Thread Subject:

error on using variables and matlab function within embedded func. simulink component

Hello all,

i'm using embedded function component within simulink, but when i use aviinfo() or mmreader() i get an error message "is not supported by Embedded MATLAB for code generation."
this also takes place when using randint() or randi()

when declaring variable that is not persistant and assign value to it
i got this error "Undefined function or variable"

any idea how can i solve this...


thanks..

Any functions not part of the Embedded MATLAB subset must be defined as being eml.extrinsic (or more recently coder.extrinsic).
Search the doc for those terms.

Phil.

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <kgijjo$n95$1@newscl01ah.mathworks.com>...
> Any functions not part of the Embedded MATLAB subset must be defined as being eml.extrinsic (or more recently coder.extrinsic).
> Search the doc for those terms.
>
> Phil.


how can i define it as being eml.extrinsic ???

> how can i define it as being eml.extrinsic ???

There is a brief example here:
http://www.goddardconsulting.ca/simulink-using-embedded-matlab.html

But as per my original message,

 > Search the doc for those terms.

Phil.

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <khkrnb$32p$1@newscl01ah.mathworks.com>...
>
> > how can i define it as being eml.extrinsic ???
>
> There is a brief example here:
> http://www.goddardconsulting.ca/simulink-using-embedded-matlab.html
>
> But as per my original message,
>
> > Search the doc for those terms.
>
> Phil.


thanks alot Phil... i will check it out right now..
one more question please..

do you have any idea how can i convert matlab file into vhdl component...

thanks alot..
Niveen

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <khkrnb$32p$1@newscl01ah.mathworks.com>...
>
> > how can i define it as being eml.extrinsic ???
>
> There is a brief example here:
> http://www.goddardconsulting.ca/simulink-using-embedded-matlab.html
>
> But as per my original message,
>
> > Search the doc for those terms.
>
> Phil.

when i tried eml.extrinsic('');for aviinfo() and aviread() methods, it works and the error used to occure is no longer appearing...
but i couldn't retrieve data from output object
like this

info = aviinfo(video);
offset_frame =info.NumFrames; %1

mov = aviread(video , offset_frame );
image = (mov.cdata);%2

i got error for both statements 1 & 2
Attempt to extract field 'NumFrames' from 'mxArray'.
Attempt to extract field 'cdata' from 'mxArray'.

any idea how to overcome this plzzz..

thanks alot..
Niveen..

I don't have any direct experience with aviinfo or aviread within a MATLAB Fcn block but suspect that because they return objects, and you need to call the methods (i.e. functions) that manipulate those objects you'd need to define all the methods as being eml.extrinsic too.

Alternatively, you will most likely find it easier to write an m-code S-Function to do whatever you are trying to do.

Phil.

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <khlusa$nf8$1@newscl01ah.mathworks.com>...
> I don't have any direct experience with aviinfo or aviread within a MATLAB Fcn block but suspect that because they return objects, and you need to call the methods (i.e. functions) that manipulate those objects you'd need to define all the methods as being eml.extrinsic too.
>
> Alternatively, you will most likely find it easier to write an m-code S-Function to do whatever you are trying to do.
>
> Phil.

thanks alot Phil..

but i don't konw how to write an m-code S-Function.. :((

one more question plzz..
do you 've any idea how to convert matlab code to vhdl..
i've been told that hdl coder do something like that but its drop downlist is dimmed with only one single choice which is "Navigate to code" although i've ensured that i'm having hdl coder by running this command "ver('hdlcoder')"

Niveen