S32K142 FLEXCAN low power modes

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S32K142 FLEXCAN low power modes

Contributor I

Using S32K142 with S32 SDK

1) Using the CAN PAL component from Processor Expert, are there any APIs that allow us to put the FlexCAN hardware into a low power mode?

2) If I am using the FLEXCAN driver component from Processor Expert instead, there is an API called FLEXCAN_DRV_ConfigPN() that lets me put the hardware into Pretended Mode which is a low power mode. But if I would like to use an even lower power mode (similar to the Sleep mode of the MSCAN of the S9KEA), is this possible? Can I make the CAN hardware to go to sleep (not trying to match CAN IDs) and then generate an interrupt that wakes the CPU from Stop mode when there is a change at the RX pin.

Sorry if I missed this information from the documentation.

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NXP TechSupport
NXP TechSupport

Hello Julian,

1.- Some APIs that help you to enter a low power mode for the module FLEXCAN_DRV_ConfigPN and the FLEXCAN_EnterFreezeMode but if you want to put the MCU in a low power mode you will need a power manager component.

2.- As it mentions in the section Pretended Networking mode, you can put the MCU in stop mode and wake up using the Flexcan interrupt.

Best Regards,

Alexis Andalon

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