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/>.
23 * Gossen Metrawatt Metrahit 1x/2x drivers
32 /* Serial communication parameters for Metrahit 1x/2x with 'RS232' adaptor */
33 #define SERIALCOMM_1X_RS232 "8228/6n1/dtr=1/rts=1/flow=0" /* =8192, closer with divider */
34 #define SERIALCOMM_2X_RS232 "9600/6n1/dtr=1/rts=1/flow=0"
35 #define SERIALCOMM_2X "9600/8n1/dtr=1/rts=1/flow=0"
36 #define VENDOR_GMC "Gossen Metrawatt"
38 static const uint32_t scanopts[] = {
43 static const uint32_t drvopts[] = {
45 SR_CONF_THERMOMETER, /**< All GMC 1x/2x multimeters seem to support this */
48 /** Hardware capabilities for Metrahit 1x/2x devices in send mode. */
49 static const uint32_t devopts_sm[] = {
51 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
52 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
55 /** Hardware capabilities for Metrahit 2x devices in bidirectional Mode. */
56 static const uint32_t devopts_bd[] = {
58 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
59 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
60 SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
64 * - For the 29S SR_CONF_ENERGYMETER, too.
65 * - SR_CONF_PATTERN_MODE for some 2x devices
66 * - SR_CONF_DATALOG for 22M, 26M, 29S and storage adaptors.
67 * Need to implement device-specific lists.
71 * Read single byte from serial port.
73 * @retval -1 Timeout or error.
76 static int read_byte(struct sr_serial_dev_inst *serial, gint64 timeout)
82 rc = serial_read_nonblocking(serial, &result, 1);
84 sr_spew("read: 0x%02x/%d", result, result);
87 if (g_get_monotonic_time() > timeout)
94 * Try to detect GMC 1x/2x multimeter model in send mode for max. 1 second.
96 * @param serial Configured, open serial port.
98 * @retval NULL Detection failed.
99 * @retval other Model code.
101 static enum model scan_model_sm(struct sr_serial_dev_inst *serial)
103 int byte, bytecnt, cnt;
107 model = METRAHIT_NONE;
108 timeout_us = g_get_monotonic_time() + (1 * 1000 * 1000);
111 * Try to find message consisting of device code and several
112 * (at least 4) data bytes.
114 for (bytecnt = 0; bytecnt < 100; bytecnt++) {
115 byte = read_byte(serial, timeout_us);
116 if ((byte == -1) || (timeout_us < g_get_monotonic_time()))
118 if ((byte & MSGID_MASK) == MSGID_INF) {
119 if (!(model = gmc_decode_model_sm(byte & MSGC_MASK)))
121 /* Now expect (at least) 4 data bytes. */
122 for (cnt = 0; cnt < 4; cnt++) {
123 byte = read_byte(serial, timeout_us);
125 ((byte & MSGID_MASK) != MSGID_DATA))
127 model = METRAHIT_NONE;
140 * Scan for Metrahit 1x and Metrahit 2x in send mode using Gossen Metrawatt
143 * The older 1x models use 8192 baud and the newer 2x 9600 baud.
144 * The DMM usually sends up to about 20 messages per second. However, depending
145 * on configuration and measurement mode the intervals can be much larger and
146 * then the detection might not work.
148 static GSList *scan_1x_2x_rs232(struct sr_dev_driver *di, GSList *options)
150 struct sr_dev_inst *sdi;
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;
160 conn = serialcomm = NULL;
161 serialcomm_given = FALSE;
163 for (l = options; l; l = l->next) {
167 conn = g_variant_get_string(src->data, NULL);
169 case SR_CONF_SERIALCOMM:
170 serialcomm = g_variant_get_string(src->data, NULL);
171 serialcomm_given = TRUE;
178 serialcomm = SERIALCOMM_2X_RS232;
180 serial = sr_serial_dev_inst_new(conn, serialcomm);
182 if (serial_open(serial, SERIAL_RDWR) != SR_OK) {
183 sr_serial_dev_inst_free(serial);
187 serial_flush(serial);
189 model = scan_model_sm(serial);
192 * If detection failed and no user-supplied parameters,
193 * try second baud rate.
195 if ((model == METRAHIT_NONE) && !serialcomm_given) {
196 serialcomm = SERIALCOMM_1X_RS232;
197 g_free(serial->serialcomm);
198 serial->serialcomm = g_strdup(serialcomm);
199 if (serial_set_paramstr(serial, serialcomm) == SR_OK) {
200 serial_flush(serial);
201 model = scan_model_sm(serial);
205 if (model != METRAHIT_NONE) {
206 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(model));
207 sdi = g_malloc0(sizeof(struct sr_dev_inst));
208 sdi->status = SR_ST_INACTIVE;
209 sdi->vendor = g_strdup(VENDOR_GMC);
210 sdi->model = g_strdup(gmc_model_str(model));
211 devc = g_malloc0(sizeof(struct dev_context));
212 sr_sw_limits_init(&devc->limits);
214 devc->settings_ok = FALSE;
217 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
218 devices = g_slist_append(devices, sdi);
221 return std_scan_complete(di, devices);
225 * Scan for Metrahit 2x in a bidirectional mode using Gossen Metrawatt
226 * 'BD 232' interface.
228 static GSList *scan_2x_bd232(struct sr_dev_driver *di, GSList *options)
230 struct sr_dev_inst *sdi;
231 struct dev_context *devc;
232 struct sr_config *src;
233 struct sr_serial_dev_inst *serial;
235 const char *conn, *serialcomm;
241 conn = serialcomm = NULL;
244 for (l = options; l; l = l->next) {
248 conn = g_variant_get_string(src->data, NULL);
250 case SR_CONF_SERIALCOMM:
251 serialcomm = g_variant_get_string(src->data, NULL);
258 serialcomm = SERIALCOMM_2X;
260 serial = sr_serial_dev_inst_new(conn, serialcomm);
262 if (serial_open(serial, SERIAL_RDWR) != SR_OK)
265 devc = g_malloc0(sizeof(struct dev_context));
267 sdi = g_malloc0(sizeof(struct sr_dev_inst));
268 sdi->status = SR_ST_INACTIVE;
269 sdi->vendor = g_strdup(VENDOR_GMC);
272 /* Send message 03 "Query multimeter version and status" */
274 if (req_stat14(sdi, TRUE) != SR_OK)
277 /* Wait for reply from device(s) for up to 2s. */
278 timeout_us = g_get_monotonic_time() + (2 * 1000 * 1000);
280 while (timeout_us > g_get_monotonic_time()) {
281 /* Receive reply (14 bytes) */
283 for (cnt = 0; cnt < GMC_REPLY_SIZE; cnt++) {
284 byte = read_byte(serial, timeout_us);
286 devc->buf[devc->buflen++] = (byte & MASK_6BITS);
289 if (devc->buflen != GMC_REPLY_SIZE)
292 devc->addr = devc->buf[0];
296 if (devc->model != METRAHIT_NONE) {
297 sr_spew("%s %s detected!", VENDOR_GMC, gmc_model_str(devc->model));
298 sr_sw_limits_init(&devc->limits);
299 sdi->model = g_strdup(gmc_model_str(devc->model));
300 sdi->version = g_strdup_printf("Firmware %d.%d", devc->fw_ver_maj, devc->fw_ver_min);
303 sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
304 devices = g_slist_append(devices, sdi);
305 devc = g_malloc0(sizeof(struct dev_context));
306 sdi = g_malloc0(sizeof(struct sr_dev_inst));
307 sdi->status = SR_ST_INACTIVE;
308 sdi->vendor = g_strdup(VENDOR_GMC);
312 /* Free last alloc if no device found */
313 if (devc->model == METRAHIT_NONE) {
315 sr_dev_inst_free(sdi);
318 return std_scan_complete(di, devices);
321 sr_serial_dev_inst_free(serial);
323 sr_dev_inst_free(sdi);
328 static int dev_close(struct sr_dev_inst *sdi)
330 struct dev_context *devc;
334 devc->model = METRAHIT_NONE;
336 return std_serial_dev_close(sdi);
339 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
340 const struct sr_channel_group *cg)
342 struct dev_context *devc;
352 case SR_CONF_LIMIT_SAMPLES:
353 case SR_CONF_LIMIT_MSEC:
354 return sr_sw_limits_config_get(&devc->limits, key, data);
355 case SR_CONF_POWER_OFF:
356 *data = g_variant_new_boolean(FALSE);
365 /** Implementation of config_list for Metrahit 1x/2x send mode */
366 static int config_list_sm(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
367 const struct sr_channel_group *cg)
369 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts_sm);
372 /** Implementation of config_list for Metrahit 2x bidirectional mode */
373 static int config_list_bd(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
374 const struct sr_channel_group *cg)
376 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts_bd);
379 static int dev_acquisition_start_1x_2x_rs232(const struct sr_dev_inst *sdi)
381 struct dev_context *devc;
382 struct sr_serial_dev_inst *serial;
385 devc->settings_ok = FALSE;
388 sr_sw_limits_acquisition_start(&devc->limits);
389 std_session_send_df_header(sdi);
391 /* Poll every 40ms, or whenever some data comes in. */
393 serial_source_add(sdi->session, serial, G_IO_IN, 40,
394 gmc_mh_1x_2x_receive_data, (void *)sdi);
399 static int dev_acquisition_start_2x_bd232(const struct sr_dev_inst *sdi)
401 struct dev_context *devc;
402 struct sr_serial_dev_inst *serial;
405 devc->settings_ok = FALSE;
408 sr_sw_limits_acquisition_start(&devc->limits);
409 std_session_send_df_header(sdi);
411 /* Poll every 40ms, or whenever some data comes in. */
413 serial_source_add(sdi->session, serial, G_IO_IN, 40,
414 gmc_mh_2x_receive_data, (void *)sdi);
416 /* Send start message */
417 return req_meas14(sdi);
420 static struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info = {
421 .name = "gmc-mh-1x-2x-rs232",
422 .longname = "Gossen Metrawatt Metrahit 1x/2x, RS232 interface",
425 .cleanup = std_cleanup,
426 .scan = scan_1x_2x_rs232,
427 .dev_list = std_dev_list,
428 .dev_clear = std_dev_clear,
429 .config_get = config_get,
430 .config_set = config_set,
431 .config_list = config_list_sm,
432 .dev_open = std_serial_dev_open,
433 .dev_close = dev_close,
434 .dev_acquisition_start = dev_acquisition_start_1x_2x_rs232,
435 .dev_acquisition_stop = std_serial_dev_acquisition_stop,
438 SR_REGISTER_DEV_DRIVER(gmc_mh_1x_2x_rs232_driver_info);
440 static struct sr_dev_driver gmc_mh_2x_bd232_driver_info = {
441 .name = "gmc-mh-2x-bd232",
442 .longname = "Gossen Metrawatt Metrahit 2x, BD232/SI232-II interface",
445 .cleanup = std_cleanup,
446 .scan = scan_2x_bd232,
447 .dev_list = std_dev_list,
448 .dev_clear = std_dev_clear,
449 .config_get = config_get,
450 .config_set = config_set,
451 .config_list = config_list_bd,
452 .dev_open = std_serial_dev_open,
453 .dev_close = dev_close,
454 .dev_acquisition_start = dev_acquisition_start_2x_bd232,
455 .dev_acquisition_stop = std_serial_dev_acquisition_stop,
458 SR_REGISTER_DEV_DRIVER(gmc_mh_2x_bd232_driver_info);