英伟达团队您好，请教关于can的问题：目前can0和can1接入can盒能够正常收发（不接入设备，使用cansend发送也正常）；can2和can3发送数据会进入bus off

[1516775545]

验证步骤：

1. can0不接入任何设备，使用cansend发送正常（接入can盒正常收发）；can1也正常

2. can3同样不接入任何设备，使用cansend发送数据，会出现bus off（接入can盒无法正常收发，也会出现bus off）；can2也同样的情况

3. can3的loopback模式正常，can2也同样如此

[KevinFFF]

Hi 1516775545,

Are you using the devkit or custom board for Thor?

My understanding is that CAN0/CAN1 are configured for CAN by default, but CAN2/CAN3 are not.
Has the pinmux been configured for CAN2 and CAN3?

[1516775545]

custom board for Thor! CAN2 and CAN3 have been configured. The pinmux is as follows:

Thor-dvt-pinmux.zip (5.5 KB)

[1516775545]

If it is not configured, the loopback mode cannot be used either, right?

[KevinFFF]

Could you use 2 CAN transceivers for CAN2 and CAN3 respectively and connect CAN-H/CAN-H and CAN-L/CAN-L to verify?

[1516775545]

CAN2 and CAN3 tests passed; issue with pinmux configuration.