |= channelbit; | |
748 | else if (match->match == SR_TRIGGER_RISING) | |
749 | devc->trigger.risingmask |= channelbit; | |
750 | else { | |
751 | sr_err("Only rising/falling trigger is " | |
752 | "supported in 100 and 200MHz mode."); | |
753 | return SR_ERR; | |
754 | } | |
eec5275e | 755 | |
c53d793f | 756 | ++trigger_set; |
39c64c6a BV |
757 | } else { |
758 | /* Simple trigger support (event). */ | |
759 | if (match->match == SR_TRIGGER_ONE) { | |
760 | devc->trigger.simplevalue |= channelbit; | |
761 | devc->trigger.simplemask |= channelbit; | |
762 | } | |
763 | else if (match->match == SR_TRIGGER_ZERO) { | |
764 | devc->trigger.simplevalue &= ~channelbit; | |
765 | devc->trigger.simplemask |= channelbit; | |
766 | } | |
767 | else if (match->match == SR_TRIGGER_FALLING) { | |
768 | devc->trigger.fallingmask |= channelbit; | |
769 | ++trigger_set; | |
770 | } | |
771 | else if (match->match == SR_TRIGGER_RISING) { | |
772 | devc->trigger.risingmask |= channelbit; | |
773 | ++trigger_set; | |
774 | } | |
775 | ||
776 | /* | |
777 | * Actually, Sigma supports 2 rising/falling triggers, | |
778 | * but they are ORed and the current trigger syntax | |
779 | * does not permit ORed triggers. | |
780 | */ | |
781 | if (trigger_set > 1) { | |
782 | sr_err("Only 1 rising/falling trigger " | |
783 | "is supported."); | |
784 | return SR_ERR; | |
785 | } | |
ee492173 | 786 | } |
ee492173 | 787 | } |
57bbf56b HE |
788 | } |
789 | ||
39c64c6a | 790 | |
e46b8fb1 | 791 | return SR_OK; |
57bbf56b HE |
792 | } |
793 | ||
6078d2c9 | 794 | static int dev_close(struct sr_dev_inst *sdi) |
28a35d8a | 795 | { |
0e1357e8 | 796 | struct dev_context *devc; |
28a35d8a | 797 | |
961009b0 | 798 | devc = sdi->priv; |
697785d1 UH |
799 | |
800 | /* TODO */ | |
801 | if (sdi->status == SR_ST_ACTIVE) | |
0e1357e8 | 802 | ftdi_usb_close(&devc->ftdic); |
697785d1 UH |
803 | |
804 | sdi->status = SR_ST_INACTIVE; | |
805 | ||
806 | return SR_OK; | |
28a35d8a HE |
807 | } |
808 | ||
6078d2c9 | 809 | static int cleanup(void) |
28a35d8a | 810 | { |
3b412e3a | 811 | return dev_clear(); |
28a35d8a HE |
812 | } |
813 | ||
584560f1 | 814 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 815 | const struct sr_channel_group *cg) |
28a35d8a | 816 | { |
0e1357e8 | 817 | struct dev_context *devc; |
99965709 | 818 | |
53b4680f | 819 | (void)cg; |
8f996b89 | 820 | |
fb2e6de7 BV |
821 | if (!sdi) |
822 | return SR_ERR; | |
823 | devc = sdi->priv; | |
824 | ||
584560f1 | 825 | switch (key) { |
123e1313 | 826 | case SR_CONF_SAMPLERATE: |
fb2e6de7 BV |
827 | *data = g_variant_new_uint64(devc->cur_samplerate); |
828 | break; | |
829 | case SR_CONF_LIMIT_MSEC: | |
830 | *data = g_variant_new_uint64(devc->limit_msec); | |
831 | break; | |
832 | case SR_CONF_CAPTURE_RATIO: | |
833 | *data = g_variant_new_uint64(devc->capture_ratio); | |
28a35d8a | 834 | break; |
d7bbecfd | 835 | default: |
bd6fbf62 | 836 | return SR_ERR_NA; |
28a35d8a HE |
837 | } |
838 | ||
41479605 | 839 | return SR_OK; |
28a35d8a HE |
840 | } |
841 | ||
584560f1 | 842 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 843 | const struct sr_channel_group *cg) |
28a35d8a | 844 | { |
0e1357e8 | 845 | struct dev_context *devc; |
6b2d3385 BV |
846 | uint64_t tmp; |
847 | int ret; | |
f6564c8d | 848 | |
53b4680f | 849 | (void)cg; |
8f996b89 | 850 | |
e73ffd42 BV |
851 | if (sdi->status != SR_ST_ACTIVE) |
852 | return SR_ERR_DEV_CLOSED; | |
853 | ||
0e1357e8 | 854 | devc = sdi->priv; |
99965709 | 855 | |
6b2d3385 | 856 | ret = SR_OK; |
584560f1 | 857 | switch (key) { |
6868626b | 858 | case SR_CONF_SAMPLERATE: |
2c9c0df8 | 859 | ret = set_samplerate(sdi, g_variant_get_uint64(data)); |
6868626b BV |
860 | break; |
861 | case SR_CONF_LIMIT_MSEC: | |
6b2d3385 BV |
862 | tmp = g_variant_get_uint64(data); |
863 | if (tmp > 0) | |
864 | devc->limit_msec = g_variant_get_uint64(data); | |
94ba4bd6 | 865 | else |
e46b8fb1 | 866 | ret = SR_ERR; |
6868626b BV |
867 | break; |
868 | case SR_CONF_LIMIT_SAMPLES: | |
6b2d3385 BV |
869 | tmp = g_variant_get_uint64(data); |
870 | devc->limit_msec = tmp * 1000 / devc->cur_samplerate; | |
6868626b BV |
871 | break; |
872 | case SR_CONF_CAPTURE_RATIO: | |
6b2d3385 BV |
873 | tmp = g_variant_get_uint64(data); |
874 | if (tmp <= 100) | |
875 | devc->capture_ratio = tmp; | |
94ba4bd6 | 876 | else |
6b2d3385 | 877 | ret = SR_ERR; |
6868626b BV |
878 | break; |
879 | default: | |
bd6fbf62 | 880 | ret = SR_ERR_NA; |
28a35d8a HE |
881 | } |
882 | ||
883 | return ret; | |
884 | } | |
885 | ||
584560f1 | 886 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 887 | const struct sr_channel_group *cg) |
a1c743fc | 888 | { |
2c9c0df8 BV |
889 | GVariant *gvar; |
890 | GVariantBuilder gvb; | |
a1c743fc BV |
891 | |
892 | (void)sdi; | |
53b4680f | 893 | (void)cg; |
a1c743fc BV |
894 | |
895 | switch (key) { | |
9a6517d1 | 896 | case SR_CONF_DEVICE_OPTIONS: |
e7ba5a99 BV |
897 | if (!sdi) |
898 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
2ff11e50 | 899 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); |
e7ba5a99 BV |
900 | else |
901 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
2ff11e50 | 902 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 | 903 | break; |
a1c743fc | 904 | case SR_CONF_SAMPLERATE: |
2c9c0df8 BV |
905 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
906 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
907 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
908 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
909 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 910 | break; |
39c64c6a | 911 | case SR_CONF_TRIGGER_MATCH: |
af945a66 | 912 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
39c64c6a BV |
913 | trigger_matches, ARRAY_SIZE(trigger_matches), |
914 | sizeof(int32_t)); | |
c50277a6 | 915 | break; |
a1c743fc | 916 | default: |
bd6fbf62 | 917 | return SR_ERR_NA; |
a1c743fc BV |
918 | } |
919 | ||
920 | return SR_OK; | |
921 | } | |
922 | ||
36b1c8e6 | 923 | /* Software trigger to determine exact trigger position. */ |
5fc01191 | 924 | static int get_trigger_offset(uint8_t *samples, uint16_t last_sample, |
36b1c8e6 HE |
925 | struct sigma_trigger *t) |
926 | { | |
927 | int i; | |
5fc01191 | 928 | uint16_t sample = 0; |
36b1c8e6 HE |
929 | |
930 | for (i = 0; i < 8; ++i) { | |
931 | if (i > 0) | |
5fc01191 MV |
932 | last_sample = sample; |
933 | sample = samples[2 * i] | (samples[2 * i + 1] << 8); | |
36b1c8e6 HE |
934 | |
935 | /* Simple triggers. */ | |
5fc01191 | 936 | if ((sample & t->simplemask) != t->simplevalue) |
36b1c8e6 HE |
937 | continue; |
938 | ||
939 | /* Rising edge. */ | |
5fc01191 MV |
940 | if (((last_sample & t->risingmask) != 0) || |
941 | ((sample & t->risingmask) != t->risingmask)) | |
36b1c8e6 HE |
942 | continue; |
943 | ||
944 | /* Falling edge. */ | |
bdfc7a89 | 945 | if ((last_sample & t->fallingmask) != t->fallingmask || |
5fc01191 | 946 | (sample & t->fallingmask) != 0) |
36b1c8e6 HE |
947 | continue; |
948 | ||
949 | break; | |
950 | } | |
951 | ||
952 | /* If we did not match, return original trigger pos. */ | |
953 | return i & 0x7; | |
954 | } | |
955 | ||
3513d965 MV |
956 | |
957 | /* | |
958 | * Return the timestamp of "DRAM cluster". | |
959 | */ | |
960 | static uint16_t sigma_dram_cluster_ts(struct sigma_dram_cluster *cluster) | |
961 | { | |
962 | return (cluster->timestamp_hi << 8) | cluster->timestamp_lo; | |
963 | } | |
964 | ||
23239b5c MV |
965 | static void sigma_decode_dram_cluster(struct sigma_dram_cluster *dram_cluster, |
966 | unsigned int events_in_cluster, | |
1e23158b | 967 | unsigned int triggered, |
23239b5c MV |
968 | struct sr_dev_inst *sdi) |
969 | { | |
970 | struct dev_context *devc = sdi->priv; | |
971 | struct sigma_state *ss = &devc->state; | |
972 | struct sr_datafeed_packet packet; | |
973 | struct sr_datafeed_logic logic; | |
974 | uint16_t tsdiff, ts; | |
975 | uint8_t samples[2048]; | |
976 | unsigned int i; | |
977 | ||
23239b5c MV |
978 | ts = sigma_dram_cluster_ts(dram_cluster); |
979 | tsdiff = ts - ss->lastts; | |
980 | ss->lastts = ts; | |
981 | ||
982 | packet.type = SR_DF_LOGIC; | |
983 | packet.payload = &logic; | |
984 | logic.unitsize = 2; | |
985 | logic.data = samples; | |
986 | ||
987 | /* | |
988 | * First of all, send Sigrok a copy of the last sample from | |
989 | * previous cluster as many times as needed to make up for | |
990 | * the differential characteristics of data we get from the | |
991 | * Sigma. Sigrok needs one sample of data per period. | |
992 | * | |
993 | * One DRAM cluster contains a timestamp and seven samples, | |
994 | * the units of timestamp are "devc->period_ps" , the first | |
995 | * sample in the cluster happens at the time of the timestamp | |
996 | * and the remaining samples happen at timestamp +1...+6 . | |
997 | */ | |
998 | for (ts = 0; ts < tsdiff - (EVENTS_PER_CLUSTER - 1); ts++) { | |
999 | i = ts % 1024; | |
1000 | samples[2 * i + 0] = ss->lastsample & 0xff; | |
1001 | samples[2 * i + 1] = ss->lastsample >> 8; | |
1002 | ||
1003 | /* | |
1004 | * If we have 1024 samples ready or we're at the | |
1005 | * end of submitting the padding samples, submit | |
1006 | * the packet to Sigrok. | |
1007 | */ | |
1008 | if ((i == 1023) || (ts == (tsdiff - EVENTS_PER_CLUSTER))) { | |
1009 | logic.length = (i + 1) * logic.unitsize; | |
102f1239 | 1010 | sr_session_send(sdi, &packet); |
23239b5c MV |
1011 | } |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * Parse the samples in current cluster and prepare them | |
1016 | * to be submitted to Sigrok. | |
1017 | */ | |
1018 | for (i = 0; i < events_in_cluster; i++) { | |
1019 | samples[2 * i + 1] = dram_cluster->samples[i].sample_lo; | |
1020 | samples[2 * i + 0] = dram_cluster->samples[i].sample_hi; | |
1021 | } | |
1022 | ||
1023 | /* Send data up to trigger point (if triggered). */ | |
1024 | int trigger_offset = 0; | |
1e23158b | 1025 | if (triggered) { |
23239b5c MV |
1026 | /* |
1027 | * Trigger is not always accurate to sample because of | |
1028 | * pipeline delay. However, it always triggers before | |
1029 | * the actual event. We therefore look at the next | |
1030 | * samples to pinpoint the exact position of the trigger. | |
1031 | */ | |
1032 | trigger_offset = get_trigger_offset(samples, | |
1033 | ss->lastsample, &devc->trigger); | |
1034 | ||
1035 | if (trigger_offset > 0) { | |
1036 | packet.type = SR_DF_LOGIC; | |
1037 | logic.length = trigger_offset * logic.unitsize; | |
102f1239 | 1038 | sr_session_send(sdi, &packet); |
23239b5c MV |
1039 | events_in_cluster -= trigger_offset; |
1040 | } | |
1041 | ||
1042 | /* Only send trigger if explicitly enabled. */ | |
1043 | if (devc->use_triggers) { | |
1044 | packet.type = SR_DF_TRIGGER; | |
102f1239 | 1045 | sr_session_send(sdi, &packet); |
23239b5c MV |
1046 | } |
1047 | } | |
1048 | ||
1049 | if (events_in_cluster > 0) { | |
1050 | packet.type = SR_DF_LOGIC; | |
1051 | logic.length = events_in_cluster * logic.unitsize; | |
1052 | logic.data = samples + (trigger_offset * logic.unitsize); | |
102f1239 | 1053 | sr_session_send(sdi, &packet); |
23239b5c MV |
1054 | } |
1055 | ||
1056 | ss->lastsample = | |
1057 | samples[2 * (events_in_cluster - 1) + 0] | | |
1058 | (samples[2 * (events_in_cluster - 1) + 1] << 8); | |
1059 | ||
1060 | } | |
1061 | ||
28a35d8a | 1062 | /* |
fefa1800 UH |
1063 | * Decode chunk of 1024 bytes, 64 clusters, 7 events per cluster. |
1064 | * Each event is 20ns apart, and can contain multiple samples. | |
f78898e9 HE |
1065 | * |
1066 | * For 200 MHz, events contain 4 samples for each channel, spread 5 ns apart. | |
1067 | * For 100 MHz, events contain 2 samples for each channel, spread 10 ns apart. | |
1068 | * For 50 MHz and below, events contain one sample for each channel, | |
1069 | * spread 20 ns apart. | |
28a35d8a | 1070 | */ |
1e23158b MV |
1071 | static int decode_chunk_ts(struct sigma_dram_line *dram_line, |
1072 | uint16_t events_in_line, | |
1073 | uint32_t trigger_event, | |
102f1239 | 1074 | struct sr_dev_inst *sdi) |
28a35d8a | 1075 | { |
3628074d | 1076 | struct sigma_dram_cluster *dram_cluster; |
0e1357e8 | 1077 | struct dev_context *devc = sdi->priv; |
5fc01191 MV |
1078 | unsigned int clusters_in_line = |
1079 | (events_in_line + (EVENTS_PER_CLUSTER - 1)) / EVENTS_PER_CLUSTER; | |
1080 | unsigned int events_in_cluster; | |
23239b5c | 1081 | unsigned int i; |
1e23158b | 1082 | uint32_t trigger_cluster = ~0, triggered = 0; |
ee492173 | 1083 | |
4ae1f451 | 1084 | /* Check if trigger is in this chunk. */ |
1e23158b MV |
1085 | if (trigger_event < (64 * 7)) { |
1086 | if (devc->cur_samplerate <= SR_MHZ(50)) { | |
1087 | trigger_event -= MIN(EVENTS_PER_CLUSTER - 1, | |
1088 | trigger_event); | |
1089 | } | |
57bbf56b | 1090 | |
ee492173 | 1091 | /* Find in which cluster the trigger occured. */ |
1e23158b | 1092 | trigger_cluster = trigger_event / EVENTS_PER_CLUSTER; |
ee492173 | 1093 | } |
28a35d8a | 1094 | |
5fc01191 MV |
1095 | /* For each full DRAM cluster. */ |
1096 | for (i = 0; i < clusters_in_line; i++) { | |
3628074d | 1097 | dram_cluster = &dram_line->cluster[i]; |
5fc01191 | 1098 | |
5fc01191 | 1099 | /* The last cluster might not be full. */ |
23239b5c MV |
1100 | if ((i == clusters_in_line - 1) && |
1101 | (events_in_line % EVENTS_PER_CLUSTER)) { | |
5fc01191 | 1102 | events_in_cluster = events_in_line % EVENTS_PER_CLUSTER; |
23239b5c | 1103 | } else { |
5fc01191 | 1104 | events_in_cluster = EVENTS_PER_CLUSTER; |
abda62ce | 1105 | } |
ee492173 | 1106 | |
1e23158b MV |
1107 | triggered = (i == trigger_cluster); |
1108 | sigma_decode_dram_cluster(dram_cluster, events_in_cluster, | |
1109 | triggered, sdi); | |
28a35d8a HE |
1110 | } |
1111 | ||
e46b8fb1 | 1112 | return SR_OK; |
28a35d8a HE |
1113 | } |
1114 | ||
6057d9fa | 1115 | static int download_capture(struct sr_dev_inst *sdi) |
28a35d8a | 1116 | { |
6057d9fa | 1117 | struct dev_context *devc = sdi->priv; |
e15e5873 | 1118 | const uint32_t chunks_per_read = 32; |
fd830beb | 1119 | struct sigma_dram_line *dram_line; |
c6648b66 | 1120 | int bufsz; |
462fe786 | 1121 | uint32_t stoppos, triggerpos; |
6057d9fa MV |
1122 | struct sr_datafeed_packet packet; |
1123 | uint8_t modestatus; | |
1124 | ||
c6648b66 MV |
1125 | uint32_t i; |
1126 | uint32_t dl_lines_total, dl_lines_curr, dl_lines_done; | |
46641fac | 1127 | uint32_t dl_events_in_line = 64 * 7; |
1e23158b | 1128 | uint32_t trg_line = ~0, trg_event = ~0; |
c6648b66 | 1129 | |
fd830beb MV |
1130 | dram_line = g_try_malloc0(chunks_per_read * sizeof(*dram_line)); |
1131 | if (!dram_line) | |
1132 | return FALSE; | |
1133 | ||
6868626b BV |
1134 | sr_info("Downloading sample data."); |
1135 | ||
6057d9fa MV |
1136 | /* Stop acquisition. */ |
1137 | sigma_set_register(WRITE_MODE, 0x11, devc); | |
1138 | ||
1139 | /* Set SDRAM Read Enable. */ | |
1140 | sigma_set_register(WRITE_MODE, 0x02, devc); | |
1141 | ||
1142 | /* Get the current position. */ | |
462fe786 | 1143 | sigma_read_pos(&stoppos, &triggerpos, devc); |
6057d9fa MV |
1144 | |
1145 | /* Check if trigger has fired. */ | |
1146 | modestatus = sigma_get_register(READ_MODE, devc); | |
1e23158b | 1147 | if (modestatus & 0x20) { |
c6648b66 | 1148 | trg_line = triggerpos >> 9; |
1e23158b MV |
1149 | trg_event = triggerpos & 0x1ff; |
1150 | } | |
6057d9fa | 1151 | |
c6648b66 MV |
1152 | /* |
1153 | * Determine how many 1024b "DRAM lines" do we need to read from the | |
1154 | * Sigma so we have a complete set of samples. Note that the last | |
1155 | * line can be only partial, containing less than 64 clusters. | |
1156 | */ | |
1157 | dl_lines_total = (stoppos >> 9) + 1; | |
6868626b | 1158 | |
c6648b66 | 1159 | dl_lines_done = 0; |
6868626b | 1160 | |
c6648b66 MV |
1161 | while (dl_lines_total > dl_lines_done) { |
1162 | /* We can download only up-to 32 DRAM lines in one go! */ | |
1163 | dl_lines_curr = MIN(chunks_per_read, dl_lines_total); | |
6868626b | 1164 | |
f41a4cae MV |
1165 | bufsz = sigma_read_dram(dl_lines_done, dl_lines_curr, |
1166 | (uint8_t *)dram_line, devc); | |
c6648b66 MV |
1167 | /* TODO: Check bufsz. For now, just avoid compiler warnings. */ |
1168 | (void)bufsz; | |
6868626b | 1169 | |
c6648b66 MV |
1170 | /* This is the first DRAM line, so find the initial timestamp. */ |
1171 | if (dl_lines_done == 0) { | |
3513d965 MV |
1172 | devc->state.lastts = |
1173 | sigma_dram_cluster_ts(&dram_line[0].cluster[0]); | |
c6648b66 | 1174 | devc->state.lastsample = 0; |
6868626b BV |
1175 | } |
1176 | ||
c6648b66 | 1177 | for (i = 0; i < dl_lines_curr; i++) { |
1e23158b | 1178 | uint32_t trigger_event = ~0; |
c6648b66 MV |
1179 | /* The last "DRAM line" can be only partially full. */ |
1180 | if (dl_lines_done + i == dl_lines_total - 1) | |
46641fac | 1181 | dl_events_in_line = stoppos & 0x1ff; |
c6648b66 | 1182 | |
e69ad48e | 1183 | /* Test if the trigger happened on this line. */ |
c6648b66 | 1184 | if (dl_lines_done + i == trg_line) |
1e23158b | 1185 | trigger_event = trg_event; |
e69ad48e | 1186 | |
1e23158b MV |
1187 | decode_chunk_ts(dram_line + i, dl_events_in_line, |
1188 | trigger_event, sdi); | |
c6648b66 | 1189 | } |
6868626b | 1190 | |
c6648b66 | 1191 | dl_lines_done += dl_lines_curr; |
6868626b BV |
1192 | } |
1193 | ||
6057d9fa MV |
1194 | /* All done. */ |
1195 | packet.type = SR_DF_END; | |
1196 | sr_session_send(sdi, &packet); | |
1197 | ||
1198 | dev_acquisition_stop(sdi, sdi); | |
1199 | ||
fd830beb MV |
1200 | g_free(dram_line); |
1201 | ||
6057d9fa | 1202 | return TRUE; |
6868626b BV |
1203 | } |
1204 | ||
d4051930 MV |
1205 | /* |
1206 | * Handle the Sigma when in CAPTURE mode. This function checks: | |
1207 | * - Sampling time ended | |
1208 | * - DRAM capacity overflow | |
1209 | * This function triggers download of the samples from Sigma | |
1210 | * in case either of the above conditions is true. | |
1211 | */ | |
1212 | static int sigma_capture_mode(struct sr_dev_inst *sdi) | |
6868626b | 1213 | { |
d4051930 MV |
1214 | struct dev_context *devc = sdi->priv; |
1215 | ||
94ba4bd6 | 1216 | uint64_t running_msec; |
28a35d8a | 1217 | struct timeval tv; |
28a35d8a | 1218 | |
00c86508 | 1219 | uint32_t stoppos, triggerpos; |
28a35d8a | 1220 | |
00c86508 | 1221 | /* Check if the selected sampling duration passed. */ |
d4051930 MV |
1222 | gettimeofday(&tv, 0); |
1223 | running_msec = (tv.tv_sec - devc->start_tv.tv_sec) * 1000 + | |
00c86508 MV |
1224 | (tv.tv_usec - devc->start_tv.tv_usec) / 1000; |
1225 | if (running_msec >= devc->limit_msec) | |
6057d9fa | 1226 | return download_capture(sdi); |
00c86508 MV |
1227 | |
1228 | /* Get the position in DRAM to which the FPGA is writing now. */ | |
1229 | sigma_read_pos(&stoppos, &triggerpos, devc); | |
1230 | /* Test if DRAM is full and if so, download the data. */ | |
1231 | if ((stoppos >> 9) == 32767) | |
6057d9fa | 1232 | return download_capture(sdi); |
28a35d8a | 1233 | |
d4051930 MV |
1234 | return TRUE; |
1235 | } | |
28a35d8a | 1236 | |
d4051930 MV |
1237 | static int receive_data(int fd, int revents, void *cb_data) |
1238 | { | |
1239 | struct sr_dev_inst *sdi; | |
1240 | struct dev_context *devc; | |
88c51afe | 1241 | |
d4051930 MV |
1242 | (void)fd; |
1243 | (void)revents; | |
88c51afe | 1244 | |
d4051930 MV |
1245 | sdi = cb_data; |
1246 | devc = sdi->priv; | |
1247 | ||
1248 | if (devc->state.state == SIGMA_IDLE) | |
1249 | return TRUE; | |
1250 | ||
1251 | if (devc->state.state == SIGMA_CAPTURE) | |
1252 | return sigma_capture_mode(sdi); | |
28a35d8a | 1253 | |
28a35d8a HE |
1254 | return TRUE; |
1255 | } | |
1256 | ||
c53d793f HE |
1257 | /* Build a LUT entry used by the trigger functions. */ |
1258 | static void build_lut_entry(uint16_t value, uint16_t mask, uint16_t *entry) | |
ee492173 HE |
1259 | { |
1260 | int i, j, k, bit; | |
1261 | ||
ba7dd8bb | 1262 | /* For each quad channel. */ |
ee492173 | 1263 | for (i = 0; i < 4; ++i) { |
c53d793f | 1264 | entry[i] = 0xffff; |
ee492173 | 1265 | |
f758d074 | 1266 | /* For each bit in LUT. */ |
ee492173 HE |
1267 | for (j = 0; j < 16; ++j) |
1268 | ||
ba7dd8bb | 1269 | /* For each channel in quad. */ |
ee492173 HE |
1270 | for (k = 0; k < 4; ++k) { |
1271 | bit = 1 << (i * 4 + k); | |
1272 | ||
c53d793f HE |
1273 | /* Set bit in entry */ |
1274 | if ((mask & bit) && | |
1275 | ((!(value & bit)) != | |
4ae1f451 | 1276 | (!(j & (1 << k))))) |
c53d793f | 1277 | entry[i] &= ~(1 << j); |
ee492173 HE |
1278 | } |
1279 | } | |
c53d793f | 1280 | } |
ee492173 | 1281 | |
c53d793f HE |
1282 | /* Add a logical function to LUT mask. */ |
1283 | static void add_trigger_function(enum triggerop oper, enum triggerfunc func, | |
1284 | int index, int neg, uint16_t *mask) | |
1285 | { | |
1286 | int i, j; | |
1287 | int x[2][2], tmp, a, b, aset, bset, rset; | |
1288 | ||
1289 | memset(x, 0, 4 * sizeof(int)); | |
1290 | ||
1291 | /* Trigger detect condition. */ | |
1292 | switch (oper) { | |
1293 | case OP_LEVEL: | |
1294 | x[0][1] = 1; | |
1295 | x[1][1] = 1; | |
1296 | break; | |
1297 | case OP_NOT: | |
1298 | x[0][0] = 1; | |
1299 | x[1][0] = 1; | |
1300 | break; | |
1301 | case OP_RISE: | |
1302 | x[0][1] = 1; | |
1303 | break; | |
1304 | case OP_FALL: | |
1305 | x[1][0] = 1; | |
1306 | break; | |
1307 | case OP_RISEFALL: | |
1308 | x[0][1] = 1; | |
1309 | x[1][0] = 1; | |
1310 | break; | |
1311 | case OP_NOTRISE: | |
1312 | x[1][1] = 1; | |
1313 | x[0][0] = 1; | |
1314 | x[1][0] = 1; | |
1315 | break; | |
1316 | case OP_NOTFALL: | |
1317 | x[1][1] = 1; | |
1318 | x[0][0] = 1; | |
1319 | x[0][1] = 1; | |
1320 | break; | |
1321 | case OP_NOTRISEFALL: | |
1322 | x[1][1] = 1; | |
1323 | x[0][0] = 1; | |
1324 | break; | |
1325 | } | |
1326 | ||
1327 | /* Transpose if neg is set. */ | |
1328 | if (neg) { | |
ea9cfed7 | 1329 | for (i = 0; i < 2; ++i) { |
c53d793f HE |
1330 | for (j = 0; j < 2; ++j) { |
1331 | tmp = x[i][j]; | |
1332 | x[i][j] = x[1-i][1-j]; | |
1333 | x[1-i][1-j] = tmp; | |
1334 | } | |
ea9cfed7 | 1335 | } |
c53d793f HE |
1336 | } |
1337 | ||
1338 | /* Update mask with function. */ | |
1339 | for (i = 0; i < 16; ++i) { | |
1340 | a = (i >> (2 * index + 0)) & 1; | |
1341 | b = (i >> (2 * index + 1)) & 1; | |
1342 | ||
1343 | aset = (*mask >> i) & 1; | |
1344 | bset = x[b][a]; | |
1345 | ||
382cb19f | 1346 | rset = 0; |
c53d793f HE |
1347 | if (func == FUNC_AND || func == FUNC_NAND) |
1348 | rset = aset & bset; | |
1349 | else if (func == FUNC_OR || func == FUNC_NOR) | |
1350 | rset = aset | bset; | |
1351 | else if (func == FUNC_XOR || func == FUNC_NXOR) | |
1352 | rset = aset ^ bset; | |
1353 | ||
1354 | if (func == FUNC_NAND || func == FUNC_NOR || func == FUNC_NXOR) | |
1355 | rset = !rset; | |
1356 | ||
1357 | *mask &= ~(1 << i); | |
1358 | ||
1359 | if (rset) | |
1360 | *mask |= 1 << i; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | /* | |
1365 | * Build trigger LUTs used by 50 MHz and lower sample rates for supporting | |
1366 | * simple pin change and state triggers. Only two transitions (rise/fall) can be | |
1367 | * set at any time, but a full mask and value can be set (0/1). | |
1368 | */ | |
0e1357e8 | 1369 | static int build_basic_trigger(struct triggerlut *lut, struct dev_context *devc) |
c53d793f HE |
1370 | { |
1371 | int i,j; | |
4ae1f451 | 1372 | uint16_t masks[2] = { 0, 0 }; |
c53d793f HE |
1373 | |
1374 | memset(lut, 0, sizeof(struct triggerlut)); | |
1375 | ||
1376 | /* Contant for simple triggers. */ | |
1377 | lut->m4 = 0xa000; | |
1378 | ||
1379 | /* Value/mask trigger support. */ | |
0e1357e8 | 1380 | build_lut_entry(devc->trigger.simplevalue, devc->trigger.simplemask, |
99965709 | 1381 | lut->m2d); |
c53d793f HE |
1382 | |
1383 | /* Rise/fall trigger support. */ | |
1384 | for (i = 0, j = 0; i < 16; ++i) { | |
0e1357e8 BV |
1385 | if (devc->trigger.risingmask & (1 << i) || |
1386 | devc->trigger.fallingmask & (1 << i)) | |
c53d793f HE |
1387 | masks[j++] = 1 << i; |
1388 | } | |
1389 | ||
1390 | build_lut_entry(masks[0], masks[0], lut->m0d); | |
1391 | build_lut_entry(masks[1], masks[1], lut->m1d); | |
1392 | ||
1393 | /* Add glue logic */ | |
1394 | if (masks[0] || masks[1]) { | |
1395 | /* Transition trigger. */ | |
0e1357e8 | 1396 | if (masks[0] & devc->trigger.risingmask) |
c53d793f | 1397 | add_trigger_function(OP_RISE, FUNC_OR, 0, 0, &lut->m3); |
0e1357e8 | 1398 | if (masks[0] & devc->trigger.fallingmask) |
c53d793f | 1399 | add_trigger_function(OP_FALL, FUNC_OR, 0, 0, &lut->m3); |
0e1357e8 | 1400 | if (masks[1] & devc->trigger.risingmask) |
c53d793f | 1401 | add_trigger_function(OP_RISE, FUNC_OR, 1, 0, &lut->m3); |
0e1357e8 | 1402 | if (masks[1] & devc->trigger.fallingmask) |
c53d793f HE |
1403 | add_trigger_function(OP_FALL, FUNC_OR, 1, 0, &lut->m3); |
1404 | } else { | |
1405 | /* Only value/mask trigger. */ | |
1406 | lut->m3 = 0xffff; | |
1407 | } | |
ee492173 | 1408 | |
c53d793f | 1409 | /* Triggertype: event. */ |
ee492173 HE |
1410 | lut->params.selres = 3; |
1411 | ||
e46b8fb1 | 1412 | return SR_OK; |
ee492173 HE |
1413 | } |
1414 | ||
6078d2c9 | 1415 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
28a35d8a | 1416 | { |
0e1357e8 | 1417 | struct dev_context *devc; |
9ddb2a12 | 1418 | struct clockselect_50 clockselect; |
82957b65 | 1419 | int frac, triggerpin, ret; |
f4abaa9f | 1420 | uint8_t triggerselect = 0; |
57bbf56b | 1421 | struct triggerinout triggerinout_conf; |
ee492173 | 1422 | struct triggerlut lut; |
28a35d8a | 1423 | |
e73ffd42 BV |
1424 | if (sdi->status != SR_ST_ACTIVE) |
1425 | return SR_ERR_DEV_CLOSED; | |
1426 | ||
0e1357e8 | 1427 | devc = sdi->priv; |
28a35d8a | 1428 | |
39c64c6a BV |
1429 | if (convert_trigger(sdi) != SR_OK) { |
1430 | sr_err("Failed to configure triggers."); | |
014359e3 BV |
1431 | return SR_ERR; |
1432 | } | |
1433 | ||
ea9cfed7 | 1434 | /* If the samplerate has not been set, default to 200 kHz. */ |
0e1357e8 | 1435 | if (devc->cur_firmware == -1) { |
82957b65 UH |
1436 | if ((ret = set_samplerate(sdi, SR_KHZ(200))) != SR_OK) |
1437 | return ret; | |
1438 | } | |
e8397563 | 1439 | |
eec5275e | 1440 | /* Enter trigger programming mode. */ |
0e1357e8 | 1441 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc); |
28a35d8a | 1442 | |
eec5275e | 1443 | /* 100 and 200 MHz mode. */ |
0e1357e8 BV |
1444 | if (devc->cur_samplerate >= SR_MHZ(100)) { |
1445 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc); | |
57bbf56b | 1446 | |
a42aec7f HE |
1447 | /* Find which pin to trigger on from mask. */ |
1448 | for (triggerpin = 0; triggerpin < 8; ++triggerpin) | |
0e1357e8 | 1449 | if ((devc->trigger.risingmask | devc->trigger.fallingmask) & |
a42aec7f HE |
1450 | (1 << triggerpin)) |
1451 | break; | |
1452 | ||
1453 | /* Set trigger pin and light LED on trigger. */ | |
1454 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
1455 | ||
1456 | /* Default rising edge. */ | |
0e1357e8 | 1457 | if (devc->trigger.fallingmask) |
a42aec7f | 1458 | triggerselect |= 1 << 3; |
57bbf56b | 1459 | |
eec5275e | 1460 | /* All other modes. */ |
0e1357e8 BV |
1461 | } else if (devc->cur_samplerate <= SR_MHZ(50)) { |
1462 | build_basic_trigger(&lut, devc); | |
ee492173 | 1463 | |
0e1357e8 | 1464 | sigma_write_trigger_lut(&lut, devc); |
57bbf56b HE |
1465 | |
1466 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
1467 | } | |
1468 | ||
eec5275e | 1469 | /* Setup trigger in and out pins to default values. */ |
57bbf56b HE |
1470 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); |
1471 | triggerinout_conf.trgout_bytrigger = 1; | |
1472 | triggerinout_conf.trgout_enable = 1; | |
1473 | ||
28a35d8a | 1474 | sigma_write_register(WRITE_TRIGGER_OPTION, |
57bbf56b | 1475 | (uint8_t *) &triggerinout_conf, |
0e1357e8 | 1476 | sizeof(struct triggerinout), devc); |
28a35d8a | 1477 | |
eec5275e | 1478 | /* Go back to normal mode. */ |
0e1357e8 | 1479 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc); |
28a35d8a | 1480 | |
edca2c5c | 1481 | /* Set clock select register. */ |
0e1357e8 | 1482 | if (devc->cur_samplerate == SR_MHZ(200)) |
ba7dd8bb | 1483 | /* Enable 4 channels. */ |
0e1357e8 BV |
1484 | sigma_set_register(WRITE_CLOCK_SELECT, 0xf0, devc); |
1485 | else if (devc->cur_samplerate == SR_MHZ(100)) | |
ba7dd8bb | 1486 | /* Enable 8 channels. */ |
0e1357e8 | 1487 | sigma_set_register(WRITE_CLOCK_SELECT, 0x00, devc); |
edca2c5c HE |
1488 | else { |
1489 | /* | |
9ddb2a12 | 1490 | * 50 MHz mode (or fraction thereof). Any fraction down to |
eec5275e | 1491 | * 50 MHz / 256 can be used, but is not supported by sigrok API. |
edca2c5c | 1492 | */ |
0e1357e8 | 1493 | frac = SR_MHZ(50) / devc->cur_samplerate - 1; |
edca2c5c | 1494 | |
9ddb2a12 UH |
1495 | clockselect.async = 0; |
1496 | clockselect.fraction = frac; | |
ba7dd8bb | 1497 | clockselect.disabled_channels = 0; |
edca2c5c HE |
1498 | |
1499 | sigma_write_register(WRITE_CLOCK_SELECT, | |
9ddb2a12 | 1500 | (uint8_t *) &clockselect, |
0e1357e8 | 1501 | sizeof(clockselect), devc); |
edca2c5c HE |
1502 | } |
1503 | ||
fefa1800 | 1504 | /* Setup maximum post trigger time. */ |
99965709 | 1505 | sigma_set_register(WRITE_POST_TRIGGER, |
0e1357e8 | 1506 | (devc->capture_ratio * 255) / 100, devc); |
28a35d8a | 1507 | |
eec5275e | 1508 | /* Start acqusition. */ |
0e1357e8 BV |
1509 | gettimeofday(&devc->start_tv, 0); |
1510 | sigma_set_register(WRITE_MODE, 0x0d, devc); | |
99965709 | 1511 | |
3e9b7f9c | 1512 | devc->cb_data = cb_data; |
28a35d8a | 1513 | |
3c36c403 | 1514 | /* Send header packet to the session bus. */ |
102f1239 | 1515 | std_session_send_df_header(sdi, LOG_PREFIX); |
f366e86c | 1516 | |
f366e86c | 1517 | /* Add capture source. */ |
102f1239 | 1518 | sr_session_source_add(sdi->session, 0, G_IO_IN, 10, receive_data, (void *)sdi); |
f366e86c | 1519 | |
0e1357e8 | 1520 | devc->state.state = SIGMA_CAPTURE; |
6aac7737 | 1521 | |
e46b8fb1 | 1522 | return SR_OK; |
28a35d8a HE |
1523 | } |
1524 | ||
6078d2c9 | 1525 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
28a35d8a | 1526 | { |
0e1357e8 | 1527 | struct dev_context *devc; |
6aac7737 | 1528 | |
3cd3a20b | 1529 | (void)cb_data; |
28a35d8a | 1530 | |
6868626b BV |
1531 | devc = sdi->priv; |
1532 | devc->state.state = SIGMA_IDLE; | |
6aac7737 | 1533 | |
102f1239 | 1534 | sr_session_source_remove(sdi->session, 0); |
3010f21c UH |
1535 | |
1536 | return SR_OK; | |
28a35d8a HE |
1537 | } |
1538 | ||
c09f0b57 | 1539 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info = { |
e519ba86 | 1540 | .name = "asix-sigma", |
6352d030 | 1541 | .longname = "ASIX SIGMA/SIGMA2", |
e519ba86 | 1542 | .api_version = 1, |
6078d2c9 UH |
1543 | .init = init, |
1544 | .cleanup = cleanup, | |
1545 | .scan = scan, | |
1546 | .dev_list = dev_list, | |
3b412e3a | 1547 | .dev_clear = dev_clear, |
035a1078 BV |
1548 | .config_get = config_get, |
1549 | .config_set = config_set, | |
a1c743fc | 1550 | .config_list = config_list, |
6078d2c9 UH |
1551 | .dev_open = dev_open, |
1552 | .dev_close = dev_close, | |
1553 | .dev_acquisition_start = dev_acquisition_start, | |
1554 | .dev_acquisition_stop = dev_acquisition_stop, | |
0e1357e8 | 1555 | .priv = NULL, |
28a35d8a | 1556 | }; |