ADLINK cPCI-7252 - Manual (Page 44)

34 C/C++ Libraries
5.5 _7250_DI, _7252_DI
@ Description
This function is used to read data from the digital input port. There
are eight 8-bit digital inputs on the PCI-7250 or PCI-7251
extended board. You can obtain all 32 input data from using the
_7250_DI function.
@ Syntax
C/C++ (DOS)
U16 _7250_DI (U16 cardNo, U16 diPortNo, U16
*diData)
U16 _7252_DI (U16 cardNo, U16 *diData)
C/C++ (Windows 95)
U16 W_7250_DI (U16 cardNo, U16 diPortNo, U16
*diData)
U16 W_7252_DI (U16 cardNo, U16 *diData)
Visual Basic (Windows 95)
W_7250_DI (ByVal cardNo As Integer, ByVal
diPortNo As Integer, diData As Integer) As
Integer
W_7252_DI (ByVal cardNo As Integer, diData As
Integer) As Integer
@ Arguments
cardNo: card number selected
diPortNo: Digital Input Channel No, the constant is:.
Note: This argument is not necessary for cPCI-7252
diData: return 8-bit value from digital port.
DI_PORT0 0x00 Access the 8 Digital Input of PCI-7250
DI_PORT1 0x01 Access the 8 Digital Input of Expansion Board PCI-7251#1
DI_PORT2 0x02 Access the 8 Digital Input of Expansion Board PCI-7251#2
DI_PORT3 0x03 Access the 8 Digital Input of Expansion Board PCI-7251#3