F32K144

[ScottXing]

Hi Guys，I got a F32K144UTA0VLLT，and I found that When confogure its CAN0  to  CANFD mode .

 FDEN can not be set to 1 when CAN0 is Freeze Mode( HALT =1,FRZ=1).

My question is: Does F32K144UTA0VLLT do not support CANFD? (my friend told me that，but I haven't find any proof from  offical document)

[Julián_AragónM]

Hi @ScottXing,

S32K144 does support CANFD:

Julin_AragnM_1-1709762879773.png

do you have FRZACK set as well to indicate module is truly in Freeze mode? Even if both FRZACK and FRZ are set 1, but FDEN still cannot be set to 1, you can try to change FDEN within debugger directly, while in Freeze mode.

Best regards,
Julián

[ScottXing]

Thank you Julián，I try to debug again with MDK :

I found that when FRZACK==1，FDEN can not be changed to 1  within debuger directly.

It still bothers me.

[Julián_AragónM]

Hi @ScottXing,

Please try the CAN FD example from the AN5413: S32K1xx Series Cookbook – Application Note.

Chapter 2.10.3.2 includes an example on CAN FD initialization.

Best regards,
Julián