ADLINK cPCI-9116 - Manual (Page 85)

C++ Library
• 75
6.11 AD continuous scan data acquisition with
double-buffered DMA transfer functions
These functions are used to perform continuous scan data acquisition
with double-buffered DMA data transfer. It takes place in the
background and will not stop until the execution of
_9116_AD_DMA_Stop() function to stop the process. (Note these
functions do not apply to pre-trigger and middle-trigger mode.) Refer to
the sample program AD_DEMO10.C.
6.11.1 _9116_DblBufferMode
@ Description
This function is used to enable the double-buffered mode. If
double-buffered mode is set, function _9116_AD_DMA_Start() will
perform continuous scan data acquisition. Otherwise function
_9116_AD_DMA_Start() only performs one-shot scan data acquisition.
@ Syntax
C/C++ (DOS)
int _9116_DblBufferMode(I16 card_number, U8 enable)
@ Argument
card_number: the card number of the cPCI-9116 to be initialized,
totally 4 cards can be initialized, valid card
numbers are CARD_1, CARD_2, CARD_3,
CARD_4.
Enable: enable/disable double-buffered mode DMA.
0: disabled
1: enabled
@ Return Code
ERR_NoError
ERR_BoardNoInit