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 #define SERIALCOMM "115200/8n1"
25 static const uint32_t drvopts[] = {
26 SR_CONF_LOGIC_ANALYZER,
29 static const uint32_t scanopts[] = {
34 static const uint32_t devopts[] = {
35 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
36 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
37 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
38 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
39 SR_CONF_EXTERNAL_CLOCK | SR_CONF_SET,
40 SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
41 SR_CONF_SWAP | SR_CONF_SET,
42 SR_CONF_RLE | SR_CONF_GET | SR_CONF_SET,
45 static const int32_t trigger_matches[] = {
50 #define STR_PATTERN_NONE "None"
51 #define STR_PATTERN_EXTERNAL "External"
52 #define STR_PATTERN_INTERNAL "Internal"
54 /* Supported methods of test pattern outputs */
57 * Capture pins 31:16 (unbuffered wing) output a test pattern
58 * that can captured on pins 0:15.
62 /** Route test pattern internally to capture buffer. */
66 static const char *patterns[] = {
72 /* Channels are numbered 0-31 (on the PCB silkscreen). */
73 SR_PRIV const char *ols_channel_names[] = {
74 "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
75 "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
76 "24", "25", "26", "27", "28", "29", "30", "31",
79 /* Default supported samplerates, can be overridden by device metadata. */
80 static const uint64_t samplerates[] = {
86 #define RESPONSE_DELAY_US (10 * 1000)
88 SR_PRIV struct sr_dev_driver ols_driver_info;
90 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
92 return std_init(sr_ctx, di, LOG_PREFIX);
95 static GSList *scan(struct sr_dev_driver *di, GSList *options)
97 struct sr_config *src;
98 struct sr_dev_inst *sdi;
99 struct drv_context *drvc;
100 struct sr_serial_dev_inst *serial;
104 const char *conn, *serialcomm;
111 conn = serialcomm = NULL;
112 for (l = options; l; l = l->next) {
116 conn = g_variant_get_string(src->data, NULL);
118 case SR_CONF_SERIALCOMM:
119 serialcomm = g_variant_get_string(src->data, NULL);
127 serialcomm = SERIALCOMM;
129 serial = sr_serial_dev_inst_new(conn, serialcomm);
131 /* The discovery procedure is like this: first send the Reset
132 * command (0x00) 5 times, since the device could be anywhere
133 * in a 5-byte command. Then send the ID command (0x02).
134 * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
137 sr_info("Probing %s.", conn);
138 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
142 for (i = 0; i < 5; i++) {
143 if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) {
144 sr_err("Port %s is not writable.", conn);
149 serial_close(serial);
150 sr_err("Could not use port %s. Quitting.", conn);
153 send_shortcommand(serial, CMD_ID);
155 g_usleep(RESPONSE_DELAY_US);
157 if (sp_input_waiting(serial->data) == 0) {
158 sr_dbg("Didn't get any reply.");
162 ret = serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4));
164 sr_err("Invalid reply (expected 4 bytes, got %d).", ret);
168 if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) {
169 sr_err("Invalid reply (expected '1SLO' or '1ALS', got "
170 "'%c%c%c%c').", buf[0], buf[1], buf[2], buf[3]);
174 /* Definitely using the OLS protocol, check if it supports
175 * the metadata command.
177 send_shortcommand(serial, CMD_METADATA);
179 g_usleep(RESPONSE_DELAY_US);
181 if (sp_input_waiting(serial->data) != 0) {
183 sdi = get_metadata(serial);
185 /* Not an OLS -- some other board that uses the sump protocol. */
186 sr_info("Device does not support metadata.");
187 sdi = g_malloc0(sizeof(struct sr_dev_inst));
188 sdi->status = SR_ST_INACTIVE;
189 sdi->vendor = g_strdup("Sump");
190 sdi->model = g_strdup("Logic Analyzer");
191 sdi->version = g_strdup("v1.0");
193 for (i = 0; i < ARRAY_SIZE(ols_channel_names); i++)
194 sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
195 ols_channel_names[i]);
196 sdi->priv = ols_dev_new();
198 /* Configure samplerate and divider. */
199 if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
200 sr_dbg("Failed to set default samplerate (%"PRIu64").",
202 sdi->inst_type = SR_INST_SERIAL;
205 drvc->instances = g_slist_append(drvc->instances, sdi);
206 devices = g_slist_append(devices, sdi);
208 serial_close(serial);
213 static GSList *dev_list(const struct sr_dev_driver *di)
215 return ((struct drv_context *)(di->context))->instances;
218 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
219 const struct sr_channel_group *cg)
221 struct dev_context *devc;
230 case SR_CONF_SAMPLERATE:
231 *data = g_variant_new_uint64(devc->cur_samplerate);
233 case SR_CONF_CAPTURE_RATIO:
234 *data = g_variant_new_uint64(devc->capture_ratio);
236 case SR_CONF_LIMIT_SAMPLES:
237 *data = g_variant_new_uint64(devc->limit_samples);
239 case SR_CONF_PATTERN_MODE:
240 if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE)
241 *data = g_variant_new_string(STR_PATTERN_EXTERNAL);
242 else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE)
243 *data = g_variant_new_string(STR_PATTERN_INTERNAL);
245 *data = g_variant_new_string(STR_PATTERN_NONE);
248 *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE);
257 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
258 const struct sr_channel_group *cg)
260 struct dev_context *devc;
268 if (sdi->status != SR_ST_ACTIVE)
269 return SR_ERR_DEV_CLOSED;
274 case SR_CONF_SAMPLERATE:
275 tmp_u64 = g_variant_get_uint64(data);
276 if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1])
277 return SR_ERR_SAMPLERATE;
278 ret = ols_set_samplerate(sdi, g_variant_get_uint64(data));
280 case SR_CONF_LIMIT_SAMPLES:
281 tmp_u64 = g_variant_get_uint64(data);
282 if (tmp_u64 < MIN_NUM_SAMPLES)
284 devc->limit_samples = tmp_u64;
287 case SR_CONF_CAPTURE_RATIO:
288 devc->capture_ratio = g_variant_get_uint64(data);
289 if (devc->capture_ratio < 0 || devc->capture_ratio > 100)
294 case SR_CONF_EXTERNAL_CLOCK:
295 if (g_variant_get_boolean(data)) {
296 sr_info("Enabling external clock.");
297 devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
299 sr_info("Disabled external clock.");
300 devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
304 case SR_CONF_PATTERN_MODE:
305 stropt = g_variant_get_string(data, NULL);
308 if (!strcmp(stropt, STR_PATTERN_NONE)) {
309 sr_info("Disabling test modes.");
311 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
312 sr_info("Enabling internal test mode.");
313 flag = FLAG_INTERNAL_TEST_MODE;
314 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
315 sr_info("Enabling external test mode.");
316 flag = FLAG_EXTERNAL_TEST_MODE;
320 if (flag != 0xffff) {
321 devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
322 devc->flag_reg |= flag;
326 if (g_variant_get_boolean(data)) {
327 sr_info("Enabling channel swapping.");
328 devc->flag_reg |= FLAG_SWAP_CHANNELS;
330 sr_info("Disabling channel swapping.");
331 devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
337 if (g_variant_get_boolean(data)) {
338 sr_info("Enabling RLE.");
339 devc->flag_reg |= FLAG_RLE;
341 sr_info("Disabling RLE.");
342 devc->flag_reg &= ~FLAG_RLE;
353 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
354 const struct sr_channel_group *cg)
356 struct dev_context *devc;
357 GVariant *gvar, *grange[2];
359 int num_ols_changrp, i;
364 case SR_CONF_SCAN_OPTIONS:
365 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
366 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
368 case SR_CONF_DEVICE_OPTIONS:
370 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
371 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
373 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
374 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
376 case SR_CONF_SAMPLERATE:
377 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
378 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
379 ARRAY_SIZE(samplerates), sizeof(uint64_t));
380 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
381 *data = g_variant_builder_end(&gvb);
383 case SR_CONF_TRIGGER_MATCH:
384 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
385 trigger_matches, ARRAY_SIZE(trigger_matches),
388 case SR_CONF_PATTERN_MODE:
389 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
391 case SR_CONF_LIMIT_SAMPLES:
395 if (devc->flag_reg & FLAG_RLE)
397 if (devc->max_samples == 0)
398 /* Device didn't specify sample memory size in metadata. */
401 * Channel groups are turned off if no channels in that group are
402 * enabled, making more room for samples for the enabled group.
404 ols_channel_mask(sdi);
406 for (i = 0; i < 4; i++) {
407 if (devc->channel_mask & (0xff << (i * 8)))
410 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
412 grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
414 grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
415 *data = g_variant_new_tuple(grange, 2);
424 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
426 struct dev_context *devc;
427 struct sr_serial_dev_inst *serial;
433 cmd = CMD_SET_TRIGGER_MASK + stage * 4;
434 arg[0] = devc->trigger_mask[stage] & 0xff;
435 arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
436 arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
437 arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
438 if (send_longcommand(serial, cmd, arg) != SR_OK)
441 cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
442 arg[0] = devc->trigger_value[stage] & 0xff;
443 arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
444 arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
445 arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
446 if (send_longcommand(serial, cmd, arg) != SR_OK)
449 cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
450 arg[0] = arg[1] = arg[3] = 0x00;
452 if (stage == devc->num_stages)
453 /* Last stage, fire when this one matches. */
454 arg[3] |= TRIGGER_START;
455 if (send_longcommand(serial, cmd, arg) != SR_OK)
461 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
463 struct dev_context *devc;
464 struct sr_serial_dev_inst *serial;
465 uint16_t samplecount, readcount, delaycount;
466 uint8_t ols_changrp_mask, arg[4];
470 if (sdi->status != SR_ST_ACTIVE)
471 return SR_ERR_DEV_CLOSED;
476 ols_channel_mask(sdi);
479 ols_changrp_mask = 0;
480 for (i = 0; i < 4; i++) {
481 if (devc->channel_mask & (0xff << (i * 8))) {
482 ols_changrp_mask |= (1 << i);
488 * Limit readcount to prevent reading past the end of the hardware
491 samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples);
492 readcount = samplecount / 4;
494 /* Rather read too many samples than too few. */
495 if (samplecount % 4 != 0)
498 /* Basic triggers. */
499 if (ols_convert_trigger(sdi) != SR_OK) {
500 sr_err("Failed to configure channels.");
503 if (devc->num_stages > 0) {
504 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
505 devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
506 for (i = 0; i <= devc->num_stages; i++) {
507 sr_dbg("Setting OLS stage %d trigger.", i);
508 if ((ret = set_trigger(sdi, i)) != SR_OK)
512 /* No triggers configured, force trigger on first stage. */
513 sr_dbg("Forcing trigger at stage 0.");
514 if ((ret = set_trigger(sdi, 0)) != SR_OK)
516 delaycount = readcount;
520 sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
521 devc->cur_samplerate, devc->cur_samplerate_divider);
522 arg[0] = devc->cur_samplerate_divider & 0xff;
523 arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
524 arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
526 if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK)
529 /* Send sample limit and pre/post-trigger capture ratio. */
530 sr_dbg("Setting sample limit %d, trigger point at %d",
531 (readcount - 1) * 4, (delaycount - 1) * 4);
532 arg[0] = ((readcount - 1) & 0xff);
533 arg[1] = ((readcount - 1) & 0xff00) >> 8;
534 arg[2] = ((delaycount - 1) & 0xff);
535 arg[3] = ((delaycount - 1) & 0xff00) >> 8;
536 if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK)
540 sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
541 devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
542 devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
543 devc->flag_reg & FLAG_RLE ? "on" : "off",
544 devc->flag_reg & FLAG_FILTER ? "on": "off",
545 devc->flag_reg & FLAG_DEMUX ? "on" : "off");
547 * Enable/disable OLS channel groups in the flag register according
548 * to the channel mask. 1 means "disable channel".
550 devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c;
551 arg[0] = devc->flag_reg & 0xff;
552 arg[1] = devc->flag_reg >> 8;
553 arg[2] = arg[3] = 0x00;
554 if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK)
557 /* Start acquisition on the device. */
558 if (send_shortcommand(serial, CMD_RUN) != SR_OK)
561 /* Reset all operational states. */
562 devc->rle_count = devc->num_transfers = 0;
563 devc->num_samples = devc->num_bytes = 0;
564 devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
565 memset(devc->sample, 0, 4);
567 std_session_send_df_header(sdi, LOG_PREFIX);
569 /* If the device stops sending for longer than it takes to send a byte,
570 * that means it's finished. But wait at least 100 ms to be safe.
572 serial_source_add(sdi->session, serial, G_IO_IN, 100,
573 ols_receive_data, (struct sr_dev_inst *)sdi);
578 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
580 abort_acquisition(sdi);
585 SR_PRIV struct sr_dev_driver ols_driver_info = {
587 .longname = "Openbench Logic Sniffer",
590 .cleanup = std_cleanup,
592 .dev_list = dev_list,
594 .config_get = config_get,
595 .config_set = config_set,
596 .config_list = config_list,
597 .dev_open = std_serial_dev_open,
598 .dev_close = std_serial_dev_close,
599 .dev_acquisition_start = dev_acquisition_start,
600 .dev_acquisition_stop = dev_acquisition_stop,