Test CAN BUS on BeagleBone

RE: Test CAN BUS on BeagleBone

Jan Cumps — Tue, 29 Dec 2020 14:27:22 GMT

I've tested this with in combination with an AVNET SmartEdge (essentially a Raspberry Pi with added hardware), and that works fine.

[View:/resized-image/__size/620x827/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-955d500f-579c-4739-82b8-a1466e6d59a9/1321.contentimage_5F00_193383.png:620:827]

Setup of the Smartedge is simpler - the image is prepared , you need to uncomment settings and you have a working CAN.

Other differences: the CAN logic is a separate I2C IC there, while on BB it's embedded in the ARM processor.

Smartedge's bus driver is isolated. My little driver PCB isn't (my choise, not an omission in the BB).

AVNET SmartEdge IIOT Gateway: Use the Isolated CAN

RE: Test CAN BUS on BeagleBone

mp2100 — Mon, 14 Oct 2019 16:49:43 GMT

Thank you [mention:acaf6a9338de4eef8f6717d5561ed01d:e9ed411860ed4f2ba0265705b8793d05], and apparently Thomas Wedemeyer! I was curious about CAN, so I read this item. But more important for me, I had not come across the config-pin command. I was recently trying to get my BBBlack talking with the UART to my PLC which only has RS232 communication (it's from the 1990s). I have Derek Molloy's book, I have google searches, but I had not gotten the UART working. I see your "sudo config-pin p9.24 can" and change it to "sudo config-pin p9.24 uart" and suddenly I am talking to my PLC! Thanks.

[View:/resized-image/__size/422x298/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-955d500f-579c-4739-82b8-a1466e6d59a9/contentimage_5F00_193382.jpg:422:298]

RE: Test CAN BUS on BeagleBone

clem57 — Sun, 29 Sep 2019 12:46:05 GMT

Thanks [mention:acaf6a9338de4eef8f6717d5561ed01d:e9ed411860ed4f2ba0265705b8793d05] for the review of the CAN bus on Beagle Bone. I am wondering if you can explain the differential signals. In particular why they are use and where...