CCS/TMS320F28388D: CPU2 BOOT from FLASH

NAGESH RK

Part Number: TMS320F28388D

Tool/software: Code Composer Studio

hello

I am using F28388D controller.

I have written a boot loader to jump to sector 4 where the application resides , i am observing my jump to application software in CPU1 is successful , but the jump to application software in CPU2 is not successful i am using the same files to boot from FLASH sector 0.

I have even used the boot function in CPU1 to enable CPU2 to boot from Sector 0 where my boot loader resides.

When ever CPU2 jumps to Sector 4 with my instruction " asm(" LB 0x088000 "); it enter the code start branch and then to boot28.asm file where it gets stuck with below error

"C28xx_CPU2: Trouble Reading Register PC: (Error -1142 @ 0x0) Device blocked debug access because it is currently executing non-debuggable code. Choose 'Rude Retry' to disable polite mode and force the operation. (Emulation package 9.2.0.00002) "

Can you please tell me what is this error so that i can help me debug further.

over 5 years ago

0 NAGESH RK over 5 years ago

Expert 2260 points

Hi ,

To add to above clarification i am attaching the image from my debugging.

The highlighted block in Red is where i get the probome in boot28.sm file.

0 Christopher Chiarella over 5 years ago in reply to NAGESH RK

TI__Mastermind 30255 points

Hello

One of the more common reasons for this error is that the CPU is going into the weeds.

For debugging, if it isn't already, disable the watchdog in the code_start before it branches into c_init.

Check your memory allocation for stack, heap, etc. What memory is stack allocated to?

Is seen when loading the CPU2 app via bootloader or via CCS or both?

Best regards

Chris

0 NAGESH RK over 5 years ago in reply to Christopher Chiarella

Expert 2260 points

Hi Chris,

I have disabled the watchdog code_start.

Is seen when loading the CPU2 app via bootloader or via CCS or both?

This is observed in both situations CCS and bootloader.

thanks

Nagesh

0 NAGESH RK over 5 years ago in reply to NAGESH RK

Expert 2260 points

Hi Chris,

From the above issue, I did debug further and understood if I jump the CPU2 to the application first and then CPU1 to the application it works fine.

I am not understanding this behavior my expectation was to do vice versa.

Can you let me know what could have been going on if possible.

thanks.

Nagesh

0 Christopher Chiarella over 5 years ago in reply to NAGESH RK

TI__Mastermind 30255 points

Nagesh

Could you describe the flow of loading the applications (ex: program CPU1, then CPU2, run CPU2, run CPU1, etc) and then additionally clarify more regarding "jump the CPU2 to the application first?

Thanks!

Chris

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CCS/TMS320F28388D: CPU2 BOOT from FLASH