topic Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x in LPC Microcontrollers

Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

jimmyli — Thu, 10 Aug 2023 08:28:12 GMT

Hi,

Below is a question that hope you can check and help to fix.

Thanks very much.

MCU: LPC550x

Question: The CAN FD interface of LPC550x is in normal running mode, then we take a hot plug continuously for CAN FD, and LPC550x will trasmitting large data that causes the CAN PHY is hot.

Does it has some ways to fix it ?

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

Alice_Yang — Mon, 14 Aug 2023 02:22:59 GMT

Hello @jimmyli

Which CAN PHY do you used?

How about use a simple SDK demo to test?

Alice

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

Johnson_Ho — Mon, 21 Aug 2023 02:54:01 GMT

The CAN PHY is SIT1050，Its data sheet states that it is compatible with TJA1050 chips. The CAN driver is ported from SDK V2.

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

jimmyli — Wed, 23 Aug 2023 05:54:48 GMT

Hi Alice,
As Johnson said, the sdk example is <...\driver_examples\mcan\interrupt_transfer>, CAN is configured as mcanConfig.enableCanfdSwitch = true;
Hope you can check and give some tips to us.
Thanks very much.

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

Alice_Yang — Wed, 23 Aug 2023 08:34:14 GMT

Hello @jimmyli

Do you have LPCxpresso55s06-evk board? Does this issue can reproduce on this board?

Alice

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

jimmyli — Wed, 30 Aug 2023 13:43:25 GMT

Hi Alice,

Sorry that I have not an evk in hand to reappear, the question is raised by wu who gave a feedback before.

Thanks.

Re: Trasmitting large data when hot plug continuously for CANFD interface on LPC550x

Alice_Yang — Tue, 05 Sep 2023 02:40:32 GMT

Hello @Johnson_Ho

Recommend you check what the data signal is. and because the CAN PHY is hot, so how about check SIT1050.

Alice