March 2017
Intermediate to advanced
732 pages
15h 24m
English
Content preview from GNU/Linux Rapid Embedded ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Exchanging data via the CAN bus
In this section, we will see how we can use the CAN bus on our embedded kits using the transceiver-less connection only (in fact, using a transceiver is trivial; we just have to add one without any other software modifications). We'll see how to use both on-chip controllers on an external one connected via SPI to the main CPU.
Using the on-board controller
To do a transceiver-less communication with the on-board controller, we have to use the BeagleBone Black and the SAMA5D3 Xplained boards connected as shown in the following diagram. The circuitry has been realized considering what we said regarding the transceiver-less issues:
Note
The resistor is set as R=100KΩ.
At this point, we have to enable our CAN interfaces ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.