Rigol DG4000 Series - Page 617

char * SendAddr = NULL;
bool bWriteOK = false;
CString str;
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// Change the address's data style from CString to char*
SendAddr = strAddr.GetBuffer(strAddr.GetLength());
strcpy(SendAddr,strAddr);
strAddr.ReleaseBuffer();
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// Change the command's data style from CString to char*
SendBuf = strContent.GetBuffer(strContent.GetLength());
strcpy(SendBuf,strContent);
strContent.ReleaseBuffer();
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//open a VISA resource
status = viOpenDefaultRM(&defaultRM);
if (status < VI_SUCCESS)
{
AfxMessageBox("No VISA resource was opened!");
return false;
}
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status = viOpen(defaultRM, SendAddr, VI_NULL, VI_NULL, &instr);
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//Write command to the instrument
status = viWrite(instr, (unsigned char *)SendBuf, strlen(SendBuf), &retCount);
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//Close the system
status = viClose(instr);
status = viClose(defaultRM);
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return bWriteOK;
}
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2) Encapsulate the read operation of VISA for easier operation.
bool CDemoForDGDlg::InstrRead(CString strAddr, CString *pstrResult) //Read
//operation
{
ViSession defaultRM,instr;
ViStatus status;
ViUInt32 retCount;
char * SendAddr = NULL;
unsigned char RecBuf[MAX_REC_SIZE];
bool bReadOK = false;
CString str;
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// Change the address's data style from CString to char*
SendAddr = strAddr.GetBuffer(strAddr.GetLength());
strcpy(SendAddr,strAddr);
strAddr.ReleaseBuffer();
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memset(RecBuf,0,MAX_REC_SIZE);
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//Open a VISA resource
status = viOpenDefaultRM(&defaultRM);