/***************************************************************************
                          lib/ibCac.c
                             -------------------

    copyright            : (C) 2001,2002,2003 by Frank Mori Hess
    email                : fmhess@users.sourceforge.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "ib_internal.h"

int ibcac(int ud, int synchronous)
{
	ibConf_t *conf;
	ibBoard_t *board;
	int retval;

	conf = enter_library(ud);
	if (conf == NULL)
		return exit_library(ud, 1);

	if (conf->is_interface == 0) {
		setIberr(EARG);
		return exit_library(ud, 1);
	}

	board = interfaceBoard(conf);

	retval = is_cic(board);
	if (retval <= 0) {
		if (retval == 0)
			setIberr(ECIC);
		return exit_library(ud, 1);
	}

	retval = ioctl(board->fileno, IBCAC, &synchronous);
	// if synchronous failed, fall back to asynchronous
	if (retval < 0 && synchronous ) {
		synchronous = 0;
		retval = ioctl(board->fileno, IBCAC, &synchronous);
	}
	if (retval < 0)	{
		switch (errno) {
			default:
				setIberr(EDVR);
				break;
		}
		return exit_library(ud, 1);
	}

	return exit_library(ud, 0);
}
