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junh-ki / dias_kuksa

Pieces of connectivity implementation with Eclipse KUKSA for DIAS.
https://dias-kuksa-doc.readthedocs.io/en/latest/
GNU General Public License v3.0
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Seeed 2 Channel Shield CAN Bus Error #14

Closed junh-ki closed 3 years ago

junh-ki commented 3 years ago

I am trying to test Seeed 2 Channel Shield. I installed CAN-HAT as follow:

$ git clone https://github.com/seeed-Studio/pi-hats
$ cd pi-hats/CAN-HAT
$ sudo ./install.sh
$ sudo reboot

$ sudo ip link set can0 up type can bitrate 250000
$ sudo ip link set can1 up type can bitrate 250000

can1 works fine as it prints out only a single line of can1 7DF [4] DE AD BE EF on the terminal when trying: cansend can1 7DF#DEADBEEF.

But when I try the same to can0: cansend can0 7DF#DEADBEEF, the terminal reads the same message repeatedly for infinite times and it never stops until I escape:

...
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
can0  7DF   [4]  DE AD BE EF
...

and the following messages are shown 

pi@raspberrypi:~ $ dmesg | grep spi
[    4.632813] mcp25xxfd spi0.0: MCP2517 successfully initialized.
[    4.803697] mcp25xxfd spi1.0: MCP2517 successfully initialized.
[   72.980247] mcp25xxfd spi0.0: Controller unexpectedly switched from mode 0 to 6
[  119.627107] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.639785] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.647272] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.647622] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.652326] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.678204] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.692710] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.767581] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.807058] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.812657] mcp25xxfd spi0.0 can0: CAN Bus error experienced
[  119.832261] mcp25xxfd spi0.0 can0: CAN Bus error experienced
...

I am not sure if this is a HW or CAN-HAT problem. Have anyone experienced the same or something similar?

junh-ki commented 3 years ago

it turned out to be a CAN adapter problem