hardware/link-mso19/api.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
   5  * Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
   6  * Copyright (C) 2013 Lior Elazary <lelazary@yahoo.com>
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "protocol.h"
  23
  24 static const int hwcaps[] = {
  25         SR_HWCAP_LOGIC_ANALYZER,
  26         SR_HWCAP_SAMPLERATE,
  27         SR_HWCAP_TRIGGER_SLOPE,
  28         SR_HWCAP_HORIZ_TRIGGERPOS,
  29 //      SR_HWCAP_CAPTURE_RATIO,
  30         SR_HWCAP_LIMIT_SAMPLES,
  31 //      SR_HWCAP_RLE,
  32         0,
  33 };
  34
  35 /*
  36  * Probes are numbered 0 to 7.
  37  *
  38  * See also: http://www.linkinstruments.com/images/mso19_1113.gif
  39  */
  40 SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
  41         "0", "1", "2", "3", "4", "5", "6", "7", NULL
  42 };
  43
  44 /*supported samplerates */
  45 static const struct sr_samplerates samplerates = {
  46         SR_HZ(100),
  47         SR_MHZ(200),
  48         SR_HZ(100),
  49         NULL,
  50 };
  51
  52 SR_PRIV struct sr_dev_driver link_mso19_driver_info;
  53 static struct sr_dev_driver *di = &link_mso19_driver_info;
  54
  55 static int hw_init(struct sr_context *sr_ctx)
  56 {
  57         struct drv_context *drvc;
  58
  59         if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
  60                 sr_err("Driver context malloc failed.");
  61                 return SR_ERR_MALLOC;
  62         }
  63
  64         drvc->sr_ctx = sr_ctx;
  65         di->priv = drvc;
  66
  67         return SR_OK;
  68 }
  69
  70 static GSList *hw_scan(GSList *options)
  71 {
  72         int i;
  73         GSList *devices = NULL;
  74         const char *conn = NULL;
  75         const char *serialcomm = NULL;
  76         GSList *l;
  77         struct sr_config *src;
  78         struct udev *udev;
  79
  80         (void)options;
  81
  82         for (l = options; l; l = l->next) {
  83                 src = l->data;
  84                 switch (src->key) {
  85                 case SR_HWOPT_CONN:
  86                         conn = src->value;
  87                         break;
  88                 case SR_HWOPT_SERIALCOMM:
  89                         serialcomm = src->value;
  90                         break;
  91                 }
  92         }
  93         if (!conn)
  94                 conn = SERIALCONN;
  95         if (serialcomm == NULL)
  96                 serialcomm = SERIALCOMM;
  97
  98         udev = udev_new();
  99         if (!udev) {
 100                 sr_err("Failed to initialize udev.");
 101         }
 102
 103         struct udev_enumerate *enumerate = udev_enumerate_new(udev);
 104         udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
 105         udev_enumerate_scan_devices(enumerate);
 106         struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
 107         struct udev_list_entry *dev_list_entry;
 108         for (dev_list_entry = devs;
 109              dev_list_entry != NULL;
 110              dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
 111                 const char *syspath = udev_list_entry_get_name(dev_list_entry);
 112                 struct udev_device *dev =
 113                     udev_device_new_from_syspath(udev, syspath);
 114                 const char *sysname = udev_device_get_sysname(dev);
 115                 struct udev_device *parent =
 116                     udev_device_get_parent_with_subsystem_devtype(dev, "usb",
 117                                                                   "usb_device");
 118
 119                 if (!parent) {
 120                         sr_err("Unable to find parent usb device for %s",
 121                                sysname);
 122                         continue;
 123                 }
 124
 125                 const char *idVendor =
 126                     udev_device_get_sysattr_value(parent, "idVendor");
 127                 const char *idProduct =
 128                     udev_device_get_sysattr_value(parent, "idProduct");
 129                 if (strcmp(USB_VENDOR, idVendor)
 130                     || strcmp(USB_PRODUCT, idProduct))
 131                         continue;
 132
 133                 const char *iSerial =
 134                     udev_device_get_sysattr_value(parent, "serial");
 135                 const char *iProduct =
 136                     udev_device_get_sysattr_value(parent, "product");
 137
 138                 char path[32];
 139                 snprintf(path, sizeof(path), "/dev/%s", sysname);
 140                 conn = path;
 141
 142                 size_t s = strcspn(iProduct, " ");
 143                 char product[32];
 144                 char manufacturer[32];
 145                 if (s > sizeof(product) ||
 146                     strlen(iProduct) - s > sizeof(manufacturer)) {
 147                         sr_err("Could not parse iProduct: %s.", iProduct);
 148                         continue;
 149                 }
 150                 strncpy(product, iProduct, s);
 151                 product[s] = 0;
 152                 strcpy(manufacturer, iProduct + s + 1);
 153
 154                 //Create the device context and set its params
 155                 struct dev_context *devc;
 156                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 157                         sr_err("Device context malloc failed.");
 158                         return devices;
 159                 }
 160
 161                 if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
 162                         sr_err("Invalid iSerial: %s.", iSerial);
 163                         g_free(devc);
 164                         return devices;
 165                 }
 166
 167                 char hwrev[32];
 168                 sprintf(hwrev, "r%d", devc->hwrev);
 169                 devc->ctlbase1 = 0;
 170                 devc->protocol_trigger.spimode = 0;
 171                 for (i = 0; i < 4; i++) {
 172                         devc->protocol_trigger.word[i] = 0;
 173                         devc->protocol_trigger.mask[i] = 0xff;
 174                 }
 175
 176                 if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm))) {
 177                         g_free(devc);
 178                         return devices;
 179                 }
 180
 181                 struct sr_dev_inst *sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
 182                                                 manufacturer, product, hwrev);
 183
 184                 if (!sdi) {
 185                         sr_err("Unable to create device instance for %s",
 186                                sysname);
 187                         sr_dev_inst_free(sdi);
 188                         g_free(devc);
 189                         return devices;
 190                 }
 191
 192                 sdi->driver = di;
 193                 sdi->priv = devc;
 194
 195                 for (i = 0; i < NUM_PROBES; i++) {
 196                         struct sr_probe *probe;
 197                         if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
 198                                                    mso19_probe_names[i])))
 199                                 return 0;
 200                         sdi->probes = g_slist_append(sdi->probes, probe);
 201                 }
 202
 203                 //Add the driver
 204                 struct drv_context *drvc = di->priv;
 205                 drvc->instances = g_slist_append(drvc->instances, sdi);
 206                 devices = g_slist_append(devices, sdi);
 207         }
 208
 209         return devices;
 210 }
 211
 212 static GSList *hw_dev_list(void)
 213 {
 214         struct drv_context *drvc;
 215
 216         drvc = di->priv;
 217
 218         return drvc->instances;
 219 }
 220
 221 static int hw_dev_open(struct sr_dev_inst *sdi)
 222 {
 223         int ret;
 224         struct dev_context *devc;
 225
 226         devc = sdi->priv;
 227
 228         if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
 229                 return SR_ERR;
 230
 231         sdi->status = SR_ST_ACTIVE;
 232
 233         /* FIXME: discard serial buffer */
 234         mso_check_trigger(devc->serial, &devc->trigger_state);
 235         sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
 236
 237         ret = mso_reset_adc(sdi);
 238         if (ret != SR_OK)
 239                 return ret;
 240
 241         mso_check_trigger(devc->serial, &devc->trigger_state);
 242         sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
 243
 244         //    ret = mso_reset_fsm(sdi);
 245         //    if (ret != SR_OK)
 246         //            return ret;
 247         //    return SR_ERR;
 248
 249         return SR_OK;
 250 }
 251
 252 static int hw_dev_close(struct sr_dev_inst *sdi)
 253 {
 254         struct dev_context *devc;
 255
 256         devc = sdi->priv;
 257
 258         if (devc->serial && devc->serial->fd != -1) {
 259                 serial_close(devc->serial);
 260                 sdi->status = SR_ST_INACTIVE;
 261         }
 262
 263         return SR_OK;
 264 }
 265
 266 static int hw_cleanup(void)
 267 {
 268         GSList *l;
 269         struct sr_dev_inst *sdi;
 270         struct drv_context *drvc;
 271         struct dev_context *devc;
 272         int ret = SR_OK;
 273
 274         if (!(drvc = di->priv))
 275                 return SR_OK;
 276
 277         /* Properly close and free all devices. */
 278         for (l = drvc->instances; l; l = l->next) {
 279                 if (!(sdi = l->data)) {
 280                         /* Log error, but continue cleaning up the rest. */
 281                         sr_err("%s: sdi was NULL, continuing", __func__);
 282                         ret = SR_ERR_BUG;
 283                         continue;
 284                 }
 285                 if (!(devc = sdi->priv)) {
 286                         /* Log error, but continue cleaning up the rest. */
 287                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
 288                         ret = SR_ERR_BUG;
 289                         continue;
 290                 }
 291                 hw_dev_close(sdi);
 292                 sr_serial_dev_inst_free(devc->serial);
 293                 sr_dev_inst_free(sdi);
 294         }
 295         g_slist_free(drvc->instances);
 296         drvc->instances = NULL;
 297
 298         return ret;
 299 }
 300
 301 static int hw_info_get(int info_id, const void **data,
 302                        const struct sr_dev_inst *sdi)
 303 {
 304         struct dev_context *devc;
 305
 306         switch (info_id) {
 307         case SR_DI_HWCAPS:
 308                 *data = hwcaps;
 309                 break;
 310         case SR_DI_SAMPLERATES:
 311                 *data = &samplerates;
 312                 break;
 313         case SR_DI_TRIGGER_TYPES:
 314                 *data = (char *)TRIGGER_TYPES;
 315                 break;
 316         case SR_DI_CUR_SAMPLERATE:
 317                 if (sdi) {
 318                         devc = sdi->priv;
 319                         *data = &devc->cur_rate;
 320                 } else
 321                         return SR_ERR;
 322                 break;
 323         default:
 324                 return SR_ERR_ARG;
 325         }
 326
 327         return SR_OK;
 328 }
 329
 330 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
 331                              const void *value)
 332 {
 333         int ret;
 334         struct dev_context *devc;
 335         uint64_t num_samples, slope;
 336         int trigger_pos;
 337         float pos;
 338
 339         devc = sdi->priv;
 340
 341         if (sdi->status != SR_ST_ACTIVE)
 342                 return SR_ERR;
 343
 344         switch (hwcap) {
 345         case SR_HWCAP_SAMPLERATE:
 346                 // FIXME
 347                 return mso_configure_rate(sdi, *(const uint64_t *)value);
 348                 ret = SR_OK;
 349                 break;
 350         case SR_HWCAP_LIMIT_SAMPLES:
 351                 num_samples = *(uint64_t *)value;
 352                 if (num_samples < 1024) {
 353                         sr_err("minimum of 1024 samples required");
 354                         ret = SR_ERR_ARG;
 355                 } else {
 356                         devc->limit_samples = num_samples;
 357                         sr_dbg("setting limit_samples to %i\n",
 358                                num_samples);
 359                         ret = SR_OK;
 360                 }
 361                 break;
 362         case SR_HWCAP_CAPTURE_RATIO:
 363                 ret = SR_OK;
 364                 break;
 365         case SR_HWCAP_TRIGGER_SLOPE:
 366                 slope = *(uint64_t *)value;
 367                 if (slope != SLOPE_NEGATIVE && slope != SLOPE_POSITIVE) {
 368                         sr_err("Invalid trigger slope");
 369                         ret = SR_ERR_ARG;
 370                 } else {
 371                         devc->trigger_slope = slope;
 372                         ret = SR_OK;
 373                 }
 374                 break;
 375         case SR_HWCAP_HORIZ_TRIGGERPOS:
 376                 pos = *(float *)value;
 377                 if (pos < 0 || pos > 255) {
 378                         sr_err("Trigger position (%f) should be between 0 and 255.", pos);
 379                         ret = SR_ERR_ARG;
 380                 } else {
 381                         trigger_pos = (int)pos;
 382                         devc->trigger_holdoff[0] = trigger_pos & 0xff;
 383                         ret = SR_OK;
 384                 }
 385                 break;
 386         case SR_HWCAP_RLE:
 387                 ret = SR_OK;
 388                 break;
 389         default:
 390                 ret = SR_ERR;
 391                 break;
 392         }
 393
 394         return ret;
 395 }
 396
 397 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 398                                     void *cb_data)
 399 {
 400         struct sr_datafeed_packet *packet;
 401         struct sr_datafeed_header *header;
 402         struct dev_context *devc;
 403         int ret = SR_ERR;
 404
 405         devc = sdi->priv;
 406
 407         if (sdi->status != SR_ST_ACTIVE)
 408                 return SR_ERR;
 409
 410         if (mso_configure_probes(sdi) != SR_OK) {
 411                 sr_err("Failed to configure probes.");
 412                 return SR_ERR;
 413         }
 414
 415         /* FIXME: No need to do full reconfigure every time */
 416 //      ret = mso_reset_fsm(sdi);
 417 //      if (ret != SR_OK)
 418 //              return ret;
 419
 420         /* FIXME: ACDC Mode */
 421         devc->ctlbase1 &= 0x7f;
 422 //      devc->ctlbase1 |= devc->acdcmode;
 423
 424         ret = mso_configure_rate(sdi, devc->cur_rate);
 425         if (ret != SR_OK)
 426                 return ret;
 427
 428         /* set dac offset */
 429         ret = mso_dac_out(sdi, devc->dac_offset);
 430         if (ret != SR_OK)
 431                 return ret;
 432
 433         ret = mso_configure_threshold_level(sdi);
 434         if (ret != SR_OK)
 435                 return ret;
 436
 437         ret = mso_configure_trigger(sdi);
 438         if (ret != SR_OK)
 439                 return ret;
 440
 441         /* END of config hardware part */
 442         ret = mso_arm(sdi);
 443         if (ret != SR_OK)
 444                 return ret;
 445
 446         /* Start acquisition on the device. */
 447         mso_check_trigger(devc->serial, &devc->trigger_state);
 448         ret = mso_check_trigger(devc->serial, NULL);
 449         if (ret != SR_OK)
 450                 return ret;
 451
 452         sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data);
 453
 454         if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
 455                 sr_err("Datafeed packet malloc failed.");
 456                 return SR_ERR_MALLOC;
 457         }
 458
 459         if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) {
 460                 sr_err("Datafeed header malloc failed.");
 461                 g_free(packet);
 462                 return SR_ERR_MALLOC;
 463         }
 464
 465         packet->type = SR_DF_HEADER;
 466         packet->payload = (unsigned char *)header;
 467         header->feed_version = 1;
 468         gettimeofday(&header->starttime, NULL);
 469         sr_session_send(cb_data, packet);
 470
 471         g_free(header);
 472         g_free(packet);
 473
 474         return SR_OK;
 475 }
 476
 477 /* This stops acquisition on ALL devices, ignoring dev_index. */
 478 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 479 {
 480         (void)cb_data;
 481
 482         stop_acquisition(sdi);
 483
 484         return SR_OK;
 485 }
 486
 487 SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
 488         .name = "link-mso19",
 489         .longname = "Link Instruments MSO-19",
 490         .api_version = 1,
 491         .init = hw_init,
 492         .cleanup = hw_cleanup,
 493         .scan = hw_scan,
 494         .dev_list = hw_dev_list,
 495         .dev_clear = hw_cleanup,
 496         .dev_open = hw_dev_open,
 497         .dev_close = hw_dev_close,
 498         .info_get = hw_info_get,
 499         .dev_config_set = hw_dev_config_set,
 500         .dev_acquisition_start = hw_dev_acquisition_start,
 501         .dev_acquisition_stop = hw_dev_acquisition_stop,
 502         .priv = NULL,
 503 };