Function rot_open

src/rotator.c:368–588

* \brief Open the communication channel to the rotator. * * \param rot The #ROT handle of the rotator to be opened. * * Opens the communication channel to a rotator for which the #ROT handle has * been passed. * * \return RIG_OK if the operation has been successful, otherwise a **negative * value** if an error occurred (in which case, cause is set appropriately). * * \retval RIG_OK Commu

 * \sa rot_init(), rot_close()
 */
int HAMLIB_API rot_open(ROT *rot)
{
    const struct rot_caps *caps;
    struct rot_state *rs;
    hamlib_port_t *rotp = ROTPORT(rot);
    hamlib_port_t *rotp2 = ROTPORT2(rot);
    int status;
    int net1, net2, net3, net4, port;
    deferred_config_item_t *item;

    rot_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);

    if (!rot || !rot->caps)
    {
        return -RIG_EINVAL;
    }

    caps = rot->caps;
    rs = ROTSTATE(rot);

    if (rs->comm_state)
    {
        return -RIG_EINVAL;
    }

    rotp->fd = -1;
    rotp2->fd = -1;

    // determine if we have a network address
    if (sscanf(rotp->pathname, "%d.%d.%d.%d:%d", &net1, &net2, &net3, &net4,
               &port) == 5)
    {
        char *type = "TCP";

        if (rot->caps->port_type == RIG_PORT_UDP_NETWORK)
        {
            rotp->type.rig = RIG_PORT_UDP_NETWORK;
            type = "UDP";
        }
        else
        {
            rotp->type.rig = RIG_PORT_NETWORK;
        }

        rig_debug(RIG_DEBUG_TRACE, "%s: using network address %s:%s\n", __func__,
                  rotp->pathname, type);
    }

    if (sscanf(rotp2->pathname, "%d.%d.%d.%d:%d", &net1, &net2, &net3, &net4,
               &port) == 5)
    {
        rig_debug(RIG_DEBUG_TRACE, "%s: using network address %s\n", __func__,
                  rotp2->pathname);

        if (rot->caps->port_type == RIG_PORT_UDP_NETWORK)
        {
            rotp->type.rig = RIG_PORT_UDP_NETWORK;
        }