Matlab and PICAXE comms

Anyone out there who knows how to make Matlab work with serial communications?

I'm in the early stages of writing a matlab program to do inverse kinematics for a leggy kinda robot, and I want to get it to send the numbers to a picaxe via rs232 - seems fairly straightforward?

My test program is behaving wierdly



Picaxe = serial('COM4');

set(Picaxe,'BaudRate', 9600, 'DataBits', 8, 'Parity', 'none','StopBits', 1, 'FlowControl', 'none'); 




B = fread(Picaxe)




clear Picaxe


The Picaxe code goes like this



serrxd w1

pause 50


goto main


The idea is that the picaxe gets the recieved data and sends it straight out again, but when the string is more than 1 character, as it is here, it just returns the first value, no sign of the others. Also I can't get it to terminate once Matlab has recieved the data, it just sits there until it times out and gets upset.

Feel free to ask if I haven't been clear, any and all help gratefully recieved...



Not familair with matlab

For knowing when it is end of string I send and test for a zero. That must be possible to program somehow in matlab.