wrdk/testudo/linux-gpib-svn/lib/pass_control.c

/***************************************************************************
                          lib/pass_control.c
                             -------------------

	copyright            : (C) 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"

int my_pass_control( ibConf_t *conf, unsigned int pad, int sad )
{
	uint8_t cmd;
	int retval;
	int i;

	i = InternalReceiveSetup( conf, packAddress( pad, sad ) );

	cmd = TCT;
	retval = my_ibcmd( conf, &cmd, 1 );
	if( retval < 0 ) return retval;

	retval = internal_ibgts( conf, 0 );

	return 0;
}

int ibpct( int ud )
{
	ibConf_t *conf;
	ibBoard_t *board;
	int retval;

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

	board = interfaceBoard( conf );

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

	retval = my_pass_control( conf, conf->settings.pad, conf->settings.sad );
	if( retval < 0 )
		return exit_library( ud, 1 );

	return exit_library( ud, 0 );
}

void PassControl( int boardID, Addr4882_t address )
{
	ibConf_t *conf;
	ibBoard_t *board;
	int retval;

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

	if( addressIsValid( address ) == 0 )
	{
		exit_library( boardID, 1 );
		return;
	}

	board = interfaceBoard( conf );

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

	retval = my_pass_control( conf, extractPAD( address ), extractSAD( address ) );
	if( retval < 0 )
	{
		exit_library( boardID, 1 );
		return;
	}

	exit_library( boardID, 0 );
}