Simulink lookup indexing exceeding size on F28388

Hello guys,

I'm working with a large table data and I want to use it on the F28388.

I get the following error:

Error:'Laboratorio_F28388/Main System/Control System1/Torque Controller/2-D Lookup Table1' uses a matrix with 64516 elements, which is larger than the maximum value of 'int' for the specified target.

The F28388 has a C28x 32bit CPU, but it's only using 16bit for addressing.

There are any solution that can access more elements?

I appreciate anybody who can help me to sort out this issue. Thanks in advance.

Regards,

Jesús

[Fangjun Jiang]

16 bit should be able to address 65536 elements. Somewhere to specify using uint16 for indexing?

intmax('uint16')

ans = uint16
65535

[Walter Roberson]

However, given that it specifically mentions 'int' and 'int' is signed, it sounds as if the limit is 32767 for some strange reason.

[Jesús]

yeah, seems simulink is using signed int for some strange reason. I don't see why if the pointer size is 32bit the indexing is done with 16bits. Do an option exist to change that?

[Jesús]

@Fangjun Jiang yeah, i'm looking for an option to change the index type

[Fangjun Jiang]

This post mentioned that "You can use pointer arithmetic with negative values, hence an array index can be negative."

https://www.mathworks.com/support/search.html/answers/101992-why-do-i-see-a-cast-to-signed-integer-on-my-unsigned-array-index.html