Agilent-technologies N5183A MXG Manuel d'utilisateur télécharger pdf (Page 253)

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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 243

Creating and Downloading Waveform Files

Programming Examples

if( fseek( file, 0, SEEK_END ) < 0 )

{

fprintf(stderr,"Cannot seek to the end of file.\n" );

return 0;

}

long lenToSend = ftell(file);

printf("File size = %d\n", lenToSend);

if (fseek(file, 0, SEEK_SET) < 0)

{

fprintf(stderr,"Cannot seek to the start of file.\n");

return 0;

}

char* buf = new char[BUFFER_SIZE];

if (buf && lenToSend)

{

// Prepare and send the SCPI command header

char s[20];

sprintf(s, "%d", lenToSend);

int lenLen = strlen(s);

char s2[256];

sprintf(s2, "mmem:data \"%s\", #%d%d", instDestFile, lenLen, lenToSend);

iwrite(id, s2, strlen(s2), 0, 0);

// Send file in BUFFER_SIZE chunks

long numRead;

{

numRead = fread(buf, sizeof(char), BUFFER_SIZE, file);

iwrite(id, buf, numRead, 0, 0);

} while (numRead == BUFFER_SIZE);

// Send the terminating newline and EOM

iwrite(id, "\n", 1, 1, 0);

delete [] buf;

}

else

{

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Agilent-technologies N5183A MXG Manuel d'utilisateur Page 253

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