topic Re: flex CAN pins configuration in S32K

flex CAN pins configuration

chris_010 — Tue, 18 Nov 2025 07:59:16 GMT

env: S32DS3.5 + RTD4.0

I open Built-in examples--“FlexCAN_Ip_Example_S32K344”，I find there is no configuration regarding the pins.Is it right?Does it uses any default configuration?How can I find them.

Re: flex CAN pins configuration

Julián_AragónM — Tue, 18 Nov 2025 15:48:56 GMT

Hi @chris_010,

The FlexCAN_Ip_Example configures the FlexCAN instance as loopback, send frames through ISR and receive as polling, as explained in the description.txt file:

Meaning no pins are configured for it. You can change FlexCAN to "Normal/user mode" and configure PTA6/7 for CAN_RX/TX. You can refer to community examples:

Example S32K344 FlexCAN_Ip TX/RX/EnhanceRXFIFO DMA test S32DS3.5 RTD400 - NXP Community
[RTD600 MCAL & IP] S32K3X4EVB-T172 FlexCAN Example Interrupt/Polling - NXP Community
Example S32K312 CAN Transmit & Receive Using MB Interrupt DS3.5 RTD300 - NXP Community

Best regards,
Julián

Re: flex CAN pins configuration

chris_010 — Sun, 28 Dec 2025 09:19:20 GMT

oh, thanks a lot. I get it.