Mity CPU Platforms » MitySOM-AM62, MitySOM-AM62A, & MitySOM-AM62P

export GPIO_PIN_NUMBER=638 # corresponds to /dev/gpiochip2, line index 10

echo $GPIO_PIN_NUMBER > /sys/class/gpio/export

trap "echo $GPIO_PIN_NUMBER > /sys/class/gpio/unexport" EXIT 

echo "EXPORTED PIN ${GPIO_PIN_NUMBER}: "

ls /sys/class/gpio

echo "SETTING MODE TO OUTPUT"

echo 'out' > /sys/class/gpio/gpio${GPIO_PIN_NUMBER}/direction

while true; do

    echo "SETTING VALUE TO 1"

    echo 1 > /sys/class/gpio/gpio${GPIO_PIN_NUMBER}/value

    echo "VALUE IS: " $(cat /sys/class/gpio/gpio${GPIO_PIN_NUMBER}/value)

    sleep 5

    echo "SETTING VALUE TO 0"

    echo 0 > /sys/class/gpio/gpio${GPIO_PIN_NUMBER}/value

    echo "VALUE IS: " $(cat /sys/class/gpio/gpio${GPIO_PIN_NUMBER}/value)

    sleep 5

done