AnsweredAssumed Answered

How correct use of Backdoor Key in FRDM-KL82Z board

Question asked by Rysard Suboc on Jan 19, 2017
Latest reply on Jan 22, 2017 by Robin_Shen

I use official board and SDK libraries. I write my project in MDK.

I set the MCU in secure status and enabled backdoor key access.

 

When I use FLASH_SecurityBypass() function from library, function returned me FLASH Access Error status.

I entered the same backdoor key which is in FCCOB registers. For key entering I use terminal window.

 

The problem comes from FLASH_SecurityBypass() function where call flash_command_sequence() function. 

flash_command_sequence() function returned FLASH Access Error status.

Outcomes