• Cortex M33 non secure wifi
    Hello, I am using an NXP LPC55S69 with a Cortex M33 and Arm trustzone. The application I try to develop does some calculations in secure world and then pass the result to non-secure world where the...
  • How to change CM33 State from secure to non-secure
    Dear All, Please help me to change the cpu state from secure to non-secure hust after starting in reset handler itself. Is there any way to change its state to the non-secure region.
  • Cortex-M33 - SVC call from non-secure code does not trigger non-secure SVC exception
    Hello, I am trying to do a proof-of-concept running the Apache NuttX RTOS on STMicroelectronic's ST32L562E-DK board as the non-secure application with TrustedFirmware-M (ST's port of TF-M provided with...
  • How to write values ​​from secure code to non-secure memory.
    For example, Save the value x held by the secure code in the non-secure memory. next, Access the non-secure memory where the value x will be stored from the non-secure code. I want to do...
  • Calling non-secure Reset Handler from Secure main
    Hi, I am trying to run the example for ARMCM33_DSP_FP_TZ code provided in Keil MDK on a new Cortex-M33 MCU by our company. I have made necessary edits to the linker script to assign the correct values...