HP (Hewlett-Packard) PCI-9111DG/HR Manual De Usuario

C/C++ Library 

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59 

W_9111_AD_HR_Aquire (ByVal cardNo As Integer, ad_data As 
Integer) As Integer 

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.  

ERR_NoError 
ERR_AD_AquireTimeOut 

 

5.39  _9111_AD_INT_Start 

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. 

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)  

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)