Agilent Technologies DP235 Guía de usuario descargar pdf (Pagina 524)

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524

Programming the Logic Analyzer Using the LAN

To write programs that open the command

parser socket

The command parser socket of the logic analyzer is 5025.

Connection to the command parser socket is, by definition, a control

user connection. Because only one control user connection is allowed,

you will not be able to open the command parser socket if someone

else is accessing the logic analyzer's file system as the control user.

Example The following C program opens a socket and sends the *IDN query

command to request the instrument's identity.

#include <stdio.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

typedef struct sockaddr_in tdSOCKET_ADDR;

#define PARSER_PORT 5025

#define SERV_HOST_ADDR "15.10.96.12"

#define PARSER_BUFFER_SIZE 100

char receiveBuffer[PARSER_BUFFER_SIZE],

*cmdString = { "*IDN?\r\n" };

main ()

{

int sockfd, port;

tdSOCKET_ADDR serv_addr;

char *addr;

/* Initialize a server socket */

port = PARSER_PORT;

addr = SERV_HOST_ADDR ;

serv_addr.sin_family = AF_INET;

serv_addr.sin_addr.s_addr = inet_addr ( addr );

serv_addr.sin_port = htons ( port );

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