Igor: Created page with "== Example: controlling pin 2 of header P15 == '''Exporting the pin in sysfs'''

 cd /sys/class/gpio/ echo 517 > export cd gpio517

Now pin is assigned to sysfs..."

2025-01-09T15:54:07Z

Created page with "== Example: controlling pin 2 of header P15 == '''Exporting the pin in sysfs'''</br> <pre> cd /sys/class/gpio/ echo 517 > export cd gpio517 </pre> Now pin is assigned to sysfs..."

New page

== Example: controlling pin 2 of header P15 ==
'''Exporting the pin in sysfs'''</br>
<pre>
cd /sys/class/gpio/
echo 517 > export
cd gpio517
</pre>
Now pin is assigned to sysfs. You can view the newly created entry in gpiochip0 by running:
<pre>
gpioinfo -c 0
</pre>

'''Writing to a pin'''</br>
Set pin direction to output:
echo out > direction
Set pin value to high or low:
<pre>
echo 1 > value
echo 0 > value
</pre>
'''Reading from a pin'''</br>
Set pin direction to input:
echo in > direction
Read the value of the pin from the value file:
cat value

[[Category:Linux]]
[[Category:Yocto]]
[[Category:UCM-iMX95]]

UCM-iMX95 Yocto Linux: GPIO - Revision history

Igor: Created page with "== Example: controlling pin 2 of header P15 == '''Exporting the pin in sysfs'''

cd /sys/class/gpio/ echo 517 > export cd gpio517
Now pin is assigned to sysfs..."