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

[javher4127]

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.

[Julián_AragónM · Accepted solution]

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

[javher4127]

PNET feature is CAN FD compatible?

Thanks.

[Julián_AragónM]

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.