topic S32K144 Cortex-M4 Control register in S32K

S32K144 Cortex-M4 Control register

Loky — Fri, 22 Aug 2025 01:14:53 GMT

Control register bit0:nPRIV only define the Thread mode privilege level, in handler mode, software execution is always privileged. so when in handler mode, what register should be observed to determine if the current state must be in privileged mode?

Re: S32K144 Cortex-M4 Control register

petervlna — Fri, 22 Aug 2025 05:46:44 GMT

Hello,

In Handler mode, privilege is always enabled.

To detect Handler mode, check IPSR ≠ 0.

In Thread mode, check CONTROL.nPRIV to determine privilege.

Best regards,

Peter