Ms14 gpios

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Revision as of 03:14, 26 August 2013 by Edwin1123 (Talk | contribs) (Created page with "==Use GPIOs== Export gpio 18 so we can use it echo 18 > /sys/class/gpio/export Set direction to out and set level to high. Use "low" to set direction to output and level to...")

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Use GPIOs

Export gpio 18 so we can use it 

echo 18 > /sys/class/gpio/export

Set direction to out and set level to high. Use "low" to set direction to output and level to low 

echo "high" > /sys/class/gpio/gpio18/direction

Set output to 0 or 1 

echo 0 > /sys/class/gpio/gpio18/value

Set GPIO18 as input 

echo "in" > /sys/class/gpio/gpio18/direction

Get GPIO18 value if set input 

cat  /sys/class/gpio/gpio18/value

Reference

http://www.avrfreaks.net/wiki/index.php/Documentation:Linux/GPIO#gpio-sysfs

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