]>
Commit | Line | Data |
---|---|---|
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 | ||
c37d2b1b | 44 | static const char *probe_names[NUM_PROBES + 1] = { |
464d12c7 KS |
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 | ||
63 | /** The current sampling limit (in ms). */ | |
64 | uint64_t limit_msec; | |
65 | ||
66 | /** The current sampling limit (in number of samples). */ | |
67 | uint64_t limit_samples; | |
68 | ||
f4314d7e UH |
69 | /** TODO */ |
70 | gpointer session_id; | |
71 | ||
72 | /** | |
a76983fd | 73 | * A buffer containing some (mangled) samples from the device. |
f4314d7e UH |
74 | * Format: Pretty mangled-up (due to hardware reasons), see code. |
75 | */ | |
a76983fd | 76 | uint8_t mangled_buf[BS]; |
f4314d7e UH |
77 | |
78 | /** | |
79 | * An 8MB buffer where we'll store the de-mangled samples. | |
80 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
81 | */ | |
82 | uint8_t *final_buf; | |
83 | ||
84 | /** | |
85 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
86 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
87 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
88 | */ | |
89 | uint8_t trigger_pattern; | |
90 | ||
91 | /** | |
92 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
93 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
94 | */ | |
95 | uint8_t trigger_mask; | |
96 | ||
97 | /** Time (in seconds) before the trigger times out. */ | |
98 | uint64_t trigger_timeout; | |
99 | ||
4d7b525a UH |
100 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ |
101 | int trigger_found; | |
102 | ||
f4314d7e UH |
103 | /** TODO */ |
104 | time_t done; | |
105 | ||
a76983fd | 106 | /** Counter/index for the data block to be read. */ |
f4314d7e UH |
107 | int block_counter; |
108 | ||
109 | /** The divcount value (determines the sample period) for the LA8. */ | |
110 | uint8_t divcount; | |
111 | }; | |
112 | ||
113 | /* This will be initialized via hw_get_device_info()/SR_DI_SAMPLERATES. */ | |
114 | static uint64_t supported_samplerates[255 + 1] = { 0 }; | |
115 | ||
116 | /* | |
117 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
118 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
119 | */ | |
120 | static struct sr_samplerates samplerates = { | |
121 | .low = 0, | |
122 | .high = 0, | |
123 | .step = 0, | |
124 | .list = supported_samplerates, | |
125 | }; | |
126 | ||
127 | /* Note: Continuous sampling is not supported by the hardware. */ | |
128 | static int capabilities[] = { | |
129 | SR_HWCAP_LOGIC_ANALYZER, | |
130 | SR_HWCAP_SAMPLERATE, | |
131 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
132 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
133 | 0, | |
134 | }; | |
135 | ||
136 | /* Function prototypes. */ | |
137 | static int la8_close_usb_reset_sequencer(struct la8 *la8); | |
9c939c51 | 138 | static void hw_stop_acquisition(int device_index, gpointer session_data); |
f4314d7e UH |
139 | static int la8_reset(struct la8 *la8); |
140 | ||
141 | static void fill_supported_samplerates_if_needed(void) | |
142 | { | |
143 | int i; | |
144 | ||
145 | /* Do nothing if supported_samplerates[] is already filled. */ | |
146 | if (supported_samplerates[0] != 0) | |
147 | return; | |
148 | ||
149 | /* Fill supported_samplerates[] with the proper values. */ | |
150 | for (i = 0; i < 255; i++) | |
151 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
152 | supported_samplerates[255] = 0; | |
153 | } | |
154 | ||
155 | /** | |
156 | * Check if the given samplerate is supported by the LA8 hardware. | |
157 | * | |
158 | * @param samplerate The samplerate (in Hz) to check. | |
159 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
160 | */ | |
161 | static int is_valid_samplerate(uint64_t samplerate) | |
162 | { | |
163 | int i; | |
164 | ||
165 | fill_supported_samplerates_if_needed(); | |
166 | ||
167 | for (i = 0; i < 255; i++) { | |
168 | if (supported_samplerates[i] == samplerate) | |
169 | return 1; | |
170 | } | |
171 | ||
b08024a8 UH |
172 | sr_warn("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
173 | __func__, samplerate); | |
f4314d7e UH |
174 | |
175 | return 0; | |
176 | } | |
177 | ||
178 | /** | |
179 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
180 | * | |
181 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
182 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
183 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
184 | * | |
185 | * @param samplerate The samplerate in Hz. | |
186 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
187 | */ | |
188 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
189 | { | |
190 | if (samplerate == 0) { | |
30939770 | 191 | sr_err("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
192 | return 0xff; |
193 | } | |
194 | ||
195 | if (!is_valid_samplerate(samplerate)) { | |
30939770 UH |
196 | sr_err("la8: %s: can't get divcount, samplerate invalid", |
197 | __func__); | |
f4314d7e UH |
198 | return 0xff; |
199 | } | |
200 | ||
201 | return (SR_MHZ(100) / samplerate) - 1; | |
202 | } | |
203 | ||
204 | /** | |
205 | * Write data of a certain length to the LA8's FTDI device. | |
206 | * | |
207 | * @param la8 The LA8 struct containing private per-device-instance data. | |
208 | * @param buf The buffer containing the data to write. | |
209 | * @param size The number of bytes to write. | |
210 | * @return The number of bytes written, or a negative value upon errors. | |
211 | */ | |
212 | static int la8_write(struct la8 *la8, uint8_t *buf, int size) | |
213 | { | |
214 | int bytes_written; | |
215 | ||
216 | if (!la8) { | |
30939770 | 217 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 218 | return SR_ERR_ARG; |
f4314d7e UH |
219 | } |
220 | ||
221 | if (!la8->ftdic) { | |
30939770 | 222 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 223 | return SR_ERR_ARG; |
f4314d7e UH |
224 | } |
225 | ||
226 | if (!buf) { | |
30939770 | 227 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 228 | return SR_ERR_ARG; |
f4314d7e UH |
229 | } |
230 | ||
231 | if (size < 0) { | |
30939770 | 232 | sr_err("la8: %s: size was < 0", __func__); |
8703f512 | 233 | return SR_ERR_ARG; |
f4314d7e UH |
234 | } |
235 | ||
236 | bytes_written = ftdi_write_data(la8->ftdic, buf, size); | |
237 | ||
238 | if (bytes_written < 0) { | |
b08024a8 UH |
239 | sr_warn("la8: %s: ftdi_write_data: (%d) %s", __func__, |
240 | bytes_written, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
241 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
242 | } else if (bytes_written != size) { | |
b08024a8 UH |
243 | sr_warn("la8: %s: bytes to write: %d, bytes written: %d", |
244 | __func__, size, bytes_written); | |
f4314d7e UH |
245 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
246 | } | |
247 | ||
248 | return bytes_written; | |
249 | } | |
250 | ||
251 | /** | |
252 | * Read a certain amount of bytes from the LA8's FTDI device. | |
253 | * | |
254 | * @param la8 The LA8 struct containing private per-device-instance data. | |
255 | * @param buf The buffer where the received data will be stored. | |
256 | * @param size The number of bytes to read. | |
257 | * @return The number of bytes read, or a negative value upon errors. | |
258 | */ | |
259 | static int la8_read(struct la8 *la8, uint8_t *buf, int size) | |
260 | { | |
261 | int bytes_read; | |
262 | ||
263 | if (!la8) { | |
30939770 | 264 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 265 | return SR_ERR_ARG; |
f4314d7e UH |
266 | } |
267 | ||
268 | if (!la8->ftdic) { | |
30939770 | 269 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 270 | return SR_ERR_ARG; |
f4314d7e UH |
271 | } |
272 | ||
273 | if (!buf) { | |
30939770 | 274 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 275 | return SR_ERR_ARG; |
f4314d7e UH |
276 | } |
277 | ||
278 | if (size <= 0) { | |
30939770 | 279 | sr_err("la8: %s: size was <= 0", __func__); |
8703f512 | 280 | return SR_ERR_ARG; |
f4314d7e UH |
281 | } |
282 | ||
283 | bytes_read = ftdi_read_data(la8->ftdic, buf, size); | |
284 | ||
285 | if (bytes_read < 0) { | |
b08024a8 UH |
286 | sr_warn("la8: %s: ftdi_read_data: (%d) %s", __func__, |
287 | bytes_read, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 288 | } else if (bytes_read != size) { |
b08024a8 UH |
289 | // sr_warn("la8: %s: bytes to read: %d, bytes read: %d", |
290 | // __func__, size, bytes_read); | |
f4314d7e UH |
291 | } |
292 | ||
293 | return bytes_read; | |
294 | } | |
295 | ||
296 | static int la8_close(struct la8 *la8) | |
297 | { | |
298 | int ret; | |
299 | ||
300 | if (!la8) { | |
30939770 | 301 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 302 | return SR_ERR_ARG; |
f4314d7e UH |
303 | } |
304 | ||
305 | if (!la8->ftdic) { | |
30939770 | 306 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 307 | return SR_ERR_ARG; |
f4314d7e UH |
308 | } |
309 | ||
310 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) { | |
b08024a8 UH |
311 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", |
312 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
313 | } |
314 | ||
315 | return ret; | |
316 | } | |
317 | ||
318 | /** | |
319 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
320 | * | |
321 | * @param la8 The LA8 struct containing private per-device-instance data. | |
322 | * @return SR_OK upon success, SR_ERR upon failure. | |
323 | */ | |
324 | static int la8_close_usb_reset_sequencer(struct la8 *la8) | |
325 | { | |
326 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
327 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
328 | int ret; | |
329 | ||
d1175d5f | 330 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
331 | |
332 | if (!la8) { | |
30939770 | 333 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 334 | return SR_ERR_ARG; |
f4314d7e UH |
335 | } |
336 | ||
337 | if (!la8->ftdic) { | |
30939770 | 338 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 339 | return SR_ERR_ARG; |
f4314d7e UH |
340 | } |
341 | ||
342 | if (la8->ftdic->usb_dev) { | |
343 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
b08024a8 | 344 | sr_dbg("la8: resetting sequencer logic"); |
f4314d7e UH |
345 | (void) la8_write(la8, buf, 8); /* Ignore errors. */ |
346 | g_usleep(100 * 1000); | |
347 | ||
348 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 349 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
350 | |
351 | /* Log errors, but ignore them (i.e., don't abort). */ | |
352 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) | |
b08024a8 | 353 | sr_warn("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
f4314d7e UH |
354 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
355 | if ((ret = ftdi_usb_reset(la8->ftdic)) < 0) | |
b08024a8 UH |
356 | sr_warn("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
357 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 358 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) |
b08024a8 UH |
359 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
360 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 361 | } else { |
d1175d5f | 362 | sr_spew("la8: %s: usb_dev was NULL, nothing to do", __func__); |
f4314d7e UH |
363 | } |
364 | ||
365 | ftdi_free(la8->ftdic); /* Returns void. */ | |
366 | la8->ftdic = NULL; | |
367 | ||
368 | return SR_OK; | |
369 | } | |
370 | ||
371 | /** | |
372 | * Reset the ChronoVu LA8. | |
373 | * | |
374 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
375 | * | |
376 | * @param la8 The LA8 struct containing private per-device-instance data. | |
377 | * @return SR_OK upon success, SR_ERR upon failure. | |
378 | */ | |
379 | static int la8_reset(struct la8 *la8) | |
380 | { | |
a76983fd | 381 | uint8_t buf[BS]; |
f4314d7e UH |
382 | time_t done, now; |
383 | int bytes_read; | |
384 | ||
385 | if (!la8) { | |
30939770 | 386 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 387 | return SR_ERR_ARG; |
f4314d7e UH |
388 | } |
389 | ||
390 | if (!la8->ftdic) { | |
30939770 | 391 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 392 | return SR_ERR_ARG; |
f4314d7e UH |
393 | } |
394 | ||
b08024a8 | 395 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
396 | |
397 | /* | |
398 | * Purge pending read data from the FTDI hardware FIFO until | |
399 | * no more data is left, or a timeout occurs (after 20s). | |
400 | */ | |
401 | done = 20 + time(NULL); | |
402 | do { | |
403 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
a76983fd | 404 | bytes_read = la8_read(la8, (uint8_t *)&buf, BS); |
f4314d7e UH |
405 | now = time(NULL); |
406 | } while ((done > now) && (bytes_read > 0)); | |
407 | ||
408 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
409 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ | |
410 | ||
b08024a8 | 411 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
412 | |
413 | return SR_OK; | |
414 | } | |
415 | ||
ecaf59db UH |
416 | static int configure_probes(struct la8 *la8, GSList *probes) |
417 | { | |
418 | struct sr_probe *probe; | |
419 | GSList *l; | |
420 | uint8_t probe_bit; | |
421 | char *tc; | |
422 | ||
423 | la8->trigger_pattern = 0; | |
424 | la8->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
425 | ||
426 | for (l = probes; l; l = l->next) { | |
427 | probe = (struct sr_probe *)l->data; | |
428 | ||
429 | if (!probe) { | |
430 | sr_err("la8: %s: probe was NULL", __func__); | |
431 | return SR_ERR; | |
432 | } | |
433 | ||
434 | /* Skip disabled probes. */ | |
435 | if (!probe->enabled) | |
436 | continue; | |
437 | ||
438 | /* Skip (enabled) probes with no configured trigger. */ | |
439 | if (!probe->trigger) | |
440 | continue; | |
441 | ||
442 | /* Note: Must only be run if probe->trigger != NULL. */ | |
443 | if (probe->index < 0 || probe->index > 7) { | |
444 | sr_err("la8: %s: invalid probe index %d, must be " | |
445 | "between 0 and 7", __func__, probe->index); | |
446 | return SR_ERR; | |
447 | } | |
448 | ||
449 | probe_bit = (1 << (probe->index - 1)); | |
450 | ||
451 | /* Configure the probe's trigger mask and trigger pattern. */ | |
452 | for (tc = probe->trigger; tc && *tc; tc++) { | |
453 | la8->trigger_mask |= probe_bit; | |
454 | ||
455 | /* Sanity check, LA8 only supports low/high trigger. */ | |
456 | if (*tc != '0' && *tc != '1') { | |
457 | sr_err("la8: %s: invalid trigger '%c', only " | |
458 | "'0'/'1' supported", __func__, *tc); | |
459 | return SR_ERR; | |
460 | } | |
461 | ||
462 | if (*tc == '1') | |
463 | la8->trigger_pattern |= probe_bit; | |
464 | } | |
465 | } | |
466 | ||
467 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
468 | __func__, la8->trigger_mask, la8->trigger_pattern); | |
469 | ||
470 | return SR_OK; | |
471 | } | |
472 | ||
f4314d7e UH |
473 | static int hw_init(const char *deviceinfo) |
474 | { | |
475 | int ret; | |
476 | struct sr_device_instance *sdi; | |
477 | struct la8 *la8; | |
478 | ||
d1175d5f | 479 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
480 | |
481 | /* Avoid compiler errors. */ | |
cb93f8a9 | 482 | (void)deviceinfo; |
f4314d7e UH |
483 | |
484 | /* Allocate memory for our private driver context. */ | |
2e82a17b | 485 | if (!(la8 = g_try_malloc(sizeof(struct la8)))) { |
30939770 | 486 | sr_err("la8: %s: struct la8 malloc failed", __func__); |
f4314d7e UH |
487 | goto err_free_nothing; |
488 | } | |
489 | ||
490 | /* Set some sane defaults. */ | |
491 | la8->ftdic = NULL; | |
492 | la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
493 | la8->limit_msec = 0; | |
494 | la8->limit_samples = 0; | |
f4314d7e | 495 | la8->session_id = NULL; |
a76983fd | 496 | memset(la8->mangled_buf, 0, BS); |
f4314d7e UH |
497 | la8->final_buf = NULL; |
498 | la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
499 | la8->trigger_mask = 0x00; /* All probes are "don't care". */ | |
500 | la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
4d7b525a | 501 | la8->trigger_found = 0; |
f4314d7e UH |
502 | la8->done = 0; |
503 | la8->block_counter = 0; | |
504 | la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
505 | ||
f4314d7e | 506 | /* Allocate memory where we'll store the de-mangled data. */ |
2e82a17b | 507 | if (!(la8->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 508 | sr_err("la8: %s: final_buf malloc failed", __func__); |
4362438f | 509 | goto err_free_la8; |
f4314d7e UH |
510 | } |
511 | ||
512 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
513 | if (!(la8->ftdic = ftdi_new())) { | |
30939770 | 514 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
515 | goto err_free_final_buf; |
516 | } | |
517 | ||
518 | /* Check for the device and temporarily open it. */ | |
519 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
520 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
e7bad063 | 521 | sr_dbg("la8: %s: ftdi_usb_open_desc: (%d) %s", |
30939770 | 522 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
f4314d7e | 523 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
f4314d7e UH |
524 | goto err_free_ftdic; |
525 | } | |
b08024a8 | 526 | sr_dbg("la8: found device"); |
f4314d7e UH |
527 | |
528 | /* Register the device with libsigrok. */ | |
529 | sdi = sr_device_instance_new(0, SR_ST_INITIALIZING, | |
530 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
531 | if (!sdi) { | |
30939770 | 532 | sr_err("la8: %s: sr_device_instance_new failed", __func__); |
f4314d7e UH |
533 | goto err_close_ftdic; |
534 | } | |
535 | ||
536 | sdi->priv = la8; | |
537 | ||
538 | device_instances = g_slist_append(device_instances, sdi); | |
539 | ||
d1175d5f | 540 | sr_spew("la8: %s finished successfully", __func__); |
f4314d7e UH |
541 | |
542 | /* Close device. We'll reopen it again when we need it. */ | |
543 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
544 | ||
f4314d7e UH |
545 | return 1; |
546 | ||
547 | err_close_ftdic: | |
548 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
549 | err_free_ftdic: | |
2e82a17b | 550 | free(la8->ftdic); /* NOT g_free()! */ |
f4314d7e | 551 | err_free_final_buf: |
2e82a17b | 552 | g_free(la8->final_buf); |
f4314d7e | 553 | err_free_la8: |
2e82a17b | 554 | g_free(la8); |
f4314d7e | 555 | err_free_nothing: |
e7bad063 | 556 | |
f4314d7e UH |
557 | return 0; |
558 | } | |
559 | ||
560 | static int hw_opendev(int device_index) | |
561 | { | |
562 | int ret; | |
563 | struct sr_device_instance *sdi; | |
564 | struct la8 *la8; | |
565 | ||
566 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 567 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 568 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
569 | } |
570 | ||
571 | if (!(la8 = sdi->priv)) { | |
30939770 | 572 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 573 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
574 | } |
575 | ||
b08024a8 | 576 | sr_dbg("la8: opening device"); |
f4314d7e UH |
577 | |
578 | /* Open the device. */ | |
579 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
580 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
30939770 UH |
581 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
582 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
583 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
584 | return SR_ERR; | |
585 | } | |
b08024a8 | 586 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
587 | |
588 | /* Purge RX/TX buffers in the FTDI chip. */ | |
589 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) { | |
30939770 UH |
590 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
591 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
592 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
593 | goto err_opendev_close_ftdic; | |
594 | } | |
b08024a8 | 595 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
596 | |
597 | /* Enable flow control in the FTDI chip. */ | |
598 | if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
30939770 UH |
599 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
600 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
601 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
602 | goto err_opendev_close_ftdic; | |
603 | } | |
b08024a8 | 604 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
605 | |
606 | /* Wait 100ms. */ | |
607 | g_usleep(100 * 1000); | |
608 | ||
609 | sdi->status = SR_ST_ACTIVE; | |
610 | ||
611 | return SR_OK; | |
612 | ||
613 | err_opendev_close_ftdic: | |
614 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
615 | return SR_ERR; | |
616 | } | |
617 | ||
618 | static int set_samplerate(struct sr_device_instance *sdi, uint64_t samplerate) | |
619 | { | |
620 | struct la8 *la8; | |
621 | ||
622 | if (!sdi) { | |
30939770 | 623 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 624 | return SR_ERR_ARG; |
f4314d7e UH |
625 | } |
626 | ||
627 | if (!(la8 = sdi->priv)) { | |
30939770 | 628 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 629 | return SR_ERR_ARG; |
f4314d7e UH |
630 | } |
631 | ||
d1175d5f | 632 | sr_spew("la8: setting samplerate"); |
f4314d7e UH |
633 | |
634 | fill_supported_samplerates_if_needed(); | |
635 | ||
636 | /* Check if this is a samplerate supported by the hardware. */ | |
637 | if (!is_valid_samplerate(samplerate)) | |
638 | return SR_ERR; | |
639 | ||
640 | /* Set the new samplerate. */ | |
641 | la8->cur_samplerate = samplerate; | |
642 | ||
b08024a8 | 643 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate); |
f4314d7e UH |
644 | |
645 | return SR_OK; | |
646 | } | |
647 | ||
697785d1 | 648 | static int hw_closedev(int device_index) |
f4314d7e UH |
649 | { |
650 | struct sr_device_instance *sdi; | |
651 | struct la8 *la8; | |
652 | ||
653 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 654 | sr_err("la8: %s: sdi was NULL", __func__); |
697785d1 | 655 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
656 | } |
657 | ||
658 | if (!(la8 = sdi->priv)) { | |
30939770 | 659 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
697785d1 | 660 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
661 | } |
662 | ||
b08024a8 | 663 | sr_dbg("la8: closing device"); |
f4314d7e UH |
664 | |
665 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 666 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
697785d1 | 667 | /* TODO: Really ignore errors here, or return SR_ERR? */ |
f4314d7e UH |
668 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
669 | } else { | |
d1175d5f | 670 | sr_spew("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
671 | } |
672 | ||
673 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
674 | |
675 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
d3b1b51c | 676 | g_free(la8->final_buf); |
697785d1 UH |
677 | |
678 | return SR_OK; | |
f4314d7e UH |
679 | } |
680 | ||
681 | static void hw_cleanup(void) | |
682 | { | |
683 | GSList *l; | |
684 | struct sr_device_instance *sdi; | |
685 | ||
d1175d5f | 686 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
687 | |
688 | /* Properly close all devices. */ | |
689 | for (l = device_instances; l; l = l->next) { | |
690 | if ((sdi = l->data) == NULL) { | |
30939770 | 691 | sr_warn("la8: %s: sdi was NULL, continuing", __func__); |
f4314d7e UH |
692 | continue; |
693 | } | |
25a605d1 UH |
694 | #if 0 |
695 | /* | |
696 | * Fixes a segfault as it's free()d elsewhere already. | |
697 | * TODO: Document who is supposed to free this, and when. | |
698 | */ | |
f4314d7e UH |
699 | if (sdi->priv != NULL) |
700 | free(sdi->priv); | |
701 | else | |
30939770 UH |
702 | sr_warn("la8: %s: sdi->priv was NULL, nothing " |
703 | "to do", __func__); | |
25a605d1 | 704 | #endif |
f4314d7e UH |
705 | sr_device_instance_free(sdi); /* Returns void. */ |
706 | } | |
707 | g_slist_free(device_instances); /* Returns void. */ | |
708 | device_instances = NULL; | |
709 | } | |
710 | ||
711 | static void *hw_get_device_info(int device_index, int device_info_id) | |
712 | { | |
713 | struct sr_device_instance *sdi; | |
714 | struct la8 *la8; | |
715 | void *info; | |
716 | ||
d1175d5f | 717 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
718 | |
719 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 720 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
721 | return NULL; |
722 | } | |
723 | ||
724 | if (!(la8 = sdi->priv)) { | |
30939770 | 725 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
726 | return NULL; |
727 | } | |
728 | ||
729 | switch (device_info_id) { | |
730 | case SR_DI_INSTANCE: | |
731 | info = sdi; | |
732 | break; | |
733 | case SR_DI_NUM_PROBES: | |
734 | info = GINT_TO_POINTER(NUM_PROBES); | |
735 | break; | |
464d12c7 KS |
736 | case SR_DI_PROBE_NAMES: |
737 | info = probe_names; | |
738 | break; | |
f4314d7e UH |
739 | case SR_DI_SAMPLERATES: |
740 | fill_supported_samplerates_if_needed(); | |
741 | info = &samplerates; | |
742 | break; | |
743 | case SR_DI_TRIGGER_TYPES: | |
744 | info = (char *)TRIGGER_TYPES; | |
745 | break; | |
746 | case SR_DI_CUR_SAMPLERATE: | |
747 | info = &la8->cur_samplerate; | |
748 | break; | |
749 | default: | |
750 | /* Unknown device info ID, return NULL. */ | |
30939770 | 751 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
752 | info = NULL; |
753 | break; | |
754 | } | |
755 | ||
756 | return info; | |
757 | } | |
758 | ||
759 | static int hw_get_status(int device_index) | |
760 | { | |
761 | struct sr_device_instance *sdi; | |
762 | ||
763 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 764 | sr_warn("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
765 | return SR_ST_NOT_FOUND; |
766 | } | |
767 | ||
b08024a8 | 768 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
769 | |
770 | return sdi->status; | |
771 | } | |
772 | ||
773 | static int *hw_get_capabilities(void) | |
774 | { | |
d1175d5f | 775 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
776 | |
777 | return capabilities; | |
778 | } | |
779 | ||
780 | static int hw_set_configuration(int device_index, int capability, void *value) | |
781 | { | |
782 | struct sr_device_instance *sdi; | |
783 | struct la8 *la8; | |
784 | ||
d1175d5f | 785 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
786 | |
787 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 788 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 789 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
790 | } |
791 | ||
792 | if (!(la8 = sdi->priv)) { | |
30939770 | 793 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 794 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
795 | } |
796 | ||
797 | switch (capability) { | |
798 | case SR_HWCAP_SAMPLERATE: | |
799 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
800 | return SR_ERR; | |
b08024a8 | 801 | sr_dbg("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate); |
f4314d7e UH |
802 | break; |
803 | case SR_HWCAP_PROBECONFIG: | |
ecaf59db UH |
804 | if (configure_probes(la8, (GSList *)value) != SR_OK) { |
805 | sr_err("la8: %s: probe config failed", __func__); | |
806 | return SR_ERR; | |
807 | } | |
f4314d7e UH |
808 | break; |
809 | case SR_HWCAP_LIMIT_MSEC: | |
810 | if (*(uint64_t *)value == 0) { | |
30939770 | 811 | sr_err("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
812 | return SR_ERR; |
813 | } | |
814 | la8->limit_msec = *(uint64_t *)value; | |
b08024a8 | 815 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec); |
f4314d7e UH |
816 | break; |
817 | case SR_HWCAP_LIMIT_SAMPLES: | |
818 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
30939770 | 819 | sr_err("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
820 | return SR_ERR; |
821 | } | |
822 | la8->limit_samples = *(uint64_t *)value; | |
b08024a8 | 823 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples); |
f4314d7e UH |
824 | break; |
825 | default: | |
826 | /* Unknown capability, return SR_ERR. */ | |
30939770 | 827 | sr_err("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
828 | return SR_ERR; |
829 | break; | |
830 | } | |
831 | ||
832 | return SR_OK; | |
833 | } | |
834 | ||
835 | /** | |
a76983fd | 836 | * Get a block of data from the LA8. |
f4314d7e UH |
837 | * |
838 | * @param la8 The LA8 struct containing private per-device-instance data. | |
839 | * @return SR_OK upon success, or SR_ERR upon errors. | |
840 | */ | |
841 | static int la8_read_block(struct la8 *la8) | |
842 | { | |
843 | int i, byte_offset, m, mi, p, index, bytes_read; | |
844 | time_t now; | |
845 | ||
846 | if (!la8) { | |
30939770 | 847 | sr_err("la8: %s: la8 was NULL", __func__); |
8703f512 | 848 | return SR_ERR_ARG; |
f4314d7e UH |
849 | } |
850 | ||
851 | if (!la8->ftdic) { | |
30939770 | 852 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 853 | return SR_ERR_ARG; |
f4314d7e UH |
854 | } |
855 | ||
d1175d5f | 856 | sr_spew("la8: %s: reading block %d", __func__, la8->block_counter); |
f4314d7e | 857 | |
a76983fd | 858 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
859 | |
860 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
861 | if ((bytes_read == 0) && (la8->block_counter == 0)) { | |
862 | do { | |
d1175d5f | 863 | sr_spew("la8: %s: reading block 0 again", __func__); |
a76983fd | 864 | bytes_read = la8_read(la8, la8->mangled_buf, BS); |
f4314d7e UH |
865 | /* TODO: How to handle read errors here? */ |
866 | now = time(NULL); | |
867 | } while ((la8->done > now) && (bytes_read == 0)); | |
868 | } | |
869 | ||
870 | /* Check if block read was successful or a timeout occured. */ | |
a76983fd | 871 | if (bytes_read != BS) { |
b08024a8 | 872 | sr_warn("la8: %s: trigger timed out", __func__); |
f4314d7e UH |
873 | (void) la8_reset(la8); /* Ignore errors. */ |
874 | return SR_ERR; | |
875 | } | |
876 | ||
877 | /* De-mangle the data. */ | |
d1175d5f | 878 | sr_spew("la8: de-mangling samples of block %d", la8->block_counter); |
a76983fd | 879 | byte_offset = la8->block_counter * BS; |
f4314d7e UH |
880 | m = byte_offset / (1024 * 1024); |
881 | mi = m * (1024 * 1024); | |
a76983fd | 882 | for (i = 0; i < BS; i++) { |
f4314d7e UH |
883 | p = i & (1 << 0); |
884 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
885 | index += (la8->divcount == 0) ? p : (1 - p); | |
886 | la8->final_buf[index] = la8->mangled_buf[i]; | |
887 | } | |
888 | ||
889 | return SR_OK; | |
890 | } | |
891 | ||
4d7b525a UH |
892 | static void send_block_to_session_bus(struct la8 *la8, int block) |
893 | { | |
894 | int i; | |
895 | uint8_t sample, expected_sample; | |
896 | struct sr_datafeed_packet packet; | |
9c939c51 | 897 | struct sr_datafeed_logic logic; |
4d7b525a UH |
898 | int trigger_point; /* Relative trigger point (in this block). */ |
899 | ||
900 | /* Note: No sanity checks on la8/block, caller is responsible. */ | |
901 | ||
902 | /* Check if we can find the trigger condition in this block. */ | |
903 | trigger_point = -1; | |
904 | expected_sample = la8->trigger_pattern & la8->trigger_mask; | |
a76983fd | 905 | for (i = 0; i < BS; i++) { |
4d7b525a UH |
906 | /* Don't continue if the trigger was found previously. */ |
907 | if (la8->trigger_found) | |
908 | break; | |
909 | ||
f36cbf60 UH |
910 | /* |
911 | * Also, don't continue if triggers are "don't care", i.e. if | |
912 | * no trigger conditions were specified by the user. In that | |
913 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
914 | */ | |
915 | if (la8->trigger_mask == 0x00) | |
916 | break; | |
917 | ||
a76983fd | 918 | sample = *(la8->final_buf + (block * BS) + i); |
4d7b525a UH |
919 | |
920 | if ((sample & la8->trigger_mask) == expected_sample) { | |
921 | trigger_point = i; | |
922 | la8->trigger_found = 1; | |
923 | break; | |
924 | } | |
925 | } | |
926 | ||
927 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
928 | if (trigger_point == -1) { | |
a76983fd | 929 | /* Send an SR_DF_LOGIC packet to the session bus. */ |
d1175d5f UH |
930 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " |
931 | "block %d", BS, block); | |
4d7b525a | 932 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
933 | packet.payload = &logic; |
934 | logic.length = BS; | |
935 | logic.unitsize = 1; | |
936 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
937 | sr_session_bus(la8->session_id, &packet); |
938 | return; | |
939 | } | |
940 | ||
941 | /* | |
942 | * We found the trigger, so some special handling is needed. We have | |
943 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
944 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
945 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
946 | */ | |
947 | ||
948 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
949 | ||
950 | /* If at least one sample is located before the trigger... */ | |
951 | if (trigger_point > 0) { | |
952 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
d1175d5f | 953 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " |
f36cbf60 | 954 | "start = %d, length = %d", block * BS, trigger_point); |
4d7b525a | 955 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
956 | packet.payload = &logic; |
957 | logic.length = trigger_point; | |
958 | logic.unitsize = 1; | |
959 | logic.data = la8->final_buf + (block * BS); | |
4d7b525a UH |
960 | sr_session_bus(la8->session_id, &packet); |
961 | } | |
962 | ||
963 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
d1175d5f | 964 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", |
f36cbf60 | 965 | (block * BS) + trigger_point); |
4d7b525a | 966 | packet.type = SR_DF_TRIGGER; |
4d7b525a UH |
967 | packet.payload = NULL; |
968 | sr_session_bus(la8->session_id, &packet); | |
969 | ||
970 | /* If at least one sample is located after the trigger... */ | |
a76983fd | 971 | if (trigger_point < (BS - 1)) { |
4d7b525a | 972 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ |
d1175d5f | 973 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " |
896a19fd | 974 | "start = %d, length = %d", |
f36cbf60 | 975 | (block * BS) + trigger_point, BS - trigger_point); |
4d7b525a | 976 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
977 | packet.payload = &logic; |
978 | logic.length = BS - trigger_point; | |
979 | logic.unitsize = 1; | |
980 | logic.data = la8->final_buf + (block * BS) + trigger_point; | |
4d7b525a UH |
981 | sr_session_bus(la8->session_id, &packet); |
982 | } | |
983 | } | |
984 | ||
9c939c51 | 985 | static int receive_data(int fd, int revents, void *session_data) |
f4314d7e UH |
986 | { |
987 | int i, ret; | |
988 | struct sr_device_instance *sdi; | |
f4314d7e UH |
989 | struct la8 *la8; |
990 | ||
991 | /* Avoid compiler errors. */ | |
cb93f8a9 UH |
992 | (void)fd; |
993 | (void)revents; | |
f4314d7e | 994 | |
9c939c51 | 995 | if (!(sdi = session_data)) { |
ae32d7d7 | 996 | sr_err("la8: %s: session_data was NULL", __func__); |
f4314d7e UH |
997 | return FALSE; |
998 | } | |
999 | ||
1000 | if (!(la8 = sdi->priv)) { | |
30939770 | 1001 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1002 | return FALSE; |
1003 | } | |
1004 | ||
a76983fd | 1005 | /* Get one block of data. */ |
f4314d7e | 1006 | if ((ret = la8_read_block(la8)) < 0) { |
30939770 | 1007 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
9c939c51 | 1008 | hw_stop_acquisition(sdi->index, session_data); |
f4314d7e UH |
1009 | return FALSE; |
1010 | } | |
1011 | ||
a76983fd UH |
1012 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ |
1013 | if (la8->block_counter != (NUM_BLOCKS - 1)) { | |
f4314d7e UH |
1014 | la8->block_counter++; |
1015 | return TRUE; | |
1016 | } | |
1017 | ||
b08024a8 | 1018 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
1019 | |
1020 | /* All data was received and demangled, send it to the session bus. */ | |
a76983fd | 1021 | for (i = 0; i < NUM_BLOCKS; i++) |
4d7b525a | 1022 | send_block_to_session_bus(la8, i); |
f4314d7e | 1023 | |
9c939c51 | 1024 | hw_stop_acquisition(sdi->index, session_data); |
f4314d7e UH |
1025 | |
1026 | // return FALSE; /* FIXME? */ | |
1027 | return TRUE; | |
1028 | } | |
1029 | ||
9c939c51 | 1030 | static int hw_start_acquisition(int device_index, gpointer session_data) |
f4314d7e UH |
1031 | { |
1032 | struct sr_device_instance *sdi; | |
1033 | struct la8 *la8; | |
1034 | struct sr_datafeed_packet packet; | |
1035 | struct sr_datafeed_header header; | |
1036 | uint8_t buf[4]; | |
1037 | int bytes_written; | |
1038 | ||
d1175d5f | 1039 | sr_spew("la8: entering %s", __func__); |
f4314d7e UH |
1040 | |
1041 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 1042 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 1043 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1044 | } |
1045 | ||
1046 | if (!(la8 = sdi->priv)) { | |
30939770 | 1047 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 1048 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1049 | } |
1050 | ||
1051 | if (!la8->ftdic) { | |
30939770 | 1052 | sr_err("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 1053 | return SR_ERR_ARG; |
f4314d7e UH |
1054 | } |
1055 | ||
1056 | la8->divcount = samplerate_to_divcount(la8->cur_samplerate); | |
1057 | if (la8->divcount == 0xff) { | |
30939770 | 1058 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
1059 | return SR_ERR; |
1060 | } | |
1061 | ||
1062 | /* Fill acquisition parameters into buf[]. */ | |
1063 | buf[0] = la8->divcount; | |
1064 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
1065 | buf[2] = la8->trigger_pattern; | |
1066 | buf[3] = la8->trigger_mask; | |
1067 | ||
1068 | /* Start acquisition. */ | |
1069 | bytes_written = la8_write(la8, buf, 4); | |
1070 | ||
1071 | if (bytes_written < 0) { | |
30939770 | 1072 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1073 | return SR_ERR; |
1074 | } else if (bytes_written != 4) { | |
30939770 | 1075 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1076 | return SR_ERR; /* TODO: Other error and return code? */ |
1077 | } | |
1078 | ||
b08024a8 | 1079 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e | 1080 | |
9c939c51 | 1081 | la8->session_id = session_data; |
f4314d7e UH |
1082 | |
1083 | /* Send header packet to the session bus. */ | |
b08024a8 | 1084 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e | 1085 | packet.type = SR_DF_HEADER; |
f4314d7e UH |
1086 | packet.payload = &header; |
1087 | header.feed_version = 1; | |
1088 | gettimeofday(&header.starttime, NULL); | |
1089 | header.samplerate = la8->cur_samplerate; | |
4bc5fd45 | 1090 | header.num_logic_probes = NUM_PROBES; |
f4314d7e | 1091 | header.num_analog_probes = 0; |
9c939c51 | 1092 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1093 | |
1094 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1095 | la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL) | |
1096 | + la8->trigger_timeout; | |
1097 | la8->block_counter = 0; | |
4d7b525a | 1098 | la8->trigger_found = 0; |
f4314d7e UH |
1099 | |
1100 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1101 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1102 | ||
1103 | return SR_OK; | |
1104 | } | |
1105 | ||
9c939c51 | 1106 | static void hw_stop_acquisition(int device_index, gpointer session_data) |
f4314d7e UH |
1107 | { |
1108 | struct sr_device_instance *sdi; | |
1109 | struct la8 *la8; | |
1110 | struct sr_datafeed_packet packet; | |
1111 | ||
b08024a8 | 1112 | sr_dbg("la8: stopping acquisition"); |
f4314d7e UH |
1113 | |
1114 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
30939770 | 1115 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
1116 | return; |
1117 | } | |
1118 | ||
1119 | if (!(la8 = sdi->priv)) { | |
30939770 | 1120 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1121 | return; |
1122 | } | |
1123 | ||
f4314d7e | 1124 | /* Send end packet to the session bus. */ |
b08024a8 | 1125 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e | 1126 | packet.type = SR_DF_END; |
9c939c51 | 1127 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1128 | } |
1129 | ||
ca070ed9 | 1130 | SR_PRIV struct sr_device_plugin chronovu_la8_plugin_info = { |
f4314d7e UH |
1131 | .name = "chronovu-la8", |
1132 | .longname = "ChronoVu LA8", | |
1133 | .api_version = 1, | |
1134 | .init = hw_init, | |
1135 | .cleanup = hw_cleanup, | |
86f5e3d8 UH |
1136 | .opendev = hw_opendev, |
1137 | .closedev = hw_closedev, | |
f4314d7e UH |
1138 | .get_device_info = hw_get_device_info, |
1139 | .get_status = hw_get_status, | |
1140 | .get_capabilities = hw_get_capabilities, | |
1141 | .set_configuration = hw_set_configuration, | |
1142 | .start_acquisition = hw_start_acquisition, | |
1143 | .stop_acquisition = hw_stop_acquisition, | |
1144 | }; |