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int HAMLIB_API rig_scan ( RIG rig,
vfo_t  vfo,
scan_t  scan,
int  ch 
)

perform Memory/VFO operations

Parameters:
rigThe rig handle
vfoThe target VFO
scanThe scanning operation to perform
chOptional channel argument used for the scan.

Performs scanning operation. See scan_t for more information.

Returns:
RIG_OK if the operation has been sucessful, otherwise a negative value if an error occured (in which case, cause is set appropriately).
See also:
rig_has_scan()

Definition at line 2552 of file rig.c.

References caps, rig_state::current_vfo, RIG_EINVAL, RIG_ENAVAIL, RIG_ENTARGET, rig_has_scan(), RIG_OK, RIG_SCAN_STOP, RIG_VFO_CURR, state, and rig_caps::targetable_vfo.

{
      const struct rig_caps *caps;
      int retcode;
      vfo_t curr_vfo;

      if (CHECK_RIG_ARG(rig))
            return -RIG_EINVAL;

      caps = rig->caps;

      if (caps->scan == NULL || 
                  (scan!=RIG_SCAN_STOP && !rig_has_scan(rig, scan)))
            return -RIG_ENAVAIL;

      if ((caps->targetable_vfo&RIG_TARGETABLE_PURE) ||
                  vfo == RIG_VFO_CURR || vfo == rig->state.current_vfo)
            return caps->scan(rig, vfo, scan, ch);

      if (!caps->set_vfo)
            return -RIG_ENTARGET;
      curr_vfo = rig->state.current_vfo;
      retcode = caps->set_vfo(rig, vfo);
      if (retcode != RIG_OK)
            return retcode;

      retcode = caps->scan(rig, vfo, scan, ch);
      caps->set_vfo(rig, curr_vfo);
      return retcode;
}

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