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usb-6009

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This commit is contained in:
Mike Phares
2024-11-01 11:47:29 -07:00
commit ebbc16ee6a
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73
NI-VISA/Examples/C/TCPIP/tcpip.c Normal file
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/*********************************************************************/
/* This example demonstrates opening a simple TCPIP connection and */
/* does a read and checks a few properties. */
/* */
/* The general flow of the code is */
/* Open Resource Manager */
/* Open a session to the TCP/IP site at NI */
/* Perform a read, and check properties */
/* Close all VISA Sessions */
/*********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "visa.h"
static char outputBuffer[VI_FIND_BUFLEN];
static ViSession defaultRM, instr;
static ViStatus status;
static ViUInt32 count;
static ViUInt16 portNo;
int main(void)
{
/* First we will need to open the default resource manager. */
status = viOpenDefaultRM (&defaultRM);
if (status < VI_SUCCESS)
{
printf("Could not open a session to the VISA Resource Manager!\n");
exit (EXIT_FAILURE);
}
/* Now we will open a session via TCP/IP to ni.com */
status = viOpen (defaultRM, "TCPIP0::ftp.ni.com::21::SOCKET", VI_NULL, VI_NULL, &instr);
if (status < VI_SUCCESS)
{
printf ("An error occurred opening the session to TCPIP0::ftp.ni.com::21::SOCKET\n");
viClose(defaultRM);
exit (EXIT_FAILURE);
}
viSetAttribute (instr, VI_ATTR_TCPIP_NODELAY, VI_TRUE);
status = viRead (instr, (ViBuf)outputBuffer, 25, &count);
if (status < VI_SUCCESS)
{
printf("viRead failed with error code %x \n",status);
viClose(defaultRM);
exit (EXIT_FAILURE);
}
printf("The server response is:\n %s\n\n",outputBuffer);
status = viGetAttribute (instr, VI_ATTR_TCPIP_ADDR, outputBuffer);
printf(" Address: %s\n",outputBuffer);
status = viGetAttribute (instr, VI_ATTR_TCPIP_HOSTNAME, outputBuffer);
printf(" Host Name: %s\n",outputBuffer);
status = viGetAttribute (instr, VI_ATTR_TCPIP_PORT, &portNo);
printf(" Port: %d\n",portNo);
status = viGetAttribute (instr, VI_ATTR_RSRC_CLASS, outputBuffer);
printf(" Resource Class: %s\n",outputBuffer);
status = viClose (instr);
status = viClose (defaultRM);
printf ("\nHit enter to continue.");
fflush(stdin);
getchar();
return 0;
}