GpStppoll

$image\BLTLRGSQ.gif$ Boards that Support the Function $image\SETUP.gif$ $image\SANBTN.gif$

$image\head10.gif$ Operation Allocates output lines when executing the parallel poll.

$image\head10.gif$ Format

(VB.NET)

Dim Stppu, Ret As Integer

Dim Cmd(xxxx) As Integer ' (xxxx specifies the maximum number of command arrays.)

Ret = GpStppoll(Cmd, Stppu)

(C)

DWORD Stppu, Ret;

DWORD * Cmd;

Ret = GpStppoll(Cmd, Stppu);

(C#)

uint Stppu, Ret;

uint[] Cmd = new uint[xxxx]; /* (xxxx specifies the maximum number of command arrays.) */

Ret = gpib.Stppoll(Cmd, Stppu);

(Python)

Stppu, Ret = ctypes.c_ulong(), ctypes.c_ulong()

Cmd = (ctypes.c_ulong * xxxx) #(xxxx specifies the maximum number of command arrays.)

Ret.value = GpibPy.GpStppoll(Cmd, Stppu)

$image\head10.gif$ Mode Master mode only

$image\head10.gif$ Parameters

Cmd : [0] Number of listeners

[1] Listener address(0 - 30)

[2] Line code

[3] Listener address(0 - 30)

[4] Line code

$image\CONTINUE.gif$

Stppu : Parallel Poll Unconfigure(PPU) output specification

0 : Not output

1 : Output

Ret : Return value

0 : Normal completion

80 : GpIni() hasn't execute

140 : Asynchronous function is executing now

240 : ESC key pressed

252 : GP-IB error

254 : Timeout

255 : Parameter error

(See "Return Values" for details.)

$image\head10.gif$ Notes

Composition of Line code as follows

$image\ebx_1104698165.gif$

Upper bits 6 (fixed)

U = 0 : Parallel Poll Enable(PPE)

U = 1 : Parallel Poll Disable(PPD)

Lower bits S = 0 S = 1 P3 P2 P1

Responded by 0 Responded by 1

0 0 0 : DIO1

0 0 1 : DIO2

0 1 0 : DIO3

0 1 1 : DIO4

1 0 0 : DIO5

1 0 1 : DIO6

1 1 0 : DIO7

1 1 1 : DIO8

Value of S is DIO Line's bits data, so set S=1.
For example, when set 68H(DIO1), return value of Pprdata (argument of GpExppoll) is 1 (if sended SRQ).