CCS/TMS320F28379D: Problem with Unresolved Symbols

Sebastian Toro

Part Number: TMS320F28379D

Tool/software: Code Composer Studio

Hello everyone!

I'm working on a Control Project and i need to start using the CLA to calculate my PI values. I created a header file and i declared all the variables there. My problem is that i get an error for each of these declared variables like "unresolved symbol <variable>, first referenced in ./epwm_up_aq_cpu01.obj". I inserted all the erros down below

I tried looking for the linkers used on the CLA examples, but i still get the errors. What should i do?

over 4 years ago

0 Lori Heustess over 4 years ago

TI__Guru* 91940 points

Unresolved symbols means the linker cannot find the definition of the symbol (variable or function). A declaration in a header file is different than a definition (see this FAQ http://c-faq.com/decl/decldef.html). Either it can't find the source file because it isn't part of the project (library or source file), or a search path to a library is not correct.

If you are sharing the variables between the C28x and CLA, make sure to follow the guidelines here:

https://software-dl.ti.com/C2000/docs/cla_software_dev_guide/faq.html#how-is-data-shared-between-the-cla-and-c28x

Regards

Lori

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CCS/TMS320F28379D: Problem with Unresolved Symbols