ERROR : "Expected a value representable in the C type 'int'. Found 108301 instead."

I'm using MATLAB function blocks in Simulink. but there were some errors about data type. I can't understand the error messages. what made this error?

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[Prajith Chilummula]

As you said it may be due to some datatype mismatch. But I am unable to make any conclusions from this error log. So it would be better if you share the matlab function code or the model to further investigate on this.

[Peter S]

I am having the same error message with a very simple embedded MATLAB function in Simulink:

function AT_OnTime = ParseCmd(AT_OnCmd,time,dt)
    ind = time/dt+1;
    AT_OnTime = AT_OnCmd(ind,2);
end

[Jinhang Li]

Have you solved this problem, bro? I am been puzzled by the same problem for several days while dealing with a 4-D signal. This error log is really confusing.

[Michal Semonský]

Hi, Peter S,

the error could be in your variable ind data type - this should be set as integer type by using functions like ind=uint8(ind), uint16(), uint32(), ...depends on the maximal value which ind could be (for uint16 it is 65535). Variable AT-OnCmd seems like a matrix and the indexing variable should be always integer non-negative type.

[Amir]

I have had the same problem in simulink recently. The error is due to indexing an array with a variable that isn't an intiger. For example, you may have used Tau_Plaus = tk(j+1) in one of your blocks where j is 1.00000. I would fix this problem by using tk(round(j+1)).

[hanyu]

thanks,it's useful

Answer 1

[Andrew Sol]

You may try use block "Data Type Conversion", and convert input signal for MATLAB Fcn Block to uint8.