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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> |
b7f09cf8 UH |
24 | #include "sigrok.h" |
25 | #include "sigrok-internal.h" | |
f4314d7e UH |
26 | |
27 | #define USB_VENDOR_ID 0x0403 | |
28 | #define USB_PRODUCT_ID 0x6001 | |
29 | #define USB_DESCRIPTION "ChronoVu LA8" | |
30 | #define USB_VENDOR_NAME "ChronoVu" | |
31 | #define USB_MODEL_NAME "LA8" | |
32 | #define USB_MODEL_VERSION "" | |
33 | ||
34 | #define NUM_PROBES 8 | |
35 | #define TRIGGER_TYPES "01" | |
36 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
37 | #define MIN_NUM_SAMPLES 1 | |
38 | ||
a76983fd UH |
39 | #define BS 4096 /* Block size */ |
40 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
41 | ||
f4314d7e UH |
42 | static GSList *device_instances = NULL; |
43 | ||
464d12c7 KS |
44 | static const char* probe_names[NUM_PROBES + 1] = { |
45 | "0", | |
46 | "1", | |
47 | "2", | |
48 | "3", | |
49 | "4", | |
50 | "5", | |
51 | "6", | |
52 | "7", | |
53 | NULL, | |
54 | }; | |
55 | ||
f4314d7e UH |
56 | struct la8 { |
57 | /** FTDI device context (used by libftdi). */ | |
58 | struct ftdi_context *ftdic; | |
59 | ||
60 | /** The currently configured samplerate of the device. */ | |
61 | uint64_t cur_samplerate; | |
62 | ||
9c939c51 BV |
63 | /** period in picoseconds corresponding to the samplerate */ |
64 | uint64_t period_ps; | |
65 | ||
f4314d7e UH |
66 | /** The current sampling limit (in ms). */ |
67 | uint64_t limit_msec; | |
68 | ||
69 | /** The current sampling limit (in number of samples). */ | |
70 | uint64_t limit_samples; | |
71 | ||
f4314d7e UH |
72 | /** TODO */ |
73 | gpointer session_id; | |
74 | ||
75 | /** | |
a76983fd | 76 | * A buffer containing some (mangled) samples from the device. |
f4314d7e UH |
77 | * Format: Pretty mangled-up (due to hardware reasons), see code. |
78 | */ | |
a76983fd | 79 | uint8_t mangled_buf[BS]; |
f4314d7e UH |
80 | |
81 | /** | |
82 | * An 8MB buffer where we'll store the de-mangled samples. | |
83 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
84 | */ | |
85 | uint8_t *final_buf; | |
86 | ||
87 | /** | |
88 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
89 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
90 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
91 | */ | |
92 | uint8_t trigger_pattern; | |
93 | ||
94 | /** | |
95 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
96 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
97 | */ | |
98 | uint8_t trigger_mask; | |
99 | ||
100 | /** Time (in seconds) before the trigger times out. */ | |
101 | uint64_t trigger_timeout; | |
102 | ||
4d7b525a UH |
103 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ |
104 | int trigger_found; | |
105 | ||
f4314d7e UH |
106 | /** TODO */ |
107 | time_t done; | |
108 | ||
a76983fd | 109 | /** Counter/index for the data block to be read. */ |
f4314d7e UH |
110 | int block_counter; |
111 | ||
112 | /** The divcount value (determines the sample period) for the LA8. */ | |
113 | uint8_t divcount; | |
114 | }; | |
115 | ||
116 | /* This will be initialized via hw_get_device_info()/SR_DI_SAMPLERATES. */ | |
117 | static uint64_t supported_samplerates[255 + 1] = { 0 }; | |
118 | ||
119 | /* | |
120 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
121 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
122 | */ | |
123 | static struct sr_samplerates samplerates = { | |
124 | .low = 0, | |
125 | .high = 0, | |
126 | .step = 0, | |
127 | .list = supported_samplerates, | |
128 | }; | |
129 | ||
130 | /* Note: Continuous sampling is not supported by the hardware. */ | |
131 | static int capabilities[] = { | |
132 | SR_HWCAP_LOGIC_ANALYZER, | |
133 | SR_HWCAP_SAMPLERATE, | |
134 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
135 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
136 | 0, | |
137 | }; | |
138 | ||
139 | /* Function prototypes. */ | |
140 | static int la8_close_usb_reset_sequencer(struct la8 *la8); | |
9c939c51 | 141 | static void hw_stop_acquisition(int device_index, gpointer session_data); |
f4314d7e UH |
142 | static int la8_reset(struct la8 *la8); |
143 | ||
144 | static void fill_supported_samplerates_if_needed(void) | |
145 | { | |
146 | int i; | |
147 | ||
148 | /* Do nothing if supported_samplerates[] is already filled. */ | |
149 | if (supported_samplerates[0] != 0) | |
150 | return; | |
151 | ||
152 | /* Fill supported_samplerates[] with the proper values. */ | |
153 | for (i = 0; i < 255; i++) | |
154 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
155 | supported_samplerates[255] = 0; | |
156 | } | |
157 | ||
158 | /** | |
159 | * Check if the given samplerate is supported by the LA8 hardware. | |
160 | * | |
161 | * @param samplerate The samplerate (in Hz) to check. | |
162 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
163 | */ | |
164 | static int is_valid_samplerate(uint64_t samplerate) | |
165 | { | |
166 | int i; | |
167 | ||
168 | fill_supported_samplerates_if_needed(); | |
169 | ||
170 | for (i = 0; i < 255; i++) { | |
171 | if (supported_samplerates[i] == samplerate) | |
172 | return 1; | |
173 | } | |
174 | ||
b08024a8 UH |
175 | sr_warn("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
176 | __func__, samplerate); | |
f4314d7e UH |
177 | |
178 | return 0; | |
179 | } | |
180 | ||
181 | /** | |
182 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
183 | * | |
184 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
185 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
186 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
187 | * | |
188 | * @param samplerate The samplerate in Hz. | |
189 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
190 | */ | |
191 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
192 | { | |
193 | if (samplerate == 0) { | |
30939770 | 194 | sr_err("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
195 | return 0xff; |
196 | } | |
197 | ||
198 | if (!is_valid_samplerate(samplerate)) { | |
30939770 UH |
199 | sr_err("la8: %s: can't get divcount, samplerate invalid", |
200 | __func__); | |
f4314d7e UH |
201 | return 0xff; |
202 | } | |
203 | ||
204 | return (SR_MHZ(100) / samplerate) - 1; | |
205 | } | |
206 | ||
207 | /** | |
208 | * Write data of a certain length to the LA8's FTDI device. | |
209 | * | |
210 | * @param la8 The LA8 struct containing private per-device-instance data. | |
211 | * @param buf The buffer containing the data to write. | |
212 | * @param size The number of bytes to write. | |
213 | * @return The number of bytes written, or a negative value upon errors. | |
214 | */ | |
215 | static int la8_write(struct la8 *la8, uint8_t *buf, int size) | |
216 | { | |
217 | int bytes_written; | |
218 | ||
219 | if (!la8) { | |
30939770 | 220 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 221 | return SR_ERR_ARG; |
f4314d7e UH |
222 | } |
223 | ||
224 | if (!la8->ftdic) { | |
30939770 | 225 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 226 | return SR_ERR_ARG; |
f4314d7e UH |
227 | } |
228 | ||
229 | if (!buf) { | |
30939770 | 230 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 231 | return SR_ERR_ARG; |
f4314d7e UH |
232 | } |
233 | ||
234 | if (size < 0) { | |
30939770 | 235 | sr_err("la8: %s: size was < 0", __func__); |
8703f512 | 236 | return SR_ERR_ARG; |
f4314d7e UH |
237 | } |
238 | ||
239 | bytes_written = ftdi_write_data(la8->ftdic, buf, size); | |
240 | ||
241 | if (bytes_written < 0) { | |
b08024a8 UH |
242 | sr_warn("la8: %s: ftdi_write_data: (%d) %s", __func__, |
243 | bytes_written, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
244 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
245 | } else if (bytes_written != size) { | |
b08024a8 UH |
246 | sr_warn("la8: %s: bytes to write: %d, bytes written: %d", |
247 | __func__, size, bytes_written); | |
f4314d7e UH |
248 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
249 | } | |
250 | ||
251 | return bytes_written; | |
252 | } | |
253 | ||
254 | /** | |
255 | * Read a certain amount of bytes from the LA8's FTDI device. | |
256 | * | |
257 | * @param la8 The LA8 struct containing private per-device-instance data. | |
258 | * @param buf The buffer where the received data will be stored. | |
259 | * @param size The number of bytes to read. | |
260 | * @return The number of bytes read, or a negative value upon errors. | |
261 | */ | |
262 | static int la8_read(struct la8 *la8, uint8_t *buf, int size) | |
263 | { | |
264 | int bytes_read; | |
265 | ||
266 | if (!la8) { | |
30939770 | 267 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 268 | return SR_ERR_ARG; |
f4314d7e UH |
269 | } |
270 | ||
271 | if (!la8->ftdic) { | |
30939770 | 272 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 273 | return SR_ERR_ARG; |
f4314d7e UH |
274 | } |
275 | ||
276 | if (!buf) { | |
30939770 | 277 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 278 | return SR_ERR_ARG; |
f4314d7e UH |
279 | } |
280 | ||
281 | if (size <= 0) { | |
30939770 | 282 | sr_err("la8: %s: size was <= 0", __func__); |
8703f512 | 283 | return SR_ERR_ARG; |
f4314d7e UH |
284 | } |
285 | ||
286 | bytes_read = ftdi_read_data(la8->ftdic, buf, size); | |
287 | ||
288 | if (bytes_read < 0) { | |
b08024a8 UH |
289 | sr_warn("la8: %s: ftdi_read_data: (%d) %s", __func__, |
290 | bytes_read, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 291 | } else if (bytes_read != size) { |
b08024a8 UH |
292 | // sr_warn("la8: %s: bytes to read: %d, bytes read: %d", |
293 | // __func__, size, bytes_read); | |
f4314d7e UH |
294 | } |
295 | ||
296 | return bytes_read; | |
297 | } | |
298 | ||
299 | static int la8_close(struct la8 *la8) | |
300 | { | |
301 | int ret; | |
302 | ||
303 | if (!la8) { | |
30939770 | 304 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 305 | return SR_ERR_ARG; |
f4314d7e UH |
306 | } |
307 | ||
308 | if (!la8->ftdic) { | |
30939770 | 309 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 310 | return SR_ERR_ARG; |
f4314d7e UH |
311 | } |
312 | ||
313 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) { | |
b08024a8 UH |
314 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", |
315 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
316 | } |
317 | ||
318 | return ret; | |
319 | } | |
320 | ||
321 | /** | |
322 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
323 | * | |
324 | * @param la8 The LA8 struct containing private per-device-instance data. | |
325 | * @return SR_OK upon success, SR_ERR upon failure. | |
326 | */ | |
327 | static int la8_close_usb_reset_sequencer(struct la8 *la8) | |
328 | { | |
329 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
330 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
331 | int ret; | |
332 | ||
d1175d5f | 333 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
334 | |
335 | if (!la8) { | |
30939770 | 336 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 337 | return SR_ERR_ARG; |
f4314d7e UH |
338 | } |
339 | ||
340 | if (!la8->ftdic) { | |
30939770 | 341 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 342 | return SR_ERR_ARG; |
f4314d7e UH |
343 | } |
344 | ||
345 | if (la8->ftdic->usb_dev) { | |
346 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
b08024a8 | 347 | sr_dbg("la8: resetting sequencer logic"); |
f4314d7e UH |
348 | (void) la8_write(la8, buf, 8); /* Ignore errors. */ |
349 | g_usleep(100 * 1000); | |
350 | ||
351 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 352 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
353 | |
354 | /* Log errors, but ignore them (i.e., don't abort). */ | |
355 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) | |
b08024a8 | 356 | sr_warn("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
f4314d7e UH |
357 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
358 | if ((ret = ftdi_usb_reset(la8->ftdic)) < 0) | |
b08024a8 UH |
359 | sr_warn("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
360 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 361 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) |
b08024a8 UH |
362 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
363 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 364 | } else { |
d1175d5f | 365 | sr_spew("la8: %s: usb_dev was NULL, nothing to do", __func__); |
f4314d7e UH |
366 | } |
367 | ||
368 | ftdi_free(la8->ftdic); /* Returns void. */ | |
369 | la8->ftdic = NULL; | |
370 | ||
371 | return SR_OK; | |
372 | } | |
373 | ||
374 | /** | |
375 | * Reset the ChronoVu LA8. | |
376 | * | |
377 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
378 | * | |
379 | * @param la8 The LA8 struct containing private per-device-instance data. | |
380 | * @return SR_OK upon success, SR_ERR upon failure. | |
381 | */ | |
382 | static int la8_reset(struct la8 *la8) | |
383 | { | |
a76983fd | 384 | uint8_t buf[BS]; |
f4314d7e UH |
385 | time_t done, now; |
386 | int bytes_read; | |
387 | ||
388 | if (!la8) { | |
30939770 | 389 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 390 | return SR_ERR_ARG; |
f4314d7e UH |
391 | } |
392 | ||
393 | if (!la8->ftdic) { | |
30939770 | 394 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 395 | return SR_ERR_ARG; |
f4314d7e UH |
396 | } |
397 | ||
b08024a8 | 398 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
399 | |
400 | /* | |
401 | * Purge pending read data from the FTDI hardware FIFO until | |
402 | * no more data is left, or a timeout occurs (after 20s). | |
403 | */ | |
404 | done = 20 + time(NULL); | |
405 | do { | |
406 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
a76983fd | 407 | bytes_read = la8_read(la8, (uint8_t *)&buf, BS); |
f4314d7e UH |
408 | now = time(NULL); |
409 | } while ((done > now) && (bytes_read > 0)); | |
410 | ||
411 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
412 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ | |
413 | ||
b08024a8 | 414 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
415 | |
416 | return SR_OK; | |
417 | } | |
418 | ||
ecaf59db UH |
419 | static int configure_probes(struct la8 *la8, GSList *probes) |
420 | { | |
421 | struct sr_probe *probe; | |
422 | GSList *l; | |
423 | uint8_t probe_bit; | |
424 | char *tc; | |
425 | ||
426 | la8->trigger_pattern = 0; | |
427 | la8->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
428 | ||
429 | for (l = probes; l; l = l->next) { | |
430 | probe = (struct sr_probe *)l->data; | |
431 | ||
432 | if (!probe) { | |
433 | sr_err("la8: %s: probe was NULL", __func__); | |
434 | return SR_ERR; | |
435 | } | |
436 | ||
437 | /* Skip disabled probes. */ | |
438 | if (!probe->enabled) | |
439 | continue; | |
440 | ||
441 | /* Skip (enabled) probes with no configured trigger. */ | |
442 | if (!probe->trigger) | |
443 | continue; | |
444 | ||
445 | /* Note: Must only be run if probe->trigger != NULL. */ | |
446 | if (probe->index < 0 || probe->index > 7) { | |
447 | sr_err("la8: %s: invalid probe index %d, must be " | |
448 | "between 0 and 7", __func__, probe->index); | |
449 | return SR_ERR; | |
450 | } | |
451 | ||
452 | probe_bit = (1 << (probe->index - 1)); | |
453 | ||
454 | /* Configure the probe's trigger mask and trigger pattern. */ | |
455 | for (tc = probe->trigger; tc && *tc; tc++) { | |
456 | la8->trigger_mask |= probe_bit; | |
457 | ||
458 | /* Sanity check, LA8 only supports low/high trigger. */ | |
459 | if (*tc != '0' && *tc != '1') { | |
460 | sr_err("la8: %s: invalid trigger '%c', only " | |
461 | "'0'/'1' supported", __func__, *tc); | |
462 | return SR_ERR; | |
463 | } | |
464 | ||
465 | if (*tc == '1') | |
466 | la8->trigger_pattern |= probe_bit; | |
467 | } | |
468 | } | |
469 | ||
470 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
471 | __func__, la8->trigger_mask, la8->trigger_pattern); | |
472 | ||
473 | return SR_OK; | |
474 | } | |
475 | ||
f4314d7e UH |
476 | static int hw_init(const char *deviceinfo) |
477 | { | |
478 | int ret; | |
479 | struct sr_device_instance *sdi; | |
480 | struct la8 *la8; | |
481 | ||
d1175d5f | 482 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
483 | |
484 | /* Avoid compiler errors. */ | |
cb93f8a9 | 485 | (void)deviceinfo; |
f4314d7e UH |
486 | |
487 | /* Allocate memory for our private driver context. */ | |
2e82a17b | 488 | if (!(la8 = g_try_malloc(sizeof(struct la8)))) { |
30939770 | 489 | sr_err("la8: %s: struct la8 malloc failed", __func__); |
f4314d7e UH |
490 | goto err_free_nothing; |
491 | } | |
492 | ||
493 | /* Set some sane defaults. */ | |
494 | la8->ftdic = NULL; | |
495 | la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
9c939c51 | 496 | la8->period_ps = 10000; |
f4314d7e UH |
497 | la8->limit_msec = 0; |
498 | la8->limit_samples = 0; | |
f4314d7e | 499 | la8->session_id = NULL; |
a76983fd | 500 | memset(la8->mangled_buf, 0, BS); |
f4314d7e UH |
501 | la8->final_buf = NULL; |
502 | la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
503 | la8->trigger_mask = 0x00; /* All probes are "don't care". */ | |
504 | la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
4d7b525a | 505 | la8->trigger_found = 0; |
f4314d7e UH |
506 | la8->done = 0; |
507 | la8->block_counter = 0; | |
508 | la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
509 | ||
f4314d7e | 510 | /* Allocate memory where we'll store the de-mangled data. */ |
2e82a17b | 511 | if (!(la8->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 512 | sr_err("la8: %s: final_buf malloc failed", __func__); |
4362438f | 513 | goto err_free_la8; |
f4314d7e UH |
514 | } |
515 | ||
516 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
517 | if (!(la8->ftdic = ftdi_new())) { | |
30939770 | 518 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
519 | goto err_free_final_buf; |
520 | } | |
521 | ||
522 | /* Check for the device and temporarily open it. */ | |
523 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
524 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
e7bad063 | 525 | sr_dbg("la8: %s: ftdi_usb_open_desc: (%d) %s", |
30939770 | 526 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
f4314d7e | 527 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
f4314d7e UH |
528 | goto err_free_ftdic; |
529 | } | |
b08024a8 | 530 | sr_dbg("la8: found device"); |
f4314d7e UH |
531 | |
532 | /* Register the device with libsigrok. */ | |
533 | sdi = sr_device_instance_new(0, SR_ST_INITIALIZING, | |
534 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
535 | if (!sdi) { | |
30939770 | 536 | sr_err("la8: %s: sr_device_instance_new failed", __func__); |
f4314d7e UH |
537 | goto err_close_ftdic; |
538 | } | |
539 | ||
540 | sdi->priv = la8; | |
541 | ||
542 | device_instances = g_slist_append(device_instances, sdi); | |
543 | ||
d1175d5f | 544 | sr_spew("la8: %s finished successfully", __func__); |
f4314d7e UH |
545 | |
546 | /* Close device. We'll reopen it again when we need it. */ | |
547 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
548 | ||
f4314d7e UH |
549 | return 1; |
550 | ||
551 | err_close_ftdic: | |
552 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
553 | err_free_ftdic: | |
2e82a17b | 554 | free(la8->ftdic); /* NOT g_free()! */ |
f4314d7e | 555 | err_free_final_buf: |
2e82a17b | 556 | g_free(la8->final_buf); |
f4314d7e | 557 | err_free_la8: |
2e82a17b | 558 | g_free(la8); |
f4314d7e | 559 | err_free_nothing: |
e7bad063 | 560 | |
f4314d7e UH |
561 | return 0; |
562 | } | |
563 | ||
564 | static int hw_opendev(int device_index) | |
565 | { | |
566 | int ret; | |
567 | struct sr_device_instance *sdi; | |
568 | struct la8 *la8; | |
569 | ||
570 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 571 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 572 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
573 | } |
574 | ||
575 | if (!(la8 = sdi->priv)) { | |
30939770 | 576 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 577 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
578 | } |
579 | ||
b08024a8 | 580 | sr_dbg("la8: opening device"); |
f4314d7e UH |
581 | |
582 | /* Open the device. */ | |
583 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
584 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
30939770 UH |
585 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
586 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
587 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
588 | return SR_ERR; | |
589 | } | |
b08024a8 | 590 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
591 | |
592 | /* Purge RX/TX buffers in the FTDI chip. */ | |
593 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) { | |
30939770 UH |
594 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
595 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
596 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
597 | goto err_opendev_close_ftdic; | |
598 | } | |
b08024a8 | 599 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
600 | |
601 | /* Enable flow control in the FTDI chip. */ | |
602 | if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
30939770 UH |
603 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
604 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
605 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
606 | goto err_opendev_close_ftdic; | |
607 | } | |
b08024a8 | 608 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
609 | |
610 | /* Wait 100ms. */ | |
611 | g_usleep(100 * 1000); | |
612 | ||
613 | sdi->status = SR_ST_ACTIVE; | |
614 | ||
615 | return SR_OK; | |
616 | ||
617 | err_opendev_close_ftdic: | |
618 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
619 | return SR_ERR; | |
620 | } | |
621 | ||
622 | static int set_samplerate(struct sr_device_instance *sdi, uint64_t samplerate) | |
623 | { | |
624 | struct la8 *la8; | |
625 | ||
626 | if (!sdi) { | |
30939770 | 627 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 628 | return SR_ERR_ARG; |
f4314d7e UH |
629 | } |
630 | ||
631 | if (!(la8 = sdi->priv)) { | |
30939770 | 632 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 633 | return SR_ERR_ARG; |
f4314d7e UH |
634 | } |
635 | ||
d1175d5f | 636 | sr_spew("la8: setting samplerate"); |
f4314d7e UH |
637 | |
638 | fill_supported_samplerates_if_needed(); | |
639 | ||
640 | /* Check if this is a samplerate supported by the hardware. */ | |
641 | if (!is_valid_samplerate(samplerate)) | |
642 | return SR_ERR; | |
643 | ||
644 | /* Set the new samplerate. */ | |
645 | la8->cur_samplerate = samplerate; | |
9c939c51 | 646 | la8->period_ps = 1000000000000 / samplerate; |
f4314d7e | 647 | |
b08024a8 | 648 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate); |
f4314d7e UH |
649 | |
650 | return SR_OK; | |
651 | } | |
652 | ||
697785d1 | 653 | static int hw_closedev(int device_index) |
f4314d7e UH |
654 | { |
655 | struct sr_device_instance *sdi; | |
656 | struct la8 *la8; | |
657 | ||
658 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 659 | sr_err("la8: %s: sdi was NULL", __func__); |
697785d1 | 660 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
661 | } |
662 | ||
663 | if (!(la8 = sdi->priv)) { | |
30939770 | 664 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
697785d1 | 665 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
666 | } |
667 | ||
b08024a8 | 668 | sr_dbg("la8: closing device"); |
f4314d7e UH |
669 | |
670 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 671 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
697785d1 | 672 | /* TODO: Really ignore errors here, or return SR_ERR? */ |
f4314d7e UH |
673 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
674 | } else { | |
d1175d5f | 675 | sr_spew("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
676 | } |
677 | ||
678 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
679 | |
680 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
d3b1b51c | 681 | g_free(la8->final_buf); |
697785d1 UH |
682 | |
683 | return SR_OK; | |
f4314d7e UH |
684 | } |
685 | ||
686 | static void hw_cleanup(void) | |
687 | { | |
688 | GSList *l; | |
689 | struct sr_device_instance *sdi; | |
690 | ||
d1175d5f | 691 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
692 | |
693 | /* Properly close all devices. */ | |
694 | for (l = device_instances; l; l = l->next) { | |
695 | if ((sdi = l->data) == NULL) { | |
30939770 | 696 | sr_warn("la8: %s: sdi was NULL, continuing", __func__); |
f4314d7e UH |
697 | continue; |
698 | } | |
25a605d1 UH |
699 | #if 0 |
700 | /* | |
701 | * Fixes a segfault as it's free()d elsewhere already. | |
702 | * TODO: Document who is supposed to free this, and when. | |
703 | */ | |
f4314d7e UH |
704 | if (sdi->priv != NULL) |
705 | free(sdi->priv); | |
706 | else | |
30939770 UH |
707 | sr_warn("la8: %s: sdi->priv was NULL, nothing " |
708 | "to do", __func__); | |
25a605d1 | 709 | #endif |
f4314d7e UH |
710 | sr_device_instance_free(sdi); /* Returns void. */ |
711 | } | |
712 | g_slist_free(device_instances); /* Returns void. */ | |
713 | device_instances = NULL; | |
714 | } | |
715 | ||
716 | static void *hw_get_device_info(int device_index, int device_info_id) | |
717 | { | |
718 | struct sr_device_instance *sdi; | |
719 | struct la8 *la8; | |
720 | void *info; | |
721 | ||
d1175d5f | 722 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
723 | |
724 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 725 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
726 | return NULL; |
727 | } | |
728 | ||
729 | if (!(la8 = sdi->priv)) { | |
30939770 | 730 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
731 | return NULL; |
732 | } | |
733 | ||
734 | switch (device_info_id) { | |
735 | case SR_DI_INSTANCE: | |
736 | info = sdi; | |
737 | break; | |
738 | case SR_DI_NUM_PROBES: | |
739 | info = GINT_TO_POINTER(NUM_PROBES); | |
740 | break; | |
464d12c7 KS |
741 | case SR_DI_PROBE_NAMES: |
742 | info = probe_names; | |
743 | break; | |
f4314d7e UH |
744 | case SR_DI_SAMPLERATES: |
745 | fill_supported_samplerates_if_needed(); | |
746 | info = &samplerates; | |
747 | break; | |
748 | case SR_DI_TRIGGER_TYPES: | |
749 | info = (char *)TRIGGER_TYPES; | |
750 | break; | |
751 | case SR_DI_CUR_SAMPLERATE: | |
752 | info = &la8->cur_samplerate; | |
753 | break; | |
754 | default: | |
755 | /* Unknown device info ID, return NULL. */ | |
30939770 | 756 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
757 | info = NULL; |
758 | break; | |
759 | } | |
760 | ||
761 | return info; | |
762 | } | |
763 | ||
764 | static int hw_get_status(int device_index) | |
765 | { | |
766 | struct sr_device_instance *sdi; | |
767 | ||
768 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 769 | sr_warn("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
770 | return SR_ST_NOT_FOUND; |
771 | } | |
772 | ||
b08024a8 | 773 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
774 | |
775 | return sdi->status; | |
776 | } | |
777 | ||
778 | static int *hw_get_capabilities(void) | |
779 | { | |
d1175d5f | 780 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
781 | |
782 | return capabilities; | |
783 | } | |
784 | ||
785 | static int hw_set_configuration(int device_index, int capability, void *value) | |
786 | { | |
787 | struct sr_device_instance *sdi; | |
788 | struct la8 *la8; | |
789 | ||
d1175d5f | 790 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
791 | |
792 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 793 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 794 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
795 | } |
796 | ||
797 | if (!(la8 = sdi->priv)) { | |
30939770 | 798 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 799 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
800 | } |
801 | ||
802 | switch (capability) { | |
803 | case SR_HWCAP_SAMPLERATE: | |
804 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
805 | return SR_ERR; | |
b08024a8 | 806 | sr_dbg("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate); |
f4314d7e UH |
807 | break; |
808 | case SR_HWCAP_PROBECONFIG: | |
ecaf59db UH |
809 | if (configure_probes(la8, (GSList *)value) != SR_OK) { |
810 | sr_err("la8: %s: probe config failed", __func__); | |
811 | return SR_ERR; | |
812 | } | |
f4314d7e UH |
813 | break; |
814 | case SR_HWCAP_LIMIT_MSEC: | |
815 | if (*(uint64_t *)value == 0) { | |
30939770 | 816 | sr_err("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
817 | return SR_ERR; |
818 | } | |
819 | la8->limit_msec = *(uint64_t *)value; | |
b08024a8 | 820 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec); |
f4314d7e UH |
821 | break; |
822 | case SR_HWCAP_LIMIT_SAMPLES: | |
823 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
30939770 | 824 | sr_err("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
825 | return SR_ERR; |
826 | } | |
827 | la8->limit_samples = *(uint64_t *)value; | |
b08024a8 | 828 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples); |
f4314d7e UH |
829 | break; |
830 | default: | |
831 | /* Unknown capability, return SR_ERR. */ | |
30939770 | 832 | sr_err("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
833 | return SR_ERR; |
834 | break; | |
835 | } | |
836 | ||
837 | return SR_OK; | |
838 | } | |
839 | ||
840 | /** | |
a76983fd | 841 | * Get a block of data from the LA8. |
f4314d7e UH |
842 | * |
843 | * @param la8 The LA8 struct containing private per-device-instance data. | |
844 | * @return SR_OK upon success, or SR_ERR upon errors. | |
845 | */ | |
846 | static int la8_read_block(struct la8 *la8) | |
847 | { | |
848 | int i, byte_offset, m, mi, p, index, bytes_read; | |
849 | time_t now; | |
850 | ||
851 | if (!la8) { | |
30939770 | 852 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 853 | return SR_ERR_ARG; |
f4314d7e UH |
854 | } |
855 | ||
856 | if (!la8->ftdic) { | |
30939770 | 857 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 858 | return SR_ERR_ARG; |
f4314d7e UH |
859 | } |
860 | ||
d1175d5f | 861 | sr_spew("la8: %s: reading block %d", __func__, la8->block_counter); |
f4314d7e | 862 | |
a76983fd | 863 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
864 | |
865 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
866 | if ((bytes_read == 0) && (la8->block_counter == 0)) { | |
867 | do { | |
d1175d5f | 868 | sr_spew("la8: %s: reading block 0 again", __func__); |
a76983fd | 869 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
870 | /* TODO: How to handle read errors here? */ |
871 | now = time(NULL); | |
872 | } while ((la8->done > now) && (bytes_read == 0)); | |
873 | } | |
874 | ||
875 | /* Check if block read was successful or a timeout occured. */ | |
a76983fd | 876 | if (bytes_read != BS) { |
b08024a8 | 877 | sr_warn("la8: %s: trigger timed out", __func__); |
f4314d7e UH |
878 | (void) la8_reset(la8); /* Ignore errors. */ |
879 | return SR_ERR; | |
880 | } | |
881 | ||
882 | /* De-mangle the data. */ | |
d1175d5f | 883 | sr_spew("la8: de-mangling samples of block %d", la8->block_counter); |
a76983fd | 884 | byte_offset = la8->block_counter * BS; |
f4314d7e UH |
885 | m = byte_offset / (1024 * 1024); |
886 | mi = m * (1024 * 1024); | |
a76983fd | 887 | for (i = 0; i < BS; i++) { |
f4314d7e UH |
888 | p = i & (1 << 0); |
889 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
890 | index += (la8->divcount == 0) ? p : (1 - p); | |
891 | la8->final_buf[index] = la8->mangled_buf[i]; | |
892 | } | |
893 | ||
894 | return SR_OK; | |
895 | } | |
896 | ||
4d7b525a UH |
897 | static void send_block_to_session_bus(struct la8 *la8, int block) |
898 | { | |
899 | int i; | |
900 | uint8_t sample, expected_sample; | |
901 | struct sr_datafeed_packet packet; | |
9c939c51 | 902 | struct sr_datafeed_logic logic; |
4d7b525a UH |
903 | int trigger_point; /* Relative trigger point (in this block). */ |
904 | ||
905 | /* Note: No sanity checks on la8/block, caller is responsible. */ | |
906 | ||
907 | /* Check if we can find the trigger condition in this block. */ | |
908 | trigger_point = -1; | |
909 | expected_sample = la8->trigger_pattern & la8->trigger_mask; | |
a76983fd | 910 | for (i = 0; i < BS; i++) { |
4d7b525a UH |
911 | /* Don't continue if the trigger was found previously. */ |
912 | if (la8->trigger_found) | |
913 | break; | |
914 | ||
f36cbf60 UH |
915 | /* |
916 | * Also, don't continue if triggers are "don't care", i.e. if | |
917 | * no trigger conditions were specified by the user. In that | |
918 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
919 | */ | |
920 | if (la8->trigger_mask == 0x00) | |
921 | break; | |
922 | ||
a76983fd | 923 | sample = *(la8->final_buf + (block * BS) + i); |
4d7b525a UH |
924 | |
925 | if ((sample & la8->trigger_mask) == expected_sample) { | |
926 | trigger_point = i; | |
927 | la8->trigger_found = 1; | |
928 | break; | |
929 | } | |
930 | } | |
931 | ||
932 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
933 | if (trigger_point == -1) { | |
a76983fd | 934 | /* Send an SR_DF_LOGIC packet to the session bus. */ |
d1175d5f UH |
935 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " |
936 | "block %d", BS, block); | |
4d7b525a | 937 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
938 | packet.timeoffset = block * BS * la8->period_ps; |
939 | packet.duration = BS * la8->period_ps; | |
940 | packet.payload = &logic; | |
941 | logic.length = BS; | |
942 | logic.unitsize = 1; | |
943 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
944 | sr_session_bus(la8->session_id, &packet); |
945 | return; | |
946 | } | |
947 | ||
948 | /* | |
949 | * We found the trigger, so some special handling is needed. We have | |
950 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
951 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
952 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
953 | */ | |
954 | ||
955 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
956 | ||
957 | /* If at least one sample is located before the trigger... */ | |
958 | if (trigger_point > 0) { | |
959 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
d1175d5f | 960 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " |
f36cbf60 | 961 | "start = %d, length = %d", block * BS, trigger_point); |
4d7b525a | 962 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
963 | packet.timeoffset = block * BS * la8->period_ps; |
964 | packet.duration = trigger_point * la8->period_ps; | |
965 | packet.payload = &logic; | |
966 | logic.length = trigger_point; | |
967 | logic.unitsize = 1; | |
968 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
969 | sr_session_bus(la8->session_id, &packet); |
970 | } | |
971 | ||
972 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
d1175d5f | 973 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", |
f36cbf60 | 974 | (block * BS) + trigger_point); |
4d7b525a | 975 | packet.type = SR_DF_TRIGGER; |
9c939c51 BV |
976 | packet.timeoffset = (block * BS + trigger_point) * la8->period_ps; |
977 | packet.duration = 0; | |
4d7b525a UH |
978 | packet.payload = NULL; |
979 | sr_session_bus(la8->session_id, &packet); | |
980 | ||
981 | /* If at least one sample is located after the trigger... */ | |
a76983fd | 982 | if (trigger_point < (BS - 1)) { |
4d7b525a | 983 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ |
d1175d5f | 984 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " |
896a19fd | 985 | "start = %d, length = %d", |
f36cbf60 | 986 | (block * BS) + trigger_point, BS - trigger_point); |
4d7b525a | 987 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
988 | packet.timeoffset = (block * BS + trigger_point) * la8->period_ps; |
989 | packet.duration = (BS - trigger_point) * la8->period_ps; | |
990 | packet.payload = &logic; | |
991 | logic.length = BS - trigger_point; | |
992 | logic.unitsize = 1; | |
993 | logic.data = la8->final_buf + (block * BS) + trigger_point; | |
4d7b525a UH |
994 | sr_session_bus(la8->session_id, &packet); |
995 | } | |
996 | } | |
997 | ||
9c939c51 | 998 | static int receive_data(int fd, int revents, void *session_data) |
f4314d7e UH |
999 | { |
1000 | int i, ret; | |
1001 | struct sr_device_instance *sdi; | |
f4314d7e UH |
1002 | struct la8 *la8; |
1003 | ||
1004 | /* Avoid compiler errors. */ | |
cb93f8a9 UH |
1005 | (void)fd; |
1006 | (void)revents; | |
f4314d7e | 1007 | |
9c939c51 | 1008 | if (!(sdi = session_data)) { |
30939770 | 1009 | sr_err("la8: %s: user_data was NULL", __func__); |
f4314d7e UH |
1010 | return FALSE; |
1011 | } | |
1012 | ||
1013 | if (!(la8 = sdi->priv)) { | |
30939770 | 1014 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1015 | return FALSE; |
1016 | } | |
1017 | ||
a76983fd | 1018 | /* Get one block of data. */ |
f4314d7e | 1019 | if ((ret = la8_read_block(la8)) < 0) { |
30939770 | 1020 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
9c939c51 | 1021 | hw_stop_acquisition(sdi->index, session_data); |
f4314d7e UH |
1022 | return FALSE; |
1023 | } | |
1024 | ||
a76983fd UH |
1025 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ |
1026 | if (la8->block_counter != (NUM_BLOCKS - 1)) { | |
f4314d7e UH |
1027 | la8->block_counter++; |
1028 | return TRUE; | |
1029 | } | |
1030 | ||
b08024a8 | 1031 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
1032 | |
1033 | /* All data was received and demangled, send it to the session bus. */ | |
a76983fd | 1034 | for (i = 0; i < NUM_BLOCKS; i++) |
4d7b525a | 1035 | send_block_to_session_bus(la8, i); |
f4314d7e | 1036 | |
9c939c51 | 1037 | hw_stop_acquisition(sdi->index, session_data); |
f4314d7e UH |
1038 | |
1039 | // return FALSE; /* FIXME? */ | |
1040 | return TRUE; | |
1041 | } | |
1042 | ||
9c939c51 | 1043 | static int hw_start_acquisition(int device_index, gpointer session_data) |
f4314d7e UH |
1044 | { |
1045 | struct sr_device_instance *sdi; | |
1046 | struct la8 *la8; | |
1047 | struct sr_datafeed_packet packet; | |
1048 | struct sr_datafeed_header header; | |
1049 | uint8_t buf[4]; | |
1050 | int bytes_written; | |
1051 | ||
d1175d5f | 1052 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
1053 | |
1054 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 1055 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 1056 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1057 | } |
1058 | ||
1059 | if (!(la8 = sdi->priv)) { | |
30939770 | 1060 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 1061 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1062 | } |
1063 | ||
1064 | if (!la8->ftdic) { | |
30939770 | 1065 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 1066 | return SR_ERR_ARG; |
f4314d7e UH |
1067 | } |
1068 | ||
1069 | la8->divcount = samplerate_to_divcount(la8->cur_samplerate); | |
1070 | if (la8->divcount == 0xff) { | |
30939770 | 1071 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
1072 | return SR_ERR; |
1073 | } | |
1074 | ||
1075 | /* Fill acquisition parameters into buf[]. */ | |
1076 | buf[0] = la8->divcount; | |
1077 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
1078 | buf[2] = la8->trigger_pattern; | |
1079 | buf[3] = la8->trigger_mask; | |
1080 | ||
1081 | /* Start acquisition. */ | |
1082 | bytes_written = la8_write(la8, buf, 4); | |
1083 | ||
1084 | if (bytes_written < 0) { | |
30939770 | 1085 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1086 | return SR_ERR; |
1087 | } else if (bytes_written != 4) { | |
30939770 | 1088 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1089 | return SR_ERR; /* TODO: Other error and return code? */ |
1090 | } | |
1091 | ||
b08024a8 | 1092 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e | 1093 | |
9c939c51 | 1094 | la8->session_id = session_data; |
f4314d7e UH |
1095 | |
1096 | /* Send header packet to the session bus. */ | |
b08024a8 | 1097 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e | 1098 | packet.type = SR_DF_HEADER; |
f4314d7e UH |
1099 | packet.payload = &header; |
1100 | header.feed_version = 1; | |
1101 | gettimeofday(&header.starttime, NULL); | |
1102 | header.samplerate = la8->cur_samplerate; | |
4bc5fd45 | 1103 | header.num_logic_probes = NUM_PROBES; |
f4314d7e | 1104 | header.num_analog_probes = 0; |
9c939c51 | 1105 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1106 | |
1107 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1108 | la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL) | |
1109 | + la8->trigger_timeout; | |
1110 | la8->block_counter = 0; | |
4d7b525a | 1111 | la8->trigger_found = 0; |
f4314d7e UH |
1112 | |
1113 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1114 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1115 | ||
1116 | return SR_OK; | |
1117 | } | |
1118 | ||
9c939c51 | 1119 | static void hw_stop_acquisition(int device_index, gpointer session_data) |
f4314d7e UH |
1120 | { |
1121 | struct sr_device_instance *sdi; | |
1122 | struct la8 *la8; | |
1123 | struct sr_datafeed_packet packet; | |
1124 | ||
b08024a8 | 1125 | sr_dbg("la8: stopping acquisition"); |
f4314d7e UH |
1126 | |
1127 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 1128 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
1129 | return; |
1130 | } | |
1131 | ||
1132 | if (!(la8 = sdi->priv)) { | |
30939770 | 1133 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1134 | return; |
1135 | } | |
1136 | ||
f4314d7e | 1137 | /* Send end packet to the session bus. */ |
b08024a8 | 1138 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e | 1139 | packet.type = SR_DF_END; |
9c939c51 | 1140 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1141 | } |
1142 | ||
1143 | struct sr_device_plugin chronovu_la8_plugin_info = { | |
1144 | .name = "chronovu-la8", | |
1145 | .longname = "ChronoVu LA8", | |
1146 | .api_version = 1, | |
1147 | .init = hw_init, | |
1148 | .cleanup = hw_cleanup, | |
86f5e3d8 UH |
1149 | .opendev = hw_opendev, |
1150 | .closedev = hw_closedev, | |
f4314d7e UH |
1151 | .get_device_info = hw_get_device_info, |
1152 | .get_status = hw_get_status, | |
1153 | .get_capabilities = hw_get_capabilities, | |
1154 | .set_configuration = hw_set_configuration, | |
1155 | .start_acquisition = hw_start_acquisition, | |
1156 | .stop_acquisition = hw_stop_acquisition, | |
1157 | }; |