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Commit | Line | Data |
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28a35d8a HE |
1 | /* |
2 | * This file is part of the sigrok project. | |
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> | |
45c59c8b BV |
30 | #include "libsigrok.h" |
31 | #include "libsigrok-internal.h" | |
28a35d8a HE |
32 | #include "asix-sigma.h" |
33 | ||
34 | #define USB_VENDOR 0xa600 | |
35 | #define USB_PRODUCT 0xa000 | |
36 | #define USB_DESCRIPTION "ASIX SIGMA" | |
37 | #define USB_VENDOR_NAME "ASIX" | |
38 | #define USB_MODEL_NAME "SIGMA" | |
39 | #define USB_MODEL_VERSION "" | |
ee492173 | 40 | #define TRIGGER_TYPES "rf10" |
464d12c7 | 41 | #define NUM_PROBES 16 |
28a35d8a | 42 | |
ed300b9f BV |
43 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info; |
44 | static struct sr_dev_driver *adi = &asix_sigma_driver_info; | |
28a35d8a | 45 | |
a533743d | 46 | static const uint64_t supported_samplerates[] = { |
59df0c77 UH |
47 | SR_KHZ(200), |
48 | SR_KHZ(250), | |
49 | SR_KHZ(500), | |
50 | SR_MHZ(1), | |
51 | SR_MHZ(5), | |
52 | SR_MHZ(10), | |
53 | SR_MHZ(25), | |
54 | SR_MHZ(50), | |
55 | SR_MHZ(100), | |
56 | SR_MHZ(200), | |
28a35d8a HE |
57 | 0, |
58 | }; | |
59 | ||
d261dbbf UH |
60 | /* |
61 | * Probe numbers seem to go from 1-16, according to this image: | |
62 | * http://tools.asix.net/img/sigma_sigmacab_pins_720.jpg | |
63 | * (the cable has two additional GND pins, and a TI and TO pin) | |
64 | */ | |
c37d2b1b | 65 | static const char *probe_names[NUM_PROBES + 1] = { |
464d12c7 KS |
66 | "1", |
67 | "2", | |
68 | "3", | |
69 | "4", | |
70 | "5", | |
71 | "6", | |
72 | "7", | |
73 | "8", | |
74 | "9", | |
75 | "10", | |
76 | "11", | |
77 | "12", | |
78 | "13", | |
79 | "14", | |
80 | "15", | |
d261dbbf | 81 | "16", |
464d12c7 KS |
82 | NULL, |
83 | }; | |
84 | ||
a533743d | 85 | static const struct sr_samplerates samplerates = { |
590b9f9a UH |
86 | 0, |
87 | 0, | |
88 | 0, | |
28a35d8a HE |
89 | supported_samplerates, |
90 | }; | |
91 | ||
915f7cc8 | 92 | static const int hwcaps[] = { |
5a2326a7 UH |
93 | SR_HWCAP_LOGIC_ANALYZER, |
94 | SR_HWCAP_SAMPLERATE, | |
95 | SR_HWCAP_CAPTURE_RATIO, | |
28a35d8a | 96 | |
5a2326a7 | 97 | SR_HWCAP_LIMIT_MSEC, |
28a35d8a HE |
98 | 0, |
99 | }; | |
100 | ||
fefa1800 UH |
101 | /* Force the FPGA to reboot. */ |
102 | static uint8_t suicide[] = { | |
103 | 0x84, 0x84, 0x88, 0x84, 0x88, 0x84, 0x88, 0x84, | |
104 | }; | |
105 | ||
106 | /* Prepare to upload firmware (FPGA specific). */ | |
107 | static uint8_t init[] = { | |
108 | 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
109 | }; | |
110 | ||
111 | /* Initialize the logic analyzer mode. */ | |
112 | static uint8_t logic_mode_start[] = { | |
113 | 0x00, 0x40, 0x0f, 0x25, 0x35, 0x40, | |
114 | 0x2a, 0x3a, 0x40, 0x03, 0x20, 0x38, | |
115 | }; | |
116 | ||
eec5275e | 117 | static const char *firmware_files[] = { |
a8116d76 HE |
118 | "asix-sigma-50.fw", /* 50 MHz, supports 8 bit fractions */ |
119 | "asix-sigma-100.fw", /* 100 MHz */ | |
120 | "asix-sigma-200.fw", /* 200 MHz */ | |
ed09fd07 | 121 | "asix-sigma-50sync.fw", /* Synchronous clock from pin */ |
a8116d76 | 122 | "asix-sigma-phasor.fw", /* Frequency counter */ |
f6564c8d HE |
123 | }; |
124 | ||
3ffb6964 BV |
125 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
126 | void *cb_data); | |
6aac7737 | 127 | |
0e1357e8 | 128 | static int sigma_read(void *buf, size_t size, struct dev_context *devc) |
28a35d8a HE |
129 | { |
130 | int ret; | |
fefa1800 | 131 | |
0e1357e8 | 132 | ret = ftdi_read_data(&devc->ftdic, (unsigned char *)buf, size); |
28a35d8a | 133 | if (ret < 0) { |
7b48d6e1 | 134 | sr_err("sigma: ftdi_read_data failed: %s", |
0e1357e8 | 135 | ftdi_get_error_string(&devc->ftdic)); |
28a35d8a HE |
136 | } |
137 | ||
138 | return ret; | |
139 | } | |
140 | ||
0e1357e8 | 141 | static int sigma_write(void *buf, size_t size, struct dev_context *devc) |
28a35d8a HE |
142 | { |
143 | int ret; | |
fefa1800 | 144 | |
0e1357e8 | 145 | ret = ftdi_write_data(&devc->ftdic, (unsigned char *)buf, size); |
28a35d8a | 146 | if (ret < 0) { |
7b48d6e1 | 147 | sr_err("sigma: ftdi_write_data failed: %s", |
0e1357e8 | 148 | ftdi_get_error_string(&devc->ftdic)); |
fefa1800 | 149 | } else if ((size_t) ret != size) { |
0aeb0ccd | 150 | sr_err("sigma: ftdi_write_data did not complete write."); |
28a35d8a HE |
151 | } |
152 | ||
153 | return ret; | |
154 | } | |
155 | ||
99965709 | 156 | static int sigma_write_register(uint8_t reg, uint8_t *data, size_t len, |
0e1357e8 | 157 | struct dev_context *devc) |
28a35d8a HE |
158 | { |
159 | size_t i; | |
160 | uint8_t buf[len + 2]; | |
161 | int idx = 0; | |
162 | ||
163 | buf[idx++] = REG_ADDR_LOW | (reg & 0xf); | |
164 | buf[idx++] = REG_ADDR_HIGH | (reg >> 4); | |
165 | ||
fefa1800 | 166 | for (i = 0; i < len; ++i) { |
28a35d8a HE |
167 | buf[idx++] = REG_DATA_LOW | (data[i] & 0xf); |
168 | buf[idx++] = REG_DATA_HIGH_WRITE | (data[i] >> 4); | |
169 | } | |
170 | ||
0e1357e8 | 171 | return sigma_write(buf, idx, devc); |
28a35d8a HE |
172 | } |
173 | ||
0e1357e8 | 174 | static int sigma_set_register(uint8_t reg, uint8_t value, struct dev_context *devc) |
28a35d8a | 175 | { |
0e1357e8 | 176 | return sigma_write_register(reg, &value, 1, devc); |
28a35d8a HE |
177 | } |
178 | ||
99965709 | 179 | static int sigma_read_register(uint8_t reg, uint8_t *data, size_t len, |
0e1357e8 | 180 | struct dev_context *devc) |
28a35d8a HE |
181 | { |
182 | uint8_t buf[3]; | |
fefa1800 | 183 | |
28a35d8a HE |
184 | buf[0] = REG_ADDR_LOW | (reg & 0xf); |
185 | buf[1] = REG_ADDR_HIGH | (reg >> 4); | |
28a35d8a HE |
186 | buf[2] = REG_READ_ADDR; |
187 | ||
0e1357e8 | 188 | sigma_write(buf, sizeof(buf), devc); |
28a35d8a | 189 | |
0e1357e8 | 190 | return sigma_read(data, len, devc); |
28a35d8a HE |
191 | } |
192 | ||
0e1357e8 | 193 | static uint8_t sigma_get_register(uint8_t reg, struct dev_context *devc) |
28a35d8a HE |
194 | { |
195 | uint8_t value; | |
fefa1800 | 196 | |
0e1357e8 | 197 | if (1 != sigma_read_register(reg, &value, 1, devc)) { |
7b48d6e1 | 198 | sr_err("sigma: sigma_get_register: 1 byte expected"); |
28a35d8a HE |
199 | return 0; |
200 | } | |
201 | ||
202 | return value; | |
203 | } | |
204 | ||
99965709 | 205 | static int sigma_read_pos(uint32_t *stoppos, uint32_t *triggerpos, |
0e1357e8 | 206 | struct dev_context *devc) |
28a35d8a HE |
207 | { |
208 | uint8_t buf[] = { | |
209 | REG_ADDR_LOW | READ_TRIGGER_POS_LOW, | |
210 | ||
211 | REG_READ_ADDR | NEXT_REG, | |
212 | REG_READ_ADDR | NEXT_REG, | |
213 | REG_READ_ADDR | NEXT_REG, | |
214 | REG_READ_ADDR | NEXT_REG, | |
215 | REG_READ_ADDR | NEXT_REG, | |
216 | REG_READ_ADDR | NEXT_REG, | |
217 | }; | |
28a35d8a HE |
218 | uint8_t result[6]; |
219 | ||
0e1357e8 | 220 | sigma_write(buf, sizeof(buf), devc); |
28a35d8a | 221 | |
0e1357e8 | 222 | sigma_read(result, sizeof(result), devc); |
28a35d8a HE |
223 | |
224 | *triggerpos = result[0] | (result[1] << 8) | (result[2] << 16); | |
225 | *stoppos = result[3] | (result[4] << 8) | (result[5] << 16); | |
226 | ||
57bbf56b HE |
227 | /* Not really sure why this must be done, but according to spec. */ |
228 | if ((--*stoppos & 0x1ff) == 0x1ff) | |
229 | stoppos -= 64; | |
230 | ||
231 | if ((*--triggerpos & 0x1ff) == 0x1ff) | |
232 | triggerpos -= 64; | |
233 | ||
28a35d8a HE |
234 | return 1; |
235 | } | |
236 | ||
99965709 | 237 | static int sigma_read_dram(uint16_t startchunk, size_t numchunks, |
0e1357e8 | 238 | uint8_t *data, struct dev_context *devc) |
28a35d8a HE |
239 | { |
240 | size_t i; | |
241 | uint8_t buf[4096]; | |
242 | int idx = 0; | |
243 | ||
fefa1800 | 244 | /* Send the startchunk. Index start with 1. */ |
28a35d8a HE |
245 | buf[0] = startchunk >> 8; |
246 | buf[1] = startchunk & 0xff; | |
0e1357e8 | 247 | sigma_write_register(WRITE_MEMROW, buf, 2, devc); |
28a35d8a | 248 | |
fefa1800 | 249 | /* Read the DRAM. */ |
28a35d8a HE |
250 | buf[idx++] = REG_DRAM_BLOCK; |
251 | buf[idx++] = REG_DRAM_WAIT_ACK; | |
252 | ||
253 | for (i = 0; i < numchunks; ++i) { | |
fefa1800 UH |
254 | /* Alternate bit to copy from DRAM to cache. */ |
255 | if (i != (numchunks - 1)) | |
256 | buf[idx++] = REG_DRAM_BLOCK | (((i + 1) % 2) << 4); | |
28a35d8a HE |
257 | |
258 | buf[idx++] = REG_DRAM_BLOCK_DATA | ((i % 2) << 4); | |
259 | ||
fefa1800 | 260 | if (i != (numchunks - 1)) |
28a35d8a HE |
261 | buf[idx++] = REG_DRAM_WAIT_ACK; |
262 | } | |
263 | ||
0e1357e8 | 264 | sigma_write(buf, idx, devc); |
28a35d8a | 265 | |
0e1357e8 | 266 | return sigma_read(data, numchunks * CHUNK_SIZE, devc); |
28a35d8a HE |
267 | } |
268 | ||
4ae1f451 | 269 | /* Upload trigger look-up tables to Sigma. */ |
0e1357e8 | 270 | static int sigma_write_trigger_lut(struct triggerlut *lut, struct dev_context *devc) |
ee492173 HE |
271 | { |
272 | int i; | |
273 | uint8_t tmp[2]; | |
274 | uint16_t bit; | |
275 | ||
276 | /* Transpose the table and send to Sigma. */ | |
277 | for (i = 0; i < 16; ++i) { | |
278 | bit = 1 << i; | |
279 | ||
280 | tmp[0] = tmp[1] = 0; | |
281 | ||
282 | if (lut->m2d[0] & bit) | |
283 | tmp[0] |= 0x01; | |
284 | if (lut->m2d[1] & bit) | |
285 | tmp[0] |= 0x02; | |
286 | if (lut->m2d[2] & bit) | |
287 | tmp[0] |= 0x04; | |
288 | if (lut->m2d[3] & bit) | |
289 | tmp[0] |= 0x08; | |
290 | ||
291 | if (lut->m3 & bit) | |
292 | tmp[0] |= 0x10; | |
293 | if (lut->m3s & bit) | |
294 | tmp[0] |= 0x20; | |
295 | if (lut->m4 & bit) | |
296 | tmp[0] |= 0x40; | |
297 | ||
298 | if (lut->m0d[0] & bit) | |
299 | tmp[1] |= 0x01; | |
300 | if (lut->m0d[1] & bit) | |
301 | tmp[1] |= 0x02; | |
302 | if (lut->m0d[2] & bit) | |
303 | tmp[1] |= 0x04; | |
304 | if (lut->m0d[3] & bit) | |
305 | tmp[1] |= 0x08; | |
306 | ||
307 | if (lut->m1d[0] & bit) | |
308 | tmp[1] |= 0x10; | |
309 | if (lut->m1d[1] & bit) | |
310 | tmp[1] |= 0x20; | |
311 | if (lut->m1d[2] & bit) | |
312 | tmp[1] |= 0x40; | |
313 | if (lut->m1d[3] & bit) | |
314 | tmp[1] |= 0x80; | |
315 | ||
99965709 | 316 | sigma_write_register(WRITE_TRIGGER_SELECT0, tmp, sizeof(tmp), |
0e1357e8 BV |
317 | devc); |
318 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x30 | i, devc); | |
ee492173 HE |
319 | } |
320 | ||
321 | /* Send the parameters */ | |
322 | sigma_write_register(WRITE_TRIGGER_SELECT0, (uint8_t *) &lut->params, | |
0e1357e8 | 323 | sizeof(lut->params), devc); |
ee492173 | 324 | |
e46b8fb1 | 325 | return SR_OK; |
ee492173 HE |
326 | } |
327 | ||
fefa1800 | 328 | /* Generate the bitbang stream for programming the FPGA. */ |
28a35d8a | 329 | static int bin2bitbang(const char *filename, |
fefa1800 | 330 | unsigned char **buf, size_t *buf_size) |
28a35d8a | 331 | { |
fefa1800 | 332 | FILE *f; |
e3fff420 | 333 | unsigned long file_size; |
28a35d8a HE |
334 | unsigned long offset = 0; |
335 | unsigned char *p; | |
e3fff420 HE |
336 | uint8_t *firmware; |
337 | unsigned long fwsize = 0; | |
28a35d8a HE |
338 | const int buffer_size = 65536; |
339 | size_t i; | |
e3fff420 | 340 | int c, bit, v; |
fefa1800 | 341 | uint32_t imm = 0x3f6df2ab; |
28a35d8a | 342 | |
868d8cef | 343 | f = g_fopen(filename, "rb"); |
28a35d8a | 344 | if (!f) { |
7b48d6e1 | 345 | sr_err("sigma: g_fopen(\"%s\", \"rb\")", filename); |
b53738ba | 346 | return SR_ERR; |
28a35d8a HE |
347 | } |
348 | ||
349 | if (-1 == fseek(f, 0, SEEK_END)) { | |
7b48d6e1 | 350 | sr_err("sigma: fseek on %s failed", filename); |
28a35d8a | 351 | fclose(f); |
b53738ba | 352 | return SR_ERR; |
28a35d8a HE |
353 | } |
354 | ||
355 | file_size = ftell(f); | |
356 | ||
357 | fseek(f, 0, SEEK_SET); | |
358 | ||
b53738ba | 359 | if (!(firmware = g_try_malloc(buffer_size))) { |
340cfac0 | 360 | sr_err("sigma: %s: firmware malloc failed", __func__); |
12ad53f5 | 361 | fclose(f); |
b53738ba | 362 | return SR_ERR_MALLOC; |
28a35d8a HE |
363 | } |
364 | ||
28a35d8a HE |
365 | while ((c = getc(f)) != EOF) { |
366 | imm = (imm + 0xa853753) % 177 + (imm * 0x8034052); | |
e3fff420 | 367 | firmware[fwsize++] = c ^ imm; |
28a35d8a HE |
368 | } |
369 | fclose(f); | |
370 | ||
e3fff420 HE |
371 | if(fwsize != file_size) { |
372 | sr_err("sigma: %s: Error reading firmware", filename); | |
373 | fclose(f); | |
374 | g_free(firmware); | |
375 | return SR_ERR; | |
28a35d8a HE |
376 | } |
377 | ||
28a35d8a HE |
378 | *buf_size = fwsize * 2 * 8; |
379 | ||
b53738ba | 380 | *buf = p = (unsigned char *)g_try_malloc(*buf_size); |
28a35d8a | 381 | if (!p) { |
340cfac0 | 382 | sr_err("sigma: %s: buf/p malloc failed", __func__); |
12ad53f5 | 383 | g_free(firmware); |
b53738ba | 384 | return SR_ERR_MALLOC; |
28a35d8a HE |
385 | } |
386 | ||
387 | for (i = 0; i < fwsize; ++i) { | |
28a35d8a | 388 | for (bit = 7; bit >= 0; --bit) { |
fefa1800 | 389 | v = firmware[i] & 1 << bit ? 0x40 : 0x00; |
28a35d8a HE |
390 | p[offset++] = v | 0x01; |
391 | p[offset++] = v; | |
392 | } | |
393 | } | |
394 | ||
395 | g_free(firmware); | |
396 | ||
397 | if (offset != *buf_size) { | |
398 | g_free(*buf); | |
7b48d6e1 | 399 | sr_err("sigma: Error reading firmware %s " |
0aeb0ccd | 400 | "offset=%ld, file_size=%ld, buf_size=%zd.", |
133a37bf | 401 | filename, offset, file_size, *buf_size); |
28a35d8a | 402 | |
b53738ba | 403 | return SR_ERR; |
28a35d8a HE |
404 | } |
405 | ||
b53738ba | 406 | return SR_OK; |
28a35d8a HE |
407 | } |
408 | ||
0448d110 BV |
409 | static void clear_instances(void) |
410 | { | |
411 | GSList *l; | |
412 | struct sr_dev_inst *sdi; | |
0e1357e8 BV |
413 | struct drv_context *drvc; |
414 | struct dev_context *devc; | |
415 | ||
416 | drvc = adi->priv; | |
0448d110 BV |
417 | |
418 | /* Properly close all devices. */ | |
0e1357e8 | 419 | for (l = drvc->instances; l; l = l->next) { |
0448d110 BV |
420 | if (!(sdi = l->data)) { |
421 | /* Log error, but continue cleaning up the rest. */ | |
422 | sr_err("sigma: %s: sdi was NULL, continuing", __func__); | |
423 | continue; | |
424 | } | |
425 | if (sdi->priv) { | |
0e1357e8 BV |
426 | devc = sdi->priv; |
427 | ftdi_free(&devc->ftdic); | |
0448d110 BV |
428 | } |
429 | sr_dev_inst_free(sdi); | |
430 | } | |
0e1357e8 BV |
431 | g_slist_free(drvc->instances); |
432 | drvc->instances = NULL; | |
0448d110 BV |
433 | |
434 | } | |
435 | ||
40dda2c3 | 436 | static int hw_init(void) |
61136ea6 | 437 | { |
b32503cc | 438 | struct drv_context *drvc; |
61136ea6 | 439 | |
b32503cc BV |
440 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
441 | sr_err("asix-sigma: driver context malloc failed."); | |
442 | return SR_ERR; | |
443 | } | |
444 | adi->priv = drvc; | |
61136ea6 BV |
445 | |
446 | return SR_OK; | |
447 | } | |
448 | ||
0448d110 | 449 | static GSList *hw_scan(GSList *options) |
28a35d8a | 450 | { |
d68e2d1a | 451 | struct sr_dev_inst *sdi; |
87ca93c5 | 452 | struct sr_probe *probe; |
0e1357e8 BV |
453 | struct drv_context *drvc; |
454 | struct dev_context *devc; | |
0448d110 | 455 | GSList *devices; |
e3fff420 HE |
456 | struct ftdi_device_list *devlist; |
457 | char serial_txt[10]; | |
458 | uint32_t serial; | |
87ca93c5 | 459 | int ret, i; |
28a35d8a | 460 | |
0448d110 | 461 | (void)options; |
0e1357e8 | 462 | drvc = adi->priv; |
0448d110 BV |
463 | devices = NULL; |
464 | clear_instances(); | |
465 | ||
0e1357e8 BV |
466 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { |
467 | sr_err("sigma: %s: devc malloc failed", __func__); | |
0448d110 | 468 | return NULL; |
b53738ba | 469 | } |
99965709 | 470 | |
0e1357e8 | 471 | ftdi_init(&devc->ftdic); |
28a35d8a | 472 | |
fefa1800 | 473 | /* Look for SIGMAs. */ |
e3fff420 | 474 | |
0e1357e8 | 475 | if ((ret = ftdi_usb_find_all(&devc->ftdic, &devlist, |
eec944c5 BV |
476 | USB_VENDOR, USB_PRODUCT)) <= 0) { |
477 | if (ret < 0) | |
478 | sr_err("ftdi_usb_find_all(): %d", ret); | |
99965709 | 479 | goto free; |
eec944c5 | 480 | } |
99965709 | 481 | |
e3fff420 | 482 | /* Make sure it's a version 1 or 2 SIGMA. */ |
0e1357e8 | 483 | ftdi_usb_get_strings(&devc->ftdic, devlist->dev, NULL, 0, NULL, 0, |
6352d030 | 484 | serial_txt, sizeof(serial_txt)); |
e3fff420 HE |
485 | sscanf(serial_txt, "%x", &serial); |
486 | ||
6352d030 | 487 | if (serial < 0xa6010000 || serial > 0xa602ffff) { |
e3fff420 | 488 | sr_err("sigma: Only SIGMA and SIGMA2 are supported " |
6352d030 | 489 | "in this version of sigrok."); |
e3fff420 HE |
490 | goto free; |
491 | } | |
492 | ||
493 | sr_info("Found ASIX SIGMA - Serial: %s", serial_txt); | |
494 | ||
0e1357e8 BV |
495 | devc->cur_samplerate = 0; |
496 | devc->period_ps = 0; | |
497 | devc->limit_msec = 0; | |
498 | devc->cur_firmware = -1; | |
499 | devc->num_probes = 0; | |
500 | devc->samples_per_event = 0; | |
501 | devc->capture_ratio = 50; | |
502 | devc->use_triggers = 0; | |
28a35d8a | 503 | |
fefa1800 | 504 | /* Register SIGMA device. */ |
d68e2d1a UH |
505 | if (!(sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, USB_VENDOR_NAME, |
506 | USB_MODEL_NAME, USB_MODEL_VERSION))) { | |
507 | sr_err("sigma: %s: sdi was NULL", __func__); | |
99965709 | 508 | goto free; |
d68e2d1a | 509 | } |
d7bbecfd | 510 | sdi->driver = adi; |
87ca93c5 BV |
511 | |
512 | for (i = 0; probe_names[i]; i++) { | |
513 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
514 | probe_names[i]))) | |
515 | return NULL; | |
516 | sdi->probes = g_slist_append(sdi->probes, probe); | |
517 | } | |
518 | ||
0448d110 | 519 | devices = g_slist_append(devices, sdi); |
0e1357e8 BV |
520 | drvc->instances = g_slist_append(drvc->instances, sdi); |
521 | sdi->priv = devc; | |
28a35d8a | 522 | |
fefa1800 | 523 | /* We will open the device again when we need it. */ |
e3fff420 | 524 | ftdi_list_free(&devlist); |
28a35d8a | 525 | |
0448d110 | 526 | return devices; |
ea9cfed7 | 527 | |
99965709 | 528 | free: |
0e1357e8 BV |
529 | ftdi_deinit(&devc->ftdic); |
530 | g_free(devc); | |
0448d110 | 531 | return NULL; |
28a35d8a HE |
532 | } |
533 | ||
0e1357e8 | 534 | static int upload_firmware(int firmware_idx, struct dev_context *devc) |
28a35d8a HE |
535 | { |
536 | int ret; | |
537 | unsigned char *buf; | |
538 | unsigned char pins; | |
539 | size_t buf_size; | |
28a35d8a | 540 | unsigned char result[32]; |
e8397563 | 541 | char firmware_path[128]; |
28a35d8a | 542 | |
fefa1800 | 543 | /* Make sure it's an ASIX SIGMA. */ |
0e1357e8 | 544 | if ((ret = ftdi_usb_open_desc(&devc->ftdic, |
28a35d8a | 545 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { |
7b48d6e1 | 546 | sr_err("sigma: ftdi_usb_open failed: %s", |
0e1357e8 | 547 | ftdi_get_error_string(&devc->ftdic)); |
28a35d8a HE |
548 | return 0; |
549 | } | |
550 | ||
0e1357e8 | 551 | if ((ret = ftdi_set_bitmode(&devc->ftdic, 0xdf, BITMODE_BITBANG)) < 0) { |
7b48d6e1 | 552 | sr_err("sigma: ftdi_set_bitmode failed: %s", |
0e1357e8 | 553 | ftdi_get_error_string(&devc->ftdic)); |
28a35d8a HE |
554 | return 0; |
555 | } | |
556 | ||
fefa1800 | 557 | /* Four times the speed of sigmalogan - Works well. */ |
0e1357e8 | 558 | if ((ret = ftdi_set_baudrate(&devc->ftdic, 750000)) < 0) { |
7b48d6e1 | 559 | sr_err("sigma: ftdi_set_baudrate failed: %s", |
0e1357e8 | 560 | ftdi_get_error_string(&devc->ftdic)); |
28a35d8a HE |
561 | return 0; |
562 | } | |
563 | ||
fefa1800 | 564 | /* Force the FPGA to reboot. */ |
0e1357e8 BV |
565 | sigma_write(suicide, sizeof(suicide), devc); |
566 | sigma_write(suicide, sizeof(suicide), devc); | |
567 | sigma_write(suicide, sizeof(suicide), devc); | |
568 | sigma_write(suicide, sizeof(suicide), devc); | |
28a35d8a | 569 | |
fefa1800 | 570 | /* Prepare to upload firmware (FPGA specific). */ |
0e1357e8 | 571 | sigma_write(init, sizeof(init), devc); |
28a35d8a | 572 | |
0e1357e8 | 573 | ftdi_usb_purge_buffers(&devc->ftdic); |
28a35d8a | 574 | |
fefa1800 | 575 | /* Wait until the FPGA asserts INIT_B. */ |
28a35d8a | 576 | while (1) { |
0e1357e8 | 577 | ret = sigma_read(result, 1, devc); |
28a35d8a HE |
578 | if (result[0] & 0x20) |
579 | break; | |
580 | } | |
581 | ||
9ddb2a12 | 582 | /* Prepare firmware. */ |
e8397563 | 583 | snprintf(firmware_path, sizeof(firmware_path), "%s/%s", FIRMWARE_DIR, |
f6564c8d HE |
584 | firmware_files[firmware_idx]); |
585 | ||
b53738ba | 586 | if ((ret = bin2bitbang(firmware_path, &buf, &buf_size)) != SR_OK) { |
7b48d6e1 | 587 | sr_err("sigma: An error occured while reading the firmware: %s", |
133a37bf | 588 | firmware_path); |
b53738ba | 589 | return ret; |
28a35d8a HE |
590 | } |
591 | ||
fefa1800 | 592 | /* Upload firmare. */ |
e3fff420 | 593 | sr_info("sigma: Uploading firmware %s", firmware_files[firmware_idx]); |
0e1357e8 | 594 | sigma_write(buf, buf_size, devc); |
28a35d8a HE |
595 | |
596 | g_free(buf); | |
597 | ||
0e1357e8 | 598 | if ((ret = ftdi_set_bitmode(&devc->ftdic, 0x00, BITMODE_RESET)) < 0) { |
7b48d6e1 | 599 | sr_err("sigma: ftdi_set_bitmode failed: %s", |
0e1357e8 | 600 | ftdi_get_error_string(&devc->ftdic)); |
e46b8fb1 | 601 | return SR_ERR; |
28a35d8a HE |
602 | } |
603 | ||
0e1357e8 | 604 | ftdi_usb_purge_buffers(&devc->ftdic); |
28a35d8a | 605 | |
fefa1800 | 606 | /* Discard garbage. */ |
0e1357e8 | 607 | while (1 == sigma_read(&pins, 1, devc)) |
28a35d8a HE |
608 | ; |
609 | ||
fefa1800 | 610 | /* Initialize the logic analyzer mode. */ |
0e1357e8 | 611 | sigma_write(logic_mode_start, sizeof(logic_mode_start), devc); |
28a35d8a | 612 | |
fefa1800 | 613 | /* Expect a 3 byte reply. */ |
0e1357e8 | 614 | ret = sigma_read(result, 3, devc); |
28a35d8a HE |
615 | if (ret != 3 || |
616 | result[0] != 0xa6 || result[1] != 0x55 || result[2] != 0xaa) { | |
7b48d6e1 | 617 | sr_err("sigma: Configuration failed. Invalid reply received."); |
e46b8fb1 | 618 | return SR_ERR; |
28a35d8a HE |
619 | } |
620 | ||
0e1357e8 | 621 | devc->cur_firmware = firmware_idx; |
f6564c8d | 622 | |
e3fff420 HE |
623 | sr_info("sigma: Firmware uploaded"); |
624 | ||
e46b8fb1 | 625 | return SR_OK; |
f6564c8d HE |
626 | } |
627 | ||
25a0f108 | 628 | static int hw_dev_open(struct sr_dev_inst *sdi) |
f6564c8d | 629 | { |
0e1357e8 | 630 | struct dev_context *devc; |
f6564c8d HE |
631 | int ret; |
632 | ||
0e1357e8 | 633 | devc = sdi->priv; |
99965709 | 634 | |
9ddb2a12 | 635 | /* Make sure it's an ASIX SIGMA. */ |
0e1357e8 | 636 | if ((ret = ftdi_usb_open_desc(&devc->ftdic, |
f6564c8d HE |
637 | USB_VENDOR, USB_PRODUCT, USB_DESCRIPTION, NULL)) < 0) { |
638 | ||
7b48d6e1 | 639 | sr_err("sigma: ftdi_usb_open failed: %s", |
0e1357e8 | 640 | ftdi_get_error_string(&devc->ftdic)); |
f6564c8d HE |
641 | |
642 | return 0; | |
643 | } | |
28a35d8a | 644 | |
5a2326a7 | 645 | sdi->status = SR_ST_ACTIVE; |
28a35d8a | 646 | |
e46b8fb1 | 647 | return SR_OK; |
f6564c8d HE |
648 | } |
649 | ||
6f4b1868 | 650 | static int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) |
f6564c8d | 651 | { |
e8397563 | 652 | int i, ret; |
0e1357e8 | 653 | struct dev_context *devc = sdi->priv; |
f6564c8d HE |
654 | |
655 | for (i = 0; supported_samplerates[i]; i++) { | |
656 | if (supported_samplerates[i] == samplerate) | |
657 | break; | |
658 | } | |
659 | if (supported_samplerates[i] == 0) | |
e46b8fb1 | 660 | return SR_ERR_SAMPLERATE; |
f6564c8d | 661 | |
59df0c77 | 662 | if (samplerate <= SR_MHZ(50)) { |
0e1357e8 BV |
663 | ret = upload_firmware(0, devc); |
664 | devc->num_probes = 16; | |
e8397563 | 665 | } |
59df0c77 | 666 | if (samplerate == SR_MHZ(100)) { |
0e1357e8 BV |
667 | ret = upload_firmware(1, devc); |
668 | devc->num_probes = 8; | |
f78898e9 | 669 | } |
59df0c77 | 670 | else if (samplerate == SR_MHZ(200)) { |
0e1357e8 BV |
671 | ret = upload_firmware(2, devc); |
672 | devc->num_probes = 4; | |
f78898e9 | 673 | } |
f6564c8d | 674 | |
0e1357e8 BV |
675 | devc->cur_samplerate = samplerate; |
676 | devc->period_ps = 1000000000000 / samplerate; | |
677 | devc->samples_per_event = 16 / devc->num_probes; | |
678 | devc->state.state = SIGMA_IDLE; | |
f6564c8d | 679 | |
e8397563 | 680 | return ret; |
28a35d8a HE |
681 | } |
682 | ||
c53d793f HE |
683 | /* |
684 | * In 100 and 200 MHz mode, only a single pin rising/falling can be | |
685 | * set as trigger. In other modes, two rising/falling triggers can be set, | |
686 | * in addition to value/mask trigger for any number of probes. | |
687 | * | |
688 | * The Sigma supports complex triggers using boolean expressions, but this | |
689 | * has not been implemented yet. | |
690 | */ | |
014359e3 | 691 | static int configure_probes(const struct sr_dev_inst *sdi) |
57bbf56b | 692 | { |
0e1357e8 | 693 | struct dev_context *devc = sdi->priv; |
1b79df2f JH |
694 | const struct sr_probe *probe; |
695 | const GSList *l; | |
57bbf56b | 696 | int trigger_set = 0; |
a42aec7f | 697 | int probebit; |
57bbf56b | 698 | |
0e1357e8 | 699 | memset(&devc->trigger, 0, sizeof(struct sigma_trigger)); |
eec5275e | 700 | |
014359e3 | 701 | for (l = sdi->probes; l; l = l->next) { |
1afe8989 | 702 | probe = (struct sr_probe *)l->data; |
b35c8293 | 703 | probebit = 1 << (probe->index); |
57bbf56b HE |
704 | |
705 | if (!probe->enabled || !probe->trigger) | |
706 | continue; | |
707 | ||
0e1357e8 | 708 | if (devc->cur_samplerate >= SR_MHZ(100)) { |
c53d793f | 709 | /* Fast trigger support. */ |
ee492173 | 710 | if (trigger_set) { |
7b48d6e1 | 711 | sr_err("sigma: ASIX SIGMA only supports a single " |
133a37bf | 712 | "pin trigger in 100 and 200MHz mode."); |
e46b8fb1 | 713 | return SR_ERR; |
ee492173 HE |
714 | } |
715 | if (probe->trigger[0] == 'f') | |
0e1357e8 | 716 | devc->trigger.fallingmask |= probebit; |
ee492173 | 717 | else if (probe->trigger[0] == 'r') |
0e1357e8 | 718 | devc->trigger.risingmask |= probebit; |
ee492173 | 719 | else { |
7b48d6e1 | 720 | sr_err("sigma: ASIX SIGMA only supports " |
133a37bf UH |
721 | "rising/falling trigger in 100 " |
722 | "and 200MHz mode."); | |
e46b8fb1 | 723 | return SR_ERR; |
ee492173 | 724 | } |
57bbf56b | 725 | |
c53d793f | 726 | ++trigger_set; |
ee492173 | 727 | } else { |
c53d793f HE |
728 | /* Simple trigger support (event). */ |
729 | if (probe->trigger[0] == '1') { | |
0e1357e8 BV |
730 | devc->trigger.simplevalue |= probebit; |
731 | devc->trigger.simplemask |= probebit; | |
c53d793f HE |
732 | } |
733 | else if (probe->trigger[0] == '0') { | |
0e1357e8 BV |
734 | devc->trigger.simplevalue &= ~probebit; |
735 | devc->trigger.simplemask |= probebit; | |
c53d793f HE |
736 | } |
737 | else if (probe->trigger[0] == 'f') { | |
0e1357e8 | 738 | devc->trigger.fallingmask |= probebit; |
c53d793f HE |
739 | ++trigger_set; |
740 | } | |
741 | else if (probe->trigger[0] == 'r') { | |
0e1357e8 | 742 | devc->trigger.risingmask |= probebit; |
c53d793f HE |
743 | ++trigger_set; |
744 | } | |
ee492173 | 745 | |
ea9cfed7 UH |
746 | /* |
747 | * Actually, Sigma supports 2 rising/falling triggers, | |
748 | * but they are ORed and the current trigger syntax | |
749 | * does not permit ORed triggers. | |
750 | */ | |
98b8cbc1 | 751 | if (trigger_set > 1) { |
7b48d6e1 UH |
752 | sr_err("sigma: ASIX SIGMA only supports 1 " |
753 | "rising/falling triggers."); | |
e46b8fb1 | 754 | return SR_ERR; |
ee492173 | 755 | } |
ee492173 | 756 | } |
5b5ea7c6 HE |
757 | |
758 | if (trigger_set) | |
0e1357e8 | 759 | devc->use_triggers = 1; |
57bbf56b HE |
760 | } |
761 | ||
e46b8fb1 | 762 | return SR_OK; |
57bbf56b HE |
763 | } |
764 | ||
25a0f108 | 765 | static int hw_dev_close(struct sr_dev_inst *sdi) |
28a35d8a | 766 | { |
0e1357e8 | 767 | struct dev_context *devc; |
28a35d8a | 768 | |
0e1357e8 | 769 | if (!(devc = sdi->priv)) { |
340cfac0 | 770 | sr_err("sigma: %s: sdi->priv was NULL", __func__); |
0abee507 | 771 | return SR_ERR_BUG; |
9be9893e | 772 | } |
697785d1 UH |
773 | |
774 | /* TODO */ | |
775 | if (sdi->status == SR_ST_ACTIVE) | |
0e1357e8 | 776 | ftdi_usb_close(&devc->ftdic); |
697785d1 UH |
777 | |
778 | sdi->status = SR_ST_INACTIVE; | |
779 | ||
780 | return SR_OK; | |
28a35d8a HE |
781 | } |
782 | ||
57ab7d9f | 783 | static int hw_cleanup(void) |
28a35d8a | 784 | { |
99965709 | 785 | |
b32503cc BV |
786 | if (!adi->priv) |
787 | return SR_OK; | |
788 | ||
0448d110 | 789 | clear_instances(); |
57ab7d9f | 790 | |
0448d110 | 791 | return SR_OK; |
28a35d8a HE |
792 | } |
793 | ||
41479605 BV |
794 | static int hw_info_get(int info_id, const void **data, |
795 | const struct sr_dev_inst *sdi) | |
28a35d8a | 796 | { |
0e1357e8 | 797 | struct dev_context *devc; |
99965709 | 798 | |
41479605 | 799 | switch (info_id) { |
b2b5445c BV |
800 | case SR_DI_HWCAPS: |
801 | *data = hwcaps; | |
802 | break; | |
5a2326a7 | 803 | case SR_DI_NUM_PROBES: |
41479605 | 804 | *data = GINT_TO_POINTER(NUM_PROBES); |
464d12c7 KS |
805 | break; |
806 | case SR_DI_PROBE_NAMES: | |
41479605 | 807 | *data = probe_names; |
28a35d8a | 808 | break; |
5a2326a7 | 809 | case SR_DI_SAMPLERATES: |
41479605 | 810 | *data = &samplerates; |
28a35d8a | 811 | break; |
5a2326a7 | 812 | case SR_DI_TRIGGER_TYPES: |
41479605 | 813 | *data = (char *)TRIGGER_TYPES; |
28a35d8a | 814 | break; |
5a2326a7 | 815 | case SR_DI_CUR_SAMPLERATE: |
41479605 | 816 | if (sdi) { |
0e1357e8 BV |
817 | devc = sdi->priv; |
818 | *data = &devc->cur_samplerate; | |
41479605 BV |
819 | } else |
820 | return SR_ERR; | |
28a35d8a | 821 | break; |
d7bbecfd BV |
822 | default: |
823 | return SR_ERR_ARG; | |
28a35d8a HE |
824 | } |
825 | ||
41479605 | 826 | return SR_OK; |
28a35d8a HE |
827 | } |
828 | ||
6f4b1868 BV |
829 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
830 | const void *value) | |
28a35d8a | 831 | { |
0e1357e8 | 832 | struct dev_context *devc; |
28a35d8a | 833 | int ret; |
f6564c8d | 834 | |
0e1357e8 | 835 | devc = sdi->priv; |
99965709 | 836 | |
ffedd0bf | 837 | if (hwcap == SR_HWCAP_SAMPLERATE) { |
1b79df2f | 838 | ret = set_samplerate(sdi, *(const uint64_t *)value); |
ffedd0bf | 839 | } else if (hwcap == SR_HWCAP_LIMIT_MSEC) { |
0e1357e8 BV |
840 | devc->limit_msec = *(const uint64_t *)value; |
841 | if (devc->limit_msec > 0) | |
e46b8fb1 | 842 | ret = SR_OK; |
94ba4bd6 | 843 | else |
e46b8fb1 | 844 | ret = SR_ERR; |
ffedd0bf | 845 | } else if (hwcap == SR_HWCAP_CAPTURE_RATIO) { |
0e1357e8 BV |
846 | devc->capture_ratio = *(const uint64_t *)value; |
847 | if (devc->capture_ratio < 0 || devc->capture_ratio > 100) | |
e46b8fb1 | 848 | ret = SR_ERR; |
94ba4bd6 | 849 | else |
e46b8fb1 | 850 | ret = SR_OK; |
28a35d8a | 851 | } else { |
e46b8fb1 | 852 | ret = SR_ERR; |
28a35d8a HE |
853 | } |
854 | ||
855 | return ret; | |
856 | } | |
857 | ||
36b1c8e6 HE |
858 | /* Software trigger to determine exact trigger position. */ |
859 | static int get_trigger_offset(uint16_t *samples, uint16_t last_sample, | |
860 | struct sigma_trigger *t) | |
861 | { | |
862 | int i; | |
863 | ||
864 | for (i = 0; i < 8; ++i) { | |
865 | if (i > 0) | |
866 | last_sample = samples[i-1]; | |
867 | ||
868 | /* Simple triggers. */ | |
869 | if ((samples[i] & t->simplemask) != t->simplevalue) | |
870 | continue; | |
871 | ||
872 | /* Rising edge. */ | |
873 | if ((last_sample & t->risingmask) != 0 || (samples[i] & | |
874 | t->risingmask) != t->risingmask) | |
875 | continue; | |
876 | ||
877 | /* Falling edge. */ | |
bdfc7a89 HE |
878 | if ((last_sample & t->fallingmask) != t->fallingmask || |
879 | (samples[i] & t->fallingmask) != 0) | |
36b1c8e6 HE |
880 | continue; |
881 | ||
882 | break; | |
883 | } | |
884 | ||
885 | /* If we did not match, return original trigger pos. */ | |
886 | return i & 0x7; | |
887 | } | |
888 | ||
28a35d8a | 889 | /* |
fefa1800 UH |
890 | * Decode chunk of 1024 bytes, 64 clusters, 7 events per cluster. |
891 | * Each event is 20ns apart, and can contain multiple samples. | |
f78898e9 HE |
892 | * |
893 | * For 200 MHz, events contain 4 samples for each channel, spread 5 ns apart. | |
894 | * For 100 MHz, events contain 2 samples for each channel, spread 10 ns apart. | |
895 | * For 50 MHz and below, events contain one sample for each channel, | |
896 | * spread 20 ns apart. | |
28a35d8a HE |
897 | */ |
898 | static int decode_chunk_ts(uint8_t *buf, uint16_t *lastts, | |
88c51afe | 899 | uint16_t *lastsample, int triggerpos, |
3cd3a20b | 900 | uint16_t limit_chunk, void *cb_data) |
28a35d8a | 901 | { |
3cd3a20b | 902 | struct sr_dev_inst *sdi = cb_data; |
0e1357e8 | 903 | struct dev_context *devc = sdi->priv; |
fefa1800 | 904 | uint16_t tsdiff, ts; |
0e1357e8 | 905 | uint16_t samples[65536 * devc->samples_per_event]; |
b9c735a2 | 906 | struct sr_datafeed_packet packet; |
9c939c51 | 907 | struct sr_datafeed_logic logic; |
f78898e9 | 908 | int i, j, k, l, numpad, tosend; |
fefa1800 | 909 | size_t n = 0, sent = 0; |
0e1357e8 | 910 | int clustersize = EVENTS_PER_CLUSTER * devc->samples_per_event; |
fefa1800 | 911 | uint16_t *event; |
f78898e9 | 912 | uint16_t cur_sample; |
57bbf56b | 913 | int triggerts = -1; |
ee492173 | 914 | |
4ae1f451 | 915 | /* Check if trigger is in this chunk. */ |
ee492173 | 916 | if (triggerpos != -1) { |
0e1357e8 | 917 | if (devc->cur_samplerate <= SR_MHZ(50)) |
36b1c8e6 | 918 | triggerpos -= EVENTS_PER_CLUSTER - 1; |
ee492173 HE |
919 | |
920 | if (triggerpos < 0) | |
921 | triggerpos = 0; | |
57bbf56b | 922 | |
ee492173 HE |
923 | /* Find in which cluster the trigger occured. */ |
924 | triggerts = triggerpos / 7; | |
925 | } | |
28a35d8a | 926 | |
eec5275e | 927 | /* For each ts. */ |
28a35d8a | 928 | for (i = 0; i < 64; ++i) { |
fefa1800 | 929 | ts = *(uint16_t *) &buf[i * 16]; |
28a35d8a HE |
930 | tsdiff = ts - *lastts; |
931 | *lastts = ts; | |
932 | ||
88c51afe HE |
933 | /* Decode partial chunk. */ |
934 | if (limit_chunk && ts > limit_chunk) | |
e46b8fb1 | 935 | return SR_OK; |
88c51afe | 936 | |
fefa1800 | 937 | /* Pad last sample up to current point. */ |
0e1357e8 | 938 | numpad = tsdiff * devc->samples_per_event - clustersize; |
28a35d8a | 939 | if (numpad > 0) { |
f78898e9 HE |
940 | for (j = 0; j < numpad; ++j) |
941 | samples[j] = *lastsample; | |
942 | ||
943 | n = numpad; | |
28a35d8a HE |
944 | } |
945 | ||
57bbf56b HE |
946 | /* Send samples between previous and this timestamp to sigrok. */ |
947 | sent = 0; | |
948 | while (sent < n) { | |
949 | tosend = MIN(2048, n - sent); | |
950 | ||
5a2326a7 | 951 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
952 | packet.payload = &logic; |
953 | logic.length = tosend * sizeof(uint16_t); | |
954 | logic.unitsize = 2; | |
955 | logic.data = samples + sent; | |
0e1357e8 | 956 | sr_session_send(devc->session_dev_id, &packet); |
28a35d8a | 957 | |
57bbf56b HE |
958 | sent += tosend; |
959 | } | |
960 | n = 0; | |
961 | ||
962 | event = (uint16_t *) &buf[i * 16 + 2]; | |
f78898e9 HE |
963 | cur_sample = 0; |
964 | ||
965 | /* For each event in cluster. */ | |
28a35d8a | 966 | for (j = 0; j < 7; ++j) { |
f78898e9 HE |
967 | |
968 | /* For each sample in event. */ | |
0e1357e8 | 969 | for (k = 0; k < devc->samples_per_event; ++k) { |
f78898e9 HE |
970 | cur_sample = 0; |
971 | ||
972 | /* For each probe. */ | |
0e1357e8 | 973 | for (l = 0; l < devc->num_probes; ++l) |
edca2c5c | 974 | cur_sample |= (!!(event[j] & (1 << (l * |
0e1357e8 | 975 | devc->samples_per_event + k)))) << l; |
f78898e9 HE |
976 | |
977 | samples[n++] = cur_sample; | |
28a35d8a HE |
978 | } |
979 | } | |
980 | ||
eec5275e | 981 | /* Send data up to trigger point (if triggered). */ |
fefa1800 | 982 | sent = 0; |
57bbf56b HE |
983 | if (i == triggerts) { |
984 | /* | |
36b1c8e6 HE |
985 | * Trigger is not always accurate to sample because of |
986 | * pipeline delay. However, it always triggers before | |
987 | * the actual event. We therefore look at the next | |
988 | * samples to pinpoint the exact position of the trigger. | |
57bbf56b | 989 | */ |
bdfc7a89 | 990 | tosend = get_trigger_offset(samples, *lastsample, |
0e1357e8 | 991 | &devc->trigger); |
57bbf56b HE |
992 | |
993 | if (tosend > 0) { | |
5a2326a7 | 994 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
995 | packet.payload = &logic; |
996 | logic.length = tosend * sizeof(uint16_t); | |
997 | logic.unitsize = 2; | |
998 | logic.data = samples; | |
0e1357e8 | 999 | sr_session_send(devc->session_dev_id, &packet); |
57bbf56b HE |
1000 | |
1001 | sent += tosend; | |
1002 | } | |
28a35d8a | 1003 | |
5b5ea7c6 | 1004 | /* Only send trigger if explicitly enabled. */ |
0e1357e8 | 1005 | if (devc->use_triggers) { |
5a2326a7 | 1006 | packet.type = SR_DF_TRIGGER; |
0e1357e8 | 1007 | sr_session_send(devc->session_dev_id, &packet); |
5b5ea7c6 | 1008 | } |
28a35d8a | 1009 | } |
57bbf56b | 1010 | |
eec5275e | 1011 | /* Send rest of the chunk to sigrok. */ |
57bbf56b HE |
1012 | tosend = n - sent; |
1013 | ||
abda62ce | 1014 | if (tosend > 0) { |
5a2326a7 | 1015 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
1016 | packet.payload = &logic; |
1017 | logic.length = tosend * sizeof(uint16_t); | |
1018 | logic.unitsize = 2; | |
1019 | logic.data = samples + sent; | |
0e1357e8 | 1020 | sr_session_send(devc->session_dev_id, &packet); |
abda62ce | 1021 | } |
ee492173 HE |
1022 | |
1023 | *lastsample = samples[n - 1]; | |
28a35d8a HE |
1024 | } |
1025 | ||
e46b8fb1 | 1026 | return SR_OK; |
28a35d8a HE |
1027 | } |
1028 | ||
1f9813eb | 1029 | static int receive_data(int fd, int revents, void *cb_data) |
28a35d8a | 1030 | { |
1f9813eb | 1031 | struct sr_dev_inst *sdi = cb_data; |
0e1357e8 | 1032 | struct dev_context *devc = sdi->priv; |
b9c735a2 | 1033 | struct sr_datafeed_packet packet; |
28a35d8a HE |
1034 | const int chunks_per_read = 32; |
1035 | unsigned char buf[chunks_per_read * CHUNK_SIZE]; | |
6aac7737 | 1036 | int bufsz, numchunks, i, newchunks; |
94ba4bd6 | 1037 | uint64_t running_msec; |
28a35d8a | 1038 | struct timeval tv; |
28a35d8a | 1039 | |
cb93f8a9 UH |
1040 | /* Avoid compiler warnings. */ |
1041 | (void)fd; | |
1042 | (void)revents; | |
28a35d8a | 1043 | |
805919b0 | 1044 | /* Get the current position. */ |
0e1357e8 | 1045 | sigma_read_pos(&devc->state.stoppos, &devc->state.triggerpos, devc); |
805919b0 | 1046 | |
0e1357e8 | 1047 | numchunks = (devc->state.stoppos + 511) / 512; |
28a35d8a | 1048 | |
0e1357e8 | 1049 | if (devc->state.state == SIGMA_IDLE) |
805919b0 | 1050 | return TRUE; |
28a35d8a | 1051 | |
0e1357e8 | 1052 | if (devc->state.state == SIGMA_CAPTURE) { |
6aac7737 HE |
1053 | /* Check if the timer has expired, or memory is full. */ |
1054 | gettimeofday(&tv, 0); | |
0e1357e8 BV |
1055 | running_msec = (tv.tv_sec - devc->start_tv.tv_sec) * 1000 + |
1056 | (tv.tv_usec - devc->start_tv.tv_usec) / 1000; | |
28a35d8a | 1057 | |
0e1357e8 | 1058 | if (running_msec < devc->limit_msec && numchunks < 32767) |
805919b0 | 1059 | return TRUE; /* While capturing... */ |
e3fff420 | 1060 | else |
3ffb6964 | 1061 | hw_dev_acquisition_stop(sdi, sdi); |
6aac7737 | 1062 | |
0e1357e8 BV |
1063 | } else if (devc->state.state == SIGMA_DOWNLOAD) { |
1064 | if (devc->state.chunks_downloaded >= numchunks) { | |
6aac7737 | 1065 | /* End of samples. */ |
5a2326a7 | 1066 | packet.type = SR_DF_END; |
0e1357e8 | 1067 | sr_session_send(devc->session_dev_id, &packet); |
6aac7737 | 1068 | |
0e1357e8 | 1069 | devc->state.state = SIGMA_IDLE; |
f78898e9 | 1070 | |
6aac7737 HE |
1071 | return TRUE; |
1072 | } | |
1073 | ||
1074 | newchunks = MIN(chunks_per_read, | |
0e1357e8 | 1075 | numchunks - devc->state.chunks_downloaded); |
28a35d8a | 1076 | |
7b48d6e1 | 1077 | sr_info("sigma: Downloading sample data: %.0f %%", |
0e1357e8 | 1078 | 100.0 * devc->state.chunks_downloaded / numchunks); |
28a35d8a | 1079 | |
0e1357e8 BV |
1080 | bufsz = sigma_read_dram(devc->state.chunks_downloaded, |
1081 | newchunks, buf, devc); | |
719c5a93 UH |
1082 | /* TODO: Check bufsz. For now, just avoid compiler warnings. */ |
1083 | (void)bufsz; | |
28a35d8a | 1084 | |
fefa1800 | 1085 | /* Find first ts. */ |
0e1357e8 BV |
1086 | if (devc->state.chunks_downloaded == 0) { |
1087 | devc->state.lastts = *(uint16_t *) buf - 1; | |
1088 | devc->state.lastsample = 0; | |
6aac7737 | 1089 | } |
28a35d8a | 1090 | |
fefa1800 | 1091 | /* Decode chunks and send them to sigrok. */ |
28a35d8a | 1092 | for (i = 0; i < newchunks; ++i) { |
88c51afe HE |
1093 | int limit_chunk = 0; |
1094 | ||
1095 | /* The last chunk may potentially be only in part. */ | |
0e1357e8 | 1096 | if (devc->state.chunks_downloaded == numchunks - 1) { |
88c51afe | 1097 | /* Find the last valid timestamp */ |
0e1357e8 | 1098 | limit_chunk = devc->state.stoppos % 512 + devc->state.lastts; |
88c51afe HE |
1099 | } |
1100 | ||
0e1357e8 | 1101 | if (devc->state.chunks_downloaded + i == devc->state.triggerchunk) |
57bbf56b | 1102 | decode_chunk_ts(buf + (i * CHUNK_SIZE), |
0e1357e8 BV |
1103 | &devc->state.lastts, |
1104 | &devc->state.lastsample, | |
1105 | devc->state.triggerpos & 0x1ff, | |
1f9813eb | 1106 | limit_chunk, sdi); |
57bbf56b HE |
1107 | else |
1108 | decode_chunk_ts(buf + (i * CHUNK_SIZE), | |
0e1357e8 BV |
1109 | &devc->state.lastts, |
1110 | &devc->state.lastsample, | |
1f9813eb | 1111 | -1, limit_chunk, sdi); |
28a35d8a | 1112 | |
0e1357e8 | 1113 | ++devc->state.chunks_downloaded; |
88c51afe | 1114 | } |
28a35d8a HE |
1115 | } |
1116 | ||
28a35d8a HE |
1117 | return TRUE; |
1118 | } | |
1119 | ||
c53d793f HE |
1120 | /* Build a LUT entry used by the trigger functions. */ |
1121 | static void build_lut_entry(uint16_t value, uint16_t mask, uint16_t *entry) | |
ee492173 HE |
1122 | { |
1123 | int i, j, k, bit; | |
1124 | ||
f758d074 | 1125 | /* For each quad probe. */ |
ee492173 | 1126 | for (i = 0; i < 4; ++i) { |
c53d793f | 1127 | entry[i] = 0xffff; |
ee492173 | 1128 | |
f758d074 | 1129 | /* For each bit in LUT. */ |
ee492173 HE |
1130 | for (j = 0; j < 16; ++j) |
1131 | ||
f758d074 | 1132 | /* For each probe in quad. */ |
ee492173 HE |
1133 | for (k = 0; k < 4; ++k) { |
1134 | bit = 1 << (i * 4 + k); | |
1135 | ||
c53d793f HE |
1136 | /* Set bit in entry */ |
1137 | if ((mask & bit) && | |
1138 | ((!(value & bit)) != | |
4ae1f451 | 1139 | (!(j & (1 << k))))) |
c53d793f | 1140 | entry[i] &= ~(1 << j); |
ee492173 HE |
1141 | } |
1142 | } | |
c53d793f | 1143 | } |
ee492173 | 1144 | |
c53d793f HE |
1145 | /* Add a logical function to LUT mask. */ |
1146 | static void add_trigger_function(enum triggerop oper, enum triggerfunc func, | |
1147 | int index, int neg, uint16_t *mask) | |
1148 | { | |
1149 | int i, j; | |
1150 | int x[2][2], tmp, a, b, aset, bset, rset; | |
1151 | ||
1152 | memset(x, 0, 4 * sizeof(int)); | |
1153 | ||
1154 | /* Trigger detect condition. */ | |
1155 | switch (oper) { | |
1156 | case OP_LEVEL: | |
1157 | x[0][1] = 1; | |
1158 | x[1][1] = 1; | |
1159 | break; | |
1160 | case OP_NOT: | |
1161 | x[0][0] = 1; | |
1162 | x[1][0] = 1; | |
1163 | break; | |
1164 | case OP_RISE: | |
1165 | x[0][1] = 1; | |
1166 | break; | |
1167 | case OP_FALL: | |
1168 | x[1][0] = 1; | |
1169 | break; | |
1170 | case OP_RISEFALL: | |
1171 | x[0][1] = 1; | |
1172 | x[1][0] = 1; | |
1173 | break; | |
1174 | case OP_NOTRISE: | |
1175 | x[1][1] = 1; | |
1176 | x[0][0] = 1; | |
1177 | x[1][0] = 1; | |
1178 | break; | |
1179 | case OP_NOTFALL: | |
1180 | x[1][1] = 1; | |
1181 | x[0][0] = 1; | |
1182 | x[0][1] = 1; | |
1183 | break; | |
1184 | case OP_NOTRISEFALL: | |
1185 | x[1][1] = 1; | |
1186 | x[0][0] = 1; | |
1187 | break; | |
1188 | } | |
1189 | ||
1190 | /* Transpose if neg is set. */ | |
1191 | if (neg) { | |
ea9cfed7 | 1192 | for (i = 0; i < 2; ++i) { |
c53d793f HE |
1193 | for (j = 0; j < 2; ++j) { |
1194 | tmp = x[i][j]; | |
1195 | x[i][j] = x[1-i][1-j]; | |
1196 | x[1-i][1-j] = tmp; | |
1197 | } | |
ea9cfed7 | 1198 | } |
c53d793f HE |
1199 | } |
1200 | ||
1201 | /* Update mask with function. */ | |
1202 | for (i = 0; i < 16; ++i) { | |
1203 | a = (i >> (2 * index + 0)) & 1; | |
1204 | b = (i >> (2 * index + 1)) & 1; | |
1205 | ||
1206 | aset = (*mask >> i) & 1; | |
1207 | bset = x[b][a]; | |
1208 | ||
1209 | if (func == FUNC_AND || func == FUNC_NAND) | |
1210 | rset = aset & bset; | |
1211 | else if (func == FUNC_OR || func == FUNC_NOR) | |
1212 | rset = aset | bset; | |
1213 | else if (func == FUNC_XOR || func == FUNC_NXOR) | |
1214 | rset = aset ^ bset; | |
1215 | ||
1216 | if (func == FUNC_NAND || func == FUNC_NOR || func == FUNC_NXOR) | |
1217 | rset = !rset; | |
1218 | ||
1219 | *mask &= ~(1 << i); | |
1220 | ||
1221 | if (rset) | |
1222 | *mask |= 1 << i; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | /* | |
1227 | * Build trigger LUTs used by 50 MHz and lower sample rates for supporting | |
1228 | * simple pin change and state triggers. Only two transitions (rise/fall) can be | |
1229 | * set at any time, but a full mask and value can be set (0/1). | |
1230 | */ | |
0e1357e8 | 1231 | static int build_basic_trigger(struct triggerlut *lut, struct dev_context *devc) |
c53d793f HE |
1232 | { |
1233 | int i,j; | |
4ae1f451 | 1234 | uint16_t masks[2] = { 0, 0 }; |
c53d793f HE |
1235 | |
1236 | memset(lut, 0, sizeof(struct triggerlut)); | |
1237 | ||
1238 | /* Contant for simple triggers. */ | |
1239 | lut->m4 = 0xa000; | |
1240 | ||
1241 | /* Value/mask trigger support. */ | |
0e1357e8 | 1242 | build_lut_entry(devc->trigger.simplevalue, devc->trigger.simplemask, |
99965709 | 1243 | lut->m2d); |
c53d793f HE |
1244 | |
1245 | /* Rise/fall trigger support. */ | |
1246 | for (i = 0, j = 0; i < 16; ++i) { | |
0e1357e8 BV |
1247 | if (devc->trigger.risingmask & (1 << i) || |
1248 | devc->trigger.fallingmask & (1 << i)) | |
c53d793f HE |
1249 | masks[j++] = 1 << i; |
1250 | } | |
1251 | ||
1252 | build_lut_entry(masks[0], masks[0], lut->m0d); | |
1253 | build_lut_entry(masks[1], masks[1], lut->m1d); | |
1254 | ||
1255 | /* Add glue logic */ | |
1256 | if (masks[0] || masks[1]) { | |
1257 | /* Transition trigger. */ | |
0e1357e8 | 1258 | if (masks[0] & devc->trigger.risingmask) |
c53d793f | 1259 | add_trigger_function(OP_RISE, FUNC_OR, 0, 0, &lut->m3); |
0e1357e8 | 1260 | if (masks[0] & devc->trigger.fallingmask) |
c53d793f | 1261 | add_trigger_function(OP_FALL, FUNC_OR, 0, 0, &lut->m3); |
0e1357e8 | 1262 | if (masks[1] & devc->trigger.risingmask) |
c53d793f | 1263 | add_trigger_function(OP_RISE, FUNC_OR, 1, 0, &lut->m3); |
0e1357e8 | 1264 | if (masks[1] & devc->trigger.fallingmask) |
c53d793f HE |
1265 | add_trigger_function(OP_FALL, FUNC_OR, 1, 0, &lut->m3); |
1266 | } else { | |
1267 | /* Only value/mask trigger. */ | |
1268 | lut->m3 = 0xffff; | |
1269 | } | |
ee492173 | 1270 | |
c53d793f | 1271 | /* Triggertype: event. */ |
ee492173 HE |
1272 | lut->params.selres = 3; |
1273 | ||
e46b8fb1 | 1274 | return SR_OK; |
ee492173 HE |
1275 | } |
1276 | ||
3ffb6964 BV |
1277 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
1278 | void *cb_data) | |
28a35d8a | 1279 | { |
0e1357e8 | 1280 | struct dev_context *devc; |
3c36c403 HE |
1281 | struct sr_datafeed_packet *packet; |
1282 | struct sr_datafeed_header *header; | |
f366e86c | 1283 | struct sr_datafeed_meta_logic meta; |
9ddb2a12 | 1284 | struct clockselect_50 clockselect; |
82957b65 | 1285 | int frac, triggerpin, ret; |
57bbf56b HE |
1286 | uint8_t triggerselect; |
1287 | struct triggerinout triggerinout_conf; | |
ee492173 | 1288 | struct triggerlut lut; |
28a35d8a | 1289 | |
0e1357e8 | 1290 | devc = sdi->priv; |
28a35d8a | 1291 | |
014359e3 BV |
1292 | if (configure_probes(sdi) != SR_OK) { |
1293 | sr_err("asix-sigma: failed to configured probes"); | |
1294 | return SR_ERR; | |
1295 | } | |
1296 | ||
ea9cfed7 | 1297 | /* If the samplerate has not been set, default to 200 kHz. */ |
0e1357e8 | 1298 | if (devc->cur_firmware == -1) { |
82957b65 UH |
1299 | if ((ret = set_samplerate(sdi, SR_KHZ(200))) != SR_OK) |
1300 | return ret; | |
1301 | } | |
e8397563 | 1302 | |
eec5275e | 1303 | /* Enter trigger programming mode. */ |
0e1357e8 | 1304 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, devc); |
28a35d8a | 1305 | |
eec5275e | 1306 | /* 100 and 200 MHz mode. */ |
0e1357e8 BV |
1307 | if (devc->cur_samplerate >= SR_MHZ(100)) { |
1308 | sigma_set_register(WRITE_TRIGGER_SELECT1, 0x81, devc); | |
57bbf56b | 1309 | |
a42aec7f HE |
1310 | /* Find which pin to trigger on from mask. */ |
1311 | for (triggerpin = 0; triggerpin < 8; ++triggerpin) | |
0e1357e8 | 1312 | if ((devc->trigger.risingmask | devc->trigger.fallingmask) & |
a42aec7f HE |
1313 | (1 << triggerpin)) |
1314 | break; | |
1315 | ||
1316 | /* Set trigger pin and light LED on trigger. */ | |
1317 | triggerselect = (1 << LEDSEL1) | (triggerpin & 0x7); | |
1318 | ||
1319 | /* Default rising edge. */ | |
0e1357e8 | 1320 | if (devc->trigger.fallingmask) |
a42aec7f | 1321 | triggerselect |= 1 << 3; |
57bbf56b | 1322 | |
eec5275e | 1323 | /* All other modes. */ |
0e1357e8 BV |
1324 | } else if (devc->cur_samplerate <= SR_MHZ(50)) { |
1325 | build_basic_trigger(&lut, devc); | |
ee492173 | 1326 | |
0e1357e8 | 1327 | sigma_write_trigger_lut(&lut, devc); |
57bbf56b HE |
1328 | |
1329 | triggerselect = (1 << LEDSEL1) | (1 << LEDSEL0); | |
1330 | } | |
1331 | ||
eec5275e | 1332 | /* Setup trigger in and out pins to default values. */ |
57bbf56b HE |
1333 | memset(&triggerinout_conf, 0, sizeof(struct triggerinout)); |
1334 | triggerinout_conf.trgout_bytrigger = 1; | |
1335 | triggerinout_conf.trgout_enable = 1; | |
1336 | ||
28a35d8a | 1337 | sigma_write_register(WRITE_TRIGGER_OPTION, |
57bbf56b | 1338 | (uint8_t *) &triggerinout_conf, |
0e1357e8 | 1339 | sizeof(struct triggerinout), devc); |
28a35d8a | 1340 | |
eec5275e | 1341 | /* Go back to normal mode. */ |
0e1357e8 | 1342 | sigma_set_register(WRITE_TRIGGER_SELECT1, triggerselect, devc); |
28a35d8a | 1343 | |
edca2c5c | 1344 | /* Set clock select register. */ |
0e1357e8 | 1345 | if (devc->cur_samplerate == SR_MHZ(200)) |
edca2c5c | 1346 | /* Enable 4 probes. */ |
0e1357e8 BV |
1347 | sigma_set_register(WRITE_CLOCK_SELECT, 0xf0, devc); |
1348 | else if (devc->cur_samplerate == SR_MHZ(100)) | |
edca2c5c | 1349 | /* Enable 8 probes. */ |
0e1357e8 | 1350 | sigma_set_register(WRITE_CLOCK_SELECT, 0x00, devc); |
edca2c5c HE |
1351 | else { |
1352 | /* | |
9ddb2a12 | 1353 | * 50 MHz mode (or fraction thereof). Any fraction down to |
eec5275e | 1354 | * 50 MHz / 256 can be used, but is not supported by sigrok API. |
edca2c5c | 1355 | */ |
0e1357e8 | 1356 | frac = SR_MHZ(50) / devc->cur_samplerate - 1; |
edca2c5c | 1357 | |
9ddb2a12 UH |
1358 | clockselect.async = 0; |
1359 | clockselect.fraction = frac; | |
1360 | clockselect.disabled_probes = 0; | |
edca2c5c HE |
1361 | |
1362 | sigma_write_register(WRITE_CLOCK_SELECT, | |
9ddb2a12 | 1363 | (uint8_t *) &clockselect, |
0e1357e8 | 1364 | sizeof(clockselect), devc); |
edca2c5c HE |
1365 | } |
1366 | ||
fefa1800 | 1367 | /* Setup maximum post trigger time. */ |
99965709 | 1368 | sigma_set_register(WRITE_POST_TRIGGER, |
0e1357e8 | 1369 | (devc->capture_ratio * 255) / 100, devc); |
28a35d8a | 1370 | |
eec5275e | 1371 | /* Start acqusition. */ |
0e1357e8 BV |
1372 | gettimeofday(&devc->start_tv, 0); |
1373 | sigma_set_register(WRITE_MODE, 0x0d, devc); | |
99965709 | 1374 | |
0e1357e8 | 1375 | devc->session_dev_id = cb_data; |
28a35d8a | 1376 | |
3c36c403 HE |
1377 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { |
1378 | sr_err("sigma: %s: packet malloc failed.", __func__); | |
1379 | return SR_ERR_MALLOC; | |
1380 | } | |
1381 | ||
1382 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
1383 | sr_err("sigma: %s: header malloc failed.", __func__); | |
1384 | return SR_ERR_MALLOC; | |
1385 | } | |
28a35d8a | 1386 | |
3c36c403 HE |
1387 | /* Send header packet to the session bus. */ |
1388 | packet->type = SR_DF_HEADER; | |
1389 | packet->payload = header; | |
1390 | header->feed_version = 1; | |
1391 | gettimeofday(&header->starttime, NULL); | |
0e1357e8 | 1392 | sr_session_send(devc->session_dev_id, packet); |
f366e86c BV |
1393 | |
1394 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
1395 | packet->type = SR_DF_META_LOGIC; | |
1396 | packet->payload = &meta; | |
0e1357e8 BV |
1397 | meta.samplerate = devc->cur_samplerate; |
1398 | meta.num_probes = devc->num_probes; | |
1399 | sr_session_send(devc->session_dev_id, packet); | |
f366e86c BV |
1400 | |
1401 | /* Add capture source. */ | |
3ffb6964 | 1402 | sr_source_add(0, G_IO_IN, 10, receive_data, (void *)sdi); |
f366e86c | 1403 | |
3c36c403 HE |
1404 | g_free(header); |
1405 | g_free(packet); | |
1406 | ||
0e1357e8 | 1407 | devc->state.state = SIGMA_CAPTURE; |
6aac7737 | 1408 | |
e46b8fb1 | 1409 | return SR_OK; |
28a35d8a HE |
1410 | } |
1411 | ||
3ffb6964 BV |
1412 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
1413 | void *cb_data) | |
28a35d8a | 1414 | { |
0e1357e8 | 1415 | struct dev_context *devc; |
6aac7737 HE |
1416 | uint8_t modestatus; |
1417 | ||
cb93f8a9 | 1418 | /* Avoid compiler warnings. */ |
3cd3a20b | 1419 | (void)cb_data; |
28a35d8a | 1420 | |
503c4afb BV |
1421 | sr_source_remove(0); |
1422 | ||
0e1357e8 | 1423 | if (!(devc = sdi->priv)) { |
7b48d6e1 | 1424 | sr_err("sigma: %s: sdi->priv was NULL", __func__); |
3010f21c UH |
1425 | return SR_ERR_BUG; |
1426 | } | |
1427 | ||
fefa1800 | 1428 | /* Stop acquisition. */ |
0e1357e8 | 1429 | sigma_set_register(WRITE_MODE, 0x11, devc); |
28a35d8a | 1430 | |
6aac7737 | 1431 | /* Set SDRAM Read Enable. */ |
0e1357e8 | 1432 | sigma_set_register(WRITE_MODE, 0x02, devc); |
6aac7737 HE |
1433 | |
1434 | /* Get the current position. */ | |
0e1357e8 | 1435 | sigma_read_pos(&devc->state.stoppos, &devc->state.triggerpos, devc); |
6aac7737 HE |
1436 | |
1437 | /* Check if trigger has fired. */ | |
0e1357e8 | 1438 | modestatus = sigma_get_register(READ_MODE, devc); |
3010f21c | 1439 | if (modestatus & 0x20) |
0e1357e8 | 1440 | devc->state.triggerchunk = devc->state.triggerpos / 512; |
3010f21c | 1441 | else |
0e1357e8 | 1442 | devc->state.triggerchunk = -1; |
6aac7737 | 1443 | |
0e1357e8 | 1444 | devc->state.chunks_downloaded = 0; |
6aac7737 | 1445 | |
0e1357e8 | 1446 | devc->state.state = SIGMA_DOWNLOAD; |
3010f21c UH |
1447 | |
1448 | return SR_OK; | |
28a35d8a HE |
1449 | } |
1450 | ||
c09f0b57 | 1451 | SR_PRIV struct sr_dev_driver asix_sigma_driver_info = { |
e519ba86 | 1452 | .name = "asix-sigma", |
6352d030 | 1453 | .longname = "ASIX SIGMA/SIGMA2", |
e519ba86 UH |
1454 | .api_version = 1, |
1455 | .init = hw_init, | |
1456 | .cleanup = hw_cleanup, | |
61136ea6 | 1457 | .scan = hw_scan, |
e7eb703f UH |
1458 | .dev_open = hw_dev_open, |
1459 | .dev_close = hw_dev_close, | |
41479605 | 1460 | .info_get = hw_info_get, |
a9a245b4 | 1461 | .dev_config_set = hw_dev_config_set, |
6b3dfec8 UH |
1462 | .dev_acquisition_start = hw_dev_acquisition_start, |
1463 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
0e1357e8 | 1464 | .priv = NULL, |
28a35d8a | 1465 | }; |