Hi Charles,
Yes, it is possible to manually define the struct which doesn't import as a bus using default types. You can define a custom bus object that contains all the fields in the structure and use that bus object.
Here is an example of how you can manually define the packetbuffer struct as a bus object:
% Define the packet bus object
PacketBus = Simulink.Bus.createObject(packet);
% Define the packetbuffer bus object
PacketBufferBus = Simulink.Bus;
PacketBufferBus.Elements = {
Simulink.BusElement('ridx', 'uint8'),...
Simulink.BusElement('widx', 'uint8'),...
Simulink.BusElement('bufferLen', 'uint8'),...
Simulink.BusElement('buffer', 'BusObject', PacketBus),...
};
Regarding the second question, you can drive signals from blocks from the callback/event using Simulink's Signal-Based Function support feature. You can create a Simulink subsystem that contains the code that needs to be executed during the callback/event and connect the input and output signals of the subsystem to the relevant blocks. Then, in the callback/event, you can invoke this subsystem using the sim command. Here's an example:
function myCallback(block, event)
% Block callback function
% Invoke the subsystem to execute the code
sim('mySubsystem');
end
In this example, mySubsystem is the Simulink subsystem that contains the code that needs to be executed during the callback/event.
