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Realterm's
ActiveX interface was added so it could be controlled
from Matlab 5. Realterm is fast, runs independent of the
Matlab process, and is reliable. It lets you see the data
you are sending and receiving. As it runs in its own
process, there are none of the problems caused by Matlabs
single threaded-ness Matlab V6 added serial port support, but it has problems. |
(note that V6 of matlab has changed some activeX stuff. eg enumerations now return strings, not numbers. What follows is for V5.3)
hrealterm=actxserver('realterm.realtermintf'); % start Realterm as a server
hrealterm.baud=57600;
hrealterm.caption='Matlab Realterm Server';
hrealterm.windowstate=1; %minimized
hrealterm.PortOpen=1; %open the comm port
is_open=(hrealterm.PortOpen~=0); %check that it opened OK
hrealterm.displayas=2; %show hex in terminal window
hrealterm.CaptureFile='c:\temp\matlab_data.dat'
invoke(hrealterm,'startcapture'); %start capture
%do what you want here
invoke(hrealterm,'stopcapture');
try %try to close any we can in case they are faulty.
invoke(hrealterm,'close');
delete(hrealterm);
catch
fprintf('unable to close realterm')
end; %try
When you want to get data from an instrument, and process it in Matlab, I find it is easier to just capture data to a file with Realterm, then have Matlab read the file.
How: