topic Re: Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool in MCX Microcontrollers

Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool

zorrotz — Wed, 17 Dec 2025 09:49:01 GMT

I have used peripherals config tool to configure the Systick to work with cpu_clk divided by 4.

After building the project there are 2 compilation errors, due to the lack of kCPU_CLK_to_SYSTICK and kCLOCK_DivSYSTICK definitions.

I have checked that these definitions are not included in fsl_clock.h file.

Note that I use MCUxpresso IDE 25.6 and SDK 25.09.

The fsl_clock.h file of the mcux-sdk 2.16 available in github includes these definitions, but i not confident in this file because i have found some bugs, for example:

- the are some comments that are incorrect

- CLOCK_FRO12MTrimConfig() function of fsl_clock.c file has this code:

SCG0->SIRCSTAT = SCG_SIRCSTAT_CCOTRIM(config.cltrim);
SCG0->SIRCSTAT = SCG_SIRCSTAT_CCOTRIM(config.ccotrim);

and i think that it should be:

SCG0->SIRCSTAT = SCG_SIRCSTAT_CLTRIM(config.cltrim);
SCG0->SIRCSTAT = SCG_SIRCSTAT_CCOTRIM(config.ccotrim);

I have also search the documentation for SDK 25.12, but these definitions are not included.

I can manually modify fsl_clock.h file, but I prefer to have a correct SDK.

Is there a SDK version for FRDM-MCXA153 which includes these definitions?

Re: Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool

Harry_Zhang — Wed, 17 Dec 2025 10:45:31 GMT

Hi @zorrotz

I have checked the frdm_mcxa153 v25.09 SDK.

In fsl_clock.c

status_t CLOCK_FRO12MTrimConfig(sirc_trim_config_t config) { SCG0->SIRCTCFG = SCG_SIRCTCFG_TRIMDIV(config.trimDiv) | SCG_SIRCTCFG_TRIMSRC(config.trimSrc); if (kSCG_SircTrimNonUpdate == config.trimMode) { SCG0->SIRCSTAT = (SCG0->SIRCSTAT & ~SCG_SIRCSTAT_CLTRIM_MASK) | SCG_SIRCSTAT_CLTRIM(config.cltrim); SCG0->SIRCSTAT = (SCG0->SIRCSTAT & ~SCG_SIRCSTAT_CCOTRIM_MASK) | SCG_SIRCSTAT_CCOTRIM(config.ccotrim); } /* Set trim mode. */ SCG0->SIRCCSR = (SCG0->SIRCCSR & ~(SCG_SIRCCSR_SIRCTREN_MASK | SCG_SIRCCSR_SIRCTRUP_MASK)) | (uint32_t)config.trimMode; if ((SCG0->SIRCCSR & SCG_SIRCCSR_SIRCVLD_MASK) == 0U) { return (status_t)kStatus_Fail; } if ((SCG0->SIRCCSR & SCG_SIRCCSR_SIRCERR_MASK) == SCG_SIRCCSR_SIRCERR_MASK) { return (status_t)kStatus_Fail; } if ((SCG0->SIRCCSR & SCG_SIRCCSR_TRIM_LOCK_MASK) == 0U) { return (status_t)kStatus_Fail; } return (status_t)kStatus_Success; }

You can refer to it.

Harry

Re: Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool

zorrotz — Wed, 17 Dec 2025 11:49:21 GMT

Hi Harry

Yes, CLOCK_FRO12MTrimConfig() function in SDK v25.09 is OK, but the problem is that this SDK version doesn't have kCPU_CLK_to_SYSTICK and kCLOCK_DivSYSTICK definitions.

Re: Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool

Harry_Zhang — Thu, 18 Dec 2025 07:26:07 GMT

Hi @zorrotz

Yes, i have checked the code.

It is a bug.

I will report it to our SDK team.

If you want to use kCPU_CLK_to_SYSTICK and kCLOCK_DivSYSTICK.

You need to add some code in fsl_clock.h

Hope this will help you.

Harry

Re: Problem to initialize Systick in FRDM-MCXA153 using peripherals config tool

zorrotz — Thu, 18 Dec 2025 12:00:44 GMT

Thank you Harry!

I will modify fsl_clock.h file.