topic Re: S32K3 RTD7.0.0 SWT in S32K

S32K3 RTD7.0.0 SWT

Jason22 — Mon, 30 Mar 2026 06:18:22 GMT

S32K314 RTD7.0.0 IP层

一个RTD5.0.0的SWT例程，运行没问题，将该例程提升至RTD7.0.0后，重新生成了配置代码和驱动代码，发现SWT异常，超时了也不会复位，即使不喂狗也不会复位，SWT配置和RTD7.0.0工程看门狗超时后的寄存器图片如下图所示。

SWT的寄存器中除了RRR，其他的都和RTD5.0.0的一致。但RTD5.0.0的例程中，MC_RGM的FERD全为0，但RTD7.0.0中全为1，POWER模块中这几项的配置是一样的，查看生成的配置文件也都是0，通过单步调试，发现在时钟初始化中的下图处，会将FERD寄存器都置为1（RTD5.0.0没有出现这样的情况），尝试手动清零没成功，优化等级均为O0，Power_Ip_Inity也没有按照配置文件设置FERD为0，这个寄存器会导致看门狗不进行复位嘛？是否还有其他可能的原因。

Re: S32K3 RTD7.0.0 SWT

danielmartynek — Tue, 31 Mar 2026 06:13:55 GMT

Hello @Jason22,

Thank you for pointing this out.

It looks like there is a bug in the RTD Clock driver.

I will update the thread as soon as possible.

BR, Daniel

Re: S32K3 RTD7.0.0 SWT

Jason22 — Fri, 10 Apr 2026 02:25:31 GMT

Hello, @danielmartynek
Thank you for your support. I want to ask if there's any update on this issue.
BR, Jason

Re: S32K3 RTD7.0.0 SWT

danielmartynek — Fri, 10 Apr 2026 07:14:10 GMT

Hello @Jason22,

This issue is caused by a bug in the RTD.
A ticket has already been created to address it; however, the ticket is still unresolved, and the target RTD fix version has not yet been determined.
As a workaround, you can call Power_Ip_Init before Clock_Ip_Init.

Regards,

Daniel

Re: S32K3 RTD7.0.0 SWT

Jason22 — Fri, 10 Apr 2026 09:24:48 GMT

Hello @danielmartynek
Thank you for your reply.This issue does not seem to arise in the S32K312.
If this issue is solved in the future, where can I see the solution or explanation of this issue? In a file like SW32K3_S32M27x_RTD_R23-11_7.0.0_D2511_ReleaseNotes?

BR,
Jason

Re: S32K3 RTD7.0.0 SWT

danielmartynek — Fri, 10 Apr 2026 10:15:41 GMT

The issue appears to be related to the following erratum:
Mask Set Errata for Mask 0P55A / 1P55A – Errata [S32K3X4‑0P55A‑1P55A‑ERRATA]
ERR050583: MC_CGM: A functional reset occurring during a clock divider update may trigger a Power‑on Reset sequence.

This erratum is not present in:
Mask Set Errata for Mask 0P09C – Errata [S32K312‑0P09C‑ERRATA]

Yes, the information will be included in the release notes under: ARTDCMCU‑1650.

Regards,

Daniel