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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Chapter 11. 1-Wire - W1
After looking at the most frequently used buses that a developer can find on an embedded computer (USB, I2C, and SPI), it's time to present a less famous, but not less important communication bus: the 1-Wire bus (pronounced as one-wire and usually abbreviated with W1 or OW).
Even if this bus is quite slow compared to other buses, it's interesting because it permits to communicate with a remote device using only one wire! This allows to simplify connections between the CPU and its peripherals, giving the designer the possibility to have the most economical and simply way to add electronic devices for identification, authentication, and delivery of calibration data or manufacturing information to a computer board.
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