Specifications

University of Hertfordshire
48
else
if (buf=="ID?"){
system ("echo \"SEND 18 \'ID?\'\"| cat - > /dev/gpib0");
printf("Identify HP8591 EM Spectrum Analyser \n");
}
else {
spec[3]=buf;
system("echo \"SEND 18 \'FA %s MZ;FB %s MZ;CF %s MZ;SP %s MZ;\'\"| cat ->
/dev/gpib0\n",spec[0],spec[1],spec[2],spec[3]);
printf("To control the HP8591 EM Spectrum Analyser at FA: %s, FB: %s, CF: %s, SP: %s \n",
spec[0],spec[1],spec[2],spec[3]);
system("echo \"RECIEVE 18\"| cat - > /dev/gpib0; read x< /dev/gpib0");
result[]=$x;
}
//return result to the client
send(temp_sock_descriptor,result[], len,0);
printf("send results to client:%s\n", result[]);
close(temp_sock_descriptor);
}