Function par_ptt_set

src/parallel.c:623–671

* \brief Set or unset Push to talk bit on Parallel Port * \param p * \param pttx RIG_PTT_ON --> Set PTT * \return RIG_OK or < 0 error */

 * \return RIG_OK or < 0 error
 */
int par_ptt_set(hamlib_port_t *p, ptt_t pttx)
{
    rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);

    switch (p->type.ptt)
    {
    case RIG_PTT_PARALLEL:
    {
        unsigned char ctl;
        int status;

        par_lock(p);
        status = par_read_control(p, &ctl);

        if (status != RIG_OK)
        {
            return status;
        }

        /* Enable CW & PTT - /STROBE bit (pin 1) */
        ctl &= ~PARPORT_CONTROL_STROBE;

        /* TODO: kill parm.parallel.pin? */

        /* PTT keying - /INIT bit (pin 16) (inverted) */
        if (pttx == RIG_PTT_ON)
        {
            ctl |= PARPORT_CONTROL_INIT;
        }
        else
        {
            ctl &= ~PARPORT_CONTROL_INIT;
        }

        status = par_write_control(p, ctl);
        par_unlock(p);
        return status;
    }

    default:
        rig_debug(RIG_DEBUG_ERR,
                  "%s: unsupported PTT type %d\n",
                  __func__,
                  p->type.ptt);
        return -RIG_EINVAL;
    }

    return RIG_OK;
}


/**