Can Bus-Off problem

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Can Bus-Off problem

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Contributor II

Hi , I have a problem when use can bus of Lpc1768. When the can bus run into Bus-Off state,I try to restart it. According to the LPC17xx User Manual, Below is my restart code:

  LPC_CAN1->MOD = 1; // Enter Reset Mode

  LPC_CAN1->GSR = 0; // Clear the Tx error counter

  LPC_CAN1->CMR = (1<<1)|(1<<2)|(1<<3);// reset cmr

  LPC_CAN1->MOD = 0;// Return Normal operating

But ,after 128 Bus Free condition (11 consecutive recessive bits),the bus still off.

How could  I  handled the Bus-Off error?

Thanks a lot.

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NXP TechSupport
NXP TechSupport

Hi Customer,

    I found you already create 2 posts which have the same question with this post, I already answer you in your another post:

lpc1768 can 总线 bus_off 如何恢复

  Please refer to that answer, and try again.

  If you still have question after testing, please reply me in your above link, I will provide service in that post.

Wish it helps you!


Have a great day,
Jingjing

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