Simulink Realtime - is it possible to change parameter dimensions?

I have a realtime model that is using Look-up Tables, when the model is loaded on the target (SpeedGoat) I want to change the Breakpoints & Table using setparam command from a Matlab App.

This works OK if I use a new parameter of the same size, but if I want to reduce/extend the number of points, I get an error:

>> setparam(tg,'','miX_pos_vehNotchBP2_km',ones(1,16))

Error using slrealtime.Target/throwErrorWithCause

Cannot set 'miX_pos_vehNotchBP2_km' parameter value on target 'Speedgoat': Actual dimensions are '1 16',

expected dimensions are '1 17'.

I also tried feeding the parameters into the Lookup Table (using 'Input Port' rather than 'Dialog') but get the same error.

So my question is - is there anyway I changing the parameter dimensions when the model is loaded on the target? or do I need to used 'resample' to resize my new parameter?

Answer 1

[Dimitri MANKOV]

Hi Sandra,

I don't think this is possible: once the code is generated, the dimensions are fixed as far as I know. But you could indeed use the resample function, or have several lookup tables of different dimentsions in your model, and then switch between them using a Multiport Switch block, for example.

I hope this is helpful!