How to change the value of variables in base workspace within a function?
13 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
KAKI AYAM
am 28 Jun. 2019
Kommentiert: Shameer Parmar
am 1 Jul. 2019
Hi,
I am trying to merge a number of command lines instructions into a function. But I have noticed that instructions which I can run without errors on command lines could not be run within a function. For example, I could write to registers below at the command line such as below -
NPSN.REGISTER.LOAD.LOAD_TYPE1.write = 0;
NPSN.REGISTER.LOAD.LOAD_TYPE2.write = 1;
The same command lines will not have any effect within a function due to workspace segregations. While I could understand that concept, does Matlab provides anyway for us to change the value of these registers within a function?
These registers are actual hardware registers in the controllers which are written through Matlab.
Thanks.
1 Kommentar
Akzeptierte Antwort
Shameer Parmar
am 28 Jun. 2019
Yes, When you use function then it has its own workspace.
Here you can use following command to assign or to execute the variable from function to base workspace..
assignin('base','NPSN.REGISTER.LOAD.LOAD_TYPE1.write','0');
assignin('base','NPSN.REGISTER.LOAD.LOAD_TYPE2.write','1');
OR try this..
evalin('base','NPSN.REGISTER.LOAD.LOAD_TYPE1.write = 0');
evalin('base','NPSN.REGISTER.LOAD.LOAD_TYPE2.write = 1');
Also check this example..
v = evalin('base', 'var')
This example extracts the value of the variable 'var' in the MATLAB base workspace and captures the value in the local variable v..
2 Kommentare
Shameer Parmar
am 1 Jul. 2019
try replacing '0' or '1' with your local variable names..
try with this command..
evalin('base','NPSN.REGISTER.LOAD.LOAD_TYPE1.write = LocalVarName');
Weitere Antworten (1)
Steven Lord
am 28 Jun. 2019
What is NPSN? Specifically, is it a handle object that has properties and methods that allow you to query and manipulate a physical hardware device? You can check this with:
isa(NPSN, 'handle')
If it is a handle object, pass it into your function as an input argument. Because handle objects have reference semantics the behavior described in the "Handle Objects Modified in Functions" section on that documentation page sounds like what you want.
0 Kommentare
Siehe auch
Kategorien
Mehr zu Write C Functions Callable from MATLAB (MEX Files) finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!