LabJack U12, User Manual, Page: 28 / 36

Parameter Description:
Returns:
LabJack errorcodes or 0 for no error.
Inputs:
•
*idnum – Local ID, serial number, or -1 for first found.
• demo – Send 0 for normal operation, >0 for demo mode. Demo mode allows
this function to be called without a LabJack.
• resetCounter – If >0, the counter is reset to zero after being read.
Outputs:
• *idnum – Returns the local ID or –1 if no LabJack is found.
• *stateD – States of D0-D15.
•
*stateIO – States of IO0-IO3.
•
*count – Current value of the 32-bit counter (CNT). This value is read before the
counter is reset.
4.10 DigitalIO
Reads and writes to all 20 digital I/O. Execution time for this function is 20 milliseconds or less.
Declaration:
long __cdecl DigitalIO (
long *idnum,
long demo,
long *trisD,
long trisIO,
long *stateD,
long *stateIO,
long updateDigital,
long *outputD )
Parameter Description:
Returns:
LabJack errorcodes or 0 for no error.
Inputs:
•
*idnum – Local ID, serial number, or -1 for first found.
•
demo – Send 0 for normal operation, >0 for demo mode. Demo mode allows
this function to be called without a LabJack.
•
*trisD – Directions for D0-D15. 0=Input, 1=Output.
•
trisIO – Directions for IO0-IO3. 0=Input, 1=Output.
• *stateD – Output states for D0-D15.
• *stateIO – Output states for IO0-IO3.
• updateDigital – If >0, tris and state values will be written. Otherwise, just a read
is performed.
Outputs:
• *idnum – Returns the local ID or –1 if no LabJack is found.
•
*trisD – Returns a read of the direction registers for D0-D15.
•
*stateD – States of D0-D15.
•
*stateIO – States of IO0-IO3.
•
*outputD – Returns a read of the output registers for D0-D15.
4.11 GetDriverVersion
Returns the version number of ljackuw.dll.
Declaration:
float __cdecl GetDriverVersion ( void )