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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Getting access to 1-Wire devices
In the next section, we will manage a 1-Wire device using both an emulated 1-Wire controller and a real one connected by I2C to the main CPU.
Using the GPIO interface
To show you how the 1-Wire bus works, we can use a really simple chip: the temperature sensor DS18B20. There are two possible ways or modes by which the chip can be powered: a parasite version (that is, the one that works in the parasite mode) with two wires only and a normal version with a dedicated power pin, which uses three wires instead. In our example, we will use the three wires and a waterproof version of this chip. There is a special packaging of the chip so that it can be used in hostile environments (look at the following image to see the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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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.