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

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 C/C++ Library 

count: 

value to write, only 8 LSBs are effective 

ERR_NoError 

 

5.27  _9111_Get_8254 

This function is used to read PCI-9111 8254 Programmable Timer. The 
read value are stored in count. 

U16 _9111_Get_8254 (U16 cardNo, U16 ChannelNo, U8 *count)   

U16 W_9111_Get_8254 (U16 cardNo, U16 ChannelNo, U8 *count)   

W_9111_Get_8254 (ByVal cardNo As Integer, ByVal ChannelNo As 
Integer, count As Byte) As Integer 

cardNo: 

The card number of PCI-9111 card initialized. 

Tmr_ch:  

Port of 8254 Timer, the value is within 0 to 3. 

count: 

value read from 8254 programmable timer, only 8 LSBs are 
effective 

ERR_NoError 
 

5.28  _9111_AD_Timer 

This function is used to set the Timer #1 and Timer#2. Timer#1 and 
Timer#2 are used as frequency dividers for generating constant A/D 
sampling rate dedicatedly. It is possible to stop the pacer trigger by setting 
any one of the dividers as 0. Because the AD conversion rate is limited 
due to the conversion time of the AD converter, the highest sampling rate 
of the PCI-9111 can not be exceeded 110 KHz. The multiplication of the 
dividers must be larger than 20. 

U16 _9111_AD_Timer (U16 cardNo, U16 c1, U16 c2)  

U16 W_9111_AD_Timer (U16 cardNo, U16 c1, U16 c2)