2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
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/>.
25 #include "libsigrok.h"
26 #include "libsigrok-internal.h"
29 static const int hwcaps[] = {
31 SR_CONF_LIMIT_SAMPLES,
33 SR_CONF_TRIGGER_SOURCE,
34 SR_CONF_TRIGGER_SLOPE,
35 SR_CONF_HORIZ_TRIGGERPOS,
41 static const struct sr_rational timebases[] = {
80 static const struct sr_rational vdivs[] = {
98 static const char *trigger_sources[] = {
106 static const char *coupling[] = {
113 static const char *supported_models[] = {
120 SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
121 static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info;
123 /* Properly close and free all devices. */
124 static int clear_instances(void)
126 struct sr_dev_inst *sdi;
127 struct drv_context *drvc;
128 struct dev_context *devc;
131 if (!(drvc = di->priv))
134 for (l = drvc->instances; l; l = l->next) {
135 if (!(sdi = l->data))
137 if (!(devc = sdi->priv))
140 g_free(devc->device);
141 g_slist_free(devc->enabled_probes);
144 sr_dev_inst_free(sdi);
147 g_slist_free(drvc->instances);
148 drvc->instances = NULL;
153 static int hw_init(struct sr_context *sr_ctx)
155 return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
158 static GSList *hw_scan(GSList *options)
160 struct drv_context *drvc;
161 struct sr_dev_inst *sdi;
162 struct dev_context *devc;
163 struct sr_probe *probe;
166 const gchar *dev_name;
167 const gchar *dev_dir = "/dev/";
168 const gchar *prefix = "usbtmc";
170 const gchar *idn_query = "*IDN?";
171 int len, num_tokens, fd, i;
172 const gchar *delimiter = ",";
174 const char *manufacturer, *model, *version;
176 gboolean matched = FALSE;
182 drvc->instances = NULL;
186 dir = g_dir_open("/sys/class/usb/", 0, NULL);
191 while ((dev_name = g_dir_read_name(dir)) != NULL) {
192 if (strncmp(dev_name, prefix, strlen(prefix)))
195 device = g_strconcat(dev_dir, dev_name, NULL);
197 fd = open(device, O_RDWR);
198 len = write(fd, idn_query, strlen(idn_query));
199 len = read(fd, buf, sizeof(buf));
207 tokens = g_strsplit(buf, delimiter, 0);
209 sr_dbg("response: %s %d [%s]", device, len, buf);
211 for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
213 if (num_tokens < 4) {
219 manufacturer = tokens[0];
223 if (strcmp(manufacturer, "Rigol Technologies")) {
229 num_models = sizeof(supported_models) / sizeof(supported_models[0]);
231 for (i = 0; i < num_models; i++) {
232 if (!strcmp(model, supported_models[i])) {
238 if (!matched || !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
239 manufacturer, model, version))) {
247 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
248 sr_err("Device context malloc failed.");
253 devc->device = device;
258 for (i = 0; i < 2; i++) {
259 if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE,
260 i == 0 ? "CH1" : "CH2")))
262 sdi->probes = g_slist_append(sdi->probes, probe);
265 drvc->instances = g_slist_append(drvc->instances, sdi);
266 devices = g_slist_append(devices, sdi);
274 static GSList *hw_dev_list(void)
276 return ((struct drv_context *)(di->priv))->instances;
279 static int hw_dev_open(struct sr_dev_inst *sdi)
281 struct dev_context *devc;
286 if ((fd = open(devc->device, O_RDWR)) == -1)
296 static int hw_dev_close(struct sr_dev_inst *sdi)
298 struct dev_context *devc;
307 static int hw_cleanup(void)
314 static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
316 struct dev_context *devc;
319 struct sr_rational tmp_rat;
325 if (sdi->status != SR_ST_ACTIVE) {
326 sr_err("Device inactive, can't set config options.");
332 case SR_CONF_LIMIT_FRAMES:
333 devc->limit_frames = *(const uint64_t *)value;
335 case SR_CONF_TRIGGER_SLOPE:
336 tmp_u64 = *(const int *)value;
337 rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n",
338 tmp_u64 ? "POS" : "NEG");
340 case SR_CONF_HORIZ_TRIGGERPOS:
341 tmp_float = *(const float *)value;
342 rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_float);
344 case SR_CONF_TIMEBASE:
345 tmp_rat = *(const struct sr_rational *)value;
346 rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n",
347 (float)tmp_rat.p / tmp_rat.q);
349 case SR_CONF_TRIGGER_SOURCE:
350 if (!strcmp(value, "CH1"))
352 else if (!strcmp(value, "CH2"))
354 else if (!strcmp(value, "EXT"))
356 else if (!strcmp(value, "AC Line"))
362 rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SOUR %s\n", channel);
365 /* TODO: Not supporting vdiv per channel yet. */
366 tmp_rat = *(const struct sr_rational *)value;
367 for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
368 if (vdivs[i].p == tmp_rat.p
369 && vdivs[i].q == tmp_rat.q) {
370 devc->scale = (float)tmp_rat.p / tmp_rat.q;
371 for (j = 0; j < 2; j++)
372 rigol_ds1xx2_send_data(devc->fd,
373 ":CHAN%d:SCAL %.3f\n", j, devc->scale);
377 if (vdivs[i].p == 0 && vdivs[i].q == 0)
380 case SR_CONF_COUPLING:
381 /* TODO: Not supporting coupling per channel yet. */
382 for (i = 0; coupling[i]; i++) {
383 if (!strcmp(value, coupling[i])) {
384 for (j = 0; j < 2; j++)
385 rigol_ds1xx2_send_data(devc->fd,
386 ":CHAN%d:COUP %s\n", j, coupling[i]);
390 if (coupling[i] == 0)
394 sr_err("Unknown hardware capability: %d.", id);
402 static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
408 case SR_CONF_DEVICE_OPTIONS:
411 case SR_CONF_COUPLING:
417 case SR_CONF_TIMEBASE:
420 case SR_CONF_TRIGGER_SOURCE:
421 *data = trigger_sources;
430 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
433 struct dev_context *devc;
441 devc->num_frames = 0;
443 sr_source_add(devc->fd, G_IO_IN, 50, rigol_ds1xx2_receive_data, (void *)sdi);
445 /* Send header packet to the session bus. */
446 std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
448 /* Hardcoded to CH1 only. */
449 devc->enabled_probes = g_slist_append(NULL, sdi->probes->data);
450 rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL?\n");
451 len = read(devc->fd, buf, sizeof(buf));
453 devc->scale = atof(buf);
454 sr_dbg("Scale is %.3f.", devc->scale);
455 rigol_ds1xx2_send_data(devc->fd, ":CHAN1:OFFS?\n");
456 len = read(devc->fd, buf, sizeof(buf));
458 devc->offset = atof(buf);
459 sr_dbg("Offset is %.6f.", devc->offset);
460 rigol_ds1xx2_send_data(devc->fd, ":WAV:DATA?\n");
465 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
467 struct dev_context *devc;
473 if (sdi->status != SR_ST_ACTIVE) {
474 sr_err("Device inactive, can't stop acquisition.");
478 sr_source_remove(devc->fd);
483 SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = {
484 .name = "rigol-ds1xx2",
485 .longname = "Rigol DS1xx2",
488 .cleanup = hw_cleanup,
490 .dev_list = hw_dev_list,
491 .dev_clear = clear_instances,
493 .config_set = config_set,
494 .config_list = config_list,
495 .dev_open = hw_dev_open,
496 .dev_close = hw_dev_close,
497 .dev_acquisition_start = hw_dev_acquisition_start,
498 .dev_acquisition_stop = hw_dev_acquisition_stop,