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f4314d7e UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <ftdi.h> | |
ecaf59db | 22 | #include <glib.h> |
4362438f | 23 | #include <string.h> |
cd853ff0 | 24 | #include <stdlib.h> |
b7f09cf8 UH |
25 | #include "sigrok.h" |
26 | #include "sigrok-internal.h" | |
f4314d7e UH |
27 | |
28 | #define USB_VENDOR_ID 0x0403 | |
29 | #define USB_PRODUCT_ID 0x6001 | |
30 | #define USB_DESCRIPTION "ChronoVu LA8" | |
31 | #define USB_VENDOR_NAME "ChronoVu" | |
32 | #define USB_MODEL_NAME "LA8" | |
33 | #define USB_MODEL_VERSION "" | |
34 | ||
35 | #define NUM_PROBES 8 | |
36 | #define TRIGGER_TYPES "01" | |
37 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
38 | #define MIN_NUM_SAMPLES 1 | |
39 | ||
a76983fd UH |
40 | #define BS 4096 /* Block size */ |
41 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
42 | ||
d68e2d1a | 43 | static GSList *dev_insts = NULL; |
f4314d7e | 44 | |
c37d2b1b | 45 | static const char *probe_names[NUM_PROBES + 1] = { |
464d12c7 KS |
46 | "0", |
47 | "1", | |
48 | "2", | |
49 | "3", | |
50 | "4", | |
51 | "5", | |
52 | "6", | |
53 | "7", | |
54 | NULL, | |
55 | }; | |
56 | ||
f4314d7e UH |
57 | struct la8 { |
58 | /** FTDI device context (used by libftdi). */ | |
59 | struct ftdi_context *ftdic; | |
60 | ||
61 | /** The currently configured samplerate of the device. */ | |
62 | uint64_t cur_samplerate; | |
63 | ||
64 | /** The current sampling limit (in ms). */ | |
65 | uint64_t limit_msec; | |
66 | ||
67 | /** The current sampling limit (in number of samples). */ | |
68 | uint64_t limit_samples; | |
69 | ||
f4314d7e UH |
70 | /** TODO */ |
71 | gpointer session_id; | |
72 | ||
73 | /** | |
a76983fd | 74 | * A buffer containing some (mangled) samples from the device. |
f4314d7e UH |
75 | * Format: Pretty mangled-up (due to hardware reasons), see code. |
76 | */ | |
a76983fd | 77 | uint8_t mangled_buf[BS]; |
f4314d7e UH |
78 | |
79 | /** | |
80 | * An 8MB buffer where we'll store the de-mangled samples. | |
81 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
82 | */ | |
83 | uint8_t *final_buf; | |
84 | ||
85 | /** | |
86 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
87 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
88 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
89 | */ | |
90 | uint8_t trigger_pattern; | |
91 | ||
92 | /** | |
93 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
94 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
95 | */ | |
96 | uint8_t trigger_mask; | |
97 | ||
98 | /** Time (in seconds) before the trigger times out. */ | |
99 | uint64_t trigger_timeout; | |
100 | ||
4d7b525a UH |
101 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ |
102 | int trigger_found; | |
103 | ||
f4314d7e UH |
104 | /** TODO */ |
105 | time_t done; | |
106 | ||
a76983fd | 107 | /** Counter/index for the data block to be read. */ |
f4314d7e UH |
108 | int block_counter; |
109 | ||
110 | /** The divcount value (determines the sample period) for the LA8. */ | |
111 | uint8_t divcount; | |
112 | }; | |
113 | ||
5097b0d0 | 114 | /* This will be initialized via hw_dev_info_get()/SR_DI_SAMPLERATES. */ |
f4314d7e UH |
115 | static uint64_t supported_samplerates[255 + 1] = { 0 }; |
116 | ||
117 | /* | |
118 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
119 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
120 | */ | |
121 | static struct sr_samplerates samplerates = { | |
122 | .low = 0, | |
123 | .high = 0, | |
124 | .step = 0, | |
125 | .list = supported_samplerates, | |
126 | }; | |
127 | ||
128 | /* Note: Continuous sampling is not supported by the hardware. */ | |
ffedd0bf | 129 | static int hwcaps[] = { |
f4314d7e UH |
130 | SR_HWCAP_LOGIC_ANALYZER, |
131 | SR_HWCAP_SAMPLERATE, | |
132 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
133 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
134 | 0, | |
135 | }; | |
136 | ||
137 | /* Function prototypes. */ | |
138 | static int la8_close_usb_reset_sequencer(struct la8 *la8); | |
8105505d | 139 | static int hw_acquisition_stop(int dev_index, gpointer session_data); |
f4314d7e UH |
140 | static int la8_reset(struct la8 *la8); |
141 | ||
142 | static void fill_supported_samplerates_if_needed(void) | |
143 | { | |
144 | int i; | |
145 | ||
146 | /* Do nothing if supported_samplerates[] is already filled. */ | |
147 | if (supported_samplerates[0] != 0) | |
148 | return; | |
149 | ||
150 | /* Fill supported_samplerates[] with the proper values. */ | |
151 | for (i = 0; i < 255; i++) | |
152 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
153 | supported_samplerates[255] = 0; | |
154 | } | |
155 | ||
156 | /** | |
157 | * Check if the given samplerate is supported by the LA8 hardware. | |
158 | * | |
159 | * @param samplerate The samplerate (in Hz) to check. | |
160 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
161 | */ | |
162 | static int is_valid_samplerate(uint64_t samplerate) | |
163 | { | |
164 | int i; | |
165 | ||
166 | fill_supported_samplerates_if_needed(); | |
167 | ||
168 | for (i = 0; i < 255; i++) { | |
169 | if (supported_samplerates[i] == samplerate) | |
170 | return 1; | |
171 | } | |
172 | ||
133a37bf UH |
173 | sr_err("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
174 | __func__, samplerate); | |
f4314d7e UH |
175 | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /** | |
180 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
181 | * | |
182 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
183 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
184 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
185 | * | |
186 | * @param samplerate The samplerate in Hz. | |
187 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
188 | */ | |
189 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
190 | { | |
191 | if (samplerate == 0) { | |
30939770 | 192 | sr_err("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
193 | return 0xff; |
194 | } | |
195 | ||
196 | if (!is_valid_samplerate(samplerate)) { | |
30939770 UH |
197 | sr_err("la8: %s: can't get divcount, samplerate invalid", |
198 | __func__); | |
f4314d7e UH |
199 | return 0xff; |
200 | } | |
201 | ||
202 | return (SR_MHZ(100) / samplerate) - 1; | |
203 | } | |
204 | ||
205 | /** | |
206 | * Write data of a certain length to the LA8's FTDI device. | |
207 | * | |
208 | * @param la8 The LA8 struct containing private per-device-instance data. | |
209 | * @param buf The buffer containing the data to write. | |
210 | * @param size The number of bytes to write. | |
211 | * @return The number of bytes written, or a negative value upon errors. | |
212 | */ | |
213 | static int la8_write(struct la8 *la8, uint8_t *buf, int size) | |
214 | { | |
215 | int bytes_written; | |
216 | ||
217 | if (!la8) { | |
30939770 | 218 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 219 | return SR_ERR_ARG; |
f4314d7e UH |
220 | } |
221 | ||
222 | if (!la8->ftdic) { | |
30939770 | 223 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 224 | return SR_ERR_ARG; |
f4314d7e UH |
225 | } |
226 | ||
227 | if (!buf) { | |
30939770 | 228 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 229 | return SR_ERR_ARG; |
f4314d7e UH |
230 | } |
231 | ||
232 | if (size < 0) { | |
30939770 | 233 | sr_err("la8: %s: size was < 0", __func__); |
8703f512 | 234 | return SR_ERR_ARG; |
f4314d7e UH |
235 | } |
236 | ||
237 | bytes_written = ftdi_write_data(la8->ftdic, buf, size); | |
238 | ||
239 | if (bytes_written < 0) { | |
133a37bf UH |
240 | sr_err("la8: %s: ftdi_write_data: (%d) %s", __func__, |
241 | bytes_written, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
242 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
243 | } else if (bytes_written != size) { | |
133a37bf UH |
244 | sr_err("la8: %s: bytes to write: %d, bytes written: %d", |
245 | __func__, size, bytes_written); | |
f4314d7e UH |
246 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
247 | } | |
248 | ||
249 | return bytes_written; | |
250 | } | |
251 | ||
252 | /** | |
253 | * Read a certain amount of bytes from the LA8's FTDI device. | |
254 | * | |
255 | * @param la8 The LA8 struct containing private per-device-instance data. | |
256 | * @param buf The buffer where the received data will be stored. | |
257 | * @param size The number of bytes to read. | |
258 | * @return The number of bytes read, or a negative value upon errors. | |
259 | */ | |
260 | static int la8_read(struct la8 *la8, uint8_t *buf, int size) | |
261 | { | |
262 | int bytes_read; | |
263 | ||
264 | if (!la8) { | |
30939770 | 265 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 266 | return SR_ERR_ARG; |
f4314d7e UH |
267 | } |
268 | ||
269 | if (!la8->ftdic) { | |
30939770 | 270 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 271 | return SR_ERR_ARG; |
f4314d7e UH |
272 | } |
273 | ||
274 | if (!buf) { | |
30939770 | 275 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 276 | return SR_ERR_ARG; |
f4314d7e UH |
277 | } |
278 | ||
279 | if (size <= 0) { | |
30939770 | 280 | sr_err("la8: %s: size was <= 0", __func__); |
8703f512 | 281 | return SR_ERR_ARG; |
f4314d7e UH |
282 | } |
283 | ||
284 | bytes_read = ftdi_read_data(la8->ftdic, buf, size); | |
285 | ||
286 | if (bytes_read < 0) { | |
133a37bf UH |
287 | sr_err("la8: %s: ftdi_read_data: (%d) %s", __func__, |
288 | bytes_read, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 289 | } else if (bytes_read != size) { |
133a37bf UH |
290 | // sr_err("la8: %s: bytes to read: %d, bytes read: %d", |
291 | // __func__, size, bytes_read); | |
f4314d7e UH |
292 | } |
293 | ||
294 | return bytes_read; | |
295 | } | |
296 | ||
297 | static int la8_close(struct la8 *la8) | |
298 | { | |
299 | int ret; | |
300 | ||
301 | if (!la8) { | |
30939770 | 302 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 303 | return SR_ERR_ARG; |
f4314d7e UH |
304 | } |
305 | ||
306 | if (!la8->ftdic) { | |
30939770 | 307 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 308 | return SR_ERR_ARG; |
f4314d7e UH |
309 | } |
310 | ||
311 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) { | |
133a37bf UH |
312 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", |
313 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
314 | } |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
319 | /** | |
320 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
321 | * | |
322 | * @param la8 The LA8 struct containing private per-device-instance data. | |
323 | * @return SR_OK upon success, SR_ERR upon failure. | |
324 | */ | |
325 | static int la8_close_usb_reset_sequencer(struct la8 *la8) | |
326 | { | |
327 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
328 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
329 | int ret; | |
330 | ||
f4314d7e | 331 | if (!la8) { |
30939770 | 332 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 333 | return SR_ERR_ARG; |
f4314d7e UH |
334 | } |
335 | ||
336 | if (!la8->ftdic) { | |
30939770 | 337 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 338 | return SR_ERR_ARG; |
f4314d7e UH |
339 | } |
340 | ||
341 | if (la8->ftdic->usb_dev) { | |
342 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
b08024a8 | 343 | sr_dbg("la8: resetting sequencer logic"); |
f4314d7e UH |
344 | (void) la8_write(la8, buf, 8); /* Ignore errors. */ |
345 | g_usleep(100 * 1000); | |
346 | ||
347 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 348 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
349 | |
350 | /* Log errors, but ignore them (i.e., don't abort). */ | |
351 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) | |
133a37bf | 352 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
f4314d7e UH |
353 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
354 | if ((ret = ftdi_usb_reset(la8->ftdic)) < 0) | |
133a37bf UH |
355 | sr_err("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
356 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 357 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) |
133a37bf UH |
358 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
359 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
360 | } |
361 | ||
362 | ftdi_free(la8->ftdic); /* Returns void. */ | |
363 | la8->ftdic = NULL; | |
364 | ||
365 | return SR_OK; | |
366 | } | |
367 | ||
368 | /** | |
369 | * Reset the ChronoVu LA8. | |
370 | * | |
371 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
372 | * | |
373 | * @param la8 The LA8 struct containing private per-device-instance data. | |
374 | * @return SR_OK upon success, SR_ERR upon failure. | |
375 | */ | |
376 | static int la8_reset(struct la8 *la8) | |
377 | { | |
a76983fd | 378 | uint8_t buf[BS]; |
f4314d7e UH |
379 | time_t done, now; |
380 | int bytes_read; | |
381 | ||
382 | if (!la8) { | |
30939770 | 383 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 384 | return SR_ERR_ARG; |
f4314d7e UH |
385 | } |
386 | ||
387 | if (!la8->ftdic) { | |
30939770 | 388 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 389 | return SR_ERR_ARG; |
f4314d7e UH |
390 | } |
391 | ||
b08024a8 | 392 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
393 | |
394 | /* | |
395 | * Purge pending read data from the FTDI hardware FIFO until | |
396 | * no more data is left, or a timeout occurs (after 20s). | |
397 | */ | |
398 | done = 20 + time(NULL); | |
399 | do { | |
400 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
a76983fd | 401 | bytes_read = la8_read(la8, (uint8_t *)&buf, BS); |
f4314d7e UH |
402 | now = time(NULL); |
403 | } while ((done > now) && (bytes_read > 0)); | |
404 | ||
405 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
406 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ | |
407 | ||
b08024a8 | 408 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
409 | |
410 | return SR_OK; | |
411 | } | |
412 | ||
ecaf59db UH |
413 | static int configure_probes(struct la8 *la8, GSList *probes) |
414 | { | |
415 | struct sr_probe *probe; | |
416 | GSList *l; | |
417 | uint8_t probe_bit; | |
418 | char *tc; | |
419 | ||
420 | la8->trigger_pattern = 0; | |
421 | la8->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
422 | ||
423 | for (l = probes; l; l = l->next) { | |
424 | probe = (struct sr_probe *)l->data; | |
425 | ||
426 | if (!probe) { | |
427 | sr_err("la8: %s: probe was NULL", __func__); | |
428 | return SR_ERR; | |
429 | } | |
430 | ||
431 | /* Skip disabled probes. */ | |
432 | if (!probe->enabled) | |
433 | continue; | |
434 | ||
435 | /* Skip (enabled) probes with no configured trigger. */ | |
436 | if (!probe->trigger) | |
437 | continue; | |
438 | ||
439 | /* Note: Must only be run if probe->trigger != NULL. */ | |
440 | if (probe->index < 0 || probe->index > 7) { | |
441 | sr_err("la8: %s: invalid probe index %d, must be " | |
442 | "between 0 and 7", __func__, probe->index); | |
443 | return SR_ERR; | |
444 | } | |
445 | ||
446 | probe_bit = (1 << (probe->index - 1)); | |
447 | ||
448 | /* Configure the probe's trigger mask and trigger pattern. */ | |
449 | for (tc = probe->trigger; tc && *tc; tc++) { | |
450 | la8->trigger_mask |= probe_bit; | |
451 | ||
452 | /* Sanity check, LA8 only supports low/high trigger. */ | |
453 | if (*tc != '0' && *tc != '1') { | |
454 | sr_err("la8: %s: invalid trigger '%c', only " | |
455 | "'0'/'1' supported", __func__, *tc); | |
456 | return SR_ERR; | |
457 | } | |
458 | ||
459 | if (*tc == '1') | |
460 | la8->trigger_pattern |= probe_bit; | |
461 | } | |
462 | } | |
463 | ||
464 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
465 | __func__, la8->trigger_mask, la8->trigger_pattern); | |
466 | ||
467 | return SR_OK; | |
468 | } | |
469 | ||
bb7ef793 | 470 | static int hw_init(const char *devinfo) |
f4314d7e UH |
471 | { |
472 | int ret; | |
d68e2d1a | 473 | struct sr_dev_inst *sdi; |
f4314d7e UH |
474 | struct la8 *la8; |
475 | ||
f4314d7e | 476 | /* Avoid compiler errors. */ |
bb7ef793 | 477 | (void)devinfo; |
f4314d7e UH |
478 | |
479 | /* Allocate memory for our private driver context. */ | |
2e82a17b | 480 | if (!(la8 = g_try_malloc(sizeof(struct la8)))) { |
30939770 | 481 | sr_err("la8: %s: struct la8 malloc failed", __func__); |
f4314d7e UH |
482 | goto err_free_nothing; |
483 | } | |
484 | ||
485 | /* Set some sane defaults. */ | |
486 | la8->ftdic = NULL; | |
487 | la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
488 | la8->limit_msec = 0; | |
489 | la8->limit_samples = 0; | |
f4314d7e | 490 | la8->session_id = NULL; |
a76983fd | 491 | memset(la8->mangled_buf, 0, BS); |
f4314d7e UH |
492 | la8->final_buf = NULL; |
493 | la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
494 | la8->trigger_mask = 0x00; /* All probes are "don't care". */ | |
495 | la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
4d7b525a | 496 | la8->trigger_found = 0; |
f4314d7e UH |
497 | la8->done = 0; |
498 | la8->block_counter = 0; | |
499 | la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
500 | ||
f4314d7e | 501 | /* Allocate memory where we'll store the de-mangled data. */ |
2e82a17b | 502 | if (!(la8->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 503 | sr_err("la8: %s: final_buf malloc failed", __func__); |
4362438f | 504 | goto err_free_la8; |
f4314d7e UH |
505 | } |
506 | ||
507 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
508 | if (!(la8->ftdic = ftdi_new())) { | |
30939770 | 509 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
510 | goto err_free_final_buf; |
511 | } | |
512 | ||
513 | /* Check for the device and temporarily open it. */ | |
514 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
515 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
f4314d7e | 516 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
f4314d7e UH |
517 | goto err_free_ftdic; |
518 | } | |
b08024a8 | 519 | sr_dbg("la8: found device"); |
f4314d7e UH |
520 | |
521 | /* Register the device with libsigrok. */ | |
d3683c42 | 522 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, |
f4314d7e UH |
523 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); |
524 | if (!sdi) { | |
d68e2d1a | 525 | sr_err("la8: %s: sr_dev_inst_new failed", __func__); |
f4314d7e UH |
526 | goto err_close_ftdic; |
527 | } | |
528 | ||
529 | sdi->priv = la8; | |
530 | ||
d68e2d1a | 531 | dev_insts = g_slist_append(dev_insts, sdi); |
f4314d7e | 532 | |
d1175d5f | 533 | sr_spew("la8: %s finished successfully", __func__); |
f4314d7e UH |
534 | |
535 | /* Close device. We'll reopen it again when we need it. */ | |
536 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
537 | ||
f4314d7e UH |
538 | return 1; |
539 | ||
540 | err_close_ftdic: | |
541 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
542 | err_free_ftdic: | |
2e82a17b | 543 | free(la8->ftdic); /* NOT g_free()! */ |
f4314d7e | 544 | err_free_final_buf: |
2e82a17b | 545 | g_free(la8->final_buf); |
f4314d7e | 546 | err_free_la8: |
2e82a17b | 547 | g_free(la8); |
f4314d7e | 548 | err_free_nothing: |
e7bad063 | 549 | |
f4314d7e UH |
550 | return 0; |
551 | } | |
552 | ||
e7eb703f | 553 | static int hw_dev_open(int dev_index) |
f4314d7e UH |
554 | { |
555 | int ret; | |
d68e2d1a | 556 | struct sr_dev_inst *sdi; |
f4314d7e UH |
557 | struct la8 *la8; |
558 | ||
bb7ef793 | 559 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 560 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 561 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
562 | } |
563 | ||
564 | if (!(la8 = sdi->priv)) { | |
30939770 | 565 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 566 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
567 | } |
568 | ||
b08024a8 | 569 | sr_dbg("la8: opening device"); |
f4314d7e UH |
570 | |
571 | /* Open the device. */ | |
572 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
573 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
30939770 UH |
574 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
575 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
576 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
577 | return SR_ERR; | |
578 | } | |
b08024a8 | 579 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
580 | |
581 | /* Purge RX/TX buffers in the FTDI chip. */ | |
582 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) { | |
30939770 UH |
583 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
584 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 585 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
e7eb703f | 586 | goto err_dev_open_close_ftdic; |
f4314d7e | 587 | } |
b08024a8 | 588 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
589 | |
590 | /* Enable flow control in the FTDI chip. */ | |
591 | if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
30939770 UH |
592 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
593 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 594 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
e7eb703f | 595 | goto err_dev_open_close_ftdic; |
f4314d7e | 596 | } |
b08024a8 | 597 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
598 | |
599 | /* Wait 100ms. */ | |
600 | g_usleep(100 * 1000); | |
601 | ||
602 | sdi->status = SR_ST_ACTIVE; | |
603 | ||
604 | return SR_OK; | |
605 | ||
e7eb703f | 606 | err_dev_open_close_ftdic: |
f4314d7e UH |
607 | (void) la8_close(la8); /* Log, but ignore errors. */ |
608 | return SR_ERR; | |
609 | } | |
610 | ||
d68e2d1a | 611 | static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate) |
f4314d7e UH |
612 | { |
613 | struct la8 *la8; | |
614 | ||
615 | if (!sdi) { | |
30939770 | 616 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 617 | return SR_ERR_ARG; |
f4314d7e UH |
618 | } |
619 | ||
620 | if (!(la8 = sdi->priv)) { | |
30939770 | 621 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 622 | return SR_ERR_ARG; |
f4314d7e UH |
623 | } |
624 | ||
d1175d5f | 625 | sr_spew("la8: setting samplerate"); |
f4314d7e UH |
626 | |
627 | fill_supported_samplerates_if_needed(); | |
628 | ||
629 | /* Check if this is a samplerate supported by the hardware. */ | |
630 | if (!is_valid_samplerate(samplerate)) | |
631 | return SR_ERR; | |
632 | ||
633 | /* Set the new samplerate. */ | |
634 | la8->cur_samplerate = samplerate; | |
635 | ||
b08024a8 | 636 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate); |
f4314d7e UH |
637 | |
638 | return SR_OK; | |
639 | } | |
640 | ||
e7eb703f | 641 | static int hw_dev_close(int dev_index) |
f4314d7e | 642 | { |
d68e2d1a | 643 | struct sr_dev_inst *sdi; |
f4314d7e UH |
644 | struct la8 *la8; |
645 | ||
bb7ef793 | 646 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 647 | sr_err("la8: %s: sdi was NULL", __func__); |
697785d1 | 648 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
649 | } |
650 | ||
651 | if (!(la8 = sdi->priv)) { | |
30939770 | 652 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
697785d1 | 653 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
654 | } |
655 | ||
b08024a8 | 656 | sr_dbg("la8: closing device"); |
f4314d7e UH |
657 | |
658 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 659 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
697785d1 | 660 | /* TODO: Really ignore errors here, or return SR_ERR? */ |
f4314d7e UH |
661 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
662 | } else { | |
d1175d5f | 663 | sr_spew("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
664 | } |
665 | ||
666 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
667 | |
668 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
d3b1b51c | 669 | g_free(la8->final_buf); |
697785d1 UH |
670 | |
671 | return SR_OK; | |
f4314d7e UH |
672 | } |
673 | ||
57ab7d9f | 674 | static int hw_cleanup(void) |
f4314d7e UH |
675 | { |
676 | GSList *l; | |
d68e2d1a | 677 | struct sr_dev_inst *sdi; |
57ab7d9f | 678 | int ret = SR_OK; |
f4314d7e | 679 | |
f4314d7e | 680 | /* Properly close all devices. */ |
d68e2d1a | 681 | for (l = dev_insts; l; l = l->next) { |
57ab7d9f UH |
682 | if (!(sdi = l->data)) { |
683 | /* Log error, but continue cleaning up the rest. */ | |
133a37bf | 684 | sr_err("la8: %s: sdi was NULL, continuing", __func__); |
57ab7d9f | 685 | ret = SR_ERR_BUG; |
f4314d7e UH |
686 | continue; |
687 | } | |
d3683c42 | 688 | sr_dev_inst_free(sdi); /* Returns void. */ |
f4314d7e | 689 | } |
d68e2d1a UH |
690 | g_slist_free(dev_insts); /* Returns void. */ |
691 | dev_insts = NULL; | |
57ab7d9f UH |
692 | |
693 | return ret; | |
f4314d7e UH |
694 | } |
695 | ||
5097b0d0 | 696 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
f4314d7e | 697 | { |
d68e2d1a | 698 | struct sr_dev_inst *sdi; |
f4314d7e UH |
699 | struct la8 *la8; |
700 | void *info; | |
701 | ||
d1175d5f | 702 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 703 | |
bb7ef793 | 704 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 705 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
706 | return NULL; |
707 | } | |
708 | ||
709 | if (!(la8 = sdi->priv)) { | |
30939770 | 710 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
711 | return NULL; |
712 | } | |
713 | ||
bb7ef793 | 714 | switch (dev_info_id) { |
1d9a8a5f | 715 | case SR_DI_INST: |
f4314d7e UH |
716 | info = sdi; |
717 | break; | |
718 | case SR_DI_NUM_PROBES: | |
719 | info = GINT_TO_POINTER(NUM_PROBES); | |
720 | break; | |
464d12c7 KS |
721 | case SR_DI_PROBE_NAMES: |
722 | info = probe_names; | |
723 | break; | |
f4314d7e UH |
724 | case SR_DI_SAMPLERATES: |
725 | fill_supported_samplerates_if_needed(); | |
726 | info = &samplerates; | |
727 | break; | |
728 | case SR_DI_TRIGGER_TYPES: | |
729 | info = (char *)TRIGGER_TYPES; | |
730 | break; | |
731 | case SR_DI_CUR_SAMPLERATE: | |
732 | info = &la8->cur_samplerate; | |
733 | break; | |
734 | default: | |
735 | /* Unknown device info ID, return NULL. */ | |
30939770 | 736 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
737 | info = NULL; |
738 | break; | |
739 | } | |
740 | ||
741 | return info; | |
742 | } | |
743 | ||
e7eb703f | 744 | static int hw_dev_status_get(int dev_index) |
f4314d7e | 745 | { |
d68e2d1a | 746 | struct sr_dev_inst *sdi; |
f4314d7e | 747 | |
bb7ef793 | 748 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
133a37bf | 749 | sr_err("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
750 | return SR_ST_NOT_FOUND; |
751 | } | |
752 | ||
b08024a8 | 753 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
754 | |
755 | return sdi->status; | |
756 | } | |
757 | ||
ffedd0bf | 758 | static int *hw_hwcap_get_all(void) |
f4314d7e | 759 | { |
d1175d5f | 760 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 761 | |
ffedd0bf | 762 | return hwcaps; |
f4314d7e UH |
763 | } |
764 | ||
a7d05fcb | 765 | static int hw_config_set(int dev_index, int hwcap, void *value) |
f4314d7e | 766 | { |
d68e2d1a | 767 | struct sr_dev_inst *sdi; |
f4314d7e UH |
768 | struct la8 *la8; |
769 | ||
d1175d5f | 770 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 771 | |
bb7ef793 | 772 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 773 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 774 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
775 | } |
776 | ||
777 | if (!(la8 = sdi->priv)) { | |
30939770 | 778 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 779 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
780 | } |
781 | ||
ffedd0bf | 782 | switch (hwcap) { |
f4314d7e UH |
783 | case SR_HWCAP_SAMPLERATE: |
784 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
785 | return SR_ERR; | |
b08024a8 | 786 | sr_dbg("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate); |
f4314d7e UH |
787 | break; |
788 | case SR_HWCAP_PROBECONFIG: | |
ecaf59db UH |
789 | if (configure_probes(la8, (GSList *)value) != SR_OK) { |
790 | sr_err("la8: %s: probe config failed", __func__); | |
791 | return SR_ERR; | |
792 | } | |
f4314d7e UH |
793 | break; |
794 | case SR_HWCAP_LIMIT_MSEC: | |
795 | if (*(uint64_t *)value == 0) { | |
30939770 | 796 | sr_err("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
797 | return SR_ERR; |
798 | } | |
799 | la8->limit_msec = *(uint64_t *)value; | |
b08024a8 | 800 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec); |
f4314d7e UH |
801 | break; |
802 | case SR_HWCAP_LIMIT_SAMPLES: | |
803 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
30939770 | 804 | sr_err("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
805 | return SR_ERR; |
806 | } | |
807 | la8->limit_samples = *(uint64_t *)value; | |
b08024a8 | 808 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples); |
f4314d7e UH |
809 | break; |
810 | default: | |
811 | /* Unknown capability, return SR_ERR. */ | |
30939770 | 812 | sr_err("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
813 | return SR_ERR; |
814 | break; | |
815 | } | |
816 | ||
817 | return SR_OK; | |
818 | } | |
819 | ||
820 | /** | |
a76983fd | 821 | * Get a block of data from the LA8. |
f4314d7e UH |
822 | * |
823 | * @param la8 The LA8 struct containing private per-device-instance data. | |
824 | * @return SR_OK upon success, or SR_ERR upon errors. | |
825 | */ | |
826 | static int la8_read_block(struct la8 *la8) | |
827 | { | |
828 | int i, byte_offset, m, mi, p, index, bytes_read; | |
829 | time_t now; | |
830 | ||
831 | if (!la8) { | |
30939770 | 832 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 833 | return SR_ERR_ARG; |
f4314d7e UH |
834 | } |
835 | ||
836 | if (!la8->ftdic) { | |
30939770 | 837 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 838 | return SR_ERR_ARG; |
f4314d7e UH |
839 | } |
840 | ||
d1175d5f | 841 | sr_spew("la8: %s: reading block %d", __func__, la8->block_counter); |
f4314d7e | 842 | |
a76983fd | 843 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
844 | |
845 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
846 | if ((bytes_read == 0) && (la8->block_counter == 0)) { | |
847 | do { | |
d1175d5f | 848 | sr_spew("la8: %s: reading block 0 again", __func__); |
a76983fd | 849 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
850 | /* TODO: How to handle read errors here? */ |
851 | now = time(NULL); | |
852 | } while ((la8->done > now) && (bytes_read == 0)); | |
853 | } | |
854 | ||
855 | /* Check if block read was successful or a timeout occured. */ | |
a76983fd | 856 | if (bytes_read != BS) { |
133a37bf | 857 | sr_err("la8: %s: trigger timed out", __func__); |
f4314d7e UH |
858 | (void) la8_reset(la8); /* Ignore errors. */ |
859 | return SR_ERR; | |
860 | } | |
861 | ||
862 | /* De-mangle the data. */ | |
d1175d5f | 863 | sr_spew("la8: de-mangling samples of block %d", la8->block_counter); |
a76983fd | 864 | byte_offset = la8->block_counter * BS; |
f4314d7e UH |
865 | m = byte_offset / (1024 * 1024); |
866 | mi = m * (1024 * 1024); | |
a76983fd | 867 | for (i = 0; i < BS; i++) { |
f4314d7e UH |
868 | p = i & (1 << 0); |
869 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
870 | index += (la8->divcount == 0) ? p : (1 - p); | |
871 | la8->final_buf[index] = la8->mangled_buf[i]; | |
872 | } | |
873 | ||
874 | return SR_OK; | |
875 | } | |
876 | ||
4d7b525a UH |
877 | static void send_block_to_session_bus(struct la8 *la8, int block) |
878 | { | |
879 | int i; | |
880 | uint8_t sample, expected_sample; | |
881 | struct sr_datafeed_packet packet; | |
9c939c51 | 882 | struct sr_datafeed_logic logic; |
4d7b525a UH |
883 | int trigger_point; /* Relative trigger point (in this block). */ |
884 | ||
885 | /* Note: No sanity checks on la8/block, caller is responsible. */ | |
886 | ||
887 | /* Check if we can find the trigger condition in this block. */ | |
888 | trigger_point = -1; | |
889 | expected_sample = la8->trigger_pattern & la8->trigger_mask; | |
a76983fd | 890 | for (i = 0; i < BS; i++) { |
4d7b525a UH |
891 | /* Don't continue if the trigger was found previously. */ |
892 | if (la8->trigger_found) | |
893 | break; | |
894 | ||
f36cbf60 UH |
895 | /* |
896 | * Also, don't continue if triggers are "don't care", i.e. if | |
897 | * no trigger conditions were specified by the user. In that | |
898 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
899 | */ | |
900 | if (la8->trigger_mask == 0x00) | |
901 | break; | |
902 | ||
a76983fd | 903 | sample = *(la8->final_buf + (block * BS) + i); |
4d7b525a UH |
904 | |
905 | if ((sample & la8->trigger_mask) == expected_sample) { | |
906 | trigger_point = i; | |
907 | la8->trigger_found = 1; | |
908 | break; | |
909 | } | |
910 | } | |
911 | ||
912 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
913 | if (trigger_point == -1) { | |
a76983fd | 914 | /* Send an SR_DF_LOGIC packet to the session bus. */ |
d1175d5f UH |
915 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " |
916 | "block %d", BS, block); | |
4d7b525a | 917 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
918 | packet.payload = &logic; |
919 | logic.length = BS; | |
920 | logic.unitsize = 1; | |
921 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
922 | sr_session_bus(la8->session_id, &packet); |
923 | return; | |
924 | } | |
925 | ||
926 | /* | |
927 | * We found the trigger, so some special handling is needed. We have | |
928 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
929 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
930 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
931 | */ | |
932 | ||
933 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
934 | ||
935 | /* If at least one sample is located before the trigger... */ | |
936 | if (trigger_point > 0) { | |
937 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
d1175d5f | 938 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " |
f36cbf60 | 939 | "start = %d, length = %d", block * BS, trigger_point); |
4d7b525a | 940 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
941 | packet.payload = &logic; |
942 | logic.length = trigger_point; | |
943 | logic.unitsize = 1; | |
944 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
945 | sr_session_bus(la8->session_id, &packet); |
946 | } | |
947 | ||
948 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
d1175d5f | 949 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", |
f36cbf60 | 950 | (block * BS) + trigger_point); |
4d7b525a | 951 | packet.type = SR_DF_TRIGGER; |
4d7b525a UH |
952 | packet.payload = NULL; |
953 | sr_session_bus(la8->session_id, &packet); | |
954 | ||
955 | /* If at least one sample is located after the trigger... */ | |
a76983fd | 956 | if (trigger_point < (BS - 1)) { |
4d7b525a | 957 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ |
d1175d5f | 958 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " |
896a19fd | 959 | "start = %d, length = %d", |
f36cbf60 | 960 | (block * BS) + trigger_point, BS - trigger_point); |
4d7b525a | 961 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
962 | packet.payload = &logic; |
963 | logic.length = BS - trigger_point; | |
964 | logic.unitsize = 1; | |
965 | logic.data = la8->final_buf + (block * BS) + trigger_point; | |
4d7b525a UH |
966 | sr_session_bus(la8->session_id, &packet); |
967 | } | |
968 | } | |
969 | ||
9c939c51 | 970 | static int receive_data(int fd, int revents, void *session_data) |
f4314d7e UH |
971 | { |
972 | int i, ret; | |
d68e2d1a | 973 | struct sr_dev_inst *sdi; |
f4314d7e UH |
974 | struct la8 *la8; |
975 | ||
976 | /* Avoid compiler errors. */ | |
cb93f8a9 UH |
977 | (void)fd; |
978 | (void)revents; | |
f4314d7e | 979 | |
9c939c51 | 980 | if (!(sdi = session_data)) { |
ae32d7d7 | 981 | sr_err("la8: %s: session_data was NULL", __func__); |
f4314d7e UH |
982 | return FALSE; |
983 | } | |
984 | ||
985 | if (!(la8 = sdi->priv)) { | |
30939770 | 986 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
987 | return FALSE; |
988 | } | |
989 | ||
a76983fd | 990 | /* Get one block of data. */ |
f4314d7e | 991 | if ((ret = la8_read_block(la8)) < 0) { |
30939770 | 992 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
8105505d | 993 | hw_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
994 | return FALSE; |
995 | } | |
996 | ||
a76983fd UH |
997 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ |
998 | if (la8->block_counter != (NUM_BLOCKS - 1)) { | |
f4314d7e UH |
999 | la8->block_counter++; |
1000 | return TRUE; | |
1001 | } | |
1002 | ||
b08024a8 | 1003 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
1004 | |
1005 | /* All data was received and demangled, send it to the session bus. */ | |
a76983fd | 1006 | for (i = 0; i < NUM_BLOCKS; i++) |
4d7b525a | 1007 | send_block_to_session_bus(la8, i); |
f4314d7e | 1008 | |
8105505d | 1009 | hw_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
1010 | |
1011 | // return FALSE; /* FIXME? */ | |
1012 | return TRUE; | |
1013 | } | |
1014 | ||
8105505d | 1015 | static int hw_acquisition_start(int dev_index, gpointer session_data) |
f4314d7e | 1016 | { |
d68e2d1a | 1017 | struct sr_dev_inst *sdi; |
f4314d7e UH |
1018 | struct la8 *la8; |
1019 | struct sr_datafeed_packet packet; | |
1020 | struct sr_datafeed_header header; | |
1021 | uint8_t buf[4]; | |
1022 | int bytes_written; | |
1023 | ||
d1175d5f | 1024 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 1025 | |
bb7ef793 | 1026 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1027 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 1028 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1029 | } |
1030 | ||
1031 | if (!(la8 = sdi->priv)) { | |
30939770 | 1032 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 1033 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1034 | } |
1035 | ||
1036 | if (!la8->ftdic) { | |
30939770 | 1037 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 1038 | return SR_ERR_ARG; |
f4314d7e UH |
1039 | } |
1040 | ||
1041 | la8->divcount = samplerate_to_divcount(la8->cur_samplerate); | |
1042 | if (la8->divcount == 0xff) { | |
30939770 | 1043 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
1044 | return SR_ERR; |
1045 | } | |
1046 | ||
1047 | /* Fill acquisition parameters into buf[]. */ | |
1048 | buf[0] = la8->divcount; | |
1049 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
1050 | buf[2] = la8->trigger_pattern; | |
1051 | buf[3] = la8->trigger_mask; | |
1052 | ||
1053 | /* Start acquisition. */ | |
1054 | bytes_written = la8_write(la8, buf, 4); | |
1055 | ||
1056 | if (bytes_written < 0) { | |
30939770 | 1057 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1058 | return SR_ERR; |
1059 | } else if (bytes_written != 4) { | |
30939770 | 1060 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1061 | return SR_ERR; /* TODO: Other error and return code? */ |
1062 | } | |
1063 | ||
b08024a8 | 1064 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e | 1065 | |
9c939c51 | 1066 | la8->session_id = session_data; |
f4314d7e UH |
1067 | |
1068 | /* Send header packet to the session bus. */ | |
b08024a8 | 1069 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e | 1070 | packet.type = SR_DF_HEADER; |
f4314d7e UH |
1071 | packet.payload = &header; |
1072 | header.feed_version = 1; | |
1073 | gettimeofday(&header.starttime, NULL); | |
1074 | header.samplerate = la8->cur_samplerate; | |
4bc5fd45 | 1075 | header.num_logic_probes = NUM_PROBES; |
9c939c51 | 1076 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1077 | |
1078 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1079 | la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL) | |
1080 | + la8->trigger_timeout; | |
1081 | la8->block_counter = 0; | |
4d7b525a | 1082 | la8->trigger_found = 0; |
f4314d7e UH |
1083 | |
1084 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1085 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1086 | ||
1087 | return SR_OK; | |
1088 | } | |
1089 | ||
8105505d | 1090 | static int hw_acquisition_stop(int dev_index, gpointer session_data) |
f4314d7e | 1091 | { |
d68e2d1a | 1092 | struct sr_dev_inst *sdi; |
f4314d7e UH |
1093 | struct la8 *la8; |
1094 | struct sr_datafeed_packet packet; | |
1095 | ||
b08024a8 | 1096 | sr_dbg("la8: stopping acquisition"); |
f4314d7e | 1097 | |
bb7ef793 | 1098 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1099 | sr_err("la8: %s: sdi was NULL", __func__); |
3010f21c | 1100 | return SR_ERR_BUG; |
f4314d7e UH |
1101 | } |
1102 | ||
1103 | if (!(la8 = sdi->priv)) { | |
30939770 | 1104 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
3010f21c | 1105 | return SR_ERR_BUG; |
f4314d7e UH |
1106 | } |
1107 | ||
f4314d7e | 1108 | /* Send end packet to the session bus. */ |
b08024a8 | 1109 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e | 1110 | packet.type = SR_DF_END; |
9c939c51 | 1111 | sr_session_bus(session_data, &packet); |
3010f21c UH |
1112 | |
1113 | return SR_OK; | |
f4314d7e UH |
1114 | } |
1115 | ||
bb7ef793 | 1116 | SR_PRIV struct sr_dev_plugin chronovu_la8_plugin_info = { |
f4314d7e UH |
1117 | .name = "chronovu-la8", |
1118 | .longname = "ChronoVu LA8", | |
1119 | .api_version = 1, | |
1120 | .init = hw_init, | |
1121 | .cleanup = hw_cleanup, | |
e7eb703f UH |
1122 | .dev_open = hw_dev_open, |
1123 | .dev_close = hw_dev_close, | |
5097b0d0 | 1124 | .dev_info_get = hw_dev_info_get, |
e7eb703f | 1125 | .dev_status_get = hw_dev_status_get, |
ffedd0bf | 1126 | .hwcap_get_all = hw_hwcap_get_all, |
a7d05fcb | 1127 | .config_set = hw_config_set, |
8105505d UH |
1128 | .acquisition_start = hw_acquisition_start, |
1129 | .acquisition_stop = hw_acquisition_stop, | |
f4314d7e | 1130 | }; |