Measurement Computing Personal Daq rev.6.0 - Manual (Page 154)

B-22 API Commands Appendix B, 887095 Personal Daq User’s Manual
daqGetDriverVersion
DLL Function daqGetDriverVersion(PDWORD version);
C daqGetDriverVersion(PDWORD version);
Visual BASIC VBdaqGetDriverVersion&(version&)
Delphi daqGetDriverVersion(var version:DWORD)
Parameters version Pointer to the version number of the current device driver.
Returns DerrNoError No error
See Also
Program References ADCEX1.C, FREQEX1.C, PULSEEX1.C, MULTEX1.C, DIGEX1.C, INITEX1.C, DAQEX.FRM (VB),
DAQEX.PAS (Delphi)
Used With All devices
Description
daqGetDriverVersion allows you to get the revision level of the driver currently in use.
daqGetLastError
DLL Function daqGetLastError(DaqHandleT handle, daqError *errCode);
C daqGetLastError(DaqHandleT handle, DaqError *errCode);
Visual BASIC VBdaqGetLastError&(ByVal handle&, errCode&)
Delphi daqGetLastError(handle:DaqHandleT; var errCode:daqError);
handle Handle to the device Parameters
*errCode Returned last error code
Returns DerrNoError No error
See Also daqDefaultErrorHandler, daqProcessError, daqSetDefaultErrorHandler
Program References None
Used With All devices
Description
daqGetLastError allows you to retrieve the last error condition registered by the driver.
daqIORead
DLL Function daqIORead(DaqHandleT handle, daqIODeviceType devType, daqIODevicePort devPort, DWORD
whichDevice, daqIOExpansionPort whichExpPort, PDWORD value);
C daqIORead(DaqHandleT handle, DaqIODeviceType devType, DaqIODevicePort devPort, DWORD
whichDevice, DaqIOExpansionPort whichExpPort, PDWORD value);
Visual BASIC VBdaqIORead&(ByVal handle&, ByVal devType&, ByVal devPort&, ByVal whichDevice&,
ByVal whichExpPort&, value&)
Delphi daqIORead(handle:DaqHandleT; devType:daqIODeviceType; dvPort:daqIODevicePort;
whichDevice:DWORD; whichExpPort:daqIOExpansionPort; var value:DWORD);
handle Handle to the device to perform the IO read
devType IO Device type
devPort IO port selection
whichDevice IO device instance to read from
whichExpPort IO device expansion port to read from
Parameters
value IO value read
Returns DerrNoError No error
See Also daqIOReadBit, daqIOWrite, daqIOWriteBit
Program References DIGEX1.C, DAQEX.FRM (VB), DAQEX.PAS (Delphi)
Used With All devices except Personal Daq/54
Description
daqIORead allows you to read the specified port on the selected device. The read operation will return the current state of the port in the
value parameter. Normally, if the selected port is a byte-wide port, the port state will occupy the low-order byte of the value parameter.
Digital IO channels for the port correspond to each bit within this low-order byte. If the bit is set, it indicates the channel is in a high state. If
the bit is not set, the channel is indicated to be in a low state.