ADLINK cPCI-7300 User Manual

Page 60

• C/C++ Libraries

5.7 _7300_DO_Mode

@ Description

Set the clock mode and start mode for the PCI-7300A DO operation.

@ Syntax

Visual C/C++ (Windows 95)

int W_7300_DO_Mode (int card_number, int clk_mode, int

start_mode, int fifo_threshold)

Visual Basic (Windows 95)
W_7300_DO_Mode (ByVal card_number As Long, ByVal clk_mode As Long,

ByVal start_mode As Long, ByVal fifo_threshold As
Long) As Long

C/C++ (DOS)

int _7300_DO_Mode (int card_number, int clk_mode, int start_mode,

int fifo_threshold)

@ Argument

card_number:

The card number of the PCI-7300A card.

clk_mode:

DO_CLK_TIMER: use timer1 output as output clock

DO_CLK_20M: use 20MHz clock as output clock

DO_CLK_10M: use 10MHz clock as output clock

DO_CLK_ACK: REQ/ACK handshaking

DO_CLK_TIMER_ACK: burst handshaking mode by

using timer1 output as output clock

DO_CLK_10M_ACK: burst handshaking mode by using

10MHz clock as output clock

DO_CLK_20M_ACK: burst handshaking mode by using

20MHz clock as output clock

start_mode:

DO_WAIT_TRIG: delay output data until DOTRIG is
active

DO_NO_WAIT: start output data immediately

DO_WAIT_FIFO:

delay output data until FIFO is not

almost empty

DO_WAIT_BOTH: delay output data until DOTRIG is

active and FIFO is not almost empty.

fifo_threshold: programmable almost empty threshold of both PORTB

FIFO and PORTA FIFO (if PORTA is set as output).
It is avaliavle only when start_mode is

DO_WAIT_FIFO

@ Return Code

NoError
PCICardNumErr
PCICardNotInit
InvalidDIOMode