How do I create an output port for a C caller block?

I have having issue when adding a point variable to a function that is used in c caller.

If I set this variable as an output using the block paramers dialog block, I get a compiler error that it does not know the size of the data type.

If I try to set the size = 1, it always reverts the size back to -1.

I need to get resolution on this issue ASAP.

thanks.

Answer 1

[Ganesh Regoti]

Hi,

As per my understanding, you are creating a point variable in the function and trying to return it. But it is not possible as of now. Instead you can do the following

1. Send the point variable as a argument to the function.
2. In block parameters of Caller block, change the scope of the variable to InputOutput format.

CCaller block -> block parameters -> Port Specification -> Scope

1. Refresh the caller block, the input and output ports get updated.

Hope this helps!