2 * This file is part of the sigrok project.
4 * Copyright (C) 2010-2012 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 #include <sys/types.h>
38 #include <arpa/inet.h>
41 #include "libsigrok.h"
42 #include "libsigrok-internal.h"
46 #define O_NONBLOCK FIONBIO
49 static const int hwcaps[] = {
50 SR_HWCAP_LOGIC_ANALYZER,
52 SR_HWCAP_CAPTURE_RATIO,
53 SR_HWCAP_LIMIT_SAMPLES,
58 /* Probes are numbered 0-31 (on the PCB silkscreen). */
59 static const char *probe_names[NUM_PROBES + 1] = {
95 /* default supported samplerates, can be overridden by device metadata */
96 static const struct sr_samplerates samplerates = {
103 SR_PRIV struct sr_dev_driver ols_driver_info;
104 static struct sr_dev_driver *odi = &ols_driver_info;
106 static int send_shortcommand(int fd, uint8_t command)
110 sr_dbg("ols: sending cmd 0x%.2x", command);
112 if (serial_write(fd, buf, 1) != 1)
118 static int send_longcommand(int fd, uint8_t command, uint32_t data)
122 sr_dbg("ols: sending cmd 0x%.2x data 0x%.8x", command, data);
124 buf[1] = (data & 0xff000000) >> 24;
125 buf[2] = (data & 0xff0000) >> 16;
126 buf[3] = (data & 0xff00) >> 8;
127 buf[4] = data & 0xff;
128 if (serial_write(fd, buf, 5) != 5)
134 static int configure_probes(struct context *ctx, const GSList *probes)
136 const struct sr_probe *probe;
138 int probe_bit, stage, i;
142 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
143 ctx->trigger_mask[i] = 0;
144 ctx->trigger_value[i] = 0;
148 for (l = probes; l; l = l->next) {
149 probe = (const struct sr_probe *)l->data;
154 * Set up the probe mask for later configuration into the
157 probe_bit = 1 << (probe->index - 1);
158 ctx->probe_mask |= probe_bit;
163 /* Configure trigger mask and value. */
165 for (tc = probe->trigger; tc && *tc; tc++) {
166 ctx->trigger_mask[stage] |= probe_bit;
168 ctx->trigger_value[stage] |= probe_bit;
172 * TODO: Only supporting parallel mode, with
177 if (stage > ctx->num_stages)
178 ctx->num_stages = stage;
184 static uint32_t reverse16(uint32_t in)
188 out = (in & 0xff) << 8;
189 out |= (in & 0xff00) >> 8;
190 out |= (in & 0xff0000) << 8;
191 out |= (in & 0xff000000) >> 8;
196 static uint32_t reverse32(uint32_t in)
200 out = (in & 0xff) << 24;
201 out |= (in & 0xff00) << 8;
202 out |= (in & 0xff0000) >> 8;
203 out |= (in & 0xff000000) >> 24;
208 static struct context *ols_dev_new(void)
212 /* TODO: Is 'ctx' ever g_free()'d? */
213 if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
214 sr_err("ols: %s: ctx malloc failed", __func__);
218 ctx->trigger_at = -1;
219 ctx->probe_mask = 0xffffffff;
220 ctx->cur_samplerate = SR_KHZ(200);
226 static struct sr_dev_inst *get_metadata(int fd)
228 struct sr_dev_inst *sdi;
230 struct sr_probe *probe;
231 uint32_t tmp_int, ui;
232 uint8_t key, type, token;
233 GString *tmp_str, *devname, *version;
236 sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, NULL, NULL, NULL);
241 devname = g_string_new("");
242 version = g_string_new("");
246 if (serial_read(fd, &key, 1) != 1 || key == 0x00)
252 /* NULL-terminated string */
253 tmp_str = g_string_new("");
254 while (serial_read(fd, &tmp_c, 1) == 1 && tmp_c != '\0')
255 g_string_append_c(tmp_str, tmp_c);
256 sr_dbg("ols: got metadata key 0x%.2x value '%s'",
261 devname = g_string_append(devname, tmp_str->str);
264 /* FPGA firmware version */
266 g_string_append(version, ", ");
267 g_string_append(version, "FPGA version ");
268 g_string_append(version, tmp_str->str);
271 /* Ancillary version */
273 g_string_append(version, ", ");
274 g_string_append(version, "Ancillary version ");
275 g_string_append(version, tmp_str->str);
278 sr_info("ols: unknown token 0x%.2x: '%s'",
279 token, tmp_str->str);
282 g_string_free(tmp_str, TRUE);
285 /* 32-bit unsigned integer */
286 if (serial_read(fd, &tmp_int, 4) != 4)
288 tmp_int = reverse32(tmp_int);
289 sr_dbg("ols: got metadata key 0x%.2x value 0x%.8x",
293 /* Number of usable probes */
294 for (ui = 0; ui < tmp_int; ui++) {
295 if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE,
298 sdi->probes = g_slist_append(sdi->probes, probe);
302 /* Amount of sample memory available (bytes) */
303 ctx->max_samples = tmp_int;
306 /* Amount of dynamic memory available (bytes) */
307 /* what is this for? */
310 /* Maximum sample rate (hz) */
311 ctx->max_samplerate = tmp_int;
314 /* protocol version */
315 ctx->protocol_version = tmp_int;
318 sr_info("ols: unknown token 0x%.2x: 0x%.8x",
324 /* 8-bit unsigned integer */
325 if (serial_read(fd, &tmp_c, 1) != 1)
327 sr_dbg("ols: got metadata key 0x%.2x value 0x%.2x",
331 /* Number of usable probes */
332 for (ui = 0; ui < tmp_c; ui++) {
333 if (!(probe = sr_probe_new(ui, SR_PROBE_LOGIC, TRUE,
336 sdi->probes = g_slist_append(sdi->probes, probe);
340 /* protocol version */
341 ctx->protocol_version = tmp_c;
344 sr_info("ols: unknown token 0x%.2x: 0x%.2x",
355 sdi->model = devname->str;
356 sdi->version = version->str;
357 g_string_free(devname, FALSE);
358 g_string_free(version, FALSE);
363 static int hw_init(void)
371 static GSList *hw_scan(GSList *options)
373 struct sr_dev_inst *sdi;
375 struct sr_probe *probe;
376 GSList *devices, *ports, *l;
377 GPollFD *fds, probefd;
378 int devcnt, final_devcnt, num_ports, fd, ret, i, j;
379 char buf[8], **dev_names, **serial_params;
385 /* Scan all serial ports. */
386 ports = list_serial_ports();
387 num_ports = g_slist_length(ports);
389 if (!(fds = g_try_malloc0(num_ports * sizeof(GPollFD)))) {
390 sr_err("ols: %s: fds malloc failed", __func__);
391 goto hw_init_free_ports; /* TODO: SR_ERR_MALLOC. */
394 if (!(dev_names = g_try_malloc(num_ports * sizeof(char *)))) {
395 sr_err("ols: %s: dev_names malloc failed", __func__);
396 goto hw_init_free_fds; /* TODO: SR_ERR_MALLOC. */
399 if (!(serial_params = g_try_malloc(num_ports * sizeof(char *)))) {
400 sr_err("ols: %s: serial_params malloc failed", __func__);
401 goto hw_init_free_dev_names; /* TODO: SR_ERR_MALLOC. */
405 for (l = ports; l; l = l->next) {
406 /* The discovery procedure is like this: first send the Reset
407 * command (0x00) 5 times, since the device could be anywhere
408 * in a 5-byte command. Then send the ID command (0x02).
409 * If the device responds with 4 bytes ("OLS1" or "SLA1"), we
412 * Since it may take the device a while to respond at 115Kb/s,
413 * we do all the sending first, then wait for all of them to
414 * respond with g_poll().
416 sr_info("ols: probing %s...", (char *)l->data);
417 fd = serial_open(l->data, O_RDWR | O_NONBLOCK);
419 serial_params[devcnt] = serial_backup_params(fd);
420 serial_set_params(fd, 115200, 8, SERIAL_PARITY_NONE, 1, 2);
422 for (i = 0; i < 5; i++) {
423 if ((ret = send_shortcommand(fd,
424 CMD_RESET)) != SR_OK) {
425 /* Serial port is not writable. */
430 serial_restore_params(fd,
431 serial_params[devcnt]);
435 send_shortcommand(fd, CMD_ID);
437 fds[devcnt].events = G_IO_IN;
438 dev_names[devcnt] = g_strdup(l->data);
444 /* 2ms isn't enough for reliable transfer with pl2303, let's try 10 */
447 g_poll(fds, devcnt, 1);
449 for (i = 0; i < devcnt; i++) {
450 if (fds[i].revents != G_IO_IN)
452 if (serial_read(fds[i].fd, buf, 4) != 4)
454 if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4))
457 /* definitely using the OLS protocol, check if it supports
458 * the metadata command
460 send_shortcommand(fds[i].fd, CMD_METADATA);
461 probefd.fd = fds[i].fd;
462 probefd.events = G_IO_IN;
463 if (g_poll(&probefd, 1, 10) > 0) {
465 sdi = get_metadata(fds[i].fd);
466 sdi->index = final_devcnt;
469 /* not an OLS -- some other board that uses the sump protocol */
470 sdi = sr_dev_inst_new(final_devcnt, SR_ST_INACTIVE,
471 "Sump", "Logic Analyzer", "v1.0");
474 for (j = 0; j < 32; j++) {
475 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
478 sdi->probes = g_slist_append(sdi->probes, probe);
482 ctx->serial = sr_serial_dev_inst_new(dev_names[i], -1);
483 odi->instances = g_slist_append(odi->instances, sdi);
484 devices = g_slist_append(devices, sdi);
487 serial_close(fds[i].fd);
491 /* clean up after all the probing */
492 for (i = 0; i < devcnt; i++) {
493 if (fds[i].fd != 0) {
494 serial_restore_params(fds[i].fd, serial_params[i]);
495 serial_close(fds[i].fd);
497 g_free(serial_params[i]);
498 g_free(dev_names[i]);
501 g_free(serial_params);
502 hw_init_free_dev_names:
512 static int hw_dev_open(int dev_index)
514 struct sr_dev_inst *sdi;
517 if (!(sdi = sr_dev_inst_get(odi->instances, dev_index)))
522 ctx->serial->fd = serial_open(ctx->serial->port, O_RDWR);
523 if (ctx->serial->fd == -1)
526 sdi->status = SR_ST_ACTIVE;
531 static int hw_dev_close(int dev_index)
533 struct sr_dev_inst *sdi;
536 if (!(sdi = sr_dev_inst_get(odi->instances, dev_index))) {
537 sr_err("ols: %s: sdi was NULL", __func__);
544 if (ctx->serial->fd != -1) {
545 serial_close(ctx->serial->fd);
546 ctx->serial->fd = -1;
547 sdi->status = SR_ST_INACTIVE;
553 static int hw_cleanup(void)
556 struct sr_dev_inst *sdi;
560 /* Properly close and free all devices. */
561 for (l = odi->instances; l; l = l->next) {
562 if (!(sdi = l->data)) {
563 /* Log error, but continue cleaning up the rest. */
564 sr_err("ols: %s: sdi was NULL, continuing", __func__);
568 if (!(ctx = sdi->priv)) {
569 /* Log error, but continue cleaning up the rest. */
570 sr_err("ols: %s: sdi->priv was NULL, continuing",
575 /* TODO: Check for serial != NULL. */
576 if (ctx->serial->fd != -1)
577 serial_close(ctx->serial->fd);
578 sr_serial_dev_inst_free(ctx->serial);
579 sr_dev_inst_free(sdi);
581 g_slist_free(odi->instances);
582 odi->instances = NULL;
587 static int hw_info_get(int info_id, const void **data,
588 const struct sr_dev_inst *sdi)
599 case SR_DI_NUM_PROBES:
600 *data = GINT_TO_POINTER(1);
602 case SR_DI_PROBE_NAMES:
605 case SR_DI_SAMPLERATES:
606 *data = &samplerates;
608 case SR_DI_TRIGGER_TYPES:
609 *data = (char *)TRIGGER_TYPES;
611 case SR_DI_CUR_SAMPLERATE:
614 *data = &ctx->cur_samplerate;
625 static int hw_dev_status_get(int dev_index)
627 struct sr_dev_inst *sdi;
629 if (!(sdi = sr_dev_inst_get(odi->instances, dev_index)))
630 return SR_ST_NOT_FOUND;
635 static int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate)
640 if (ctx->max_samplerate) {
641 if (samplerate > ctx->max_samplerate)
642 return SR_ERR_SAMPLERATE;
643 } else if (samplerate < samplerates.low || samplerate > samplerates.high)
644 return SR_ERR_SAMPLERATE;
646 if (samplerate > CLOCK_RATE) {
647 ctx->flag_reg |= FLAG_DEMUX;
648 ctx->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1;
650 ctx->flag_reg &= ~FLAG_DEMUX;
651 ctx->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1;
654 /* Calculate actual samplerate used and complain if it is different
655 * from the requested.
657 ctx->cur_samplerate = CLOCK_RATE / (ctx->cur_samplerate_divider + 1);
658 if (ctx->flag_reg & FLAG_DEMUX)
659 ctx->cur_samplerate *= 2;
660 if (ctx->cur_samplerate != samplerate)
661 sr_err("ols: can't match samplerate %" PRIu64 ", using %"
662 PRIu64, samplerate, ctx->cur_samplerate);
667 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
672 const uint64_t *tmp_u64;
676 if (sdi->status != SR_ST_ACTIVE)
680 case SR_HWCAP_SAMPLERATE:
681 ret = set_samplerate(sdi, *(const uint64_t *)value);
683 case SR_HWCAP_PROBECONFIG:
684 ret = configure_probes(ctx, (const GSList *)value);
686 case SR_HWCAP_LIMIT_SAMPLES:
688 if (*tmp_u64 < MIN_NUM_SAMPLES)
690 if (*tmp_u64 > ctx->max_samples)
691 sr_err("ols: sample limit exceeds hw max");
692 ctx->limit_samples = *tmp_u64;
693 sr_info("ols: sample limit %" PRIu64, ctx->limit_samples);
696 case SR_HWCAP_CAPTURE_RATIO:
697 ctx->capture_ratio = *(const uint64_t *)value;
698 if (ctx->capture_ratio < 0 || ctx->capture_ratio > 100) {
699 ctx->capture_ratio = 0;
705 if (GPOINTER_TO_INT(value)) {
706 sr_info("ols: enabling RLE");
707 ctx->flag_reg |= FLAG_RLE;
718 static int receive_data(int fd, int revents, void *cb_data)
720 struct sr_datafeed_packet packet;
721 struct sr_datafeed_logic logic;
722 struct sr_dev_inst *sdi;
725 int num_channels, offset, i, j;
728 /* Find this device's ctx struct by its fd. */
730 for (l = odi->instances; l; l = l->next) {
733 if (ctx->serial->fd == fd) {
739 /* Shouldn't happen. */
742 if (ctx->num_transfers++ == 0) {
744 * First time round, means the device started sending data,
745 * and will not stop until done. If it stops sending for
746 * longer than it takes to send a byte, that means it's
747 * finished. We'll double that to 30ms to be sure...
749 sr_source_remove(fd);
750 sr_source_add(fd, G_IO_IN, 30, receive_data, cb_data);
751 ctx->raw_sample_buf = g_try_malloc(ctx->limit_samples * 4);
752 if (!ctx->raw_sample_buf) {
753 sr_err("ols: %s: ctx->raw_sample_buf malloc failed",
757 /* fill with 1010... for debugging */
758 memset(ctx->raw_sample_buf, 0x82, ctx->limit_samples * 4);
762 for (i = 0x20; i > 0x02; i /= 2) {
763 if ((ctx->flag_reg & i) == 0)
767 if (revents == G_IO_IN) {
768 if (serial_read(fd, &byte, 1) != 1)
771 /* Ignore it if we've read enough. */
772 if (ctx->num_samples >= ctx->limit_samples)
775 ctx->sample[ctx->num_bytes++] = byte;
776 sr_dbg("ols: received byte 0x%.2x", byte);
777 if (ctx->num_bytes == num_channels) {
778 /* Got a full sample. */
779 sr_dbg("ols: received sample 0x%.*x",
780 ctx->num_bytes * 2, *(int *)ctx->sample);
781 if (ctx->flag_reg & FLAG_RLE) {
783 * In RLE mode -1 should never come in as a
784 * sample, because bit 31 is the "count" flag.
786 if (ctx->sample[ctx->num_bytes - 1] & 0x80) {
787 ctx->sample[ctx->num_bytes - 1] &= 0x7f;
789 * FIXME: This will only work on
790 * little-endian systems.
792 ctx->rle_count = *(int *)(ctx->sample);
793 sr_dbg("ols: RLE count = %d", ctx->rle_count);
798 ctx->num_samples += ctx->rle_count + 1;
799 if (ctx->num_samples > ctx->limit_samples) {
800 /* Save us from overrunning the buffer. */
801 ctx->rle_count -= ctx->num_samples - ctx->limit_samples;
802 ctx->num_samples = ctx->limit_samples;
805 if (num_channels < 4) {
807 * Some channel groups may have been turned
808 * off, to speed up transfer between the
809 * hardware and the PC. Expand that here before
810 * submitting it over the session bus --
811 * whatever is listening on the bus will be
812 * expecting a full 32-bit sample, based on
813 * the number of probes.
816 memset(ctx->tmp_sample, 0, 4);
817 for (i = 0; i < 4; i++) {
818 if (((ctx->flag_reg >> 2) & (1 << i)) == 0) {
820 * This channel group was
821 * enabled, copy from received
824 ctx->tmp_sample[i] = ctx->sample[j++];
827 memcpy(ctx->sample, ctx->tmp_sample, 4);
828 sr_dbg("ols: full sample 0x%.8x", *(int *)ctx->sample);
831 /* the OLS sends its sample buffer backwards.
832 * store it in reverse order here, so we can dump
833 * this on the session bus later.
835 offset = (ctx->limit_samples - ctx->num_samples) * 4;
836 for (i = 0; i <= ctx->rle_count; i++) {
837 memcpy(ctx->raw_sample_buf + offset + (i * 4),
840 memset(ctx->sample, 0, 4);
846 * This is the main loop telling us a timeout was reached, or
847 * we've acquired all the samples we asked for -- we're done.
848 * Send the (properly-ordered) buffer to the frontend.
850 if (ctx->trigger_at != -1) {
851 /* a trigger was set up, so we need to tell the frontend
854 if (ctx->trigger_at > 0) {
855 /* there are pre-trigger samples, send those first */
856 packet.type = SR_DF_LOGIC;
857 packet.payload = &logic;
858 logic.length = ctx->trigger_at * 4;
860 logic.data = ctx->raw_sample_buf +
861 (ctx->limit_samples - ctx->num_samples) * 4;
862 sr_session_send(cb_data, &packet);
865 /* send the trigger */
866 packet.type = SR_DF_TRIGGER;
867 sr_session_send(cb_data, &packet);
869 /* send post-trigger samples */
870 packet.type = SR_DF_LOGIC;
871 packet.payload = &logic;
872 logic.length = (ctx->num_samples * 4) - (ctx->trigger_at * 4);
874 logic.data = ctx->raw_sample_buf + ctx->trigger_at * 4 +
875 (ctx->limit_samples - ctx->num_samples) * 4;
876 sr_session_send(cb_data, &packet);
878 /* no trigger was used */
879 packet.type = SR_DF_LOGIC;
880 packet.payload = &logic;
881 logic.length = ctx->num_samples * 4;
883 logic.data = ctx->raw_sample_buf +
884 (ctx->limit_samples - ctx->num_samples) * 4;
885 sr_session_send(cb_data, &packet);
887 g_free(ctx->raw_sample_buf);
891 packet.type = SR_DF_END;
892 sr_session_send(cb_data, &packet);
898 static int hw_dev_acquisition_start(int dev_index, void *cb_data)
900 struct sr_datafeed_packet *packet;
901 struct sr_datafeed_header *header;
902 struct sr_datafeed_meta_logic meta;
903 struct sr_dev_inst *sdi;
905 uint32_t trigger_config[4];
907 uint16_t readcount, delaycount;
908 uint8_t changrp_mask;
912 if (!(sdi = sr_dev_inst_get(odi->instances, dev_index)))
917 if (sdi->status != SR_ST_ACTIVE)
921 * Enable/disable channel groups in the flag register according to the
922 * probe mask. Calculate this here, because num_channels is needed
923 * to limit readcount.
927 for (i = 0; i < 4; i++) {
928 if (ctx->probe_mask & (0xff << (i * 8))) {
929 changrp_mask |= (1 << i);
935 * Limit readcount to prevent reading past the end of the hardware
938 readcount = MIN(ctx->max_samples / num_channels, ctx->limit_samples) / 4;
940 memset(trigger_config, 0, 16);
941 trigger_config[ctx->num_stages - 1] |= 0x08;
942 if (ctx->trigger_mask[0]) {
943 delaycount = readcount * (1 - ctx->capture_ratio / 100.0);
944 ctx->trigger_at = (readcount - delaycount) * 4 - ctx->num_stages;
946 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_MASK_0,
947 reverse32(ctx->trigger_mask[0])) != SR_OK)
949 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_VALUE_0,
950 reverse32(ctx->trigger_value[0])) != SR_OK)
952 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
953 trigger_config[0]) != SR_OK)
956 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_MASK_1,
957 reverse32(ctx->trigger_mask[1])) != SR_OK)
959 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_VALUE_1,
960 reverse32(ctx->trigger_value[1])) != SR_OK)
962 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_CONFIG_1,
963 trigger_config[1]) != SR_OK)
966 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_MASK_2,
967 reverse32(ctx->trigger_mask[2])) != SR_OK)
969 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_VALUE_2,
970 reverse32(ctx->trigger_value[2])) != SR_OK)
972 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_CONFIG_2,
973 trigger_config[2]) != SR_OK)
976 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_MASK_3,
977 reverse32(ctx->trigger_mask[3])) != SR_OK)
979 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_VALUE_3,
980 reverse32(ctx->trigger_value[3])) != SR_OK)
982 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_CONFIG_3,
983 trigger_config[3]) != SR_OK)
986 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_MASK_0,
987 ctx->trigger_mask[0]) != SR_OK)
989 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_VALUE_0,
990 ctx->trigger_value[0]) != SR_OK)
992 if (send_longcommand(ctx->serial->fd, CMD_SET_TRIGGER_CONFIG_0,
993 0x00000008) != SR_OK)
995 delaycount = readcount;
998 sr_info("ols: setting samplerate to %" PRIu64 " Hz (divider %u, "
999 "demux %s)", ctx->cur_samplerate, ctx->cur_samplerate_divider,
1000 ctx->flag_reg & FLAG_DEMUX ? "on" : "off");
1001 if (send_longcommand(ctx->serial->fd, CMD_SET_DIVIDER,
1002 reverse32(ctx->cur_samplerate_divider)) != SR_OK)
1005 /* Send sample limit and pre/post-trigger capture ratio. */
1006 data = ((readcount - 1) & 0xffff) << 16;
1007 data |= (delaycount - 1) & 0xffff;
1008 if (send_longcommand(ctx->serial->fd, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK)
1011 /* The flag register wants them here, and 1 means "disable channel". */
1012 ctx->flag_reg |= ~(changrp_mask << 2) & 0x3c;
1013 ctx->flag_reg |= FLAG_FILTER;
1015 data = (ctx->flag_reg << 24) | ((ctx->flag_reg << 8) & 0xff0000);
1016 if (send_longcommand(ctx->serial->fd, CMD_SET_FLAGS, data) != SR_OK)
1019 /* Start acquisition on the device. */
1020 if (send_shortcommand(ctx->serial->fd, CMD_RUN) != SR_OK)
1023 sr_source_add(ctx->serial->fd, G_IO_IN, -1, receive_data,
1026 if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
1027 sr_err("ols: %s: packet malloc failed", __func__);
1028 return SR_ERR_MALLOC;
1031 if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
1032 sr_err("ols: %s: header malloc failed", __func__);
1034 return SR_ERR_MALLOC;
1037 /* Send header packet to the session bus. */
1038 packet->type = SR_DF_HEADER;
1039 packet->payload = (unsigned char *)header;
1040 header->feed_version = 1;
1041 gettimeofday(&header->starttime, NULL);
1042 sr_session_send(cb_data, packet);
1044 /* Send metadata about the SR_DF_LOGIC packets to come. */
1045 packet->type = SR_DF_META_LOGIC;
1046 packet->payload = &meta;
1047 meta.samplerate = ctx->cur_samplerate;
1048 meta.num_probes = NUM_PROBES;
1049 sr_session_send(cb_data, packet);
1057 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
1058 static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
1060 struct sr_datafeed_packet packet;
1062 /* Avoid compiler warnings. */
1065 packet.type = SR_DF_END;
1066 sr_session_send(cb_data, &packet);
1071 SR_PRIV struct sr_dev_driver ols_driver_info = {
1073 .longname = "Openbench Logic Sniffer",
1076 .cleanup = hw_cleanup,
1078 .dev_open = hw_dev_open,
1079 .dev_close = hw_dev_close,
1080 .info_get = hw_info_get,
1081 .dev_status_get = hw_dev_status_get,
1082 .dev_config_set = hw_dev_config_set,
1083 .dev_acquisition_start = hw_dev_acquisition_start,
1084 .dev_acquisition_stop = hw_dev_acquisition_stop,