TMS320F280039: support need to add the codes to clear RAM after the reset

Aki Li

Part Number: TMS320F280039
Other Parts Discussed in Thread: C2000WARE

Customer would like to clear all the RAM contents every time after POR or watchdog reset, for example, to add the related codes in the code start branch.asm, before LB _c_int00. Could you please help create the assembling codes for them? Thank you.

over 2 years ago

0 Swathy Lal over 2 years ago

TI__Prodigy 160 points

Hi,

Responses will be delayed as 4th September was US holiday

0 Vivek Singh over 2 years ago

TI__Guru** 113715 points

All the RAMs get cleared at POR inside bootrom. You can refer the RAMINIT code in cpubrom_Init_Boot.asm file inside C2000Ware (libraries\boot_rom\f28003x\rev0\rom_sources\F28003x_ROM\bootROM\source).

Regards,

Vivek Singh

0 Aki Li over 2 years ago in reply to Vivek Singh

TI__Genius 9365 points

Hi Vivek,

Thank you. What about the watchdog reset?

0 Vivek Singh over 2 years ago in reply to Aki Li

TI__Guru** 113715 points

RAMs are not cleared on watchdog reset. User need to have the RAM INIT code in their application to do that. I referred the BOOT CODE for that. Do we know why customer wants to initialize the RAM on watchdog reset. Is it to initialize the variables ? If yes then in ELF format, it is done as part of the cinit code.

Regards,

Vivek Singh

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280039: support need to add the codes to clear RAM after the reset