Enhancement of 40pin GPIO
The ODROID-C2 provides 40Pin GPIOs.
Easy to use GPIOs
First, you refer to below link.
You check Export number that you want to use GPIO.
Pin description
You need to enter into super-user mode first to run below commands !!
sudo su
Create a GPIO file access.
You can access GPIOs using sysfs interface. This example uses pin number 18 which is connected to the GPIO233(GPIOX.BIT5).
echo 233 > /sys/class/gpio/export
Configure the pin direction for input
echo in > /sys/class/gpio/gpio233/direction
Configure the pin direction for output
echo out > /sys/class/gpio/gpio233/direction
Read a value (if gpio direction is input)
cat /sys/class/gpio/gpio233/value
Write a value (if gpio direction is output)
echo 1 > /sys/class/gpio/gpio233/value : gpio high echo 0 > /sys/class/gpio/gpio233/value : gpio low
