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int HAMLIB_API rig_get_ctcss_tone ( RIG rig,
vfo_t  vfo,
tone_t tone 

get the current CTCSS sub-tone frequency

rig The rig handle
vfo The target VFO
tone The location where to store the current tone
Retrieves the current Continuous Tone Controlled Squelch System (CTCSS) sub-audible tone frequency.
the *tone integer is NOT in Hz, but in tenth of Hz! This way, if the function rig_get_ctcss_tone() returns a subaudible tone of 885 for example, then the real tone is 88.5 Hz. Also, a value of 0 for *tone means the Tone encoding is disabled.
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_set_ctcss_tone(), rig_get_ctcss_sql()

Definition at line 143 of file tones.c.

References caps, rig_state::current_vfo, rig_caps::get_ctcss_tone, RIG_EINVAL, RIG_ENAVAIL, RIG_ENTARGET, RIG_OK, RIG_VFO_CURR, rig_caps::set_vfo, state, and rig_caps::targetable_vfo.

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

      if (CHECK_RIG_ARG(rig) || !tone)
            return -RIG_EINVAL;

      caps = rig->caps;

      if (caps->get_ctcss_tone == NULL)
            return -RIG_ENAVAIL;

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

      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->get_ctcss_tone(rig, vfo, tone);
      caps->set_vfo(rig, curr_vfo);
      return retcode;

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