Use C-caller with Custom Libraries from texas C2000 (c28x_vcu0​_library_f​pu32.lib)

Hello,

I’m trying to use a c-caller block in order to use the custom FFT function developed by texas for the C2000 µC family.

Before Simulink, I try the custom FFT function in Code Composer Studio (CCS is IDE from texas) and it works well:

Note: the linker need the library "c28x_vcu0_library_fpu32.lib" to be included in the project proprieties of CCS.

The custom FFT function are not described in a .c source file but in a .lib library.

In Simulink I include the library "c28x_vcu0_library_fpu32.lib" in

Model Configuration Parameters > Simulation Target > Libraries

But it causes errors:

### Build procedure for model: 'c28x_CAN_Tx_Ccaller_Memoshare' aborted due to an error.

Error(s) encountered while building custom code simulation target for model 'c28x_CAN_Tx_Ccaller_Memoshare'. Fix the errors in your custom code or disable 'Import custom code' if your custom code has incompatibilities.

Caused by:

• c:\ti\c2000\c2000ware_2_00_00_02\libraries\dsp\vcu\c28\lib\c28x_vcu0_library_fpu32.lib: member c:\ti\c2000\c2000ware_2_00_00_02\libraries\dsp\vcu\c28\lib\c28x_vcu0_library_fpu32.lib(crc_16_alt.obj) in archive is not an object collect2.exe: error: ld returned 1 exit status

Someone can help me please?

Thanks,

Jeremie

Answer 1

[Venkatesh Chilapur]

Hi,

Attached is one approach using MATLAB function block to invoke the FFT routine as shipped from TI from within the MATLAB/Simulink.

We define FFT structure containing pointers (as needed by TI API's) and pass the same after populating the pointers with appropriate references.

We implement a wrapper function which will do this assignment to pointers.

Please refer the attached files for the same.

Note: Update the MATLAB function code for header and source file path as appropriate.

HTH,

Venkatesh C

[Jerem_F]

Hi,

I m working with 2018b, could you please send me a new attachement that works with Simulink 2018b.

many thanks

Jeremie

Answer 2

[Venkatesh Chilapur]

Hi,

Please find the same.

Regards,

Venkatesh C

[Jerem_F]

Dear Venkatesh Chilapur,

Finally the FFT will be done in C code without Simulink.

So now you can close the this threads.

Many Thanks for your support.

Kind regards

Jérémie