In short is there a way/block that uses a workspace variable for it's output?
For context, I have a simulation of a train where there are multiple cars on the train. The inputs to this model are an array of buses. Each vehicle has over 100 inputs. So when testing we create a test stand that has the 20 or 30 most common controls for the lead vehicle, and the rest are set to a default value and don't change. However, sometimes during testing you realize you need to modify a different input or a input on a different vehicle. I was trying to work out a way of being able to modify one of those inputs without having to stop the simulation and add it in (can takes up to 1 minute to stop and start the model).
The plan was a variable that is read from the workspace, and then any inputs in the test stand are read in afterward. Therefore, the inputs in the test stand have priority over the workspace values. The issue is I cannot workout a way of reading in a variable from the workspace that can be changed during simulation. I have tried:
- A constant block with a workspace variable (which doesn't change values during simulation)
- A matlab function using the code below,(this does work but the performance impact is severe)
function y = readVehicleInputsBus(Z_VehicleInputsBusInit)
coder.extrinsic('evalin')
y = Z_VehicleInputsBusInit;
y = evalin('base','Z_VehicleInputsBusInit');
Is there a better way of accomplishing this?
