TMS320F280049: Interrupt_illegalOperationHandler(void) after changing from RAMGS to RAMLS for .TI.ramfunc

Quentin Fu

Part Number: TMS320F280049
Other Parts Discussed in Thread: C2000WARE

I have a design running well on 280049c. After updating 28004x_cla_flash_lnk.cmd by changing from RAMGS2 to RAMLS0LS1LS2LS3LS4 for ".TI.ramfunc" which contains ISR code, like below:

changed from:

.TI.ramfunc : LOAD = FLASH_BANK0_SEC1_2_3_4_5_6,
RUN = RAMGS2

to:

.TI.ramfunc : LOAD = FLASH_BANK0_SEC1_2_3_4_5_6,
RUN = RAMLS0LS1LS2LS3LS4

it still compiles fine and .out is generated. But after configuring .out to 280049 (TI ControlCard) and run, it triggered "Interrupt_illegalOperationHandler(void)" -- seems ISR execution is trapped.

Any idea what might be wrong? How do I diagnose this?

over 5 years ago

0 Veena Kamath over 5 years ago

TI__Mastermind 32695 points

Hi,

Did you by any chance configure these LSRAMs as CLA memory?

Can you check if the contents in this section is being copied to the LSRAM correctly? In C2000ware driverlib examples, this is done using memcpy function inside Device_init function.

Regards,

Veena

0 Quentin Fu over 5 years ago

Intellectual 800 points

Hi Veena,

Yes, these LSRAMs are configured as CLA memory as well as shown below:

.const_cla : LOAD = FLASH_BANK0_SEC1_2_3_4_5_6,
RUN = RAMLS0LS1LS2LS3LS4,

so CLA memory and .TI.ramfunc can not use the same LSRAM? Is this mentioned in any TI DOC?

Thanks,

Quentin

0 Veena Kamath over 5 years ago in reply to Quentin Fu

TI__Mastermind 32695 points

The LSRAM can either be owned by CLA or C28x. This is configured using the LSXMSEL. Please try using different LSRAMs for CLA and C28x code and set the LSXMSEL register accordingly.

Regards,

Veena

0 Quentin Fu over 5 years ago in reply to Veena Kamath

Intellectual 800 points

Thanks, Veena. Please close this case.

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280049: Interrupt_illegalOperationHandler(void) after changing from RAMGS to RAMLS for .TI.ramfunc