Question about "CAN send error: -7 - A write operation failed on the CAN interface"

astuff / kvaser_interface

A Kvaser CAN interface ROS abstraction layer.

MIT License

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Question about "CAN send error: -7 - A write operation failed on the CAN interface" #54

Closed TIANGANGLIN closed 3 years ago

TIANGANGLIN commented 4 years ago

Hello, I used the Kvaser Leaf Light v2 and a delphi_esr radar. When I use "roslaunch delphi_esr delphi_esr.launch" commend, it returns "Kvaser CAN Interface - CAN send error: -7 - A write operation failed on the CAN interface", and I receive nothing in rostopic echo /can_tx. I want to know if my implementation is correct or not. Can u send me a tutorial about this? Waiting for your reply.

icolwell-as commented 4 years ago

Hi, this may help: https://autonomoustuff.atlassian.net/wiki/spaces/RW/pages/17472305/Populate+CAN+Hardware+and+Circuit+IDs

Definitely check if listChannels works and double-check if the delphi driver is launched with the correct CAN params.