F2812 flash programing failed

Zhisheng Liu

Please help me!!

I see that question is raised by other people here before, but answer not good for me. My question: I have eZDSP board for f2812. I used for some time with no problem, but now cant program flash anymore. I receiving message "device locked" - but I did not lock it! Why is this hapening? How to solve?

Eng. Liu

over 15 years ago

0 ChrisClearman over 15 years ago

TI__Guru** 119600 points

most likely you either

1. programmed in a code security key

2. power was interrupted during a programming and the code security registers have unknown values

if you don't know, or can't guess, the password the device is likely permanently locked and would need to be replaced

0 Lori Heustess over 15 years ago in reply to ChrisClearman

TI__Guru* 92350 points

One thing to double check is the VDD3VFL supply line. If it is not healthy and not 3.3v the flash will not be powered and the CSM will seem to be locked.

CSM FAQ Wiki page: http://processors.wiki.ti.com/index.php/Code_Security_Module_FAQ_for_C2000

Cheers,

Lori

C2000™︎ microcontrollers

C2000 microcontrollers forum

F2812 flash programing failed