I'm working with TrustZone code on LPC55S69 chip. In my application I read memory address that would trap into SecureFault which would be recovered using EXC_RETURN. After that my application reads another memory address, resulting in trapping again to SecureFault. I expect SAU->SFAR value changed to the second fault memory address; however when the fault happened, my IDE shows that the value remains in first fault memory address when this trapped SecureFault does not refer to.
I tried to change memory addresses to visit, it always shows that second SAU->SFAR remains in the first memory address, whichever addresses I chose to read to.
How to solve this problem? I'm using LPCXpresso55S69 board, code run on core 0 which has TrustZone technology, and MCUXpresso IDE v11.5.0 version.
Looking forward to replies. Thanks!