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std_serial_dev_acquisition_stop(): Remove serial parameter
[libsigrok.git] / src / hardware / motech-lps-30x / api.c
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1/*
2 * This file is part of the libsigrok project.
3 *
4 * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
5 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
6 *
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.
11 *
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.
16 *
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/>.
19 */
20
21/** @file
22 * <em>Motech LPS-30x series</em> power supply driver
23 * @internal
24 */
25
26#include <config.h>
27#include <ctype.h>
28#include <math.h>
29#include <string.h>
30#include "protocol.h"
31SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen);
32SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char *fmt, va_list args);
33SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char *fmt, ...);
34SR_PRIV int lps_cmd_reply(char *reply, struct sr_serial_dev_inst *serial, const char *fmt, ...);
35SR_PRIV int lps_query_status(struct sr_dev_inst *sdi);
36
37/* Serial communication parameters */
38#define SERIALCOMM "2400/8n1/dtr=1/rts=1/flow=0"
39
40#define VENDOR_MOTECH "Motech"
41
42/** Driver capabilities generic. */
43static const uint32_t drvopts[] = {
44 /* Device class */
45 SR_CONF_POWER_SUPPLY,
46};
47
48/** Driver scanning options. */
49static const uint32_t scanopts[] = {
50 SR_CONF_CONN,
51 SR_CONF_SERIALCOMM,
52};
53
54/** Hardware capabilities generic. */
55static const uint32_t devopts[] = {
56 /* Device class */
57 SR_CONF_POWER_SUPPLY,
58 /* Acquisition modes. */
59 SR_CONF_CONTINUOUS,
60 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
61 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
62 /* Device configuration */
63 SR_CONF_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
64};
65
66/** Hardware capabilities channel 1, 2. */
67static const uint32_t devopts_ch12[] = {
68 SR_CONF_VOLTAGE | SR_CONF_GET,
69 SR_CONF_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
70 SR_CONF_CURRENT | SR_CONF_GET,
71 SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
72 SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
73};
74
75/** Hardware capabilities channel 3. (LPS-304/305 only). */
76static const uint32_t devopts_ch3[] = {
77 SR_CONF_VOLTAGE | SR_CONF_GET,
78 SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
79};
80
81static const char *channel_modes[] = {
82 "Independent",
83 "Track1",
84 "Track2",
85};
86
87static const struct lps_modelspec models[] = {
88 { LPS_UNKNOWN, "Dummy", 0,
89 {
90
91 }
92 },
93 { LPS_301, "LPS-301", 1,
94 {
95 /* Channel 1 */
96 { { 0, 32, 0.01 }, { 0.005, 2, 0.001 } },
97 },
98 },
99 { LPS_302, "LPS-302", 1,
100 {
101 /* Channel 1 */
102 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
103 },
104 },
105 { LPS_303, "LPS-303", 1,
106 {
107 /* Channel 1 */
108 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
109 },
110 },
111 { LPS_304, "LPS-304", 3,
112 {
113 /* Channel 1 */
114 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
115 /* Channel 2 */
116 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
117 /* Channel 3 */
118 { { 5, 5, 0.0 }, { 0.005, 3, 0.001 } },
119 },
120 },
121 { LPS_305, "LPS-305", 3,
122 {
123 /* Channel 1 */
124 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
125 /* Channel 2 */
126 { { 0, 32, 0.01 }, { 0.005, 3, 0.001 } },
127 /* Channel 3 */
128 { { 3.3, 5, 1.7 }, { 0.005, 3, 0.001 } },
129 },
130 },
131};
132
133/** Send command to device with va_list.
134 */
135SR_PRIV int lps_send_va(struct sr_serial_dev_inst *serial, const char *fmt, va_list args)
136{
137 int retc;
138 char auxfmt[LINELEN_MAX];
139 char buf[LINELEN_MAX];
140
141 snprintf(auxfmt, sizeof(auxfmt), "%s\r\n", fmt);
142 vsnprintf(buf, sizeof(buf), auxfmt, args);
143
144 sr_spew("lps_send_va: \"%s\"", buf);
145
146 retc = serial_write_blocking(serial, buf, strlen(buf),
147 serial_timeout(serial, strlen(buf)));
148
149 if (retc < 0)
150 return SR_ERR;
151
152 return SR_OK;
153}
154
155/** Send command to device.
156 */
157SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char *fmt, ...)
158{
159 int retc;
160 va_list args;
161
162 va_start(args, fmt);
163 retc = lps_send_va(serial, fmt, args);
164 va_end(args);
165
166 return retc;
167}
168
169/** Send command and consume simple OK reply. */
170SR_PRIV int lps_cmd_ok(struct sr_serial_dev_inst *serial, const char *fmt, ...)
171{
172 int retc;
173 va_list args;
174 char buf[LINELEN_MAX];
175 char *bufptr;
176 int buflen;
177
178 /* Send command */
179 va_start(args, fmt);
180 retc = lps_send_va(serial, fmt, args);
181 va_end(args);
182
183 if (retc != SR_OK)
184 return SR_ERR;
185
186 /* Read reply */
187 buf[0] = '\0';
188 bufptr = buf;
189 buflen = sizeof(buf);
190 retc = lps_read_reply(serial, &bufptr, &buflen);
191 if ((retc == SR_OK) && (buflen == 0))
192 return SR_OK;
193
194 return SR_ERR;
195}
196
197/** Send command and read reply string.
198 * @param reply Pointer to buffer of size LINELEN_MAX. Will be NUL-terminated.
199 */
200SR_PRIV int lps_cmd_reply(char *reply, struct sr_serial_dev_inst *serial, const char *fmt, ...)
201{
202 int retc;
203 va_list args;
204 char buf[LINELEN_MAX];
205 char *bufptr;
206 int buflen;
207
208 reply[0] = '\0';
209
210 /* Send command */
211 va_start(args, fmt);
212 retc = lps_send_va(serial, fmt, args);
213 va_end(args);
214
215 if (retc != SR_OK)
216 return SR_ERR;
217
218 /* Read reply */
219 buf[0] = '\0';
220 bufptr = buf;
221 buflen = sizeof(buf);
222 retc = lps_read_reply(serial, &bufptr, &buflen);
223 if ((retc == SR_OK) && (buflen > 0)) {
224 strcpy(reply, buf);
225 return SR_OK;
226 }
227
228 return SR_ERR;
229}
230
231/** Process integer value returned by STATUS command. */
232SR_PRIV int lps_process_status(struct sr_dev_inst *sdi, int stat)
233{
234 struct dev_context *devc;
235 int tracking_mode;
236
237 devc = sdi->priv;
238
239 sr_spew("Status: %d", stat);
240 devc->channel_status[0].cc_mode = (stat & 0x01) != 0;
241 sr_spew("Channel 1 %s mode", devc->channel_status[0].cc_mode?"CC":"CV");
242 if (devc->model->num_channels > 1) {
243 devc->channel_status[1].cc_mode = (stat & 0x02) != 0;
244 sr_spew("Channel 2 %s mode", devc->channel_status[1].cc_mode?"CC":"CV");
245
246 tracking_mode = (stat & 0x0c) >> 2;
247 switch (tracking_mode) {
248 case 0: devc->tracking_mode = 0;
249 break;
250 case 2: devc->tracking_mode = 1;
251 break;
252 case 3: devc->tracking_mode = 2;
253 break;
254 default:
255 sr_err("Illegal channel tracking mode %d!", tracking_mode);
256 devc->tracking_mode = 0;
257 break;
258 }
259
260 sr_spew("Channel tracking: %d", devc->tracking_mode);
261 }
262 devc->channel_status[0].output_enabled = devc->channel_status[1].output_enabled = stat&0x040?TRUE:FALSE;
263 sr_spew("Channel 1%s output: %s", devc->model->num_channels > 1?"+2":"", devc->channel_status[0].output_enabled?"ON":"OFF");
264 if (devc->model->num_channels > 2) {
265 devc->channel_status[2].output_enabled = stat&0x010?TRUE:FALSE;
266 devc->channel_status[2].output_voltage_last = stat&0x020?3.3:5;
267 sr_spew("Channel 3 output: %s, U=%02f V, overload=%d",
268 devc->channel_status[2].output_enabled?"ON":"OFF",
269 devc->channel_status[2].output_voltage_last,
270 stat&0x080?1:0);
271 }
272 sr_spew("Fan=%d, beep=%d, CC output compensated=%d", stat&0x0100?1:0, stat&0x0200?1:0, stat&0x0400?1:0);
273
274 return SR_OK;
275}
276
277/** Send STATUS commend and process status string. */
278SR_PRIV int lps_query_status(struct sr_dev_inst *sdi)
279{
280 char buf[LINELEN_MAX];
281 int stat, ret;
282 struct dev_context *devc;
283
284 devc = sdi->priv;
285
286 devc->req_sent_at = g_get_real_time();
287
288 if ((ret = lps_cmd_reply(buf, sdi->conn, "STATUS")) < 0) {
289 sr_err("%s: Failed to read status: %s.", __func__,
290 sr_strerror(ret));
291 return SR_ERR;
292 }
293
294 if (sr_atoi(buf, &stat) != SR_OK)
295 return SR_ERR;
296
297 return lps_process_status(sdi, stat);
298}
299
300static gint64 calc_timeout_ms(gint64 start_us)
301{
302 gint64 result = REQ_TIMEOUT_MS - ((g_get_real_time() - start_us) / 1000);
303
304 if (result < 0)
305 return 0;
306
307 return result;
308}
309
310/** Read message into buf until "OK" received.
311 * @retval SR_OK Msg received; buf and buflen contain result, if any except OK.
312 * @retval SR_ERR Error, including timeout.
313*/
314SR_PRIV int lps_read_reply(struct sr_serial_dev_inst *serial, char **buf, int *buflen)
315{
316 int retries;
317 char buf2[LINELEN_MAX];
318 char *buf2ptr;
319 int buf2len;
320 gint64 timeout_start;
321
322 *buf[0] = '\0';
323
324 /* Read one line. It is either a data message or "OK". */
325 timeout_start = g_get_real_time();
326 buf2len = *buflen;
327 /* Up to 5 tries because serial_readline() will consume only one CR or LF per
328 * call, but device sends up to 4 in a row. */
329 for (retries = 0; retries < 5; retries++) {
330 *buflen = buf2len;
331 if (serial_readline(serial, buf, buflen, calc_timeout_ms(timeout_start)) != SR_OK)
332 return SR_ERR;
333 if (!strcmp(*buf, "OK")) { /* We got an OK! */
334 *buf[0] = '\0';
335 *buflen = 0;
336 return SR_OK;
337 }
338 if (*buflen > 0) /* We got a msg! */
339 break;
340 }
341
342 /* A data msg is in buf (possibly ERROR), need to consume "OK". */
343 buf2[0] = '\0';
344 buf2ptr = buf2;
345 for (retries = 0; retries < 5; retries++) {
346 buf2len = sizeof(buf2);
347 if (serial_readline(serial, &buf2ptr, &buf2len, calc_timeout_ms(timeout_start)) != SR_OK)
348 return SR_ERR;
349
350 if (!strcmp(buf2ptr, "OK")) { /* We got an OK! */
351 if (!strcmp(*buf, "ERROR")) { /* OK came after msg ERROR! */
352 sr_spew("ERROR found!");
353 *buf[0] = '\0';
354 *buflen = 0;
355 return SR_ERR;
356 }
357 return SR_OK;
358 }
359 }
360
361 return SR_ERR; /* Timeout! */
362}
363
364/** Scan for LPS-300 series device.
365 */
366static GSList *do_scan(lps_modelid modelid, struct sr_dev_driver *drv, GSList *options)
367{
368 struct sr_dev_inst *sdi;
369 struct dev_context *devc;
370 struct sr_serial_dev_inst *serial;
371 struct sr_channel *ch;
372 struct sr_channel_group *cg;
373 const char *conn, *serialcomm;
374 int cnt, ret;
375 gchar buf[LINELEN_MAX];
376 gchar channel[10];
377 char *verstr;
378
379 sdi = NULL;
380 devc = NULL;
381 conn = serialcomm = NULL;
382
383 sr_spew("scan() called!");
384
385 /* Process and check options. */
386 if (sr_serial_extract_options(options, &conn, &serialcomm) != SR_OK)
387 return NULL;
388 if (!serialcomm)
389 serialcomm = SERIALCOMM;
390
391 /* Init serial port. */
392 serial = sr_serial_dev_inst_new(conn, serialcomm);
393
394 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
395 goto exit_err;
396
397 /* Query and verify model string. */
398 serial_flush(serial);
399 if (lps_cmd_reply(buf, serial, "MODEL") != SR_OK)
400 return NULL;
401
402 /* Check model string. */
403 if (strncmp(buf, "LPS-", 4)) {
404 sr_spew("Unknown model code \"%s\"!", buf);
405 return NULL;
406 }
407
408 /* Bug in device FW 1.17, model number is empty, so this can't work with this FW! */
409 if (modelid == LPS_UNKNOWN) {
410 g_strstrip(buf);
411 for (cnt = LPS_301; cnt <= LPS_305; cnt++) {
412 if (!strcmp(buf, models[cnt].modelstr)) {
413 modelid = cnt;
414 break;
415 }
416 }
417 if (modelid == LPS_UNKNOWN) {
418 sr_err("Unable to detect model from model string '%s'!", buf);
419 return NULL;
420 }
421 }
422
423 /* Query version */
424 verstr = NULL;
425 if ((ret = lps_cmd_reply(buf, serial, "VERSION")) == SR_OK) {
426 if (strncmp(buf, "Ver-", 4)) {
427 sr_spew("Version string %s not recognized.", buf);
428 goto exit_err;
429 }
430
431 g_strstrip(buf);
432 verstr = buf + 4;
433 }
434 else /* Bug in device FW 1.17: Querying version string fails while output is active.
435 Therefore just print an error message, but do not exit with error. */
436 sr_err("Failed to query for hardware version: %s.",
437 sr_strerror(ret));
438
439 sdi = g_malloc0(sizeof(struct sr_dev_inst));
440 sdi->status = SR_ST_INACTIVE;
441 sdi->vendor = g_strdup(VENDOR_MOTECH);
442 sdi->model = g_strdup(models[modelid].modelstr);
443 sdi->version = g_strdup(verstr);
444 sdi->inst_type = SR_INST_SERIAL;
445 sdi->conn = serial;
446
447 devc = g_malloc0(sizeof(struct dev_context));
448 sr_sw_limits_init(&devc->limits);
449 devc->model = &models[modelid];
450
451 sdi->priv = devc;
452
453 /* Setup channels and channel groups. */
454 for (cnt = 0; cnt < models[modelid].num_channels; cnt++) {
455 snprintf(channel, sizeof(channel), "CH%d", cnt + 1);
456 ch = sr_channel_new(sdi, cnt, SR_CHANNEL_ANALOG, TRUE, channel);
457
458 devc->channel_status[cnt].info = g_slist_append(NULL, ch);
459
460 cg = g_malloc(sizeof(struct sr_channel_group));
461 snprintf(channel, sizeof(channel), "CG%d", cnt+1);
462 cg->name = g_strdup(channel);
463 cg->priv = NULL;
464 cg->channels = g_slist_append(NULL, ch);
465
466 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
467 }
468
469 /* Query status */
470 if (lps_query_status(sdi) != SR_OK)
471 goto exit_err;
472
473 serial_close(serial);
474
475 return std_scan_complete(drv, g_slist_append(NULL, sdi));
476
477exit_err:
478 sr_info("%s: Error!", __func__);
479
480 if (serial) {
481 serial_close(serial);
482 sr_serial_dev_inst_free(serial);
483 }
484 g_free(devc);
485 if (sdi)
486 sr_dev_inst_free(sdi);
487
488 return NULL;
489}
490
491/** Scan for LPS-301 device. */
492static GSList *scan_lps301(struct sr_dev_driver *di, GSList *options)
493{
494 return do_scan(LPS_301, di, options);
495}
496
497static void dev_clear_private(struct dev_context *devc)
498{
499 int ch_idx;
500
501 /* Free channel_status.info (list only, data owned by sdi). */
502 for (ch_idx = 0; ch_idx < devc->model->num_channels; ch_idx++)
503 g_slist_free(devc->channel_status[ch_idx].info);
504}
505
506static int dev_clear_lps301(const struct sr_dev_driver *di)
507{
508 return std_dev_clear(di, (std_dev_clear_callback)dev_clear_private);
509}
510
511static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
512 const struct sr_channel_group *cg)
513{
514 struct dev_context *devc;
515 struct sr_channel *ch;
516 int ch_idx;
517
518 if (!sdi)
519 return SR_ERR_ARG;
520
521 devc = sdi->priv;
522
523 if (!cg) {
524 /* No channel group: global options. */
525 switch (key) {
526 case SR_CONF_LIMIT_SAMPLES:
527 case SR_CONF_LIMIT_MSEC:
528 return sr_sw_limits_config_get(&devc->limits, key, data);
529 case SR_CONF_CHANNEL_CONFIG:
530 *data = g_variant_new_string(channel_modes[devc->tracking_mode]);
531 break;
532 default:
533 return SR_ERR_NA;
534 }
535 } else {
536 /* We only ever have one channel per channel group in this driver. */
537 ch = cg->channels->data;
538 ch_idx = ch->index;
539 switch (key) {
540 case SR_CONF_VOLTAGE:
541 *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_last);
542 break;
543 case SR_CONF_VOLTAGE_TARGET:
544 *data = g_variant_new_double(devc->channel_status[ch_idx].output_voltage_max);
545 break;
546 case SR_CONF_CURRENT:
547 *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_last);
548 break;
549 case SR_CONF_CURRENT_LIMIT:
550 *data = g_variant_new_double(devc->channel_status[ch_idx].output_current_max);
551 break;
552 case SR_CONF_ENABLED:
553 *data = g_variant_new_boolean(devc->channel_status[ch_idx].output_enabled);
554 break;
555 default:
556 return SR_ERR_NA;
557 }
558 }
559
560 return SR_OK;
561}
562
563static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
564 const struct sr_channel_group *cg)
565{
566 struct dev_context *devc;
567 struct sr_channel *ch;
568 gdouble dval;
569 int ch_idx;
570 const char *sval;
571 gboolean bval;
572 int idx;
573 gboolean found;
574
575 if (sdi->status != SR_ST_ACTIVE)
576 return SR_ERR_DEV_CLOSED;
577
578 devc = sdi->priv;
579
580 /* Cannot change settings while acquisition active, would cause a mess with commands.
581 * Changing this would be possible, but tricky. */
582 if (devc->acq_running)
583 return SR_ERR_NA;
584
585 if (!cg) {
586 /* No channel group: global options. */
587 switch (key) {
588 case SR_CONF_LIMIT_MSEC:
589 case SR_CONF_LIMIT_SAMPLES:
590 return sr_sw_limits_config_set(&devc->limits, key, data);
591 case SR_CONF_CHANNEL_CONFIG:
592 sval = g_variant_get_string(data, NULL);
593 found = FALSE;
594 for (idx = 0; idx < (int)ARRAY_SIZE(channel_modes); idx++) {
595 if (!strcmp(sval, channel_modes[idx])) {
596 found = TRUE;
597 if (devc->tracking_mode == idx)
598 break; /* Nothing to do! */
599 devc->tracking_mode = idx;
600 if (devc->model->modelid >= LPS_304) /* No use to set anything in the smaller models. */
601 return lps_cmd_ok(sdi->conn, "TRACK%1d", devc->tracking_mode);
602 }
603 if (devc->model->modelid <= LPS_303) /* Only first setting possible for smaller models. */
604 break;
605 }
606 if (!found)
607 return SR_ERR_ARG;
608 break;
609 default:
610 return SR_ERR_NA;
611 }
612 } else {
613 /* Channel group specified: per-channel options. */
614 /* We only ever have one channel per channel group in this driver. */
615 ch = cg->channels->data;
616 ch_idx = ch->index;
617
618 switch (key) {
619 case SR_CONF_VOLTAGE_TARGET:
620 dval = g_variant_get_double(data);
621 if (dval < 0 || dval > devc->model->channels[ch_idx].voltage[1])
622 return SR_ERR_ARG;
623 if (ch_idx == 2) {
624 if (devc->model->modelid < LPS_304)
625 return SR_ERR_ARG;
626
627 if (fabs(dval - 5.000) <= 0.001)
628 dval = 5.0;
629 else if ((devc->model->modelid >= LPS_305) && (fabs(dval - 3.300) <= 0.001))
630 dval = 3.3;
631 else return SR_ERR_ARG;
632 }
633
634 devc->channel_status[ch_idx].output_voltage_max = dval;
635 if (ch_idx == 2)
636 return lps_cmd_ok(sdi->conn, "VDD%1.0f", trunc(dval));
637 else
638 return lps_cmd_ok(sdi->conn, "VSET%d %05.3f", ch_idx+1, dval);
639 break;
640 case SR_CONF_CURRENT_LIMIT:
641 dval = g_variant_get_double(data);
642 if (dval < 0 || dval > devc->model->channels[ch_idx].current[1])
643 return SR_ERR_ARG;
644 if (ch_idx == 2) /* No current setting for CH3. */
645 return SR_ERR_NA;
646 devc->channel_status[ch_idx].output_current_max = dval;
647 return lps_cmd_ok(sdi->conn, "ISET%d %05.4f", ch_idx+1, dval);
648 break;
649 case SR_CONF_ENABLED:
650 bval = g_variant_get_boolean(data);
651 if (bval == devc->channel_status[ch_idx].output_enabled) /* Nothing to do. */
652 break;
653 devc->channel_status[ch_idx].output_enabled = bval;
654 if (ch_idx != 2) { /* Channels 1,2 can be set only together. */
655 devc->channel_status[ch_idx^1].output_enabled = bval;
656 return lps_cmd_ok(sdi->conn, "OUT%1d", (int)bval);
657 } else { /* Channel 3: No command to disable output, set voltage to 0 instead. */
658 if (bval)
659 return lps_cmd_ok(sdi->conn, "VDD%1.0f", devc->channel_status[ch_idx].output_voltage_max);
660 else
661 return lps_cmd_ok(sdi->conn, "VDD0");
662 }
663 break;
664 default:
665 return SR_ERR_NA;
666 }
667 }
668
669 return SR_OK;
670}
671
672static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
673 const struct sr_channel_group *cg)
674{
675 struct dev_context *devc;
676 struct sr_channel *ch;
677 int ch_idx, i;
678 GVariant *gvar;
679 GVariantBuilder gvb;
680
681 /* Driver options, no device instance necessary. */
682 switch (key) {
683 case SR_CONF_SCAN_OPTIONS:
684 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
685 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
686 return SR_OK;
687 case SR_CONF_DEVICE_OPTIONS:
688 if (sdi)
689 break;
690 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
691 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
692 return SR_OK;
693 default:
694 if (!sdi)
695 return SR_ERR_ARG;
696 devc = sdi->priv;
697 break;
698 }
699
700 /* Device options, independent from channel groups. */
701 if (!cg) {
702 switch (key) {
703 case SR_CONF_DEVICE_OPTIONS:
704 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
705 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
706 return SR_OK;
707 case SR_CONF_CHANNEL_CONFIG:
708 if (devc->model->modelid <= LPS_303) {
709 /* The 1-channel models. */
710 *data = g_variant_new_strv(channel_modes, 1);
711 } else {
712 /* The other models support all modes. */
713 *data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
714 }
715 return SR_OK;
716 default:
717 return SR_ERR_NA;
718 }
719 }
720
721 /* Device options, depending on channel groups. */
722 ch = cg->channels->data;
723 ch_idx = ch->index;
724 switch (key) {
725 case SR_CONF_DEVICE_OPTIONS:
726 if ((ch_idx == 0) || (ch_idx == 1)) /* CH1, CH2 */
727 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
728 devopts_ch12, ARRAY_SIZE(devopts_ch12), sizeof(uint32_t));
729 else /* Must be CH3 */
730 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
731 devopts_ch3, ARRAY_SIZE(devopts_ch3), sizeof(uint32_t));
732 break;
733 case SR_CONF_VOLTAGE_TARGET:
734 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
735 /* Min, max, step. */
736 for (i = 0; i < 3; i++) {
737 gvar = g_variant_new_double(devc->model->channels[ch_idx].voltage[i]);
738 g_variant_builder_add_value(&gvb, gvar);
739 }
740 *data = g_variant_builder_end(&gvb);
741 break;
742 case SR_CONF_CURRENT_LIMIT:
743 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
744 /* Min, max, step. */
745 for (i = 0; i < 3; i++) {
746 gvar = g_variant_new_double(devc->model->channels[ch_idx].current[i]);
747 g_variant_builder_add_value(&gvb, gvar);
748 }
749 *data = g_variant_builder_end(&gvb);
750 break;
751 default:
752 return SR_ERR_NA;
753 }
754
755 return SR_OK;
756}
757
758static int dev_acquisition_start(const struct sr_dev_inst *sdi)
759{
760 struct dev_context *devc;
761 struct sr_serial_dev_inst *serial;
762
763 if (sdi->status != SR_ST_ACTIVE)
764 return SR_ERR_DEV_CLOSED;
765
766 devc = sdi->priv;
767
768 devc->acq_running = TRUE;
769
770 serial = sdi->conn;
771 serial_source_add(sdi->session, serial, G_IO_IN, 50,
772 motech_lps_30x_receive_data, (void *)sdi);
773 std_session_send_df_header(sdi);
774
775 sr_sw_limits_acquisition_start(&devc->limits);
776
777 devc->acq_req = AQ_NONE;
778 /* Do not start polling device here, the read function will do it in 50 ms. */
779
780 return SR_OK;
781}
782
783static int dev_acquisition_stop(struct sr_dev_inst *sdi)
784{
785 return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
786}
787
788static struct sr_dev_driver motech_lps_301_driver_info = {
789 .name = "motech-lps-301",
790 .longname = "Motech LPS-301",
791 .api_version = 1,
792 .init = std_init,
793 .cleanup = std_cleanup,
794 .scan = scan_lps301,
795 .dev_list = std_dev_list,
796 .dev_clear = dev_clear_lps301,
797 .config_get = config_get,
798 .config_set = config_set,
799 .config_list = config_list,
800 .dev_open = std_serial_dev_open,
801 .dev_close = std_serial_dev_close,
802 .dev_acquisition_start = dev_acquisition_start,
803 .dev_acquisition_stop = dev_acquisition_stop,
804 .context = NULL,
805};
806SR_REGISTER_DEV_DRIVER(motech_lps_301_driver_info);
Hardware access and backend lib