/***************************************************************************
                          lib/ibClr.c
                             -------------------

    copyright            : (C) 2001,2002 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"
#include <stdlib.h>

int ibclr(int ud)
{
	uint8_t cmd[ 16 ];
	ibConf_t *conf;
	ssize_t count;
	int i;

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

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

	i = send_setup_string(conf, cmd);
	cmd[i++] = SDC;

	//XXX detect no listeners (EBUS) error
	count = my_ibcmd(conf, conf->settings.usec_timeout, cmd, i);
	if (count != i)
		return exit_library(ud, 1);

	return exit_library(ud, 0);
}


int InternalDevClearList(ibConf_t *conf, const Addr4882_t addressList[])
{
	int i;
	ibBoard_t *board;
	uint8_t *cmd;
	int count;
	int retval;

	if (addressListIsValid(addressList) == 0)
		return -1;

	if (conf->is_interface == 0) {
		setIberr(EDVR);
		return -1;
	}

	board = interfaceBoard(conf);

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

	cmd = malloc(16 + 2 * numAddresses(addressList));
	if (cmd == NULL) {
		setIberr(EDVR);
		setIbcnt(ENOMEM);
		return -1;
	}

	i = 0;
	if (numAddresses(addressList)) {
		i += create_send_setup(board, addressList, cmd);
		cmd[i++] = SDC;
	} else {
		cmd[ i++ ] = DCL;
	}
	//XXX detect no listeners (EBUS) error
	count = my_ibcmd(conf, conf->settings.usec_timeout, cmd, i);

	free(cmd);
	cmd = NULL;

	if (count != i)
		return -1;

	return 0;
}

void DevClearList(int boardID, const Addr4882_t addressList[])
{
	int retval;
	ibConf_t *conf;

	conf = enter_library(boardID);
	if (conf == NULL) {
		exit_library(boardID, 1);
		return;
	}

	retval = InternalDevClearList(conf, addressList);
	if (retval < 0)
		exit_library(boardID, 1);

	exit_library(boardID, 0);
}

void DevClear(int boardID, Addr4882_t address)
{
	Addr4882_t addressList[2];

	addressList[0] = address;
	addressList[1] = NOADDR;

	DevClearList(boardID, addressList);
}
