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How to pass a variable from one file to another?

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Hi all, I have a matlab function block in Simulink with a feedback. The input to the function is a constant that changes with the time. The function calls another function includes ode15s (File1) that must get their equations from another file (File2). I want to pass the value of B from the main matlab function file to File2 to be used there. I used global but that did not work. Any idea?
Matlab Function File:
function y = fcn(B)
...
y=File1
%-----------------------------
File 1
function [t,x]=File1
....
[t,x] = ode15s(@File2,tspan,x0,opt);
%-----------------------------------
File2
function out= File2(t,x)
...
out=[some equations that use "B" as a constant]
%-----------------------------------------------------
%
  3 Commenti
Ismaeel
Ismaeel il 20 Feb 2017
"The GLOBAL declaration must precede any use of the variable B."
Ismaeel
Ismaeel il 20 Feb 2017
"Global declaration not resolved to a Data Store Memory block registered via the Ports and Data Manager."

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Risposta accettata

Walter Roberson
Walter Roberson il 20 Feb 2017
  7 Commenti
Ismaeel
Ismaeel il 21 Feb 2017
I am trying to upload a picture of the error but there is something prevents it after uploading it. Anyway, this is what i got: Nested functions are not supported.
Function 'MF' (#83.127.128), line 8, column 15: "f" Launch diagnostic report.
Walter Roberson
Walter Roberson il 22 Feb 2017
If you have multiple functions in the same file, make sure each is terminated with "end" as soon as it is finished.
function y = fcn(B)
...
y = File1(B)
end
%-----------------------------
function [t,x] = File1(B)
....
[t,x] = ode15s(@(t,x) File2(t,x,B), tspan, x0, opt);
end
%-----------------------------------
function out = File2(t, x, B)
...
out=[some equations that use "B" as a constant]
end
%----------------------------------------------------

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Più risposte (1)

Ismaeel
Ismaeel il 20 Feb 2017
Also, I added a block "To Workspace" with the name "B" but still B is undefined.

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