2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013, 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
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 * Gossen Metrawatt Metrahit 1x/2x drivers
28 /* Serial communication parameters for Metrahit 1x/2x with 'RS232' adaptor */
29 #define SERIALCOMM_1X_RS232 "8228/6n1/dtr=1/rts=1/flow=0" /* =8192, closer with divider */
30 #define SERIALCOMM_2X_RS232 "9600/6n1/dtr=1/rts=1/flow=0"
31 #define SERIALCOMM_2X "9600/8n1/dtr=1/rts=1/flow=0"
32 #define VENDOR_GMC "Gossen Metrawatt"
34 SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info;
35 SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info;
37 static const uint32_t scanopts[] = {
42 /** Hardware capabilities for Metrahit 1x/2x devices in send mode. */
43 static const uint32_t devopts_sm[] = {
45 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
47 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
48 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
51 /** Hardware capabilities for Metrahit 2x devices in bidirectional Mode. */
52 static const uint32_t devopts_bd[] = {
54 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
56 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
57 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
58 SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
63 * - For the 29S SR_CONF_ENERGYMETER, too.
64 * - SR_CONF_PATTERN_MODE for some 2x devices
65 * - SR_CONF_DATALOG for 22M, 26M, 29S and storage adaptors.
66 * Need to implement device-specific lists.
69 /** Init driver gmc_mh_1x_2x_rs232. */
70 static int init_1x_2x_rs232(struct sr_context *sr_ctx)
72 return std_init(sr_ctx, &gmc_mh_1x_2x_rs232_driver_info, LOG_PREFIX);
75 /** Init driver gmc_mh_2x_bd232. */
76 static int init_2x_bd232(struct sr_context *sr_ctx)
78 return std_init(sr_ctx, &gmc_mh_2x_bd232_driver_info, LOG_PREFIX);
82 * Read single byte from serial port.
84 * @retval -1 Timeout or error.
87 static int read_byte(struct sr_serial_dev_inst *serial, gint64 timeout)
93 rc = serial_read_nonblocking(serial, &result, 1);
95 sr_spew("read: 0x%02x/%d", result, result);
98 if (g_get_monotonic_time() > timeout)
105 * Try to detect GMC 1x/2x multimeter model in send mode for max. 1 second.
107 * @param serial Configured, open serial port.
109 * @retval NULL Detection failed.
110 * @retval other Model code.
112 static enum model scan_model_sm(struct sr_serial_dev_inst *serial)
114 int byte, bytecnt, cnt;
118 model = METRAHIT_NONE;
119 timeout_us = g_get_monotonic_time() + 1 * 1000 * 1000;
122 * Try to find message consisting of device code and several
123 * (at least 4) data bytes.
125 for (bytecnt = 0; bytecnt < 100; bytecnt++) {
126 byte = read_byte(serial, timeout_us);
127 if ((byte == -1) || (timeout_us < g_get_monotonic_time()))
129 if ((byte & MSGID_MASK) == MSGID_INF) {
130 if (!(model = gmc_decode_model_sm(byte & MSGC_MASK)))
132 /* Now expect (at least) 4 data bytes. */
133 for (cnt = 0; cnt < 4; cnt++) {
134 byte = read_byte(serial, timeout_us);
136 ((byte & MSGID_MASK) != MSGID_DATA))
138 model = METRAHIT_NONE;
151 * Scan for Metrahit 1x and Metrahit 2x in send mode using Gossen Metrawatt
154 * The older 1x models use 8192 baud and the newer 2x 9600 baud.
155 * The DMM usually sends up to about 20 messages per second. However, depending
156 * on configuration and measurement mode the intervals can be much larger and
157 * then the detection might not work.
159 static GSList *scan_1x_2x_rs232(GSList *options)
161 struct sr_dev_inst *sdi;
162 struct drv_context *drvc;
163 struct dev_context *devc;
164 struct sr_config *src;
165 struct sr_channel *ch;
166 struct sr_serial_dev_inst *serial;
168 const char *conn, *serialcomm;
170 gboolean serialcomm_given;
173 drvc = (&gmc_mh_1x_2x_rs232_driver_info)->priv;
174 drvc->instances = NULL;
175 conn = serialcomm = NULL;
176 model = METRAHIT_NONE;
177 serialcomm_given = FALSE;
179 sr_spew("scan_1x_2x_rs232() called!");
181 for (l = options; l; l = l->next) {
185 conn = g_variant_get_string(src->data, NULL);
187 case SR_CONF_SERIALCOMM:
188 serialcomm = g_variant_get_string(src->data, NULL);
189 serialcomm_given = TRUE;
196 serialcomm = SERIALCOMM_2X_RS232;
198 serial = sr_serial_dev_inst_new(conn, serialcomm);
200 if (serial_open(serial, SERIAL_RDWR) != SR_OK) {
201 sr_serial_dev_inst_free(serial);
205 serial_flush(serial);
207 model = scan_model_sm(serial);
210 * If detection failed and no user-supplied parameters,
211 * try second baud rate.
213 if ((model == METRAHIT_NONE) && !serialcomm_given) {
214 serialcomm = SERIALCOMM_1X_RS232;
215 g_free(serial->serialcomm);
216 serial->serialcomm = g_strdup(serialcomm);
217 if (serial_set_paramstr(serial, serialcomm) == SR_OK) {
218 serial_flush(serial);
219 model = scan_model_sm(serial);
223 if (model != METRAHIT_NONE) {
224 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(model));
225 sdi = g_malloc0(sizeof(struct sr_dev_inst));
226 sdi->status = SR_ST_INACTIVE;
227 sdi->vendor = g_strdup(VENDOR_GMC);
228 sdi->model = g_strdup(gmc_model_str(model));
229 devc = g_malloc0(sizeof(struct dev_context));
231 devc->limit_samples = 0;
232 devc->limit_msec = 0;
233 devc->num_samples = 0;
234 devc->elapsed_msec = g_timer_new();
235 devc->settings_ok = FALSE;
238 sdi->driver = &gmc_mh_1x_2x_rs232_driver_info;
239 ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1");
240 sdi->channels = g_slist_append(sdi->channels, ch);
241 drvc->instances = g_slist_append(drvc->instances, sdi);
242 devices = g_slist_append(devices, sdi);
248 /** Scan for Metrahit 2x in a bidirectional mode using Gossen Metrawatt 'BD 232' interface.
251 static GSList *scan_2x_bd232(GSList *options)
253 struct sr_dev_inst *sdi;
254 struct drv_context *drvc;
255 struct dev_context *devc;
256 struct sr_config *src;
257 struct sr_channel *ch;
258 struct sr_serial_dev_inst *serial;
260 const char *conn, *serialcomm;
266 conn = serialcomm = NULL;
269 drvc = (&gmc_mh_2x_bd232_driver_info)->priv;
270 drvc->instances = NULL;
272 sr_spew("scan_2x_bd232() called!");
274 for (l = options; l; l = l->next) {
278 conn = g_variant_get_string(src->data, NULL);
280 case SR_CONF_SERIALCOMM:
281 serialcomm = g_variant_get_string(src->data, NULL);
288 serialcomm = SERIALCOMM_2X;
290 serial = sr_serial_dev_inst_new(conn, serialcomm);
292 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
295 devc = g_malloc0(sizeof(struct dev_context));
297 sdi = g_malloc0(sizeof(struct sr_dev_inst));
298 sdi->status = SR_ST_INACTIVE;
299 sdi->vendor = g_strdup(VENDOR_GMC);
302 /* Send message 03 "Query multimeter version and status" */
305 if (req_stat14(sdi, TRUE) != SR_OK)
308 /* Wait for reply from device(s) for up to 2s. */
309 timeout_us = g_get_monotonic_time() + 2*1000*1000;
311 while (timeout_us > g_get_monotonic_time()) {
312 /* Receive reply (14 bytes) */
314 for (cnt = 0; cnt < 14; cnt++) {
315 byte = read_byte(serial, timeout_us);
317 devc->buf[devc->buflen++] = (byte & MASK_6BITS);
320 if (devc->buflen != 14)
323 devc->addr = devc->buf[0];
327 if (devc->model != METRAHIT_NONE) {
328 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(devc->model));
329 devc->elapsed_msec = g_timer_new();
330 sdi->model = g_strdup(gmc_model_str(devc->model));
331 sdi->version = g_strdup_printf("Firmware %d.%d", devc->fw_ver_maj, devc->fw_ver_min);
334 sdi->driver = &gmc_mh_2x_bd232_driver_info;
335 ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1");
336 sdi->channels = g_slist_append(sdi->channels, ch);
337 drvc->instances = g_slist_append(drvc->instances, sdi);
338 devices = g_slist_append(devices, sdi);
339 devc = g_malloc0(sizeof(struct dev_context));
340 sdi = g_malloc0(sizeof(struct sr_dev_inst));
341 sdi->status = SR_ST_INACTIVE;
342 sdi->vendor = g_strdup(VENDOR_GMC);
346 /* Free last alloc if no device found */
347 if (devc->model == METRAHIT_NONE) {
349 sr_dev_inst_free(sdi);
355 sr_info("scan_2x_bd232(): Error!");
358 sr_serial_dev_inst_free(serial);
362 sr_dev_inst_free(sdi);
367 /** Driver device list function */
368 static GSList *dev_list_1x_2x_rs232(void)
370 return ((struct drv_context *)(gmc_mh_1x_2x_rs232_driver_info.priv))->instances;
373 /** Driver device list function */
374 static GSList *dev_list_2x_bd232(void)
376 return ((struct drv_context *)(gmc_mh_2x_bd232_driver_info.priv))
380 static int dev_close(struct sr_dev_inst *sdi)
382 struct dev_context *devc;
384 std_serial_dev_close(sdi);
386 sdi->status = SR_ST_INACTIVE;
388 /* Free dynamically allocated resources. */
389 if ((devc = sdi->priv) && devc->elapsed_msec) {
390 g_timer_destroy(devc->elapsed_msec);
391 devc->elapsed_msec = NULL;
392 devc->model = METRAHIT_NONE;
398 static int cleanup_sm_rs232(void)
400 return std_dev_clear(&gmc_mh_1x_2x_rs232_driver_info, NULL);
403 static int cleanup_2x_bd232(void)
405 return std_dev_clear(&gmc_mh_2x_bd232_driver_info, NULL);
408 /** Get value of configuration item */
409 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
410 const struct sr_channel_group *cg)
413 struct dev_context *devc;
419 if (!sdi || !(devc = sdi->priv))
424 case SR_CONF_LIMIT_SAMPLES:
425 *data = g_variant_new_uint64(devc->limit_samples);
427 case SR_CONF_LIMIT_MSEC:
428 *data = g_variant_new_uint64(devc->limit_msec);
430 case SR_CONF_POWER_OFF:
431 *data = g_variant_new_boolean(FALSE);
440 /** Implementation of config_list, auxiliary function for common parts, */
441 static int config_list_common(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
442 const struct sr_channel_group *cg)
448 case SR_CONF_SCAN_OPTIONS:
449 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
450 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
459 /** Implementation of config_list for Metrahit 1x/2x send mode */
460 static int config_list_sm(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
461 const struct sr_channel_group *cg)
464 case SR_CONF_DEVICE_OPTIONS:
465 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
466 devopts_sm, ARRAY_SIZE(devopts_sm), sizeof(uint32_t));
469 return config_list_common(key, data, sdi, cg);
475 /** Implementation of config_list for Metrahit 2x bidirectional mode */
476 static int config_list_bd(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
477 const struct sr_channel_group *cg)
480 case SR_CONF_DEVICE_OPTIONS:
481 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
482 devopts_bd, ARRAY_SIZE(devopts_bd), sizeof(uint32_t));
485 return config_list_common(key, data, sdi, cg);
491 static int dev_acquisition_start_1x_2x_rs232(const struct sr_dev_inst *sdi,
494 struct dev_context *devc;
495 struct sr_serial_dev_inst *serial;
497 if (!sdi || !cb_data || !(devc = sdi->priv))
500 if (sdi->status != SR_ST_ACTIVE)
501 return SR_ERR_DEV_CLOSED;
503 devc->cb_data = cb_data;
504 devc->settings_ok = FALSE;
507 /* Send header packet to the session bus. */
508 std_session_send_df_header(cb_data, LOG_PREFIX);
510 /* Start timer, if required. */
511 if (devc->limit_msec)
512 g_timer_start(devc->elapsed_msec);
514 /* Poll every 40ms, or whenever some data comes in. */
516 serial_source_add(sdi->session, serial, G_IO_IN, 40,
517 gmc_mh_1x_2x_receive_data, (void *)sdi);
522 static int dev_acquisition_start_2x_bd232(const struct sr_dev_inst *sdi,
525 struct dev_context *devc;
526 struct sr_serial_dev_inst *serial;
528 if (!sdi || !cb_data || !(devc = sdi->priv))
531 if (sdi->status != SR_ST_ACTIVE)
532 return SR_ERR_DEV_CLOSED;
534 devc->cb_data = cb_data;
535 devc->settings_ok = FALSE;
538 /* Send header packet to the session bus. */
539 std_session_send_df_header(cb_data, LOG_PREFIX);
541 /* Start timer, if required. */
542 if (devc->limit_msec)
543 g_timer_start(devc->elapsed_msec);
545 /* Poll every 40ms, or whenever some data comes in. */
547 serial_source_add(sdi->session, serial, G_IO_IN, 40,
548 gmc_mh_2x_receive_data, (void *)sdi);
550 /* Send start message */
551 return req_meas14(sdi);
554 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
556 struct dev_context *devc;
558 /* Stop timer, if required. */
559 if (sdi && (devc = sdi->priv) && devc->limit_msec)
560 g_timer_stop(devc->elapsed_msec);
562 return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close,
563 sdi->conn, LOG_PREFIX);
566 SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info = {
567 .name = "gmc-mh-1x-2x-rs232",
568 .longname = "Gossen Metrawatt Metrahit 1x/2x, RS232 interface",
570 .init = init_1x_2x_rs232,
571 .cleanup = cleanup_sm_rs232,
572 .scan = scan_1x_2x_rs232,
573 .dev_list = dev_list_1x_2x_rs232,
575 .config_get = config_get,
576 .config_set = config_set,
577 .config_list = config_list_sm,
578 .dev_open = std_serial_dev_open,
579 .dev_close = dev_close,
580 .dev_acquisition_start = dev_acquisition_start_1x_2x_rs232,
581 .dev_acquisition_stop = dev_acquisition_stop,
585 SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info = {
586 .name = "gmc-mh-2x-bd232",
587 .longname = "Gossen Metrawatt Metrahit 2x, BD232/SI232-II interface",
589 .init = init_2x_bd232,
590 .cleanup = cleanup_2x_bd232,
591 .scan = scan_2x_bd232,
592 .dev_list = dev_list_2x_bd232,
594 .config_get = config_get,
595 .config_set = config_set,
596 .config_list = config_list_bd,
597 .dev_open = std_serial_dev_open,
598 .dev_close = dev_close,
599 .dev_acquisition_start = dev_acquisition_start_2x_bd232,
600 .dev_acquisition_stop = dev_acquisition_stop,