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/***************************************************************************
lib/ibRsp.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"
static int serial_poll(ibBoard_t *board, unsigned int pad, int sad,
unsigned int usec_timeout, char *result)
{
struct gpib_serial_poll_ioctl poll_cmd;
int retval;
poll_cmd.pad = pad;
poll_cmd.sad = sad;
set_timeout(board, usec_timeout);
retval = ioctl(board->fileno, IBRSP, &poll_cmd);
if (retval < 0) {
switch (errno) {
case ETIMEDOUT:
setIberr(EABO);
break;
case EPIPE:
setIberr(ESTB);
break;
default:
setIberr(EDVR);
setIbcnt(errno);
break;
}
return -1;
}
*result = poll_cmd.status_byte;
return 0;
}
int ibrsp(int ud, char *spr)
{
ibConf_t *conf;
ibBoard_t *board;
int retval;
conf = enter_library(ud);
if (!conf)
return exit_library(ud, 1);
if (conf->is_interface) {
setIberr(EARG);
return exit_library(ud, 1);
}
board = interfaceBoard(conf);
retval = serial_poll(board, conf->settings.pad, conf->settings.sad,
conf->settings.spoll_usec_timeout, spr);
if (retval < 0) {
if (errno == ETIMEDOUT)
conf->timed_out = 1;
return exit_library(ud, 1);
}
return exit_library(ud, 0);
}
void AllSPoll(int boardID, const Addr4882_t addressList[], short resultList[])
{
int i;
ibConf_t *conf;
ibBoard_t *board;
int retval;
conf = enter_library(boardID);
if (!conf) {
exit_library(boardID, 1);
return;
}
if (addressListIsValid(addressList) == 0) {
exit_library(boardID, 1);
return;
}
if (conf->is_interface == 0) {
setIberr(EDVR);
exit_library(boardID, 1);
return;
}
board = interfaceBoard(conf);
retval = is_cic(board);
if (retval <= 0) {
if (retval == 0)
setIberr(ECIC);
exit_library(boardID, 1);
return;
}
// XXX could use slightly more efficient ALLSPOLL protocol
retval = 0;
for (i = 0; i < numAddresses(addressList); i++) {
char result;
retval = serial_poll(board, extractPAD(addressList[ i ]),
extractSAD(addressList[ i ]), conf->settings.spoll_usec_timeout, &result);
if (retval < 0) {
if (errno == ETIMEDOUT)
conf->timed_out = 1;
break;
}
resultList[ i ] = result & 0xff;
}
setIbcnt(i);
if (retval < 0)
exit_library(boardID, 1);
else
exit_library(boardID, 0);
}
void AllSpoll(int boardID, const Addr4882_t addressList[], short resultList[])
{
AllSPoll(boardID, addressList, resultList);
}
void FindRQS(int boardID, const Addr4882_t addressList[], short *result)
{
int i;
ibConf_t *conf;
ibBoard_t *board;
int retval;
conf = enter_library(boardID);
if (!conf) {
exit_library(boardID, 1);
return;
}
if (addressListIsValid(addressList) == 0) {
exit_library(boardID, 1);
return;
}
if (conf->is_interface == 0) {
setIberr(EDVR);
exit_library(boardID, 1);
return;
}
board = interfaceBoard(conf);
retval = is_cic(board);
if (retval <= 0) {
if (retval == 0)
setIberr(ECIC);
exit_library(boardID, 1);
return;
}
retval = 0;
for (i = 0; i < numAddresses(addressList); i++) {
char spoll_byte;
retval = serial_poll(board, extractPAD(addressList[ i ]),
extractSAD(addressList[ i ]), conf->settings.usec_timeout, &spoll_byte);
if (retval < 0) {
if (errno == ETIMEDOUT)
conf->timed_out = 1;
break;
}
if (spoll_byte & request_service_bit) {
*result = spoll_byte & 0xff;
break;
}
}
setIbcnt(i);
if (i == numAddresses(addressList)) {
setIberr(ETAB);
retval = -1;
}
if (retval < 0)
exit_library(boardID, 1);
else
exit_library(boardID, 0);
}
void ReadStatusByte(int boardID, Addr4882_t address, short *result)
{
ibConf_t *conf;
ibBoard_t *board;
char byte_result;
int retval;
conf = enter_library(boardID);
if (!conf) {
exit_library(boardID, 1);
return;
}
if (addressIsValid(address) == 0) {
exit_library(boardID, 1);
return;
}
if (conf->is_interface == 0) {
setIberr(EDVR);
exit_library(boardID, 1);
return;
}
board = interfaceBoard(conf);
retval = is_cic(board);
if (retval <= 0) {
if (retval == 0)
setIberr(ECIC);
exit_library(boardID, 1);
return;
}
retval = serial_poll(board, extractPAD(address), extractSAD(address),
conf->settings.spoll_usec_timeout, &byte_result);
if (retval < 0) {
if (errno == ETIMEDOUT)
conf->timed_out = 1;
exit_library(boardID, 1);
return;
}
*result = byte_result & 0xff;
exit_library(boardID, 0);
}
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