error when using matlab simulink block "level 2 Matlab S function''

• i want to read some data from a specific memory location using matlab simulink , so i create a simulink file as it shown *

• inside level2matlab S-function block , the file called data_read.m is included ,in this file i want to call only one function called answer *

function read_data(block) %MSFUNTMPL_BASIC A Template for a Level-2 MATLAB S-Function % The MATLAB S-function is written as a MATLAB function with the % same name as the S-function. Replace 'msfuntmpl_basic' with the % name of your S-function. % % It should be noted that the MATLAB S-function is very similar % to Level-2 C-Mex S-functions. You should be able to get more % information for each of the block methods by referring to the % documentation for C-Mex S-functions. % % Copyright 2003-2010 The MathWorks, Inc.

%% %% The setup method is used to set up the basic attributes of the %% S-function such as ports, parameters, etc. Do not add any other %% calls to the main body of the function. %% setup(block);

%endfunction

%% Function: setup =================================================== %% Abstract: %% Set up the basic characteristics of the S-function block such as: %% - Input ports %% - Output ports %% - Dialog parameters %% - Options %% %% Required : Yes %% C-Mex counterpart: mdlInitializeSizes %% function setup(block)

% Register number of ports block.NumInputPorts = 1; block.NumOutputPorts = 1;

% Setup port properties to be inherited or dynamic block.SetPreCompInpPortInfoToDynamic; block.SetPreCompOutPortInfoToDynamic;

% Override input port properties block.InputPort(1).Dimensions = 1; block.InputPort(1).DatatypeID = 0; % double block.InputPort(1).Complexity = 'Real'; block.InputPort(1).DirectFeedthrough = true;

% Override output port properties block.OutputPort(1).Dimensions = [5 1]; block.OutputPort(1).DatatypeID = 0; % double block.OutputPort(1).Complexity = 'Real';

% Register parameters block.NumDialogPrms = 0;

% Register sample times % [0 offset] : Continuous sample time % [positive_num offset] : Discrete sample time % % [-1, 0] : Inherited sample time % [-2, 0] : Variable sample time % block.SampleTimes = [0 0]; block.SampleTimes = [0 0]; % Specify the block simStateCompliance. The allowed values are: % 'UnknownSimState', < The default setting; warn and assume DefaultSimState % 'DefaultSimState', < Same sim state as a built-in block % 'HasNoSimState', < No sim state % 'CustomSimState', < Has GetSimState and SetSimState methods % 'DisallowSimState' < Error out when saving or restoring the model sim state block.SimStateCompliance = 'DefaultSimState';

%% ----------------------------------------------------------------- %% The MATLAB S-function uses an internal registry for all %% block methods. You should register all relevant methods %% (optional and required) as illustrated below. You may choose %% any suitable name for the methods and implement these methods %% as local functions within the same file. See comments %% provided for each function for more information. %% -----------------------------------------------------------------

block.RegBlockMethod('PostPropagationSetup', @DoPostPropSetup); block.RegBlockMethod('InitializeConditions', @InitializeConditions); block.RegBlockMethod('Start', @Start); block.RegBlockMethod('Outputs', @Outputs); % Required block.RegBlockMethod('Update', @Update); block.RegBlockMethod('Derivatives', @Derivatives); block.RegBlockMethod('Terminate', @Terminate); % Required

%end setup

%% %% PostPropagationSetup: %% Functionality : Setup work areas and state variables. Can %% also register run-time methods here %% Required : No %% C-Mex counterpart: mdlSetWorkWidths %% function DoPostPropSetup(block) block.NumDworks = 1;

block.Dwork(1).Name            = 'x1';
block.Dwork(1).Dimensions      = 1;
block.Dwork(1).DatatypeID      = 0;      % double
block.Dwork(1).Complexity      = 'Real'; % real
block.Dwork(1).UsedAsDiscState = true;

%% %% InitializeConditions: %% Functionality : Called at the start of simulation and if it is %% present in an enabled subsystem configured to reset %% states, it will be called when the enabled subsystem %% restarts execution to reset the states. %% Required : No %% C-MEX counterpart: mdlInitializeConditions %% function InitializeConditions(block)

%end InitializeConditions

%% %% Start: %% Functionality : Called once at start of model execution. If you %% have states that should be initialized once, this %% is the place to do it. %% Required : No %% C-MEX counterpart: mdlStart %% function Start(block)

block.Dwork(1).Data = 0;

%endfunction

%% %% Outputs: %% Functionality : Called to generate block outputs in %% simulation step %% Required : Yes %% C-MEX counterpart: mdlOutputs %% function Outputs(block)

j=answer; block.OutputPort(1).Data =j ;

%end Outputs

%% %% Update: %% Functionality : Called to update discrete states %% during simulation step %% Required : No %% C-MEX counterpart: mdlUpdate %% function Update(block)

block.Dwork(1).Data = block.InputPort(1).Data;

%end Update

%% %% Derivatives: %% Functionality : Called to update derivatives of %% continuous states during simulation step %% Required : No %% C-MEX counterpart: mdlDerivatives %% function Derivatives(block)

%end Derivatives

%% %% Terminate: %% Functionality : Called at the end of simulation for cleanup %% Required : Yes %% C-MEX counterpart: mdlTerminate %% function Terminate(block)

%end Terminate

• the answer function code * function j=answer% this function is made to transfer matrix j data j with dimensions 5*1% from one matlab session to another session by using memory mapping% function built in matlab

%this function reads the data from the memory and shows it as an output %firstly run 'send' function to write the data into the memory then run %'answer' function to read these data

%Create a Full File Name %myfolder\mysubfolder\myfile.m filename = fullfile(tempdir, 'talk_answer.dat');

% Create the communications file if it is not already there. if ~exist(filename, 'file') [f, msg] = fopen(filename, 'wb'); if f ~= -1 fwrite(f, zeros(1,256), 'double'); fclose(f); else error('MATLAB:demo:answer:cannotOpenFile', ... 'Cannot open file "%s": %s.', filename, msg); end end

% Memory map the file. m = memmapfile(filename, 'Writable', true, 'Format', 'double'); %read data from the file and j=m.data(1:5);

first i want to build this model then i run it when i press in build model this error appears

the error is "The corresponding 'read_data.tlc' file for the MATLAB S-function 'read_data' in block 'untitled/Level-2 MATLAB S-Function' must be located in the current working directory, the MATLAB S-function directory 'F:\thesis\send and recieve data', or the directory 'F:\thesis\send and recieve data\tlc_c'"

but i don`t know how i solve this problem because i am still a beginner in simulink please help me