Basics of 30pin Port
The ODROID-XU3 provides 30Pin GPIOs.
You need to enter into super-user mode first to run below commands !!
- target
sudo su
Easy to use GPIOs
First, you refer to below link.
You check Export number that you want to use GPIO.
Pin description
Create a GPIO file access.
You can access GPIOs using sysfs interface.
- target
echo 29 > /sys/class/gpio/export
Configure the pin direction (in/out)
- target
echo in > /sys/class/gpio/gpio29/direction
Read a value
- target
cat /sys/class/gpio/gpio29/value
LED ON/OFF example
If you want to use LED ON/OFF, first you check the NET name in Expansion Board.
For example, The NET name of D1 is INT23.
According to below link, The Export GPIO number is #31.
Pin description
- target
echo 31 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio31/direction
LED ON
- target
echo 1 > /sys/class/gpio/gpio31/value
LED OFF
- target
echo 0 > /sys/class/gpio/gpio31/value
luke.go