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
29 /* Serial communication parameters for Metrahit 1x/2x with 'RS232' adaptor */
30 #define SERIALCOMM_1X_RS232 "8228/6n1/dtr=1/rts=1/flow=0" /* =8192, closer with divider */
31 #define SERIALCOMM_2X_RS232 "9600/6n1/dtr=1/rts=1/flow=0"
32 #define SERIALCOMM_2X "9600/8n1/dtr=1/rts=1/flow=0"
33 #define VENDOR_GMC "Gossen Metrawatt"
35 SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info;
36 SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info;
38 static const uint32_t scanopts[] = {
43 /** Hardware capabilities for Metrahit 1x/2x devices in send mode. */
44 static const uint32_t devopts_sm[] = {
46 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
48 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
49 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
52 /** Hardware capabilities for Metrahit 2x devices in bidirectional Mode. */
53 static const uint32_t devopts_bd[] = {
55 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
57 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
58 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
59 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.
70 * Read single byte from serial port.
72 * @retval -1 Timeout or error.
75 static int read_byte(struct sr_serial_dev_inst *serial, gint64 timeout)
81 rc = serial_read_nonblocking(serial, &result, 1);
83 sr_spew("read: 0x%02x/%d", result, result);
86 if (g_get_monotonic_time() > timeout)
93 * Try to detect GMC 1x/2x multimeter model in send mode for max. 1 second.
95 * @param serial Configured, open serial port.
97 * @retval NULL Detection failed.
98 * @retval other Model code.
100 static enum model scan_model_sm(struct sr_serial_dev_inst *serial)
102 int byte, bytecnt, cnt;
106 model = METRAHIT_NONE;
107 timeout_us = g_get_monotonic_time() + (1 * 1000 * 1000);
110 * Try to find message consisting of device code and several
111 * (at least 4) data bytes.
113 for (bytecnt = 0; bytecnt < 100; bytecnt++) {
114 byte = read_byte(serial, timeout_us);
115 if ((byte == -1) || (timeout_us < g_get_monotonic_time()))
117 if ((byte & MSGID_MASK) == MSGID_INF) {
118 if (!(model = gmc_decode_model_sm(byte & MSGC_MASK)))
120 /* Now expect (at least) 4 data bytes. */
121 for (cnt = 0; cnt < 4; cnt++) {
122 byte = read_byte(serial, timeout_us);
124 ((byte & MSGID_MASK) != MSGID_DATA))
126 model = METRAHIT_NONE;
139 * Scan for Metrahit 1x and Metrahit 2x in send mode using Gossen Metrawatt
142 * The older 1x models use 8192 baud and the newer 2x 9600 baud.
143 * The DMM usually sends up to about 20 messages per second. However, depending
144 * on configuration and measurement mode the intervals can be much larger and
145 * then the detection might not work.
147 static GSList *scan_1x_2x_rs232(struct sr_dev_driver *di, GSList *options)
149 struct sr_dev_inst *sdi;
150 struct drv_context *drvc;
151 struct dev_context *devc;
152 struct sr_config *src;
153 struct sr_serial_dev_inst *serial;
155 const char *conn, *serialcomm;
157 gboolean serialcomm_given;
161 drvc->instances = NULL;
162 conn = serialcomm = NULL;
163 serialcomm_given = FALSE;
165 sr_spew("scan_1x_2x_rs232() called!");
167 for (l = options; l; l = l->next) {
171 conn = g_variant_get_string(src->data, NULL);
173 case SR_CONF_SERIALCOMM:
174 serialcomm = g_variant_get_string(src->data, NULL);
175 serialcomm_given = TRUE;
182 serialcomm = SERIALCOMM_2X_RS232;
184 serial = sr_serial_dev_inst_new(conn, serialcomm);
186 if (serial_open(serial, SERIAL_RDWR) != SR_OK) {
187 sr_serial_dev_inst_free(serial);
191 serial_flush(serial);
193 model = scan_model_sm(serial);
196 * If detection failed and no user-supplied parameters,
197 * try second baud rate.
199 if ((model == METRAHIT_NONE) && !serialcomm_given) {
200 serialcomm = SERIALCOMM_1X_RS232;
201 g_free(serial->serialcomm);
202 serial->serialcomm = g_strdup(serialcomm);
203 if (serial_set_paramstr(serial, serialcomm) == SR_OK) {
204 serial_flush(serial);
205 model = scan_model_sm(serial);
209 if (model != METRAHIT_NONE) {
210 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(model));
211 sdi = g_malloc0(sizeof(struct sr_dev_inst));
212 sdi->status = SR_ST_INACTIVE;
213 sdi->vendor = g_strdup(VENDOR_GMC);
214 sdi->model = g_strdup(gmc_model_str(model));
215 devc = g_malloc0(sizeof(struct dev_context));
217 devc->limit_samples = 0;
218 devc->limit_msec = 0;
219 devc->num_samples = 0;
220 devc->elapsed_msec = g_timer_new();
221 devc->settings_ok = FALSE;
225 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
226 drvc->instances = g_slist_append(drvc->instances, sdi);
227 devices = g_slist_append(devices, sdi);
234 * Scan for Metrahit 2x in a bidirectional mode using Gossen Metrawatt
235 * 'BD 232' interface.
237 static GSList *scan_2x_bd232(struct sr_dev_driver *di, GSList *options)
239 struct sr_dev_inst *sdi;
240 struct drv_context *drvc;
241 struct dev_context *devc;
242 struct sr_config *src;
243 struct sr_serial_dev_inst *serial;
245 const char *conn, *serialcomm;
251 conn = serialcomm = NULL;
255 drvc->instances = NULL;
257 sr_spew("scan_2x_bd232() called!");
259 for (l = options; l; l = l->next) {
263 conn = g_variant_get_string(src->data, NULL);
265 case SR_CONF_SERIALCOMM:
266 serialcomm = g_variant_get_string(src->data, NULL);
273 serialcomm = SERIALCOMM_2X;
275 serial = sr_serial_dev_inst_new(conn, serialcomm);
277 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
280 devc = g_malloc0(sizeof(struct dev_context));
282 sdi = g_malloc0(sizeof(struct sr_dev_inst));
283 sdi->status = SR_ST_INACTIVE;
284 sdi->vendor = g_strdup(VENDOR_GMC);
287 /* Send message 03 "Query multimeter version and status" */
289 if (req_stat14(sdi, TRUE) != SR_OK)
292 /* Wait for reply from device(s) for up to 2s. */
293 timeout_us = g_get_monotonic_time() + (2 * 1000 * 1000);
295 while (timeout_us > g_get_monotonic_time()) {
296 /* Receive reply (14 bytes) */
298 for (cnt = 0; cnt < GMC_REPLY_SIZE; cnt++) {
299 byte = read_byte(serial, timeout_us);
301 devc->buf[devc->buflen++] = (byte & MASK_6BITS);
304 if (devc->buflen != GMC_REPLY_SIZE)
307 devc->addr = devc->buf[0];
311 if (devc->model != METRAHIT_NONE) {
312 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(devc->model));
313 devc->elapsed_msec = g_timer_new();
314 sdi->model = g_strdup(gmc_model_str(devc->model));
315 sdi->version = g_strdup_printf("Firmware %d.%d", devc->fw_ver_maj, devc->fw_ver_min);
319 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
320 drvc->instances = g_slist_append(drvc->instances, sdi);
321 devices = g_slist_append(devices, sdi);
322 devc = g_malloc0(sizeof(struct dev_context));
323 sdi = g_malloc0(sizeof(struct sr_dev_inst));
324 sdi->status = SR_ST_INACTIVE;
325 sdi->vendor = g_strdup(VENDOR_GMC);
329 /* Free last alloc if no device found */
330 if (devc->model == METRAHIT_NONE) {
332 sr_dev_inst_free(sdi);
338 sr_info("scan_2x_bd232(): Error!");
341 sr_serial_dev_inst_free(serial);
344 sr_dev_inst_free(sdi);
349 static int dev_close(struct sr_dev_inst *sdi)
351 struct dev_context *devc;
353 std_serial_dev_close(sdi);
355 sdi->status = SR_ST_INACTIVE;
357 /* Free dynamically allocated resources. */
358 if ((devc = sdi->priv) && devc->elapsed_msec) {
359 g_timer_destroy(devc->elapsed_msec);
360 devc->elapsed_msec = NULL;
361 devc->model = METRAHIT_NONE;
367 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
368 const struct sr_channel_group *cg)
371 struct dev_context *devc;
382 case SR_CONF_LIMIT_SAMPLES:
383 *data = g_variant_new_uint64(devc->limit_samples);
385 case SR_CONF_LIMIT_MSEC:
386 *data = g_variant_new_uint64(devc->limit_msec);
388 case SR_CONF_POWER_OFF:
389 *data = g_variant_new_boolean(FALSE);
398 /** Implementation of config_list, auxiliary function for common parts. */
399 static int config_list_common(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
400 const struct sr_channel_group *cg)
406 case SR_CONF_SCAN_OPTIONS:
407 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
408 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
417 /** Implementation of config_list for Metrahit 1x/2x send mode */
418 static int config_list_sm(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
419 const struct sr_channel_group *cg)
422 case SR_CONF_DEVICE_OPTIONS:
423 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
424 devopts_sm, ARRAY_SIZE(devopts_sm), sizeof(uint32_t));
427 return config_list_common(key, data, sdi, cg);
433 /** Implementation of config_list for Metrahit 2x bidirectional mode */
434 static int config_list_bd(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
435 const struct sr_channel_group *cg)
438 case SR_CONF_DEVICE_OPTIONS:
439 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
440 devopts_bd, ARRAY_SIZE(devopts_bd), sizeof(uint32_t));
443 return config_list_common(key, data, sdi, cg);
449 static int dev_acquisition_start_1x_2x_rs232(const struct sr_dev_inst *sdi)
451 struct dev_context *devc;
452 struct sr_serial_dev_inst *serial;
454 if (sdi->status != SR_ST_ACTIVE)
455 return SR_ERR_DEV_CLOSED;
458 devc->settings_ok = FALSE;
461 std_session_send_df_header(sdi, LOG_PREFIX);
463 /* Start timer, if required. */
464 if (devc->limit_msec)
465 g_timer_start(devc->elapsed_msec);
467 /* Poll every 40ms, or whenever some data comes in. */
469 serial_source_add(sdi->session, serial, G_IO_IN, 40,
470 gmc_mh_1x_2x_receive_data, (void *)sdi);
475 static int dev_acquisition_start_2x_bd232(const struct sr_dev_inst *sdi)
477 struct dev_context *devc;
478 struct sr_serial_dev_inst *serial;
480 if (sdi->status != SR_ST_ACTIVE)
481 return SR_ERR_DEV_CLOSED;
484 devc->settings_ok = FALSE;
487 std_session_send_df_header(sdi, LOG_PREFIX);
489 /* Start timer, if required. */
490 if (devc->limit_msec)
491 g_timer_start(devc->elapsed_msec);
493 /* Poll every 40ms, or whenever some data comes in. */
495 serial_source_add(sdi->session, serial, G_IO_IN, 40,
496 gmc_mh_2x_receive_data, (void *)sdi);
498 /* Send start message */
499 return req_meas14(sdi);
502 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
504 struct dev_context *devc;
506 /* Stop timer, if required. */
507 if (sdi && (devc = sdi->priv) && devc->limit_msec)
508 g_timer_stop(devc->elapsed_msec);
510 return std_serial_dev_acquisition_stop(sdi, dev_close,
511 sdi->conn, LOG_PREFIX);
514 SR_PRIV struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info = {
515 .name = "gmc-mh-1x-2x-rs232",
516 .longname = "Gossen Metrawatt Metrahit 1x/2x, RS232 interface",
519 .cleanup = std_cleanup,
520 .scan = scan_1x_2x_rs232,
521 .dev_list = std_dev_list,
523 .config_get = config_get,
524 .config_set = config_set,
525 .config_list = config_list_sm,
526 .dev_open = std_serial_dev_open,
527 .dev_close = dev_close,
528 .dev_acquisition_start = dev_acquisition_start_1x_2x_rs232,
529 .dev_acquisition_stop = dev_acquisition_stop,
533 SR_PRIV struct sr_dev_driver gmc_mh_2x_bd232_driver_info = {
534 .name = "gmc-mh-2x-bd232",
535 .longname = "Gossen Metrawatt Metrahit 2x, BD232/SI232-II interface",
538 .cleanup = std_cleanup,
539 .scan = scan_2x_bd232,
540 .dev_list = std_dev_list,
542 .config_get = config_get,
543 .config_set = config_set,
544 .config_list = config_list_bd,
545 .dev_open = std_serial_dev_open,
546 .dev_close = dev_close,
547 .dev_acquisition_start = dev_acquisition_start_2x_bd232,
548 .dev_acquisition_stop = dev_acquisition_stop,