2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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 3 of the License, or
9 * (at your option) any later version.
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.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 static const uint32_t drvopts[] = {
24 SR_CONF_LOGIC_ANALYZER,
27 static const uint32_t devopts[] = {
28 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
29 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
30 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
31 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
32 SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
33 SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
34 SR_CONF_SWAP | SR_CONF_SET,
35 SR_CONF_RLE | SR_CONF_GET | SR_CONF_SET,
38 static const int32_t trigger_matches[] = {
45 #define STR_PATTERN_NONE "None"
46 #define STR_PATTERN_EXTERNAL "External"
47 #define STR_PATTERN_INTERNAL "Internal"
49 /* Supported methods of test pattern outputs */
52 * Capture pins 31:16 (unbuffered wing) output a test pattern
53 * that can captured on pins 0:15.
57 /** Route test pattern internally to capture buffer. */
61 static const char *patterns[] = {
67 /* Channels are numbered 0-31 (on the PCB silkscreen). */
68 SR_PRIV const char *p_ols_channel_names[] = {
69 "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
70 "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
71 "24", "25", "26", "27", "28", "29", "30", "31",
74 /* Default supported samplerates, can be overridden by device metadata. */
75 static const uint64_t samplerates[] = {
81 static GSList *scan(struct sr_dev_driver *di, GSList *options)
83 struct sr_dev_inst *sdi;
84 struct dev_context *devc;
94 devc = g_malloc0(sizeof(struct dev_context));
96 devc->max_samplebytes = devc->max_samplerate = devc->protocol_version = 0;
98 devc->limit_samples = devc->capture_ratio = 0;
99 devc->trigger_at = -1;
100 devc->channel_mask = 0xffffffff;
103 devc->ftdi_buf = g_malloc0(FTDI_BUF_SIZE);
105 if (!(devc->ftdic = ftdi_new())) {
106 sr_err("Failed to initialize libftdi.");
107 goto err_free_ftdi_buf;;
110 if (p_ols_open(devc) != SR_OK)
113 /* The discovery procedure is like this: first send the Reset
114 * command (0x00) 5 times, since the device could be anywhere
115 * in a 5-byte command. Then send the ID command (0x02).
116 * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
121 for (i = 0; i < 5; i++) {
122 if ((ret = write_shortcommand(devc, CMD_RESET)) != SR_OK) {
127 sr_err("Could not reset device. Quitting.");
128 goto err_close_ftdic;
130 write_shortcommand(devc, CMD_ID);
132 /* Read the response data. */
133 bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 4);
134 if (bytes_read < 0) {
135 sr_err("Failed to read FTDI data (%d): %s.",
136 bytes_read, ftdi_get_error_string(devc->ftdic));
137 goto err_close_ftdic;
139 if (bytes_read == 0) {
140 goto err_close_ftdic;
143 if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
144 goto err_close_ftdic;
146 /* Definitely using the OLS protocol, check if it supports
147 * the metadata command.
149 write_shortcommand(devc, CMD_METADATA);
151 /* Read the metadata. */
152 bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 64);
153 if (bytes_read < 0) {
154 sr_err("Failed to read FTDI data (%d): %s.",
155 bytes_read, ftdi_get_error_string(devc->ftdic));
156 goto err_close_ftdic;
158 if (bytes_read == 0) {
159 goto err_close_ftdic;
164 /* Parse the metadata. */
165 sdi = p_ols_get_metadata((uint8_t *)buf, bytes_read, devc);
167 /* Configure samplerate and divider. */
168 if (p_ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
169 sr_dbg("Failed to set default samplerate (%"PRIu64").",
172 devices = g_slist_append(devices, sdi);
174 return std_scan_complete(di, devices);
179 ftdi_free(devc->ftdic);
181 g_free(devc->ftdi_buf);
187 static void clear_helper(struct dev_context *devc)
189 ftdi_free(devc->ftdic);
190 g_free(devc->ftdi_buf);
193 static int dev_clear(const struct sr_dev_driver *di)
195 return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
198 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
199 const struct sr_channel_group *cg)
201 struct dev_context *devc;
210 case SR_CONF_SAMPLERATE:
211 *data = g_variant_new_uint64(devc->cur_samplerate);
213 case SR_CONF_CAPTURE_RATIO:
214 *data = g_variant_new_uint64(devc->capture_ratio);
216 case SR_CONF_LIMIT_SAMPLES:
217 *data = g_variant_new_uint64(devc->limit_samples);
219 case SR_CONF_PATTERN_MODE:
220 if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
221 *data = g_variant_new_string(STR_PATTERN_EXTERNAL);
222 else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
223 *data = g_variant_new_string(STR_PATTERN_INTERNAL);
225 *data = g_variant_new_string(STR_PATTERN_NONE);
228 *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
230 case SR_CONF_EXTERNAL_CLOCK:
231 *data = g_variant_new_boolean(devc->flag_reg & FLAG_CLOCK_EXTERNAL ? TRUE : FALSE);
240 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
241 const struct sr_channel_group *cg)
243 struct dev_context *devc;
254 case SR_CONF_SAMPLERATE:
255 tmp_u64 = g_variant_get_uint64(data);
256 if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
257 return SR_ERR_SAMPLERATE;
258 ret = p_ols_set_samplerate(sdi, g_variant_get_uint64(data));
260 case SR_CONF_LIMIT_SAMPLES:
261 tmp_u64 = g_variant_get_uint64(data);
262 if (tmp_u64 < MIN_NUM_SAMPLES)
264 devc->limit_samples = tmp_u64;
267 case SR_CONF_CAPTURE_RATIO:
268 devc->capture_ratio = g_variant_get_uint64(data);
269 if (devc->capture_ratio < 0 || devc->capture_ratio > 100)
274 case SR_CONF_EXTERNAL_CLOCK:
275 if (g_variant_get_boolean(data)) {
276 sr_info("Enabling external clock.");
277 devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
279 sr_info("Disabled external clock.");
280 devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
284 case SR_CONF_PATTERN_MODE:
285 stropt = g_variant_get_string(data, NULL);
288 if (!strcmp(stropt, STR_PATTERN_NONE)) {
289 sr_info("Disabling test modes.");
291 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
292 sr_info("Enabling internal test mode.");
293 flag = FLAG_INTERNAL_TEST_MODE;
294 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
295 sr_info("Enabling external test mode.");
296 flag = FLAG_EXTERNAL_TEST_MODE;
300 if (flag != 0xffff) {
301 devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
302 devc->flag_reg |= flag;
306 if (g_variant_get_boolean(data)) {
307 sr_info("Enabling channel swapping.");
308 devc->flag_reg |= FLAG_SWAP_CHANNELS;
310 sr_info("Disabling channel swapping.");
311 devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
317 if (g_variant_get_boolean(data)) {
318 sr_info("Enabling RLE.");
319 devc->flag_reg |= FLAG_RLE;
321 sr_info("Disabling RLE.");
322 devc->flag_reg &= ~FLAG_RLE;
333 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
334 const struct sr_channel_group *cg)
336 struct dev_context *devc;
337 GVariant *gvar, *grange[2];
339 int num_pols_changrp, i;
342 case SR_CONF_DEVICE_OPTIONS:
343 return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
344 case SR_CONF_SAMPLERATE:
345 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
346 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
347 ARRAY_SIZE(samplerates), sizeof(uint64_t));
348 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
349 *data = g_variant_builder_end(&gvb);
351 case SR_CONF_TRIGGER_MATCH:
352 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
353 trigger_matches, ARRAY_SIZE(trigger_matches),
356 case SR_CONF_PATTERN_MODE:
357 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
359 case SR_CONF_LIMIT_SAMPLES:
363 if (devc->flag_reg & FLAG_RLE)
365 if (devc->max_samplebytes == 0)
366 /* Device didn't specify sample memory size in metadata. */
369 * Channel groups are turned off if no channels in that group are
370 * enabled, making more room for samples for the enabled group.
372 pols_channel_mask(sdi);
373 num_pols_changrp = 0;
374 for (i = 0; i < 4; i++) {
375 if (devc->channel_mask & (0xff << (i * 8)))
378 /* 3 channel groups takes as many bytes as 4 channel groups */
379 if (num_pols_changrp == 3)
380 num_pols_changrp = 4;
381 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
382 if (num_pols_changrp)
383 grange[1] = g_variant_new_uint64(devc->max_samplebytes / num_pols_changrp);
385 grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
386 *data = g_variant_new_tuple(grange, 2);
395 static int dev_open(struct sr_dev_inst *sdi)
397 struct dev_context *devc;
401 return p_ols_open(devc);
404 static int dev_close(struct sr_dev_inst *sdi)
406 struct dev_context *devc;
410 return p_ols_close(devc);
413 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
415 struct dev_context *devc;
420 cmd = CMD_SET_TRIGGER_MASK + stage * 4;
421 arg[0] = devc->trigger_mask[stage] & 0xff;
422 arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
423 arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
424 arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
425 if (write_longcommand(devc, cmd, arg) != SR_OK)
428 cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
429 arg[0] = devc->trigger_value[stage] & 0xff;
430 arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
431 arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
432 arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
433 if (write_longcommand(devc, cmd, arg) != SR_OK)
436 cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
437 arg[0] = arg[1] = arg[3] = 0x00;
439 if (stage == devc->num_stages)
440 /* Last stage, fire when this one matches. */
441 arg[3] |= TRIGGER_START;
442 if (write_longcommand(devc, cmd, arg) != SR_OK)
445 cmd = CMD_SET_TRIGGER_EDGE + stage * 4;
446 arg[0] = devc->trigger_edge[stage] & 0xff;
447 arg[1] = (devc->trigger_edge[stage] >> 8) & 0xff;
448 arg[2] = (devc->trigger_edge[stage] >> 16) & 0xff;
449 arg[3] = (devc->trigger_edge[stage] >> 24) & 0xff;
450 if (write_longcommand(devc, cmd, arg) != SR_OK)
456 static int disable_trigger(const struct sr_dev_inst *sdi, int stage)
458 struct dev_context *devc;
463 cmd = CMD_SET_TRIGGER_MASK + stage * 4;
464 arg[0] = arg[1] = arg[2] = arg[3] = 0x00;
465 if (write_longcommand(devc, cmd, arg) != SR_OK)
468 cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
469 if (write_longcommand(devc, cmd, arg) != SR_OK)
472 cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
474 if (write_longcommand(devc, cmd, arg) != SR_OK)
477 cmd = CMD_SET_TRIGGER_EDGE + stage * 4;
479 if (write_longcommand(devc, cmd, arg) != SR_OK)
485 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
487 struct dev_context *devc;
488 uint32_t samplecount, readcount, delaycount;
489 uint8_t pols_changrp_mask, arg[4];
491 int num_pols_changrp, samplespercount;
496 pols_channel_mask(sdi);
499 * Enable/disable channel groups in the flag register according to the
500 * channel mask. Calculate this here, because num_pols_changrp is
501 * needed to limit readcount.
503 pols_changrp_mask = 0;
504 num_pols_changrp = 0;
505 for (i = 0; i < 4; i++) {
506 if (devc->channel_mask & (0xff << (i * 8))) {
507 pols_changrp_mask |= (1 << i);
511 /* 3 channel groups takes as many bytes as 4 channel groups */
512 if (num_pols_changrp == 3)
513 num_pols_changrp = 4;
514 /* maximum number of samples (or RLE counts) the buffer memory can hold */
515 devc->max_samples = devc->max_samplebytes / num_pols_changrp;
518 * Limit readcount to prevent reading past the end of the hardware
521 sr_dbg("max_samples = %d", devc->max_samples);
522 sr_dbg("limit_samples = %" PRIu64, devc->limit_samples);
523 samplecount = MIN(devc->max_samples, devc->limit_samples);
524 sr_dbg("Samplecount = %d", samplecount);
526 /* In demux mode the OLS is processing two samples per clock */
527 if (devc->flag_reg & FLAG_DEMUX) {
534 readcount = samplecount / samplespercount;
536 /* Rather read too many samples than too few. */
537 if (samplecount % samplespercount != 0)
540 /* Basic triggers. */
541 if (pols_convert_trigger(sdi) != SR_OK) {
542 sr_err("Failed to configure channels.");
546 if (devc->num_stages > 0) {
547 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
548 devc->trigger_at = (readcount - delaycount) * samplespercount - devc->num_stages;
549 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
550 if (i <= devc->num_stages) {
551 sr_dbg("Setting p-ols stage %d trigger.", i);
552 if ((ret = set_trigger(sdi, i)) != SR_OK)
556 sr_dbg("Disabling p-ols stage %d trigger.", i);
557 if ((ret = disable_trigger(sdi, i)) != SR_OK)
562 /* No triggers configured, force trigger on first stage. */
563 sr_dbg("Forcing trigger at stage 0.");
564 if ((ret = set_trigger(sdi, 0)) != SR_OK)
566 delaycount = readcount;
570 sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
571 devc->cur_samplerate, devc->cur_samplerate_divider);
572 arg[0] = devc->cur_samplerate_divider & 0xff;
573 arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
574 arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
576 if (write_longcommand(devc, CMD_SET_DIVIDER, arg) != SR_OK)
579 /* Send extended sample limit and pre/post-trigger capture ratio. */
580 arg[0] = ((readcount - 1) & 0xff);
581 arg[1] = ((readcount - 1) & 0xff00) >> 8;
582 arg[2] = ((readcount - 1) & 0xff0000) >> 16;
583 arg[3] = ((readcount - 1) & 0xff000000) >> 24;
584 if (write_longcommand(devc, CMD_CAPTURE_DELAY, arg) != SR_OK)
586 arg[0] = ((delaycount - 1) & 0xff);
587 arg[1] = ((delaycount - 1) & 0xff00) >> 8;
588 arg[2] = ((delaycount - 1) & 0xff0000) >> 16;
589 arg[3] = ((delaycount - 1) & 0xff000000) >> 24;
590 if (write_longcommand(devc, CMD_CAPTURE_COUNT, arg) != SR_OK)
594 sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
595 devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
596 devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
597 devc->flag_reg & FLAG_RLE ? "on" : "off",
598 devc->flag_reg & FLAG_FILTER ? "on": "off",
599 devc->flag_reg & FLAG_DEMUX ? "on" : "off");
602 * Enable/disable OLS channel groups in the flag register according
603 * to the channel mask. 1 means "disable channel".
605 devc->flag_reg &= ~0x3c;
606 devc->flag_reg |= ~(pols_changrp_mask << 2) & 0x3c;
607 sr_dbg("flag_reg = %x", devc->flag_reg);
610 * In demux mode the OLS is processing two 8-bit or 16-bit samples
611 * in parallel and for this to work the lower two bits of the four
612 * "channel_disable" bits must be replicated to the upper two bits.
614 flag_tmp = devc->flag_reg;
615 if (devc->flag_reg & FLAG_DEMUX) {
617 flag_tmp |= ~(pols_changrp_mask << 4) & 0x30;
619 arg[0] = flag_tmp & 0xff;
620 arg[1] = flag_tmp >> 8;
621 arg[2] = arg[3] = 0x00;
622 if (write_longcommand(devc, CMD_SET_FLAGS, arg) != SR_OK)
625 /* Start acquisition on the device. */
626 if (write_shortcommand(devc, CMD_RUN) != SR_OK)
629 /* Reset all operational states. */
630 devc->rle_count = devc->num_transfers = 0;
631 devc->num_samples = devc->num_bytes = 0;
632 devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
633 memset(devc->sample, 0, 4);
635 std_session_send_df_header(sdi);
637 /* Hook up a dummy handler to receive data from the device. */
638 sr_session_source_add(sdi->session, -1, 0, 10, p_ols_receive_data,
639 (struct sr_dev_inst *)sdi);
644 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
646 struct dev_context *devc;
650 write_shortcommand(devc, CMD_RESET);
651 write_shortcommand(devc, CMD_RESET);
652 write_shortcommand(devc, CMD_RESET);
653 write_shortcommand(devc, CMD_RESET);
654 write_shortcommand(devc, CMD_RESET);
656 sr_session_source_remove(sdi->session, -1);
658 std_session_send_df_end(sdi);
663 SR_PRIV struct sr_dev_driver p_ols_driver_info = {
665 .longname = "Pipistrello OLS",
668 .cleanup = std_cleanup,
670 .dev_list = std_dev_list,
671 .dev_clear = dev_clear,
672 .config_get = config_get,
673 .config_set = config_set,
674 .config_list = config_list,
675 .dev_open = dev_open,
676 .dev_close = dev_close,
677 .dev_acquisition_start = dev_acquisition_start,
678 .dev_acquisition_stop = dev_acquisition_stop,
681 SR_REGISTER_DEV_DRIVER(p_ols_driver_info);