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en:c1_enhancement_gpio40 [2016/03/08 16:47] charles.park |
en:c1_enhancement_gpio40 [2016/03/29 10:18] odroid |
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====== Enhancement of 40pin GPIO ====== | ====== Enhancement of 40pin GPIO ====== | ||
- | The **ODROID-C2** provides 40Pin GPIOs. | + | The **ODROID-C2/C1+/C1** provides 40Pin GPIOs. |
**Easy to use GPIOs** \\ | **Easy to use GPIOs** \\ | ||
Line 11: | Line 11: | ||
Create a GPIO file access.\\ | Create a GPIO file access.\\ | ||
- | You can access GPIOs using sysfs interface. | + | 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 | echo 233 > /sys/class/gpio/export | ||
- | Configure the pin direction (in/out) | + | Configure the pin direction for input |
- | echo in > /sys/class/gpio/gpio233/direction : gpio direction input | + | echo in > /sys/class/gpio/gpio233/direction |
- | echo out > /sys/class/gpio/gpio233/direction : gpio direction output | + | Configure the pin direction for output |
+ | echo out > /sys/class/gpio/gpio233/direction | ||
Read a value (if gpio direction is input) | Read a value (if gpio direction is input) | ||
cat /sys/class/gpio/gpio233/value | cat /sys/class/gpio/gpio233/value |