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/***************************************************************************
lib/ibSad.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 internal_ibsad(ibConf_t *conf, int address)
{
ibBoard_t *board;
struct gpib_sad_ioctl sad_cmd;
int sad;
int retval;
board = interfaceBoard(conf);
if (!address)
sad = -1;
else
sad = address - sad_offset;
if (sad < -1 || sad > gpib_sad_max) {
setIberr(EARG);
return -1;
}
sad_cmd.handle = conf->handle;
sad_cmd.sad = sad;
retval = ioctl(board->fileno, IBSAD, &sad_cmd);
if (retval < 0) {
fprintf(stderr, "libgpib: failed to change gpib secondary address\n");
setIberr(EDVR);
setIbcnt(errno);
return retval;
}
conf->settings.sad = sad;
return 0;
}
int ibsad(int ud, int v)
{
ibConf_t *conf;
int retval;
conf = enter_library(ud);
if (conf == NULL)
return exit_library(ud, 1);
retval = internal_ibsad(conf, v);
if (retval < 0)
return exit_library(ud, 1);
return exit_library(ud, 0);
}
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