Unkown error in stateflow simulink

Hey all!!

I am trying to simulate railway traffic signal having 2 platforms. I am encountering an error which I am not able to understand.

Kindly someone please help me build this model. Please reply if you are not able to understand my symbols.

Answer 1

[Mark McBroom]

It looks like you are attempting to access P1 and P2 in multiple state machines. You have defined P1 and P2 as global variables in your statecharts. YOu need to add a global Data Store Memory in the Simulink model for P1 and P2 that the statecharts can access.

Thanks.

Mark.

[Mrudul Agrawal]

How can I do that?

And tell me one more thing that I want to make matlab ui that will be represent the traffic light by taking the signal input

[Mark McBroom]

https://www.mathworks.com/help/simulink/slref/datastorememory.html

For UI, easiest approach is to use Simulink Dashboard blocks:

https://www.mathworks.com/help/simulink/ug/tune-and-visualize-your-model-with-dashboard-blocks.html

if you need more capability that is available in Dashboard blockset, you can create your own MATLAB UI using Application Designer, but this is more work. https://www.mathworks.com/help/vnt/ug/developing-an-app-designer-app-for-a-simulink-model-using-can.html

[Mrudul Agrawal]

Thanks Mark

My model is working now but not upto the mark. I want the train should go to platform 2 when platform 1 is occupied and vice versa but it is occupying only 1 platform at a time. Can you please help me with this??

I am attaching the updated copy of the model