Programming Examples
LAN Programming Examples
Chapter 272
Setting Parameters and Sending Queries Using Sockets and C
The following programming examples are available on the ESG Documentation CD-ROM as
lanio.c and getopt.c.
/***************************************************************************
* $Header: lanio.c 04/24/01
* $Revision: 1.1 $
* $Date: 10/24/01
* PROGRAM NAME: lanio.c
*
* $Description: Functions to talk to an Agilent signal generator
* via TCP/IP. Uses command-line arguments.
*
* A TCP/IP connection to port 5025 is established and
* the resultant file descriptor is used to "talk" to the
* instrument using regular socket I/O mechanisms. $
*
*
*
* Examples:
*
* Query the signal generator frequency:
* lanio xx.xxx.xx.x ’FREQ?’
*
* Query the signal generator power level:
* lanio xx.xxx.xx.x ’POW?’
*
* Check for errors (gets one error):
* lanio xx.xxx.xx.x ’syst:err?’
*
* Send a list of commands from a file, and number them:
* cat scpi_cmds | lanio -n xx.xxx.xx.x
*
****************************************************************************
*
* This program compiles and runs under
* - HP-UX 10.20 (UNIX), using HP cc or gcc:
* + cc -Aa -O -o lanio lanio.c
* + gcc -Wall -O -o lanio lanio.c
*
* - Windows 95, using Microsoft Visual C++ 4.0 Standard Edition
* - Windows NT 3.51, using Microsoft Visual C++ 4.0
* + Be sure to add WSOCK32.LIB to your list of libraries!
* + Compile both lanio.c and getopt.c
* + Consider re-naming the files to lanio.cpp and getopt.cpp
*
* Considerations:
* - On UNIX systems, file I/O can be used on network sockets.
* This makes programming very convenient, since routines like
* getc(), fgets(), fscanf() and fprintf() can be used. These
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