S32KのトピックRe: S32K322 Debug LVD HVD and error notification

S32K322 Debug LVD HVD and error notification

AbdNxp — Fri, 11 Jul 2025 10:11:00 GMT

Hello Teach Supports,

I am working on NXP S32K322.

I want to use LVD and HVD and power related callback.

I have enabled the above configuration from POWER configuration also added notification and error callbacks.

Now, when I reduce the power to 2.9V debugger notifying target power lost.

My simple question is how I can test that on low/high voltage detection the control jumps to respective interrupt/callback.

Thanks & Regards

Re: S32K322 Debug LVD HVD and error notification

Senlent — Mon, 14 Jul 2025 09:31:14 GMT

Hi@AbdNxp

The HVD and LVD interrupt events have the same interrupt function, so they will only enter the same interrupt function，that it "McuErrorIsrNotification()" .

You need to determine whether the LVD or HVD event occurs based on the value of LVSC.

For example:

void McuErrorIsrNotification(uint8 u8ErrorCode)//McuErrorIsrNotification { uint32_t PMC_Status = 0; PMC_Status = IP_PMC->LVSC;//get LVSC register vaule if((PMC_Status>>4) & 0x01)//LVDA5F = 1 { ;//LVD event happend } if((PMC_Status>>0) & 0x01)//HVDAF= 1 { ;//HVD event happend } }

Re: S32K322 Debug LVD HVD and error notification

AbdNxp — Mon, 14 Jul 2025 11:22:03 GMT

Hello Senlent,

Thanks for the clarification.

How I can debug it ? I want to see if the control jumps to the notification callback. mainly for Low Voltage detect.

What configuration I need to do to achieve this ?

Thanks.

Re: S32K322 Debug LVD HVD and error notification

Senlent — Tue, 15 Jul 2025 05:35:29 GMT

Hi@AbdNxp

"Now, when I reduce the power to 2.9V debugger notifying target power lost."

I think you have some misunderstandings here. If it is lower than 2.9V, it should be an LVR event rather than an LVD event. By default, an LVR event will cause a POR instead of an interrupt.

For LVD: