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/>.
21 #include <libserialport.h>
23 #define SERIALCOMM "115200/8n1"
25 static const int32_t hwopts[] = {
30 static const int32_t hwcaps[] = {
31 SR_CONF_LOGIC_ANALYZER,
33 SR_CONF_TRIGGER_MATCH,
34 SR_CONF_CAPTURE_RATIO,
35 SR_CONF_LIMIT_SAMPLES,
36 SR_CONF_EXTERNAL_CLOCK,
42 static const int32_t trigger_matches[] = {
47 #define STR_PATTERN_NONE "None"
48 #define STR_PATTERN_EXTERNAL "External"
49 #define STR_PATTERN_INTERNAL "Internal"
51 /* Supported methods of test pattern outputs */
54 * Capture pins 31:16 (unbuffered wing) output a test pattern
55 * that can captured on pins 0:15.
59 /** Route test pattern internally to capture buffer. */
63 static const char *patterns[] = {
69 /* Channels are numbered 0-31 (on the PCB silkscreen). */
70 SR_PRIV const char *ols_channel_names[NUM_CHANNELS + 1] = {
71 "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",
72 "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23",
73 "24", "25", "26", "27", "28", "29", "30", "31",
77 /* Default supported samplerates, can be overridden by device metadata. */
78 static const uint64_t samplerates[] = {
84 SR_PRIV struct sr_dev_driver ols_driver_info;
85 static struct sr_dev_driver *di = &ols_driver_info;
87 static int init(struct sr_context *sr_ctx)
89 return std_init(sr_ctx, di, LOG_PREFIX);
92 static GSList *scan(GSList *options)
94 struct sr_config *src;
95 struct sr_dev_inst *sdi;
96 struct drv_context *drvc;
97 struct dev_context *devc;
98 struct sr_channel *ch;
99 struct sr_serial_dev_inst *serial;
103 const char *conn, *serialcomm;
110 conn = serialcomm = NULL;
111 for (l = options; l; l = l->next) {
115 conn = g_variant_get_string(src->data, NULL);
117 case SR_CONF_SERIALCOMM:
118 serialcomm = g_variant_get_string(src->data, NULL);
125 if (serialcomm == NULL)
126 serialcomm = SERIALCOMM;
128 if (!(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 | SERIAL_NONBLOCK) != 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 /* Wait 10ms for a response. */
158 sp_get_port_handle(serial->data, &probefd.fd);
159 probefd.events = G_IO_IN;
160 g_poll(&probefd, 1, 1);
162 if (probefd.revents != G_IO_IN)
164 if (serial_read_blocking(serial, buf, 4) != 4)
166 if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
169 /* Definitely using the OLS protocol, check if it supports
170 * the metadata command.
172 send_shortcommand(serial, CMD_METADATA);
173 if (g_poll(&probefd, 1, 10) > 0) {
175 sdi = get_metadata(serial);
179 /* Not an OLS -- some other board that uses the sump protocol. */
180 sr_info("Device does not support metadata.");
181 sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
182 "Sump", "Logic Analyzer", "v1.0");
184 for (i = 0; i < 32; i++) {
185 if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE,
186 ols_channel_names[i])))
188 sdi->channels = g_slist_append(sdi->channels, ch);
190 devc = ols_dev_new();
193 /* Configure samplerate and divider. */
194 if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK)
195 sr_dbg("Failed to set default samplerate (%"PRIu64").",
197 sdi->inst_type = SR_INST_SERIAL;
200 drvc->instances = g_slist_append(drvc->instances, sdi);
201 devices = g_slist_append(devices, sdi);
203 serial_close(serial);
208 static GSList *dev_list(void)
210 return ((struct drv_context *)(di->priv))->instances;
213 static int cleanup(void)
215 return std_dev_clear(di, NULL);
218 static int config_get(int id, 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(int id, 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) {
290 devc->capture_ratio = 0;
295 case SR_CONF_EXTERNAL_CLOCK:
296 if (g_variant_get_boolean(data)) {
297 sr_info("Enabling external clock.");
298 devc->flag_reg |= FLAG_CLOCK_EXTERNAL;
300 sr_info("Disabled external clock.");
301 devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL;
305 case SR_CONF_PATTERN_MODE:
306 stropt = g_variant_get_string(data, NULL);
309 if (!strcmp(stropt, STR_PATTERN_NONE)) {
310 sr_info("Disabling test modes.");
312 }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) {
313 sr_info("Enabling internal test mode.");
314 flag = FLAG_INTERNAL_TEST_MODE;
315 } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) {
316 sr_info("Enabling external test mode.");
317 flag = FLAG_EXTERNAL_TEST_MODE;
321 if (flag != 0xffff) {
322 devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE);
323 devc->flag_reg |= flag;
327 if (g_variant_get_boolean(data)) {
328 sr_info("Enabling channel swapping.");
329 devc->flag_reg |= FLAG_SWAP_CHANNELS;
331 sr_info("Disabling channel swapping.");
332 devc->flag_reg &= ~FLAG_SWAP_CHANNELS;
338 if (g_variant_get_boolean(data)) {
339 sr_info("Enabling RLE.");
340 devc->flag_reg |= FLAG_RLE;
342 sr_info("Disabling RLE.");
343 devc->flag_reg &= ~FLAG_RLE;
354 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
355 const struct sr_channel_group *cg)
357 struct dev_context *devc;
358 GVariant *gvar, *grange[2];
360 int num_ols_changrp, i;
365 case SR_CONF_SCAN_OPTIONS:
366 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
367 hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
369 case SR_CONF_DEVICE_OPTIONS:
370 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
371 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
373 case SR_CONF_SAMPLERATE:
374 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
375 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
376 ARRAY_SIZE(samplerates), sizeof(uint64_t));
377 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
378 *data = g_variant_builder_end(&gvb);
380 case SR_CONF_TRIGGER_MATCH:
381 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
382 trigger_matches, ARRAY_SIZE(trigger_matches),
385 case SR_CONF_PATTERN_MODE:
386 *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns));
388 case SR_CONF_LIMIT_SAMPLES:
392 if (devc->flag_reg & FLAG_RLE)
394 if (devc->max_samples == 0)
395 /* Device didn't specify sample memory size in metadata. */
398 * Channel groups are turned off if no channels in that group are
399 * enabled, making more room for samples for the enabled group.
401 ols_channel_mask(sdi);
403 for (i = 0; i < 4; i++) {
404 if (devc->channel_mask & (0xff << (i * 8)))
407 grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES);
409 grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp);
411 grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES);
412 *data = g_variant_new_tuple(grange, 2);
421 static int set_trigger(const struct sr_dev_inst *sdi, int stage)
423 struct dev_context *devc;
424 struct sr_serial_dev_inst *serial;
430 cmd = CMD_SET_TRIGGER_MASK + stage * 4;
431 arg[0] = devc->trigger_mask[stage] & 0xff;
432 arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff;
433 arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff;
434 arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff;
435 if (send_longcommand(serial, cmd, arg) != SR_OK)
438 cmd = CMD_SET_TRIGGER_VALUE + stage * 4;
439 arg[0] = devc->trigger_value[stage] & 0xff;
440 arg[1] = (devc->trigger_value[stage] >> 8) & 0xff;
441 arg[2] = (devc->trigger_value[stage] >> 16) & 0xff;
442 arg[3] = (devc->trigger_value[stage] >> 24) & 0xff;
443 if (send_longcommand(serial, cmd, arg) != SR_OK)
446 cmd = CMD_SET_TRIGGER_CONFIG + stage * 4;
447 arg[0] = arg[1] = arg[3] = 0x00;
449 if (stage == devc->num_stages)
450 /* Last stage, fire when this one matches. */
451 arg[3] |= TRIGGER_START;
452 if (send_longcommand(serial, cmd, arg) != SR_OK)
458 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
461 struct dev_context *devc;
462 struct sr_serial_dev_inst *serial;
463 uint16_t samplecount, readcount, delaycount;
464 uint8_t ols_changrp_mask, arg[4];
468 if (sdi->status != SR_ST_ACTIVE)
469 return SR_ERR_DEV_CLOSED;
474 ols_channel_mask(sdi);
477 ols_changrp_mask = 0;
478 for (i = 0; i < 4; i++) {
479 if (devc->channel_mask & (0xff << (i * 8))) {
480 ols_changrp_mask |= (1 << i);
486 * Limit readcount to prevent reading past the end of the hardware
489 samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples);
490 readcount = samplecount / 4;
492 /* Rather read too many samples than too few. */
493 if (samplecount % 4 != 0)
496 /* Basic triggers. */
497 if (ols_convert_trigger(sdi) != SR_OK) {
498 sr_err("Failed to configure channels.");
501 if (devc->num_stages > 0) {
502 delaycount = readcount * (1 - devc->capture_ratio / 100.0);
503 devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;
504 for (i = 0; i <= devc->num_stages; i++) {
505 sr_dbg("Setting OLS stage %d trigger.", i);
506 if ((ret = set_trigger(sdi, i)) != SR_OK)
510 /* No triggers configured, force trigger on first stage. */
511 sr_dbg("Forcing trigger at stage 0.");
512 if ((ret = set_trigger(sdi, 0)) != SR_OK)
514 delaycount = readcount;
518 sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)",
519 devc->cur_samplerate, devc->cur_samplerate_divider);
520 arg[0] = devc->cur_samplerate_divider & 0xff;
521 arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8;
522 arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16;
524 if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK)
527 /* Send sample limit and pre/post-trigger capture ratio. */
528 sr_dbg("Setting sample limit %d, trigger point at %d",
529 (readcount - 1) * 4, (delaycount - 1) * 4);
530 arg[0] = ((readcount - 1) & 0xff);
531 arg[1] = ((readcount - 1) & 0xff00) >> 8;
532 arg[2] = ((delaycount - 1) & 0xff);
533 arg[3] = ((delaycount - 1) & 0xff00) >> 8;
534 if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK)
538 sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s",
539 devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off",
540 devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off",
541 devc->flag_reg & FLAG_RLE ? "on" : "off",
542 devc->flag_reg & FLAG_FILTER ? "on": "off",
543 devc->flag_reg & FLAG_DEMUX ? "on" : "off");
545 * Enable/disable OLS channel groups in the flag register according
546 * to the channel mask. 1 means "disable channel".
548 devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c;
549 arg[0] = devc->flag_reg & 0xff;
550 arg[1] = devc->flag_reg >> 8;
551 arg[2] = arg[3] = 0x00;
552 if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK)
555 /* Start acquisition on the device. */
556 if (send_shortcommand(serial, CMD_RUN) != SR_OK)
559 /* Reset all operational states. */
560 devc->rle_count = devc->num_transfers = 0;
561 devc->num_samples = devc->num_bytes = 0;
562 devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0;
563 memset(devc->sample, 0, 4);
565 /* Send header packet to the session bus. */
566 std_session_send_df_header(cb_data, LOG_PREFIX);
568 serial_source_add(sdi->session, serial, G_IO_IN, -1,
569 ols_receive_data, cb_data);
574 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
578 abort_acquisition(sdi);
583 SR_PRIV struct sr_dev_driver ols_driver_info = {
585 .longname = "Openbench Logic Sniffer",
590 .dev_list = dev_list,
592 .config_get = config_get,
593 .config_set = config_set,
594 .config_list = config_list,
595 .dev_open = std_serial_dev_open,
596 .dev_close = std_serial_dev_close,
597 .dev_acquisition_start = dev_acquisition_start,
598 .dev_acquisition_stop = dev_acquisition_stop,