====== 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. \\
[[en:c2_hardware&#expansion_connectors | Pin description]]

** You need to enter into super-user mode first to run below commands !! **
<code> sudo su </code>

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

===== I2C =====
[[en:c2_hardware_i2c|I2C]]
===== PWM =====
[[en:c2_hardware_pwm|PWM]]
===== UART =====
[[en:c2_hardware_uart|UART]]
===== 1-Wire =====
[[en:c2_hardware_1w|1-Wire]]
===== ADC =====
[[en:c2_hardware_adc|ADC]]