topic S32K116 VLPS mode wake-up on arrival of a CAN message in S32K

S32K116 VLPS mode wake-up on arrival of a CAN message

javher4127 — Fri, 16 May 2025 10:02:13 GMT

Hello.

I would like to know if it is possible with the S32K116 microcontroller to wake up from VLPS power mode with the arrival of CAN messages.

Thanks.

Re: S32K116 VLPS mode wake-up on arrival of a CAN message

Julián_AragónM — Fri, 16 May 2025 16:31:30 GMT

Hi @javher4127,

For S32K1 devices, self-wakeup from CAN module is not supported in VLPS mode. You can see that CAN module is OFF in Table 39-4. (Module operation in available power modes) from S32K-RM.

PNET features is used to wake up from STOP1/STOP2 modes in those instances where PNET is included, but this does not apply for VLPS mode. As a workaround, you can use any other pin (or even the same CAN_RX pin changing PORT configuration) to generate an interrupt when MCU is on VLPS mode. This can wake the CPU and then restore activity on CAN module.

Best regards,
Julián

Re: S32K116 VLPS mode wake-up on arrival of a CAN message

javher4127 — Thu, 29 May 2025 15:28:27 GMT

PNET feature is CAN FD compatible?

Thanks.

Re: S32K116 VLPS mode wake-up on arrival of a CAN message

Julián_AragónM — Thu, 29 May 2025 15:46:39 GMT

Hi @javher4127,

No, wakeup functionality is not available for messages in CAN FD format. When in Pretended Networking mode, CAN FD format messages are ignored.