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/***************************************************************************
lib/ibSpb.c
-------------------
copyright : (C) 2017 by Dave Penkler
email : dpenkler@gmail.com
***************************************************************************/
/***************************************************************************
* *
* 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_ibspb(ibConf_t *conf, short *sp_bytes)
{
int retval;
ibBoard_t *board;
struct gpib_spoll_bytes_ioctl spb;
if (conf->is_interface) {
setIberr(EARG);
return -1;
}
board = interfaceBoard(conf);
spb.pad = conf->settings.pad;
spb.sad = conf->settings.sad;
retval = ioctl(board->fileno, IBSPOLL_BYTES, &spb);
if (retval < 0) {
switch (errno) {
default:
setIbcnt(errno);
setIberr(EDVR);
break;
}
return -1;
}
*sp_bytes = spb.num_bytes;
return 0;
}
int ibspb(int ud, short *sp_bytes)
{
ibConf_t *conf;
int retval;
conf = general_enter_library(ud, 1, 1);
if (conf == NULL)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
retval = internal_ibspb(conf, sp_bytes);
if (retval < 0)
return general_exit_library(ud, 1, 0, 0, 0, 0, 1);
return general_exit_library(ud, 0, 0, 0, 0, 0, 1);
}
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