2 * This file is part of the libsigrok project.
4 * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
5 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 * <em>Motech LPS-30x series</em> power supply driver
33 /* Forward declarations */
34 SR_PRIV struct sr_dev_driver motech_lps_301_driver_info;
35 SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen);
36 SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_list args);
37 SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char* fmt, ...);
38 SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...);
39 SR_PRIV int lps_query_status(struct sr_dev_inst* sdi);
41 /* Serial communication parameters */
42 #define SERIALCOMM "2400/8n1/dtr=1/rts=1/flow=0"
44 #define VENDOR_MOTECH "Motech"
46 /** Driver capabilities generic. */
47 static const uint32_t drvopts[] = {
52 /** Driver scanning options. */
53 static const uint32_t scanopts[] = {
58 /** Hardware capabilities generic. */
59 static const uint32_t devopts[] = {
62 /* Aquisition modes. */
64 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
65 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
66 /* Device configuration */
67 SR_CONF_OUTPUT_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
70 /** Hardware capabilities channel 1, 2. */
71 static const uint32_t devopts_ch12[] = {
72 SR_CONF_OUTPUT_VOLTAGE | SR_CONF_GET,
73 SR_CONF_OUTPUT_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
74 SR_CONF_OUTPUT_CURRENT | SR_CONF_GET,
75 SR_CONF_OUTPUT_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
76 SR_CONF_OUTPUT_ENABLED | SR_CONF_GET | SR_CONF_SET,
79 /** Hardware capabilities channel 3. (LPS-304/305 only). */
80 static const uint32_t devopts_ch3[] = {
81 SR_CONF_OUTPUT_VOLTAGE | SR_CONF_GET,
82 SR_CONF_OUTPUT_ENABLED | SR_CONF_GET | SR_CONF_SET,
85 static const char *channel_modes[] = {
91 static struct lps_modelspec models[] = {
92 { LPS_UNKNOWN, "Dummy", 0,
97 { LPS_301, "LPS-301", 1,
100 { { 0, 32, 0.01 }, { 0.005, 2, 0.001 } },
103 { LPS_302, "LPS-302", 1,
106 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
109 { LPS_303, "LPS-303", 1,
112 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
115 { LPS_304, "LPS-304", 3,
118 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
120 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
122 { { 5, 5, 0.0 }, { 0.005, 3, 0.001 } },
125 { LPS_305, "LPS-305", 3,
128 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
130 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
132 { { 3.3, 5, 1.7 }, { 0.005, 3, 0.001 } },
137 static int init_lps301(struct sr_context *sr_ctx)
139 return std_init(sr_ctx, &motech_lps_301_driver_info, LOG_PREFIX);
142 /** Send command to device with va_list.
144 SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char* fmt, va_list args)
147 char auxfmt[LINELEN_MAX];
148 char buf[LINELEN_MAX];
150 snprintf(auxfmt, sizeof(auxfmt), "%s\r\n", fmt);
151 vsnprintf(buf, sizeof(buf), auxfmt, args);
153 sr_spew("lps_send_va: \"%s\"", buf);
155 retc = serial_write_blocking(serial, buf, strlen(buf), 0);
163 /** Send command to device.
165 SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char* fmt, ...)
171 retc = lps_send_va(serial, fmt, args);
177 /** Send command and consume simple OK reply. */
178 SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char* fmt, ...)
182 char buf[LINELEN_MAX];
188 retc = lps_send_va(serial, fmt, args);
197 buflen = sizeof(buf);
198 retc = lps_read_reply(serial, &bufptr, &buflen);
199 if ((retc == SR_OK) && (buflen == 0))
205 /** Send command and read reply string.
206 * \param reply Pointer to buffer of size LINELEN_MAX. Will be NUL-terminated.
208 SR_PRIV int lps_cmd_reply(char* reply, struct sr_serial_dev_inst *serial, const char* fmt, ...)
212 char buf[LINELEN_MAX];
220 retc = lps_send_va(serial, fmt, args);
229 buflen = sizeof(buf);
230 retc = lps_read_reply(serial, &bufptr, &buflen);
231 if ((retc == SR_OK) && (buflen > 0)) {
239 /** Process integer value returned by STATUS command. */
240 SR_PRIV int lps_process_status(struct sr_dev_inst* sdi, int stat)
242 struct dev_context* devc;
245 devc = (struct dev_context*)sdi->priv;
247 sr_spew("Status: %d", stat);
248 devc->channel_status[0].cc_mode = (stat & 0x01) != 0;
249 sr_spew("Channel 1 %s mode", devc->channel_status[0].cc_mode?"CC":"CV");
250 if (devc->model->num_channels > 1) {
251 devc->channel_status[1].cc_mode = (stat & 0x02) != 0;
252 sr_spew("Channel 2 %s mode", devc->channel_status[1].cc_mode?"CC":"CV");
254 tracking_mode = (stat & 0x0c) >> 2;
255 switch (tracking_mode) {
256 case 0: devc->tracking_mode = 0;
258 case 2: devc->tracking_mode = 1;
260 case 3: devc->tracking_mode = 2;
263 sr_err("Illegal channel tracking mode %d!", tracking_mode);
264 devc->tracking_mode = 0;
268 sr_spew("Channel tracking: %d", devc->tracking_mode);
270 devc->channel_status[0].output_enabled = devc->channel_status[1].output_enabled = stat&0x040?TRUE:FALSE;
271 sr_spew("Channel 1%s output: %s", devc->model->num_channels > 1?"+2":"", devc->channel_status[0].output_enabled?"ON":"OFF");
272 if (devc->model->num_channels > 2) {
273 devc->channel_status[2].output_enabled = stat&0x010?TRUE:FALSE;
274 devc->channel_status[2].output_voltage_last = stat&0x020?3.3:5;
275 sr_spew("Channel 3 output: %s, U=%02f V, overload=%d",
276 devc->channel_status[2].output_enabled?"ON":"OFF",
277 devc->channel_status[2].output_voltage_last,
280 sr_spew("Fan=%d, beep=%d, CC output compensated=%d", stat&0x0100?1:0, stat&0x0200?1:0, stat&0x0400?1:0);
285 /** Send STATUS commend and process status string. */
286 SR_PRIV int lps_query_status(struct sr_dev_inst* sdi)
288 char buf[LINELEN_MAX];
290 struct dev_context* devc;
292 devc = (struct dev_context*)sdi->priv;
294 devc->req_sent_at = g_get_real_time();
296 if (lps_cmd_reply(buf, sdi->conn, "STATUS") < 0) {
297 sr_err("%s: Failed to read status: %d %s", __func__, errno, strerror(errno));
301 if (sr_atoi(buf, &stat) != SR_OK)
304 return lps_process_status(sdi, stat);
307 static gint64 calc_timeout_ms(gint64 start_us)
309 gint64 result = REQ_TIMEOUT_MS - ((g_get_real_time() - start_us) / 1000);
317 /** Read message into buf until "OK" received.
318 * \retval SR_OK Msg received; buf and buflen contain result, if any except OK.
319 * \retval SR_ERR Error, including timeout.
321 SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen)
324 char buf2[LINELEN_MAX];
327 gint64 timeout_start;
331 /* Read one line. It is either a data message or "OK". */
332 timeout_start = g_get_real_time();
334 /* Up to 5 tries because serial_readline() will consume only one CR or LF per
335 * call, but device sends up to 4 in a row. */
336 for (retries = 0; retries < 5; retries++) {
338 if (serial_readline(serial, buf, buflen, calc_timeout_ms(timeout_start)) != SR_OK)
340 if (!strcmp(*buf, "OK")) { /* We got an OK! */
345 if (*buflen > 0) /* We got a msg! */
349 /* A data msg is in buf (possibly ERROR), need to consume "OK". */
352 for (retries = 0; retries < 5; retries++) {
353 buf2len = sizeof(buf2);
354 if (serial_readline(serial, &buf2ptr, &buf2len, calc_timeout_ms(timeout_start)) != SR_OK)
357 if (!strcmp(buf2ptr, "OK")) { /* We got an OK! */
358 if (!strcmp(*buf, "ERROR")) { /* OK came after msg ERROR! */
359 sr_spew("ERROR found!");
368 return SR_ERR; /* Timeout! */
371 /** Scan for LPS-300 series device.
373 static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *options)
375 struct sr_dev_inst *sdi;
376 struct drv_context *drvc;
377 struct dev_context *devc;
378 struct sr_serial_dev_inst *serial;
379 struct sr_channel *ch;
380 struct sr_channel_group *cg;
382 const char *conn, *serialcomm;
384 gchar buf[LINELEN_MAX];
390 conn = serialcomm = NULL;
394 drvc->instances = NULL;
396 sr_spew("scan() called!");
398 /* Process and check options. */
399 if (sr_serial_extract_options(options, &conn, &serialcomm) != SR_OK)
402 serialcomm = SERIALCOMM;
404 /* Init serial port. */
405 if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
408 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
411 /* Query and verify model string. */
412 serial_flush(serial);
413 if (lps_cmd_reply(buf, serial, "MODEL") != SR_OK)
416 /* Check model string. */
417 if (strncmp(buf, "LPS-", 4)) {
418 sr_spew("Unknown model code \"%s\"!", buf);
422 /* Bug in device FW 1.17, model number is empty, so this can't work with this FW! */
423 if (modelid == LPS_UNKNOWN) {
425 for (cnt = LPS_301; cnt <= LPS_305; cnt++) {
426 if (!strcmp(buf, models[cnt].modelstr)) {
431 if (modelid == LPS_UNKNOWN) {
432 sr_err("Unable to detect model from model string '%s'!", buf);
439 if (lps_cmd_reply(buf, serial, "VERSION") == SR_OK) {
440 if (strncmp(buf, "Ver-", 4)) {
441 sr_spew("Version string %s not recognized.", buf);
449 else /* Bug in device FW 1.17: Quering version string fails while output is active.
450 Therefore just print an error message, but do not exit with error. */
451 sr_err("Failed to query for hardware version: %d %s", errno, strerror(errno));
453 sdi = sr_dev_inst_new();
454 sdi->status = SR_ST_INACTIVE;
455 sdi->vendor = g_strdup(VENDOR_MOTECH);
456 sdi->model = g_strdup(models[modelid].modelstr);
457 sdi->version = g_strdup(verstr);
459 sdi->inst_type = SR_INST_SERIAL;
462 devc = g_malloc0(sizeof(struct dev_context));
463 devc->model = &models[modelid];
464 devc->limit_samples = 0;
465 devc->limit_msec = 0;
466 devc->num_samples = 0;
467 devc->elapsed_msec = g_timer_new();
471 /* Setup channels and channel groups. */
472 for (cnt = 0; cnt < models[modelid].num_channels; cnt++) {
473 snprintf(channel, sizeof(channel), "CH%d", cnt + 1);
474 ch = sr_channel_new(cnt, SR_CHANNEL_ANALOG, TRUE, channel);
475 sdi->channels = g_slist_append(sdi->channels, ch);
477 devc->channel_status[cnt].info = g_slist_append(NULL, ch);
479 cg = g_malloc(sizeof(struct sr_channel_group));
480 snprintf(channel, sizeof(channel), "CG%d", cnt+1);
481 cg->name = g_strdup(channel);
483 cg->channels = g_slist_append(NULL, ch);
485 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
488 drvc->instances = g_slist_append(drvc->instances, sdi);
489 devices = g_slist_append(devices, sdi);
492 if (lps_query_status(sdi) != SR_OK)
495 serial_close(serial);
497 sr_serial_dev_inst_free(serial);
502 sr_info("%s: Error!", __func__);
505 serial_close(serial);
506 sr_serial_dev_inst_free(serial);
511 sr_dev_inst_free(sdi);
516 /** Scan for LPS-301 device. */
517 static GSList *scan_lps301(GSList *options)
519 return do_scan(LPS_301, &motech_lps_301_driver_info, options);
522 static GSList *doDevList(struct sr_dev_driver *drv)
524 return ((struct drv_context *)(drv->priv))->instances;
527 static GSList *dev_list_lps301(void)
529 return doDevList(&motech_lps_301_driver_info);
532 static void dev_clear_private(struct dev_context* devc)
536 /* Free channel_status.info (list only, data owned by sdi). */
537 for (ch_idx = 0; ch_idx < devc->model->num_channels; ch_idx++)
538 g_slist_free(devc->channel_status[ch_idx].info);
540 g_timer_destroy(devc->elapsed_msec);
543 static int dev_clear_lps301(void)
545 return std_dev_clear(&motech_lps_301_driver_info, (std_dev_clear_callback)dev_clear_private);
548 static int cleanup(void)
550 return dev_clear_lps301();
553 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
554 const struct sr_channel_group *cg)
556 struct dev_context *devc;
557 struct sr_channel *ch;
566 /* No channel group: global options. */
568 case SR_CONF_LIMIT_SAMPLES:
569 *data = g_variant_new_uint64(devc->limit_samples);
571 case SR_CONF_LIMIT_MSEC:
572 *data = g_variant_new_uint64(devc->limit_msec);
574 case SR_CONF_OUTPUT_CHANNEL_CONFIG:
575 *data = g_variant_new_string(channel_modes[devc->tracking_mode]);
581 /* We only ever have one channel per channel group in this driver. */
582 ch = cg->channels->data;
585 case SR_CONF_OUTPUT_VOLTAGE:
586 *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_last);
588 case SR_CONF_OUTPUT_VOLTAGE_TARGET:
589 *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_max);
591 case SR_CONF_OUTPUT_CURRENT:
592 *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_last);
594 case SR_CONF_OUTPUT_CURRENT_LIMIT:
595 *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_max);
597 case SR_CONF_OUTPUT_ENABLED:
598 *data = g_variant_new_boolean(devc->channel_status[ch_idx].output_enabled);
608 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
609 const struct sr_channel_group *cg)
611 struct dev_context *devc;
612 struct sr_channel *ch;
620 if (sdi->status != SR_ST_ACTIVE)
621 return SR_ERR_DEV_CLOSED;
625 /* Cannot change settings while acquisition active, would cause a mess with commands.
626 * Changing this would be possible, but tricky. */
627 if (devc->acq_running)
631 /* No channel group: global options. */
633 case SR_CONF_LIMIT_MSEC:
634 if (g_variant_get_uint64(data) == 0) {
635 sr_err("LIMIT_MSEC can't be 0.");
638 devc->limit_msec = g_variant_get_uint64(data);
639 sr_dbg("Setting time limit to %" PRIu64 "ms.",
642 case SR_CONF_LIMIT_SAMPLES:
643 devc->limit_samples = g_variant_get_uint64(data);
644 sr_dbg("Setting sample limit to %" PRIu64 ".",
645 devc->limit_samples);
647 case SR_CONF_OUTPUT_CHANNEL_CONFIG:
648 sval = g_variant_get_string(data, NULL);
650 for (idx = 0; idx < (int)ARRAY_SIZE(channel_modes); idx++)
652 if (!strcmp(sval, channel_modes[idx])) {
654 if (devc->tracking_mode == idx)
655 break; /* Nothing to do! */
656 devc->tracking_mode = idx;
657 if (devc->model->modelid >= LPS_304) /* No use to set anything in the smaller models. */
658 return lps_cmd_ok(sdi->conn, "TRACK%1d", devc->tracking_mode);
660 if (devc->model->modelid <= LPS_303) /* Only first setting possible for smaller models. */
671 /* Channel group specified: per-channel options. */
672 /* We only ever have one channel per channel group in this driver. */
673 ch = cg->channels->data;
677 case SR_CONF_OUTPUT_VOLTAGE_TARGET:
678 dval = g_variant_get_double(data);
679 if (dval < 0 || dval > devc->model->channels[ch_idx].voltage[1])
682 if (devc->model->modelid < LPS_304)
685 if (fabs(dval - 5.000) <= 0.001)
687 else if ((devc->model->modelid >= LPS_305) && (fabs(dval - 3.300) <= 0.001))
689 else return SR_ERR_ARG;
692 devc->channel_status[ch_idx].output_voltage_max = dval;
694 return lps_cmd_ok(sdi->conn, "VDD%1.0f", trunc(dval));
696 return lps_cmd_ok(sdi->conn, "VSET%d %05.3f", ch_idx+1, dval);
698 case SR_CONF_OUTPUT_CURRENT_LIMIT:
699 dval = g_variant_get_double(data);
700 if (dval < 0 || dval > devc->model->channels[ch_idx].current[1])
702 if (ch_idx == 2) /* No current setting for CH3. */
704 devc->channel_status[ch_idx].output_current_max = dval;
705 return lps_cmd_ok(sdi->conn, "ISET%d %05.4f", ch_idx+1, dval);
707 case SR_CONF_OUTPUT_ENABLED:
708 bval = g_variant_get_boolean(data);
709 if (bval == devc->channel_status[ch_idx].output_enabled) /* Nothing to do. */
711 devc->channel_status[ch_idx].output_enabled = bval;
712 if (ch_idx != 2) { /* Channels 1,2 can be set only together. */
713 devc->channel_status[ch_idx^1].output_enabled = bval;
714 return lps_cmd_ok(sdi->conn, "OUT%1d", (int)bval);
715 } else { /* Channel 3: No command to disable output, set voltage to 0 instead. */
717 return lps_cmd_ok(sdi->conn, "VDD%1.0f", devc->channel_status[ch_idx].output_voltage_max);
719 return lps_cmd_ok(sdi->conn, "VDD0");
730 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
731 const struct sr_channel_group *cg)
733 struct dev_context *devc;
734 struct sr_channel *ch;
741 /* Driver options, no device instance necessary. */
743 case SR_CONF_SCAN_OPTIONS:
744 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
745 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
747 case SR_CONF_DEVICE_OPTIONS:
750 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
751 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
760 /* Device options, independent from channel groups. */
763 case SR_CONF_DEVICE_OPTIONS:
764 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
765 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
767 case SR_CONF_OUTPUT_CHANNEL_CONFIG:
768 if (devc->model->modelid <= LPS_303) {
769 /* The 1-channel models. */
770 *data = g_variant_new_strv(channel_modes, 1);
772 /* The other models support all modes. */
773 *data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
782 /* Device options, depending on channel groups. */
783 ch = cg->channels->data;
786 case SR_CONF_DEVICE_OPTIONS:
787 if ((ch_idx == 0) || (ch_idx == 1)) /* CH1, CH2 */
788 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
789 devopts_ch12, ARRAY_SIZE(devopts_ch12), sizeof(uint32_t));
790 else /* Must be CH3 */
791 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
792 devopts_ch3, ARRAY_SIZE(devopts_ch3), sizeof(uint32_t));
794 case SR_CONF_OUTPUT_VOLTAGE_TARGET:
795 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
796 /* Min, max, step. */
797 for (i = 0; i < 3; i++) {
798 gvar = g_variant_new_double(devc->model->channels[ch_idx].voltage[i]);
799 g_variant_builder_add_value(&gvb, gvar);
801 *data = g_variant_builder_end(&gvb);
803 case SR_CONF_OUTPUT_CURRENT_LIMIT:
804 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
805 /* Min, max, step. */
806 for (i = 0; i < 3; i++) {
807 gvar = g_variant_new_double(devc->model->channels[ch_idx].current[i]);
808 g_variant_builder_add_value(&gvb, gvar);
810 *data = g_variant_builder_end(&gvb);
819 static int dev_acquisition_start(const struct sr_dev_inst *sdi,
822 struct dev_context *devc;
823 struct sr_serial_dev_inst *serial;
825 if (sdi->status != SR_ST_ACTIVE)
826 return SR_ERR_DEV_CLOSED;
830 devc->acq_running = TRUE;
833 serial_source_add(sdi->session, serial, G_IO_IN, 50,
834 motech_lps_30x_receive_data, (void *)sdi);
835 std_session_send_df_header(cb_data, LOG_PREFIX);
837 /* Start timer, if required. */
838 if (devc->limit_msec)
839 g_timer_start(devc->elapsed_msec);
841 devc->acq_req = AQ_NONE;
842 /* Do not start polling device here, the read function will do it in 50 ms. */
847 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
849 struct dev_context *devc;
851 /* Stop timer, if required. */
852 if (sdi && (devc = sdi->priv) && devc->limit_msec)
853 g_timer_stop(devc->elapsed_msec);
855 return std_serial_dev_acquisition_stop(sdi, cb_data, std_serial_dev_close,
856 sdi->conn, LOG_PREFIX);
859 SR_PRIV struct sr_dev_driver motech_lps_301_driver_info = {
860 .name = "motech-lps-301",
861 .longname = "Motech LPS-301",
866 .dev_list = dev_list_lps301,
867 .dev_clear = dev_clear_lps301,
868 .config_get = config_get,
869 .config_set = config_set,
870 .config_list = config_list,
871 .dev_open = std_serial_dev_open,
872 .dev_close = std_serial_dev_close,
873 .dev_acquisition_start = dev_acquisition_start,
874 .dev_acquisition_stop = dev_acquisition_stop,