Serial Poll

Use Equipment ID

- Single (Performs serial poll to slave device specified by EqpID.)

short Stb, Srq;

Ret = GpibSPolll ( EqpId, &Stb, &Srq );                // Retrieve status byte of destination device whose Equipment ID is specified

if ( Ret == 0 ) {                                      // Confirms whether it is normal completion

    Printf ( "%ld\n", Stb );                           // Outputs status byte

    Printf ( "%ld\n", Srq );                           // Outputs status for SRQ

}

Use Device ID

- Plural (Performs serial poll to slave devices whose addresses are 1 and 2, outputs status byte and address from which SRQ is detected on normal completion.)

short AddrArray[15], StbArray[15], SrqArray[15], i, k;

AddrArray[0] = 1;                                       // Sets address to 1

AddrArray[1] = 2;                                       // Sets address to 2

AddrArray[2] = -1;                                      // Specifies [-1] as terminal (It must be input at last of array for slaves.)

Ret = GpibSPollAll ( DevId, AddrArray, StbArray, SrqArray );  // Retrieves status bytes of destination devices whose addresses are specified

if ( Ret == 0 ) {                                       // Confirms whether it is normal completion

    i = 0;                                              // Initial variable specifying the index of array element

    k = 0;                                              // Initial variable specifying number of devices from which SRQ are transmitted

    while ( AddrArray[i] != -1 ) {                      // Iterates until specified address is terminal

        if ( SrqArray [i] != 0 ) {                      // Confirms device that outputted SRQ

            Printf ( "%ld\n", AddrArray[i] );           // Outputs address of destination device

            Printf ( "%ld\n", StbArray[i] );            // Outputs status byte

            k++;                                        // Counts up number of devices that outputted SRQ

        }

        i++;                                            // Counts up the index of array element

    }

    if ( k == 0) Printf ( "No SRQ\n" );                 // Displays message when no device outputted SRQ

}

Use Equipment ID

- Single (Performs serial poll to slave device specified by EqpID.)

short Stb, Srq;

long SRQflag;

SRQflag = 0;                                            // Initials flag to confirm SRQ

do {

    Ret = GpibGetStatus ( Id, 0x12, &SRQflag);          // Confirms SRQ specification

    if ( Ret != 0 ) break;                              // Checks return value

    sleep(10);

} while ( SRQflag == 0 );                               // Loops until SRQ is asserted

if ( SRQflag == 1 ) {                                   // Confirms whether SRQ is asserted

    Ret = GpibSPoll ( EqpId, &Stb, &Srq );              // Retrieve status byte of destination device whose Equipment ID is specified

    if ( Ret == 0 ) {                                   // Confirms whether it is normal completion

        Printf ( "%ld\n", Stb );                        // Outputs status byte

        Printf ( "%ld\n", Srq );                        // Outputs status for SRQ

    }

}