TMS320F28032: Keep One Bit Variable After Watchdog Reset

Alper Soysal

Prodigy 30 points

Part Number: TMS320F28032

Tool/software:

Hi,

I am using TMS320F28032 in my application. I set the watchdog timer and made a reset succesfully.

I need to keep one bit variable permanently to check after any reset.

Is there any way to do it ?

In the forum, I saw that some in microcontroller series(F28379), Hibmode register can be used for this purpose but I didn't any register for F28032. Is there any similar register ?

Can I use the internal Flash Memory to keep the variables in my application code ?

Thanks,

over 1 year ago

0 Allison Nguyen over 1 year ago

TI__Mastermind 24800 points

Hi Alper,

Please allow for another day for me to look into this inquiry. Thanks for the patience.

Best Regards,

Allison

0 Allison Nguyen over 1 year ago

TI__Mastermind 24800 points

Hello,

Apologies for the delay. If data is not stored in Flash, it will not be saved. This is not a C2000 limitation, this is how RAM and all volatile memory operates. Alternatively, you could save data to an external memory.

Best Regards,

Allison

0 StephanS over 1 year ago in reply to Allison Nguyen

Genius 4087 points

This is true for a cold-start (power on reset), but not for a warm-start.

Many of the C2000 devices do not clear RAM on a reset by hardware. This is done by software (init of C environment) and you could preserve parts of RAM from being cleared f.e. in the asm startup routine.

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28032: Keep One Bit Variable After Watchdog Reset