RTTINIT

Purpose:

Places a real time task in the queue for execution.

Syntax:

RTTINIT("rttaskname")

"rttaskname"

-

A string. The name of the real time task.

Returns:

An integer task number for use in subsequent RTT functions.

Example:

Start first DADiSP to simulate a real time data source:

 

rttinit("rtwrite")

 

Start second DADiSP to read real time data:

 

rtnum = rttinit("rtread")

 

The series generated by the first DADiSP is read synchronously by the second DADiSP. The real time data appears in W1 of the second DADiSP.

 

Terminate the reading task:

 

rttterm(rtnum)

Remarks:

The first DADiSP writes a binary series to the file named RTDATA.DAT. An ASCII value of 1.0 is also written to the text file GATE.TXT to indicate new data is available. New data is not written to RTDATA.DAT until an ASCII value of 0.0 is detected in GATE.TXT.

 

The second DADiSP polls GATE.TXT. If the value is 1.0, the file RTDATA.DAT is read and the result is placed in W1. A value of 0.0 is then written to GATE.TXT to indicate that the new data was read.

 

Both the RTREAD and RTWRITE are performed in the background via RTTINIT.

See Also:

ASCALE

RTREAD

RTTPAUSE

RTTTERM

RTWRITE