GpDma

$image\head10.gif$ Operation Sets whether to use DMA, FIFO and BusMaster.
The current version does not support BusMaster and DMA.

$image\head10.gif$ Format

(VB.NET)

Dim Dmamode, Dmach, Ret As Integer

Ret = GpDma(Dmamode, Dmach)

(C)

DWORD Dmamode, Dmach, Ret;

Ret = GpDma(Dmamode, Dmach);

(C#)

uint Dmamode, Dmach, Ret;

Ret = gpib.Dma(Dmamode, Dmach);

(Python)

Dmamode, Dmach, Ret = ctypes.c_ulong(), ctypes.c_ulong(), ctypes.c_ulong()

Ret.value = GpibPy.GpDma(Dmamode, Dmach)

$image\head10.gif$ Mode Master mode/Slave mode

$image\head10.gif$ Parameters

Dmamode : Use of DMA, FIFO and BusMaster (transfer mode)

0 : DMA, FIFO and BusMaster OFF

1 : DMA ON (The current version does not support DMA.)

2 : FIFO ON

3 : BusMaster ON (The current version does not support BusMaster.)

Dmach : DMA Channels

1 - 3

Ret : Return value

0 : Normal completion

80 : GpIni() hasn't execute

140 : Asynchronous function is executing now

210 : Cannot initialize DMA channel

255 : Parameter error

(See "Return Values" for details.)

$image\head10.gif$ Notes

For receiving by DMA, FIFO, BusMaster, use at least either one of a delimiter or EOI.

The current version does not support BusMaster and DMA.