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C/C++ Library •59
W_9111_AD_HR_Aquire (ByVal cardNo As Integer, ad_data As
Integer) As Integer
@ Argument
cardNo: the card number of PCI-9111 card initialized.
ad_data: the 16bits A/D converted value. The data format can be
referred to section 5.1.6 for details.
@ Return Code
ERR_NoError
ERR_AD_AquireTimeOut
5.39 _9111_AD_INT_Start
@ Description
This function is used to initialize and start up the AD EOC
(end-of-conversion) interrupt transfer mode. This function could perform
A/D conversion N times with interrupt data transfer by using pacer trigger.
It takes place in the background which will not stop until the N-th
conversion has been completed or your program execute
_9111_AD_INT_Stop() function to stop the process.
After executing this function, it is necessary to check the status of the
operation by using the function _9111_AD_INT_Status(). While all the
specified count of data are acquired, the interrupt status will be changed
to “AD_INT_STOP”.The function can perform on single A/D channel
(autoscan is disable) or multiple A/D channels (autoscan is enable) with
fixed analog input range.
Note: The interrupt mode provided in this function is internal timer
source, therefore you must specify c1 & c2 as calling this
function. In addition, this function in this library supports just
one PCI-9111 card and provides only one ISR (interrupt
service routine) for processing the interrupt events. If
multi-9111 cards and multi-isr is necessary, users can modify
this library for your own purpose.
@ Syntax
C/C++ (DOS)
U16 _9111_AD_INT_Start ( U16 cardNo, U16 auto_scan, U16 ad_ch_no,
U16 ad_gain, U16 count, I16 far *ad_buffer, U16 c1, U16 c2)
C/C++ (Windows 95)
U16 W_9111_AD_INT_Start (U16 cardNo, U16 auto_scan, U16
ad_ch_no, U16 ad_gain, U16 count, I16 far *ad_buffer, U16 c1,
U16 c2)