June 2021
Intermediate to advanced
421 pages
10h 56m
English
Content preview from Programming the Internet of Things
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Chapter 4. Data Emulation
I see, hear, and smell.
Should I transmit a warning?
False alarm. Ignore.
Processing sensor data from simulators and generating log output as part of an actuation event is pretty cool, but wouldn’t it be even cooler to use sliders to adjust the values your sensor task is reading? Even better would be the ability to display messages on a real (or emulated) LED display when an actuation event is triggered, right?
This chapter explores how to set up, configure, and use an emulator that can provide a virtual LED display, plus temperature, pressure, humidity, and other readings.
What You’ll Learn in This Chapter
Much of this chapter is dedicated to setting up and configuring the Sense-Emu emulator, which is a virtual Sense HAT1 device you can run on Windows, Mac, or Linux platforms (although I’ve found it easiest to run on Linux).
Note
The Sense HAT is a board that can attach to a Raspberry Pi’s 40-pin GPIO and provides a variety of sensing capabilities, including humidity, pressure, and temperature. The LED matrix displays text or graphics in multiple colors on an 8x8 grid. It also contains a built-in inertial measurement unit (IMU) and magnetometer to measure compass readings, x/y/z-axis orientation, and acceleration. ...
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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.
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.