When we send a high value (1) to a GPIO pin configured as output, the GPIO pin will have:
0 V.
6 V.
The voltage specified in the position in which the IOREF jumper is located.
An instance of the
mraa.Gpio
class represents:A single GPIO pin in the board.
All the I/O pins in the board.
Two GPIO pins in the board.
When we create an instance of the
mraa.Gpio
class, we must specify:The pin number as an argument.
The specific board and a pin number as arguments.
The pin number and the desired direction:
mraa.DIR_OUT
ormraa.DIR_IN
.
Which of the following lines write a high value to the GPIO pin configured as output with the instance of
mraa.Gpio
namedgpio10
:gpio10.write(0)
gpio10.write(1)
gpio10.write(mraa.HIGH_VALUE)
Which of the following lines configure the instance of
mraa.Gpio
namedgpio10
for digital output:gpio10.dir(mraa.DIR_DIGITAL).out()
gpio10.dir(mraa.DIR_OUT)
gpio10.dir(mraa.DIR_OUT, mraa.DIGITAL)
Internet of Things with Python
By :
Internet of Things with Python
By:
Overview of this book
Internet of Things (IoT) is revolutionizing the way devices/things interact with each other. And when you have IoT with Python on your side, you'll be able to build interactive objects and design them.
This book lets you stay at the forefront of cutting-edge research on IoT. We'll open up the possibilities using tools that enable you to interact with the world, such as Intel Galileo Gen 2, sensors, and other hardware. You will learn how to read, write, and convert digital values to generate analog output by programming Pulse Width Modulation (PWM) in Python. You will get familiar with the complex communication system included in the board, so you can interact with any shield, actuator, or sensor.
Later on, you will not only see how to work with data received from the sensors, but also perform actions by sending them to a specific shield. You'll be able to connect your IoT device to the entire world, by integrating WiFi, Bluetooth, and Internet settings. With everything ready, you will see how to work in real time on your IoT device using the MQTT protocol in python.
By the end of the book, you will be able to develop IoT prototypes with Python, libraries, and tools.
Table of Contents (19 chapters)
Internet of Things with Python
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Free Chapter
Understanding and Setting up the Base IoT Hardware
Working with Python on Intel Galileo Gen 2
Interacting with Digital Outputs with Python
Working with a RESTful API and Pulse Width Modulation
Working with Digital Inputs, Polling and Interrupts
Working with Analog Inputs and Local Storage
Retrieving Data from the Real World with Sensors
Displaying Information and Performing Actions
Working with the Cloud
Analyzing Huge Amounts of Data with Cloud-based IoT Analytics
Exercise Answers
Index
Customer Reviews