User Manual

Note that this is a simplified version of the lower level function DigitalIO, which operates on all

20 digital lines. The DLL (ljackuw) attempts to keep track of the current direction and output

state of all lines, so that this easy function can operate on a single line without changing the

others. When the DLL is first loaded, though, it does not know the direction and state of the

lines and assumes all directions are input and output states are low.

Declaration:

long EAnalogIn ( long *idnum,

long demo,

long channel,

long readD,

long *state )

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.

• channel – Line to read. 0-3 for IO or 0-15 for D.

• readD – If >0, a D line is read as opposed to an IO line.

Outputs:

• *idnum – Returns the local ID or –1 if no LabJack is found.

• *state – The selected line is TRUE/Set if >0. FALSE/Clear if 0.

4.5 EDigitalOut

Easy function. This is a simplified version of DigitalIO that sets/clears the state of one digital

output. Also configures the requested pin to output and leaves it that way. Execution time for

this function is 20 milliseconds or less.