Problem while using S32K344 CAN0 and CAN1 at same time to receive data in interrupt callback.

[jerryrig]

Hello,

I am trying to send 1 Message with 10mS period on CAN0 also i configured CAN0 Receive callback interrupt to receive one message through callback function. Also, at same time i configured CAN1 Receive callback interrupt to receive one message through callback function.

If i run two things separately it works properly when i try to use two CAN buses at same time it is giving some error frames on CAN1 where i am not transmitting anything on CAN1, I am transmitting messages on CAN0 only still i can see some garbage frames coming on CAN1.

I am using RTD3.0.0, Design studio 3.5, And flexCan module in driver layer, I am doing this activity on S32K344-T172 board.

If anyone is having such example code, please share.

Thanks

#s32k344 #CAN0 #CAN1 #FlexCAN

[PetrS]

HI,

what is your connection in fact? Do you use some external CAN transceiver for second CAN module? There is just single one on the EVB.

BR, Petr

[jerryrig]

@PetrS  Thanks for the reply,

Yes, I am using external transceivers on PTB1 and PTB0 for CAN0 and for CAN1 i am using one more transceiver on PTC8 and PTC9.

Thanks

[PetrS]

Hi,

can you share some log for CAN buses and register content to see error detected?
Or better simplified project showing an issue.

BR, Petr