2 * This file is part of the sigrok project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
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 #include <sys/types.h>
26 #include "libsigrok.h"
27 #include "libsigrok-internal.h"
28 #include "fluke-dmm.h"
30 static const int hwopts[] = {
36 static const int hwcaps[] = {
38 SR_HWCAP_LIMIT_SAMPLES,
44 static const char *probe_names[] = {
49 SR_PRIV struct sr_dev_driver flukedmm_driver_info;
50 static struct sr_dev_driver *di = &flukedmm_driver_info;
52 static const struct flukedmm_profile supported_flukedmm[] = {
53 { FLUKE_187, "187", 100 },
54 { FLUKE_287, "287", 100 },
58 /* Properly close and free all devices. */
59 static int clear_instances(void)
61 struct sr_dev_inst *sdi;
62 struct drv_context *drvc;
63 struct dev_context *devc;
66 if (!(drvc = di->priv))
70 for (l = drvc->instances; l; l = l->next) {
73 if (!(devc = sdi->priv))
75 sr_serial_dev_inst_free(devc->serial);
76 sr_dev_inst_free(sdi);
78 g_slist_free(drvc->instances);
79 drvc->instances = NULL;
84 static int hw_init(void)
86 struct drv_context *drvc;
88 if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
89 sr_err("Driver context malloc failed.");
98 static GSList *fluke_scan(const char *conn, const char *serialcomm)
100 struct sr_dev_inst *sdi;
101 struct drv_context *drvc;
102 struct dev_context *devc;
103 struct sr_probe *probe;
104 struct sr_serial_dev_inst *serial;
106 int retry, len, i, s;
107 char buf[128], *b, **tokens;
109 if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
112 if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
119 /* We'll try the discovery sequence three times in case the device
120 * is not in an idle state when we send ID. */
121 while (!devices && retry < 3) {
123 serial_flush(serial);
124 if (serial_write(serial, "ID\r", 3) == -1) {
125 sr_err("Unable to send ID string: %s.",
130 /* Response is first a CMD_ACK byte (ASCII '0' for OK,
131 * or '1' to signify an error. */
133 serial_readline(serial, &b, &len, 150);
139 /* If CMD_ACK was OK, ID string follows. */
141 serial_readline(serial, &b, &len, 150);
144 tokens = g_strsplit(buf, ",", 3);
145 if (!strncmp("FLUKE", tokens[0], 5)
146 && tokens[1] && tokens[2]) {
147 for (i = 0; supported_flukedmm[i].model; i++) {
148 if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6))
150 /* Skip leading spaces in version number. */
151 for (s = 0; tokens[1][s] == ' '; s++);
152 if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke",
153 tokens[0] + 6, tokens[1] + s)))
155 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
156 sr_err("Device context malloc failed.");
159 devc->profile = &supported_flukedmm[i];
160 devc->serial = serial;
163 if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
165 sdi->probes = g_slist_append(sdi->probes, probe);
166 drvc->instances = g_slist_append(drvc->instances, sdi);
167 devices = g_slist_append(devices, sdi);
173 serial_close(serial);
175 sr_serial_dev_inst_free(serial);
180 static GSList *hw_scan(GSList *options)
182 struct sr_hwopt *opt;
184 const char *conn, *serialcomm;
186 conn = serialcomm = NULL;
187 for (l = options; l; l = l->next) {
189 switch (opt->hwopt) {
193 case SR_HWOPT_SERIALCOMM:
194 serialcomm = opt->value;
202 /* Use the provided comm specs. */
203 devices = fluke_scan(conn, serialcomm);
205 /* Try 115200, as used on 287/289. */
206 devices = fluke_scan(conn, "115200/8n1");
208 /* Fall back to 9600 for 187/189. */
209 devices = fluke_scan(conn, "9600/8n1");
215 static GSList *hw_dev_list(void)
217 struct drv_context *drvc;
221 return drvc->instances;
224 static int hw_dev_open(struct sr_dev_inst *sdi)
226 struct dev_context *devc;
228 if (!(devc = sdi->priv)) {
229 sr_err("sdi->priv was NULL.");
233 if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
236 sdi->status = SR_ST_ACTIVE;
241 static int hw_dev_close(struct sr_dev_inst *sdi)
243 struct dev_context *devc;
245 if (!(devc = sdi->priv)) {
246 sr_err("sdi->priv was NULL.");
250 if (devc->serial && devc->serial->fd != -1) {
251 serial_close(devc->serial);
252 sdi->status = SR_ST_INACTIVE;
258 static int hw_cleanup(void)
266 static int hw_info_get(int info_id, const void **data,
267 const struct sr_dev_inst *sdi)
279 case SR_DI_NUM_PROBES:
280 *data = GINT_TO_POINTER(1);
282 case SR_DI_PROBE_NAMES:
292 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
295 struct dev_context *devc;
297 if (sdi->status != SR_ST_ACTIVE)
300 if (!(devc = sdi->priv)) {
301 sr_err("sdi->priv was NULL.");
306 case SR_HWCAP_LIMIT_MSEC:
307 /* TODO: not yet implemented */
308 if (*(const uint64_t *)value == 0) {
309 sr_err("LIMIT_MSEC can't be 0.");
312 devc->limit_msec = *(const uint64_t *)value;
313 sr_dbg("Setting time limit to %" PRIu64 "ms.",
316 case SR_HWCAP_LIMIT_SAMPLES:
317 devc->limit_samples = *(const uint64_t *)value;
318 sr_dbg("Setting sample limit to %" PRIu64 ".",
319 devc->limit_samples);
322 sr_err("Unknown capability: %d.", hwcap);
330 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
333 struct sr_datafeed_packet packet;
334 struct sr_datafeed_header header;
335 struct sr_datafeed_meta_analog meta;
336 struct dev_context *devc;
338 if (!(devc = sdi->priv)) {
339 sr_err("sdi->priv was NULL.");
343 sr_dbg("Starting acquisition.");
345 devc->cb_data = cb_data;
347 /* Send header packet to the session bus. */
348 sr_dbg("Sending SR_DF_HEADER.");
349 packet.type = SR_DF_HEADER;
350 packet.payload = (uint8_t *)&header;
351 header.feed_version = 1;
352 gettimeofday(&header.starttime, NULL);
353 sr_session_send(devc->cb_data, &packet);
355 /* Send metadata about the SR_DF_ANALOG packets to come. */
356 sr_dbg("Sending SR_DF_META_ANALOG.");
357 packet.type = SR_DF_META_ANALOG;
358 packet.payload = &meta;
360 sr_session_send(devc->cb_data, &packet);
362 /* Poll every 100ms, or whenever some data comes in. */
363 sr_source_add(devc->serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi);
365 if (serial_write(devc->serial, "QM\r", 3) == -1) {
366 sr_err("Unable to send QM: %s.", strerror(errno));
369 devc->cmd_sent_at = g_get_monotonic_time() / 1000;
370 devc->expect_response = TRUE;
375 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
377 struct sr_datafeed_packet packet;
378 struct dev_context *devc;
380 if (sdi->status != SR_ST_ACTIVE)
383 if (!(devc = sdi->priv)) {
384 sr_err("sdi->priv was NULL.");
388 sr_dbg("Stopping acquisition.");
390 sr_source_remove(devc->serial->fd);
391 hw_dev_close((struct sr_dev_inst *)sdi);
393 /* Send end packet to the session bus. */
394 sr_dbg("Sending SR_DF_END.");
395 packet.type = SR_DF_END;
396 sr_session_send(cb_data, &packet);
401 SR_PRIV struct sr_dev_driver flukedmm_driver_info = {
403 .longname = "Fluke 18x/28x series DMMs",
406 .cleanup = hw_cleanup,
408 .dev_list = hw_dev_list,
409 .dev_clear = clear_instances,
410 .dev_open = hw_dev_open,
411 .dev_close = hw_dev_close,
412 .info_get = hw_info_get,
413 .dev_config_set = hw_dev_config_set,
414 .dev_acquisition_start = hw_dev_acquisition_start,
415 .dev_acquisition_stop = hw_dev_acquisition_stop,