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iMXRT1021 blowing efuse via executable code?

Question asked by Tony Thurgood on Jan 28, 2020
Latest reply on Jan 29, 2020 by Tony Thurgood


We are using the iMXRT1021 and need to blow efuses via executable code.

I have looked at IMXRT1020RM.pdf, but this describes efuse functionality, but not usability. At the moment we can blow efuses either using Blhost/flashloader or MCU Boot Utility/Flashloader.


Is there an application note explaining internal efuse programming?

Can anyone advise how to do this?


I have found a reference to EFUSE_PROG_SUPPLY_GATE which I assume needs to be set, then what?