beaglebone black gpio python

By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Please read the changelog. I don not want to use circuit python as I have not like it as much as others mentioned. You have been successfully subscribed to the Notification List for this product and will therefore receive an e-mail from us when it is back in stock! "), you can click on the "GateOne SSH link to the upper left, in the sidebar. Building a surveillance system with a PIR sensor, the BeagleBone Black and Python.The BeagleBone Black is an outstanding tool . Finally, click the Download balenaOS button. Python threading class for GPIO Led blink. {"appState":{"pageLoadApiCallsStatus":true},"articleState":{"article":{"headers":{"creationTime":"2016-03-26T08:06:31+00:00","modifiedTime":"2016-03-26T08:06:31+00:00","timestamp":"2022-09-14T17:52:40+00:00"},"data":{"breadcrumbs":[{"name":"Technology","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33512"},"slug":"technology","categoryId":33512},{"name":"Computers","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33513"},"slug":"computers","categoryId":33513},{"name":"Hardware","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33516"},"slug":"hardware","categoryId":33516},{"name":"BeagleBone","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33518"},"slug":"beaglebone","categoryId":33518}],"title":"How to Control BeagleBone's GPIOs","strippedTitle":"how to control beaglebone's gpios","slug":"how-to-control-beaglebones-gpios","canonicalUrl":"","seo":{"metaDescription":"Following is a handy reference that you can use to control and access your BeagleBones general purpose input/output (GPIOs) with the file system, BoneScript, a","noIndex":0,"noFollow":0},"content":"

Following is a handy reference that you can use to control and access your BeagleBones general purpose input/output (GPIOs) with the file system, BoneScript, and Python.

Controlling the GPIO with the file system

You can use the following commands to control the GPIO with the file system.

Exporting a pin:
\n
```
echo 40 > /sys/class/gpio/export
```
\n

Setting a pin OUTPUT:

echo out > /sys/class/gpio/gpio40/direction

Writing a pin HIGH:
\n
```
echo 1 > /sys/class/gpio/gpio40/value
```
\n
Writing a pin LOW:
\n
```
echo 0 > /sys/class/gpio/gpio40/value
```
\n

Setting a pin INPUT:

echo in > /sys/class/gpio/gpio40/direction

Reading the value from an INPUT pin (returns 1 for HIGH and 0 for LOW):
\n
```
cat /sys/class/gpio/gpio40/value
```
\n

Controlling the GPIO with BoneScript

You can use the following BoneScript commands to control the GPIO.

Loading a BoneScript module:
\n
```
var b = require('bonescript');
```
\n
Setting a pin OUTPUT:
\n
```
b.pinMode(\"P9_14\", b.OUTPUT);
```
\n
Writing a pin HIGH:
\n
```
b.digitalWrite(\"P9_14\", b.HIGH);
```
\n
Writing a pin LOW:
\n
```
b.digitalWrite(\"P9_14\", b.LOW);
```
\n
Setting a pin INPUT:
\n
```
b.pinMode(\"P8_11\", b.INPUT);
```
\n
Reading the value from a digital INPUT pin (returns HIGH or LOW):
\n
```
b.digitalRead(\"P8_11\");
```
\n
Setting a pin for pulse-width modulation (PWM) with 50 percent duty cycle:
\n
```
b.pinMode('P9_14', b.OUTPUT);\nb.analogWrite('P9_14', 0.5);
```
\n
Reading the value from an analog INPUT pin (returns a value between 0 and 1):
\n
```
b.analogRead('P9_40');
```
\n

Controlling the GPIO with Python

You can use the following Python commands to control the GPIO.

Importing Adafruits BeagleBone Input Output Library:
\n
```
import Adafruit_BBIO.GPIO as GPIO
```
\n
Setting a pin OUTPUT:
\n
```
GPIO.setup(\"P9_14\", GPIO.OUT)
```
\n
Writing a pin HIGH:
\n
```
GPIO.output(\"P9_14\", GPIO.HIGH)
```
\n
Writing a pin LOW:
\n
```
GPIO.output(\"P9_14\", GPIO.LOW)
```
\n
Setting a pin INPUT:
\n
```
GPIO.setup(\"P8_11\", GPIO.IN)
```
\n
Reading the value from a digital INPUT pin (returns HIGH or LOW):
\n
```
GPIO.input(\"P8_11\")
```
\n

Setting a pin for PWM with 50 percent duty cycle:

import Adafruit_BBIO.PWM as PWM\nPWM.start(\"P9_14\", 50)

Setting an analog INPUT:

import Adafruit_BBIO.ADC as ADC\nADC.setup()

Reading the value from an analog INPUT pin (returns a value between 0 and 1):
\n
```
analogReading = ADC.read(\"P9_40\")
```
\n

","description":"

Following is a handy reference that you can use to control and access your BeagleBones general purpose input/output (GPIOs) with the file system, BoneScript, and Python.

Controlling the GPIO with the file system

You can use the following commands to control the GPIO with the file system.

Exporting a pin:
\n
```
echo 40 > /sys/class/gpio/export
```
\n

Setting a pin OUTPUT:

echo out > /sys/class/gpio/gpio40/direction

Writing a pin HIGH:
\n
```
echo 1 > /sys/class/gpio/gpio40/value
```
\n
Writing a pin LOW:
\n
```
echo 0 > /sys/class/gpio/gpio40/value
```
\n

Setting a pin INPUT:

echo in > /sys/class/gpio/gpio40/direction

Reading the value from an INPUT pin (returns 1 for HIGH and 0 for LOW):
\n
```
cat /sys/class/gpio/gpio40/value
```
\n

Controlling the GPIO with BoneScript

You can use the following BoneScript commands to control the GPIO.

Loading a BoneScript module:
\n
```
var b = require('bonescript');
```
\n
Setting a pin OUTPUT:
\n
```
b.pinMode(\"P9_14\", b.OUTPUT);
```
\n
Writing a pin HIGH:
\n
```
b.digitalWrite(\"P9_14\", b.HIGH);
```
\n
Writing a pin LOW:
\n
```
b.digitalWrite(\"P9_14\", b.LOW);
```
\n
Setting a pin INPUT:
\n
```
b.pinMode(\"P8_11\", b.INPUT);
```
\n
Reading the value from a digital INPUT pin (returns HIGH or LOW):
\n
```
b.digitalRead(\"P8_11\");
```
\n
Setting a pin for pulse-width modulation (PWM) with 50 percent duty cycle:
\n
```
b.pinMode('P9_14', b.OUTPUT);\nb.analogWrite('P9_14', 0.5);
```
\n
Reading the value from an analog INPUT pin (returns a value between 0 and 1):
\n
```
b.analogRead('P9_40');
```
\n

Controlling the GPIO with Python

You can use the following Python commands to control the GPIO.

Importing Adafruits BeagleBone Input Output Library:
\n
```
import Adafruit_BBIO.GPIO as GPIO
```
\n
Setting a pin OUTPUT:
\n
```
GPIO.setup(\"P9_14\", GPIO.OUT)
```
\n
Writing a pin HIGH:
\n
```
GPIO.output(\"P9_14\", GPIO.HIGH)
```
\n
Writing a pin LOW:
\n
```
GPIO.output(\"P9_14\", GPIO.LOW)
```
\n
Setting a pin INPUT:
\n
```
GPIO.setup(\"P8_11\", GPIO.IN)
```
\n
Reading the value from a digital INPUT pin (returns HIGH or LOW):
\n
```
GPIO.input(\"P8_11\")
```
\n

Setting a pin for PWM with 50 percent duty cycle:

import Adafruit_BBIO.PWM as PWM\nPWM.start(\"P9_14\", 50)

Setting an analog INPUT:

import Adafruit_BBIO.ADC as ADC\nADC.setup()

Reading the value from an analog INPUT pin (returns a value between 0 and 1):
\n
```
analogReading = ADC.read(\"P9_40\")
```
\n

","blurb":"","authors":[{"authorId":9270,"name":"Rui Santos","slug":"rui-santos","description":"","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/9270"}},{"authorId":9271,"name":"Luis Miguel Costa Perestrelo","slug":"luis-miguel-costa-perestrelo","description":"","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/9271"}}],"primaryCategoryTaxonomy":{"categoryId":33518,"title":"BeagleBone","slug":"beaglebone","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33518"}},"secondaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"tertiaryCategoryTaxonomy":{"categoryId":0,"title":null,"slug":null,"_links":null},"trendingArticles":null,"inThisArticle":[{"label":"Controlling the GPIO with the file system","target":"#tab1"},{"label":"Controlling the GPIO with BoneScript","target":"#tab2"},{"label":"Controlling the GPIO with Python","target":"#tab3"}],"relatedArticles":{"fromBook":[],"fromCategory":[{"articleId":207579,"title":"BeagleBone For Dummies Cheat Sheet","slug":"beaglebone-for-dummies-cheat-sheet","categoryList":["technology","computers","hardware","beaglebone"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/207579"}},{"articleId":203333,"title":"7 Capes You Can Add to the BeagleBone","slug":"7-capes-you-can-add-to-the-beaglebone","categoryList":["technology","computers","hardware","beaglebone"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/203333"}},{"articleId":203332,"title":"4 Amazing Projects for the BeagleBone","slug":"4-amazing-projects-for-the-beaglebone","categoryList":["technology","computers","hardware","beaglebone"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/203332"}},{"articleId":145670,"title":"Comparing BeagleBone Black and Raspberry Pi","slug":"comparing-beaglebone-black-and-raspberry-pi","categoryList":["technology","computers","hardware","beaglebone"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/145670"}},{"articleId":144981,"title":"How to Connect the BeagleBone Black via Serial over USB","slug":"how-to-connect-the-beaglebone-black-via-serial-over-usb","categoryList":["technology","computers","hardware","beaglebone"],"_links":{"self":"https://dummies-api.dummies.com/v2/articles/144981"}}]},"hasRelatedBookFromSearch":true,"relatedBook":{"bookId":292900,"slug":"arduino-projects-for-dummies","isbn":"9781118551479","categoryList":["technology","computers","hardware","arduino"],"amazon":{"default":"https://www.amazon.com/gp/product/1118551478/ref=as_li_tl?ie=UTF8&tag=wiley01-20","ca":"https://www.amazon.ca/gp/product/1118551478/ref=as_li_tl?ie=UTF8&tag=wiley01-20","indigo_ca":"http://www.tkqlhce.com/click-9208661-13710633?url=https://www.chapters.indigo.ca/en-ca/books/product/1118551478-item.html&cjsku=978111945484","gb":"https://www.amazon.co.uk/gp/product/1118551478/ref=as_li_tl?ie=UTF8&tag=wiley01-20","de":"https://www.amazon.de/gp/product/1118551478/ref=as_li_tl?ie=UTF8&tag=wiley01-20"},"image":{"src":"https://catalogimages.wiley.com/images/db/jimages/9781118551479.jpg","width":250,"height":350},"title":"Arduino Projects For Dummies","testBankPinActivationLink":"","bookOutOfPrint":false,"authorsInfo":"\n

Brock Craft is a Lecturer in Physical Computing at Goldsmiths, University of London in the Department of Computing.

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