S32KのトピックRe: S32K144 Use MCAL PLL configuration

S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 02:56:31 GMT

When I was using MCAL to configure the MCU clock, calling the Mcu_GetPLlStatus () function did not return the PLL_LOCKED signal. I found that the register was not set correctly in this MCU_initClock() function, only PLLEN was set to 1, but PLLSEL and PLLVLD were not set, resulting in the inability to achieve PLL locking.

The MCAL version I am using is SW32K1_S32M24xRTD_R21-11_2.0.0uP04, EB version 29.0.0. I would like to know how to solve this problem, whether it is caused by my configuration or other issues?（At the same time, I would like to know the meaning of the P04 suffix in SW32K1_S32M24xRtD_R21-11_2.0.0uP04）.

Thanks for help！

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 04:38:19 GMT

Hi@Embedded_novice

The clock switching to PLL is not completed by "Mcu_InitClock".

Please try use the api "Mcu_DistributePllClock".

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 05:21:41 GMT

This is the order of my API calls，I cannot escape from the while loop because the PLL_LOCKED signal is not set.

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 05:31:57 GMT

Hi@Embedded_novice

I can't see any problem with this code. Make sure your current hardware has an external crystal clock.

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 05:36:58 GMT

The 8MHz clock of the external SOSC is normal.If there are any other suggestions that can be tried, please let me know. Thank you.

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 05:47:28 GMT

Hi@Embedded_novice

Could you provide me your project's elf file so I can help you test it.

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 05:51:56 GMT

Thanks for help!

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 07:22:28 GMT

Hi@Embedded_novice

Could you please check your McuSystemPll configuration, make sure System PLL is enabled.

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 08:05:04 GMT

Yes, that's how I did it.Can I send you the EB configuration project to check if there are any configuration errors.

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 08:09:53 GMT

Hi@Embedded_novice

You can refer to the routines we provide.

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 08:15:06 GMT

Okay, I will first go to the reference configuration items of the routine. Thank you for your help. Also, may I ask what the meaning of P04 after the MACL name is?

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 08:18:56 GMT

Hi@Embedded_novice

P->PACTH

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 09:08:37 GMT

I have found the reason. Thank you for your help

Re: S32K144 Use MCAL PLL configuration

Senlent — Wed, 12 Feb 2025 09:09:50 GMT

Hi@Embedded_novice

Could you please share the reason why?

Re: S32K144 Use MCAL PLL configuration

Embedded_novice — Wed, 12 Feb 2025 09:24:16 GMT

In MCU ->McuLockSettingConfig ->McuSOSCClockConfig, there is an option called "select external reference clock". When I uncheck this option, it will run normally. I personally understand whether this is related to the crystal oscillator I am using. Currently, I am using an external crystal oscillator, and the external clock source requires an internal OSC oscillator to drive my crystal oscillator to start oscillating. When I use an active crystal oscillator, it can start oscillating directly through external voltage without the need for an internal oscillator to provide a source.