Function sensor_custom_register

drivers/sensors/sensor.c:1430–1519

 ****************************************************************************/

int sensor_custom_register(FAR struct sensor_lowerhalf_s *lower,
                           FAR const char *path, size_t esize)
{
  FAR struct sensor_upperhalf_s *upper;
  int ret = -EINVAL;

  DEBUGASSERT(lower != NULL);

  if (lower->type >= SENSOR_TYPE_COUNT || !esize)
    {
      snerr("ERROR: type is invalid\n");
      return ret;
    }

  /* Allocate the upper-half data structure */

  upper = kmm_zalloc(sizeof(struct sensor_upperhalf_s));
  if (!upper)
    {
      snerr("ERROR: Allocation failed\n");
      return -ENOMEM;
    }

  /* Initialize the upper-half data structure */

  list_initialize(&upper->userlist);
  upper->state.esize = esize;
  upper->state.min_interval = UINT32_MAX;
  upper->state.nonwakeup = true;
  if (lower->ops->activate)
    {
      upper->state.nadvertisers = 1;
    }

  nxrmutex_init(&upper->lock);

  /* Bind the lower half data structure member */

  lower->priv          = upper;
  lower->sensor_lock   = sensor_lock;
  lower->sensor_unlock = sensor_unlock;

  if (!lower->ops->fetch)
    {
      if (!lower->nbuffer)
        {
          lower->nbuffer = 1;
        }

      lower->push_event = sensor_push_event;
    }
  else
    {
      lower->notify_event = sensor_notify_event;
      lower->nbuffer = 0;
    }

#ifdef CONFIG_SENSORS_RPMSG