CCS/TMS320F28069: CLA lib cannot work in ".hex" file but OK in ".out" file

Linda Zhang84708 said:

But after converting this ".out" file into ".hex" file in CCS and then downloading the ".hex" file into the same board, it cannot work.

Linda,

Please provide details on how the file was converted and how it was loaded.  Is this a flash project or a RAM project?  Was the flash programmer used?

Linda Zhang84708 said:

After checking the details they found out that in CLA calling libraries of SIN, COS cannot work as expected after downloading the ".hex" file.

Please provide more information on what was observed and what went wrong.  What happens when sin, cos are called? Screenshots of the disassembly may help debug the issue.

Lori 

Hello Lori,

Customer found that this issue is related with below configuration in CLA initialization codes:

------------------------------------------------------------------------------------------------------------------------------------------

//Copy over the CLA code(if running in standalone mode from FLASH)

memcopy(&Cla1funcsRunStart, &Cla1funcsLoadStart, (Uint32)&Cla1funcsLoadSize);

//Copy over the CLA math tables(if running in standalone mode from FLASH

//and using the CLAMath Library)

memcopy(&Cla1mathTablesRunStart, &Cla1mathTablesLoadStart, (Uint32)&Cla1mathTablesLoadSize);

------------------------------------------------------------------------------------------------------------------------------------------

If both "memcopy" codes are executed, the ".out" file can work all well; the "sin" function in CLA cannot work after downloading the converted ".hex" file.

But if only comment the second "memcopy" code, the "sin" function in CLA can work well after downloading the converted ".hex" file.

Would you please kindly help? Thanks!

Best Regards,

Linda

Linda Zhang84708 said:

If both "memcopy" codes are executed, the ".out" file can work all well; the "sin" function in CLA cannot work after downloading the converted ".hex" file.

But if only comment the second "memcopy" code, the "sin" function in CLA can work well after downloading the converted ".hex" file.

Linda,

I don't know why this is the case.  I would expect that both memcopy functions should be required.  The CLA math tables should be required in both the cases in order for the sin function to work properly.

How are they loading the hex file?  Is it through a boot loader and loaded to RAM?  

If they load the hex, then they can load only symbols from the .out file.  This will enable them to single step through the program after the hex is loaded.   This will help identify why the memcopy is causing a problem.     

Regards

Lori