Scripting Guide - SAS

470 Extending JMP Chapter 14
Real-Time Data Capture
feed = Open Datafeed(
Connect(
Port( "com1:" | "com2:" | "lpt1:" | ... ),
Baud( 9600 | 4800 | ... ),
Data Bits( 8 | 7 ),
Parity( None | Odd | Even ),
Stop Bits( 1 | 0 | 2 ),
DTR_DSR( 0 | 1 ), // Data Terminal Ready
RTS_CTS( 0 | 1 ), // Request To Send | Clear To Send
XON_XOFF( 1 | 0 ) // Transmitter On | Transmitter Off
)
);
This command creates a scriptable data feed object and stores a reference to it in the global variable feed.
The Connect argument starts up a thread to watch a communications port and collect lines. The thread
collects characters until it has a line, and then appends it to the line queue and schedules an event to call the
script.
Note: For Datafeed purposes, a line of data is a single value (a datum). A line is not to
be confused with a data table row, which can contain values for many variables on a
subject.
Set Script attaches a script to the Datafeed object. This script is triggered by the On DataFeed handler
whenever a line of data arrives. The argument for Set Script is simply the script to run, or a global
containing a script.
feed = Open Datafeed( set script( myScript ) );
feed = Open Datafeed( set script( Print( feed