Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 268)

4.5-38 Daq API Command Reference
908794
Programmer’s Manual
daqIOWriteBit
Also See: daqIORead, daqIOReadBit, daqIOWrite
Format
daqIOWriteBit(handle, devType, devPort, whichDevice, whichExpPort, bitNum,
bitValue)
Purpose
daqIOWriteBit writes a specified bit on the selected device and port.
Parameter Summary
Parameter Type Description
handle DaqHandleT Handle of the device to perform an IO write to
devType DaqIODeviceType
IO device type
devPort DaqIODevicePort IO device port selection
whichDevice DWORD IO device selection
whichExpPort DaqIOExpansionPort IO device expansion port address
bitNum DWORD Bit number on port to write
bitValue BOOL Bit value to write (true – high, false – low)
Parameter Values
handle: obtained from the daqOpen function
devType: see table below
devPort: see table below
whichDevice: valid values range from 0 to 171
whichExpPort: see table below
bitNum: valid value range from 1 to 16
bitValue: valid values are either true (
≠ 0) or false ( = 0)
Parameter Type Definitions
devType-(DaqIODeviceType)
Definition Description
DiodtLocalBitIO P2 – Local addressing by bit
DiodtLocal8255
P2 – Local addressing on DaqBook/2000 Series, DaqBoard/2000 Series and cPCI
DaqBoard/2000c Series devices
DiodtP2Local8 P2 – Local addressing by byte
DiodtP3LocalDig16 P3 – Local addressing for HS 16-bit Dig I/O
DiodtP3LocalCtr16 P3 – Local addressing of 16-bit counters
DiodtP2Exp8 P2 – Expansion addressing by byte
DiodtExp8255 DBK20, DBK21
DiodtDbk23 DBK23
DiodtDbk24 DBK24
DiodtDbk25 DBK25