ADLINK ACL-8216 User Manual

Page 64

56 • C/C++ Library

5.16 _8216_AD_DMA_Status

@ Description

Since the _8216_AD_DMA_Start function is executed in background,
you can issue the function _8216_AD_DMA_Status to check its
operation status.

@ Syntax

int _8216_AD_DMA_Status( int *status , int *count )

@ Argument

status:

status of the DMA data transfer

0: AD DMA is not completed

1: AD DMA is completed

count:

the number of A/D data which has been

transferred.

@ Return Code

ERR_NoError
ERR_BoardNoInit
ERR_AD_DMANotSet

@ Example

See demo program 'AD_Demo4.C'

5.17 _8216_AD_DMA_Stop

@ Description

This function is used to stop the DMA data transfer. After executing
this function, the internal A/D trigger is disable and the A/D timer
( timer #1 and #2) is stopped. The function returns the number of the
data which has been transferred, no matter if the A/D DMA data
transfer is stopped by this function or by the DMA terminal count ISR.