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 static const uint32_t scanopts[] = {
40 /** Hardware capabilities for Metrahit 1x/2x devices in send mode. */
41 static const uint32_t devopts_sm[] = {
43 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
45 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
46 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
49 /** Hardware capabilities for Metrahit 2x devices in bidirectional Mode. */
50 static const uint32_t devopts_bd[] = {
52 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
54 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
55 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
56 SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
60 * - For the 29S SR_CONF_ENERGYMETER, too.
61 * - SR_CONF_PATTERN_MODE for some 2x devices
62 * - SR_CONF_DATALOG for 22M, 26M, 29S and storage adaptors.
63 * Need to implement device-specific lists.
67 * Read single byte from serial port.
69 * @retval -1 Timeout or error.
72 static int read_byte(struct sr_serial_dev_inst *serial, gint64 timeout)
78 rc = serial_read_nonblocking(serial, &result, 1);
80 sr_spew("read: 0x%02x/%d", result, result);
83 if (g_get_monotonic_time() > timeout)
90 * Try to detect GMC 1x/2x multimeter model in send mode for max. 1 second.
92 * @param serial Configured, open serial port.
94 * @retval NULL Detection failed.
95 * @retval other Model code.
97 static enum model scan_model_sm(struct sr_serial_dev_inst *serial)
99 int byte, bytecnt, cnt;
103 model = METRAHIT_NONE;
104 timeout_us = g_get_monotonic_time() + (1 * 1000 * 1000);
107 * Try to find message consisting of device code and several
108 * (at least 4) data bytes.
110 for (bytecnt = 0; bytecnt < 100; bytecnt++) {
111 byte = read_byte(serial, timeout_us);
112 if ((byte == -1) || (timeout_us < g_get_monotonic_time()))
114 if ((byte & MSGID_MASK) == MSGID_INF) {
115 if (!(model = gmc_decode_model_sm(byte & MSGC_MASK)))
117 /* Now expect (at least) 4 data bytes. */
118 for (cnt = 0; cnt < 4; cnt++) {
119 byte = read_byte(serial, timeout_us);
121 ((byte & MSGID_MASK) != MSGID_DATA))
123 model = METRAHIT_NONE;
136 * Scan for Metrahit 1x and Metrahit 2x in send mode using Gossen Metrawatt
139 * The older 1x models use 8192 baud and the newer 2x 9600 baud.
140 * The DMM usually sends up to about 20 messages per second. However, depending
141 * on configuration and measurement mode the intervals can be much larger and
142 * then the detection might not work.
144 static GSList *scan_1x_2x_rs232(struct sr_dev_driver *di, GSList *options)
146 struct sr_dev_inst *sdi;
147 struct dev_context *devc;
148 struct sr_config *src;
149 struct sr_serial_dev_inst *serial;
151 const char *conn, *serialcomm;
153 gboolean serialcomm_given;
156 conn = serialcomm = NULL;
157 serialcomm_given = FALSE;
159 sr_spew("scan_1x_2x_rs232() called!");
161 for (l = options; l; l = l->next) {
165 conn = g_variant_get_string(src->data, NULL);
167 case SR_CONF_SERIALCOMM:
168 serialcomm = g_variant_get_string(src->data, NULL);
169 serialcomm_given = TRUE;
176 serialcomm = SERIALCOMM_2X_RS232;
178 serial = sr_serial_dev_inst_new(conn, serialcomm);
180 if (serial_open(serial, SERIAL_RDWR) != SR_OK) {
181 sr_serial_dev_inst_free(serial);
185 serial_flush(serial);
187 model = scan_model_sm(serial);
190 * If detection failed and no user-supplied parameters,
191 * try second baud rate.
193 if ((model == METRAHIT_NONE) && !serialcomm_given) {
194 serialcomm = SERIALCOMM_1X_RS232;
195 g_free(serial->serialcomm);
196 serial->serialcomm = g_strdup(serialcomm);
197 if (serial_set_paramstr(serial, serialcomm) == SR_OK) {
198 serial_flush(serial);
199 model = scan_model_sm(serial);
203 if (model != METRAHIT_NONE) {
204 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(model));
205 sdi = g_malloc0(sizeof(struct sr_dev_inst));
206 sdi->status = SR_ST_INACTIVE;
207 sdi->vendor = g_strdup(VENDOR_GMC);
208 sdi->model = g_strdup(gmc_model_str(model));
209 devc = g_malloc0(sizeof(struct dev_context));
211 devc->limit_samples = 0;
212 devc->limit_msec = 0;
213 devc->num_samples = 0;
214 devc->elapsed_msec = g_timer_new();
215 devc->settings_ok = FALSE;
218 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
219 devices = g_slist_append(devices, sdi);
222 return std_scan_complete(di, devices);
226 * Scan for Metrahit 2x in a bidirectional mode using Gossen Metrawatt
227 * 'BD 232' interface.
229 static GSList *scan_2x_bd232(struct sr_dev_driver *di, GSList *options)
231 struct sr_dev_inst *sdi;
232 struct dev_context *devc;
233 struct sr_config *src;
234 struct sr_serial_dev_inst *serial;
236 const char *conn, *serialcomm;
242 conn = serialcomm = NULL;
245 sr_spew("scan_2x_bd232() called!");
247 for (l = options; l; l = l->next) {
251 conn = g_variant_get_string(src->data, NULL);
253 case SR_CONF_SERIALCOMM:
254 serialcomm = g_variant_get_string(src->data, NULL);
261 serialcomm = SERIALCOMM_2X;
263 serial = sr_serial_dev_inst_new(conn, serialcomm);
265 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
268 devc = g_malloc0(sizeof(struct dev_context));
270 sdi = g_malloc0(sizeof(struct sr_dev_inst));
271 sdi->status = SR_ST_INACTIVE;
272 sdi->vendor = g_strdup(VENDOR_GMC);
275 /* Send message 03 "Query multimeter version and status" */
277 if (req_stat14(sdi, TRUE) != SR_OK)
280 /* Wait for reply from device(s) for up to 2s. */
281 timeout_us = g_get_monotonic_time() + (2 * 1000 * 1000);
283 while (timeout_us > g_get_monotonic_time()) {
284 /* Receive reply (14 bytes) */
286 for (cnt = 0; cnt < GMC_REPLY_SIZE; cnt++) {
287 byte = read_byte(serial, timeout_us);
289 devc->buf[devc->buflen++] = (byte & MASK_6BITS);
292 if (devc->buflen != GMC_REPLY_SIZE)
295 devc->addr = devc->buf[0];
299 if (devc->model != METRAHIT_NONE) {
300 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(devc->model));
301 devc->elapsed_msec = g_timer_new();
302 sdi->model = g_strdup(gmc_model_str(devc->model));
303 sdi->version = g_strdup_printf("Firmware %d.%d", devc->fw_ver_maj, devc->fw_ver_min);
306 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
307 devices = g_slist_append(devices, sdi);
308 devc = g_malloc0(sizeof(struct dev_context));
309 sdi = g_malloc0(sizeof(struct sr_dev_inst));
310 sdi->status = SR_ST_INACTIVE;
311 sdi->vendor = g_strdup(VENDOR_GMC);
315 /* Free last alloc if no device found */
316 if (devc->model == METRAHIT_NONE) {
318 sr_dev_inst_free(sdi);
321 return std_scan_complete(di, devices);
324 sr_info("scan_2x_bd232(): Error!");
327 sr_serial_dev_inst_free(serial);
330 sr_dev_inst_free(sdi);
335 static int dev_close(struct sr_dev_inst *sdi)
337 struct dev_context *devc;
339 std_serial_dev_close(sdi);
341 sdi->status = SR_ST_INACTIVE;
343 /* Free dynamically allocated resources. */
344 if ((devc = sdi->priv) && devc->elapsed_msec) {
345 g_timer_destroy(devc->elapsed_msec);
346 devc->elapsed_msec = NULL;
347 devc->model = METRAHIT_NONE;
353 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
354 const struct sr_channel_group *cg)
357 struct dev_context *devc;
368 case SR_CONF_LIMIT_SAMPLES:
369 *data = g_variant_new_uint64(devc->limit_samples);
371 case SR_CONF_LIMIT_MSEC:
372 *data = g_variant_new_uint64(devc->limit_msec);
374 case SR_CONF_POWER_OFF:
375 *data = g_variant_new_boolean(FALSE);
384 /** Implementation of config_list, auxiliary function for common parts. */
385 static int config_list_common(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
386 const struct sr_channel_group *cg)
392 case SR_CONF_SCAN_OPTIONS:
393 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
394 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
403 /** Implementation of config_list for Metrahit 1x/2x send mode */
404 static int config_list_sm(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
405 const struct sr_channel_group *cg)
408 case SR_CONF_DEVICE_OPTIONS:
409 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
410 devopts_sm, ARRAY_SIZE(devopts_sm), sizeof(uint32_t));
413 return config_list_common(key, data, sdi, cg);
419 /** Implementation of config_list for Metrahit 2x bidirectional mode */
420 static int config_list_bd(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
421 const struct sr_channel_group *cg)
424 case SR_CONF_DEVICE_OPTIONS:
425 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
426 devopts_bd, ARRAY_SIZE(devopts_bd), sizeof(uint32_t));
429 return config_list_common(key, data, sdi, cg);
435 static int dev_acquisition_start_1x_2x_rs232(const struct sr_dev_inst *sdi)
437 struct dev_context *devc;
438 struct sr_serial_dev_inst *serial;
440 if (sdi->status != SR_ST_ACTIVE)
441 return SR_ERR_DEV_CLOSED;
444 devc->settings_ok = FALSE;
447 std_session_send_df_header(sdi, LOG_PREFIX);
449 /* Start timer, if required. */
450 if (devc->limit_msec)
451 g_timer_start(devc->elapsed_msec);
453 /* Poll every 40ms, or whenever some data comes in. */
455 serial_source_add(sdi->session, serial, G_IO_IN, 40,
456 gmc_mh_1x_2x_receive_data, (void *)sdi);
461 static int dev_acquisition_start_2x_bd232(const struct sr_dev_inst *sdi)
463 struct dev_context *devc;
464 struct sr_serial_dev_inst *serial;
466 if (sdi->status != SR_ST_ACTIVE)
467 return SR_ERR_DEV_CLOSED;
470 devc->settings_ok = FALSE;
473 std_session_send_df_header(sdi, LOG_PREFIX);
475 /* Start timer, if required. */
476 if (devc->limit_msec)
477 g_timer_start(devc->elapsed_msec);
479 /* Poll every 40ms, or whenever some data comes in. */
481 serial_source_add(sdi->session, serial, G_IO_IN, 40,
482 gmc_mh_2x_receive_data, (void *)sdi);
484 /* Send start message */
485 return req_meas14(sdi);
488 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
490 struct dev_context *devc;
492 /* Stop timer, if required. */
493 if (sdi && (devc = sdi->priv) && devc->limit_msec)
494 g_timer_stop(devc->elapsed_msec);
496 return std_serial_dev_acquisition_stop(sdi, dev_close,
497 sdi->conn, LOG_PREFIX);
500 static struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info = {
501 .name = "gmc-mh-1x-2x-rs232",
502 .longname = "Gossen Metrawatt Metrahit 1x/2x, RS232 interface",
505 .cleanup = std_cleanup,
506 .scan = scan_1x_2x_rs232,
507 .dev_list = std_dev_list,
509 .config_get = config_get,
510 .config_set = config_set,
511 .config_list = config_list_sm,
512 .dev_open = std_serial_dev_open,
513 .dev_close = dev_close,
514 .dev_acquisition_start = dev_acquisition_start_1x_2x_rs232,
515 .dev_acquisition_stop = dev_acquisition_stop,
518 SR_REGISTER_DEV_DRIVER(gmc_mh_1x_2x_rs232_driver_info);
520 static struct sr_dev_driver gmc_mh_2x_bd232_driver_info = {
521 .name = "gmc-mh-2x-bd232",
522 .longname = "Gossen Metrawatt Metrahit 2x, BD232/SI232-II interface",
525 .cleanup = std_cleanup,
526 .scan = scan_2x_bd232,
527 .dev_list = std_dev_list,
529 .config_get = config_get,
530 .config_set = config_set,
531 .config_list = config_list_bd,
532 .dev_open = std_serial_dev_open,
533 .dev_close = dev_close,
534 .dev_acquisition_start = dev_acquisition_start_2x_bd232,
535 .dev_acquisition_stop = dev_acquisition_stop,
538 SR_REGISTER_DEV_DRIVER(gmc_mh_2x_bd232_driver_info);