Adlink cPCI-9116 Instrukcja Użytkownika Pobierz pdf (Strona 81)

C++ Library • 71

6.9.3 _9116_AD_DMA_Stop

@ Description

This function is used to stop the DMA data transfer and obtain the start

index of the data buffer when pre-trigger or middle-trigger is selected.

@ Syntax

C/C++ (DOS)

int _9116_AD_DMA_Stop( I16 card_number, U32 *count, U32

*start_idx )

@ 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.

Count:

the number of A/D converted data that have been

transferred.

start_idx:

The index where the data started from within the

user’s buffer, i.e the sequence of read data is:

buff[start_idx], buff[start_idx+1], _, buff[0],

buff[1],_.,buff[start_idx-1].

@ Return Code

ERR_NoError

ERR_BoardNoInit

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Adlink cPCI-9116 Instrukcja Użytkownika Strona 81