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