2023-12-14 07:04 AM
I am trying to disable TrustZone on my MCU - STM32U5 and i followed the steps as per the instructions given here :
https://community.st.com/t5/stm32-mcus/how-to-disable-trustzone-on-stm32u5-series/ta-p/49793
After I uncheck the TZEN option byte, I no longer can connect to the micro
I get the following error:-
Kindly help
2023-12-14 07:17 AM
Hello @GaneshS and welcome to the Community :)
Did you try with the latest version of CubeProgrammer?
I recommend you following the detailed steps mentioned in the "9 TrustZone deactivation" section of the AN5347 Arm TrustZone features for STM32L5 and STM32U5 Series application note.
Imen
2023-12-14 01:30 PM - edited 2023-12-14 01:36 PM
Hello I replicated the steps as given in the app note . I am using the latest version of the programmer ie . 2.15
Tried logging through the CLI
Does not let me read/write option bytes. What am i missing ?
2023-12-19 08:31 AM
Hello GaneshS ,
Thank you for contacting STMicroelectronics. Your inquiry is being escalated for specialized support.
Kind Regards,
Christian
ST Support