src/hardware/link-mso19/api.c

   1 /*
   2  * This file is part of the libsigrok 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 uint32_t devopts[] = {
  25         SR_CONF_OSCILLOSCOPE,
  26         SR_CONF_LOGIC_ANALYZER,
  27         SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
  28         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  29         SR_CONF_TRIGGER_TYPE | SR_CONF_LIST,
  30         SR_CONF_TRIGGER_SLOPE | SR_CONF_SET,
  31         SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_SET,
  32         SR_CONF_CAPTURE_RATIO | SR_CONF_SET,
  33         SR_CONF_RLE | SR_CONF_SET,
  34 };
  35
  36 /*
  37  * Channels are numbered 0 to 7.
  38  *
  39  * See also: http://www.linkinstruments.com/images/mso19_1113.gif
  40  */
  41 SR_PRIV const char *mso19_channel_names[] = {
  42         /* Note: DSO needs to be first. */
  43         "DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
  44 };
  45
  46 static const uint64_t samplerates[] = {
  47         SR_HZ(100),
  48         SR_MHZ(200),
  49         SR_HZ(100),
  50 };
  51
  52 SR_PRIV struct sr_dev_driver link_mso19_driver_info;
  53
  54 /* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */
  55 static int dev_clear(const struct sr_dev_driver *di)
  56 {
  57         GSList *l;
  58         struct sr_dev_inst *sdi;
  59         struct drv_context *drvc;
  60         struct dev_context *devc;
  61         int ret = SR_OK;
  62
  63         if (!(drvc = di->priv))
  64                 return SR_OK;
  65
  66         /* Properly close and free all devices. */
  67         for (l = drvc->instances; l; l = l->next) {
  68                 if (!(sdi = l->data)) {
  69                         /* Log error, but continue cleaning up the rest. */
  70                         sr_err("%s: sdi was NULL, continuing", __func__);
  71                         ret = SR_ERR_BUG;
  72                         continue;
  73                 }
  74                 if (!(devc = sdi->priv)) {
  75                         /* Log error, but continue cleaning up the rest. */
  76                         sr_err("%s: sdi->priv was NULL, continuing", __func__);
  77                         ret = SR_ERR_BUG;
  78                         continue;
  79                 }
  80                 std_serial_dev_close(sdi);
  81                 sr_serial_dev_inst_free(devc->serial);
  82                 sr_dev_inst_free(sdi);
  83         }
  84         g_slist_free(drvc->instances);
  85         drvc->instances = NULL;
  86
  87         return ret;
  88 }
  89
  90 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
  91 {
  92         return std_init(sr_ctx, di, LOG_PREFIX);
  93 }
  94
  95 static GSList *scan(struct sr_dev_driver *di, GSList *options)
  96 {
  97         int i;
  98         GSList *devices = NULL;
  99         const char *conn = NULL;
 100         const char *serialcomm = NULL;
 101         GSList *l;
 102         struct sr_config *src;
 103         struct udev *udev;
 104         int chtype;
 105
 106         for (l = options; l; l = l->next) {
 107                 src = l->data;
 108                 switch (src->key) {
 109                 case SR_CONF_CONN:
 110                         conn = g_variant_get_string(src->data, NULL);
 111                         break;
 112                 case SR_CONF_SERIALCOMM:
 113                         serialcomm = g_variant_get_string(src->data, NULL);
 114                         break;
 115                 }
 116         }
 117         if (!conn)
 118                 conn = SERIALCONN;
 119         if (serialcomm == NULL)
 120                 serialcomm = SERIALCOMM;
 121
 122         udev = udev_new();
 123         if (!udev) {
 124                 sr_err("Failed to initialize udev.");
 125         }
 126
 127         struct udev_enumerate *enumerate = udev_enumerate_new(udev);
 128         udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
 129         udev_enumerate_scan_devices(enumerate);
 130         struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
 131         struct udev_list_entry *dev_list_entry;
 132         for (dev_list_entry = devs;
 133              dev_list_entry != NULL;
 134              dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
 135                 const char *syspath = udev_list_entry_get_name(dev_list_entry);
 136                 struct udev_device *dev =
 137                     udev_device_new_from_syspath(udev, syspath);
 138                 const char *sysname = udev_device_get_sysname(dev);
 139                 struct udev_device *parent =
 140                     udev_device_get_parent_with_subsystem_devtype(dev, "usb",
 141                                                                   "usb_device");
 142
 143                 if (!parent) {
 144                         sr_err("Unable to find parent usb device for %s",
 145                                sysname);
 146                         continue;
 147                 }
 148
 149                 const char *idVendor =
 150                     udev_device_get_sysattr_value(parent, "idVendor");
 151                 const char *idProduct =
 152                     udev_device_get_sysattr_value(parent, "idProduct");
 153                 if (strcmp(USB_VENDOR, idVendor)
 154                     || strcmp(USB_PRODUCT, idProduct))
 155                         continue;
 156
 157                 const char *iSerial =
 158                     udev_device_get_sysattr_value(parent, "serial");
 159                 const char *iProduct =
 160                     udev_device_get_sysattr_value(parent, "product");
 161
 162                 char path[32];
 163                 snprintf(path, sizeof(path), "/dev/%s", sysname);
 164                 conn = path;
 165
 166                 size_t s = strcspn(iProduct, " ");
 167                 char product[32];
 168                 char manufacturer[32];
 169                 if (s > sizeof(product) ||
 170                     strlen(iProduct) - s > sizeof(manufacturer)) {
 171                         sr_err("Could not parse iProduct: %s.", iProduct);
 172                         continue;
 173                 }
 174                 strncpy(product, iProduct, s);
 175                 product[s] = 0;
 176                 strcpy(manufacturer, iProduct + s + 1);
 177
 178                 //Create the device context and set its params
 179                 struct dev_context *devc;
 180                 devc = g_malloc0(sizeof(struct dev_context));
 181
 182                 if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
 183                         sr_err("Invalid iSerial: %s.", iSerial);
 184                         g_free(devc);
 185                         return devices;
 186                 }
 187
 188                 char hwrev[32];
 189                 sprintf(hwrev, "r%d", devc->hwrev);
 190                 devc->ctlbase1 = 0;
 191                 devc->protocol_trigger.spimode = 0;
 192                 for (i = 0; i < 4; i++) {
 193                         devc->protocol_trigger.word[i] = 0;
 194                         devc->protocol_trigger.mask[i] = 0xff;
 195                 }
 196
 197                 devc->serial = sr_serial_dev_inst_new(conn, serialcomm);
 198
 199                 struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
 200                 sdi->status = SR_ST_INACTIVE;
 201                 sdi->vendor = g_strdup(manufacturer);
 202                 sdi->model = g_strdup(product);
 203                 sdi->version = g_strdup(hwrev);
 204
 205                 if (!sdi) {
 206                         sr_err("Unable to create device instance for %s",
 207                                sysname);
 208                         sr_dev_inst_free(sdi);
 209                         g_free(devc);
 210                         return devices;
 211                 }
 212
 213                 sdi->driver = di;
 214                 sdi->priv = devc;
 215
 216                 for (i = 0; i < NUM_CHANNELS; i++) {
 217                         chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
 218                         sr_channel_new(sdi, i, chtype, TRUE,
 219                                             mso19_channel_names[i]);
 220                 }
 221
 222                 //Add the driver
 223                 struct drv_context *drvc = di->priv;
 224                 drvc->instances = g_slist_append(drvc->instances, sdi);
 225                 devices = g_slist_append(devices, sdi);
 226         }
 227
 228         return devices;
 229 }
 230
 231 static GSList *dev_list(const struct sr_dev_driver *di)
 232 {
 233         return ((struct drv_context *)(di->priv))->instances;
 234 }
 235
 236 static int dev_open(struct sr_dev_inst *sdi)
 237 {
 238         int ret;
 239         struct dev_context *devc;
 240
 241         devc = sdi->priv;
 242
 243         if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
 244                 return SR_ERR;
 245
 246         sdi->status = SR_ST_ACTIVE;
 247
 248         /* FIXME: discard serial buffer */
 249         mso_check_trigger(devc->serial, &devc->trigger_state);
 250         sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
 251
 252         ret = mso_reset_adc(sdi);
 253         if (ret != SR_OK)
 254                 return ret;
 255
 256         mso_check_trigger(devc->serial, &devc->trigger_state);
 257         sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
 258
 259         //    ret = mso_reset_fsm(sdi);
 260         //    if (ret != SR_OK)
 261         //            return ret;
 262         //    return SR_ERR;
 263
 264         return SR_OK;
 265 }
 266
 267 static int cleanup(const struct sr_dev_driver *di)
 268 {
 269         return dev_clear();
 270 }
 271
 272 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
 273                 const struct sr_channel_group *cg)
 274 {
 275         struct dev_context *devc;
 276
 277         (void)cg;
 278
 279         switch (id) {
 280         case SR_CONF_SAMPLERATE:
 281                 if (sdi) {
 282                         devc = sdi->priv;
 283                         *data = g_variant_new_uint64(devc->cur_rate);
 284                 } else
 285                         return SR_ERR;
 286                 break;
 287         default:
 288                 return SR_ERR_NA;
 289         }
 290
 291         return SR_OK;
 292 }
 293
 294 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
 295                 const struct sr_channel_group *cg)
 296 {
 297         int ret;
 298         struct dev_context *devc;
 299         uint64_t num_samples;
 300         const char *slope;
 301         int trigger_pos;
 302         double pos;
 303
 304         (void)cg;
 305         devc = sdi->priv;
 306
 307         if (sdi->status != SR_ST_ACTIVE)
 308                 return SR_ERR_DEV_CLOSED;
 309
 310         switch (id) {
 311         case SR_CONF_SAMPLERATE:
 312                 // FIXME
 313                 return mso_configure_rate(sdi, g_variant_get_uint64(data));
 314                 ret = SR_OK;
 315                 break;
 316         case SR_CONF_LIMIT_SAMPLES:
 317                 num_samples = g_variant_get_uint64(data);
 318                 if (num_samples != 1024) {
 319                         sr_err("Only 1024 samples are supported.");
 320                         ret = SR_ERR_ARG;
 321                 } else {
 322                         devc->limit_samples = num_samples;
 323                         ret = SR_OK;
 324                 }
 325                 break;
 326         case SR_CONF_CAPTURE_RATIO:
 327                 ret = SR_OK;
 328                 break;
 329         case SR_CONF_TRIGGER_SLOPE:
 330                 slope = g_variant_get_string(data, NULL);
 331
 332                 if (!slope || !(slope[0] == 'f' || slope[0] == 'r'))
 333                         sr_err("Invalid trigger slope");
 334                         ret = SR_ERR_ARG;
 335                 } else {
 336                         devc->trigger_slope = (slope[0] == 'r')
 337                                 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
 338                         ret = SR_OK;
 339                 }
 340                 break;
 341         case SR_CONF_HORIZ_TRIGGERPOS:
 342                 pos = g_variant_get_double(data);
 343                 if (pos < 0 || pos > 255) {
 344                         sr_err("Trigger position (%f) should be between 0 and 255.", pos);
 345                         ret = SR_ERR_ARG;
 346                 } else {
 347                         trigger_pos = (int)pos;
 348                         devc->trigger_holdoff[0] = trigger_pos & 0xff;
 349                         ret = SR_OK;
 350                 }
 351                 break;
 352         case SR_CONF_RLE:
 353                 ret = SR_OK;
 354                 break;
 355         default:
 356                 ret = SR_ERR_NA;
 357                 break;
 358         }
 359
 360         return ret;
 361 }
 362
 363 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
 364                 const struct sr_channel_group *cg)
 365 {
 366         GVariant *gvar;
 367         GVariantBuilder gvb;
 368
 369         (void)cg;
 370         (void)sdi;
 371
 372         switch (key) {
 373         case SR_CONF_DEVICE_OPTIONS:
 374                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 375                                 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 376                 break;
 377         case SR_CONF_SAMPLERATE:
 378                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 379                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
 380                                 ARRAY_SIZE(samplerates), sizeof(uint64_t));
 381                 g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
 382                 *data = g_variant_builder_end(&gvb);
 383                 break;
 384         case SR_CONF_TRIGGER_TYPE:
 385                 *data = g_variant_new_string(TRIGGER_TYPE);
 386                 break;
 387         default:
 388                 return SR_ERR_NA;
 389         }
 390
 391         return SR_OK;
 392 }
 393
 394 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 395 {
 396         struct dev_context *devc;
 397         int ret = SR_ERR;
 398
 399         if (sdi->status != SR_ST_ACTIVE)
 400                 return SR_ERR_DEV_CLOSED;
 401
 402         devc = sdi->priv;
 403
 404         if (mso_configure_channels(sdi) != SR_OK) {
 405                 sr_err("Failed to configure channels.");
 406                 return SR_ERR;
 407         }
 408
 409         /* FIXME: No need to do full reconfigure every time */
 410 //      ret = mso_reset_fsm(sdi);
 411 //      if (ret != SR_OK)
 412 //              return ret;
 413
 414         /* FIXME: ACDC Mode */
 415         devc->ctlbase1 &= 0x7f;
 416 //      devc->ctlbase1 |= devc->acdcmode;
 417
 418         ret = mso_configure_rate(sdi, devc->cur_rate);
 419         if (ret != SR_OK)
 420                 return ret;
 421
 422         /* set dac offset */
 423         ret = mso_dac_out(sdi, devc->dac_offset);
 424         if (ret != SR_OK)
 425                 return ret;
 426
 427         ret = mso_configure_threshold_level(sdi);
 428         if (ret != SR_OK)
 429                 return ret;
 430
 431         ret = mso_configure_trigger(sdi);
 432         if (ret != SR_OK)
 433                 return ret;
 434
 435         /* END of config hardware part */
 436         ret = mso_arm(sdi);
 437         if (ret != SR_OK)
 438                 return ret;
 439
 440         /* Start acquisition on the device. */
 441         mso_check_trigger(devc->serial, &devc->trigger_state);
 442         ret = mso_check_trigger(devc->serial, NULL);
 443         if (ret != SR_OK)
 444                 return ret;
 445
 446         /* Reset trigger state. */
 447         devc->trigger_state = 0x00;
 448
 449         /* Send header packet to the session bus. */
 450         std_session_send_df_header(cb_data, LOG_PREFIX);
 451
 452         /* Our first channel is analog, the other 8 are of type 'logic'. */
 453         /* TODO. */
 454
 455         serial_source_add(sdi->session, devc->serial, G_IO_IN, -1,
 456                         mso_receive_data, cb_data);
 457
 458         return SR_OK;
 459 }
 460
 461 /* This stops acquisition on ALL devices, ignoring dev_index. */
 462 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 463 {
 464         (void)cb_data;
 465
 466         stop_acquisition(sdi);
 467
 468         return SR_OK;
 469 }
 470
 471 SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
 472         .name = "link-mso19",
 473         .longname = "Link Instruments MSO-19",
 474         .api_version = 1,
 475         .init = init,
 476         .cleanup = cleanup,
 477         .scan = scan,
 478         .dev_list = dev_list,
 479         .dev_clear = dev_clear,
 480         .config_get = config_get,
 481         .config_set = config_set,
 482         .config_list = config_list,
 483         .dev_open = dev_open,
 484         .dev_close = std_serial_dev_close,
 485         .dev_acquisition_start = dev_acquisition_start,
 486         .dev_acquisition_stop = dev_acquisition_stop,
 487         .priv = NULL,
 488 };