TMS320F28069: IQdiv always gives the same result

Susan,

You can expect a response to this by the SME by tomorrow. Tuesday was a TII holiday.

Have you checked whether the IQMathTables in ROM are correctly included by the project?

Thanks,

Sira

Sira Rao80 said:

Have you checked whether the IQMathTables in ROM are correctly included by the project?

Yes. I used  28069_IQmath_lnk.

Hi,

I was unable to replicate your issue: 

Can you make sure you've included the library correctly? Is there a mismatch in the Q value? 

Can you make my disassembly looks similar to yours? Can you send a screenshot of yours?

-Shantanu

Dear Shantanu,

could you send me the zip project?

HI Susan,

Please find the project attachedE2E_TEST.zip

-Shantanu

I tested your project and the result was as below. (i use LAUNCHXL_F28069M). Please help to check it.

Hi,

I think i found the issue. In the zip file attached, I had forgotten to change the IQ version to 28 in IQmathLib.h. The GLOBAL_IQ macro value has to be consistent. Can you check if this is the issue?

-Shantanu

#ifndef GLOBAL_Q
#define GLOBAL_Q 28
#endif

But the result is the same.

I got the correct result when i used 28379d.

That's interesting. Are all the project settings/libraries/object file format used identical?

They all come from C2000ware.

C:\ti\c2000\C2000Ware_3_03_00_00\libraries\math\IQmath\c28\examples\C

2837xd_IQsampleC and 2806x_IQsampleC

Okay this may require further debug. Can we discuss this offline?