How to declare a function as extrinsic and execute it in Simulink through Matlab Function block

Hello everyone,

I wanted to call a Java function using the Matlab function block in Simulink however i got this error:

Error:Undefined function or variable 'java.security.MessageDigest.getInstance'.

Function 'MATLAB Function' (#24.499.549), line 14, column 20:

"java.security.MessageDigest.getInstance('SHA-256')"

To solve it, I thought about packaging the Java call into a separate function and store it in the MATLAB Function block with coder.define extrinsic however, I do not know how to to declare a function as extrinsic and implement this in simulink.

If anyone has a solution, I would be very happy about your support.

Thank you in advance for your help.

Answer 1

[Paul]

Try using coder.extrinsic to declare the wrapper .m function as extrinsic in the Matlab Function block and call the java function from the wrapper function.

[Z]

Thank you !