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Programming FSEC field using Flash Driver

Question asked by Saurabh Saxena on Sep 25, 2018
Latest reply on Oct 15, 2018 by Saurabh Saxena

Hi,

 

I have Kinetis K82 board, I am trying to change the FCA my  fields within application.

 

As far as I know once  these Fields are updated from application by the Bootloader, hence once I am in the application changing these fields will have no impact, but in my application when I try to program this section using the flash drivers, I cannot program this fields.

 

According to AN4507, As it is compulsory to erase the flash sector before programming it again, When I try erase the FCA region suddenly the Security is enabled, which according to me should take effect from the next reset.

 

Why is this happening.?

 

I mean I must be able to change this fields till the next reset, hence able to disable and enable security?.

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