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X-Stream Operator’s Manual

WM-OM-E Rev I 227

double horOffset; // horizontal offset (in horizontal units, e.g. seconds)

// of the waveform

double horResolution; // horizontal resolution of the measurement system

//(also in horizontal units)

lecTimeStamp trigTime; // trigger time, units of 1ns since 00:00:00 on Jan 1st

// 2000, 64-bit unsigned integer

char verUnit[48]; // vertical units of the waveform ("V" for example)

char horUnit[48]; // horizontal units of the waveform ("s" for example)

};

#pragma pack(pop) // restore packing

//---------------------------------------------------------------------------------------

---

// The buffer size is 80MB (40,000,000 samples, stored as short integers) plus 0x1000

// bytes for the header.

const unsigned long HEADER_SIZE = 0x1000

const unsigned long MEM_MAP_FILE_SIZE = 80000000 + HEADER_SIZE; // = 40MSamples,

// or 80MBytes

int main(int argc, char* argv[])

{

// names based on 'FastWavePort1' name defined in Processor setup.

char szMapFileName[] = "FastWavePort1File";

char szMutexDataAvailableName[] = "FastWavePort1MutexDataAvailable";

char szMutexProcessingCompleteName[] = "FastWavePort1MutexProcessingComplete";

// Associate shared memory file handle value.

HANDLE m_hMMFile = CreateFileMapping ((HANDLE)0xffffffff, NULL, PAGE_READWRITE, 0,

MEM_MAP_FILE_SIZE, szMapFileName);

if(m_hMMFile == 0)

{

printf("Unable to create file mapping\n");

return 0;

}

// Map a view of this file for writing.

short *m_lpMMFile = (short *)MapViewOfFile (m_hMMFile, FILE_MAP_ALL_ACCESS, 0, 0, 0);

if(m_lpMMFile == 0)

{

printf("Unable to map view of file\n");

return 0;

}

// create/open events used for synchronization

LeCroy WaveMaster 8600A User Manual

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