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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. |
04254c3f | 311 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
f4314d7e | 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. */ |
04254c3f | 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. */ | |
04254c3f | 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 | ||
04254c3f | 350 | /* Close USB device, deinitialize and free the FTDI context. */ |
ea9cfed7 UH |
351 | ftdi_free(ctx->ftdic); /* Returns void. */ |
352 | ctx->ftdic = NULL; | |
f4314d7e UH |
353 | |
354 | return SR_OK; | |
355 | } | |
356 | ||
357 | /** | |
358 | * Reset the ChronoVu LA8. | |
359 | * | |
360 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
361 | * | |
ea9cfed7 | 362 | * @param ctx The struct containing private per-device-instance data. |
f4314d7e UH |
363 | * @return SR_OK upon success, SR_ERR upon failure. |
364 | */ | |
ea9cfed7 | 365 | static int la8_reset(struct context *ctx) |
f4314d7e | 366 | { |
a76983fd | 367 | uint8_t buf[BS]; |
f4314d7e UH |
368 | time_t done, now; |
369 | int bytes_read; | |
370 | ||
ea9cfed7 UH |
371 | if (!ctx) { |
372 | sr_err("la8: %s: ctx was NULL", __func__); | |
8703f512 | 373 | return SR_ERR_ARG; |
f4314d7e UH |
374 | } |
375 | ||
ea9cfed7 UH |
376 | if (!ctx->ftdic) { |
377 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 378 | return SR_ERR_ARG; |
f4314d7e UH |
379 | } |
380 | ||
04254c3f | 381 | sr_dbg("la8: Resetting the device."); |
f4314d7e UH |
382 | |
383 | /* | |
384 | * Purge pending read data from the FTDI hardware FIFO until | |
385 | * no more data is left, or a timeout occurs (after 20s). | |
386 | */ | |
387 | done = 20 + time(NULL); | |
388 | do { | |
389 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
ea9cfed7 | 390 | bytes_read = la8_read(ctx, (uint8_t *)&buf, BS); |
f4314d7e UH |
391 | now = time(NULL); |
392 | } while ((done > now) && (bytes_read > 0)); | |
393 | ||
394 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
ea9cfed7 | 395 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e | 396 | |
04254c3f | 397 | sr_dbg("la8: Device reset finished."); |
f4314d7e UH |
398 | |
399 | return SR_OK; | |
400 | } | |
401 | ||
ea9cfed7 | 402 | static int configure_probes(struct context *ctx, GSList *probes) |
ecaf59db UH |
403 | { |
404 | struct sr_probe *probe; | |
405 | GSList *l; | |
406 | uint8_t probe_bit; | |
407 | char *tc; | |
408 | ||
47671b0f UH |
409 | /* Note: Caller checked that ctx != NULL. */ |
410 | ||
ea9cfed7 UH |
411 | ctx->trigger_pattern = 0; |
412 | ctx->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
ecaf59db UH |
413 | |
414 | for (l = probes; l; l = l->next) { | |
415 | probe = (struct sr_probe *)l->data; | |
416 | ||
417 | if (!probe) { | |
418 | sr_err("la8: %s: probe was NULL", __func__); | |
419 | return SR_ERR; | |
420 | } | |
421 | ||
422 | /* Skip disabled probes. */ | |
423 | if (!probe->enabled) | |
424 | continue; | |
425 | ||
426 | /* Skip (enabled) probes with no configured trigger. */ | |
427 | if (!probe->trigger) | |
428 | continue; | |
429 | ||
430 | /* Note: Must only be run if probe->trigger != NULL. */ | |
431 | if (probe->index < 0 || probe->index > 7) { | |
432 | sr_err("la8: %s: invalid probe index %d, must be " | |
433 | "between 0 and 7", __func__, probe->index); | |
434 | return SR_ERR; | |
435 | } | |
436 | ||
437 | probe_bit = (1 << (probe->index - 1)); | |
438 | ||
439 | /* Configure the probe's trigger mask and trigger pattern. */ | |
440 | for (tc = probe->trigger; tc && *tc; tc++) { | |
ea9cfed7 | 441 | ctx->trigger_mask |= probe_bit; |
ecaf59db UH |
442 | |
443 | /* Sanity check, LA8 only supports low/high trigger. */ | |
444 | if (*tc != '0' && *tc != '1') { | |
445 | sr_err("la8: %s: invalid trigger '%c', only " | |
446 | "'0'/'1' supported", __func__, *tc); | |
447 | return SR_ERR; | |
448 | } | |
449 | ||
450 | if (*tc == '1') | |
ea9cfed7 | 451 | ctx->trigger_pattern |= probe_bit; |
ecaf59db UH |
452 | } |
453 | } | |
454 | ||
04254c3f UH |
455 | sr_dbg("la8: trigger_mask = 0x%x, trigger_pattern = 0x%x", |
456 | ctx->trigger_mask, ctx->trigger_pattern); | |
ecaf59db UH |
457 | |
458 | return SR_OK; | |
459 | } | |
460 | ||
bb7ef793 | 461 | static int hw_init(const char *devinfo) |
f4314d7e UH |
462 | { |
463 | int ret; | |
d68e2d1a | 464 | struct sr_dev_inst *sdi; |
ea9cfed7 | 465 | struct context *ctx; |
f4314d7e | 466 | |
f4314d7e | 467 | /* Avoid compiler errors. */ |
bb7ef793 | 468 | (void)devinfo; |
f4314d7e UH |
469 | |
470 | /* Allocate memory for our private driver context. */ | |
ea9cfed7 UH |
471 | if (!(ctx = g_try_malloc(sizeof(struct context)))) { |
472 | sr_err("la8: %s: struct context malloc failed", __func__); | |
f4314d7e UH |
473 | goto err_free_nothing; |
474 | } | |
475 | ||
476 | /* Set some sane defaults. */ | |
ea9cfed7 UH |
477 | ctx->ftdic = NULL; |
478 | ctx->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
479 | ctx->limit_msec = 0; | |
480 | ctx->limit_samples = 0; | |
481 | ctx->session_id = NULL; | |
482 | memset(ctx->mangled_buf, 0, BS); | |
483 | ctx->final_buf = NULL; | |
484 | ctx->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
485 | ctx->trigger_mask = 0x00; /* All probes are "don't care". */ | |
486 | ctx->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
487 | ctx->trigger_found = 0; | |
488 | ctx->done = 0; | |
489 | ctx->block_counter = 0; | |
490 | ctx->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
f4314d7e | 491 | |
f4314d7e | 492 | /* Allocate memory where we'll store the de-mangled data. */ |
ea9cfed7 | 493 | if (!(ctx->final_buf = g_try_malloc(SDRAM_SIZE))) { |
30939770 | 494 | sr_err("la8: %s: final_buf malloc failed", __func__); |
ea9cfed7 | 495 | goto err_free_ctx; |
f4314d7e UH |
496 | } |
497 | ||
498 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
ea9cfed7 | 499 | if (!(ctx->ftdic = ftdi_new())) { |
30939770 | 500 | sr_err("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
501 | goto err_free_final_buf; |
502 | } | |
503 | ||
504 | /* Check for the device and temporarily open it. */ | |
ea9cfed7 | 505 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, |
f4314d7e | 506 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { |
ea9cfed7 | 507 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e UH |
508 | goto err_free_ftdic; |
509 | } | |
04254c3f UH |
510 | sr_dbg("la8: Found LA8 device (%04x:%04x).", USB_VENDOR_ID, |
511 | USB_PRODUCT_ID); | |
f4314d7e UH |
512 | |
513 | /* Register the device with libsigrok. */ | |
d3683c42 | 514 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, |
f4314d7e UH |
515 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); |
516 | if (!sdi) { | |
d68e2d1a | 517 | sr_err("la8: %s: sr_dev_inst_new failed", __func__); |
f4314d7e UH |
518 | goto err_close_ftdic; |
519 | } | |
520 | ||
ea9cfed7 | 521 | sdi->priv = ctx; |
f4314d7e | 522 | |
d68e2d1a | 523 | dev_insts = g_slist_append(dev_insts, sdi); |
f4314d7e | 524 | |
04254c3f | 525 | sr_spew("la8: Device init successful."); |
f4314d7e UH |
526 | |
527 | /* Close device. We'll reopen it again when we need it. */ | |
ea9cfed7 | 528 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e | 529 | |
f4314d7e UH |
530 | return 1; |
531 | ||
532 | err_close_ftdic: | |
ea9cfed7 | 533 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e | 534 | err_free_ftdic: |
ea9cfed7 | 535 | free(ctx->ftdic); /* NOT g_free()! */ |
f4314d7e | 536 | err_free_final_buf: |
ea9cfed7 UH |
537 | g_free(ctx->final_buf); |
538 | err_free_ctx: | |
539 | g_free(ctx); | |
f4314d7e | 540 | err_free_nothing: |
e7bad063 | 541 | |
f4314d7e UH |
542 | return 0; |
543 | } | |
544 | ||
e7eb703f | 545 | static int hw_dev_open(int dev_index) |
f4314d7e UH |
546 | { |
547 | int ret; | |
d68e2d1a | 548 | struct sr_dev_inst *sdi; |
ea9cfed7 | 549 | struct context *ctx; |
f4314d7e | 550 | |
bb7ef793 | 551 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 552 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 553 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
554 | } |
555 | ||
ea9cfed7 | 556 | if (!(ctx = sdi->priv)) { |
30939770 | 557 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 558 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
559 | } |
560 | ||
04254c3f UH |
561 | sr_dbg("la8: Opening LA8 device (%04x:%04x).", USB_VENDOR_ID, |
562 | USB_PRODUCT_ID); | |
f4314d7e UH |
563 | |
564 | /* Open the device. */ | |
ea9cfed7 | 565 | if ((ret = ftdi_usb_open_desc(ctx->ftdic, USB_VENDOR_ID, |
f4314d7e | 566 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { |
30939770 | 567 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
ea9cfed7 UH |
568 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
569 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
f4314d7e UH |
570 | return SR_ERR; |
571 | } | |
04254c3f | 572 | sr_dbg("la8: Device opened successfully."); |
f4314d7e UH |
573 | |
574 | /* Purge RX/TX buffers in the FTDI chip. */ | |
ea9cfed7 | 575 | if ((ret = ftdi_usb_purge_buffers(ctx->ftdic)) < 0) { |
30939770 | 576 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
ea9cfed7 UH |
577 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
578 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
e7eb703f | 579 | goto err_dev_open_close_ftdic; |
f4314d7e | 580 | } |
04254c3f | 581 | sr_dbg("la8: FTDI buffers purged successfully."); |
f4314d7e UH |
582 | |
583 | /* Enable flow control in the FTDI chip. */ | |
ea9cfed7 | 584 | if ((ret = ftdi_setflowctrl(ctx->ftdic, SIO_RTS_CTS_HS)) < 0) { |
30939770 | 585 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
ea9cfed7 UH |
586 | __func__, ret, ftdi_get_error_string(ctx->ftdic)); |
587 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ | |
e7eb703f | 588 | goto err_dev_open_close_ftdic; |
f4314d7e | 589 | } |
04254c3f | 590 | sr_dbg("la8: FTDI flow control enabled successfully."); |
f4314d7e UH |
591 | |
592 | /* Wait 100ms. */ | |
593 | g_usleep(100 * 1000); | |
594 | ||
595 | sdi->status = SR_ST_ACTIVE; | |
596 | ||
597 | return SR_OK; | |
598 | ||
e7eb703f | 599 | err_dev_open_close_ftdic: |
ea9cfed7 | 600 | (void) la8_close(ctx); /* Log, but ignore errors. */ |
f4314d7e UH |
601 | return SR_ERR; |
602 | } | |
603 | ||
d68e2d1a | 604 | static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate) |
f4314d7e | 605 | { |
ea9cfed7 | 606 | struct context *ctx; |
f4314d7e | 607 | |
47671b0f | 608 | /* Note: Caller checked that sdi and sdi->priv != NULL. */ |
f4314d7e | 609 | |
47671b0f | 610 | ctx = sdi->priv; |
f4314d7e | 611 | |
04254c3f | 612 | sr_spew("la8: Trying to set samplerate to %" PRIu64 "Hz.", samplerate); |
f4314d7e UH |
613 | |
614 | fill_supported_samplerates_if_needed(); | |
615 | ||
616 | /* Check if this is a samplerate supported by the hardware. */ | |
617 | if (!is_valid_samplerate(samplerate)) | |
618 | return SR_ERR; | |
619 | ||
620 | /* Set the new samplerate. */ | |
ea9cfed7 | 621 | ctx->cur_samplerate = samplerate; |
f4314d7e | 622 | |
04254c3f | 623 | sr_dbg("la8: Samplerate set to %" PRIu64 "Hz.", ctx->cur_samplerate); |
f4314d7e UH |
624 | |
625 | return SR_OK; | |
626 | } | |
627 | ||
e7eb703f | 628 | static int hw_dev_close(int dev_index) |
f4314d7e | 629 | { |
d68e2d1a | 630 | struct sr_dev_inst *sdi; |
ea9cfed7 | 631 | struct context *ctx; |
f4314d7e | 632 | |
bb7ef793 | 633 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 634 | sr_err("la8: %s: sdi was NULL", __func__); |
697785d1 | 635 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
636 | } |
637 | ||
ea9cfed7 | 638 | if (!(ctx = sdi->priv)) { |
30939770 | 639 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
697785d1 | 640 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
641 | } |
642 | ||
04254c3f | 643 | sr_dbg("la8: Closing device."); |
f4314d7e UH |
644 | |
645 | if (sdi->status == SR_ST_ACTIVE) { | |
04254c3f | 646 | sr_dbg("la8: Status ACTIVE, closing device."); |
697785d1 | 647 | /* TODO: Really ignore errors here, or return SR_ERR? */ |
ea9cfed7 | 648 | (void) la8_close_usb_reset_sequencer(ctx); /* Ignore errors. */ |
f4314d7e | 649 | } else { |
04254c3f | 650 | sr_spew("la8: Status not ACTIVE, nothing to do."); |
f4314d7e UH |
651 | } |
652 | ||
653 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 | 654 | |
04254c3f | 655 | sr_dbg("la8: Freeing sample buffer."); |
ea9cfed7 | 656 | g_free(ctx->final_buf); |
697785d1 UH |
657 | |
658 | return SR_OK; | |
f4314d7e UH |
659 | } |
660 | ||
57ab7d9f | 661 | static int hw_cleanup(void) |
f4314d7e UH |
662 | { |
663 | GSList *l; | |
d68e2d1a | 664 | struct sr_dev_inst *sdi; |
57ab7d9f | 665 | int ret = SR_OK; |
f4314d7e | 666 | |
f4314d7e | 667 | /* Properly close all devices. */ |
d68e2d1a | 668 | for (l = dev_insts; l; l = l->next) { |
57ab7d9f UH |
669 | if (!(sdi = l->data)) { |
670 | /* Log error, but continue cleaning up the rest. */ | |
133a37bf | 671 | sr_err("la8: %s: sdi was NULL, continuing", __func__); |
57ab7d9f | 672 | ret = SR_ERR_BUG; |
f4314d7e UH |
673 | continue; |
674 | } | |
d3683c42 | 675 | sr_dev_inst_free(sdi); /* Returns void. */ |
f4314d7e | 676 | } |
d68e2d1a UH |
677 | g_slist_free(dev_insts); /* Returns void. */ |
678 | dev_insts = NULL; | |
57ab7d9f UH |
679 | |
680 | return ret; | |
f4314d7e UH |
681 | } |
682 | ||
5097b0d0 | 683 | static void *hw_dev_info_get(int dev_index, int dev_info_id) |
f4314d7e | 684 | { |
d68e2d1a | 685 | struct sr_dev_inst *sdi; |
ea9cfed7 | 686 | struct context *ctx; |
f4314d7e UH |
687 | void *info; |
688 | ||
bb7ef793 | 689 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 690 | sr_err("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
691 | return NULL; |
692 | } | |
693 | ||
ea9cfed7 | 694 | if (!(ctx = sdi->priv)) { |
30939770 | 695 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
696 | return NULL; |
697 | } | |
698 | ||
04254c3f UH |
699 | sr_spew("la8: %s: dev_index %d, dev_info_id %d.", __func__, |
700 | dev_index, dev_info_id); | |
701 | ||
bb7ef793 | 702 | switch (dev_info_id) { |
1d9a8a5f | 703 | case SR_DI_INST: |
f4314d7e | 704 | info = sdi; |
04254c3f | 705 | sr_spew("la8: %s: Returning sdi.", __func__); |
f4314d7e UH |
706 | break; |
707 | case SR_DI_NUM_PROBES: | |
708 | info = GINT_TO_POINTER(NUM_PROBES); | |
04254c3f UH |
709 | sr_spew("la8: %s: Returning number of probes: %d.", __func__, |
710 | NUM_PROBES); | |
f4314d7e | 711 | break; |
464d12c7 KS |
712 | case SR_DI_PROBE_NAMES: |
713 | info = probe_names; | |
04254c3f | 714 | sr_spew("la8: %s: Returning probenames.", __func__); |
464d12c7 | 715 | break; |
f4314d7e UH |
716 | case SR_DI_SAMPLERATES: |
717 | fill_supported_samplerates_if_needed(); | |
718 | info = &samplerates; | |
04254c3f | 719 | sr_spew("la8: %s: Returning samplerates.", __func__); |
f4314d7e UH |
720 | break; |
721 | case SR_DI_TRIGGER_TYPES: | |
722 | info = (char *)TRIGGER_TYPES; | |
04254c3f UH |
723 | sr_spew("la8: %s: Returning trigger types: %s.", __func__, |
724 | TRIGGER_TYPES); | |
f4314d7e UH |
725 | break; |
726 | case SR_DI_CUR_SAMPLERATE: | |
ea9cfed7 | 727 | info = &ctx->cur_samplerate; |
04254c3f UH |
728 | sr_spew("la8: %s: Returning samplerate: %" PRIu64 "Hz.", |
729 | __func__, ctx->cur_samplerate); | |
f4314d7e UH |
730 | break; |
731 | default: | |
732 | /* Unknown device info ID, return NULL. */ | |
30939770 | 733 | sr_err("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
734 | info = NULL; |
735 | break; | |
736 | } | |
737 | ||
738 | return info; | |
739 | } | |
740 | ||
e7eb703f | 741 | static int hw_dev_status_get(int dev_index) |
f4314d7e | 742 | { |
d68e2d1a | 743 | struct sr_dev_inst *sdi; |
f4314d7e | 744 | |
bb7ef793 | 745 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
133a37bf | 746 | sr_err("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
747 | return SR_ST_NOT_FOUND; |
748 | } | |
749 | ||
04254c3f | 750 | sr_dbg("la8: Returning status: %d.", sdi->status); |
f4314d7e UH |
751 | |
752 | return sdi->status; | |
753 | } | |
754 | ||
ffedd0bf | 755 | static int *hw_hwcap_get_all(void) |
f4314d7e | 756 | { |
04254c3f | 757 | sr_spew("la8: Returning list of device capabilities."); |
f4314d7e | 758 | |
ffedd0bf | 759 | return hwcaps; |
f4314d7e UH |
760 | } |
761 | ||
a9a245b4 | 762 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) |
f4314d7e | 763 | { |
d68e2d1a | 764 | struct sr_dev_inst *sdi; |
ea9cfed7 | 765 | struct context *ctx; |
f4314d7e | 766 | |
bb7ef793 | 767 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 768 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 769 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
770 | } |
771 | ||
ea9cfed7 | 772 | if (!(ctx = sdi->priv)) { |
30939770 | 773 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 774 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
775 | } |
776 | ||
04254c3f UH |
777 | sr_spew("la8: %s: dev_index %d, hwcap %d", __func__, dev_index, hwcap); |
778 | ||
ffedd0bf | 779 | switch (hwcap) { |
f4314d7e | 780 | case SR_HWCAP_SAMPLERATE: |
04254c3f UH |
781 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) { |
782 | sr_err("la8: %s: setting samplerate failed.", __func__); | |
f4314d7e | 783 | return SR_ERR; |
04254c3f | 784 | } |
ea9cfed7 | 785 | sr_dbg("la8: SAMPLERATE = %" PRIu64, ctx->cur_samplerate); |
f4314d7e UH |
786 | break; |
787 | case SR_HWCAP_PROBECONFIG: | |
ea9cfed7 | 788 | if (configure_probes(ctx, (GSList *)value) != SR_OK) { |
04254c3f | 789 | sr_err("la8: %s: probe config failed.", __func__); |
ecaf59db UH |
790 | return SR_ERR; |
791 | } | |
f4314d7e UH |
792 | break; |
793 | case SR_HWCAP_LIMIT_MSEC: | |
794 | if (*(uint64_t *)value == 0) { | |
04254c3f | 795 | sr_err("la8: %s: LIMIT_MSEC can't be 0.", __func__); |
f4314d7e UH |
796 | return SR_ERR; |
797 | } | |
ea9cfed7 UH |
798 | ctx->limit_msec = *(uint64_t *)value; |
799 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, ctx->limit_msec); | |
f4314d7e UH |
800 | break; |
801 | case SR_HWCAP_LIMIT_SAMPLES: | |
802 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
04254c3f | 803 | sr_err("la8: %s: LIMIT_SAMPLES too small.", __func__); |
f4314d7e UH |
804 | return SR_ERR; |
805 | } | |
ea9cfed7 UH |
806 | ctx->limit_samples = *(uint64_t *)value; |
807 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, ctx->limit_samples); | |
f4314d7e UH |
808 | break; |
809 | default: | |
810 | /* Unknown capability, return SR_ERR. */ | |
04254c3f | 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 | 821 | * |
04254c3f UH |
822 | * @param ctx The struct containing private per-device-instance data. Must not |
823 | * be NULL. ctx->ftdic must not be NULL either. | |
f4314d7e UH |
824 | * @return SR_OK upon success, or SR_ERR upon errors. |
825 | */ | |
ea9cfed7 | 826 | static int la8_read_block(struct context *ctx) |
f4314d7e UH |
827 | { |
828 | int i, byte_offset, m, mi, p, index, bytes_read; | |
829 | time_t now; | |
830 | ||
47671b0f | 831 | /* Note: Caller checked that ctx and ctx->ftdic != NULL. */ |
f4314d7e | 832 | |
04254c3f | 833 | sr_spew("la8: Reading block %d.", ctx->block_counter); |
f4314d7e | 834 | |
ea9cfed7 | 835 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); |
f4314d7e UH |
836 | |
837 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
ea9cfed7 | 838 | if ((bytes_read == 0) && (ctx->block_counter == 0)) { |
f4314d7e | 839 | do { |
04254c3f | 840 | sr_spew("la8: Reading block 0 (again)."); |
ea9cfed7 | 841 | bytes_read = la8_read(ctx, ctx->mangled_buf, BS); |
f4314d7e UH |
842 | /* TODO: How to handle read errors here? */ |
843 | now = time(NULL); | |
ea9cfed7 | 844 | } while ((ctx->done > now) && (bytes_read == 0)); |
f4314d7e UH |
845 | } |
846 | ||
847 | /* Check if block read was successful or a timeout occured. */ | |
a76983fd | 848 | if (bytes_read != BS) { |
04254c3f | 849 | sr_err("la8: Trigger timed out. Bytes read: %d.", bytes_read); |
ea9cfed7 | 850 | (void) la8_reset(ctx); /* Ignore errors. */ |
f4314d7e UH |
851 | return SR_ERR; |
852 | } | |
853 | ||
854 | /* De-mangle the data. */ | |
04254c3f | 855 | sr_spew("la8: Demangling block %d.", ctx->block_counter); |
ea9cfed7 | 856 | byte_offset = ctx->block_counter * BS; |
f4314d7e UH |
857 | m = byte_offset / (1024 * 1024); |
858 | mi = m * (1024 * 1024); | |
a76983fd | 859 | for (i = 0; i < BS; i++) { |
f4314d7e UH |
860 | p = i & (1 << 0); |
861 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
ea9cfed7 UH |
862 | index += (ctx->divcount == 0) ? p : (1 - p); |
863 | ctx->final_buf[index] = ctx->mangled_buf[i]; | |
f4314d7e UH |
864 | } |
865 | ||
866 | return SR_OK; | |
867 | } | |
868 | ||
ea9cfed7 | 869 | static void send_block_to_session_bus(struct context *ctx, int block) |
4d7b525a UH |
870 | { |
871 | int i; | |
872 | uint8_t sample, expected_sample; | |
873 | struct sr_datafeed_packet packet; | |
9c939c51 | 874 | struct sr_datafeed_logic logic; |
4d7b525a UH |
875 | int trigger_point; /* Relative trigger point (in this block). */ |
876 | ||
ea9cfed7 | 877 | /* Note: No sanity checks on ctx/block, caller is responsible. */ |
4d7b525a UH |
878 | |
879 | /* Check if we can find the trigger condition in this block. */ | |
880 | trigger_point = -1; | |
ea9cfed7 | 881 | expected_sample = ctx->trigger_pattern & ctx->trigger_mask; |
a76983fd | 882 | for (i = 0; i < BS; i++) { |
4d7b525a | 883 | /* Don't continue if the trigger was found previously. */ |
ea9cfed7 | 884 | if (ctx->trigger_found) |
4d7b525a UH |
885 | break; |
886 | ||
f36cbf60 UH |
887 | /* |
888 | * Also, don't continue if triggers are "don't care", i.e. if | |
889 | * no trigger conditions were specified by the user. In that | |
890 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
891 | */ | |
ea9cfed7 | 892 | if (ctx->trigger_mask == 0x00) |
f36cbf60 UH |
893 | break; |
894 | ||
ea9cfed7 | 895 | sample = *(ctx->final_buf + (block * BS) + i); |
4d7b525a | 896 | |
ea9cfed7 | 897 | if ((sample & ctx->trigger_mask) == expected_sample) { |
4d7b525a | 898 | trigger_point = i; |
ea9cfed7 | 899 | ctx->trigger_found = 1; |
4d7b525a UH |
900 | break; |
901 | } | |
902 | } | |
903 | ||
904 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
905 | if (trigger_point == -1) { | |
a76983fd | 906 | /* Send an SR_DF_LOGIC packet to the session bus. */ |
d1175d5f UH |
907 | sr_spew("la8: sending SR_DF_LOGIC packet (%d bytes) for " |
908 | "block %d", BS, block); | |
4d7b525a | 909 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
910 | packet.payload = &logic; |
911 | logic.length = BS; | |
912 | logic.unitsize = 1; | |
ea9cfed7 UH |
913 | logic.data = ctx->final_buf + (block * BS); |
914 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
915 | return; |
916 | } | |
917 | ||
918 | /* | |
919 | * We found the trigger, so some special handling is needed. We have | |
920 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
921 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
922 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
923 | */ | |
924 | ||
925 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
926 | ||
927 | /* If at least one sample is located before the trigger... */ | |
928 | if (trigger_point > 0) { | |
929 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
d1175d5f | 930 | sr_spew("la8: sending pre-trigger SR_DF_LOGIC packet, " |
f36cbf60 | 931 | "start = %d, length = %d", block * BS, trigger_point); |
4d7b525a | 932 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
933 | packet.payload = &logic; |
934 | logic.length = trigger_point; | |
935 | logic.unitsize = 1; | |
ea9cfed7 UH |
936 | logic.data = ctx->final_buf + (block * BS); |
937 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
938 | } |
939 | ||
940 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
d1175d5f | 941 | sr_spew("la8: sending SR_DF_TRIGGER packet, sample = %d", |
f36cbf60 | 942 | (block * BS) + trigger_point); |
4d7b525a | 943 | packet.type = SR_DF_TRIGGER; |
4d7b525a | 944 | packet.payload = NULL; |
ea9cfed7 | 945 | sr_session_bus(ctx->session_id, &packet); |
4d7b525a UH |
946 | |
947 | /* If at least one sample is located after the trigger... */ | |
a76983fd | 948 | if (trigger_point < (BS - 1)) { |
4d7b525a | 949 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ |
d1175d5f | 950 | sr_spew("la8: sending post-trigger SR_DF_LOGIC packet, " |
896a19fd | 951 | "start = %d, length = %d", |
f36cbf60 | 952 | (block * BS) + trigger_point, BS - trigger_point); |
4d7b525a | 953 | packet.type = SR_DF_LOGIC; |
9c939c51 BV |
954 | packet.payload = &logic; |
955 | logic.length = BS - trigger_point; | |
956 | logic.unitsize = 1; | |
ea9cfed7 UH |
957 | logic.data = ctx->final_buf + (block * BS) + trigger_point; |
958 | sr_session_bus(ctx->session_id, &packet); | |
4d7b525a UH |
959 | } |
960 | } | |
961 | ||
9c939c51 | 962 | static int receive_data(int fd, int revents, void *session_data) |
f4314d7e UH |
963 | { |
964 | int i, ret; | |
d68e2d1a | 965 | struct sr_dev_inst *sdi; |
ea9cfed7 | 966 | struct context *ctx; |
f4314d7e UH |
967 | |
968 | /* Avoid compiler errors. */ | |
cb93f8a9 UH |
969 | (void)fd; |
970 | (void)revents; | |
f4314d7e | 971 | |
9c939c51 | 972 | if (!(sdi = session_data)) { |
ae32d7d7 | 973 | sr_err("la8: %s: session_data was NULL", __func__); |
f4314d7e UH |
974 | return FALSE; |
975 | } | |
976 | ||
ea9cfed7 | 977 | if (!(ctx = sdi->priv)) { |
30939770 | 978 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
979 | return FALSE; |
980 | } | |
981 | ||
47671b0f UH |
982 | if (!ctx->ftdic) { |
983 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
984 | return FALSE; | |
985 | } | |
986 | ||
a76983fd | 987 | /* Get one block of data. */ |
ea9cfed7 | 988 | if ((ret = la8_read_block(ctx)) < 0) { |
30939770 | 989 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
69040b7c | 990 | hw_dev_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
991 | return FALSE; |
992 | } | |
993 | ||
a76983fd | 994 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ |
ea9cfed7 UH |
995 | if (ctx->block_counter != (NUM_BLOCKS - 1)) { |
996 | ctx->block_counter++; | |
f4314d7e UH |
997 | return TRUE; |
998 | } | |
999 | ||
04254c3f | 1000 | sr_dbg("la8: Sampling finished, sending data to session bus now."); |
f4314d7e UH |
1001 | |
1002 | /* All data was received and demangled, send it to the session bus. */ | |
a76983fd | 1003 | for (i = 0; i < NUM_BLOCKS; i++) |
ea9cfed7 | 1004 | send_block_to_session_bus(ctx, i); |
f4314d7e | 1005 | |
69040b7c | 1006 | hw_dev_acquisition_stop(sdi->index, session_data); |
f4314d7e UH |
1007 | |
1008 | // return FALSE; /* FIXME? */ | |
1009 | return TRUE; | |
1010 | } | |
1011 | ||
69040b7c | 1012 | static int hw_dev_acquisition_start(int dev_index, gpointer session_data) |
f4314d7e | 1013 | { |
d68e2d1a | 1014 | struct sr_dev_inst *sdi; |
ea9cfed7 | 1015 | struct context *ctx; |
f4314d7e UH |
1016 | struct sr_datafeed_packet packet; |
1017 | struct sr_datafeed_header header; | |
1018 | uint8_t buf[4]; | |
1019 | int bytes_written; | |
1020 | ||
bb7ef793 | 1021 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1022 | sr_err("la8: %s: sdi was NULL", __func__); |
8703f512 | 1023 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1024 | } |
1025 | ||
ea9cfed7 | 1026 | if (!(ctx = sdi->priv)) { |
30939770 | 1027 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 1028 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
1029 | } |
1030 | ||
ea9cfed7 UH |
1031 | if (!ctx->ftdic) { |
1032 | sr_err("la8: %s: ctx->ftdic was NULL", __func__); | |
8703f512 | 1033 | return SR_ERR_ARG; |
f4314d7e UH |
1034 | } |
1035 | ||
ea9cfed7 UH |
1036 | ctx->divcount = samplerate_to_divcount(ctx->cur_samplerate); |
1037 | if (ctx->divcount == 0xff) { | |
30939770 | 1038 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
1039 | return SR_ERR; |
1040 | } | |
1041 | ||
04254c3f UH |
1042 | sr_dbg("la8: Starting acquisition."); |
1043 | ||
f4314d7e | 1044 | /* Fill acquisition parameters into buf[]. */ |
ea9cfed7 | 1045 | buf[0] = ctx->divcount; |
f4314d7e | 1046 | buf[1] = 0xff; /* This byte must always be 0xff. */ |
ea9cfed7 UH |
1047 | buf[2] = ctx->trigger_pattern; |
1048 | buf[3] = ctx->trigger_mask; | |
f4314d7e UH |
1049 | |
1050 | /* Start acquisition. */ | |
ea9cfed7 | 1051 | bytes_written = la8_write(ctx, buf, 4); |
f4314d7e UH |
1052 | |
1053 | if (bytes_written < 0) { | |
04254c3f | 1054 | sr_err("la8: Acquisition failed to start."); |
f4314d7e UH |
1055 | return SR_ERR; |
1056 | } else if (bytes_written != 4) { | |
04254c3f | 1057 | sr_err("la8: Acquisition failed to start."); |
f4314d7e UH |
1058 | return SR_ERR; /* TODO: Other error and return code? */ |
1059 | } | |
1060 | ||
04254c3f | 1061 | sr_dbg("la8: Acquisition started successfully."); |
f4314d7e | 1062 | |
ea9cfed7 | 1063 | ctx->session_id = session_data; |
f4314d7e UH |
1064 | |
1065 | /* Send header packet to the session bus. */ | |
04254c3f | 1066 | sr_dbg("la8: Sending SR_DF_HEADER."); |
f4314d7e | 1067 | packet.type = SR_DF_HEADER; |
f4314d7e UH |
1068 | packet.payload = &header; |
1069 | header.feed_version = 1; | |
1070 | gettimeofday(&header.starttime, NULL); | |
ea9cfed7 | 1071 | header.samplerate = ctx->cur_samplerate; |
4bc5fd45 | 1072 | header.num_logic_probes = NUM_PROBES; |
9c939c51 | 1073 | sr_session_bus(session_data, &packet); |
f4314d7e UH |
1074 | |
1075 | /* Time when we should be done (for detecting trigger timeouts). */ | |
ea9cfed7 UH |
1076 | ctx->done = (ctx->divcount + 1) * 0.08388608 + time(NULL) |
1077 | + ctx->trigger_timeout; | |
1078 | ctx->block_counter = 0; | |
1079 | ctx->trigger_found = 0; | |
f4314d7e UH |
1080 | |
1081 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1082 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1083 | ||
1084 | return SR_OK; | |
1085 | } | |
1086 | ||
69040b7c | 1087 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data) |
f4314d7e | 1088 | { |
d68e2d1a | 1089 | struct sr_dev_inst *sdi; |
ea9cfed7 | 1090 | struct context *ctx; |
f4314d7e UH |
1091 | struct sr_datafeed_packet packet; |
1092 | ||
04254c3f | 1093 | sr_dbg("la8: Stopping acquisition."); |
f4314d7e | 1094 | |
bb7ef793 | 1095 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { |
30939770 | 1096 | sr_err("la8: %s: sdi was NULL", __func__); |
3010f21c | 1097 | return SR_ERR_BUG; |
f4314d7e UH |
1098 | } |
1099 | ||
ea9cfed7 | 1100 | if (!(ctx = sdi->priv)) { |
30939770 | 1101 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
3010f21c | 1102 | return SR_ERR_BUG; |
f4314d7e UH |
1103 | } |
1104 | ||
f4314d7e | 1105 | /* Send end packet to the session bus. */ |
04254c3f | 1106 | sr_dbg("la8: Sending SR_DF_END."); |
f4314d7e | 1107 | packet.type = SR_DF_END; |
9c939c51 | 1108 | sr_session_bus(session_data, &packet); |
3010f21c UH |
1109 | |
1110 | return SR_OK; | |
f4314d7e UH |
1111 | } |
1112 | ||
bb7ef793 | 1113 | SR_PRIV struct sr_dev_plugin chronovu_la8_plugin_info = { |
f4314d7e UH |
1114 | .name = "chronovu-la8", |
1115 | .longname = "ChronoVu LA8", | |
1116 | .api_version = 1, | |
1117 | .init = hw_init, | |
1118 | .cleanup = hw_cleanup, | |
e7eb703f UH |
1119 | .dev_open = hw_dev_open, |
1120 | .dev_close = hw_dev_close, | |
5097b0d0 | 1121 | .dev_info_get = hw_dev_info_get, |
e7eb703f | 1122 | .dev_status_get = hw_dev_status_get, |
ffedd0bf | 1123 | .hwcap_get_all = hw_hwcap_get_all, |
a9a245b4 | 1124 | .dev_config_set = hw_dev_config_set, |
69040b7c UH |
1125 | .dev_acquisition_start = hw_dev_acquisition_start, |
1126 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
f4314d7e | 1127 | }; |