Application Note SCPI Recorder - Rohde & Schwarz Singapore

Appendix
NI CVI Template
10 Appendix
10.1 NI CVI Template
#EXTENSION_START
.c
#EXTENSION_END
#INIT_CODE_START
#include
#include
#include
#define MAX_BUFFER_SIZE 200
static ViStatus status;
static ViSession defaultRM, handle;
static void write_command(char *command)
{
char writeBuffer[MAX_BUFFER_SIZE];
char readBuffer[MAX_BUFFER_SIZE];
int length;
int readCount;
}
strcpy(writeBuffer, command);
//Append "*OPC?" to sync
strcat(writeBuffer, ";*OPC?");
length = strlen(writeBuffer);
writeBuffer[length]='\n';
length = length+1;
viWrite(handle, writeBuffer, length, VI_NULL);
//Read result
viRead(handle, readBuffer, 100, &readCount);
int main(int argc, char *argv[])
{
if(InitCVIRTE(0, argv, 0) == 0)
return -1; //Out of memory
//Create a VISA session and return a handle to it
viOpenDefaultRM(&defaultRM);
//Create a VISA session via LAN (TCPIP) to instrument and return
//a handle to it
viOpen(defaultRM, (ViRsrc)"TCPIP::%HOSTNAME::INSTR", VI_NULL,
VI_NULL, &handle);
#INIT_CODE_END
#COMMAND_CODE_START
write_command("%COMMAND");
#COMMAND_CODE_END
#EXIT_CODE_START
viClose (handle);
viClose (defaultRM);
return 0;
}
#EXIT_CODE_END
1GP98_0E Rohde & Schwarz SCPI-Recorder 39