Hard fault handler

[Istillaga]

Hello,

I am using the STM32U575ZIT6 microcontroller and enabling the TrustZone option. When executing projects, the HardFault handler triggers when switching to the non-secure zone, displaying the message "No source available for <signal handler called>() at 0xffffffa9". This also happens when running a blank project. Do you have any solutions?

[Istillaga · Accepted solution]

Hello,

I have managed to resolve the issue. The error was that the values of AttributeConfig.MPCBB_SecConfig_array when initializing GTZC were set to 0xFFFFFFFF when they should have been 0x00000000.