Hi All, I 'm trying to use MCP2515 CAN extension board from waveshare on Jetson nano, I found some dts files ref to GitHub - Seeed-Studio/seeed-linux-dtoverlays: Device Tree Overlays for Seeed boards with some modification, my latest dts file is like below: // SPDX-License-Identifier: GPL-2.0-onl…

Please refer to the following thread about using MCP2515 for CAN transmission in Jetson Nano. CanBus on the Nano - #33 by shgarg

the block diagram from jetson to PC: [image] as I just registered yesterday, so I can only attach one picutre each time.

seems loopback is also not working, please ref to below picture: [image]

I remove those two dtbo file from /boot, copy the one was generated by the dts file I shared tegra210-p3448-0000-p3449-0000-a01-mcp251x.dtbo tegra210-p3448-0000-p3449-0000-a02-mcp251x.dtbo and run jetson-io.py to configure the mcp2515, thanks.

Hi Kevin, I checked the #33 post by shgarg, and I did the same, here is what I have done. add “spidev” in /etc/modules-load.d/modules.conf enable spi1 manually and reboot, via ``` sudo /opt/nvidia/jetson-io/jetson-io.py 3. removed below file from /boot tegra210-p3448-0000-p3449-0000-a01-m…

Could you share the full serial console log or dmesg for further check? Have you tried to use CAN transceivers in your connections?

I can share the full dmesg by tomorrow. " tried to use CAN transceivers in your connections" if I understood correct, you mean to say connect the jetson CAN bus with another node, not the loopback mode? I already done this by connect Jetson CAN with Vector VN1640A(laptop), same issue, every time t…

Hi Kevin, you can find the full dmesg output here and a video here .

You could refer to the following about our verification for CAN bus (although it is verified with AGX Xavier, but we set up with CAN transceivers) Jetson AGX Xavier Developer Kit CAN commmunication error - #8 by KevinFFF Does you issue about the data been delayed received? Could you help to verif…

Hi Kevin, I checked all the related pins with a logic pro 16, here is some pictures, please help check: the setting: [image] I send 6 CAN message via cansend in jetson nano, but none of them was send to the CAN bus, after send a CAN message via CANalyzer, Jetson send out 5 CAN message + a error…

I changed the maximum clk frequency to 1000000 hz, and reboot the jetson, still I have the same issue, here you can see some pictures of the waveform: also I exported the decoded data for SPI and CAN, please note, logic pro has issue to decode CAN low signal, so sometimes the decoded data was not …

Jetson nano MCP2515 socket CAN transmit not working

Robotics & Edge Computing Jetson Systems Jetson Nano

KevinFFF July 31, 2023, 6:51am 24

I would suggest verifying SPI loopback test with latest R32.7.4 (JP4.6.4) first.
Please refer the the following thread for this.
Jetson Nano SPI Bus Not Working - #10 by KevinFFF

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Jetson nano MCP2515 socket CAN transmit not working

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