June 2016
Intermediate to advanced
720 pages
19h 20m
English
Content preview from Exploring Raspberry Pi
Become 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,
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.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Chapter 11Real-Time Interfacing Using the Arduino
A key strength of Linux on embedded systems is the vast amount of software and device drivers that is freely available. Unfortunately, the overhead of running Linux is problematic for the performance of high-speed interfacing tasks—for example, generating or sampling bit patterns on general-purpose inputs/outputs (GPIOs) at high speeds. One solution to this problem is to use dedicated real-time slave processors and to communicate with them using high-level protocols. There are many suitable slave processors available, but this chapter is focused on just one platform: the Arduino. This chapter describes how the Raspberry Pi (RPi) can interface effectively to the Arduino using UART serial, I2C, and Serial Peripheral Interface (SPI) communication. Examples are provided of the Arduino in use as an input/output extender and as a dedicated high-speed slave processor.
Equipment Required for This Chapter:
- Raspberry Pi (any model)
- An Arduino Uno or equivalent1 (with a logic-level translator) and/or an Arduino Pro Mini with 3.3V or 5V logic levels
- Sensors: TMP36 analog temperature sensor and an HC-SR04 distance sensor
Further details on this chapter are available at www.exploringrpi.com/chapter11/.
The Arduino
The Arduino (www.arduino.cc) is a popular, low-cost, and powerful microcontroller that can be used as a very capable companion controller for the RPi. The Arduino platform was designed as an introductory platform for embedded ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.