TMS320F28027: How to take the values from the sinusoidal table?

Hi,

You can use the sin function from the FASTRTS library with the ROMTABLES configuration.

-Shantanu

Hi Shantanu,

Thanks for your help.

Could you help introduce more about FASTTS library? i.e. some examples on how to call the sine table of ROM.

Thanks and regards,

Cherry

Hi Shantanu,

Thanks again and could you help point to the link of the example? 

Thanks and regards,

Cherry

Please check the ROMTABLES build configuration of the sin32 example in the FASTRTS library.

Hi Shantanu,

C2000Ware is downloaded on customer side and they cannot find the example you mentioned( c2000ware/libraries/math/FastRTS--FastRTS). 

Thanks and regards,

Cherry

Hi,

Please find the example here. The sin32 example. Load into ccs and choose ROMTABLES configuration

-SHantanu

Hi SHantanu,

Thanks for your detailed guidance again but what you give is about floating point while the customer's chip is fixed point. Is that same? 

Thanks and regards,

Cherry

Cherry,

For fixed point, you will have to use the IQMath Sin() functions in ROM. Please refer to the IQMAth library.

-Shantanu

Hi Shantanu,

Thanks for your help again but now we are stuck here, since this IQ data issue is from the same customer and has not been resolved yet, could you help look into it and give some follow up so that we could help push these 2 cases?

Thanks and regards,

Cherry

Cherry,

Regarding the IQMath data issue, are you using the tables/library in ROM or loading it in RAM/FLASH? Please run the example in <c2000ware>\\libraries\math\IQmath\c28\examples\C\2802x. If the example passes, please replicate the project settings. If it is failing, we may need further debug. 

-Shantanu

Hi Shantanu,

How do the examples in c2000ware load into CCS to compile and run? 

Thanks and regards,

Cherry

Cherry,

I did not understand the question. Are you having trouble importing the project into CCS? What is the exact issue? 

-Shantanu

Hi Shantanu,

Shanty said:

Are you having trouble importing the project into CCS?

Yes, the customer is not able to import the project into CCS. 

Thanks and regards,

Cherry

Cherry,

The import method is the same for all projects/examples. I am able to import the project into ccs. It is possible that there may have been an issue with your installation. Can you try installing c2000ware in a fresh directory and then importing?

-Shantanu

Hi Shantanu,

Shanty said:

Can you try installing c2000ware in a fresh directory and then importing?

They've tried twice but all failed. The customer wants to try copying key files to other IQ projects that can be run to see if they have the same problem, could you help point to what files are critical?

Thanks and regards,

Cherry

Cherry,

That is quite strange as I just re installed and it is working fine. Which version of C2000ware are they using? 

To replciate the project, you will need the three files in the IQmath\c28\examples\C\source\ folder and the cmd file. You will also need to link the IQMath library while building.

-Shantanu

Hi Shantanu,

Shanty said:

Which version of C2000ware are they using? 

The latest version which is downloaded on ti.com.

Thanks and regards,

Cherry

Cherry,

This is strange as I just reproduced it one more time and I am able to import. Please try to replicate the project as i have said above.

-Shantanu