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/* Revision history: */
/* $Id: vxi11_user.h,v 1.10 2007/10/30 12:47:33 sds Exp $ */
/*
* $Log: vxi11_user.h,v $
* Revision 1.10 2007/10/30 12:47:33 sds
* changed a lot of char *'s to const char *'s in an attempt to get
* rid of pedantic gcc compiler warnings.
*
* Revision 1.9 2007/07/11 14:20:56 sds
* removed #include <iostream> as not needed
* removed using namespace std
*
* Revision 1.8 2007/07/10 13:54:11 sds
* Added extra function:
* int vxi11_open_device(char *ip, CLINK *clink, char *device);
* This replaces the original vxi11_open_device fn, which did not pass
* a char *device. Wrapper fn used for backwards compatibility.
*
* Revision 1.7 2007/07/10 11:20:43 sds
* removed the following function:
* int vxi11_open_link(CLIENT **client, VXI11_LINK **link);
* ...since it was no longer needed, following the patch by
* Robert Larice.
*
* Revision 1.6 2006/12/08 11:47:14 ijc
* error on last ci, sorted.
*
* Revision 1.5 2006/12/08 11:45:29 ijc
* added #define VXI11_NULL_READ_RESP
*
* Revision 1.4 2006/12/07 12:26:17 sds
* added VXI11_NULL_READ_RESP #define
*
* Revision 1.3 2006/07/06 13:03:28 sds
* Surrounded the whole header with #ifndef __VXI11_USER__.
* Added a couple of vxi11_open_link() fns and a vxi11_close_link() fn, to
* separate the link stuff from the client stuff.
*
* Revision 1.2 2006/06/26 12:42:54 sds
* Introduced a new CLINK structure, to reduce the number of arguments
* passed to functions. Wrote wrappers for open(), close(), send()
* and receieve() functions, then adjusted all the other functions built
* on those to make use of the CLINK structure.
*
* Revision 1.1 2006/06/26 10:36:02 sds
* Initial revision
*
*/
/* vxi11_user.h
* Copyright (C) 2006 Steve D. Sharples
*
* User library for opening, closing, sending to and receiving from
* a device enabled with the VXI11 RPC ethernet protocol. Uses the files
* generated by rpcgen vxi11.x.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The author's email address is steve.sharples@nottingham.ac.uk
*/
#ifndef __VXI11_USER__
#define __VXI11_USER__
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rpc/rpc.h>
#include "vxi11.h"
#define VXI11_DEFAULT_TIMEOUT 10000 /* in ms */
#define VXI11_READ_TIMEOUT 2000 /* in ms */
#define VXI11_CLIENT CLIENT
#define VXI11_LINK Create_LinkResp
#define VXI11_MAX_CLIENTS 256 /* maximum no of unique IP addresses/clients */
#define VXI11_NULL_READ_RESP 50 /* vxi11_receive() return value if a query
* times out ON THE INSTRUMENT (and so we have
* to resend the query again) */
#define VXI11_NULL_WRITE_RESP 51 /* vxi11_send() return value if a sent command
* times out ON THE INSTURMENT. */
struct CLINK {
VXI11_CLIENT *client;
VXI11_LINK *link;
} ;
typedef struct CLINK CLINK;
/* The four main functions: open, close, send, receieve (plus a couple of wrappers) */
/* In fact all 6 of these are wrappers to the original functions listed at the
* bottom, that use separate CLIENT and VXI11_LINK structures. It was easier to
* write wrappers for these functions than to re-write the original functions
* themselves. These are the 4 (or 6 if you like) key user functions that you
* should probably be using. They all use the CLINK structure. */
int vxi11_open_device(const char *ip, CLINK *clink);
int vxi11_open_device(const char *ip, CLINK *clink, char *device);
int vxi11_close_device(const char *ip, CLINK *clink);
int vxi11_send(CLINK *clink, const char *cmd);
int vxi11_send(CLINK *clink, const char *cmd, unsigned long len);
long vxi11_receive(CLINK *clink, char *buffer, unsigned long len);
long vxi11_receive(CLINK *clink, char *buffer, unsigned long len, unsigned long timeout);
int vxi11_queryxx(CLINK *clink, char *mycmd);
/* Utility functions, that use send() and receive(). Use these too. */
int vxi11_send_data_block(CLINK *clink, const char *cmd, char *buffer, unsigned long len);
long vxi11_receive_data_block(CLINK *clink, char *buffer, unsigned long len, unsigned long timeout);
long vxi11_send_and_receive(CLINK *clink, const char *cmd, char *buf, unsigned long buf_len, unsigned long timeout);
long vxi11_obtain_long_value(CLINK *clink, const char *cmd, unsigned long timeout);
double vxi11_obtain_double_value(CLINK *clink, const char *cmd, unsigned long timeout);
long vxi11_obtain_long_value(CLINK *clink, const char *cmd);
double vxi11_obtain_double_value(CLINK *link, const char *cmd);
/* When I first wrote this library I used separate client and links. I've
* retained the original functions and just written clink wrappers for them
* (see above) as it's perhaps a little clearer this way. Probably not worth
* delving this deep in use, but it's where the real nitty gritty is. */
int vxi11_open_device(const char *ip, CLIENT **client, VXI11_LINK **link, char *device);
int vxi11_open_link(const char *ip, CLIENT **client, VXI11_LINK **link, char *device);
int vxi11_close_device(const char *ip, CLIENT *client, VXI11_LINK *link);
int vxi11_close_link(const char *ip, CLIENT *client, VXI11_LINK *link);
int vxi11_send(CLIENT *client, VXI11_LINK *link, const char *cmd);
int vxi11_send(CLIENT *client, VXI11_LINK *link, const char *cmd, unsigned long len);
long vxi11_receive(CLIENT *client, VXI11_LINK *link, char *buffer, unsigned long len);
long vxi11_receive(CLIENT *client, VXI11_LINK *link, char *buffer, unsigned long len, unsigned long timeout);
#endif