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/***************************************************************************
lib/ibOnl.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"
#include <stdlib.h>
int board_online(ibBoard_t *board, int online, ibConf_t *conf)
{
if (online) {
if (ibBoardOpen(board, conf->error_msg_disable) < 0)
return -1;
} else {
ibBoardClose(board);
}
return 0;
}
int conf_online(ibConf_t *conf, int online)
{
ibBoard_t *board;
int retval;
if ((online && conf->board_is_open) ||
(online == 0 && conf->board_is_open == 0))
return 0;
board = interfaceBoard(conf);
retval = board_online(board, online, conf);
if (retval < 0)
return retval;
if (online)
retval = open_gpib_handle(conf);
else
retval = close_gpib_handle(conf);
if (retval < 0)
return retval;
conf->board_is_open = online != 0;
return 0;
}
int reinit_descriptor(ibConf_t *conf)
{
int msad;
int retval;
retval = internal_ibpad(conf, conf->defaults.pad);
if (retval < 0)
return retval;
msad = conf->defaults.sad;
if (msad < 0)
msad = 0;
else
msad = MSA(msad);
retval = internal_ibsad(conf, msad);
if (retval < 0)
return retval;
if (conf->is_interface == 0) { /* ibbna is device only */
retval = my_ibbna(conf, conf->defaults.board);
if (retval < 0) return retval;
}
conf->settings.usec_timeout = conf->defaults.usec_timeout;
conf->settings.spoll_usec_timeout = conf->defaults.usec_timeout;
conf->settings.ppoll_usec_timeout = conf->defaults.usec_timeout;
conf->settings.eos = conf->defaults.eos;
conf->settings.eos_flags = conf->defaults.eos_flags;
conf->settings.ppoll_config = conf->defaults.ppoll_config;
internal_ibeot(conf, conf->defaults.send_eoi);
conf->settings.local_lockout = conf->defaults.local_lockout;
conf->settings.readdr = conf->defaults.readdr;
return 0;
}
int ibonl(int ud, int onl)
{
ibConf_t *conf;
int retval;
int status;
conf = general_enter_library(ud, 1, 1);
if (conf == NULL)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
retval = internal_ibstop(conf);
if (retval < 0)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
retval = conf_lock_board(conf);
if (retval < 0)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
if (onl) {
retval = reinit_descriptor(conf);
if (retval < 0)
return exit_library(ud, 1);
else
return exit_library(ud, 0);
}
status = general_exit_library(ud, 0, 0, 0, 0, CMPL, 1);
if (onl == 0)
retval = close_gpib_handle(conf);
else
retval = 0;
conf_unlock_board(conf);
if (retval < 0) {
fprintf(stderr, "libgpib: failed to mark device as closed!\n");
status |= ERR;
setIbsta(status);
sync_globals();
return status;
}
release_descriptor(ud);
return status;
}
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