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Commit | Line | Data |
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f4314d7e UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
47671b0f | 4 | * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de> |
f4314d7e UH |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <ftdi.h> | |
ecaf59db | 22 | #include <glib.h> |
4362438f | 23 | #include <string.h> |
cd853ff0 | 24 | #include <stdlib.h> |
b7f09cf8 UH |
25 | #include "sigrok.h" |
26 | #include "sigrok-internal.h" | |
f4314d7e UH |
27 | |
28 | #define USB_VENDOR_ID 0x0403 | |
29 | #define USB_PRODUCT_ID 0x6001 | |
30 | #define USB_DESCRIPTION "ChronoVu LA8" | |
31 | #define USB_VENDOR_NAME "ChronoVu" | |
32 | #define USB_MODEL_NAME "LA8" | |
33 | #define USB_MODEL_VERSION "" | |
34 | ||
35 | #define NUM_PROBES 8 | |
36 | #define TRIGGER_TYPES "01" | |
37 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
38 | #define MIN_NUM_SAMPLES 1 | |
39 | ||
a76983fd UH |
40 | #define BS 4096 /* Block size */ |
41 | #define NUM_BLOCKS 2048 /* Number of blocks */ | |
42 | ||
d68e2d1a | 43 | static GSList *dev_insts = NULL; |
f4314d7e | 44 | |
c37d2b1b | 45 | static const char *probe_names[NUM_PROBES + 1] = { |
464d12c7 KS |
46 | "0", |
47 | "1", | |
48 | "2", | |
49 | "3", | |
50 | "4", | |
51 | "5", | |
52 | "6", | |
53 | "7", | |
54 | NULL, | |
55 | }; | |
56 | ||
ea9cfed7 UH |
57 | /* Private, per-device-instance driver context. */ |
58 | struct context { | |
f4314d7e UH |
59 | /** FTDI device context (used by libftdi). */ |
60 | struct ftdi_context *ftdic; | |
61 | ||
62 | /** The currently configured samplerate of the device. */ | |
63 | uint64_t cur_samplerate; | |
64 | ||
65 | /** The current sampling limit (in ms). */ | |
66 | uint64_t limit_msec; | |
67 | ||
68 | /** The current sampling limit (in number of samples). */ | |
69 | uint64_t limit_samples; | |
70 | ||
f4314d7e UH |
71 | /** TODO */ |
72 | gpointer session_id; | |
73 | ||
74 | /** | |
a76983fd | 75 | * A buffer containing some (mangled) samples from the device. |
f4314d7e UH |
76 | * Format: Pretty mangled-up (due to hardware reasons), see code. |
77 | */ | |
a76983fd | 78 | uint8_t mangled_buf[BS]; |
f4314d7e UH |
79 | |
80 | /** | |
81 | * An 8MB buffer where we'll store the de-mangled samples. | |
82 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
83 | */ | |
84 | uint8_t *final_buf; | |
85 | ||
86 | /** | |
87 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
88 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
89 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
90 | */ | |
91 | uint8_t trigger_pattern; | |
92 | ||
93 | /** | |
94 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
95 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
96 | */ | |
97 | uint8_t trigger_mask; | |
98 | ||
99 | /** Time (in seconds) before the trigger times out. */ | |
100 | uint64_t trigger_timeout; | |
101 | ||
4d7b525a UH |
102 | /** Tells us whether an SR_DF_TRIGGER packet was already sent. */ |
103 | int trigger_found; | |
104 | ||
f4314d7e UH |
105 | /** TODO */ |
106 | time_t done; | |
107 | ||
a76983fd | 108 | /** Counter/index for the data block to be read. */ |
f4314d7e UH |
109 | int block_counter; |
110 | ||
111 | /** The divcount value (determines the sample period) for the LA8. */ | |
112 | uint8_t divcount; | |
113 | }; | |
114 | ||
5097b0d0 | 115 | /* This will be initialized via hw_dev_info_get()/SR_DI_SAMPLERATES. */ |
f4314d7e UH |
116 | static uint64_t supported_samplerates[255 + 1] = { 0 }; |
117 | ||
118 | /* | |
119 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
120 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
121 | */ | |
122 | static struct sr_samplerates samplerates = { | |
123 | .low = 0, | |
124 | .high = 0, | |
125 | .step = 0, | |
126 | .list = supported_samplerates, | |
127 | }; | |
128 | ||
129 | /* Note: Continuous sampling is not supported by the hardware. */ | |
ffedd0bf | 130 | static int hwcaps[] = { |
f4314d7e UH |
131 | SR_HWCAP_LOGIC_ANALYZER, |
132 | SR_HWCAP_SAMPLERATE, | |
133 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
134 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
135 | 0, | |
136 | }; | |
137 | ||
138 | /* Function prototypes. */ | |
ea9cfed7 | 139 | static int la8_close_usb_reset_sequencer(struct context *ctx); |
69040b7c | 140 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data); |
ea9cfed7 | 141 | static int la8_reset(struct context *ctx); |
f4314d7e UH |
142 | |
143 | static void fill_supported_samplerates_if_needed(void) | |
144 | { | |
145 | int i; | |
146 | ||
147 | /* Do nothing if supported_samplerates[] is already filled. */ | |
148 | if (supported_samplerates[0] != 0) | |
149 | return; | |
150 | ||
151 | /* Fill supported_samplerates[] with the proper values. */ | |
152 | for (i = 0; i < 255; i++) | |
153 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
154 | supported_samplerates[255] = 0; | |
155 | } | |
156 | ||
157 | /** | |
158 | * Check if the given samplerate is supported by the LA8 hardware. | |
159 | * | |
160 | * @param samplerate The samplerate (in Hz) to check. | |
161 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
162 | */ | |
163 | static int is_valid_samplerate(uint64_t samplerate) | |
164 | { | |
165 | int i; | |
166 | ||
167 | fill_supported_samplerates_if_needed(); | |
168 | ||
169 | for (i = 0; i < 255; i++) { | |
170 | if (supported_samplerates[i] == samplerate) | |
171 | return 1; | |
172 | } | |
173 | ||
133a37bf UH |
174 | sr_err("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
175 | __func__, samplerate); | |
f4314d7e UH |
176 | |
177 | return 0; | |
178 | } | |
179 | ||
180 | /** | |
181 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
182 | * | |
183 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
184 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
185 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
186 | * | |
187 | * @param samplerate The samplerate in Hz. | |
188 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
189 | */ | |
190 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
191 | { | |
192 | if (samplerate == 0) { | |
30939770 | 193 | sr_err("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
194 | return 0xff; |
195 | } | |
196 | ||
197 | if (!is_valid_samplerate(samplerate)) { | |
30939770 UH |
198 | sr_err("la8: %s: can't get divcount, samplerate invalid", |
199 | __func__); | |
f4314d7e UH |
200 | return 0xff; |
201 | } | |
202 | ||
203 | return (SR_MHZ(100) / samplerate) - 1; | |
204 | } | |
205 | ||
206 | /** | |
207 | * Write data of a certain length to the LA8's FTDI device. | |
208 | * | |
47671b0f UH |
209 | * @param ctx The struct containing private per-device-instance data. Must not |
210 | * be NULL. ctx->ftdic must not be NULL either. | |
211 | * @param buf The buffer containing the data to write. Must not be NULL. | |
212 | * @param size The number of bytes to write. Must be >= 0. | |
f4314d7e UH |
213 | * @return The number of bytes written, or a negative value upon errors. |
214 | */ | |
ea9cfed7 | 215 | static int la8_write(struct context *ctx, uint8_t *buf, int size) |
f4314d7e UH |
216 | { |
217 | int bytes_written; | |
218 | ||
47671b0f | 219 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ |
f4314d7e UH |
220 | |
221 | if (!buf) { | |
30939770 | 222 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 223 | return SR_ERR_ARG; |
f4314d7e UH |
224 | } |
225 | ||
226 | if (size < 0) { | |
30939770 | 227 | sr_err("la8: %s: size was < 0", __func__); |
8703f512 | 228 | return SR_ERR_ARG; |
f4314d7e UH |
229 | } |
230 | ||
ea9cfed7 | 231 | bytes_written = ftdi_write_data(ctx->ftdic, buf, size); |
f4314d7e UH |
232 | |
233 | if (bytes_written < 0) { | |
133a37bf | 234 | sr_err("la8: %s: ftdi_write_data: (%d) %s", __func__, |
ea9cfed7 UH |
235 | bytes_written, ftdi_get_error_string(ctx->ftdic)); |
236 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
f4314d7e | 237 | } else if (bytes_written != size) { |
133a37bf UH |
238 | sr_err("la8: %s: bytes to write: %d, bytes written: %d", |
239 | __func__, size, bytes_written); | |
ea9cfed7 | 240 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e UH |
241 | } |
242 | ||
243 | return bytes_written; | |
244 | } | |
245 | ||
246 | /** | |
247 | * Read a certain amount of bytes from the LA8's FTDI device. | |
248 | * | |
47671b0f UH |
249 | * @param ctx The struct containing private per-device-instance data. Must not |
250 | * be NULL. ctx->ftdic must not be NULL either. | |
251 | * @param buf The buffer where the received data will be stored. Must not | |
252 | * be NULL. | |
253 | * @param size The number of bytes to read. Must be >= 1. | |
f4314d7e UH |
254 | * @return The number of bytes read, or a negative value upon errors. |
255 | */ | |
ea9cfed7 | 256 | static int la8_read(struct context *ctx, uint8_t *buf, int size) |
f4314d7e UH |
257 | { |
258 | int bytes_read; | |
259 | ||
47671b0f | 260 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ |
f4314d7e UH |
261 | |
262 | if (!buf) { | |
30939770 | 263 | sr_err("la8: %s: buf was NULL", __func__); |
8703f512 | 264 | return SR_ERR_ARG; |
f4314d7e UH |
265 | } |
266 | ||
267 | if (size <= 0) { | |
30939770 | 268 | sr_err("la8: %s: size was <= 0", __func__); |
8703f512 | 269 | return SR_ERR_ARG; |
f4314d7e UH |
270 | } |
271 | ||
ea9cfed7 | 272 | bytes_read = ftdi_read_data(ctx->ftdic, buf, size); |
f4314d7e UH |
273 | |
274 | if (bytes_read < 0) { | |
133a37bf | 275 | sr_err("la8: %s: ftdi_read_data: (%d) %s", __func__, |
ea9cfed7 | 276 | bytes_read, ftdi_get_error_string(ctx->ftdic)); |
f4314d7e | 277 | } else if (bytes_read != size) { |
133a37bf UH |
278 | // sr_err("la8: %s: bytes to read: %d, bytes read: %d", |
279 | // __func__, size, bytes_read); | |
f4314d7e UH |
280 | } |
281 | ||
282 | return bytes_read; | |
283 | } | |
284 | ||
ea9cfed7 | 285 | static int la8_close(struct context *ctx) |
f4314d7e UH |
286 | { |
287 | int ret; | |
288 | ||
ea9cfed7 UH |
289 | if (!ctx) { |
290 | sr_err("la8: %s: ctx was NULL", __func__); | |
8703f512 | 291 | return SR_ERR_ARG; |
f4314d7e UH |
292 | } |
293 | ||
ea9cfed7 UH |
294 | if (!ctx->ftdic) { |
295 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 296 | return SR_ERR_ARG; |
f4314d7e UH |
297 | } |
298 | ||
ea9cfed7 | 299 | if ((ret = ftdi_usb_close(ctx->ftdic)) < 0) { |
133a37bf | 300 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", |
ea9cfed7 | 301 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
f4314d7e UH |
302 | } |
303 | ||
304 | return ret; | |
305 | } | |
306 | ||
307 | /** | |
308 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
309 | * | |
ea9cfed7 | 310 | * @param ctx The struct containing private per-device-instance data. |
f4314d7e UH |
311 | * @return SR_OK upon success, SR_ERR upon failure. |
312 | */ | |
ea9cfed7 | 313 | static int la8_close_usb_reset_sequencer(struct context *ctx) |
f4314d7e UH |
314 | { |
315 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
316 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
317 | int ret; | |
318 | ||
ea9cfed7 UH |
319 | if (!ctx) { |
320 | sr_err("la8: %s: ctx was NULL", __func__); | |
8703f512 | 321 | return SR_ERR_ARG; |
f4314d7e UH |
322 | } |
323 | ||
ea9cfed7 UH |
324 | if (!ctx->ftdic) { |
325 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 326 | return SR_ERR_ARG; |
f4314d7e UH |
327 | } |
328 | ||
ea9cfed7 | 329 | if (ctx->ftdic->usb_dev) { |
f4314d7e | 330 | /* Reset the LA8 sequencer logic, then wait 100ms. */ |
b08024a8 | 331 | sr_dbg("la8: resetting sequencer logic"); |
ea9cfed7 | 332 | (void) la8_write(ctx, buf, 8); /* Ignore errors. */ |
f4314d7e UH |
333 | g_usleep(100 * 1000); |
334 | ||
335 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 336 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
337 | |
338 | /* Log errors, but ignore them (i.e., don't abort). */ | |
ea9cfed7 | 339 | if ((ret = ftdi_usb_purge_buffers(ctx->ftdic)) < 0) |
133a37bf | 340 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
ea9cfed7 UH |
341 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
342 | if ((ret = ftdi_usb_reset(ctx->ftdic)) < 0) | |
133a37bf | 343 | sr_err("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
ea9cfed7 UH |
344 | ret, ftdi_get_error_string(ctx->ftdic)); |
345 | if ((ret = ftdi_usb_close(ctx->ftdic)) < 0) | |
133a37bf | 346 | sr_err("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
ea9cfed7 | 347 | ret, ftdi_get_error_string(ctx->ftdic)); |
f4314d7e UH |
348 | } |
349 | ||
ea9cfed7 UH |
350 | ftdi_free(ctx->ftdic); /* Returns void. */ |
351 | ctx->ftdic = NULL; | |
f4314d7e UH |
352 | |
353 | return SR_OK; | |
354 | } | |
355 | ||
356 | /** | |
357 | * Reset the ChronoVu LA8. | |
358 | * | |
359 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
360 | * | |
ea9cfed7 | 361 | * @param ctx The struct containing private per-device-instance data. |
f4314d7e UH |
362 | * @return SR_OK upon success, SR_ERR upon failure. |
363 | */ | |
ea9cfed7 | 364 | static int la8_reset(struct context *ctx) |
f4314d7e | 365 | { |
a76983fd | 366 | uint8_t buf[BS]; |
f4314d7e UH |
367 | time_t done, now; |
368 | int bytes_read; | |
369 | ||
ea9cfed7 UH |
370 | if (!ctx) { |
371 | sr_err("la8: %s: ctx was NULL", __func__); | |
8703f512 | 372 | return SR_ERR_ARG; |
f4314d7e UH |
373 | } |
374 | ||
ea9cfed7 UH |
375 | if (!ctx->ftdic) { |
376 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 377 | return SR_ERR_ARG; |
f4314d7e UH |
378 | } |
379 | ||
b08024a8 | 380 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
381 | |
382 | /* | |
383 | * Purge pending read data from the FTDI hardware FIFO until | |
384 | * no more data is left, or a timeout occurs (after 20s). | |
385 | */ | |
386 | done = 20 + time(NULL); | |
387 | do { | |
388 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
ea9cfed7 | 389 | bytes_read = la8_read(ctx, (uint8_t *)&buf, BS); |
f4314d7e UH |
390 | now = time(NULL); |
391 | } while ((done > now) && (bytes_read > 0)); | |
392 | ||
393 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
ea9cfed7 | 394 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e | 395 | |
b08024a8 | 396 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
397 | |
398 | return SR_OK; | |
399 | } | |
400 | ||
ea9cfed7 | 401 | static int configure_probes(struct context *ctx, GSList *probes) |
ecaf59db UH |
402 | { |
403 | struct sr_probe *probe; | |
404 | GSList *l; | |
405 | uint8_t probe_bit; | |
406 | char *tc; | |
407 | ||
47671b0f UH |
408 | /* Note: Caller checked that ctx != NULL. */ |
409 | ||
ea9cfed7 UH |
410 | ctx->trigger_pattern = 0; |
411 | ctx->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
ecaf59db UH |
412 | |
413 | for (l = probes; l; l = l->next) { | |
414 | probe = (struct sr_probe *)l->data; | |
415 | ||
416 | if (!probe) { | |
417 | sr_err("la8: %s: probe was NULL", __func__); | |
418 | return SR_ERR; | |
419 | } | |
420 | ||
421 | /* Skip disabled probes. */ | |
422 | if (!probe->enabled) | |
423 | continue; | |
424 | ||
425 | /* Skip (enabled) probes with no configured trigger. */ | |
426 | if (!probe->trigger) | |
427 | continue; | |
428 | ||
429 | /* Note: Must only be run if probe->trigger != NULL. */ | |
430 | if (probe->index < 0 || probe->index > 7) { | |
431 | sr_err("la8: %s: invalid probe index %d, must be " | |
432 | "between 0 and 7", __func__, probe->index); | |
433 | return SR_ERR; | |
434 | } | |
435 | ||
436 | probe_bit = (1 << (probe->index - 1)); | |
437 | ||
438 | /* Configure the probe's trigger mask and trigger pattern. */ | |
439 | for (tc = probe->trigger; tc && *tc; tc++) { | |
ea9cfed7 | 440 | ctx->trigger_mask |= probe_bit; |
ecaf59db UH |
441 | |
442 | /* Sanity check, LA8 only supports low/high trigger. */ | |
443 | if (*tc != '0' && *tc != '1') { | |
444 | sr_err("la8: %s: invalid trigger '%c', only " | |
445 | "'0'/'1' supported", __func__, *tc); | |
446 | return SR_ERR; | |
447 | } | |
448 | ||
449 | if (*tc == '1') | |
ea9cfed7 | 450 | ctx->trigger_pattern |= probe_bit; |
ecaf59db UH |
451 | } |
452 | } | |
453 | ||
454 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
ea9cfed7 | 455 | __func__, ctx->trigger_mask, ctx->trigger_pattern); |
ecaf59db UH |
456 | |
457 | return SR_OK; | |
458 | } | |
459 | ||
bb7ef793 | 460 | static int hw_init(const char *devinfo) |
f4314d7e UH |
461 | { |
462 | int ret; | |
d68e2d1a | 463 | struct sr_dev_inst *sdi; |
ea9cfed7 | 464 | struct context *ctx; |
f4314d7e | 465 | |
f4314d7e | 466 | /* Avoid compiler errors. */ |
bb7ef793 | 467 | (void)devinfo; |
f4314d7e UH |
468 | |
469 | /* Allocate memory for our private driver context. */ | |
ea9cfed7 UH |
470 | if (!(ctx = g_try_malloc(sizeof(struct context)))) { |
471 | sr_err("la8: %s: struct context malloc failed", __func__); | |
f4314d7e UH |
472 | goto err_free_nothing; |
473 | } | |
474 | ||
475 | /* Set some sane defaults. */ | |
ea9cfed7 UH |
476 | ctx->ftdic = NULL; |
477 | ctx->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
478 | ctx->limit_msec = 0; | |
479 | ctx->limit_samples = 0; | |
480 | ctx->session_id = NULL; | |
481 | memset(ctx->mangled_buf, 0, BS); | |
482 | ctx->final_buf = NULL; | |
483 | ctx->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
484 | ctx->trigger_mask = 0x00; /* All probes are "don't care". */ | |
485 | ctx->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
486 | ctx->trigger_found = 0; | |
487 | ctx->done = 0; | |
488 | ctx->block_counter = 0; | |
489 | ctx->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
f4314d7e | 490 | |
f4314d7e | 491 | /* Allocate memory where we'll store the de-mangled data. */ |
ea9cfed7 | 492 | if (!(ctx->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 493 | sr_err("la8: %s: final_buf malloc failed", __func__); |
ea9cfed7 | 494 | goto err_free_ctx; |
f4314d7e UH |
495 | } |
496 | ||
497 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
ea9cfed7 | 498 | if (!(ctx->ftdic = ftdi_new())) { |
30939770 | 499 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
500 | goto err_free_final_buf; |
501 | } | |
502 | ||
503 | /* Check for the device and temporarily open it. */ | |
ea9cfed7 | 504 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, |
f4314d7e | 505 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { |
ea9cfed7 | 506 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e UH |
507 | goto err_free_ftdic; |
508 | } | |
b08024a8 | 509 | sr_dbg("la8: found device"); |
f4314d7e UH |
510 | |
511 | /* Register the device with libsigrok. */ | |
d3683c42 | 512 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, |
f4314d7e UH |
513 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); |
514 | if (!sdi) { | |
d68e2d1a | 515 | sr_err("la8: %s: sr_dev_inst_new failed", __func__); |
f4314d7e UH |
516 | goto err_close_ftdic; |
517 | } | |
518 | ||
ea9cfed7 | 519 | sdi->priv = ctx; |
f4314d7e | 520 | |
d68e2d1a | 521 | dev_insts = g_slist_append(dev_insts, sdi); |
f4314d7e | 522 | |
d1175d5f | 523 | sr_spew("la8: %s finished successfully", __func__); |
f4314d7e UH |
524 | |
525 | /* Close device. We'll reopen it again when we need it. */ | |
ea9cfed7 | 526 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e | 527 | |
f4314d7e UH |
528 | return 1; |
529 | ||
530 | err_close_ftdic: | |
ea9cfed7 | 531 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e | 532 | err_free_ftdic: |
ea9cfed7 | 533 | free(ctx->ftdic); /* NOT g_free()! */ |
f4314d7e | 534 | err_free_final_buf: |
ea9cfed7 UH |
535 | g_free(ctx->final_buf); |
536 | err_free_ctx: | |
537 | g_free(ctx); | |
f4314d7e | 538 | err_free_nothing: |
e7bad063 | 539 | |
f4314d7e UH |
540 | return 0; |
541 | } | |
542 | ||
e7eb703f | 543 | static int hw_dev_open(int dev_index) |
f4314d7e UH |
544 | { |
545 | int ret; | |
d68e2d1a | 546 | struct sr_dev_inst *sdi; |
ea9cfed7 | 547 | struct context *ctx; |
f4314d7e | 548 | |
bb7ef793 | 549 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 550 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 551 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
552 | } |
553 | ||
ea9cfed7 | 554 | if (!(ctx = sdi->priv)) { |
30939770 | 555 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 556 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
557 | } |
558 | ||
b08024a8 | 559 | sr_dbg("la8: opening device"); |
f4314d7e UH |
560 | |
561 | /* Open the device. */ | |
ea9cfed7 | 562 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, |
f4314d7e | 563 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { |
30939770 | 564 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
ea9cfed7 UH |
565 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
566 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
f4314d7e UH |
567 | return SR_ERR; |
568 | } | |
b08024a8 | 569 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
570 | |
571 | /* Purge RX/TX buffers in the FTDI chip. */ | |
ea9cfed7 | 572 | if ((ret = ftdi_usb_purge_buffers(ctx->ftdic)) < 0) { |
30939770 | 573 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
ea9cfed7 UH |
574 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
575 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
e7eb703f | 576 | goto err_dev_open_close_ftdic; |
f4314d7e | 577 | } |
b08024a8 | 578 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
579 | |
580 | /* Enable flow control in the FTDI chip. */ | |
ea9cfed7 | 581 | if ((ret = ftdi_setflowctrl(ctx->ftdic, SIO_RTS_CTS_HS)) < 0) { |
30939770 | 582 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
ea9cfed7 UH |
583 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
584 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
e7eb703f | 585 | goto err_dev_open_close_ftdic; |
f4314d7e | 586 | } |
b08024a8 | 587 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
588 | |
589 | /* Wait 100ms. */ | |
590 | g_usleep(100 * 1000); | |
591 | ||
592 | sdi->status = SR_ST_ACTIVE; | |
593 | ||
594 | return SR_OK; | |
595 | ||
e7eb703f | 596 | err_dev_open_close_ftdic: |
ea9cfed7 | 597 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e UH |
598 | return SR_ERR; |
599 | } | |
600 | ||
d68e2d1a | 601 | static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate) |
f4314d7e | 602 | { |
ea9cfed7 | 603 | struct context *ctx; |
f4314d7e | 604 | |
47671b0f | 605 | /* Note: Caller checked that sdi and sdi->priv != NULL. */ |
f4314d7e | 606 | |
47671b0f | 607 | ctx = sdi->priv; |
f4314d7e | 608 | |
d1175d5f | 609 | sr_spew("la8: setting samplerate"); |
f4314d7e UH |
610 | |
611 | fill_supported_samplerates_if_needed(); | |
612 | ||
613 | /* Check if this is a samplerate supported by the hardware. */ | |
614 | if (!is_valid_samplerate(samplerate)) | |
615 | return SR_ERR; | |
616 | ||
617 | /* Set the new samplerate. */ | |
ea9cfed7 | 618 | ctx->cur_samplerate = samplerate; |
f4314d7e | 619 | |
ea9cfed7 | 620 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", ctx->cur_samplerate); |
f4314d7e UH |
621 | |
622 | return SR_OK; | |
623 | } | |
624 | ||
e7eb703f | 625 | static int hw_dev_close(int dev_index) |
f4314d7e | 626 | { |
d68e2d1a | 627 | struct sr_dev_inst *sdi; |
ea9cfed7 | 628 | struct context *ctx; |
f4314d7e | 629 | |
bb7ef793 | 630 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 631 | sr_err("la8: %s: sdi was NULL", __func__); |
697785d1 | 632 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
633 | } |
634 | ||
ea9cfed7 | 635 | if (!(ctx = sdi->priv)) { |
30939770 | 636 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
697785d1 | 637 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
638 | } |
639 | ||
b08024a8 | 640 | sr_dbg("la8: closing device"); |
f4314d7e UH |
641 | |
642 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 643 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
697785d1 | 644 | /* TODO: Really ignore errors here, or return SR_ERR? */ |
ea9cfed7 | 645 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e | 646 | } else { |
d1175d5f | 647 | sr_spew("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
648 | } |
649 | ||
650 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
651 | |
652 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
ea9cfed7 | 653 | g_free(ctx->final_buf); |
697785d1 UH |
654 | |
655 | return SR_OK; | |
f4314d7e UH |
656 | } |
657 | ||
57ab7d9f | 658 | static int hw_cleanup(void) |
f4314d7e UH |
659 | { |
660 | GSList *l; | |
d68e2d1a | 661 | struct sr_dev_inst *sdi; |
57ab7d9f | 662 | int ret = SR_OK; |
f4314d7e | 663 | |
f4314d7e | 664 | /* Properly close all devices. */ |
d68e2d1a | 665 | for (l = dev_insts; l; l = l->next) { |
57ab7d9f UH |
666 | if (!(sdi = l->data)) { |
667 | /* Log error, but continue cleaning up the rest. */ | |
133a37bf | 668 | sr_err("la8: %s: sdi was NULL, continuing", __func__); |
57ab7d9f | 669 | ret = SR_ERR_BUG; |
f4314d7e UH |
670 | continue; |
671 | } | |
d3683c42 | 672 | sr_dev_inst_free(sdi); /* Returns void. */ |
f4314d7e | 673 | } |
d68e2d1a UH |
674 | g_slist_free(dev_insts); /* Returns void. */ |
675 | dev_insts = NULL; | |
57ab7d9f UH |
676 | |
677 | return ret; | |
f4314d7e UH |
678 | } |
679 | ||
5097b0d0 | 680 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
f4314d7e | 681 | { |
d68e2d1a | 682 | struct sr_dev_inst *sdi; |
ea9cfed7 | 683 | struct context *ctx; |
f4314d7e UH |
684 | void *info; |
685 | ||
d1175d5f | 686 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 687 | |
bb7ef793 | 688 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 689 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
690 | return NULL; |
691 | } | |
692 | ||
ea9cfed7 | 693 | if (!(ctx = sdi->priv)) { |
30939770 | 694 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
695 | return NULL; |
696 | } | |
697 | ||
bb7ef793 | 698 | switch (dev_info_id) { |
1d9a8a5f | 699 | case SR_DI_INST: |
f4314d7e UH |
700 | info = sdi; |
701 | break; | |
702 | case SR_DI_NUM_PROBES: | |
703 | info = GINT_TO_POINTER(NUM_PROBES); | |
704 | break; | |
464d12c7 KS |
705 | case SR_DI_PROBE_NAMES: |
706 | info = probe_names; | |
707 | break; | |
f4314d7e UH |
708 | case SR_DI_SAMPLERATES: |
709 | fill_supported_samplerates_if_needed(); | |
710 | info = &samplerates; | |
711 | break; | |
712 | case SR_DI_TRIGGER_TYPES: | |
713 | info = (char *)TRIGGER_TYPES; | |
714 | break; | |
715 | case SR_DI_CUR_SAMPLERATE: | |
ea9cfed7 | 716 | info = &ctx->cur_samplerate; |
f4314d7e UH |
717 | break; |
718 | default: | |
719 | /* Unknown device info ID, return NULL. */ | |
30939770 | 720 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
721 | info = NULL; |
722 | break; | |
723 | } | |
724 | ||
725 | return info; | |
726 | } | |
727 | ||
e7eb703f | 728 | static int hw_dev_status_get(int dev_index) |
f4314d7e | 729 | { |
d68e2d1a | 730 | struct sr_dev_inst *sdi; |
f4314d7e | 731 | |
bb7ef793 | 732 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
133a37bf | 733 | sr_err("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
734 | return SR_ST_NOT_FOUND; |
735 | } | |
736 | ||
b08024a8 | 737 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
738 | |
739 | return sdi->status; | |
740 | } | |
741 | ||
ffedd0bf | 742 | static int *hw_hwcap_get_all(void) |
f4314d7e | 743 | { |
d1175d5f | 744 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 745 | |
ffedd0bf | 746 | return hwcaps; |
f4314d7e UH |
747 | } |
748 | ||
a9a245b4 | 749 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) |
f4314d7e | 750 | { |
d68e2d1a | 751 | struct sr_dev_inst *sdi; |
ea9cfed7 | 752 | struct context *ctx; |
f4314d7e | 753 | |
d1175d5f | 754 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 755 | |
bb7ef793 | 756 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 757 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 758 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
759 | } |
760 | ||
ea9cfed7 | 761 | if (!(ctx = sdi->priv)) { |
30939770 | 762 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 763 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
764 | } |
765 | ||
ffedd0bf | 766 | switch (hwcap) { |
f4314d7e UH |
767 | case SR_HWCAP_SAMPLERATE: |
768 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
769 | return SR_ERR; | |
ea9cfed7 | 770 | sr_dbg("la8: SAMPLERATE = %" PRIu64, ctx->cur_samplerate); |
f4314d7e UH |
771 | break; |
772 | case SR_HWCAP_PROBECONFIG: | |
ea9cfed7 | 773 | if (configure_probes(ctx, (GSList *)value) != SR_OK) { |
ecaf59db UH |
774 | sr_err("la8: %s: probe config failed", __func__); |
775 | return SR_ERR; | |
776 | } | |
f4314d7e UH |
777 | break; |
778 | case SR_HWCAP_LIMIT_MSEC: | |
779 | if (*(uint64_t *)value == 0) { | |
30939770 | 780 | sr_err("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
781 | return SR_ERR; |
782 | } | |
ea9cfed7 UH |
783 | ctx->limit_msec = *(uint64_t *)value; |
784 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, ctx->limit_msec); | |
f4314d7e UH |
785 | break; |
786 | case SR_HWCAP_LIMIT_SAMPLES: | |
787 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
30939770 | 788 | sr_err("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
789 | return SR_ERR; |
790 | } | |
ea9cfed7 UH |
791 | ctx->limit_samples = *(uint64_t *)value; |
792 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, ctx->limit_samples); | |
f4314d7e UH |
793 | break; |
794 | default: | |
795 | /* Unknown capability, return SR_ERR. */ | |
30939770 | 796 | sr_err("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
797 | return SR_ERR; |
798 | break; | |
799 | } | |
800 | ||
801 | return SR_OK; | |
802 | } | |
803 | ||
804 | /** | |
a76983fd | 805 | * Get a block of data from the LA8. |
f4314d7e | 806 | * |
ea9cfed7 | 807 | * @param ctx The struct containing private per-device-instance data. |
f4314d7e UH |
808 | * @return SR_OK upon success, or SR_ERR upon errors. |
809 | */ | |
ea9cfed7 | 810 | static int la8_read_block(struct context *ctx) |
f4314d7e UH |
811 | { |
812 | int i, byte_offset, m, mi, p, index, bytes_read; | |
813 | time_t now; | |
814 | ||
47671b0f | 815 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ |
f4314d7e | 816 | |
ea9cfed7 | 817 | sr_spew("la8: %s: reading block %d", __func__, ctx->block_counter); |
f4314d7e | 818 | |
ea9cfed7 | 819 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); |
f4314d7e UH |
820 | |
821 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
ea9cfed7 | 822 | if ((bytes_read == 0) && (ctx->block_counter == 0)) { |
f4314d7e | 823 | do { |
d1175d5f | 824 | sr_spew("la8: %s: reading block 0 again", __func__); |
ea9cfed7 | 825 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); |
f4314d7e UH |
826 | /* TODO: How to handle read errors here? */ |
827 | now = time(NULL); | |
ea9cfed7 | 828 | } while ((ctx->done > now) && (bytes_read == 0)); |
f4314d7e UH |
829 | } |
830 | ||
831 | /* Check if block read was successful or a timeout occured. */ | |
a76983fd | 832 | if (bytes_read != BS) { |
133a37bf | 833 | sr_err("la8: %s: trigger timed out", __func__); |
ea9cfed7 | 834 | (void) la8_reset(ctx); /* Ignore errors. */ |
f4314d7e UH |
835 | return SR_ERR; |
836 | } | |
837 | ||
838 | /* De-mangle the data. */ | |
ea9cfed7 UH |
839 | sr_spew("la8: de-mangling samples of block %d", ctx->block_counter); |
840 | byte_offset = ctx->block_counter * BS; | |
f4314d7e UH |
841 | m = byte_offset / (1024 * 1024); |
842 | mi = m * (1024 * 1024); | |
a76983fd | 843 | for (i = 0; i < BS; i++) { |
f4314d7e UH |
844 | p = i & (1 << 0); |
845 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
ea9cfed7 UH |
846 | index += (ctx->divcount == 0) ? p : (1 - p); |
847 | ctx->final_buf[index] = ctx->mangled_buf[i]; | |
f4314d7e UH |
848 | } |
849 | ||
850 | return SR_OK; | |
851 | } | |
852 | ||
ea9cfed7 | 853 | static void send_block_to_session_bus(struct context *ctx, int block) |
4d7b525a UH |
854 | { |
855 | int i; | |
856 | uint8_t sample, expected_sample; | |
857 | struct sr_datafeed_packet packet; | |
9c939c51 | 858 | struct sr_datafeed_logic logic; |
4d7b525a UH |
859 | int trigger_point; /* Relative trigger point (in this block). */ |
860 | ||
ea9cfed7 | 861 | /* Note: No sanity checks on ctx/block, caller is responsible. */ |
4d7b525a UH |
862 | |
863 | /* Check if we can find the trigger condition in this block. */ | |
864 | trigger_point = -1; | |
ea9cfed7 | 865 | expected_sample = ctx->trigger_pattern & ctx->trigger_mask; |
a76983fd | 866 | for (i = 0; i < BS; i++) { |
4d7b525a | 867 | /* Don't continue if the trigger was found previously. */ |
ea9cfed7 | 868 | if (ctx->trigger_found) |
4d7b525a UH |
869 | break; |
870 | ||
f36cbf60 UH |
871 | /* |
872 | * Also, don't continue if triggers are "don't care", i.e. if | |
873 | * no trigger conditions were specified by the user. In that | |
874 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
875 | */ | |
ea9cfed7 | 876 | if (ctx->trigger_mask == 0x00) |
f36cbf60 UH |
877 | break; |
878 | ||
ea9cfed7 | 879 | sample = *(ctx->final_buf + (block * BS) + i); |
4d7b525a | 880 | |
ea9cfed7 | 881 | if ((sample & ctx->trigger_mask) == expected_sample) { |
4d7b525a | 882 | trigger_point = i; |
ea9cfed7 | 883 | ctx->trigger_found = 1; |
4d7b525a UH |
884 | break; |
885 | } | |
886 | } | |
887 | ||
888 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
889 | if (trigger_point == -1) { | |
a76983fd | 890 | /* Send an SR_DF_LOGIC packet to the session bus. */ |
d1175d5f UH |
891 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " |
892 | "block %d", BS, block); | |
4d7b525a | 893 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
894 | packet.payload = &logic; |
895 | logic.length = BS; | |
896 | logic.unitsize = 1; | |
ea9cfed7 UH |
897 | logic.data = ctx->final_buf + (block * BS); |
898 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
899 | return; |
900 | } | |
901 | ||
902 | /* | |
903 | * We found the trigger, so some special handling is needed. We have | |
904 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
905 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
906 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
907 | */ | |
908 | ||
909 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
910 | ||
911 | /* If at least one sample is located before the trigger... */ | |
912 | if (trigger_point > 0) { | |
913 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
d1175d5f | 914 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " |
f36cbf60 | 915 | "start = %d, length = %d", block * BS, trigger_point); |
4d7b525a | 916 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
917 | packet.payload = &logic; |
918 | logic.length = trigger_point; | |
919 | logic.unitsize = 1; | |
ea9cfed7 UH |
920 | logic.data = ctx->final_buf + (block * BS); |
921 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
922 | } |
923 | ||
924 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
d1175d5f | 925 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", |
f36cbf60 | 926 | (block * BS) + trigger_point); |
4d7b525a | 927 | packet.type = SR_DF_TRIGGER; |
4d7b525a | 928 | packet.payload = NULL; |
ea9cfed7 | 929 | sr_session_bus(ctx->session_id, &packet); |
4d7b525a UH |
930 | |
931 | /* If at least one sample is located after the trigger... */ | |
a76983fd | 932 | if (trigger_point < (BS - 1)) { |
4d7b525a | 933 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ |
d1175d5f | 934 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " |
896a19fd | 935 | "start = %d, length = %d", |
f36cbf60 | 936 | (block * BS) + trigger_point, BS - trigger_point); |
4d7b525a | 937 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
938 | packet.payload = &logic; |
939 | logic.length = BS - trigger_point; | |
940 | logic.unitsize = 1; | |
ea9cfed7 UH |
941 | logic.data = ctx->final_buf + (block * BS) + trigger_point; |
942 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
943 | } |
944 | } | |
945 | ||
9c939c51 | 946 | static int receive_data(int fd, int revents, void *session_data) |
f4314d7e UH |
947 | { |
948 | int i, ret; | |
d68e2d1a | 949 | struct sr_dev_inst *sdi; |
ea9cfed7 | 950 | struct context *ctx; |
f4314d7e UH |
951 | |
952 | /* Avoid compiler errors. */ | |
cb93f8a9 UH |
953 | (void)fd; |
954 | (void)revents; | |
f4314d7e | 955 | |
9c939c51 | 956 | if (!(sdi = session_data)) { |
ae32d7d7 | 957 | sr_err("la8: %s: session_data was NULL", __func__); |
f4314d7e UH |
958 | return FALSE; |
959 | } | |
960 | ||
ea9cfed7 | 961 | if (!(ctx = sdi->priv)) { |
30939770 | 962 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
963 | return FALSE; |
964 | } | |
965 | ||
47671b0f UH |
966 | if (!ctx->ftdic) { |
967 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
968 | return FALSE; | |
969 | } | |
970 | ||
a76983fd | 971 | /* Get one block of data. */ |
ea9cfed7 | 972 | if ((ret = la8_read_block(ctx)) < 0) { |
30939770 | 973 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
69040b7c | 974 | hw_dev_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
975 | return FALSE; |
976 | } | |
977 | ||
a76983fd | 978 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ |
ea9cfed7 UH |
979 | if (ctx->block_counter != (NUM_BLOCKS - 1)) { |
980 | ctx->block_counter++; | |
f4314d7e UH |
981 | return TRUE; |
982 | } | |
983 | ||
b08024a8 | 984 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
985 | |
986 | /* All data was received and demangled, send it to the session bus. */ | |
a76983fd | 987 | for (i = 0; i < NUM_BLOCKS; i++) |
ea9cfed7 | 988 | send_block_to_session_bus(ctx, i); |
f4314d7e | 989 | |
69040b7c | 990 | hw_dev_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
991 | |
992 | // return FALSE; /* FIXME? */ | |
993 | return TRUE; | |
994 | } | |
995 | ||
69040b7c | 996 | static int hw_dev_acquisition_start(int dev_index, gpointer session_data) |
f4314d7e | 997 | { |
d68e2d1a | 998 | struct sr_dev_inst *sdi; |
ea9cfed7 | 999 | struct context *ctx; |
f4314d7e UH |
1000 | struct sr_datafeed_packet packet; |
1001 | struct sr_datafeed_header header; | |
1002 | uint8_t buf[4]; | |
1003 | int bytes_written; | |
1004 | ||
d1175d5f | 1005 | sr_spew("la8: entering %s", __func__); |
f4314d7e | 1006 | |
bb7ef793 | 1007 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1008 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 1009 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1010 | } |
1011 | ||
ea9cfed7 | 1012 | if (!(ctx = sdi->priv)) { |
30939770 | 1013 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 1014 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1015 | } |
1016 | ||
ea9cfed7 UH |
1017 | if (!ctx->ftdic) { |
1018 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 1019 | return SR_ERR_ARG; |
f4314d7e UH |
1020 | } |
1021 | ||
ea9cfed7 UH |
1022 | ctx->divcount = samplerate_to_divcount(ctx->cur_samplerate); |
1023 | if (ctx->divcount == 0xff) { | |
30939770 | 1024 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
1025 | return SR_ERR; |
1026 | } | |
1027 | ||
1028 | /* Fill acquisition parameters into buf[]. */ | |
ea9cfed7 | 1029 | buf[0] = ctx->divcount; |
f4314d7e | 1030 | buf[1] = 0xff; /* This byte must always be 0xff. */ |
ea9cfed7 UH |
1031 | buf[2] = ctx->trigger_pattern; |
1032 | buf[3] = ctx->trigger_mask; | |
f4314d7e UH |
1033 | |
1034 | /* Start acquisition. */ | |
ea9cfed7 | 1035 | bytes_written = la8_write(ctx, buf, 4); |
f4314d7e UH |
1036 | |
1037 | if (bytes_written < 0) { | |
30939770 | 1038 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1039 | return SR_ERR; |
1040 | } else if (bytes_written != 4) { | |
30939770 | 1041 | sr_err("la8: acquisition failed to start"); |
f4314d7e UH |
1042 | return SR_ERR; /* TODO: Other error and return code? */ |
1043 | } | |
1044 | ||
b08024a8 | 1045 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e | 1046 | |
ea9cfed7 | 1047 | ctx->session_id = session_data; |
f4314d7e UH |
1048 | |
1049 | /* Send header packet to the session bus. */ | |
b08024a8 | 1050 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e | 1051 | packet.type = SR_DF_HEADER; |
f4314d7e UH |
1052 | packet.payload = &header; |
1053 | header.feed_version = 1; | |
1054 | gettimeofday(&header.starttime, NULL); | |
ea9cfed7 | 1055 | header.samplerate = ctx->cur_samplerate; |
4bc5fd45 | 1056 | header.num_logic_probes = NUM_PROBES; |
9c939c51 | 1057 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1058 | |
1059 | /* Time when we should be done (for detecting trigger timeouts). */ | |
ea9cfed7 UH |
1060 | ctx->done = (ctx->divcount + 1) * 0.08388608 + time(NULL) |
1061 | + ctx->trigger_timeout; | |
1062 | ctx->block_counter = 0; | |
1063 | ctx->trigger_found = 0; | |
f4314d7e UH |
1064 | |
1065 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1066 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1067 | ||
1068 | return SR_OK; | |
1069 | } | |
1070 | ||
69040b7c | 1071 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data) |
f4314d7e | 1072 | { |
d68e2d1a | 1073 | struct sr_dev_inst *sdi; |
ea9cfed7 | 1074 | struct context *ctx; |
f4314d7e UH |
1075 | struct sr_datafeed_packet packet; |
1076 | ||
b08024a8 | 1077 | sr_dbg("la8: stopping acquisition"); |
f4314d7e | 1078 | |
bb7ef793 | 1079 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1080 | sr_err("la8: %s: sdi was NULL", __func__); |
3010f21c | 1081 | return SR_ERR_BUG; |
f4314d7e UH |
1082 | } |
1083 | ||
ea9cfed7 | 1084 | if (!(ctx = sdi->priv)) { |
30939770 | 1085 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
3010f21c | 1086 | return SR_ERR_BUG; |
f4314d7e UH |
1087 | } |
1088 | ||
f4314d7e | 1089 | /* Send end packet to the session bus. */ |
b08024a8 | 1090 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e | 1091 | packet.type = SR_DF_END; |
9c939c51 | 1092 | sr_session_bus(session_data, &packet); |
3010f21c UH |
1093 | |
1094 | return SR_OK; | |
f4314d7e UH |
1095 | } |
1096 | ||
bb7ef793 | 1097 | SR_PRIV struct sr_dev_plugin chronovu_la8_plugin_info = { |
f4314d7e UH |
1098 | .name = "chronovu-la8", |
1099 | .longname = "ChronoVu LA8", | |
1100 | .api_version = 1, | |
1101 | .init = hw_init, | |
1102 | .cleanup = hw_cleanup, | |
e7eb703f UH |
1103 | .dev_open = hw_dev_open, |
1104 | .dev_close = hw_dev_close, | |
5097b0d0 | 1105 | .dev_info_get = hw_dev_info_get, |
e7eb703f | 1106 | .dev_status_get = hw_dev_status_get, |
ffedd0bf | 1107 | .hwcap_get_all = hw_hwcap_get_all, |
a9a245b4 | 1108 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
1109 | .dev_acquisition_start = hw_dev_acquisition_start, |
1110 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
f4314d7e | 1111 | }; |