Thread Subject:

Difference between Embedded Matlab and Matalab?

How is embedded matlab different from Matlab?Is it different than the embedded block of simulink??I just came across the user Guide on Embedded Matlab which stated it is a subset of Matlab.But in what sense.Can some one give any link to some online example of how it actually works. Sorry If I sound Silly but I am eager to know.Please Answer.

MATLAB Coder is a tool for converting m-code to c or c++.
Since much of MATLAB's functionality (e.g. anything relying on java or COM, but other things too) cannot be converted to c, any m-code that uses that functionality will not work with MATLAB Coder.
Hence MATLAB Coder only supports a subset of the MATLAB language.

The main difference between MATLAB Coder and a MATLAB Fcn block in Simulink is the interface to the code -- one runs in MATLAB the other in Simuink.
Prior to R2012a they used different editors, although as of R2012a the MATLAB Fcn block now uses the standard MATLAB Editor.

Lots of examples can be found at:
http://www.mathworks.com/help/toolbox/coder/exampleindex.html

Phil.

Thank you phil.
I have one more doubt.
I simulated a speed and position estimation block in Simulink.It estimates speed and position using an encoder.Then i programmed it using embedded matlab.
But m not able to write code for detect change block.
I want a pulse at every transition of a signal form 0 to 1 and 1 to 0.I am using the logic that when the previous values and present values mismatch then a pulse should be generated.But i am not getting how to compare the previous value sampled at the predefined sample time and the present value in the current sample ??

The difference between the input and output of a Unit Delay block will tell you if a signal has changed between time steps.

Phil.

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <jqt7pn$e9e$1@newscl01ah.mathworks.com>...
> The difference between the input and output of a Unit Delay block will tell you if a signal has changed between time steps.
>
> Phil.

I do not want to do that using a simulink block. i am already using an edge detector I want to do it by programming using embedded matlab block.

"Phil Goddard" <phil@goddardconsulting.ca> wrote in message <jqt7pn$e9e$1@newscl01ah.mathworks.com>...
> The difference between the input and output of a Unit Delay block will tell you if a signal has changed between time steps.
>
> Phil.

I do not want to do that using a simulink block. i am already using an edge detector I want to do it by programming using embedded matlab block.

You need to have a persistent variable inside the embedded block so that you can keep track of the previous value.
Search the doc the Embedded MATLAB and persistent variables.

Phil.