Lock Fuses on imxrt1024 with JLink

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Lock Fuses on imxrt1024 with JLink

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BvLeeuwen
Contributor I

I am trying to use a JLink plus to write the fusemap of a imxrt1024 MCU. 
I have seen examples where this is done in software on the imxrt itself but we would like to use the JLink instead. 

For testing I wrote to GP2 by writing to address 0x401F4670.
I can read back the right values but when I do a reset the values are deleted. 
This happens since I did not lock the fuses. 

 

BvLeeuwen_1-1676129307183.png

 

BvLeeuwen_0-1676129198546.png

So next I tried to lock GP2 by setting bit 13 on address 0x401F4400 to 1.
However when I read 0x401F4400 again, nothing has changed.

BvLeeuwen_2-1676129507775.png

What am I missing?
Should I write the lock in another way? 
Is this at all possible through jlink?

See the python script attached to reproduce. 

BvLeeuwen_3-1676131407956.png

 

 

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diego_charles
NXP TechSupport
NXP TechSupport

Hi @BvLeeuwen 

I hope you are doing well!

Currently, I  am checking there is an enablement already for this or any limitation. As the oficial way to  do fuse programming is by using our MCUXpresso Security provisioning tool or the MCU boot Utility.

Our apologies for not reaching you out sooner.

Diego

 

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