CODEWITHSUNDEEP
linuxgpiobeagleboneblackttl
LarryYourWaiter
LarryYourWaiter

Reputation: 59

How to turn off a GPIO port on BeagleBone Black Wireless

My task is to create a program to open and close an electronic valve that is plugged into GPIO ports on my BeagleBone, by using TTL signals.

Questions:

Can I do this?

How do I make an executable file to do this?

Can someone refer me to documentation on this?

Am I going about this in the wrong way?

Thank you.

P.S. If you couldn't already tell I am very new to this.

Upvotes: 1

Views: 181

Answers (1)

TBR
TBR

Reputation: 2890

  • Yes
  • There are many ways. It's actually a pretty standard Linux computer and you can use any of a "million" different programming languages to achieve this. This also means you don't have to look for "Beaglebone" specific instructions (beyond the GPIO info below), but your problem is just "How do I write a program that can write text to a file on Linux?". Bonus: This sounds easy and it is easy!
  • Yes, take a look here for the hardware specific part: https://github.com/adafruit/adafruit-beaglebone-io-python/issues/157 It describes fairly well both the new and the old sysfs interfaces you can use to manipulate GPIOs.
    • Depending on the language of your choice, there may already be bindings or a library to abstract this.
  • No (only based on the information you provided, are there other requirements?)
  • We all were new at this at some point, don't worry.

Sidenote: It's generally a good idea to make sure that you are running the latest firmware. In case of the BB-Family you can find them here: http://beagleboard.org/latest-images

Upvotes: 1

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