OPTO 22 PCI-AC51, Руководство пользователя

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USING THE SDK ON WINDOWS 2000/XP
PCI-AC51 User’s Guide
22
Pamux Utility Operations
The following utility functions are provided primarily for Visual Basic applications. These are not
Pamux-specific functions.
Bit Operations
Pack/Unpack Utility Operations
Function
Type
Function Parameter
Type
Parameter Description
void PamuxUtilBitSetTo
long
* pData These bit operations are useful in Visual
Basic applications to access individual bits
within an integer. The BitSetTo function either
sets or clears the specified bit based on the
value of bBitValue. Any non-zero value for
Data turns on the bit. The BitSet and BitClr
functions set and clear the specified bit. Bit
numbers start at zero for the least significant
bit (LSB).
The zero at the end of the parameter name
“BitNumber0” serves as a reminder of this
fact for anyone looking through the function
definitions in either the .BAS file or the .H
header files. PamuxUtilBitTest returns true if
bit number BitNumber0 in Data is set.
long
BitNumber0
long
bBitValue
void PamuxUtilBitSet
long
* pData
long
BitNumber0
void PamuxUtilBitClr
long
* pData
long
BitNumber0
long PamuxUtilBitTest
long
Data
long
BitNumber0
* Note for Visual Basic users: * indicates a “by reference” argument.
Function
Type
Function Parameter
Type
Parameter Description
void PamuxUtilBitPackArray2I
long
* DestInt
Converts an array of boolean (0
or not 0) values to a bit packed
integer.
long
SourceArray[]
long
Qty
void PamuxUtilBitUnPackI2Array
long
DestArray[]
Converts a bit packed integer to
an array of boolean (1 or 0) val-
ues.
Qty indicates the number of bits
to be packed or unpacked.
long
SourceInt
long
Qty
* Note for Visual Basic users: * indicates a “by reference” argument.