Hey,
I'm having some Problems with the Serial Communication from Matlab to an Arduino.
It's supposed to be asynchronus read Operation (input from user) so I am using the 'BytesAvaiableFcn'.
Problem is I always get an Errormsg:
??? Error using ==>
mycallbacktest
Too many input arguments.
Error in ==> instrcb at 36
feval(val{1}, obj,
eventStruct,
val{2:end});
Warning: The BytesAvailableFcn
is being disabled. To enable the
callback property
either connect to the hardware
with FOPEN or set the
BytesAvailableFcn property.
My Matlab code for initalizing the serial Port is:
s = serial('com5');
set(s, 'BaudRate', 38400,'InputBufferSize', 1024, 'OutputBufferSize', 1024,'timeout',100);
s.BytesAvailableFcnMode = 'byte';
s.BytesAvailableFcnCount = 3;
s.BytesAvailableFcn ={'mycallbacktest',s};
fopen(s);
pause;
To test my callback function I got this code
function [] = mycallbacktest(s)
ardudata = fscan(s);
butsym{1,1} = '!';
butsym{1,2} = '?';
if strcmp(ardudata(1),butsym{1,1})
disp('case1')
elseif strcmp(ardudata(1),butsym{1,2})
disp('case2')
else
disp('case3')
pause(1)
end
The Data from the Arduino:
case 1:
case 2:
case 3:
in case 3 I get a new line Char and in the next line a 3 digit number in the range from 001-090
