CAN transceiver makes bus die when we force it sleep and wake up cyclically

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CAN transceiver makes bus die when we force it sleep and wake up cyclically

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lin_dao
Contributor I

Dear team,

I have an issue related to CAN transceiver in UJA1167.

When CAN bus go to sleep, I force our SBC Transceiver to CAN Offline Mode, when CAN wake up, I force it to CAN Active mode. It is working fine in normal case. But for the below case I face the error:

the cycle of our Network management is 5.75s,  when I wake CAN bus up, it will go to sleep after 5.75s if there is no activity on CAN, after sleep 1.3s, I wake it up again, cycle is ~7.1s. then I continuously wake up and let it sleep. after 255s or later, The SBC can not be wake up. CAN bus is died (BUS OFF happens). I do not know if there is any case to let SBC make the CAN bus die (CANH and CANL are shorted to LOW).

What I have to do in this case? it happens when I force SBC transceiver sleep and wake up when CAN bus sleep and wake up. 

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TomasVaverka
NXP TechSupport
NXP TechSupport

Dear Lin,

I have just talked to our local FAE, he is going to contact you directly to clarify all your questions ASAP. 

Best regards,

Tomas

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