topic Re: S32K344 MCAL config error：Enhanced RX FIFO in S32K

S32K344 MCAL config error：Enhanced RX FIFO

liyongfeng — Tue, 27 Jan 2026 12:04:09 GMT

I want to enable the Enhanced RX FIFO function, but an error is reported. How can I resolve this?

description: Invalid value for node "/Can/Can/CanConfigSet/CanController_1/CanRxFiFo": Controller physical does not support Enhance FIFO

Re: S32K344 MCAL config error：Enhanced RX FIFO

Julián_AragónM — Tue, 27 Jan 2026 17:21:30 GMT

Hi @liyongfeng,

If you are using S32K344 (or similar derivatives), only FlexCAN_0 supports Enhanced RX FIFO:

Best regards,
Julián

Re: S32K344 MCAL config error：Enhanced RX FIFO

liyongfeng — Wed, 28 Jan 2026 01:21:05 GMT

Thank you for your reply.

In the current application，FlexCAN_1 is used for the CAN FD message format. I want to filter the received CAN IDs one by one (since the global mask can only be 7FF). What method should I adopt?

Re: S32K344 MCAL config error：Enhanced RX FIFO

Julián_AragónM — Wed, 28 Jan 2026 20:41:02 GMT

Hi @liyongfeng,

Instead of using enhanced RX FIFO, you can use individual mailboxes and set an ID for each one. FlexCAN supports individual masking per-MB (IRMQ bit set) or global masking scheme (IRMQ cleared). For example:

Mailbox	ID	Mask
MB4	0x100	0x7FF
MB5	0x101	0x7FF
MB6	0x102	0x7FF

Best regards,
Julián