S32k312 Eval board - Get frequency API issue

Thalapushpam1 — Fri, 22 May 2026 12:24:14 GMT

Dear Sir/Madam,

Using S32k312 Mini Eval board for our application. SW32K3_S32M27x_RTD_R21-11_5.0.0 RTD version used.

Wnen get clock frequency called getting hard fault error,

Mcu_GetClockFrequency(SCS_CLK); - hard fault error

Mcu_GetClockFrequency(AIPS_PLAT_CLK); - hard fault error

Mcu_GetClockFrequency(CORE_CLK); - hard fault error

Mcu_GetClockFrequency(CLKOUT_RUN_CLK); - working fine

This is the sequence I used for clock init,

Added some delay after Mcu_SetMode(McuModeSettingConf_0); & tried still got the same issue. Is it PLL stabilization take time? if yes how long?

I want to set the systick based on the core clock frequency using

OsIf_Timer_System_Internal_Init() API. can you support.

Thanks.

Re: S32k312 Eval board - Get frequency API issue

VaneB — Tue, 26 May 2026 16:45:35 GMT

Hi @Thalapushpam1

Could you please compare your configuration with the attached .mex file? I have created a simple test on my side, calling Mcu_GetClockFrequency for some of the clocks you mentioned, and I did not encounter any issues. For your reference, I am also attaching my main file.

Regarding the OsIf TimerClockRef, I believe the following thread could be a helpful reference:

Delay function using OSIF

BR, VaneB

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S32k312 Eval board - Get frequency API issue

Re: S32k312 Eval board - Get frequency API issue