Function par_read_data

src/parallel.c:279–327

* \brief Receive data on Parallel port * \param port * \param data */

 * \param data
 */
int HAMLIB_API par_read_data(hamlib_port_t *port, unsigned char *data)
{
#ifdef HAVE_LINUX_PPDEV_H
    int status;
    rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);

    status = ioctl(port->fd, PPRDATA, data);
    return status == 0 ? RIG_OK : -RIG_EIO;
#elif defined(HAVE_DEV_PPBUS_PPI_H)
    int status;
    rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);

    status = ioctl(port->fd, PPIGDATA, &data);
    return status == 0 ? RIG_OK : -RIG_EIO;
#elif defined(__WIN64__) || defined(__WIN32__)
    unsigned char ret = 0;
    unsigned int dummy = 0;

    intptr_t handle;

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

    handle = _get_osfhandle(port->fd);

    if (handle != (intptr_t)INVALID_HANDLE_VALUE)
    {
        if (!(DeviceIoControl((HANDLE)handle,
                              NT_IOCTL_STATUS,
                              NULL,
                              0,
                              &ret,
                              sizeof(ret),
                              (LPDWORD)&dummy,
                              NULL)))
        {
            rig_debug(RIG_DEBUG_ERR,
                      "%s: DeviceIoControl failed!\n",
                      __func__);

            return -RIG_EIO;
        }
    }

    *data = ret ^ S1284_INVERTED;
    return RIG_OK;
#else
    return -RIG_ENIMPL;
#endif
}


/**