Rigol DSA832E - Page 239

Chapter 3 Programming Demos RIGOL
DSA800E Programming Guide 3-25
string strInstr = "";
ViChar instrDesc[1000];
unsigned long i = 0;
bool bFindDSA = false;
memset(instrDesc,0,1000);
//Turn on the VISA device
status = viOpenDefaultRM(&defaultRM);
if (status < VI_SUCCESS)
{
cout<<"No VISA equipment!"<<endl;
return false;
}
//Search for resource
status = viFindRsrc(defaultRM,expr,findList, retcnt, instrDesc);
for (i = 0;i < (*retcnt);i++)
{
//Acquire the instrument name
strSrc=
InstrWrite(strSrc,"*IDN?");
usleep(200);
InstrRead(strSrc,strInstr);
//If the instrument is DSA series, the desired instrument is found and exit
makeupper(strInstr);
if (strInstr.find("DSA",0) > 0)
{
bFindDSA = true;
m_strInstrAddr = strSrc;
break;
}
//Acquire the next device
status = viFindNext(*findList,instrDesc);
}
if (bFindDSA == false)
{
printf("DSA device not found!\n");
return false;
}
return true;
}
bool DemoForDSA::InstrWrite(string strAddr, string strContent) //Write operation
{
ViSession defaultRM,instr;
ViStatus status;
ViUInt32 retCount;
char * SendBuf = NULL;
char * SendAddr = NULL;
bool bWriteOK = false;