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intrepidcs / intrepid-socketcan-kernel-module

Kernel-mode SocketCAN module for Intrepid devices
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Sent packets not shown in candump #11

Closed kevinsikes closed 3 years ago

kevinsikes commented 3 years ago

Using socketcan kernel module tag v2.0.5 (8a21b53) and icsscand tag v2.0.3 (c506f27), packets sent through ValueCAN are not shown in can-utils candump -- only received packets are shown. If I use a different socketcan interface such as MCP2515, sent packets are shown correctly in candump. Tested with ValueCAN 3 on Ubuntu 20.0.4.

hollinsky-intrepid commented 3 years ago

If you'd like an immediate fix, the two lines responsible for suppressing echos are here in icsscand. Commenting them out will show transmitted messages as received.

I'll take a closer look at this. If I remember correctly echo is an option either on the network interface or the socket. Perhaps it's just something the MCP2515 driver sets as a default and we're not setting it, or the driver is responsible for implementing it.

kevinsikes commented 3 years ago

That did the trick -- thanks for the quick response!