TMS320F28388D: C2000 Simulink using TI DCL library functions

Hi Maximilian,

You can use the DCL Simulink model available in the {C2000ware Directory}\libraries\control\DCL\c28\models\DCL.slx library file for simulation and code generation using Simulink. These are 1-to-1 model of the algorithm used in DCL in Simulink.

Han

Hello Han,
thank you very much for your answer. In the DCL User Guide it is written in chapter 4.7.1 that the Simulink blocks are not suitable for code generation. I would like to find a way to insert the optimized assembler function of the DCL library into the code generation with Simulink. I would like to add the Refgen and Dlog functions and others.

Motor_control.zip

Hi Han,

thank you very much for your help. This information has already brought me a little further. I tried to integrate the Refgen function with the C Function Block. During the compilation the following error message occurs now.

In line c:\ti\c2000\c2000ware_4_00_00\libraries\control\dcl\c28\include\DCL_refgen.h:477:error: 223, function "__fsat" declared implicitly
| p->ya = __fsat(p->ampl * p->ya + p->yr, p->umax, p->umin);

I have no idea in which library the ___fsat function can be found.
I have put the Simulink model in the attachment.

Maybe you have some more good advice.

Hi Maximilian,

The __fsat is a C intrinsic function for C28x FPU. This function will be translated to MAXF32 and MINF32 instructions during compilation. The intrinsic function is something built into the compiler, hence there is not a header file that declares these functions. You can add your declaration of the function in the C function you create in MATLAB like below. For more details, you can refer to section 7.6.2 of the user's guide for C2000 compiler at https://www.ti.com/lit/spru514 .

float __fsat(float val , float max , float min );

Han

Hello Han,

thank you very much for your quick reply. I have added the intrinsic __fsat function to the C function block, but the error still persists.

Hi Maximilian,

Can you please share a simplified version of your Simulink file with the C block. I will need to do some further testing on your particular case to provide more detailed support. Thanks.

Han