Using the GPIO through Linux
Pulled from:
https://www.youtube.com/watch?v=WRoXPfHDtMs
The GPIO bus exists as a folder like everything else in the Linux file system.
/sys/class/gpio
Navigate to this folder and ls
export gpiochip0 unexport
Export in this folder is a small program used to establish pins.
This will set up pin 7.
echo -n "7" > export
Once the above command is run it will set up a folder for your pin that you can begin to manipulate.
active_low direction edge power subsystem uevent value
echo -n "strong" > drive : still unsure of this command but seems required across the board.
direction will allow you to set input or output
value will allow you to set the value of the pin
Use caution with the number schema.
https://www.youtube.com/watch?v=WRoXPfHDtMs
The GPIO bus exists as a folder like everything else in the Linux file system.
/sys/class/gpio
Navigate to this folder and ls
export gpiochip0 unexport
Export in this folder is a small program used to establish pins.
This will set up pin 7.
echo -n "7" > export
Once the above command is run it will set up a folder for your pin that you can begin to manipulate.
active_low direction edge power subsystem uevent value
direction will allow you to set input or output
value will allow you to set the value of the pin
Use caution with the number schema.
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