CCS/TMS320VC5510A: How to configure the stack mode for C55x with GEL?

Hi,

I do not believe it is possible to call ".ivec _c_int00,USE_RETA" from the GEL file. Also I could not find any register that controls stack mode. You can change IVPH and IVPL to point to a different interrupt vector table...

I see that the CSL examples include their own vector table, and link to it from the .CMD file. CSL here: http://www.ti.com/tool/sprc133

See C55xxCSL\examples\evm5510\csl\mcbsp\mcbsp1\vectors_mcbsp1.s55 and C55xxCSL\examples\evm5510\csl\mcbsp\mcbsp1\mcbsp1.cmd

Are you able to change .ivec _c_int00,c54x_stk to .ivec _c_int00,USE_RETA in the CSL build and have it take effect when the program is loaded?

Or does it only the stack mode only take effect the first time that the reset vector is entered? Are you using the bootloader (What is MPNMC)? The bootloader requires a vector table and will choose a stack mode there.

I will ask for additional help from software experts.

Regards,
Mark

The only way to change the stack mode is to create a vector table with the desired stack mode, install it in IVPH/IVPL, and execute a soft reset. You'll need a GEL method to execute a soft reset; I don't know what it would be called.